WO2023065863A1 - 一种接收器件、射频***及通信设备 - Google Patents

一种接收器件、射频***及通信设备 Download PDF

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Publication number
WO2023065863A1
WO2023065863A1 PCT/CN2022/117310 CN2022117310W WO2023065863A1 WO 2023065863 A1 WO2023065863 A1 WO 2023065863A1 CN 2022117310 W CN2022117310 W CN 2022117310W WO 2023065863 A1 WO2023065863 A1 WO 2023065863A1
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WIPO (PCT)
Prior art keywords
receiving
port
fem
frequency
filter
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PCT/CN2022/117310
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English (en)
French (fr)
Inventor
王国龙
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Oppo广东移动通信有限公司
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Publication of WO2023065863A1 publication Critical patent/WO2023065863A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0202—Two or more dimensional filters; Filters for complex signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Definitions

  • This article relates to the field of radio frequency technology, in particular to a receiving device, a radio frequency system and communication equipment.
  • Embodiments of the present application provide a receiving device, a radio frequency system, and communication equipment, which can save space on a motherboard and reduce costs.
  • the embodiment of the present application provides a receiving device, including: a filtering component, a receiving amplifying component; the filtering component includes: an input port, configured to receive a received signal from an antenna; an on-chip filter, configured to receive The signal is filtered to obtain the received signal of the predetermined frequency band; the output port is set to send the received signal of the predetermined frequency band to the receiving amplifier component; the receiving amplifier component is set to amplify the power of the received signal of the predetermined frequency band and output it.
  • an embodiment of the present application provides a radio frequency system, including: an antenna, a transceiver, and the receiving device provided in the embodiment of the present application.
  • the embodiment of the present application provides a communication device, including the radio frequency system provided in the embodiment of the present application.
  • the receiving frame is optimized, and the filter is integrated into the filter component, so that the occupied motherboard area will not be increased due to the addition of the external filter, so the integration degree can be improved , to reduce costs; if the receiving device is set to receive signals of other frequency bands, the signals of different frequency bands output by multiple filter components can be matched in the same module, reducing the possibility of port mismatch and improving receiving performance.
  • Figure 1a is a schematic diagram of a receiving device provided by an embodiment of the present application.
  • Fig. 1b is a schematic diagram of a radio frequency system provided by an embodiment of the present application.
  • Figure 2 is one of the schematic diagrams of the FEM in the exemplary embodiment
  • Figure 3a is a schematic diagram of a radio frequency system in a first example
  • Fig. 3 b is a schematic diagram of the connection relationship of LB PA Mid in the first example
  • Fig. 3c is a schematic diagram of the connection relationship of MHB PA Mid in the first example
  • Fig. 3 d is a schematic diagram of the connection relationship of the main set receiving LNA BANK in the first example
  • Figure 3e is a schematic diagram of the connection relationship of the FEM in the first example
  • Fig. 3 f is a schematic diagram of the connection relationship of the diversity reception LNA BANK in the first example
  • Fig. 4 is the second schematic diagram of FEM in the exemplary embodiment
  • Fig. 5 is a schematic diagram of the connection relationship of FEM in the second example
  • Fig. 6 is the third schematic diagram of FEM in the exemplary embodiment
  • Fig. 7 is a schematic diagram of the connection relationship of FEM in the third example.
  • Figure 8 is a schematic diagram of LB PA Mid in an exemplary embodiment
  • Fig. 9 a is a schematic diagram of the connection relationship of LB PA Mid in the fourth example.
  • Fig. 9b is a schematic diagram of the connection relationship of FEM in the fourth example.
  • Fig. 10 is a schematic diagram of a radio frequency system in a fifth example.
  • the receiving devices and radio frequency systems involved in the embodiments of the present application can be applied to communication devices with wireless communication functions; communication devices can include any one or more of the following: handheld devices, vehicle-mounted devices, wearable devices, computing devices, other processing Equipment, MS (Mobile Station, mobile station), each form of UE (User Equipment, user equipment); UE, for example, can be a mobile phone or a tablet computer.
  • communication devices can include any one or more of the following: handheld devices, vehicle-mounted devices, wearable devices, computing devices, other processing Equipment, MS (Mobile Station, mobile station), each form of UE (User Equipment, user equipment); UE, for example, can be a mobile phone or a tablet computer.
  • the embodiment of the present application provides a receiving device, which is applied to the receiving path, as shown in Figure 1a, including:
  • Filtering component 12 receiving amplifying component 13;
  • Filter assembly 12 includes:
  • an input port 121 configured to receive a receive signal from the antenna
  • the on-chip filter 122 is configured to filter the received signal to obtain a predetermined frequency band received signal
  • the output port 123 is configured to send the received signal of the predetermined frequency band to the receiving and amplifying component 13;
  • the receiving amplifying component 13 is configured to amplify the received signal in a predetermined frequency band before outputting it.
  • the receiving frame is optimized, and the on-chip filter 122 is integrated into the filter component 12, so that the occupied motherboard area will not be increased due to the addition of external filters, so the integration degree can be improved and the Cost; if the receiving device is set to receive signals of other frequency bands, the signals of different frequency bands output by multiple filter components 12 can be matched in the same module, reducing the possibility of port mismatch and improving receiving performance.
  • the filtering component 12 can be understood to be arranged in a packaged chip, such as being arranged in a FEM (Front-end Module, front-end module) chip, PA Mid (Power Amplifier Modules including Duplexers, power amplifier module) chip, etc. device.
  • the filtering function of the filtering component 12 can be realized by building an on-chip filter 122 in a FEM chip and/or a chip such as PA Mid.
  • the predetermined frequency band is related to the used on-chip filter, for example, if the on-chip filter is an N28 filter, N28 filtering is performed on the received signal to obtain the received signal in the N28 frequency band.
  • the filtering component 12 when the received signal from the antenna includes a multi-input multi-output main set received signal, the filtering component 12 configured to receive the multi-input multi-output main set received signal is packaged in the power amplification module PA In Mid; when the received signal from the antenna includes a diversity received signal and/or an MIMO diversity received signal, the filtering assembly 12 configured to receive the diversity received signal and/or MIMO diversity received signal is encapsulated in In the radio frequency front-end module FEM, for example, the filter component 12 configured to receive the diversity reception signal is packaged in one FEM, and the filter component 12 configured to receive the multi-input multi-output diversity reception signal is packaged in another FEM.
  • FEM radio frequency front-end module
  • This embodiment can improve the integration of the entire receiving framework.
  • the filter components corresponding to the main set MIMO signal in the PA Mid are packaged in the FEM, so that when it is also necessary to receive When signals of other frequency bands are used, signals of different frequency bands can be matched in the same chip, reducing the possibility of port mismatch and improving receiving performance.
  • the receiving amplifier assembly 13 can be set in the LNA (Low Noise Amplifier, low noise amplifier) BANK (group) chip; the LNA BANK can be a receiving module integrating a low noise amplifier and a switch, and the low noise amplifier wherein The input end of the release path is connected to the output port 123 of the filter component 12 .
  • LNA Low Noise Amplifier, low noise amplifier
  • the receiving path may correspond to the antenna used to receive the signal.
  • the embodiment of the present application also provides a radio frequency system, as shown in FIG. 1b, including a transceiver 10, an antenna 11, and a receiving device provided in the embodiment of the present application; wherein, the input port 121 of the filtering component 12 obtains a received signal from the antenna 11, The received signal of the predetermined frequency band is filtered by the on-chip filter 122 and sent to the receiving amplifier component 13 through the output port 123; the receiving amplifier component 13 amplifies the received signal of the predetermined frequency band and outputs it to the transceiver 10.
  • a radio frequency system as shown in FIG. 1b, including a transceiver 10, an antenna 11, and a receiving device provided in the embodiment of the present application; wherein, the input port 121 of the filtering component 12 obtains a received signal from the antenna 11, The received signal of the predetermined frequency band is filtered by the on-chip filter 122 and sent to the receiving amplifier component 13 through the output port 123; the receiving amplifier component 13 amplifies the received signal of the predetermined frequency band and outputs it
  • the antenna 11 may be configured to support the reception and transmission of radio frequency signals in different frequency bands; the radio frequency signals may include 2G, 3G, 4G, 5G signals and the like.
  • Antenna 11 can be an antenna with a resonant element in any structure, such as but not limited to one or more of the following: monopole antenna, dipole antenna, strip antenna, loop antenna, helical antenna, array antenna, patch antenna, slot antenna etc.
  • Antennas with different structures can be set to different frequency bands or combinations of frequency bands.
  • the radio frequency system may include a transmitting component that is independent or integrated with the filtering component in the same chip, and is configured to transmit the transmitting signal from the transceiver to the antenna.
  • the transceiver 10 may add a port, which is connected to the output port 123, and is configured to receive a received signal of a predetermined frequency band filtered by a filter (external filter and/or on-chip filter).
  • a filter external filter and/or on-chip filter
  • the on-chip filter 122 may be, but not limited to, an N28 filter; the received signal in the predetermined frequency band is the received signal in the N28 frequency band.
  • the wireless frequency of N28 is low, the wavelength is relatively long, the diffraction ability is strong, and the coverage ability is greater. It will become an important low-frequency coverage frequency band of the 5G network.
  • N28 is a relatively wide frequency band, in order to avoid adjacent channel interference during application, only part of the frequency band in N28 can be used, called N28A or N28B; in some application scenarios (such as LTE), B28 is also used instead of N28.
  • the N28 frequency band in this article may be adaptively referred to as N28A, N28B, B28, B28A and other frequency bands according to different application scenarios.
  • PRX Primary Receive, main set receiving
  • DRX Diversity Receive, diversity receiving
  • the filter component 12 may only be configured on the receiving path corresponding to the main set or the diversity receiving signal, and the receiving path corresponding to the diversity or main set receiving signal uses an external filter.
  • the multiple filter components 12 can be set in the same chip or device, or the filter component 12 corresponding to the PRX signal can be set in one chip or device, The filter component 12 corresponding to the DRX signal is provided in another chip or device, or multiple filter components 12 may be provided in multiple chips or devices.
  • MIMO Multiple-Input Multiple-Output, Multiple-Input Multiple-Output
  • the MIMO function refers to the use of multiple transmitting antennas and receiving antennas, making full use of space resources, and realizing multiple transmission and multiple reception functions through multiple antennas, which can double the system channel capacity without increasing spectrum resources and antenna transmission power.
  • the antenna 11 in the radio frequency system may include multiple antennas 11 corresponding to the receiving paths, for example, it may include 4 antennas, which are used in TX (transmission) and PRX links, DRX links, and PRX MIMO links respectively.
  • TX transmission
  • PRX links PRX links
  • PRX MIMO links PRX MIMO links
  • any receiving path can correspond to one or more filtering components 12.
  • the number of filter components 12 may be, but not limited to, four, which are respectively configured to receive PRX signals, DRX signals, PRX MIMO signals, and DRX MIMO signals and perform filtering in a predetermined frequency band before outputting.
  • the received signal from the antenna includes a diversity received signal and a MIMO diversity received signal
  • two filter components 12 are respectively set to receive the diversity received signal and the MIMO diversity received signal.
  • multiple filtering components 12 can be set in the same chip or device; or the filtering component 12 corresponding to the PRX signal and PRX MIMO signal can be set in one chip or device, and the filtering component 12 corresponding to the DRX signal, DRX
  • the filtering component 12 for MIMO signals is provided in another chip or device.
  • multiple receiving and amplifying components can be set in the same chip or device; or the receiving and amplifying components corresponding to the PRX signal and PRX MIMO signal can be set in one chip or device, and the receiving and amplifying components corresponding to the DRX signal, DRX The signal receiving and amplifying components of MIMO are set in another chip or device.
  • the radio frequency system may further include: a combiner configured to divide the received signal entering from the antenna 11 into a low-frequency received signal and a medium-high frequency received signal.
  • the input port of the filter component 12 may include a low-frequency input port and a mid-high frequency input port, or the filter component 12 may include a low-frequency filter component and a mid-high frequency filter component.
  • the filter component 12 includes a plurality of on-chip filters 122 of different frequency bands and a plurality of output ports 123; the plurality of output ports 123 can be respectively connected to a plurality of on-chip filters of different frequency bands in a one-to-one manner. the output of the filter 122;
  • the receiving device 12 may also include: a toggle switch; the toggle switch includes at least one first contact and a plurality of second contacts; the first contact is connected to the input port 121, and the plurality of second contacts are respectively connected to chips of different frequency bands; The input terminal of inner filter 122.
  • filters in multiple frequency bands can be selected, so that the receiving device can support multiple frequency bands.
  • the filtering component 12 and the switching switch can be, but not limited to, arranged in the same module.
  • the changeover switch may be a single-pole multiple-throw switch.
  • the receiving amplifying assembly 13 is arranged in the LNA BANK; the receiving amplifying assembly 13 includes: a connected input port group and a low noise amplifier path; the output port 123 of the filtering assembly 12 passes through a port in the input port group Connect to the input end of the low-noise amplifier channel; the low-noise amplifier channel is set to perform low-noise power amplification on the received signal of a predetermined frequency band and then output it.
  • the filter assembly 12 can be arranged in the FEM, the input port 121 can be the antenna port of the FEM, and the output port 123 can be the output port of a predetermined frequency band on the FEM; the on-chip filter 122 is connected to the low-frequency antenna port and the output port of the predetermined frequency band.
  • the received signal includes a DRX low-frequency signal
  • the received signal of a predetermined frequency band includes a DRX signal of a predetermined frequency band
  • the input port 121 can be the low-frequency antenna port LB ANT of the FEM
  • the output port 123 can be the LB ANT on the FEM.
  • the output port of the predetermined frequency band is, for example but not limited to, the N28 OUT port
  • the on-chip filter 122 is connected between the low-frequency antenna port and the output port of the predetermined frequency band.
  • the receiving and amplifying component 13 can be set in the first LNA BANK, and the first LNA BANK is also referred to as a diversity receiving LNA BANK in this paper, and the diversity receiving mentioned here includes DRX and DRX MIMO.
  • the first LNA BANK includes the connected first low-frequency input port group LB1 IN and the first low-frequency low-noise amplifier path; the N28 OUT port of the FEM is connected to the input of the first low-frequency low-noise amplifier path through a port in the first low-frequency input port group end; the first low-frequency low-noise amplifier path is set to perform low-noise power amplification on the N28 DRX signal and output it to the transceiver 10.
  • ports other than the connection output port 123 may be connected to DRX low-frequency signals of other frequency bands or left floating.
  • the FEM can also include a switch, which includes at least one first contact, connected to LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the on-chip filter 122 input terminal.
  • the changeover switch may be a single-pole multiple-throw switch.
  • the FEM provided with the filter assembly is shown in Figure 2, the on-chip filter 122 is an N28 filter; the switch is a single-pole five-throw switch SP5T; there may also be a ground in the second contact, A low-frequency port LB AUX1 connected to the FEM.
  • the FEM may also include a digital logic unit ASM RFFE arranged for logic control.
  • all or part of the other second contacts in the switch can be connected to the filter input terminals of other frequency band signals, so as to support the reception of multiple frequency bands; the output terminal of the on-chip filter 122 is directly connected to the FEM The N28 OUT port.
  • the first LNA BANK can also include a first single-pole multi-throw switch;
  • the first low-noise amplifier path can include a first low-frequency low-noise amplifier LB1LNA, a first data selector, and a first low-frequency output port LB1 OUT;
  • the first single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the first low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the first low-frequency input Different ports in the port group are connected; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver 10 through the first low-frequency output port.
  • the radio frequency system of this example is shown in Figure 3a. ) 22, main collection receiving LNA BANK 23 (LNA BANK#1 in Fig. 3a, also referred to as the second LNA BANK in this paper), FEM 241, diversity receiving LNA BANK 25 (LNA BANK#2 in Fig. 3a);
  • the antenna includes The first antenna 31, the second antenna 32, the third antenna 33, and the antenna 31;
  • the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, and a fourth combiner 44 , N28 duplexer 50, first and second N28 filters 61, 62.
  • connection relations of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 241, and diversity receiving LNA BANK 25 in the radio frequency system are shown in Figure 3b, Figure 3c, Figure 3d, Figure 3e, and Figure 3f respectively shown.
  • the first and second N28 filters 61 and 62 are external filters.
  • the FEM 241 includes an on-chip N28 filter.
  • the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA The first low frequency input port LB1IN2 of BANK 23.
  • the signal received by the second antenna 32 is divided into low-frequency and medium-high frequency two paths by the second combiner 42, and is connected to the second low-frequency input port LB0 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high-frequency filter respectively IN1 and high frequency input port.
  • the signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths through the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 241 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 241 is connected to the FEM 241
  • the input end of the N28 filter in the N28 filter, the N28A OUT of the FEM 241 connected to the output end of the N28 filter is connected to the first low-frequency input port LB1 IN2 of the diversity reception LNA BANK 25.
  • the signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency two paths by the fourth combiner 44, and is respectively connected to the second low-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 through the second N28 filter 62 and the high-frequency filter and high-frequency input ports.
  • TX (Transmit, transmit) link (1) the transmit signal is output from the TX0LB1 port of the transceiver 10; (2) reaches the 4G LB RFIN port of the LB PA Mid 21 through the radio frequency line; (3) in the LB PA Mid 21, The transmit signal is amplified by the power amplifier 4G LB PA and reaches the single-port contact 9 of the single-pole eight-throw switch SP8T; (4) The single port of the switch is switched to contact 4, so that the transmit signal reaches the N28 duplex from the LB TX OUT4 port (5) The transmitting signal passes through the N28 duplexer 50 to the LB TRX4 port of LB PA Mid 21, and is connected to the contact 4 of the single-pole nine-throw switch SP9T; (6) The contact 4 of the switch is switched to a single-port contact Point 10, the transmit signal is output from the LB ANT port of LB PA Mid 21; (7) transmit the signal to the first combiner 41 through Path02; (8) transmit the signal to the first antenna through Path01 through the
  • PRX link (1) The receiving signal of the main set enters from the first antenna 31, and reaches the first combiner 41 through Path01; (2) The low-frequency signal received by the main set is separated from the first combiner 41 and output to the LB PA
  • the LB ANT port of Mid 21 is connected to the single-port contact 10 of the single-pole nine-throw switch SP9T in LB PA Mid 21; (3) SP9T is switched to contact 4, and the main set receives low-frequency signals from the LB TRX4 port to the N28 double
  • the duplexer 50 reaches the LB1 IN2 port of the main set receiving LNA BANK 23 through the N28 duplexer 50, and this port is connected to the contact 3 of the single-pole four-throw switch SP4T in the main set receiving LNA BANK 23; (4) the switch will touch Point 3 is switched to single-port contact 1, and the low-frequency signal received by the N28 main set reaches the LB1LNA channel in the main set receiving LNA BANK 23; (5) After the low-
  • the diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06
  • the LB ANT port of FEM 241 which is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 241; (3)
  • the switch is switched to contact 3, so that the diversity reception low-frequency signal is filtered by N28 in FEM 241 (4)
  • the filtered diversity receiving low-frequency signal reaches the LB1 IN2 port of the diversity receiving LNA BANK 25 through RF wiring, and this port is connected to the single-pole four-throw in the diversity receiving LNA BANK 25 Contact 3 of switch SP4T; (5) the switch switches contact 3 to single-port contact 1, so that the filtered diversity reception low-frequency signal reaches the LB1LNA channel in diversity reception LNA BANK 25; (6) the filtered After the diversity receiving low-frequency signal is amplified by
  • PRX MIMO link (1) The receiving signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the low-frequency MIMO signal of the main set received by the second combiner 42 passes through After filtering by the first N28 filter 61, it goes to the main set receiving LNA BANK 23 through the path Path04; (3) the main set receiving low-frequency MIMO signal after filtering enters the main set receiving LNA BANK 23 through the LB0 IN1 port, and reaches No.
  • the MIMO diversity receiving signal enters from the fourth antenna, passes through the path Path07, and reaches the fourth combiner 44; (2) the diversity receiving low-frequency MIMO signal separated by the fourth combiner 44 passes through the second After filtering by the N28 filter 62, it reaches the diversity receiving LNA BANK 25 through the path Path08; (3) the filtered diversity receiving low-frequency MIMO signal enters the diversity receiving LNA BANK 25 through the LB0 IN1 port, and reaches the No.
  • the N28 filter in the FEM 241 is the on-chip filter 122 in the filter component, which is set to carry out N28 filtering for the diversity reception low-frequency signal; the filter component
  • the input port is the low-frequency antenna port LB ANT of FEM241, or includes the low-frequency antenna port LB ANT of FEM241 and the single-pole five-throw switch SP5T; the output port is the N28A OUT port of FEM 241.
  • the filtering assembly 12 can be arranged in the FEM, and the input port 121 can be the input port of the FEM; the output port 123 can be the output port of the FEM; the on-chip filter 122 is connected to the input port and the output port of the FEM between ports.
  • the received signal includes a DRX MIMO low-frequency signal
  • the received signal of a predetermined frequency band includes a DRX MIMO signal of a predetermined frequency band
  • the input port 121 includes a low-frequency input port LB AUX IN of the FEM
  • the output port 123 includes a FEM Low frequency output port LB AUX OUT
  • the on-chip filter is connected between LB AUX IN and LB AUX OUT.
  • the receiving amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK is called the diversity receiving LNA BANK again herein;
  • the first LNA BANK includes the second low-frequency input port group LB0 IN connected and the second The second low-frequency low-noise amplifier path;
  • the LB AUX OUT of the FEM is connected to the input end of the second low-frequency low-noise amplifier path through a port in the second low-frequency input port group;
  • the second low-frequency low-noise amplifier path is set to perform N28 DRX MIMO signal
  • the low noise power is amplified and output to the transceiver 10 .
  • other ports except for connecting the output port 123 can be connected to DRX MIMO low-frequency signals of other frequency bands or left floating.
  • the FEM can also include a switch; the switch includes at least one first contact, connected to the LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the N28 filter.
  • the switching switch may be a single-pole multi-throw switch.
  • the FEM provided with the filtering assembly is shown in Figure 4, and the on-chip filter 122 is an N28 filter; the switch can be a single-pole five-throw switch SP5T, and the switch includes a The first contact, and five second contacts; one of the second contacts is grounded, and the two are respectively connected to the low-frequency ports LB AUX1 and LB AUX2 of the FEM, where LB AUX2 can be connected to the diversity through the external N28 filter
  • the receiving LNA BANK includes the connected first low-frequency input port group LB1 IN; the other two contacts can be connected to the filter input terminals of other frequency band signals.
  • the input end of the on-chip filter 122 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT.
  • the FEM may also include a digital logic unit ASM RFFE arranged for logic control.
  • the diversity reception LNA BANK can also include a second single-pole multi-throw switch;
  • the second low-frequency low-noise amplifier path includes a second low-frequency input port group LB0 IN, a second low-frequency low-noise amplifier LB0LNA, a second data selector, The second low frequency output port LB0OUT;
  • the second single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the second low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the second low-frequency input Different ports in the port group are connected; the output end of the second low-frequency low-noise amplifier is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.
  • the transceiver 10 is respectively connected to LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 242, and diversity receiving LNA BANK 25; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44, the N28 duplexer 50, the first and the third N28 filters 61, 63.
  • connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be seen in the first example and shown in Figure 3b, Figure 3c, Figure 3d, and Figure 3f ;
  • FEM 242 adopts the FEM shown in Figure 4.
  • the first and third N28 filters 61 and 63 are all external filters.
  • the FEM 242 includes an on-chip N28 filter.
  • the difference with the first example is that the second example no longer has an external second N28 filter 62, and the signal received by the fourth antenna 34 is separated by the fourth combiner 44 through the low-frequency received signal of the path Path08 to the FEM 242.
  • LB AUX IN port, N28 filtering is completed by the filter 122 in FEM 242;
  • the diversity receiving LNA BANK 25 is connected with the second N28 filter 62 in the first example, and changed to LB AUX of FEM 242 in the second example OUT port connection;
  • FEM 242 adopts the FEM shown in Figure 4 instead, so compared with the first example, the third N28 filter 63 that is added outside is added, and the LB ANT port of FEM 242 passes through the third combiner 43 from
  • the third antenna 33 receives diversity reception low-frequency signals, and the received low-frequency reception signals are filtered by N28 through the third N28 filter 63, and then sent to the diversity reception LNA BANK 25;
  • the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiver LNA The first low frequency input port of BANK 23.
  • the signal received by the second antenna 32 is divided into low-frequency and medium-high frequency two paths by the second combiner 42, and is connected to the second low-frequency input port LB0 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high-frequency filter respectively IN1 and high frequency input port.
  • the signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT and the medium-high frequency antenna port MHB ANT of the FEM 242; the low-frequency signal is output from the FEM 242 and passed through the Three N28 filters 63 receive the first low-frequency input port LB1 IN2 of the LNA BANK 25 in diversity.
  • the signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency by the fourth combiner 44, and is respectively connected to the second channel of the diversity receiving LNA BANK 25 through the on-chip N28 filter in the FEM 242 and the external high-frequency filter.
  • the TX (Transmit, transmit) link, the PRX link, and the PRX MIMO link are the same as the first example.
  • the diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06
  • the LB ANT port of FEM 24 is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 242; (3) the switch is switched to contact 4, so that the diversity reception low-frequency signal is sent to the LB AUX2 port of FEM 242 (4) after the third N28 filter 63 filters the diversity reception low-frequency signal, to the LB1 IN2 port of the diversity reception LNA BANK 25, this port is connected to the contact 3 of the single-pole four-throw switch SP4T in the diversity reception LNA BANK 25; ( 5) The switch switches the contact 3 to the single-port contact 1, so that the filtered diversity reception low-frequency signal reaches the LB1 LNA channel in the diversity reception LNA BANK 25; (6) The filtered diversity reception low-frequency
  • the MIMO diversity reception signal enters from the fourth antenna, passes through the path Path07, and reaches the fourth combiner 44; (2) the diversity reception low-frequency MIMO signal split by the fourth combiner 44 passes through the path Path08 Arrive at FEM 242; (3) Diversity receiving low-frequency MIMO signal enters FEM 242 through LB AUX IN port, after filtering by N28 of filter 122, output FEM 242 from LB AUX OUT port; (4) Diversity receiving low-frequency MIMO signal after filtering from The LB0 IN1 port enters the diversity receiving LNA BANK 25 and reaches the contact 3 of the single-pole three-throw switch SP3T#3; (5) the switch is switched to the single-port contact 1, so that the diversity receiving low-frequency MIMO signal reaches the diversity receiving LNA BANK 25 (6) Diversity receiving low-frequency MIMO signal is amplified by LB0 LNA, and output from LB0 OUT port of diversity receiving LNA BANK 25 through data selector MUX2;
  • Only one filter component is included in the second example, and the filter component is set in the FEM 242, and the on-chip filter 122 is set to perform N28 filtering for diversity reception low-frequency MIMO signals; the input port in the filter component is the LB AUX IN port of the FEM242, The output port is the LB AUX OUT port of FEM 242.
  • the filtering component 12 can be arranged in the FEM, and can include a first filtering component and a second filtering component; the input port of the first filtering component can be the antenna port of the FEM, and the output port can be a predetermined The output port of the frequency band, the on-chip filter is connected between the antenna port of the FEM and the output port of the predetermined frequency band; the input port of the second filtering component is the input port of the FEM, and the output port is the output port of the FEM; the on-chip filter is connected Between the input and output ports of the FEM.
  • the received signal includes a DRX low-frequency signal and a DRX MIMO low-frequency signal; correspondingly, the received signal of a predetermined frequency band includes a DRX signal and a DRX MIMO signal of a predetermined frequency band; the input port 121 includes a low-frequency antenna port of a FEM LB ANT and low frequency input port LB AUX IN; output port 123 includes the output port and low frequency output port LB AUX OUT of the predetermined frequency band of FEM;
  • the on-chip filters in the first and second filtering components are the first and second filters respectively, and the first filter is connected between the LB ANT and the output port of the predetermined frequency band, and is set as a pair of DRX low frequency The signal is filtered in a predetermined frequency band; the second filter is connected between LB AUX IN and LB AUX OUT, and is set to filter the DRX MIMO low-frequency signal in a predetermined frequency band.
  • the receiving and amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK includes a connected first low-frequency input port group LB1 IN and a first low-frequency low-noise amplifier channel, and a connected second low-frequency input port Group LB0 IN and the second low-frequency low-noise amplifier channel; the N28 OUT port of the FEM is connected to the input end of the first low-frequency low-noise amplifier channel through a port in the first low-frequency input port group, and the LB AUX OUT of the FEM is through the second low-frequency input One port in the port group is connected to the input end of the second low-frequency low-noise amplifier path; the first low-frequency low-noise amplifier path and the second low-frequency low-noise amplifier path are respectively set to perform low-noise power After being amplified, it is output to the transceiver 10 .
  • connection output port 123 in the first/second low-frequency input port group, other ports except for the connection output port 123 can be connected to DRX/DRX MIMO low-frequency signals of other frequency bands or left floating.
  • the FEM can also include a switch, which includes at least one first contact, connected to LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the on-chip filter 122 input terminal.
  • the changeover switch may be a single-pole multiple-throw switch.
  • the FEM that is provided with filtering assembly is shown in Figure 6, and on-chip filter 122 is an N28 filter; contact, and five second contacts; one of the second contacts is connected to the input of the first filter 1221, one is grounded, and one is connected to the low frequency port LB AUX1 of the FEM; the other two contacts can be connected to other frequency band signals
  • the input end of the filter; the output end of the first filter 1221 is directly connected to the N28 OUT port of the FEM.
  • the input end of the second filter 1222 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT.
  • the FEM may also include a digital logic unit ASM RFFE arranged for logic control.
  • the diversity receiving LNA BANK can also include first and second single-pole multi-throw switches;
  • the first/second low-noise amplifier path can include first/second low-frequency low-noise amplifier, first/second data selection device, the first/second low frequency output port;
  • the first and second single-pole multi-throw switches may each include a first contact and a plurality of second contacts, the first contact of the first single-pole multi-throw switch is connected to the input end of the first low-frequency low-noise amplifier, and multiple The second contacts are respectively connected to different ports in the first low-frequency input port group; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver through the first low-frequency output port.
  • device 10 10.
  • the first contact of the second single-pole multi-throw switch is connected to the input end of the second low-frequency low-noise amplifier, and a plurality of second contacts are respectively connected to different ports in the second low-frequency input port group; the output of the second low-frequency low-noise amplifier The end is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.
  • the transceiver 10 is connected to LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 243, and diversity receiving LNA BANK 25 respectively; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44 , the N28 duplexer 50 , and the first N28 filter 61 .
  • connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be referred to the first example and Figure 3b, Figure 3c, Figure 3d, and Figure 3f. Show.
  • the FEM 243 in the third example adopts the FEM shown in Fig. 6 instead, comprises the first filter 1221 and the second filter 1222, both of them are N28 filters in the chip, are respectively set for diversity Receive low-frequency signals and diversity receive low-frequency MIMO signals for N28 filtering; the connection relationship of FEM 243 in the radio frequency system is shown in Figure 7.
  • the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiver LNA The first low frequency input port of BANK 23.
  • the signal that the second antenna 32 receives is divided into low-frequency and medium-high frequency two-way by the second combiner 42, connects the second low-frequency input port and the second low-frequency input port of the LNA BANK 23 of the main collection through the first N28 filter 61 and the high-frequency filter respectively High frequency input port.
  • the signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 243 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 243 is connected to the FEM 243
  • the input end of the first filter, the port N28A OUT of the FEM 243 connected to the output end of the first filter is connected to the first low frequency input port LB1 IN2 of the diversity receiving LNA BANK 25.
  • the signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, and is respectively connected to the second low frequency of the diversity receiving LNA BANK 25 through the second filter in the FEM 243 and the external high-frequency filter.
  • the TX (Transmit, transmit) link, the PRX link, the DRX link, and the PRX MIMO link are the same as the first example; the DRX MIMO link is the same as the second example.
  • FEM 243 includes the filtering component that the first filter 1221 in FEM 243 belongs to input port, in the filtering component that the first filter 1221 in FEM 243 belongs to input port is the low-frequency antenna port LB ANT of FEM241, or comprises the low-frequency antenna port LB of FEM241 ANT and single-pole five-throw switch SP5T; the output port is the N28A OUT port of FEM 241.
  • the input port of the filter assembly to which the second filter 1222 belongs is the LB AUX IN port of the FEM242, and the output port is the LB AUX OUT port of the FEM242.
  • filter assembly 12 is arranged in PA Mid, and input port 121 is the input port of PA Mid; Output port 123 is the output port in PA Mid; On-chip filter 122 is connected at input port and output port between.
  • the PA Mid may be an LB PA Mid
  • the received signal includes a PRX MIMO low-frequency signal
  • the received signal of a predetermined frequency band includes a PRX MIMO signal of a predetermined frequency band.
  • the input port 121 may include the low-frequency input port LB AUX IN of the LB PA Mid; the output port 123 may include the low-frequency output port LB AUX OUT of the LB PA Mid.
  • the receiving and amplifying component 13 can be arranged in the second LNA BANK, and the second LNA BANK is also referred to as the main set receiving LNA BANK in this paper, and the main set receiving here includes PRX and PRX MIMO.
  • the second LNA BANK includes the connected low-frequency input port group LB0 IN and the low-frequency low-noise amplifier channel; the LB AUX OUT of LB PA Mid is connected to the input end of the low-frequency low-noise amplifier channel through a port in the low-frequency input port group; the low-frequency low-noise amplifier The path is set to perform low-noise power amplification on the N28PRX MIMO signal and output it to the transceiver 10.
  • other ports except for connecting the output port 123 can be connected to PRX MIMO low-frequency signals of other frequency bands or left floating.
  • the LB PA Mid with built-in filter components is shown in Figure 8, the on-chip filter 122 is an N28 filter, the input end is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT.
  • the main receiver LNA BANK can also include a single-pole multi-throw switch;
  • the low-noise amplifier path can include a low-frequency low-noise amplifier, a data selector, and a low-frequency output port;
  • the single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to different ports in the low-frequency input port group connected; the output end of the low-frequency low-noise amplifier is connected to the low-frequency output port through the data selector, and connected to the transceiver 10 through the low-frequency output port.
  • the transceiver 10 is respectively connected to LB PA Mid 211, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 24, and diversity receiving LNA BANK 25; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44 , the N28 duplexer 50 , the second and the third N28 filters 62 , 63 .
  • connection relationship of the MHB PA Mid 22, the main set receiving LNA BANK 23, and the diversity receiving LNA BANK 25 in the radio frequency system can be referred to in the first example and shown in Figure 3c, Figure 3d, and Figure 3f.
  • the difference with the first example is that there is no on-chip N28 filter in the FEM 24 of the fourth example, and there are second and third N28 filters 62 and 63 that are plugged in; in addition, the LB PA Mid 211 of the fourth example is changed to The LB PA Mid shown in Figure 8 is adopted, including the on-chip N28 filter, and the external N28 filter 61 is canceled; the connection relationship of LB PA Mid 211 and FEM 24 in the radio frequency system is shown in Figure 9a and Figure 9b respectively Show.
  • the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA The first low frequency input port LB1 IN2 of BANK 23.
  • the signal received by the second antenna 32 is divided into low-frequency and medium-high frequency through the second combiner 42, respectively through the built-in N28 filter in LB PA Mid 21 and the external high-frequency filter, and connected to the main receiver LNA BANK 23
  • the second low frequency input port LB0 IN1 and high frequency input port is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA The first low frequency input port LB1 IN2 of BANK 23.
  • the signal received by the second antenna 32 is divided into low-frequency and
  • the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, respectively connected to the low-frequency antenna port LB ANT of the FEM 24 and the medium-high frequency antenna port MHB ANT, wherein the low-frequency signal is output from the LB AUX2 port of the FEM 24, The first low-frequency input port LB1 IN2 of the diversity receiving LNA BANK 23 through the external N28 filter 63.
  • the fourth antenna 34 is divided into low-frequency and medium-high frequency two paths by the fourth combiner 44, and connects the second low-frequency input port LB0 IN1 and the high-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 through the second N28 filter 62 and the high-frequency filter respectively. input port.
  • the TX (Transmit, transmit) link, the PRX link, and the DRX MIMO link are the same as the first example; the DRX link is the same as the second example.
  • PRX MIMO link (1) The receiving signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the low-frequency MIMO signal of the main set received by the second combiner 42 passes through Path04, to LB PA Mid 211; (3) The low-frequency MIMO signal received by the main set enters LB PA Mid 211 from the LB AUX IN port, N28 filtering is performed by the on-chip N28 filter, and LB PA Mid 211 is output from the LB AUX OUT port; (4) The filtered low-frequency MIMO signal of the main receiver enters the main receiver LNA BANK 23 through the LB0 IN1 port, and reaches the contact 3 of the single-pole three-throw switch SP3T#3; (5) The switch is switched to the single-port contact 1 , so that the filtered main set receives the low-frequency MIMO signal to reach the LB0LNA channel in the main set receiving LNA BANK 23; (6) After the filtered main set
  • the fourth example includes a filter component, which is set in LB PA Mid 211, and the filter in the filter component is set to perform N28 filtering on the low-frequency MIMO signal received by the main set; the input port in the filter component is LB AUX of LB PA Mid 211 IN port, the output port is LB AUX OUT port of LB PA Mid 211.
  • the FEM 24 can be replaced by the FEM in any one of the first example, the second example, and the third example.
  • the DRX link and/or or DRX MIMO link using the link in the corresponding example when using the FEM in any of the above examples, the DRX link and/or or DRX MIMO link using the link in the corresponding example.
  • the FEM is replaced by the FEM in the third example; in the fifth example, there are multiple filter components, including two filter components arranged in the FEM as shown in Figure 6 , and a filtering component set in LB PA Mid as shown in Figure 8.
  • the radio frequency system of the fifth example is shown in Figure 10, and the transceiver 10 is respectively connected to LB PA Mid 211, MHB PA Mid 22, main set receiving LNA BANK 23 (LNA BANK#1 in Figure 10), FEM 243, diversity receiving LNA BANK 25 (LNA BANK#2 among Fig. 10);
  • the antenna includes the first antenna 31, the second antenna 32, the third antenna 33, and the antenna 31;
  • the radio frequency system also includes the first combiner 41, the second antenna The second combiner 42 , the third combiner 43 , the fourth combiner 44 , and the N28 duplexer 50 .
  • connection relationship of the MHB PA Mid 22, the main set receiving LNA BANK 23, and the diversity receiving LNA BANK 25 in the radio frequency system can be referred to in the first example and shown in Figure 3c, Figure 3d, and Figure 3f.
  • the difference from the fourth example is that in the fifth example, there is no second and third N28 filters installed outside, and these two filters are changed to on-chip N28 filters, all of which are built into the FEM 243.
  • LB PA Mid 211 uses the LB PA Mid shown in Figure 8
  • FEM 243 uses the FEM shown in Figure 6.
  • the first antenna 31 is respectively connected to the LB PA Mid 211 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main set receiving LNA
  • the signal received by the second antenna 32 is divided into low-frequency and medium-high frequency through the second combiner 42, and is respectively connected to the main set receiving LNA BANK 23 through the N28 filter in the LB PA Mid 211 and the external high-frequency filter.
  • the signal received by the third antenna 33 is divided into low frequency and medium high frequency two paths by the third combiner 43, respectively connected to the low frequency antenna port LB ANT of FEM 243 and the medium and high frequency antenna port MHB ANT; the LB ANT port of FEM 243 is connected to FEM
  • the input end of the first N28 filter in 243, the N28A OUT of the FEM 243 connected to the output end of the first N28 filter is connected to the first low frequency input port LB1 IN2 of the diversity reception LNA BANK 25.
  • the signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, respectively through the second N28 filter in the FEM 243 and the external high-frequency filter, and connected to the first channel of the diversity receiving LNA BANK 25.
  • the TX (Transmit, transmit) link, the PRX link, and the DRX link are the same as the first example; the DRX MIMO link is the same as the second example; the PRX MIMO link is the same as the fourth example.
  • the embodiment of the present application also provides a communication device, including the receiving device or the radio frequency system as provided in any one of the above embodiments.
  • the communication device does not increase the area and cost of the main board by building the filter into the filter component, and has good receiving performance.
  • the communication device can support N28 MIMO.

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Abstract

一种接收器件、射频***及通信设备；其中，接收器件包括：滤波组件、接收放大组件；滤波组件包括：输入端口，设置成接收来自天线的接收信号；片内滤波器，设置成对接收的接收信号进行滤波，得到预定频段的接收信号；输出端口，设置成将预定频段的接收信号发送给接收放大组件；接收放大组件设置成对预定频段的接收信号进行功率放大后输出。

Description

一种接收器件、射频***及通信设备 技术领域
本文涉及射频技术领域，尤其涉及一种接收器件、射频***及通信设备。
背景技术
随着通信网络的发展，需要支持不断增加的每种通信网络制式，但受限于终端设备对于尺寸的制约，主板PCB(Printed Circuit Board，印制电路板)的空间并不会随着通信网络制式的增多而相应增长，这将导致主板PCB的空间布局布线非常紧张。
发明概述
以下是对本申请详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供了一种接收器件、射频***及通信设备，可节约主板空间，降低成本。
一方面，本申请实施例提供了一种接收器件，包括：滤波组件、接收放大组件；滤波组件包括：输入端口，设置成接收来自天线的接收信号；片内滤波器，设置成对接收的接收信号进行滤波，得到预定频段的接收信号；输出端口，设置成将预定频段的接收信号发送给接收放大组件；接收放大组件设置成对预定频段的接收信号进行功率放大后输出。
另一方面，本申请实施例提供了一种射频***，包括：天线、收发器、本申请实施例提供的接收器件。
再一方面，本申请实施例提供了一种通信设备，包括本申请实施例提供的射频***。
与相关技术相比，本申请实施例中，对于接收框架进行了优化，将滤波器集成到滤波组件中，这样不会因为增加外挂的滤波器而增加所占用的主板面积，因此能够提高集成度，降低成本；接收器件如果设置成能够接收其它频段的信号，则多个滤波组件输出的不同频段的信号可以在同一个模组内完成匹配，降低端口失配的可能性，提高接收性能。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
附图用来提供对本申请技术方案的理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本申请的技术方案，并不构成对本申请技术方案的限制。
图1a是本申请实施例提供的接收器件的示意图；
图1b是本申请实施例提供的射频***的示意图；
图2是示例性实施例中FEM的示意图之一；
图3a是第一示例中射频***的示意图；
图3b是第一示例中LB PA Mid的连接关系示意图；
图3c是第一示例中MHB PA Mid的连接关系示意图；
图3d是第一示例中主集接收LNA BANK的连接关系示意图；
图3e是第一示例中FEM的连接关系示意图；
图3f是第一示例中分集接收LNA BANK的连接关系示意图；
图4是示例性实施例中FEM的示意图之二；
图5是第二示例中FEM的连接关系示意图；
图6是示例性实施例中FEM的示意图之三；
图7是第三示例中FEM的连接关系示意图；
图8是示例性实施例中LB PA Mid的示意图；
图9a是第四示例中LB PA Mid的连接关系示意图；
图9b是第四示例中FEM的连接关系示意图；
图10是第五示例中射频***的示意图。
附图标记说明：
10：收发器；11：天线；12：滤波组件；13：接收放大组件；121：输入端口；122：片内滤波器；1221：第一滤波器；1222：第二滤波器；123：输出端口；21：LB PA Mid；22：MHB PA Mid；23：主集接收LNA BANK；24：FEM；25：分集接收LNA BANK；31：第一天线；32：第二天线；33：第三天线；34：第四天线；41：第一合路器；42：第二合路器；43：第三合路器；44：第四合路器；50：N28双工器；61：第一N28滤波器；62：第二N28滤波器；63：第三N28滤波器；211：内置N28滤波器的LB PA Mid；241：内置N28滤波器的FEM之一；242：内置N28滤波器的FEM之二；243：内置N28滤波器的FEM之三。
详述
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行详细说明。应当理解，后文所描述的实施例仅用于解释本申请，并不用于限定本申请。
可以理解，在本申请中如涉及“第一”、“第二”等的描述仅用于描述中进行区分，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
本申请实施例涉及的接收器件、射频***可以应用到具有无线通信功能的通信设备中；通信设备可以包括以下任一种或多种：手持设备、车载设备、可穿戴设备、计算设备、其它处理设备、MS(Mobile Station，移动台)、每种形式的UE(User Equipment，用户设备)；UE比如可以是手机或平板电脑等。
本申请实施例提供一种接收器件，应用于接收通路，如图1a所示，包括：
滤波组件12、接收放大组件13；
滤波组件12包括：
输入端口121，设置成接收来自天线的接收信号；
片内滤波器122，设置成对接收的接收信号进行滤波，得到预定频段的接收信号；
输出端口123，设置成将预定频段的接收信号发送给接收放大组件13；
接收放大组件13设置成对预定频段的接收信号进行功率放大后输出。
本申请实施例中，对于接收框架进行了优化，将片内滤波器122集成到滤波组件12中，这样不会因为增加外挂的滤波器而增加所占用的主板面积，因此可以提高集成度，降低成本；接收器件如果设置成能够接收其它频段的信号，则多个滤波组件12输出的不同频段的信号可以在同一个模组内完成匹配，降低端口失配的可能性，提高接收性能。
本申请实施例中，滤波组件12可理解设置在一封装芯片中，比如设置在FEM(Front-end Module，前端模组)芯片、PA Mid(Power Amplifier Modules including Duplexers，功率放大器模组)芯片等器件中。可以通过在FEM芯片和/或PA Mid等芯片中内置片内滤波器122，来实现滤波组件12的滤波功能。其中，预定频段和所采用的片内滤波器有关，比如片内滤波器是N28滤波器，则是对接收信号进行N28滤波，得到N28频段的接收信号。
一种示例性实施例中，来自天线的接收信号包括多进多出主集接收信号的情况下，设置成接收所述多进多出主集接收信号的滤波组件12封装在功率放大模组PA Mid中；来自天线的接收信号包括分 集接收信号和/或多进多出分集接收信号的情况下，设置成接收所述分集接收信号和/或多进多出分集接收信号的滤波组件12封装在射频前端模组FEM中，比如设置成接收所述分集接收信号的滤波组件12封装在一个FEM中，而设置成接收多进多出分集接收信号的滤波组件12封装在另一个FEM中。
本实施例可以提高整个接收框架的集成度，通过将主集MIMO信号对应的滤波组件封装在PA Mid中，将分集接收信号和分集MIMO信号对应的滤波组件封装在FEM中，这样当也需要接收其它频段的信号时，不同频段的信号可以在同一个芯片内完成匹配，降低端口失配的可能性，提高接收性能。
本申请实施例中，接收放大组件13可设置在LNA(Low Noise Amplifier，低噪放)BANK(组)芯片中；LNA BANK可以是集成了低噪放和开关的接收模组，其中的低噪放通路的输入端，与滤波组件12的输出端口123相连。
本申请实施例中，接收通路可以与接收信号使用的天线对应，当只有一个天线时，接收通路可以相应为一个；当存在多个天线时，可以相应存在多个接收通路。
本申请实施例还提供一种射频***，如图1b所示，包括收发器10、天线11以及本申请实施例提供的接收器件；其中，滤波组件12的输入端口121从天线11获得接收信号，由片内滤波器122滤波获得预定频段的接收信号，通过输出端口123发送到接收放大组件13；接收放大组件13对预定频段的接收信号进行放大后输出给收发器10。
本申请实施例中，天线11可以设置成支持不同频段的射频信号的接收和发射；该射频信号可以包括2G、3G、4G、5G信号等。天线11可采用任何结构的具有谐振元件的天线，比如但不限于以下一种或多种：单极天线、偶极天线、带状天线、环形天线、螺旋形天线、阵列天线、贴片天线、缝隙天线等。不同结构的天线可设置成不同频段或频段组合。
本申请实施例中，射频***中可以包括独立或与滤波组件集成在同一个芯片中的发射组件，设置成将来自收发器的发射信号传输给天线。
本申请实施例中，收发器10可增加端口，与输出端口123相连，设置成接收由滤波器(外挂滤波器和/或片内滤波器)滤波后得到的预定频段的接收信号。
本申请实施例中，接收通路为多个的情况下，接收器件为多个，分别对应不同的接收通路；和/或，接收器件中的滤波组件和/或接收放大组件为多个，分别对应不同的接收通路。
一种示例性实施例中，片内滤波器122可以但不限于为N28滤波器；预定频段的接收信号为N28频段的接收信号。
N28的无线频率低，波长相对比较长，绕射能力强，覆盖能力更大，将成为5G网络重要的低频覆盖频段。
由于N28是一个比较宽的频段，应用时为了避免邻频干扰，可以只使用N28中的部分频段，称为N28A或N28B；在有些应用场景(如LTE)下也使用B28来代替N28。本文中的N28频段根据应用场景的不同，可能会被适应性称为N28A、N28B、B28、B28A等频段。
一种示例性实施例中，接收通路为多个，分别对应于PRX(Primary Receive，主集接收)信号和DRX(Diversity Receive，分集接收)信号；滤波组件12为多个，分别对应于不同的接收通路。
本实施例中，滤波组件12可以但不限于为两个，一个设置成接收主集接收信号并进行滤波，得到预定频段的主集接收信号；另一个设置成接收分集接收信号并进行滤波，得到预定频段的分集接收信号。其它实施例中，可以只为主集或分集接收信号对应的接收通路配置滤波组件12，分集或主集接收信号对应的接收通路则使用外挂的滤波器。
本实施例中，在包括多个滤波组件12的情况下，多个滤波组件12可以设置在同一个芯片或器件中，或可以将对应于PRX信号的滤波组件12设置在一个芯片或器件中，将对应于DRX信号的滤波组件12设置在另一个芯片或器件中，或可以将多个滤波组件12设置在多个芯片或器件中。
一种示例性实施例中，为了提高低频网络的下载速率，可以通过配置MIMO(Multiple-Input Multiple-Output，多进多出)来获取更大的吞吐量。MIMO功能是指分别使用多个发射天线和接收天线，充分利用空间资源，通过多个天线实现多发多收的功能，可以在不增加频谱资源和天线发射功率 的情况下，成倍提高***信道容量。
本实施例中，在配置MIMO的情况下，接收通路为多个，可以分别对应于不同的信号，比如4个接收通路可以分别对应于PRX信号、DRX信号、PRX MIMO信号、DRX MIMO信号；相应地，射频***中的天线11可包括多个，天线11和接收通路一一对应，比如可以包括4个天线，分别用在TX(发射)及PRX链路中、DRX链路中、PRX MIMO链路中、DRX MIMO链路中。根据需要，可以为每种信号配置一个或多个接收通路，一个或多个天线。
本实施例中，滤波组件12可以为多个，分别对应于不同的接收通路。其它实施例中，接收通路为多个时，也可以只设置一个滤波组件12，供一个接收通路使用，其它接收通路使用外挂的滤波器；或者，任一个接收通路可以对应一个或多个滤波组件12。
本实施例的一种实施方式中，滤波组件12可以但不限于为四个，分别设置成接收PRX信号、DRX信号、PRX MIMO信号、DRX MIMO信号并进行预定频段的滤波后输出。
本实施例的另一种实施方式中，滤波组件12至少为两个，多个接收通路中，部分接收通路使用滤波组件12，其余接收通路使用外挂的滤波器。比如来自天线的接收信号包括分集接收信号和多进多出分集接收信号的情况下，两个滤波组件12分别设置成接收所述分集接收信号和多进多出分集接收信号。
本实施例中，多个滤波组件12可以设置在同一个芯片或器件中；或可以将对应于PRX信号、PRX MIMO信号的滤波组件12设置在一个芯片或器件中，将对应于DRX信号、DRX MIMO信号的滤波组件12设置在另一个芯片或器件中。
一种示例性实施例中，接收通路为多个，接收放大组件为多个，分别对应不同的接收通路。
本实施例的一种实施方式中，接收通路为两个，分别对应于PRX信号和DRX信号；接收放大组件相应为两个，分别对预定频段的PRX信号、DRX信号进行放大后输出。
本实施例的另一种实施方式中，接收通路为四个，分别对应于PRX信号、DRX信号、PRX MIMO、DRX MIMO信号；接收放大组件相应为四个，分别对预定频段的PRX信号、DRX信号、PRX MIMO信号、DRX MIMO信号进行放大后输出。
本实施例中，多个接收放大组件可以设置在同一个芯片或器件中；或可以将对应于PRX信号、PRX MIMO信号的接收放大组件设置在一个芯片或器件中，将对应于DRX信号、DRX MIMO的信号接收放大组件设置在另一个芯片或器件中。
一种示例性实施例中，射频***还可以包括：合路器，设置成将从天线11进入的接收信号分成低频接收信号和中高频接收信号。
本实施例中，滤波组件12的输入端口可以包括低频输入端口和中高频输入端口，或滤波组件12可以包括低频滤波组件和中高频滤波组件。
一种示例性实施例中，滤波组件12包括多个不同频段的片内滤波器122和多个输出端口123；多个输出端口123可以按照一一对应的方式分别连接多个不同频段的片内滤波器122的输出端；
接收器件12还可以包括：切换开关；该切换开关包括至少一个第一触点和多个第二触点；第一触点连接于输入端口121，多个第二触点分别连接不同频段的片内滤波器122的输入端。
本实施例中，通过对切换开关中第一触点和第二触点之间的连接关系进行切换，可以在多个频段的滤波器中进行选择，从而能使接收器件支持多个频段。
本实施例中，滤波组件12和切换开关可以但不限于设置在同一个模组中。
一种示例性实施例中，切换开关可以为单刀多掷开关。
一种示例性实施例中，接收放大组件13设置在LNA BANK中；接收放大组件13包括：相连的输入端口组和低噪放通路；滤波组件12的输出端口123通过输入端口组中的一个端口连接低噪放通路的输入端；低噪放通路设置成对预定频段的接收信号进行低噪声功率放大后输出。
一种示例性实施例中，滤波组件12可以设置在FEM中，输入端口121可以是FEM的天线端口，输出端口123可以是FEM上的预定频段的输出端口；片内滤波器122连接在低频天线端口和预定频 段的输出端口之间。
本实施例的一种实施方式中，接收信号包括DRX低频信号，预定频段的接收信号包括预定频段的DRX信号；输入端口121可以是FEM的低频天线端口LB ANT，输出端口123可以是FEM上的预定频段的输出端口，比如但不限于为N28 OUT端口；片内滤波器122连接在低频天线端口和预定频段的输出端口之间。
本实施方式中，接收放大组件13可以设置在第一LNA BANK中，本文中又将第一LNA BANK称为分集接收LNA BANK，这里所说的分集接收包括DRX和DRX MIMO。第一LNA BANK包括相连的第一低频输入端口组LB1 IN和第一低频低噪放通路；FEM的N28 OUT端口通过第一低频输入端口组中的一个端口连接第一低频低噪放通路的输入端；第一低频低噪放通路设置成对N28 DRX信号进行低噪声功率放大后输出给收发器10。
本实施方式中，第一低频输入端口组中，除了连接输出端口123以外的其它端口可以连接其它频段的DRX低频信号或悬空。
本实施方式中，FEM还可以包括切换开关，该切换开关包括至少一个第一触点，连接于LB ANT，还包括多个第二触点；第二触点中的一个连接片内滤波器122的输入端。
本实施方式中，切换开关可以为单刀多掷开关。
本实施方式的一个示例中，设置有滤波组件的FEM如图2所示，片内滤波器122为N28滤波器；切换开关为单刀五掷开关SP5T；第二触点中还可以有一个接地，一个连接FEM的低频端口LB AUX1。本示例中，FEM还可以包括设置成进行逻辑控制的数字逻辑单元ASM RFFE。
本实施方式的一个示例中，切换开关中全部或部分其它第二触点可以连接其它频段信号的滤波器输入端，从而可以支持多个频段的接收；片内滤波器122的输出端直接连接FEM的N28 OUT端口。
本实施方式中，第一LNA BANK还可以包括第一单刀多掷开关；第一低噪放通路可以包括第一低频低噪放LB1LNA、第一数据选择器、第一低频输出端口LB1 OUT；
其中，第一单刀多掷开关可以包括一个第一触点和多个第二触点，第一触点连接第一低频低噪放的输入端，多个第二触点分别和第一低频输入端口组中的不同端口相连；第一低频低噪放的输出端经第一数据选择器连接第一低频输出端口，通过第一低频输出端口连接到收发器10。
下面用第一示例说明本实施方式，本示例的射频***如图3a所示，收发器10分别连接LB PA Mid 21、MHB PA Mid(Medium High Band Power Amplifier Modules including Duplexers，中高频功率放大器模组)22、主集接收LNA BANK 23(图3a中的LNA BANK#1，本文又称为第二LNA BANK)、FEM 241、分集接收LNA BANK 25(图3a中的LNA BANK#2)；天线包括第一天线31、第二天线32、第三天线33、天线31；射频***中还包括第一合路器41、第二合路器42、第三合路器43、第四合路器44、N28双工器50、第一、第二N28滤波器61、62。其中，LB PA Mid 21、MHB PA Mid 22、主集接收LNA BANK 23、FEM 241、分集接收LNA BANK 25在射频***中的连接关系分别如图3b、图3c、图3d、图3e、图3f所示。第一、第二N28滤波器61、62为外挂滤波器。FEM 241中包括一个片内的N28滤波器。
第一示例中，第一天线31通过第一合路器41分别连接LB PA Mid 21和MHB PA Mid 22；LB PA Mid 21外接N28双工器50，N28双工器50连接到主集接收LNA BANK 23的第一低频输入端口LB1IN2。第二天线32接收的信号通过第二合路器42分为低频和中高频两路，分别通过第一N28滤波器61和高频滤波器连接主集接收LNA BANK 23的第二低频输入端口LB0 IN1和高频输入端口。第三天线33接收的信号通过第三合路器43分为低频和中高频两路，分别连接FEM 241的低频天线端口LB ANT和中高频天线端口MHB ANT，FEM 241的LB ANT端口连接FEM 241中的N28滤波器的输入端，该N28滤波器的输出端所连接的FEM 241的N28A OUT连接到分集接收LNA BANK 25的第一低频输入端口LB1 IN2。第四天线34接收的信号通过第四合路器44分为低频和中高频两路，分别通过第二N28滤波器62和高频滤波器连接分集接收LNA BANK 25的第二低频输入端口LB0 IN1和高频输入端口。
下面详细描述第一示例的工作原理。
TX(Transmit，发射)链路：(1)发射信号从收发器10的TX0LB1端口输出；(2)经射频线到达LB PA Mid 21的4G LB RFIN端口；(3)在LB PA Mid 21中，发射信号经功率放大器4G LB PA放大后到达单刀八掷开关SP8T的单端口触点9；(4)该开关的单端口切换至触点4，从而使发射信号从LB TX OUT4端口到达N28双工器50；(5)发射信号经N28双工器50，至LB PA Mid 21的LB TRX4端口，连接单刀九掷开关SP9T的触点4；(6)该开关中触点4切换到单端口触点10，发射信号从LB PA Mid 21的LB ANT端口输出；(7)发射信号经Path02路径至第一合路器41；(8)发射信号经第一合路器41经Path01至第一天线31。
PRX链路：(1)主集接收信号从第一天线31进入，经Path01路径到达第一合路器41；(2)经第一合路器41分出主集接收低频信号输出至LB PA Mid 21的LB ANT端口，该端口连接LB PA Mid 21中的单刀九掷开关SP9T的单端口触点10；(3)SP9T切换到触点4，主集接收低频信号从LB TRX4端口到达N28双工器50，经N28双工器50到达主集接收LNA BANK 23的LB1 IN2端口，该端口连接主集接收LNA BANK 23中的单刀四掷开关SP4T的触点3；(4)该开关将触点3切换至单端口触点1，N28主集接收低频信号到达主集接收LNA BANK 23中的LB1LNA通路；(5)N28主集接收低频信号经LB1LNA放大后，经数据选择器MUX1从主集接收LNA BANK 23的LB1 OUT端口输出；(6)经SDR PRXE端口进入收发器10。
DRX链路：(1)分集接收信号从第三天线33进入，经路径Path05，到第三合路器43；(2)从第三合路器43分出分集接收低频信号，经路径Path06到达FEM 241的LB ANT端口，该端口连接FEM 241中的单刀五掷开关SP5T的单端口触点6；(3)该开关切换到触点3，从而使分集接收低频信号经FEM 241中的N28滤波器滤波后，至FEM 241的N28A OUT端口；(4)滤波后的分集接收低频信号经射频走线到达分集接收LNA BANK 25的LB1 IN2端口，该端口连接分集接收LNA BANK 25中的单刀四掷开关SP4T的触点3；(5)该开关将触点3切换至单端口触点1，从而使滤波后的分集接收低频信号到达分集接收LNA BANK 25中的LB1LNA通路；(6)滤波后的分集接收低频信号经LB1LNA放大后，经数据选择器MUX1从分集接收LNA BANK 25的LB1 OUT端口输出；(7)放大后的信号经SDR DRXE端口进入收发器10。
PRX MIMO链路：(1)MIMO主集接收信号从第二天线进入，经路径Path03，至第二合路器42；(2)第二合路器42分出的主集接收低频MIMO信号经第一N28滤波器61滤波后，经路径Path04至主集接收LNA BANK 23；(3)滤波后的主集接收低频MIMO信号经LB0 IN1端口进入主集接收LNA BANK 23中，至三号单刀三掷开关SP3T#3的触点3；(4)该开关切换到单端口触点1，从而使滤波后的主集接收低频MIMO信号到达主集接收LNA BANK 23中的LB0LNA通路；(5)滤波后的主集接收低频MIMO信号经LB0LNA放大后，经数据选择器MUX2从主集接收LNA BANK 23的LB0 OUT端口输出；(6)经SDR PRX10端口进入收发器10。
DRX MIMO链路：(1)MIMO分集接收信号从第四天线进入，经路径Path07，到第四合路器44；(2)第四合路器44分出的分集接收低频MIMO信号经第二N28滤波器62滤波后，经路径Path08到达分集接收LNA BANK 25；(3)滤波后的分集接收低频MIMO信号经LB0 IN1端口进入分集接收LNA BANK 25中，到达三号单刀三掷开关SP3T#3的触点3；(4)该开关切换到单端口触点1，从而使滤波后的分集接收低频MIMO信号到达分集接收LNA BANK 25中的LB0LNA通路；(5)滤波后的分集接收低频MIMO信号经LB0LNA放大后，经数据选择器MUX2从分集接收LNA BANK 25的LB0 OUT端口输出；(6)经SDR DRX10端口进入收发器10。
第一示例中仅包含一个滤波组件，该滤波组件设置在FEM 241中，FEM 241中的N28滤波器即滤波组件中的片内滤波器122，设置成针对分集接收低频信号进行N28滤波；滤波组件中的输入端口为FEM241的低频天线端口LB ANT，或包括FEM241的低频天线端口LB ANT和单刀五掷开关SP5T；输出端口为FEM 241的N28A OUT端口。
一种示例性实施例中，滤波组件12可以设置在FEM中，输入端口121可以为FEM的输入端口；输出端口123可以为FEM的输出端口；片内滤波器122连接在FEM的输入端口和输出端口之间。
本实施例的一种实施方式中，接收信号包括DRX MIMO低频信号，预定频段的接收信号包括预定频段的DRX MIMO信号；输入端口121包括FEM的低频输入端口LB AUX IN；输出端口123包括 FEM的低频输出端口LB AUX OUT；片内滤波器连接在LB AUX IN和LB AUX OUT之间。
本实施方式中，接收放大组件13可以设置在第一LNA BANK中，本文中又将第一LNA BANK称为分集接收LNA BANK；第一LNA BANK包括相连的第二低频输入端口组LB0 IN和第二低频低噪放通路；FEM的LB AUX OUT通过第二低频输入端口组中的一个端口连接第二低频低噪放通路的输入端；第二低频低噪放通路设置成对N28 DRX MIMO信号进行低噪声功率放大后输出给收发器10。
本实施方式中，第二低频输入端口组中，除了连接输出端口123以外的其它端口可以连接其它频段的DRX MIMO低频信号或悬空。
本实施方式中，FEM还可以包括切换开关；该切换开关包括至少一个第一触点，连接于LB ANT，还包括多个第二触点；第二触点中的一个连接到N28滤波器。
本实施方式中，该切换开关可以为单刀多掷开关。
本实施方式的一种示例中，设置有滤波组件的FEM如图4所示，片内滤波器122为N28滤波器；该切换开关可以为单刀五掷开关SP5T，该开关包括一个连接于LB ANT的第一触点，和五个第二触点；第二触点中的一个接地，两个分别连接FEM的低频端口LB AUX1和LB AUX2，其中LB AUX2可经外挂的N28滤波器连接到分集接收LNA BANK包括相连的第一低频输入端口组LB1 IN；另外两个触点可以连接其它频段信号的滤波器输入端。片内滤波器122的输入端直接连接LB AUX IN，输出端直接连接LB AUX OUT。本示例中，FEM还可以包括设置成进行逻辑控制的数字逻辑单元ASM RFFE。
本实施方式中，分集接收LNA BANK还可以包括第二单刀多掷开关；第二低频低噪放通路包括第二低频输入端口组LB0 IN、第二低频低噪放LB0LNA、第二数据选择器、第二低频输出端口LB0OUT；
其中，第二单刀多掷开关可以包括一个第一触点和多个第二触点，第一触点连接第二低频低噪放的输入端，多个第二触点分别和第二低频输入端口组中的不同端口相连；第二低频低噪放的输出端经第二数据选择器连接第二低频输出端口，通过第二低频输出端口连接到收发器10。
下面用第二示例说明本实施方式，本示例的射频***中，收发器10分别连接LB PA Mid 21、MHB PA Mid 22、主集接收LNA BANK 23、FEM 242、分集接收LNA BANK 25；本示例中，天线包括第一天线31、第二天线32、第三天线33、第四天线34；射频***中还包括第一合路器41、第二合路器42、第三合路器43、第四合路器44、N28双工器50、第一、第三N28滤波器61、63。其中，LB PA Mid 21、MHB PA Mid 22、主集接收LNA BANK 23、分集接收LNA BANK 25在射频***中的连接关系可以参见第一示例及图3b、图3c、图3d、图3f所示；FEM 242采用图4所示的FEM。第一、第三N28滤波器61、63均为外挂滤波器。FEM 242中包括一个片内的N28滤波器。
与第一示例的区别在于，第二示例不再存在外挂的第二N28滤波器62，第四天线34接收的信号经第四合路器44分出的低频接收信号经路径Path08至FEM 242的LB AUX IN端口，由FEM 242中内的滤波器122完成N28滤波；分集接收LNA BANK 25在第一示例中和第二N28滤波器62连接，在第二示例中改成和FEM 242的LB AUX OUT端口连接；另外，FEM 242改为采用图4所示的FEM，因此比之第一示例，增加了外挂的第三N28滤波器63，FEM 242的LB ANT端口通过第三合路器43从第三天线33接收分集接收低频信号，接收到的低频接收信号通过第三N28滤波器63进行N28滤波后，送至分集接收LNA BANK 25；FEM 242在射频***中的连接关系如图5所示。
第二示例中，第一天线31通过第一合路器41分别连接LB PA Mid 21和MHB PA Mid 22；LB PA Mid 21外接N28双工器50，N28双工器50连接到主集接收LNA BANK 23的第一低频输入端口。第二天线32接收的信号通过第二合路器42分为低频和中高频两路，分别通过第一N28滤波器61和高频滤波器连接主集接收LNA BANK 23的第二低频输入端口LB0 IN1和高频输入端口。第三天线33接收的信号通过第三合路器43分为低频和中高频两路，分别连接FEM 242的低频天线端口LB ANT和中高频天线端口MHB ANT；低频信号从FEM 242输出，经第三N28滤波器63至分集接收LNA BANK 25的第一低频输入端口LB1 IN2。第四天线34接收的信号通过第四合路器44分为低频和中高频两路，分别通过FEM 242中的片内N28滤波器和外挂的高频滤波器连接分集接收LNA BANK 25的第二低频输入端口LB0 IN1和高频输入端口。
下面结合图3b、图3c、图3d、图3f、图4和图5详细描述第二示例的工作原理。
TX(Transmit，发射)链路、PRX链路、PRX MIMO链路同第一示例。
DRX链路：(1)分集接收信号从第三天线33进入，经路径Path05，到第三合路器43；(2)从第三合路器43分出分集接收低频信号，经路径Path06到达FEM 24的LB ANT端口，该端口连接FEM 242中的单刀五掷开关SP5T的单端口触点6；(3)该开关切换到触点4，从而使分集接收低频信号至FEM 242的LB AUX2端口；(4)分集接收低频信号经第三N28滤波器63滤波后，至分集接收LNA BANK 25的LB1 IN2端口，该端口连接分集接收LNA BANK 25中的单刀四掷开关SP4T的触点3；(5)该开关将触点3切换至单端口触点1，从而使滤波后的分集接收低频信号到达分集接收LNA BANK 25中的LB1 LNA通路；(6)滤波后的分集接收低频信号经LB1 LNA放大后，经数据选择器MUX1从分集接收LNA BANK 25的LB1 OUT端口输出；(7)放大后的信号经SDR DRXE端口进入收发器10。
DRX MIMO链路：(1)MIMO分集接收信号从第四天线进入，经路径Path07，到第四合路器44；(2)第四合路器44分出的分集接收低频MIMO信号经路径Path08到达FEM 242；(3)分集接收低频MIMO信号经LB AUX IN端口进入FEM 242，经滤波器122的N28滤波后从LB AUX OUT端口输出FEM 242；(4)滤波后的分集接收低频MIMO信号从LB0 IN1端口进入分集接收LNA BANK 25中，到达单刀三掷开关SP3T#3的触点3；(5)该开关切换到单端口触点1，从而使分集接收低频MIMO信号到达分集接收LNA BANK 25中的LB0 LNA通路；(6)分集接收低频MIMO信号经LB0 LNA放大后，经数据选择器MUX2从分集接收LNA BANK 25的LB0 OUT端口输出；(7)经SDR DRX10端口进入收发器10。
第二示例中仅包含一个滤波组件，该滤波组件设置在FEM 242中，片内滤波器122设置成针对分集接收低频MIMO信号进行N28滤波；滤波组件中的输入端口为FEM242的LB AUX IN端口，输出端口为FEM 242的LB AUX OUT端口。
一种示例性实施例中，滤波组件12可以设置在FEM中，可以包括第一滤波组件和第二滤波组件；第一滤波组件的输入端口可以为FEM的天线端口，输出端口可以为FEM的预定频段的输出端口，片内滤波器连接在FEM的天线端口和预定频段的输出端口之间；第二滤波组件的输入端口为FEM的输入端口，输出端口为FEM的输出端口；片内滤波器连接在FEM的输入端口和输出端口之间。
本实施例的一种实施方式中，接收信号包括DRX低频信号和DRX MIMO低频信号；相应地，预定频段的接收信号包括预定频段的DRX信号和DRX MIMO信号；输入端口121包括FEM的低频天线端口LB ANT和低频输入端口LB AUX IN；输出端口123包括FEM的预定频段的输出端口和低频输出端口LB AUX OUT；
本实施方式中，第一、第二滤波组件中的片内滤波器分别是第一、第二滤波器，第一滤波器连接在LB ANT和预定频段的输出端口之间，设置成对DRX低频信号进行预定频段的滤波；第二滤波器连接在LB AUX IN和LB AUX OUT之间，设置成对DRX MIMO低频信号进行预定频段的滤波。
本实施方式中，接收放大组件13可以设置在第一LNA BANK中，第一LNA BANK包括相连的第一低频输入端口组LB1 IN和第一低频低噪放通路、以及相连的第二低频输入端口组LB0 IN和第二低频低噪放通路；FEM的N28 OUT端口通过第一低频输入端口组中的一个端口连接第一低频低噪放通路的输入端，FEM的LB AUX OUT通过第二低频输入端口组中的一个端口连接第二低频低噪放通路的输入端；第一低频低噪放通路、第二低频低噪放通路分别设置成对预定频段的DRX信号和DRX MIMO信号进行低噪声功率放大后输出给收发器10。
本实施方式中，第一/第二低频输入端口组中，除了连接输出端口123以外的其它端口可以连接其它频段的DRX/DRX MIMO低频信号或悬空。
本实施方式中，FEM还可以包括切换开关，该切换开关包括至少一个第一触点，连接于LB ANT，还包括多个第二触点；第二触点中的一个连接片内滤波器122的输入端。
本实施方式中，切换开关可以为单刀多掷开关。
本实施方式的一个示例中，设置有滤波组件的FEM如图6所示，片内滤波器122为N28滤波器； 切换开关为单刀五掷开关SP5T，该开关包括一个连接于LB ANT的第一触点，和五个第二触点；第二触点中的一个连接第一滤波器1221的输入端，一个接地，一个连接FEM的低频端口LB AUX1；另外两个触点可以连接其它频段信号的滤波器输入端；第一滤波器1221的输出端直接连接FEM的N28 OUT端口。第二滤波器1222的输入端直接连接LB AUX IN，输出端直接连接LB AUX OUT。本示例中，FEM还可以包括设置成进行逻辑控制的数字逻辑单元ASM RFFE。
本实施方式中，分集接收LNA BANK还可以包括第一、第二单刀多掷开关；第一/第二低噪放通路可以包括第一/第二低频低噪放、第一/第二数据选择器、第一/第二低频输出端口；
其中，第一、第二单刀多掷开关可以各自包括一个第一触点和多个第二触点，第一单刀多掷开关的第一触点连接第一低频低噪放的输入端，多个第二触点分别和第一低频输入端口组中的不同端口相连；第一低频低噪放的输出端经第一数据选择器连接第一低频输出端口，通过第一低频输出端口连接到收发器10。第二单刀多掷开关的第一触点连接第二低频低噪放的输入端，多个第二触点分别和第二低频输入端口组中的不同端口相连；第二低频低噪放的输出端经第二数据选择器连接第二低频输出端口，通过第二低频输出端口连接到收发器10。
下面用第三示例说明本实施方式，本示例的射频***中，收发器10分别连接LB PA Mid 21、MHB PA Mid 22、主集接收LNA BANK 23、FEM 243、分集接收LNA BANK 25；本示例中，天线包括第一天线31、第二天线32、第三天线33、第四天线34；射频***中还包括第一合路器41、第二合路器42、第三合路器43、第四合路器44、N28双工器50、第一N28滤波器61。其中，LB PA Mid 21、MHB PA Mid 22、主集接收LNA BANK 23、分集接收LNA BANK 25各自在射频***中的连接关系可以参见第一示例及图3b、图3c、图3d、图3f所示。
与第二示例的区别在于，不存在外挂的第三N28滤波器63，FEM 243直接采用内置的片内N28滤波器对LB ANT端口输入的低频接收信号进行N28滤波，并输出到分集接收LNA BANK 25；另外，第三示例中的FEM 243改为采用图6所示的FEM，包含第一滤波器1221和第二滤波器1222，两者皆是片内的N28滤波器，分别设置成针对分集接收低频信号、分集接收低频MIMO信号进行N28滤波；FEM 243在射频***中的连接关系如图7所示。
第三示例中，第一天线31通过第一合路器41分别连接LB PA Mid 21和MHB PA Mid 22；LB PA Mid 21外接N28双工器50，N28双工器50连接到主集接收LNA BANK 23的第一低频输入端口。第二天线32接收的信号通过第二合路器42分为低频和中高频两路，分别通过第一N28滤波器61和高频滤波器连接主集接收LNA BANK 23的第二低频输入端口和高频输入端口。第三天线33接收的信号通过第三合路器43分为低频和中高频两路，分别连接FEM 243的低频天线端口LB ANT和中高频天线端口MHB ANT，FEM 243的LB ANT端口连接FEM 243中的第一滤波器的输入端，该第一滤波器的输出端所连接的FEM 243的端口N28A OUT连接到分集接收LNA BANK 25的第一低频输入端口LB1 IN2。第四天线34接收的信号通过第四合路器44分为低频和中高频两路，分别通过FEM 243中的第二滤波器和外挂的高频滤波器连接分集接收LNA BANK 25的第二低频输入端口LB0 IN1和高频输入端口。
第三示例中，TX(Transmit，发射)链路、PRX链路、DRX链路、PRX MIMO链路同第一示例；DRX MIMO链路同第二示例。
第三示例中包含两个滤波组件，均设置在FEM 243中，FEM 243中的第一滤波器1221所属的滤波组件中输入端口为FEM241的低频天线端口LB ANT，或包括FEM241的低频天线端口LB ANT和单刀五掷开关SP5T；输出端口为FEM 241的N28A OUT端口。第二滤波器1222所属的滤波组件中的输入端口为FEM242的LB AUX IN端口，输出端口为FEM 242的LB AUX OUT端口。
一种示例性实施例中，滤波组件12设置在PA Mid中，输入端口121是PA Mid的输入端口；输出端口123是PA Mid中的输出端口；片内滤波器122连接在输入端口和输出端口之间。
本实施例的一种实施方式中，PA Mid可以是LB PA Mid，接收信号包括PRX MIMO低频信号，预定频段的接收信号包括预定频段的PRX MIMO信号。
本实施方式中，输入端口121可以包括LB PA Mid的低频输入端口LB AUX IN；输出端口123包括LB PA Mid中的低频输出端口LB AUX OUT。
本实施方式中，接收放大组件13可以设置在第二LNA BANK中，本文中又将第二LNA BANK称为主集接收LNA BANK，这里所说的主集接收包括PRX和PRX MIMO。第二LNA BANK包括相连的低频输入端口组LB0 IN和低频低噪放通路；LB PA Mid的LB AUX OUT通过低频输入端口组中的一个端口连接低频低噪放通路的输入端；低频低噪放通路设置成对N28PRX MIMO信号进行低噪声功率放大后输出给收发器10。
本实施方式中，低频输入端口组中，除了连接输出端口123以外的其它端口可以连接其它频段的PRX MIMO低频信号或悬空。
本实施方式的一个示例中，内置有滤波组件的LB PA Mid如图8所示，片内滤波器122为N28滤波器，输入端直接连接LB AUX IN，输出端直接连接LB AUX OUT。
本实施方式中，主集接收LNA BANK还可以包括单刀多掷开关；低噪放通路可以包括低频低噪放、数据选择器、低频输出端口；
其中，单刀多掷开关可以包括一个第一触点和多个第二触点，第一触点连接低频低噪放的输入端，多个第二触点分别和低频输入端口组中的不同端口相连；低频低噪放的输出端经数据选择器连接低频输出端口，通过低频输出端口连接到收发器10。
下面用第四示例说明本实施方式，本示例的射频***中，收发器10分别连接LB PA Mid 211、MHB PA Mid 22、主集接收LNA BANK 23、FEM 24、分集接收LNA BANK 25；本示例中，天线包括第一天线31、第二天线32、第三天线33、第四天线34；射频***中还包括第一合路器41、第二合路器42、第三合路器43、第四合路器44、N28双工器50、第二、第三N28滤波器62、63。其中，MHB PA Mid 22、主集接收LNA BANK 23、分集接收LNA BANK 25各自在射频***中的连接关系可以参见第一示例及图3c、图3d、图3f所示。
与第一示例的区别在于，第四示例的FEM 24内没有片内的N28滤波器，存在外挂的第二、第三N28滤波器62、63；另外，第四示例的LB PA Mid 211改为采用图8所示的LB PA Mid，包含片内的N28滤波器，而取消了外挂的N28滤波器61；LB PA Mid 211、FEM 24在射频***中的连接关系分别如图9a和图9b所示。
第四示例中，第一天线31通过第一合路器41分别连接LB PA Mid 21和MHB PA Mid 22；LB PA Mid 21外接N28双工器50，N28双工器50连接到主集接收LNA BANK 23的第一低频输入端口LB1 IN2。第二天线32接收的信号通过第二合路器42分为低频和中高频两路，分别通过LB PA Mid 21中内置的N28滤波器和外挂的高频滤波器，连接主集接收LNA BANK 23的第二低频输入端口LB0 IN1和高频输入端口。第三天线33通过第三合路器43分为低频和中高频两路，分别连接FEM 24的低频天线端口LB ANT和中高频天线端口MHB ANT，其中低频信号从FEM 24的LB AUX2端口输出，经外挂的N28滤波器63至分集接收LNA BANK 23的第一低频输入端口LB1 IN2。第四天线34通过第四合路器44分为低频和中高频两路，分别通过第二N28滤波器62和高频滤波器连接分集接收LNA BANK 25的第二低频输入端口LB0 IN1和高频输入端口。
下面结合图3c、图3d、图3f和图9a和图9b详细描述第四示例的工作原理。
TX(Transmit，发射)链路、PRX链路、DRX MIMO链路同第一示例；DRX链路同第二示例。
PRX MIMO链路：(1)MIMO主集接收信号从第二天线进入，经路径Path03，至第二合路器42；(2)第二合路器42分出的主集接收低频MIMO信号经Path04，至LB PA Mid 211；(3)主集接收低频MIMO信号从LB AUX IN端口进入LB PA Mid 211，经片内的N28滤波器进行N28滤波，从LB AUX OUT端口输出LB PA Mid 211；(4)滤波后的主集接收低频MIMO信号经LB0 IN1端口进入主集接收LNA BANK 23中，到达单刀三掷开关SP3T#3的触点3；(5)该开关切换到单端口触点1，从而使滤波后的主集接收低频MIMO信号到达主集接收LNA BANK 23中的LB0LNA通路；(6)滤波后的主集接收低频MIMO信号经LB0LNA放大后，经数据选择器MUX2从主集接收LNA BANK 23的LB0 OUT端口输出；(7)经SDR PRX10端口进入收发器10。
第四示例中包含一个滤波组件，设置在LB PA Mid 211中，滤波组件中的滤波器设置成对主集接收低频MIMO信号进行N28滤波；滤波组件中的输入端口为LB PA Mid 211的LB AUX IN端口，输 出端口为LB PA Mid 211的LB AUX OUT端口。
第四示例中，FEM 24可以改为采用第一示例、第二示例、第三示例中任一个示例里的FEM代替，相应的，当采用上述任一示例中的FEM时，DRX链路和/或DRX MIMO链路使用相应示例中的链路。第五示例是在第四示例的基础上，将FEM替换成第三示例中的FEM；第五示例中，滤波组件有多个，包括设置在如图6所示的FEM中的两个滤波组件，和设置在如图8所示的LB PA Mid中的一个滤波组件。
第五示例的射频***如图10所示，收发器10分别连接LB PA Mid 211、MHB PA Mid 22、主集接收LNA BANK 23(图10中的LNA BANK#1)、FEM 243、分集接收LNA BANK 25(图10中的LNA BANK#2)；本示例中，天线包括第一天线31、第二天线32、第三天线33、天线31；射频***中还包括第一合路器41、第二合路器42、第三合路器43、第四合路器44、N28双工器50。其中，MHB PA Mid 22、主集接收LNA BANK 23、分集接收LNA BANK 25各自在射频***中的连接关系可以参见第一示例及图3c、图3d、图3f所示。
与第四示例不同之处在于，第五示例中不存在外挂的第二、第三N28滤波器，这两个滤波器改为片内N28滤波器，全部内置到FEM 243中。LB PA Mid 211采用图8所示的LB PA Mid、FEM 243采用图6所示的FEM。
第五示例中，第一天线31通过第一合路器41分别连接LB PA Mid 211和MHB PA Mid 22；LB PA Mid 21外接N28双工器50，N28双工器50连接到主集接收LNA BANK 23的第一低频输入端口LB1IN2。第二天线32接收的信号通过第二合路器42分为低频和中高频两路，分别通过LB PA Mid 211中的N28滤波器和外挂的高频滤波器连接主集接收LNA BANK 23的第二低频输入端口LB0 IN1和高频输入端口。第三天线33接收的信号通过第三合路器43分为低频和中高频两路，分别连接FEM 243的低频天线端口LB ANT、和中高频天线端口MHB ANT；FEM 243的LB ANT端口连接FEM 243中的第一N28滤波器的输入端，该第一N28滤波器的输出端所连接的FEM 243的N28A OUT连接到分集接收LNA BANK 25的第一低频输入端口LB1 IN2。第四天线34接收的信号通过第四合路器44分为低频和中高频两路，分别通过FEM 243中的第二N28滤波器和外挂的高频滤波器，连接分集接收LNA BANK 25的第二低频输入端口LB0 IN1和高频输入端口。
下面详细描述第五示例的工作原理。
TX(Transmit，发射)链路、PRX链路、DRX链路同第一示例；DRX MIMO链路同第二示例；PRX MIMO链路同第四示例。
本申请实施例还提供了一种通信设备，包括如上任一个实施例提供的接收器件或射频***。该通信设备通过将滤波器内置在滤波组件中，不会增加主板面积和成本，且接收性能好。当包括多路接收信号，且内置的片内滤波器包括N28滤波器的情况下，该通信设备可以支持N28MIMO。
本申请描述了多个实施例，但是该描述是示例性的，而不是限制性的，并且对于本领域的普通技术人员来说显而易见的是，在本申请所描述的实施例包含的范围内可以有更多的实施例和实现方案。尽管在附图中示出了许多可能的特征组合，并在详述中进行了讨论，但是所公开的特征的许多其它组合方式也是可能的。除非特意加以限制的情况以外，任何实施例的任何特征或元件可以与任何其它实施例中的任何其他特征或元件结合使用，或可以替代任何其它实施例中的任何其他特征或元件。
本申请包括并设想了与本领域普通技术人员已知的特征和元件的组合。本申请已经公开的实施例、特征和元件也可以与任何常规特征或元件组合，以形成由权利要求限定的独特的发明方案。任何实施例的任何特征或元件也可以与来自其它发明方案的特征或元件组合，以形成另一个由权利要求限定的独特的发明方案。因此，应当理解，在本申请中示出和/或讨论的任何特征可以单独地或以任何适当的组合来实现。因此，除了根据所附权利要求及其等同替换所做的限制以外，实施例不受其它限制。此外，可以在所附权利要求的保护范围内进行多种修改和改变。
此外，在描述具有代表性的实施例时，说明书可能已经将方法和/或过程呈现为特定的步骤序列。然而，在该方法或过程不依赖于本文所述步骤的特定顺序的程度上，该方法或过程不应限于所述的特定顺序的步骤。如本领域普通技术人员将理解的，其它的步骤顺序也是可能的。因此，说明书中阐述的步骤的特定顺序不应被解释为对权利要求的限制。此外，针对该方法和/或过程的权利要求不应限于 按照所写顺序执行它们的步骤，本领域技术人员可以容易地理解，这些顺序可以变化，并且仍然保持在本申请实施例的精神和范围内。

Claims (15)

  1. 一种接收器件，其特征在于，应用于接收通路，包括：滤波组件、接收放大组件；所述滤波组件包括：
    输入端口，设置成接收来自天线的接收信号；
    片内滤波器，设置成对接收的所述接收信号进行滤波，得到预定频段的接收信号；
    输出端口，设置成将所述预定频段的接收信号发送给所述接收放大组件；
    所述接收放大组件设置成对所述预定频段的接收信号进行功率放大后输出。
  2. 如权利要求1所述的接收器件，其中，所述预定频段包括以下一种或多种：N28、B28、N28A。
  3. 如权利要求1所述的接收器件，其中：所述滤波组件设置在射频前端模组FEM或功率放大模组PA Mid中。
  4. 如权利要求1所述的接收器件，其中：
    所述滤波组件设置在FEM中，所述输入端口为所述FEM的天线端口，所述输出端口为所述FEM的所述预定频段的输出端口；所述片内滤波器连接在所述天线端口和所述预定频段的输出端口之间。
  5. 如权利要求1所述的接收器件，其中：
    所述滤波组件设置在FEM中；所述输入端口为所述FEM的输入端口；所述输出端口为所述FEM的输出端口；所述片内滤波器连接在所述输入端口和所述输出端口之间。
  6. 如权利要求1所述的接收器件，其中：
    所述接收通路为多个，所述滤波组件设置在FEM中，包括第一滤波组件和第二滤波组件；所述第一滤波组件中的输入端口为FEM的天线端口，输出端口为FEM的预定频段的输出端口，片内滤波器连接在所述FEM的所述天线端口和所述预定频段的输出端口之间；
    所述第二滤波组件中的输入端口为FEM的输入端口，所述输出端口为FEM的输出端口；所述片内滤波器连接在所述FEM的所述输入端口和所述输出端口之间。
  7. 如权利要求1、4-6中任一项所述的接收器件，其中：
    所述滤波组件设置在功率放大模组PA Mid中；所述输入端口为PA Mid的输入端口；所述输出端口为PA Mid中的输出端口；所述片内滤波器连接在所述PA Mid的输入端口和所述输出端口之间。
  8. 如权利要求1所述的接收器件，其中，所述接收通路为多个，分别对应于主集接收信号和分集接收信号；所述滤波组件为多个，分别对应于不同的接收通路。
  9. 如权利要求8所述的接收器件，其中：所述接收通路为多个，分别对应于主集接收信号、分集接收信号、多进多出主集接收信号、多进多出分集接收信号；所述滤波组件为多个，分别对应于不同的接收通路。
  10. 如权利要求8或9所述的接收器件，其中：所述接收放大组件为多个，分别对应不同的接收通路。
  11. 如权利要求1所述的接收器件，其中：所述接收放大组件设置在低噪放组LNA BANK中；
    所述接收放大组件包括：相连的输入端口组和低噪放通路；所述滤波组件的输出端口通过所述输入端口组中的一个端口连接所述低噪放通路的输入端；所述低噪放通路设置成对所述预定频段的接收信号进行低噪声功率放大后输出。
  12. 如权利要求1所述的接收器件，其中，所述滤波组件包括多个不同频段的片内滤波器和多个所述输出端口；所述多个输出端口分别连接所述多个不同频段的片内滤波器的输出端；
    所述接收器件还包括：切换开关；所述切换开关包括至少一个第一触点和多个第二触点；所述第一触点连接于所述输入端口，所述多个第二触点分别连接所述多个不同频段的片内滤波器的输入端。
  13. 一种射频***，包括：天线、收发器、如权利要求1-12中任一项所述的接收器件。
  14. 如权利要求13所述的射频***，其中，接收通路为多个的情况下，存在以下一种或多种情况：
    所述接收器件为多个，分别对应不同的接收通路；
    所述接收器件中的滤波组件和/或接收放大组件为多个，分别对应不同的接收通路。
  15. 一种通信设备，包括如权利要求13或14所述的射频***。
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