CN1855747A - Cross-core calibration in a multi-radio system - Google Patents
Cross-core calibration in a multi-radio system Download PDFInfo
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- CN1855747A CN1855747A CNA2006100737314A CN200610073731A CN1855747A CN 1855747 A CN1855747 A CN 1855747A CN A2006100737314 A CNA2006100737314 A CN A2006100737314A CN 200610073731 A CN200610073731 A CN 200610073731A CN 1855747 A CN1855747 A CN 1855747A
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Abstract
Local oscillation circuitry for use in an RF transceiver Integrated Circuit (IC) includes local oscillation generation circuitry operable to produce a local oscillation and local oscillation distribution circuitry. The local oscillation distribution circuitry includes a splitting circuit, a first distribution portion, and a second distribution portion. The splitting circuit receives the local oscillation and produces multiple copies of the local oscillation. The first distribution portion produces a first local oscillation corresponding to a first RF band and a second local oscillation corresponding to a second RF band based and to provide the first local oscillation and the second local oscillation to a first RF transceiver group. The second distribution portion produces a first local oscillation and a second local oscillation and provides the first local oscillation and the second local oscillation to the second RF transceiver group.
Description
Technical field
The present invention relates to telecommunication circuit, more particularly, relate to the radio frequency integrated circuit of using in a kind of Wireless Telecom Equipment.
Background technology
We know that communication system is supported the wireless and wire communication between wireless and/or wire communication facility.This communication system comprises domestic and/or international cell phone system, internet, point-to-point indoor wireless networks etc.The communication system of each type all makes up and operation according to one or more communication standards.For example, wireless communication system can according to but be not limited to following one or more standard and move: IEEE802.11 (WLAN (wireless local area network), be called for short " WLAN "), bluetooth (wireless personal local area network), advanced mobile phone service (AMPS), digital AMPS, global system for mobile communications (GSM), code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), Local Multipoint Distribution System (LMDS), multichannel multipoint distributed serv (MMDS), and/or relevant mutation.
According to the type of wireless communication system, Wireless Telecom Equipment such as cell phone, double-direction radio R-T unit, PDA(Personal Digital Assistant), PC (PC), kneetop computer, home entertainment device etc. communicate with other communication equipments directly or indirectly.For direct communication (being also referred to as point-to-point communication), the Wireless Telecom Equipment that participates in communication is transferred to identical channel (as in a plurality of radio-frequency carriers in the wireless communication system some) with its reflector and receiver, communicates by this channel then.For indirect radio communication, each Wireless Telecom Equipment is directly communicated by letter with related base station (as the cellular service) and/or related access point (as the wireless network in indoor or the building) by the channel that distributed.Finish communicating to connect between Wireless Telecom Equipment, related base station and/or related access point mutually between by system controller, public switch telephone network, internet, and/or some other wide area network direct communication.
Each Wireless Telecom Equipment that participates in radio communication all comprises built-in wireless transceiver (being reflector and receiver) or is connected to related wireless transceiver (as cordless communication network station, RF modulator-demodulator etc. in indoor and/or the building).Known to the insider, reflector comprises data-modulated level (stage), one or more IF level, and power amplifier.The data-modulated level is converted to baseband signal according to specific wireless communication standard with initial data.Described one or more IF level mixes baseband signal to generate the RF signal with one or more local oscillators.Before passing through antenna transmitting RF signal, power amplifier amplifies the RF signal.
Known to the insider, receiver is connected with antenna, and receiver comprises low noise amplifier, one or more intermediater-frequency stage, filtering stage and data and recovers level.Low noise amplifier then amplifies received RF signal by antenna reception of inbound RF signal.RF signal after described one or more intermediater-frequency stage will be amplified mixes the RF conversion of signals is become baseband signal or intermediate frequency (IF) signal mutually with one or more local oscillators.Thereby filtering stage filtered baseband signal or IF signal generate filtered signal to cut down useless out of band signal.Data are recovered level and are recovered initial data according to specific wireless communication standard from filtered signal.
In a lot of wireless communication systems, hope can operate on a plurality of RF bands.For example, IEEE 802.11 has been contained the running on 2.4GHz frequency range and the 5GHz frequency range.This running requires to operate on different RF bands in the adjacent time.Therefore, support the RF transceiver of this running promptly to be transformed into another frequency range from a frequency range.Various viewpoints are thought, make up and support that the transceiver of many RF band operations is tasks of a difficulty.The operation standard of exploitation needs multiple-input, multiple-output (MIMO) operation at present, and in this multiple-input, multiple-output operation, a plurality of receivers or the reflector of RF transceiver operate on common frequency band simultaneously.Therefore, need the structure of many RF bands transceiver be improved.
Summary of the invention
The method of operation that the present invention relates to has sufficient explanation with device in description of drawings, embodiment and claim.
According to an aspect of the present invention, provide a kind of radio frequency (RF) transceiver integrated circuit (IC), comprising:
The one RF transceiver group (group) is operationally served first RF band and second RF band;
The 2nd RF transceiver group is operationally served first RF band and second RF band;
Local oscillator produces circuit, is used to produce local oscillator; With
Local oscillation distribution circuitry is operably connected to local oscillator and produces circuit, a RF transceiver group and the 2nd RF transceiver group, and this local oscillation distribution circuitry comprises:
Cut apart (spliting) circuit, this partitioning circuitry is used for producing a plurality of copies that circuit receives local oscillator and produces this local oscillator from local oscillator;
First distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first RF band and second local oscillator corresponding with second RF band based on described local oscillator, and first local oscillator and second local oscillator are offered a RF transceiver group; With
Second distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first RF band and second local oscillator corresponding with second RF band based on described local oscillator, and first local oscillator and second local oscillator are offered the 2nd RF transceiver group.
Preferably, described local oscillator generation circuit is located substantially on the symmetrical center line of RF transceiver ic.
Preferably, the partitioning circuitry in the described local oscillation distribution circuitry is located substantially on the symmetrical center line of RF transceiver ic.
Preferably, first distribution portion of described local oscillation distribution circuitry and second distribution portion are symmetrical substantially with respect to the symmetrical center line of RF transceiver ic.
Preferably, described first distribution portion and second distribution portion all comprise a plurality of drivers and at least one divider.
Preferably, described RF transceiver ic also comprises:
First baseband part (section), this first baseband part tool receives (Rx) baseband part and first emission (Tx) baseband part first; With
Second baseband part, this second baseband part have the 2nd Rx baseband part and the 2nd Tx baseband part;
Wherein, described first baseband part and second baseband part are symmetrical substantially with respect to the symmetrical center line of RF transceiver ic.
Preferably:
A described RF transceiver group comprises the first RF band reflector, the first RF band receiver, the second RF band reflector and the second RF band receiver; With
Described the 2nd RF transceiver group comprises the first RF band reflector, the first RF band receiver, the second RF band reflector, the second RF band receiver.
Preferably:
The first RF band reflector of first RF band reflector of a described RF transceiver group and the 2nd RF transceiver group is symmetrical substantially with respect to the symmetrical center line of RF transceiver ic;
The second RF band reflector of second RF band reflector of a described RF transceiver group and the 2nd RF transceiver group is symmetrical substantially with respect to the symmetrical center line of RF transceiver ic;
The first RF band receiver of first RF band receiver of a described RF transceiver group and the 2nd RF transceiver group is symmetrical substantially with respect to the symmetrical center line of RF transceiver ic; With
The second RF band receiver of second RF band receiver of a described RF transceiver group and the 2nd RF transceiver group is symmetrical substantially with respect to the symmetrical center line of RF transceiver ic.
Preferably:
From the symmetrical center line of described RF transceiver ic outward, the module position of a described RF transceiver group is in proper order: the second RF band reflector, the first RF band reflector, the second RF band receiver and the first RF band receiver; With
From the symmetrical center line of described RF transceiver ic outward, the module position of described the 2nd RR transceiver group is in proper order: the second RF band reflector, the first RF band reflector, the second RF band receiver and the first RF band receiver.
Preferably:
From the symmetrical center line of described RF transceiver ic outward, the module position of a described RF transceiver group is in proper order: the second RF band reflector, the second RF band receiver, the first RF band reflector and the first RF band receiver; With
From the symmetrical center line of described RF transceiver ic outward, the module position of described the 2nd RR transceiver group is in proper order: the second RF band reflector, the second RF band receiver, the first RF band reflector and the first RF band receiver.
Preferably:
First distribution portion of described local oscillation distribution circuitry is between first baseband part and a RF transceiver group; With
Second distribution portion of described local oscillation distribution circuitry is between second baseband part and the 2nd RF transceiver group.
Preferably:
When a RF transceiver group and/or the 2nd RF transceiver group were served the communication of second RF band, local oscillator was corresponding to second local oscillator; With
When a RF transceiver group and/or the 2nd RF transceiver group were served the communication of first RF band, local oscillator was corresponding to first local oscillator.
According to an aspect of the present invention, local oscillation circuit in a kind of radio frequency (RF) transceiver integrated circuit (IC) is provided, described RF transceiver ic comprises a RF transceiver group and the 2nd RF transceiver group, wherein a RF transceiver group is operationally served first RF band and second RF band, and the 2nd RF transceiver group is operationally served first RF band and second RF band; Described local oscillation circuit comprises:
Local oscillator produces circuit, is used to produce local oscillator; With
Local oscillation distribution circuitry, this local oscillation distribution circuitry are operably connected to local oscillator and produce circuit, a RF transceiver group and the 2nd RF transceiver group, and this local oscillation distribution circuitry comprises:
Partitioning circuitry, this partitioning circuitry are used for producing a plurality of copies that circuit receives local oscillator and produces this local oscillator from local oscillator;
First distribution portion, this first distribution portion is connected in partitioning circuitry, be used for producing first local oscillator corresponding and second local oscillator corresponding, and first local oscillator and second local oscillator are offered a RF transceiver group with second RF band with first RF band based on described local oscillator; With
Second distribution portion, this second distribution portion is connected in partitioning circuitry, be used for producing first local oscillator corresponding and second local oscillator corresponding, and first local oscillator and second local oscillator are offered the 2nd RF transceiver group with second RF band with first RF band based on described local oscillator.
Preferably, described local oscillator generation circuit is located substantially on the symmetrical center line of RF transceiver ic.
Preferably, the partitioning circuitry of described local oscillation distribution circuitry is located substantially on the symmetrical center line of RF transceiver ic.
Preferably, first distribution portion of described local oscillation distribution circuitry and second distribution portion are symmetrical substantially with respect to the symmetrical center line of RF transceiver ic.
Preferably, described first distribution portion and second distribution portion all comprise a plurality of drivers or at least one divider.
Preferably:
From the symmetrical center line of described RF transceiver ic outward, the module position of a described RF transceiver group is in proper order: the second RF band reflector, the first RF band reflector, the second RF band receiver and the first RF band receiver;
From the symmetrical center line of described RF transceiver ic outward, the module position of described the 2nd RR transceiver group is in proper order: the second RF band reflector, the first RF band reflector, the second RF band receiver and the first RF band receiver;
Described first distribution portion operationally offers second vibration second RF band reflector, the second RF band receiver of a described RF transceiver group, first vibration is offered the first RF band reflector, the first frequency range RF receiver of a described RF transceiver group; With
Described second distribution portion operationally offers second vibration second RF band reflector, the second RF band receiver of described the 2nd RF transceiver group, first vibration is offered the first RF band reflector, a RF receiver of described the 2nd RF transceiver group.
Preferably:
From the symmetrical center line of described RF transceiver ic outward, the module position of a described RF transceiver group is in proper order: the second RF band reflector, the second RF band receiver, the first RF band reflector and the first RF band receiver;
From the symmetrical center line of described RF transceiver ic outward, the module position of described the 2nd RR transceiver group is in proper order: the second RF band reflector, the second RF band receiver, the first RF band reflector and the first RF band receiver;
Described first distribution portion operationally offers second vibration second RF band reflector, the second RF band receiver of a described RF transceiver group, first vibration is offered the first RF band reflector, a RF receiver of a described RF transceiver group; With
Described second distribution portion operationally offers second vibration second RF band reflector, the second RF band receiver of described the 2nd RF transceiver group, first vibration is offered the first RF band reflector, a RF receiver of described the 2nd RF transceiver group.
Preferably:
When a RF transceiver group and/or the 2nd RF transceiver group were served the communication of second RF band, local oscillator was corresponding to second local oscillator; With
When a RF transceiver group and/or the 2nd RF transceiver group were served the communication of first RF band, local oscillator was corresponding to first local oscillator.
From following description and accompanying drawing, can obtain various advantages of the present invention, various aspects, character of innovation, and the more deep understanding of embodiment details.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the schematic block diagram according to wireless communication system of the present invention;
Fig. 2 is the schematic block diagram according to Wireless Telecom Equipment of the present invention;
Fig. 3 is the schematic block diagram according to another kind of Wireless Telecom Equipment of the present invention;
Fig. 4 is the schematic block diagram according to radio frequency of the present invention (RF) transceiver integrated circuit (IC);
Fig. 5 be according to an embodiment of the invention, the partial schematic block diagram of RF transceiver ic shown in Figure 4;
Fig. 6 be in accordance with another embodiment of the present invention, the partial schematic block diagram of RF transceiver ic shown in Figure 4;
Fig. 7 is the RF transceiver ic of another embodiment according to the present invention or the partial schematic block diagram of a plurality of RF transceiver ics;
Fig. 8 is the RF transceiver ic of another embodiment according to the present invention or the partial schematic block diagram of a plurality of RF transceiver ics;
Fig. 9 is the schematic block diagram of another RF transceiver ic according to an embodiment of the invention; With
Figure 10 is the partial schematic block diagram of RF transceiver ic or a plurality of RF transceiver ics.
Embodiment
Fig. 1 is the schematic block diagram of communication system 5.Communication system 5 comprises Basic Service Set (BSS) district 7 and 9, self Basic Service Set (IBSS) 11 and network hardware equipment 15.BSS district 7 comprises base station and/or access point 17 and a plurality of Wireless Telecom Equipment 21-23; BSS district 9 comprises base station and/or access point 19 and a plurality of Wireless Telecom Equipment 25-31.IBSS 11 comprises a plurality of Wireless Telecom Equipment 33-37.Wireless Telecom Equipment 21-37 can be laptop computer main frame 21 and 25, personal digital assistant main frame 23 and 29, personal computer main frame 31 and 33, and/or cell phone main frame 27 and 35.
Base station or access point 17 and 19 are connected 39 and 43 via local area network (LAN) and are operably connected to the network hardware 15.The network hardware 15 can be router, switch, bridge, modulator-demodulator, system controller etc., and it connects 41 for communication system 5 provides wide area network.Base station or access point 17,19 all related antenna or antenna arrays are used for communicating by letter with the Wireless Telecom Equipment in the self zone.Typically, Wireless Telecom Equipment is registered to receive the service from communication system 5 to specific base stations or access point 17,19.For the channel direct communication of the direct communication in the IBSS (being point-to-point communication) Wireless Telecom Equipment 33-37 by distributing.
Typically, the base station is used for the system of cell phone system and similar type, and access point is used for indoor or the interior wireless network of building.Regardless of the type of communication system, each Wireless Telecom Equipment all comprises built-in wireless transceiver and/or is connected to wireless transceiver to be easy to carrying out direct and/or indirect radio communication in communication system 5.
Fig. 2 is the schematic block diagram of Wireless Telecom Equipment, and this Wireless Telecom Equipment comprises main process equipment 18-32 and wireless transmitter 60.For cell phone system, wireless transmitter 60 is built-in assemblies.For personal digital assistant main frame, main frame on knee and/or personal computer main frame, wireless transmitter 60 can be built-in, also can be the assembly that externally connects.
As shown in the figure, main process equipment 18-32 comprises at least one processing module 50, memory 52, wave point 54, input interface 58 and output interface 56.Processing module 50 and memory 52 are carried out the corresponding instruction of being carried out by main process equipment usually.For example, for the cell phone main process equipment, processing module 50 is carried out the corresponding communication function according to specific cellular telephony standard.
Digit receiver processing module 64 and 76 combinations of digit emitter processing module are stored in the operational order in the memory 75, combine digital receiver function and digit emitter function respectively.Described digit receiver function includes but not limited to: digital intermediate frequency-baseband-converted, demodulation, a group of stars are separated mapping, decoding, and/or descrambling (descrambling).The digit emitter function includes but not limited to: scrambling (scrambling), coding, group of stars mapping, modulation, and/or digital baseband-IF conversion.Digit receiver processing module 64 and digit emitter processing module 76 can be used treatment facility, independently treatment facility or the realization of sharing of a plurality of treatment facility.Described treatment facility can be microprocessor, microcontroller, digital signal processor, microcomputer, CPU, field programmable gate array, programmable logic device, state machine, logical circuit, analog circuit, digital circuit, and/or any equipment based on the operational order processing signals.Memory 75 can be single storage device or a plurality of storage device.Described storage device can be read-only memory, random asccess memory, volatile memory, permanent memory, static memory, dynamic memory, flash memory, and/or the device of any storing digital information.Be noted that, when processing module 64 and/or 76 is carried out its one or more function by state machine, analog circuit, digital circuit and/or logical circuit, the memory of storing the corresponding operating instruction is embedded in and comprises state machine, analog circuit, digital circuit, and/or in the circuit of logical circuit.
In operation, wireless transmitter 60 receives outbound data 94 by host interface 62 from main process equipment.Host interface 62 is given digit emitter processing module 76 with outbound data 94 routes.Digit emitter processing module 76 is handled outbound data 94 to produce the data 96 of digital transmission formats according to specific wireless communication standard (for example, IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.15, bluetooth etc.).The data 96 of digital transmission formats can be digital baseband signal or the low IF signal of numeral, and wherein, low IF signal frequency range is 0 to several MHz.
Digital-analog convertor 78 converts the data 96 of digital transmission formats to analog domain (domain) from numeric field (domain).Filtering/gain module 80 before analog signal is offered up-conversion module 82, filtered analog signals and/or adjust the gain of analog signal.The reflector local oscillator that up-conversion module 82 provides based on local oscillator module 74 is directly changed into the RF signal with analog baseband signal or low IF signal.Power amplifier 84 amplification RF signals are to produce departures RF signal 98.The antenna 86 RF signal 98 that will set off is transmitted to target device such as base station, access point and/or another Wireless Telecom Equipment.
Analogue-to-digital converters 66 convert filtered inbound low IF signal (or baseband signal) to numeric field to produce the data 90 of digital received form from analog domain.The particular wireless communication standards that digit receiver processing module 64 is carried out according to wireless transmitter 60 with data 90 decodings, the descrambling of digital received form, separate mapping and/or demodulation to fetch inbound data 92.Host interface 62 offers main process equipment 18-32 by wave point 54 with the inbound data of fetching 92.
Fig. 3 is the schematic block diagram of Wireless Telecom Equipment, and this Wireless Telecom Equipment comprises main process equipment 18-32 and related wireless transmitter 60.For the cell phone main frame, wireless transmitter 60 is built-in assemblies.For personal digital assistant main frame, main frame on knee and/or personal computer main frame, wireless transmitter 60 can be built-in, also can be the assembly that externally connects.
As shown in the figure, main process equipment 18-32 comprises processing module 50, memory 52, wave point 54, input interface 58 and output interface 56.Processing module 50 and memory 52 are carried out the corresponding instruction of being carried out by main process equipment usually.For example, for the cell phone main process equipment, processing module 50 is carried out the corresponding communication function according to specific cellular telephony standard.
Wireless transmitter 60 comprises host interface 62, baseband processing module 100, memory 65, a plurality of radio frequency (RF) reflector 106-110, emission/reception (T/R) module 114, a plurality of antenna 81-85, a plurality of RF receiver 118-120, channel width adjustment module 87 and local oscillator module 74.Baseband processing module 100 combinations are stored in the operational order in the memory 65, combine digital receiver function and digit emitter function respectively.Described digit receiver function includes but not limited to: digital intermediate frequency-baseband-converted, demodulation, a group of stars are separated mapping, decoding, and release of an interleave, fast fourier transform, Cyclic Prefix remove, space-time is decoded and/or descrambling.The digit emitter function includes but not limited to: scrambling, coding, staggered, group of stars mapping, modulation, inverse fast fourier transform, Cyclic Prefix interpolation, space-time code and digital baseband-IF conversion.Baseband processing module 100 can be realized with one or more treatment facilities.Described treatment facility can be microprocessor, microcontroller, digital signal processor, microcomputer, CPU, field programmable gate array, programmable logic device, state machine, logical circuit, analog circuit, digital circuit, and/or any equipment based on operational order processing signals (digital signal and/or analog signal).Memory 65 can be single storage device or a plurality of storage device.Described storage device can be read-only memory, random asccess memory, volatile memory, permanent memory, static memory, dynamic memory, flash memory, and/or the device of any storing digital information.Be noted that, when baseband processing module 100 is carried out its one or more function by state machine, analog circuit, digital circuit and/or logical circuit, the memory of storing the corresponding operating instruction is embedded in and comprises state machine, analog circuit, digital circuit, and/or in the circuit of logical circuit.
In operation, wireless transmitter 60 receives outbound data 94 by host interface 62 from main process equipment.Baseband processing module 100 receives outbound data 94 and produces one or more departures symbol code streams 104 based on mode select signal 102.Mode select signal 102 indicates a kind of certain operational modes, and this operator scheme meets one or more prescribed models of various IEEE 802.11 standards.For example, mode select signal 102 indicate frequency range be 2.4GHz, channel width be 20 or 22MHz, maximum data rate be 54 MBPSs (Mbit/s).Under this total classification, mode select signal further indicates specific data rate from 1Mbit/s to 54Mbit/s.In addition, mode select signal can indicate specific modulation type, and described modulation type includes but not limited to: Barker code (Barker Coder) modulation, BPSK, QPSK, CCK, 16QAM and/or 64QAM.Mode select signal 102 also comprises on encoding rate, each subcarrier coded-bit (NCBPS) in the number of coded-bit (NBPSC), each OFDM symbol and/or the data bit number (NDBPS) in each OFDM symbol.Mode select signal 102 also indicates information specific information for corresponding pattern, and channel number and corresponding centre frequency are provided.The number of antennas that mode select signal 102 also indicates the power spectrum density mask value and will enable for MIMO communication.
Baseband processing module 100 generates one or more departures symbol code streams 104 based on mode select signal 102 usefulness outbound data 94.For example, if mode select signal 102 indicates the current use individual antenna of selected AD HOC, baseband processing module 100 just generates single departures symbol code stream 104.As selection, if mode select signal 102 shows 2,3 or 4 antennas of the current use of selected AD HOC, baseband processing module 100 just generates 2,3 or 4 departures symbol code streams with outbound data 94.
The number of departures (symbol) code stream 104 that produces based on baseband processing module 100, the RF transceiver 106-110 that the enables corresponding number symbol code stream 104 that will set off converts the RF signal 112 that sets off to.Usually, each reflector 106-110 comprises digital filter and makes progress the logical filter of sampling module, numeral-mode switch module, analog filter block, frequency up-converted module, power amplifier and radio band filter.The RF reflector 106-110 RF signal 112 that will set off offers transmit/receive module 114, and the transmit/receive module 114 RF signal that will set off offers corresponding antenna 81-85.
When wireless transmitter 60 was in receiving mode, transmit/receive module 114 received one or more inbound RF signals 116 and should offer one or more RF receiver 118-122 by inbound RF signal 116 by antenna 81-85.The setting that RF receiver 118-122 provides based on channel width adjustment module 87 converts inbound RF signal 116 to the inbound symbol code stream 124 of corresponding number.The number of inbound symbol code stream 124 is corresponding to the received AD HOC of data.Baseband processing module 100 converts inbound symbol code stream 124 to inbound data 92.Then, inbound data 92 is offered main process equipment 18-32 by host interface 62.
Those skilled in the art should know, and Wireless Telecom Equipment shown in Figure 3 can be realized with one or more integrated circuits.For example, main process equipment can realize on an integrated circuit that baseband processing module 100 and memory 65 can realize that other assemblies of wireless transmitter 60 can be realized with another integrated circuit except antenna 81-85 on the 3rd integrated circuit.As an alternative embodiment, wireless transmitter 60 can be realized on single integrated circuit.As another embodiment, the processing module 50 of main process equipment and baseband processing module 100 can be the public treatment facilities of realizing on single integrated circuit.In addition, memory 52 and memory 65 can realize on single integrated circuit, and/or realize on the same integrated circuit as the public processing module of processing module 50 and baseband processing module 100.
Fig. 4 is the schematic block diagram according to RF of the present invention (radio frequency) transceiver ic (integrated circuit).RF transceiver ic 300 comprises that the first transceiver group (group) 302, the second transceiver group 304, first baseband part (section) 352, second baseband part 354, local oscillator produce circuit 307 and local oscillation distribution circuitry 306.Further part can describe other assemblies of RF transceiver ic 300.
According to a first aspect of the invention, symmetrical center line 350, the two RF transceiver groups 304 and the RF transceiver group 302 with respect to RF transceiver ic 300 is symmetrical substantially.The reader should know, and the symmetrical center line 350 of RF transceiver ic 300 is not to be formed by RF transceiver ic 300, but relevant with the layout of the assembly of RF transceiver ic 300.In addition, what the symmetrical center line 350 of RF transceiver ic 300 related to is basic symmetric relation, rather than the absolute symmetry of assembly relation.Therefore, though a RF transceiver group 302 and the 2nd RF transceiver group 304 are symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300, this symmetry only is symmetrical substantially, is not absolute or accurate symmetry.In addition, the symmetrical center line 350 of RF transceiver ic 300 is relevant with the assembly symmetric relation of RF transceiver ic 300, and does not need to be positioned on the center of RF transceiver ic 300.
As shown in Figure 4, the symmetry and the spatial relationship that obviously have other between the functional module of RF transceiver ic 300.For example, local oscillator generation circuit 307 is located substantially on along on the symmetrical center line 350 of RF transceiver ic 300.Local oscillator produces the position at circuit 307 places and the structure of LO (local oscillator) distributor circuit 306, is beneficial to local oscillation signal as one man is distributed to a RF transceiver group 302 and the 2nd RF transceiver group 304.The one RF transceiver group 302 and 304 pairs of RF signals of the 2nd RF transceiver group carry out time and phase alignment, and when RF transceiver ic 300 was supported multiple-input, multiple-output (MIMO) communication, this time and phase alignment were very important.Therefore, LO distributor circuit 306 is supported the distribution of the local oscillator of precise phase calibration with respect to this structure of center line symmetry of RF transceiver ic 300.
Other assemblies of RF transceiver ic 300 comprise phase-locked loop (PLL) 312, PLL buffer circuit 308, voltage controlled oscillator (VCO)/automatic tuning circuit 310, VCO buffer circuit 311 and crystal-oscillator circuit 314.VCO/ automatic tuning circuit 310 and crystal-oscillator circuit 314 are in conjunction with the input of PLL 312 with generation PLL buffer circuit 308 and VCO buffer circuit 312.VCO buffer circuit 311 provides input for LO produces circuit, and the PLL buffer circuit provides input for PLL 312.Because producing the structure and the operation principle of the circuit of local oscillator is known technology, not within teachings of the present invention, does not do too much elaboration at this.
Fig. 5 is the partial schematic block diagram of the RF transceiver ic of Fig. 4 according to an embodiment of the invention.Among the local figure shown in Figure 5, a RF transceiver group 302 comprises the first RF band reflector 506, the first RF band receiver 502, the second RF band reflector 508 and the second RF band receiver 504.Equally, the 2nd RF transceiver group 304 comprises the first RF band reflector 512, the first RF band receiver 516, the second RF band reflector 510 and the second RF band receiver 514.According to specific embodiment shown in Figure 5, second RF band is the 5GHz frequency range, and first RF band is the 2.4GHz frequency range.The reader should know, and appeals in the industry that now wireless lan (wlan) RF transceiver can support 5GHz and 2.4GHz frequency range.Therefore, RF transceiver ic 300 of the present invention is supported communicating by letter on each frequency range by using on each frequency range corresponding reflector with receiver.
As shown in Figure 5, the first RF band reflector 512 of the first RF band reflector 506 of the first transceiver group 302 and the second transceiver group 304 is symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.In addition, the second RF band reflector 510 of the second RF band reflector 508 of the first transceiver group 302 and the second transceiver group 304 is symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.Again, the first RF band receiver 516 of the first RF band receiver 502 of the first transceiver group 302 and the second transceiver group 304 is symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.At last, the second RF band receiver 514 of the second RF band receiver 504 of the first transceiver group 302 and the second transceiver group 304 is symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.
In the structure shown in Figure 5, from the symmetrical center line 350 of RF transceiver ic 300 outward, the module position of a RF transceiver group 302 is in proper order: the second RF band reflector 508, the first RF band reflector 506, the second RF band receiver 504 and the first RF band receiver 502.Equally, from the symmetrical center line 350 of RF transceiver ic 300 outward, the module position of the 2nd RR transceiver group 304 is in proper order: the second RF band reflector 510, the first RF band reflector 512, the second RF band receiver 514 and the first RF band receiver 516.Under this structure, the emitter/receiver on the common frequency band is not to adjoining mutually.Like this, across certain space, this has just reduced Tx/Rx signal degree of coupling from the reflector to the receiver (coupling) on common frequency band between these components.But, with follow-up structure among the Fig. 6 that introduces to be compared, this structure causes the local oscillator distribution to become complicated a little.
Fig. 5 has shown that also crystal oscillator 314, VCO/ automatic tuning circuit 310, VCO buffer circuit 311, PLL 312, PLL buffer circuit 308, local oscillator produce circuit 307 and local oscillation distribution circuitry 306.According to a further aspect in the invention, local oscillator produces circuit 307 and can produce local oscillator at its output.In addition, local oscillation distribution circuitry 306 is operably connected to local oscillator and produces circuit 307, a RF transceiver group 302, the 2nd RF transceiver group 304.Local oscillation distribution circuitry 306 comprises partitioning circuitry (splitting circuit) 550.Partitioning circuitry 550 can produce a plurality of copies that circuit 307 receives local oscillator and produces this local oscillator from local oscillator.Especially, partitioning circuitry 550 comprises driver 518,528 and 538.Local oscillator produces the input of the local oscillator of circuit 307 generations as driver 530.In addition, driver 518 and 528 all duplicates the local oscillator that driver 530 receives.As shown in the figure, partitioning circuitry 550 and local oscillator generation circuit 307 is positioned on the symmetrical center line 350 of RF transceiver ic 300 substantially.
Local oscillation distribution circuitry 306 also comprises first distribution portion 552 and second distribution portion 554.First distribution portion 552 is connected to partitioning circuitry 550, can produce first local oscillator corresponding based on local oscillator with first RF band, can produce second local oscillator corresponding based on local oscillator, this first local oscillator and second local oscillator can be offered a RF transceiver group 302 with second RF band.Equally, second distribution portion 554 is connected to partitioning circuitry 550, can produce first local oscillator corresponding with first RF band based on local oscillator, can produce second local oscillator corresponding with second RF band based on local oscillator.In addition, second distribution portion 554 can offer the 2nd RF transceiver group 304 with this first local oscillator and second local oscillator.With local oscillator produce circuit 307, partitioning circuitry 550 places on the symmetrical center line 350 of RF transceiver ic 300 substantially, and construct partitioning circuitry 550 symmetrically with respect to the symmetrical center line 350 of RF transceiver ic 300, when making a plurality of copies of local oscillator be received by first distribution portion 552 and second distribution portion 554, phase place is mated.
As shown in the figure, the assembly of the assembly of first distribution portion 552 and second distribution portion 554 comprises driver and divided by 2 elements (divide-by-two elements).Particularly, first distribution portion 552 comprises divided by 2 elements 520 and driver 522,524 and 526.In addition, second distribution portion 554 comprises divided by 2 elements 530 and driver 532,534 and 536.As shown in the figure, the assembly of first distribution portion 552 and second distribution portion 554 is symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.Because the assembly of the assembly of a RF transceiver group 302 and the 2nd RF transceiver group 304 is also with respect to the symmetrical center line 350 of RF transceiver ic 300 symmetry substantially, so distribute to first local oscillator of each assembly of RF transceiver group 302 and 304 and second local oscillator in time, all calibrate on the phase place.
Fig. 6 is the partial schematic block diagram of RF transceiver ic according to another embodiment of the invention, shown in Figure 4.Among the embodiment of Fig. 6, the position of corresponding assembly is different among the position of a RF transceiver group 302 and the assembly of the 2nd RF transceiver group 304 and Fig. 5.Except LO produces circuit 307 and LO distributor circuit 306, do not comprise other local oscillation circuit assembly among Fig. 6.Certainly, the reader should know, for simplicity, and not shown these assemblies among Fig. 6, but the complete structure of RF transceiver ic 300 needs these assemblies.
Among the embodiment of Fig. 6, from the symmetrical center line 350 of RF transceiver ic 300 outward, the module position of a RF transceiver group 302 is in proper order: the second RF band reflector 608, the second RF band receiver 606, the first RF band reflector 604 and the first RF band receiver 602.Equally, from the symmetrical center line 350 of RF transceiver ic 300 outward, the module position of the 2nd RR transceiver group 304 is in proper order: the second RF band reflector 610, the second RF band receiver 612, the first RF band reflector 614 and the first RF band receiver 616.Under this structure, the emitter/receiver that moves on common frequency band is to adjoining mutually rather than by assembly between two parties separately.
Because this structure has increased and will transmit signals to the degree of coupling (coupling) of adjoining common RF band receiver, this structure has reduced the complexity of employed local oscillation distribution circuitry 306.As shown in the figure, local oscillator partitioning circuitry 650 comprises driver 618,620 and 630.The structure of distributor circuit 650 can be with the partitioning circuitry 550 of Fig. 5 identical.Partitioning circuitry 650 preferably is positioned on the symmetrical center line 350 of RF transceiver ic 300.In addition, driver 620 and 630 is symmetrically located at the both sides of the symmetrical center line 350 of RF transceiver ic 300.First distribution portion 652 comprises driver 622, divided by 2 elements 624, driver 626, driver 628.Second distribution portion 654 comprises driver 632, divided by 2 elements 634, driver 636, driver 638.With partitioning circuitry shown in Figure 5 552 relatively, the structure of the partitioning circuitry 652 of Fig. 6 is simpler, energy consumption is littler, construct and the required arrangement space that connects up littler.
Fig. 7 is the RF transceiver ic of another embodiment according to the present invention or the partial schematic block diagram of a plurality of RF transceiver ics.Particularly, Fig. 7 has shown that structure how to expand a RF transceiver group 302 is to comprise additional RF receiver and RF transceiver.Aspect the RF reflector on two RF bands and the orientation of RF receiver, the structure among Fig. 7 is similar to structure among Fig. 5.Under this situation, a RF transceiver group 302 comprises the second RF band reflector 702, the first RF band reflector 704, the second RF band receiver 706, the first RF band receiver 708, the second RF band reflector 710, the first RF band reflector 712, the second RF band receiver 714 and the first RF band receiver 716.The assembly of the one RF transceiver group 302 may reside on the single RF transceiver ic, and this IC is divided into left cut section (elements on online 717 left sides) and right cut section (elements on online 717 the right) by line 717.As selection, the assembly of a RF transceiver group 302 can design on a plurality of RF transceiver ics that separate along line 717.On structural extended to the two RF transceiver groups with Fig. 7, can comprise additional and the reflector and the receiver assembly correspondence of the 2nd RF transceiver group.The one RF transceiver group 302 and the 2nd RF transceiver group (not shown) are symmetrical substantially with respect to the symmetrical center line 350 of RF transceiver ic 300.
Local oscillation distribution circuitry 306 comprises the partitioning circuitry 750 and first distribution portion 752.Under this situation, partitioning circuitry 750 comprises driver 718,720 and 722.First distribution portion 752 comprises divided by 2 elements 724 and driver 726,728,730,732,736,738 and 740.When a RF transceiver group 302 was positioned on the single RF transceiver ic, all elements of this first distribution portion 752 all were positioned on this single RF transceiver ic.But if the assembly of a RF transceiver group 302 is crossed over a plurality of IC, the assembly of first distribution portion 752 will be positioned on a plurality of RF transceiver ics that separate from line 717 so.
Fig. 8 is the RF transceiver ic of another embodiment according to the present invention or the partial schematic block diagram of a plurality of RF transceiver ics.The structure of Fig. 8 can be positioned on the single RF transceiver ic or be positioned on a plurality of RF transceiver ics, and, corresponding with the structure of Fig. 6 usually.When the structure of Fig. 8 was positioned on the single RF transceiver ic, all component of a RF transceiver group 302 all was positioned on this single RF transceiver ic, and line 817 should be divided into left cut section and right cut section by single RF transceiver ic.But, when assembly shown in Figure 8 be positioned at a plurality of RF transceiver ics (as, in the time of along line 817 separately), some assemblies of the one RF transceiver ic 302 and distribution portion 852 are positioned on the RF transceiver ic, and other assemblies of a RF transceiver ic 302 and distribution portion 852 then are positioned on the 2nd RF transceiver ic.
The structure of Fig. 8 has shown the Tx of a RF transceiver group 302 and the different order of Rx module.Under this situation, a RF transceiver group 302 comprises the second RF band reflector 802, the second RF band receiver 804, the first RF band reflector 806, the first RF band receiver 808, the second RF band reflector 810, the second RF band receiver 812, the first RF band reflector 814 and the first RF band receiver 816.Shown also among Fig. 8 that local oscillator produces circuit 307 and local oscillation distribution circuitry 306.The local oscillation distribution circuitry 306 corresponding with a RF transceiver group 302 comprises the partitioning circuitry 850 and first distribution portion 852.Partitioning circuitry 850 comprises driver 816,820,840.First distribution portion 852 comprises driver 822,826,828,830,832,836 and 838.First distribution portion 852 also comprises divided by 2 elements 824.Certainly, because assembly shown in Figure 8 only corresponding to half of RF transceiver, so the second distribution portion (not shown) is symmetrically located at the opposite side of the symmetrical center line 350 of this RF transceiver ic.
Fig. 9 is the schematic block diagram of another RF transceiver ic according to an embodiment of the invention.The RF transceiver ic shown in Figure 9 described principle of Fig. 4-8 of having extended.RF transceiver ic 900 comprises a RF transceiver group 902, the 2nd RF transceiver group 904, the 3rd RF transceiver group 906 and the 4th RF transceiver group 908.RF transceiver ic 900 also comprises first baseband part 962, second baseband part 964, the 3rd baseband part 966 and the 4th baseband part 968.First baseband part 962 comprises that first receives the baseband part 910 and the first transmitting baseband parts 912.Second baseband part 964 comprises that the second transmitting baseband parts 916 and second receive baseband part 914.The 3rd baseband part 966 comprises that the 3rd receives baseband part 918 and the 3rd transmitting baseband parts 920.The 4th baseband part 968 comprises that the 4th transmitting baseband parts 922 and the 4th receive baseband part 924.
RF transceiver ic 900 shown in Figure 9 comprises the XO/VCO/LO circuit, is called as local oscillator together and produces circuit 940.RF transceiver ic 900 also comprises local oscillation distribution circuitry 942 and local oscillation distribution circuitry 944.Local oscillation distribution circuitry 942 is a RF transceiver group 902 and 904 services of the 2nd RF transceiver group.Local oscillation distribution circuitry 944 is the 3rd RF transceiver group 906 and 908 services of the 4th RF transceiver group.Fig. 9 also shows PLL 938.PLL 938 produces circuit 940 to produce at least one local oscillator in conjunction with local oscillator.
The input and output structure of RF transceiver ic 900 comprises RF analog interface 926,928,930 and 932, and these 4 interfaces are respectively a RF transceiver group 902, the 2nd RF transceiver group 904, the 3rd RF transceiver group 906,908 services of the 4th RF transceiver group.The input and output structure of RF transceiver ic 900 also comprises static number interface 946, dynamic digital interface 954 and 956.Base band/IF analog interface 934 and 936 is the baseband part 962,964,966 and 968 services of RF transceiver ic 900.Because base band/IF analog interface 934 and 936 is not on the edge of RF transceiver ic 900, so can not employing standard welding (bonding) technology.Therefore, under this structure, need to use off-gauge wire lead termination (lead termination) and mounting technology (packaging technique).
The various symmetric relations that shown the assembly of RF transceiver ic 900 among Fig. 9.According to the one side of the instruction of Fig. 9, the 2nd a RF transceiver group 904 and a RF transceiver group 902 are with respect to first symmetrical center line 950 of RF transceiver ic 900 symmetry substantially.According on the other hand, the 3rd a RF transceiver group 906 and a RF transceiver group 902 are with respect to second symmetrical center line 952 of RF transceiver ic 900 symmetry substantially.Wherein, second symmetrical center line 952 of RF transceiver ic 900 is vertical substantially with first symmetrical center line 950 of RF transceiver ic 900.
Instruct on the other hand according to Fig. 9, the 4th RF transceiver group 908 and the 3rd RF transceiver group 906 are symmetrical substantially with respect to first symmetrical center line 950 of RF transceiver ic 900.In addition, the 4th RF transceiver group 908 and the 2nd RF transceiver group 904 are symmetrical substantially with respect to second symmetrical center line 952 of RF transceiver ic 900.
According to other symmetric relations of structure shown in Figure 9, second baseband part 964 and first baseband part 962 are symmetrical substantially with respect to first symmetrical center line 950 of RF transceiver ic 900.According to another symmetric relation of structure shown in Figure 9, the 4th baseband part 968 and the 3rd baseband part 966 are symmetrical substantially with respect to first symmetrical center line 950 of RF transceiver ic 900.In addition, the 3rd baseband part 966 and first baseband part 962 are symmetrical substantially with respect to second symmetrical center line 952 of RF transceiver ic 900.At last, the 4th baseband part 968 and second baseband part 964 are symmetrical substantially with respect to second symmetrical center line 952 of RF transceiver ic 900.This symmetric relation of baseband part extends to the assembly of baseband part, and like this, the various assemblies of baseband part also have symmetric relation.
Figure 10 be according to still a further embodiment single RF transceiver ic or the partial schematic block diagram of a plurality of RF transceiver ics.Structure shown in Figure 10 can be positioned on the single RF transceiver ic or be positioned on a plurality of reflector IC, and usually corresponding to structure shown in Figure 6.Structure shown in Figure 10 has shown the Tx of a RF transceiver group 302 and the different order of Rx module.Under this situation, a RF transceiver group 302 comprises the second RF band reflector 1002, the second RF band receiver 1004, the second RF band reflector 1006, the second RF band receiver 1008, the first RF band reflector 1010, the first RF band receiver 1012, the first RF band reflector 1014 and the first RF band receiver 1016.Shown also among Figure 10 that local oscillator produces circuit 307 and local oscillation distribution circuitry 306.The local oscillation distribution circuitry 306 corresponding with a RF transceiver group 302 comprises the partitioning circuitry 1050 and first distribution portion 1052.Partitioning circuitry 1050 comprises driver 1016,1020,1040.First distribution portion 1052 comprises driver 1022,1024,1026,1028,1030 and 1032.First distribution portion 1052 also comprises divided by 2 elements 1034.Certainly, because assembly shown in Figure 10 only corresponding to half of RF transceiver, so the second distribution portion (not shown) is symmetrically located at the opposite side of the symmetrical center line 350 of this RF transceiver ic.
Those skilled in the art can be appreciated that, term " basically " or " approximately " as what may use, provide a kind of acceptable in the industry tolerance to corresponding term here.This acceptable in the industry tolerance is from less than 1% to 20%, and corresponding to, but be not limited to, components values, integrated circuit are handled fluctuation, temperature fluctuation, rising and fall time and/or thermal noise.Those skilled in the art also can be appreciated that, term " is operably connected ", as what may use here, comprise by another assembly, element, circuit or module and directly connect and be connected indirectly, wherein for indirect connection, middle plug-in package, element, circuit or module do not change the information of signal, but can adjust its current level, voltage level and/or power level.Can be appreciated that as those skilled in the art, infer connect (that is an element is connected to another element according to inference) comprise between two elements with the method that is same as " being operably connected " directly be connected indirectly.Also can be appreciated that as those skilled in the art, term " comparative result is favourable ", as what may use here, referring to relatively provides a relation of wanting between two or more elements, project, the signal etc.For example, when the relation of wanting is a signal 1 when having amplitude greater than signal 2, when the amplitude of signal 1 during less than signal 1 amplitude, can obtain favourable comparative result greater than the amplitude of the amplitude of signal 2 or signal 2.
Though more than described various embodiment of the present invention, should be appreciated that its purpose only is to illustrate, and do not have restricted.Those skilled in the art knows, not leaving under the spirit and scope of the present invention situation, also can make various changes in the form and details.Therefore, protection scope of the present invention is improper only to be confined to arbitrary embodiment described above, limits and should and be equal to according to claim.
The present invention requires that application number is 60/668,050, the date of application is the priority of the U.S. Provisional Patent Application on April 4th, 2005, and the present invention is in full with reference to this patent.
Claims (10)
1, a kind of radio frequency transceiver integrated circuit comprises:
The first radio-frequency (RF) transceiver group is operationally served first radio frequency band and second radio frequency band;
The second radio-frequency (RF) transceiver group is operationally served first radio frequency band and second radio frequency band;
Local oscillator produces circuit, is used to produce local oscillator; With
Local oscillation distribution circuitry is operably connected to local oscillator and produces circuit, the first radio-frequency (RF) transceiver group and the second radio-frequency (RF) transceiver group, and this local oscillation distribution circuitry comprises:
Partitioning circuitry is used for producing a plurality of copies that circuit receives local oscillator and produces this local oscillator from local oscillator;
First distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first radio frequency band and second local oscillator corresponding with second radio frequency band based on described local oscillator, and first local oscillator and second local oscillator are offered the first radio-frequency (RF) transceiver group; With
Second distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first radio frequency band and second local oscillator corresponding with second radio frequency band based on described local oscillator, and first local oscillator and second local oscillator are offered the second radio-frequency (RF) transceiver group.
2, radio frequency transceiver integrated circuit according to claim 1, wherein, described local oscillator produces circuit and is located substantially on the symmetrical center line of radio frequency transceiver integrated circuit.
3, radio frequency transceiver integrated circuit according to claim 1, wherein, the partitioning circuitry in the described local oscillation distribution circuitry is located substantially on the symmetrical center line of radio frequency transceiver integrated circuit.
4, radio frequency transceiver integrated circuit according to claim 1, wherein, first distribution portion in the described local oscillation distribution circuitry and second distribution portion are symmetrical substantially with respect to the symmetrical center line of radio frequency transceiver integrated circuit.
5, radio frequency transceiver integrated circuit according to claim 1, wherein, described first distribution portion and second distribution portion all comprise a plurality of drivers and at least one divider.
6, radio frequency transceiver integrated circuit according to claim 1 wherein, also comprises:
First baseband part has first and receives the baseband part and the first transmitting baseband parts;
Second baseband part has second and receives the baseband part and the second transmitting baseband parts;
Wherein, described first baseband part and second baseband part are symmetrical substantially with respect to the symmetrical center line of radio frequency transceiver integrated circuit.
7, the local oscillation circuit in a kind of radio frequency transceiver integrated circuit, described radio frequency transceiver integrated circuit comprises the first radio-frequency (RF) transceiver group and the second radio-frequency (RF) transceiver group, wherein the first radio-frequency (RF) transceiver group is operationally served first radio frequency band and second radio frequency band, and the second radio-frequency (RF) transceiver group is operationally served first radio frequency band and second radio frequency band; Described local oscillation circuit comprises:
Local oscillator produces circuit, is used to produce local oscillator; With
Local oscillation distribution circuitry is operably connected to local oscillator and produces circuit, the first radio-frequency (RF) transceiver group and the second radio-frequency (RF) transceiver group, and this local oscillation distribution circuitry comprises:
Partitioning circuitry is used for producing a plurality of copies that circuit receives local oscillator and produces this local oscillator from local oscillator;
First distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first radio frequency band and second local oscillator corresponding with second radio frequency band based on described local oscillator, and first local oscillator and second local oscillator are offered the first radio-frequency (RF) transceiver group; With
Second distribution portion is connected in partitioning circuitry, is used for producing first local oscillator corresponding with first radio frequency band and second local oscillator corresponding with second radio frequency band based on described local oscillator, and first local oscillator and second local oscillator are offered the second radio-frequency (RF) transceiver group.
8, local oscillation circuit according to claim 7, wherein, described local oscillator produces circuit and is located substantially on the symmetrical center line of radio frequency transceiver integrated circuit.
9, local oscillation circuit according to claim 7, wherein, the partitioning circuitry of described local oscillation distribution circuitry is located substantially on the symmetrical center line of radio frequency transceiver integrated circuit.
10, local oscillation circuit according to claim 7, wherein, first distribution portion of described local oscillation distribution circuitry and second distribution portion are symmetrical substantially with respect to the symmetrical center line of radio frequency transceiver integrated circuit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66805005P | 2005-04-04 | 2005-04-04 | |
| US60/668,050 | 2005-04-04 | ||
| US11/173,043 | 2005-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1855747A true CN1855747A (en) | 2006-11-01 |
| CN100544217C CN100544217C (en) | 2009-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100737314A Expired - Fee Related CN100544217C (en) | 2005-04-04 | 2006-03-31 | Radio frequency transceiver integrated circuit and local oscillation circuit thereof |
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| Country | Link |
|---|---|
| CN (1) | CN100544217C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359924B (en) * | 2007-08-01 | 2012-04-25 | 联发科技（美国）股份有限公司 | Radio frequency integrated circuit and transmit/receive switch |
| CN103916172A (en) * | 2012-12-29 | 2014-07-09 | 重庆重邮信科通信技术有限公司 | Radio-frequency transceiver and radio-frequency transceiving method |
| CN106664105A (en) * | 2014-07-28 | 2017-05-10 | 赛莱诺通信（以色列）有限公司 | Concurrent dual-band WLAN device using MCM |
| CN110011673A (en) * | 2017-12-29 | 2019-07-12 | 德州仪器公司 | Radiofrequency launcher based on digimigration frequency generator |
-
2006
- 2006-03-31 CN CNB2006100737314A patent/CN100544217C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359924B (en) * | 2007-08-01 | 2012-04-25 | 联发科技（美国）股份有限公司 | Radio frequency integrated circuit and transmit/receive switch |
| CN103916172A (en) * | 2012-12-29 | 2014-07-09 | 重庆重邮信科通信技术有限公司 | Radio-frequency transceiver and radio-frequency transceiving method |
| CN103916172B (en) * | 2012-12-29 | 2018-03-02 | 锐迪科（重庆）微电子科技有限公司 | A kind of RF transceiver and radio frequency transmit-receive method |
| CN106664105A (en) * | 2014-07-28 | 2017-05-10 | 赛莱诺通信（以色列）有限公司 | Concurrent dual-band WLAN device using MCM |
| CN110011673A (en) * | 2017-12-29 | 2019-07-12 | 德州仪器公司 | Radiofrequency launcher based on digimigration frequency generator |
| US11206051B2 (en) | 2017-12-29 | 2021-12-21 | Texas Instruments Incorporated | Digital offset frequency generator based radio frequency transmitter |
| CN110011673B (en) * | 2017-12-29 | 2022-09-30 | 德州仪器公司 | Radio frequency transmitter based on digital offset frequency generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100544217C (en) | 2009-09-23 |
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