CN113805196B

CN113805196B - GNSS radio frequency module and electronic equipment

Info

Publication number: CN113805196B
Application number: CN202111052242.1A
Authority: CN
Inventors: 沈海磊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2024-05-28
Anticipated expiration: 2041-09-08
Also published as: CN113805196A

Abstract

The disclosure relates to the technical field of electronic equipment, in particular to a GNSS radio frequency module and electronic equipment, wherein the GNSS radio frequency module comprises: the GNSS receiver comprises an antenna unit, a first band-pass filter, a second band-pass filter, a third band-pass filter, an amplifying unit and a radio frequency transceiver unit, wherein the antenna unit is used for receiving GNSS signals; the first band-pass filter is connected with the antenna unit and is used for filtering Beidou signals in the GNSS signals; the second band-pass filter is connected with the antenna unit and is used for filtering GPS signals in the GNSS signals; the third band-pass filter is connected with the antenna unit and is used for filtering Glonass signals in the GNSS signals; the amplifying unit is respectively connected with the first band-pass filtering unit, the second band-pass filtering unit and the third band-pass filtering unit; the radio frequency receiving and transmitting unit is connected with the amplifying unit.

Description

GNSS radio frequency module and electronic equipment

Technical Field

The disclosure relates to the technical field of electronic equipment, in particular to a GNSS radio frequency module and electronic equipment.

Background

With the development and progress of technology, more and more electronic devices have satellite positioning functions. The electronic device implements satellite positioning through a global satellite navigation system (Global Navigation SATELLITE SYSTEM, GNSS), and commonly used GNSS includes a beidou satellite navigation system (beidou navigation SATELLITE SYSTEM, BDS), a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation SATELLITE SYSTEM, GLONASS), and the like. At present, the electronic equipment receives GNSS signals through the GNSS radio frequency module, but in a complex electromagnetic environment, the external noise has larger interference on the GNSS signals received by the GNSS radio frequency module, so that the positioning and navigation effects of the electronic equipment are poor.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An objective of the present disclosure is to provide a GNSS radio frequency module and an electronic device, thereby improving the anti-noise capability of the GNSS radio frequency module to at least a certain extent.

According to a first aspect of the present disclosure, there is provided a GNSS radio frequency module, comprising:

An antenna unit for receiving signals of the GNSS;

the first band-pass filter is connected with the antenna unit and is used for filtering Beidou signals in the GNSS signals;

The second band-pass filter is connected with the antenna unit and is used for filtering GPS signals in the GNSS signals;

The third band-pass filter is connected with the antenna unit and is used for filtering Glonass signals in the GNSS signals;

the amplifying unit is respectively connected with the first band-pass filtering unit, the second band-pass filtering unit and the third band-pass filtering unit and is used for amplifying the Beidou signal, the GPS signal and the Glonass signal respectively;

the radio frequency receiving and transmitting unit is connected with the amplifying unit and used for receiving the Beidou signal, the GPS signal and the Glonass signal.

According to a second aspect of the present disclosure, an electronic device is provided, where the electronic device includes the GNSS radio frequency module described above.

According to the GNSS radio frequency module provided by the embodiment of the disclosure, the GNSS signals are received through the antenna unit, the Beidou signals in the GNSS signals are filtered through the first band-pass filter, the GPS signals in the GNSS signals are filtered through the second band-pass filter, the Glonass signals in the GNSS signals are filtered through the third band-pass filter, the independent filtering of different signals is realized, the influence of external noise on the signals received by the GNSS radio frequency module is reduced, and the anti-interference capability of the GNSS radio frequency module under a complex electromagnetic environment is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic block diagram of a first GNSS radio module provided by an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of a second GNSS radio module provided by an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic block diagram of a third GNSS radio module provided by an exemplary embodiment of the present disclosure;

FIG. 4 is a schematic block diagram of a fourth GNSS radio module provided by an exemplary embodiment of the present disclosure;

FIG. 5 is a schematic block diagram of a fifth GNSS radio module provided by an exemplary embodiment of the present disclosure;

fig. 6 is a schematic diagram of an electronic device according to an exemplary embodiment of the present disclosure.

In the figure:

10. A GNSS radio frequency module; 110. an antenna unit; 111. a first antenna; 112. a second antenna; 113. a third antenna; 114. a fourth antenna; 210. a first band-pass filter; 220. a second band-pass filter; 230. a third band-pass filter; 310. an amplifying unit; 311. a first low noise power amplifier; 312. a second low noise power amplifier; 313. a third low noise power amplifier; 314. a fourth low noise power amplifier; 410. a radio frequency transceiver unit; 510. an antenna sharing device; 610. a multiplexer; 20. a display screen; 30. a frame; 40. a main board; 50. a battery; 60. and a rear cover.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

The embodiment of the disclosure first provides a GNSS radio frequency module 10, as shown in fig. 1, the GNSS radio frequency module 10 includes: an antenna unit 110, a first band-pass filter 210, a second band-pass filter 220, a third band-pass filter 230, an amplifying unit 310, and a radio frequency transceiving unit 410. The antenna unit 110 is used for receiving GNSS signals. The first band-pass filter 210 is connected to the antenna unit 110, and the first band-pass filter 210 is used for filtering the Beidou signal in the signals of the GNSS. The second band-pass filter 220 is connected to the antenna unit 110, and the second band-pass filter 220 is used for filtering GPS signals in GNSS signals. The third band-pass filter 230 is connected to the antenna unit 110, and the third band-pass filter 230 is used for filtering the Glonass signal in the GNSS signals. The amplifying unit 310 is connected to the first band-pass filtering unit, the second band-pass filtering unit, and the third band-pass filtering unit, and is configured to amplify the beidou signal, the GPS signal, and the Glonass signal, respectively. The radio frequency transceiver unit 410 is connected to the amplifying unit 310, and is configured to receive the beidou signal, the GPS signal and the Glonass signal.

According to the GNSS radio frequency module 10 provided by the embodiment of the disclosure, the antenna unit 110 is used for receiving GNSS signals, the first band-pass filter 210 is used for filtering Beidou signals in the GNSS signals, the second band-pass filter 220 is used for filtering GPS signals in the GNSS signals, and the third band-pass filter 230 is used for filtering Glonass signals in the GNSS signals, so that independent filtering of different signals is realized, the influence of external noise on signals received by the GNSS radio frequency module 10 is reduced, and the anti-interference capability of the GNSS radio frequency module 10 in a complex electromagnetic environment is improved.

The following will describe each part of the GNSS radio frequency module 10 provided in the embodiments of the present disclosure in detail:

The antenna unit 110 is configured to receive signals in the GNSS L1 frequency band, where the signals in the GNSS L1 frequency band may include a beidou signal, a GPS signal and a glass signal, where the frequency of the beidou signal is 1561MHz, the frequency of the GPS signal is 1575.42MHz, and the frequency of the glass signal is 1602MHz.

The antenna unit 110 may include one or more conductor branches for sensing signals of the GNSS L1 frequency band and converting the signals (electromagnetic waves) of the GNSS L1 frequency band into electrical signals.

In a possible implementation of the exemplary embodiments of the present disclosure, the antenna unit 110 may include: a first antenna 111, a second antenna 112, and a third antenna 113. The first antenna 111 is connected to the first band-pass filter 210, and is configured to receive the beidou signal and transmit the beidou signal to the first band-pass filter 210; the second antenna 112 is connected to the second band-pass filter 220, and is configured to receive the GPS signal and transmit the GPS signal to the second band-pass filter 220; the third antenna 113 is connected to the third band-pass filter 230 for receiving the glass signal and transmitting the glass signal to the second band-pass filter 220.

The first antenna 111, the second antenna 112, and the third antenna 113 may be provided to the electronic device, and the first antenna 111, the second antenna 112, and the third antenna 113 are insulated from each other. For example, the first antenna 111, the second antenna 112, and the third antenna 113 may be metal branches disposed on a frame of the electronic device. Or the first antenna 111, the second antenna 112, and the third antenna 113 may be metal segments provided to the rear cover of the electronic device. Or the first antenna 111, the second antenna 112 and the third antenna 113 may be metal branches provided on the motherboard of the electronic device.

When the first antenna 111, the second antenna 112, and the third antenna 113 are disposed on the frame of the electronic device, the first antenna 111, the second antenna 112, and the third antenna 113 may be sequentially disposed on the frame of the electronic device. A first gap is provided between the first antenna 111 and the second antenna 112, and an insulating material is filled in the first gap to insulate the first antenna 111 and the second antenna 112. A second gap is formed between the second antenna 112 and the third antenna 113, and an insulating material is filled in the second gap to insulate the second antenna 112 and the third antenna 113.

When the first antenna 111, the second antenna 112, and the third antenna 113 are provided to the rear cover of the electronic device, the first antenna 111, the second antenna 112, and the third antenna 113 are sequentially provided to the rear cover of the electronic device. A first gap is provided between the first antenna 111 and the second antenna 112, and an insulating material is filled in the first gap to insulate the first antenna 111 and the second antenna 112. A second gap is formed between the second antenna 112 and the third antenna 113, and an insulating material is filled in the second gap to insulate the second antenna 112 and the third antenna 113.

When the first antenna 111, the second antenna 112 and the third antenna 113 are disposed on the motherboard of the electronic device, the rear cover and/or the frame of the electronic device are made of insulating materials, so as to avoid the rear cover and the frame from shielding signals received by the first antenna 111, the second antenna 112 and the third antenna 113.

The first antenna 111, the second antenna 112, and the third antenna 113 in the embodiments of the present disclosure may be antennas for receiving only GNSS radio frequency signals. Or the first antenna 111, the second antenna 112, and the third antenna 113 may be antennas that are common to other antennas of the electronic device. For example, the first antenna 111 is also used for receiving WiFi signals, the second antenna 112 is also used for receiving 5G signals, etc.

When the first antenna 111 is used for receiving more than one target signal, the first antenna 111 may be connected to a switch, an input end of the switch is connected to the first antenna 111, and an output end of the switch is connected to the first band-pass filter 210 and the first signal filter respectively. The first signal filter is configured to filter a first signal, where the first signal is a target signal received by the first antenna 111 and other than the beidou signal. The switch is used to selectively transmit the signal received by the first antenna 111 to the first band-pass filter 210 or the first signal filter.

When the second antenna 112 is used for receiving more than one target signal, the second antenna 112 may be connected to a switch, where an input end of the switch is connected to the second antenna 112, and an output end of the switch is connected to the second band-pass filter 220 and the second signal filter, respectively. The second signal filter is used for filtering the second signal, which is the target signal other than the GPS signal received by the second antenna 112. The switch is used to selectively transmit the signal received by the second antenna 112 to the second bandpass filter 220 or the second signal filter.

When the third antenna 113 is used for receiving more than one target signal, the third antenna 113 may be connected to a switch, the input end of the switch is connected to the third antenna 113, and the output end of the switch is connected to the third band-pass filter 230 and the third signal filter, respectively. The third signal filter is configured to filter a third signal, which is a target signal other than the Glonass signal received by the third antenna 113. The switch is used to selectively transmit the signal received by the third antenna 113 to the third band-pass filter 230 or the third signal filter.

Of course, in practical applications, the first antenna 111, the second antenna 112 and the third antenna 113 may also be used for transmitting radio frequency signals, and at this time, the first antenna 111, the second antenna 112 and the third antenna 113 may be respectively connected to a feeding circuit, and the feeding circuit sends excitation signals to the first antenna 111, the second antenna 112 and the third antenna 113. The first antenna 111, the second antenna 112, and the third antenna 113 emit radio frequency signals (electromagnetic waves) in response to the excitation signal.

In another possible implementation of the exemplary embodiment of the present disclosure, the antenna unit 110 may include a fourth antenna 114, where the fourth antenna 114 is configured to receive signals in the GNSS L1 frequency band. That is, the fourth antenna 114 is capable of receiving Beidou signals, GPS signals, and Glonass signals. The Beidou signal, the GPS signal and the Glonass signal received by the fourth antenna 114 are transmitted to a first band pass filter 210, a second band pass filter 220 and a third band pass filter 230, respectively.

The fourth antenna 114 may be provided on a bezel, a back cover, or a motherboard of the electronic device. When the fourth antenna 114 is disposed on the frame of the electronic device, the frame of the electronic device may be a metal frame, and the fourth antenna 114 is a metal branch on the metal frame. When the fourth antenna 114 is disposed on the rear cover of the electronic device, the rear cover of the electronic device has at least one metal section, and the metal section is the fourth antenna 114. When the fourth antenna 114 is disposed on the motherboard of the electronic device, at least one of the frame and the back cover of the electronic device is made of an insulating material.

When the GNSS radio frequency module 10 receives the beidou signal, the GPS signal and the Glonass signal through the fourth antenna 114, the GNSS radio frequency module 10 may further include: the diplexer 510 is connected to the fourth antenna 114, the first band-pass filter 210, the second band-pass filter 220 and the third band-pass filter 230, and the diplexer 510 is configured to separate the beidou signal, the GPS signal and the Glonass signal in the signals of the GNSS L1 band, transmit the beidou signal to the first band-pass filter 210, transmit the GPS signal to the second band-pass filter 220, and transmit the Glonass signal to the third band-pass filter 230.

The diplexer 510 is configured to separate and output frequencies of different signals according to the frequencies of the signals received by the fourth antenna 114. The diplexer 510 may have one input port coupled to the fourth antenna 114 and a plurality of output ports coupled to respective bandpass filters.

The diplexer 510 is, for example, a three-way diplexer, whose input is connected to the fourth antenna 114, and from which the fourth antenna 114 receives signals into the three-way diplexer. The triplexer has three output ports connected to the first, second and third bandpass filters 210, 220, 230, respectively. Thereby transmitting the Beidou signal received by the fourth antenna 114 to the first bandpass filter 210, transmitting the GPS signal received by the fourth antenna 114 to the second bandpass filter 220, and transmitting the Glonass signal received by the fourth antenna 114 to the second bandpass filter 220.

In the embodiment of the present disclosure, the fourth antenna 114 receives the beidou signal, the GPS signal and the Glonass signal, which saves the number of antennas on the electronic device and is beneficial to the light and thin of the electronic device.

The first band-pass filter 210 is connected to the antenna unit 110, and the first band-pass filter 210 is configured to filter the beidou signal in the signals in the GNSS L1 frequency band. When the antenna unit 110 includes three antennas, the first band-pass filter 210 may be connected to the first antenna 111 to receive the beidou signal. When the antenna unit 110 includes an antenna, the first band-pass filter 210 is connected to the diplexer 510 to receive the Beidou signal.

The first band pass filter 210 may be a first surface acoustic wave filter that receives and filters the Beidou signal. The Beidou signal received by the first surface acoustic wave filter comprises a target Beidou signal and a noise signal, the noise signal is filtered after the Beidou signal passes through the first surface acoustic wave filter, and the remaining target Beidou signals are transmitted to the amplifying unit 310.

The frequency of the Beidou signal in the L1 frequency band is 1561MHz, so the center frequency of the first surface acoustic wave filter is configured to be 1561MHz. In order to improve the filtering precision of the first surface acoustic wave filter, the first surface acoustic wave filter is a narrow-band pass filter, and the bandwidth of the first surface acoustic wave filter is smaller than a preset threshold value, and the preset threshold value enables the filtering precision to meet the use requirement. By way of example, the bandwidth of the first surface acoustic wave filter may be 100Hz, 500Hz, 1MHz, or the like.

The second band-pass filter 220 is connected to the antenna unit 110, and the second band-pass filter 220 is used for filtering GPS signals in signals of the GNSS L1 frequency band. When the antenna unit 110 includes three antennas, the second band-pass filter 220 may be connected to the second antenna 112 to receive GPS signals. When the antenna unit 110 includes one antenna, the second band-pass filter 220 is connected to the diplexer 510 to receive the GPS signal.

The second bandpass filter 220 may be a second surface acoustic wave filter that receives and filters GPS signals. The GPS signal received by the second surface acoustic wave filter includes a target GPS signal and a noise signal, the noise signal is filtered after the GPS signal passes through the second surface acoustic wave filter, and the remaining target GPS signal is transmitted to the amplifying unit 310.

The frequency of the Beidou signal in the L1 frequency band is 1575.42MHz, so the center frequency of the second surface acoustic wave filter is configured to be 1575.42MHz. In order to improve the filtering precision of the second surface acoustic wave filter, the second surface acoustic wave filter is a narrow-band pass filter, and the bandwidth of the second surface acoustic wave filter is smaller than a preset threshold value, so that the filtering precision meets the use requirement. By way of example, the bandwidth of the second surface acoustic wave filter may be 100Hz, 500Hz, 1MHz, or the like.

The third band-pass filter 230 is connected to the antenna unit 110, and the third band-pass filter 230 is used for filtering the glass signal in the signals of the GNSS L1 frequency band. When the antenna unit 110 includes three antennas, the third band-pass filter 230 may be connected to the third antenna 113 to receive the Glonass signal. When the antenna unit 110 includes an antenna, the third band-pass filter 230 is connected to the diplexer 510 to receive the Glonass signal.

The third bandpass filter 230 may be a third surface acoustic wave filter that receives and filters the glass signal. The glass signal received by the third saw filter includes a target glass signal and a noise signal, the noise signal is filtered after the glass signal passes through the third saw filter, and the remaining target glass signal is transmitted to the amplifying unit 310.

The frequency of the Glonass signal in the L1 band is 1602MHz, and thus the center frequency of the third surface acoustic wave filter is configured to be 1602MHz. In order to improve the filtering precision of the third surface acoustic wave filter, the third surface acoustic wave filter is a narrow-band pass filter, and the bandwidth of the third surface acoustic wave filter is smaller than a preset threshold value, and the preset threshold value enables the filtering precision to meet the use requirement. By way of example, the bandwidth of the third surface acoustic wave filter can be 100Hz, 500Hz, 1MHz, or the like.

It should be noted that, in the above embodiment, the first band-pass filter 210, the second band-pass filter 220 and the third band-pass filter 230 are surface acoustic wave filters only for example, and in practical applications, the first band-pass filter 210, the second band-pass filter 220 and the third band-pass filter 230 may be other narrow-channel band-pass filters, which is not limited to this embodiment of the disclosure.

In a possible implementation manner of the embodiment of the present disclosure, the amplifying unit 310 may include a first low noise amplifier 311, where the first low noise amplifier 311 is connected to the first band-pass filter 210, the second band-pass filter 220, and the third band-pass filter 230, and the first low noise amplifier 311 is configured to amplify the beidou signal, the GPS signal, and the Glonass signal, respectively. The output end of the first low noise amplifier 311 is connected to the radio frequency transceiver unit 410, and transmits the amplified Beidou signal, GPS signal and Glonass signal to the radio frequency transceiver unit 410.

On this basis, the GNSS radio frequency module 10 further includes a multiplexer 610, where the multiplexer 610 is respectively connected to the first band-pass filter 210, the second band-pass filter 220, the third band-pass filter 230 and the amplifying unit 310, and is configured to transmit the beidou signal, the GPS signal and the glass signal to the amplifying unit 310 respectively.

The multiplexer 610 may include a plurality of inputs connected to the respective band pass filters and one output, and the output of the multiplexer 610 and the first low noise amplifier 311. For example, the multiplexer 610 may be a triplexer, an input terminal of the triplexer is connected to the first band-pass filter 210, the second band-pass filter 220 and the third band-pass filter 230, and an output terminal of the triplexer is connected to the first low noise amplifier 311.

The first low noise amplifier 311 has low noise coefficient, so when amplifying the beidou signal, the GPS signal and the Glonass signal, the device itself has small influence on the beidou signal, the GPS signal and the Glonass signal, which is beneficial to improving the accuracy of signal transmission.

Through the cooperation of the first low noise amplifier 311 and the multiplexer 610, the amplification of the Beidou signal, the GPS signal and the Glonass signal by one low noise filter is realized, the number of the low noise filters in the GNSS radio frequency module 10 can be saved, the piece distribution space can be saved, and the cost of electronic equipment can be reduced.

It will be appreciated that in practice single pole, multi-throw switches may be utilized in place of the multiplexer 610. For example, a single pole, triple throw switch may be utilized in place of a triplexer. The three throw ends of the single-pole three-throw switch are respectively connected with the first band-pass filter 210, the second band-pass filter 220 and the third band-pass filter 230, and the common end of the single-pole three-throw switch is connected with the first low noise amplifier 311.

Wherein the single pole, triple throw switch selectively transmits the Beidou signal, GPS signal and Glonass signal to the first low noise amplifier 311. When the first band-pass filter 210 is in operation, the single-pole three-throw switch turns on the first band-pass filter 210 and the first low noise amplifier 311, and transmits the Beidou signal from the first band-pass filter 210 to the first low noise amplifier 311. In operation of the second bandpass filter 220, the single pole, three throw switch turns on the second bandpass filter 220 and the first low noise amplifier 311, transmitting the GPS signal from the second bandpass filter 220 to the first low noise amplifier 311. In operation of the third bandpass filter 230, the single pole, three throw switch turns on the third bandpass filter 230 and the first low noise amplifier 311, transmitting the Glonass signal from the third bandpass filter 230 to the first low noise amplifier 311.

In another possible embodiment of the present disclosure, the amplifying unit 310 may include: a second low noise power amplifier 312, a third low noise power amplifier 313 and a fourth low noise power amplifier 314. The second low noise power amplifier 312 is connected to the first band-pass filter 210 and the radio frequency transceiver 410, respectively, and is configured to amplify the beidou signal; the third low noise power amplifier 313 is connected to the second band-pass filter 220 and the radio frequency transceiver unit 410, respectively, for amplifying the GPS signal; the fourth low noise power amplifier 314 is connected to the third band-pass filter 230 and the rf transceiver 410, respectively, for amplifying the Glonass signal.

The second low noise power amplifier 312 is connected to the first band-pass filter 210, amplifies the Beidou signal output by the first band-pass filter 210, and the amplified Beidou signal is transmitted to the radio frequency transceiver unit 410, that is, the Beidou signal is directly transmitted from the first band-pass filter 210 to the second low noise power amplifier 312, so that the problem that the Beidou signal loss is large due to device insertion loss in the transmission process is avoided. The second low noise power amplifier 312 has low noise coefficient, so that the device itself has little influence on the Beidou signal when amplifying the Beidou signal, which is beneficial to improving the accuracy of signal transmission.

The third low noise power amplifier 313 is connected to the second band-pass filter 220, amplifies the GPS signal output by the second band-pass filter 220, and the amplified GPS signal is transmitted to the radio frequency transceiver 410, that is, the GPS signal is directly transmitted from the second band-pass filter 220 to the third low noise power amplifier 313, so that the problem of high loss of the GPS signal due to device insertion loss in the transmission process is avoided. The third low noise power amplifier 313 has a low noise coefficient, so that the device itself has little influence on the GPS signal when amplifying the GPS signal, which is beneficial to improving the accuracy of signal transmission.

The fourth low noise power amplifier 314 is connected to the third band-pass filter 230, amplifies the Glonass signal output by the third band-pass filter 230, and the amplified Glonass signal is transmitted to the radio frequency transceiver 410, that is, the Glonass signal is directly transmitted from the third band-pass filter 230 to the fourth low noise power amplifier 314, so that the problem of larger loss of the Glonass signal due to device insertion loss in the transmission process is avoided. The fourth low noise power amplifier 314 has a low noise figure, so that the influence of the device on the glass signal is small when the glass signal is amplified, which is beneficial to improving the accuracy of signal transmission.

The radio frequency transceiver unit 410 may be a radio frequency transceiver, and when the amplifying unit 310 includes the first low noise amplifier 311, the radio frequency transceiver is connected to the first low noise amplifier 311. When the amplifying unit 310 includes the second low noise power amplifier 312, the third low noise power amplifier 313 and the fourth low noise power amplifier 314, the radio frequency transceiver is connected to the second low noise power amplifier 312, the third low noise power amplifier 313 and the fourth low noise power amplifier 314, respectively.

The radio frequency transceiver may include a frequency conversion circuit, a phase shift circuit, a demodulation circuit, etc., where the frequency conversion circuit is connected to the amplifying unit 310, and the frequency conversion circuit is used to adjust the frequency of the signal received by the radio frequency transceiver. The phase shifting circuit is connected with the frequency conversion circuit and is used for adjusting the phase of the received signal. The demodulation circuit is connected with the phase shifting circuit and is used for demodulating the Beidou signal, the GPS signal and the Glonass signal.

According to the GNSS radio frequency module 10 provided by the embodiment of the disclosure, the antenna unit 110 is used for receiving signals of the GNSS L1 frequency band, the first band-pass filter 210 is used for filtering Beidou signals in the signals of the GNSS L1 frequency band, the second band-pass filter 220 is used for filtering GPS signals in the signals of the GNSS L1 frequency band, and the third band-pass filter 230 is used for filtering Glonass signals in the signals of the GNSS L1 frequency band, so that independent filtering of different signals is realized, the influence of external noise on the signals received by the GNSS radio frequency module 10 is reduced, and the anti-interference capability of the GNSS radio frequency module 10 in a complex electromagnetic environment is improved.

The exemplary embodiments of the present disclosure also provide an electronic device, which includes the above-described GNSS radio frequency module 10.

The GNSS radio frequency module 10 includes: an antenna unit 110, a first band-pass filter 210, a second band-pass filter 220, a third band-pass filter 230, an amplifying unit 310, and a radio frequency transceiving unit 410. The antenna unit 110 is used for receiving GNSS signals. The first band-pass filter 210 is connected to the antenna unit 110, and the first band-pass filter 210 is used for filtering the Beidou signal in the GNSS signals. The second band-pass filter 220 is connected to the antenna unit 110, and the second band-pass filter 220 is used for filtering GPS signals in GNSS signals. The third band-pass filter 230 is connected to the antenna unit 110, and the third band-pass filter 230 is used for filtering the Glonass signal in the GNSS signals. The amplifying unit 310 is connected to the first band-pass filtering unit, the second band-pass filtering unit, and the third band-pass filtering unit, and is configured to amplify the beidou signal, the GPS signal, and the Glonass signal, respectively. The radio frequency transceiver unit 410 is connected to the amplifying unit 310, and is configured to receive the beidou signal, the GPS signal and the Glonass signal.

According to the electronic device provided by the embodiment of the disclosure, the antenna unit 110 is used for receiving the GNSS signals, the first band-pass filter 210 is used for filtering the Beidou signals in the GNSS signals, the second band-pass filter 220 is used for filtering the GPS signals in the GNSS signals, and the third band-pass filter 230 is used for filtering the Glonass signals in the GNSS signals, so that independent filtering of different signals is realized, the influence of external noise on the signals received by the GNSS radio frequency module 10 is reduced, and the anti-interference capability of the GNSS radio frequency module 10 in a complex electromagnetic environment is improved.

The electronic device provided by the embodiment of the disclosure may be an electronic device with a satellite positioning function, such as a mobile phone, a tablet computer, a notebook computer, a navigator, a vehicle-mounted computer, an electronic reader, a personal digital assistant, a smart watch, smart glasses or a helmet.

The electronic device provided in the embodiment of the present disclosure will be described in detail below by taking the electronic device as an example of a mobile phone:

The electronic device provided by the embodiments of the present disclosure may further include a display 20, a bezel 30, a main board 40, a battery 50, and a rear cover 60. The display screen 20 forms a front shell of the electronic device, the display screen 20 and the rear cover 60 are respectively connected with the frame 30, and the display screen 20, the frame 30 and the rear cover 60 form a containing space. The main board 40, the battery 50 and the GNSS radio frequency module 10 are disposed in the accommodating space.

The display 20 forms a display surface of the electronic device for displaying information such as images, text, and the like. The display 20 may be a Liquid crystal display 20 (Liquid CRYSTAL DISPLAY, LCD) or an organic light-Emitting Diode (OLED) display 20 or the like. A glass cover may be provided over the display screen 20. The glass cover plate can cover the display screen 20 to protect the display screen 20 from being scratched or damaged by water.

Functional modules such as a camera and a proximity sensor in the electronic device may be disposed below the display screen 20, and a fingerprint recognition module of the electronic device may be disposed on the back of the electronic device.

The frame 30 may be a hollow frame structure. The material of the frame 30 may include metal or plastic. The main board 40 is installed in the accommodation space. For example, the main board 40 may be mounted on the frame 30 and stored in the storage space together with the frame 30. The main board 40 is provided with a grounding point to realize grounding of the main board 40. One or more of the functional modules of a motor, microphone, speaker, receiver, headphone interface, universal serial bus interface (USB interface), camera, proximity sensor, ambient light sensor, gyroscope, and processor may be integrated on the motherboard 40. Meanwhile, the display screen 20 may be electrically connected to the main board 40. The main board 40 is provided with a display control circuit. The display control circuit outputs an electrical signal to the display screen 20 to control the display screen 20 to display information.

The battery 50 is mounted in the housing space. For example, the battery 50 may be mounted on the frame 30 and stored in the storage space together with the frame 30. The battery 50 may be electrically connected to the motherboard 40 to enable the battery 50 to power the electronic device. Wherein the motherboard 40 may have a power management circuit disposed thereon. The power management circuit is used to distribute the voltage provided by the battery 50 to the various electronic components in the electronic device.

The rear cover 60 is used to form the outer contour of the electronic device. The rear cover 60 may be integrally formed. In the process of forming the rear cover 60, a rear camera hole, a fingerprint recognition module mounting hole and other structures may be formed on the rear cover 60.

The antenna unit 110 may include a first antenna 111, a second antenna 112, and a third antenna 113. The first antenna 111, the second antenna 112, and the third antenna 113 may be metal branches disposed on the electronic device bezel 30. Or the first antenna 111, the second antenna 112, and the third antenna 113 may be metal segments provided to the electronic device rear cover 60. Or the first antenna 111, the second antenna 112, and the third antenna 113 may be metal branches provided on the electronic device motherboard 40.

When the first antenna 111, the second antenna 112, and the third antenna 113 are disposed on the bezel 30 of the electronic device, the first antenna 111, the second antenna 112, and the third antenna 113 may be sequentially disposed on the bezel 30 of the electronic device. A first gap is provided between the first antenna 111 and the second antenna 112, and an insulating material is filled in the first gap to insulate the first antenna 111 and the second antenna 112. A second gap is formed between the second antenna 112 and the third antenna 113, and an insulating material is filled in the second gap to insulate the second antenna 112 and the third antenna 113.

When the first antenna 111, the second antenna 112, and the third antenna 113 are provided to the rear cover 60 of the electronic device, the first antenna 111, the second antenna 112, and the third antenna 113 are sequentially provided to the rear cover 60 of the electronic device. A first gap is provided between the first antenna 111 and the second antenna 112, and an insulating material is filled in the first gap to insulate the first antenna 111 and the second antenna 112. A second gap is formed between the second antenna 112 and the third antenna 113, and an insulating material is filled in the second gap to insulate the second antenna 112 and the third antenna 113.

When the first antenna 111, the second antenna 112 and the third antenna 113 are disposed on the motherboard 40 of the electronic device, the material of the back cover 60 and/or the frame 30 of the electronic device is an insulating material, so as to avoid the back cover 60 and the frame 30 of the back cover 60 from shielding signals received by the first antenna 111, the second antenna 112 and the third antenna 113.

When the antenna unit 110 includes the fourth antenna 114, the fourth antenna 114 may be disposed on the frame 30, the rear cover 60, or the motherboard 40 of the electronic device. When the fourth antenna 114 is disposed on the frame 30 of the electronic device, the frame 30 of the electronic device may be a metal frame 30, and the fourth antenna 114 is a metal branch on the metal frame 30. When the fourth antenna 114 is disposed on the back cover 60 of the electronic device, the back cover 60 of the electronic device has at least one metal section, and the metal section is the fourth antenna 114. When the fourth antenna 114 is disposed on the motherboard 40 of the electronic device, at least one of the frame 30 and the back cover 60 of the electronic device is made of an insulating material.

The first band pass filter 210, the second band pass filter 220, the third band pass filter 230, the amplifying unit 310 (the first low noise amplifier 311 or the second low noise power amplifier 312, the third low noise power amplifier 313 and the fourth low noise power amplifier 314), the radio frequency transceiving unit 410, the diplexer 510 and the multiplexer 610 may be provided on the main board 40.

According to the electronic device provided by the embodiment of the disclosure, the antenna unit 110 is used for receiving signals of the GNSS L1 frequency band, the first band-pass filter 210 is used for filtering Beidou signals in the signals of the GNSS L1 frequency band, the second band-pass filter 220 is used for filtering GPS signals in the signals of the GNSS L1 frequency band, the third band-pass filter 230 is used for filtering Glonass signals in the signals of the GNSS L1 frequency band, independent filtering of different signals is achieved, influence of external noise on the signals received by the GNSS radio frequency module 10 is reduced, and anti-interference capability of the GNSS radio frequency module 10 in a complex electromagnetic environment is improved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A GNSS radio frequency module, characterized in that it comprises:

an antenna unit for receiving GNSS signals;

The multiplexer is respectively connected with the first band-pass filter, the second band-pass filter and the third band-pass filter and is used for respectively transmitting the Beidou signal, the GPS signal and the Glonass signal to the amplifying unit;

the amplifying unit comprises a first low-noise power amplifier and the multiplexer, and is used for amplifying the Beidou signal, the GPS signal and the Glonass signal;

The radio frequency receiving and transmitting unit is connected with the amplifying unit and used for receiving the Beidou signal, the GPS signal and the Glonass signal;

The antenna unit is used for receiving signals of a GNSS L1 frequency band, the frequency of the Beidou signal is 1561MHz, the frequency of the GPS signal is 1575.42MHz, the frequency of the Glonass signal is 1602MHz, and the antenna unit comprises: the first antenna is connected with the first band-pass filter and is used for receiving the Beidou signal and transmitting the Beidou signal to the first band-pass filter; the second antenna is connected with the second band-pass filter and is used for receiving the GPS signals and transmitting the GPS signals to the second band-pass filter; the third antenna is connected with the third band-pass filter and is used for receiving the Glonass signal and transmitting the Glonass signal to the second band-pass filter; the first band-pass filter is a first surface acoustic wave filter, a center frequency of the first surface acoustic wave filter is configured to 1561MHz, the second band-pass filter is a second surface acoustic wave filter, a center frequency of the second surface acoustic wave filter is configured to 1575.42MHz, the third band-pass filter is a third surface acoustic wave filter, and a center frequency of the third surface acoustic wave filter is configured to 1602MHz.

2. The GNSS radio frequency module of claim 1, wherein the antenna unit includes:

and the fourth antenna is respectively connected with the first band-pass filter, the second band-pass filter and the third band-pass filter and is used for receiving the Beidou signal, the GPS signal and the Glonass signal.

3. The GNSS radio frequency module of claim 2, wherein the GNSS radio frequency module further comprises:

The antenna duplexer is used for separating the Beidou signal, the GPS signal and the Glonass signal received by the fourth antenna, transmitting the Beidou signal to the first band-pass filter, transmitting the GPS signal to the second band-pass filter and transmitting the Glonass signal to the third band-pass filter.

4. An electronic device, comprising the GNSS radio frequency module of any of claims 1-3.