Radio frequency circuit, radio frequency module and electronic device
By using a combination of four antennas and a signal processing module in the radio frequency circuit, the problems of complex hardware circuits and high cost in dual SIM dual standby scenarios are solved, achieving simplified design and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- REALME MOBILE TELECOMM SHENZHEN CO LTD
- Filing Date
- 2021-09-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing RF circuits have complex hardware circuit designs for dual receiver, dual SIM dual standby scenarios, which increases hardware costs.
A radio frequency circuit design is adopted, wherein the antenna group includes four antennas, the signals of the first identification card and the second identification card are processed by the first signal processing module and the second signal processing module, and the transceiver module performs signal modulation and demodulation, which simplifies the radio frequency circuit design and reduces the area of the printed circuit board.
It enables the reception of downlink signals from two identification cards on a single path, simplifying RF circuit design and reducing hardware costs.
Smart Images
Figure CN116346157B_ABST
Abstract
Description
[0001] Case Analysis
[0002] This application is a divisional application of Chinese Patent No. 202111160684.8, filed on September 30, 2021, entitled "Radio Frequency Circuit, Radio Frequency Module and Electronic Equipment". Technical Field
[0003] This application relates to the field of communication technology, and in particular to a radio frequency circuit, radio frequency module and electronic device. Background Technology
[0004] In related technologies, in order to make the radio frequency circuit suitable for dual-receiver dual-SIM dual-standby scenarios, four communication paths are configured for one identity card and two receiving paths are configured for the other identity card, which leads to complex hardware circuit design and increased hardware costs. Summary of the Invention
[0005] In view of this, embodiments of this application provide a radio frequency circuit, a radio frequency module, and an electronic device to at least solve the problems of complex hardware circuit design and increased hardware costs in related technologies.
[0006] The technical solution of this application embodiment is implemented as follows:
[0007] This application provides a radio frequency circuit, including:
[0008] An antenna group includes at least four antennas; the first antenna of the antenna group is used to receive downlink signals from a first identification card and a second identification card, and to transmit uplink signals from the first identification card; the second, third, and fourth antennas of the antenna group are used to transmit uplink signals from the first identification card and to receive downlink signals from the first identification card.
[0009] The first signal processing module is circuit-connected to the first antenna in the antenna group; the first signal processing module is used to process the downlink signal of the first identification card and the downlink signal of the second identification card received by the first antenna;
[0010] The second signal processing module is circuit-connected to each of the at least four antennas in the antenna group; the second signal processing module is used to process the downlink signals of the first identification card received by the second, third and fourth antennas in the antenna group;
[0011] The transceiver module is circuitally connected to the first signal processing module and the second signal processing module, respectively. The transceiver module is used to modulate the uplink signal of the first identification card and transmit the uplink signal of the first identification card to the second signal processing module so that the second signal processing module processes the uplink signal of the first identification card. The transceiver module is also used to demodulate the downlink signal output by the first signal processing module and the second signal processing module.
[0012] This application also provides a radio frequency module, which includes at least a radio frequency circuit; the radio frequency circuit is any of the above-described solutions.
[0013] This application also provides an electronic device, which includes at least a radio frequency (RF) circuit; the RF circuit is any of the above-described solutions.
[0014] In this embodiment, the first signal processing module enables the reception of downlink signals from the first and second identity cards on a single path, eliminating the need for separate configuration of two receiving paths for the second identity card. This simplifies the design of the radio frequency circuit and reduces the area on the printed circuit board of the radio frequency circuit, thereby lowering the hardware cost. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a radio frequency circuit in the related art provided in an embodiment of this application;
[0016] Figure 2 This is a schematic diagram of the structure of a radio frequency circuit provided in an embodiment of this application;
[0017] Figure 3 This is a schematic diagram of the internal structure of a first signal processing module provided in an embodiment of this application;
[0018] Figure 4 This is a schematic diagram of the internal structure of a second signal processing module provided in an embodiment of this application;
[0019] Figure 5 This is a schematic diagram of the structure of a first transceiver unit provided in an embodiment of this application;
[0020] Figure 6 This is a schematic diagram of the structure of the first receiving unit and the second receiving unit provided in an embodiment of this application;
[0021] Figure 7 This is a schematic diagram of the structure of a radio frequency circuit provided in an embodiment of this application;
[0022] Figure 8 This is a schematic diagram of the structure of a radio frequency module provided in one embodiment of this application;
[0023] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation
[0024] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0025] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.
[0026] It should be noted that the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.
[0027] Furthermore, in the embodiments of the present invention, terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0028] Before providing a detailed description of the technical solutions of the embodiments of this application, a brief description of the radio frequency circuits in the related technologies will be given first.
[0029] Figure 1 This is a schematic diagram of the structure of a radio frequency circuit in related technologies. For example... Figure 1 As shown, for 5G mobile terminals that support dual-SIM dual-standby (DR-DSDS), in Figure 1The arrows shown indicate the signal flow direction. The terminal configures different paths for the first and second identification cards. The second identification card is equipped with both a main receiving module and an auxiliary receiving module. These main and auxiliary receiving modules are connected to the first and second antennas respectively via double-pole double-throw switches. The first identification card is configured with four different paths: one path consists of the first identification card's main transmitting and receiving modules connected to the third antenna; another path consists of the first identification card's auxiliary receiving module connected to the fourth antenna; and the first identification card uses Multiple-Input Multiple-Output (MIMO)... The Multipleout 1 module is connected to the fifth antenna to form a path, and the first identification card MIMO2 auxiliary receiver module is connected to the sixth antenna to form another path. The main and auxiliary receivers configured for the second identification card are completely independent of the four paths configured for the first identification card. Therefore, the first identification card will not affect the data service of the second identification card during normal communication. For example, when using the first identification card to transmit data for game applications, the data service of the first identification card will not be interrupted when the second identification card is called. This RF circuit design has high requirements and also affects the layout area of the printed circuit board.
[0030] Based on this, embodiments of this application provide a radio frequency circuit. Figure 2 This is a schematic diagram of the radio frequency circuit according to an embodiment of this application. Figure 2 As shown, the radio frequency circuit includes an antenna group 201, a first signal processing module 202, a second signal processing module 203, and a transceiver module 204.
[0031] In this embodiment, the antenna group 201 is configured with four antennas: a first antenna 2011, a second antenna 2012, a third antenna 2013, and a fourth antenna 2014. The first antenna 2011 is responsible for processing signals from both the first and second identity cards. Specifically, the first antenna 2011 can simultaneously receive downlink signals from both the first and second identity cards, and can also transmit uplink signals from the first identity card. The second, third, and fourth antennas 2012 and 2013 are responsible for transmitting and receiving signals from the first identity card. Specifically, they can respectively receive downlink signals from the first identity card and transmit uplink signals from the first identity card. Downlink signals refer to signals transmitted by the base station and received by the electronic device, while uplink signals refer to signals transmitted by the electronic device and received by the base station. In practical applications, the first antenna 2011 serves as an auxiliary receiving antenna for the second identity card, and also as a MIMO antenna for the first identity card. The second antenna 2012 is the main transmitting and receiving antenna of the first identity card, the third antenna 2013 is the auxiliary receiving antenna of the first identity card, and the fourth antenna 2014 is the MIMO receiving antenna of the first identity card.
[0032] In one embodiment, the first identification card is applicable to the N41 frequency band, and the second identification card is applicable to the B3 or B39 frequency band. The first antenna 2011 can receive or transmit downlink signals from the first identification card in the N41 frequency band, and can also receive downlink signals from the second identification card in the B3 or B39 frequency band. The second antenna 2012, the third antenna 2013, and the fourth antenna 2014 can receive and transmit downlink signals from the first identification card in the N41 frequency band.
[0033] The first signal processing module 202 is circuitally connected to the first antenna 2011 of the antenna group 201. The first antenna 2011 can transmit the downlink signal received from the first identification card or the downlink signal from the second identification card to the first signal processing module 202. The first signal processing module 202 processes the downlink signal from the first identification card and the downlink signal from the second identification card.
[0034] In one embodiment, the internal structure of the first signal processing module 202 is shown in the schematic diagram below. Figure 3 As shown, the first signal processing module 202 includes a first receiving path and a second receiving path. The first receiving path is used to receive the downlink signal of the first identity card transmitted by the first antenna 2011, and the second receiving path is used to receive the downlink signal of the second identity card transmitted by the first antenna 2011. In practical applications, the first signal processing module 202 is a first identity card MIMO2 receiving module and a second identity card auxiliary receiving module.
[0035] The first receiving path consists of a first switching unit 2021, a dual-frequency filter 2022, and a first amplifier 2023. The first output pin of the first switching unit 2021 is connected to the input pin of the dual-frequency filter 2022, and the first output pin of the dual-frequency filter 2022 is connected to the input of the first amplifier 2023.
[0036] The second receiving path consists of a first switching unit 2021, a dual-frequency filter 2022, and a second amplifier 2024. The first output pin of the first switching unit 2021 is connected to the input pin of the dual-frequency filter 2022, and the second output pin of the dual-frequency filter 2022 is connected to the input of the second amplifier 2024.
[0037] The first antenna 2011 receives downlink signals from different frequency bands. Therefore, when the downlink signal enters the first signal processing module 202, it must first be frequency-selected by the first switching unit 2021 to obtain the downlink signal required by the first signal processing module 202. The first signal processing module 202 processes downlink signals from both the first and second identification cards. Therefore, the first output pin of the first switching unit 2021 outputs downlink signals within the frequency range of both the first and second identification cards. The downlink signal output from the first output pin of the first switching unit 2021 is either the downlink signal from the first identification card or the downlink signal from the second identification card. The dual-frequency filter 2022 determines whether the input downlink signal is from the first or second identification card based on its frequency. To select the corresponding output path for the input downlink signal, for example, the first output pin and the second output pin of the dual-band filter 2022 support signals from different frequency bands according to the characteristics of the dual-band filter 2022. Specifically, the first output pin allows signals operating in the frequency band of the downlink signal of the first identification card to pass through, and the second output pin allows signals operating in the frequency band of the downlink signal of the second identification card to pass through. In practical applications, the dual-band filter 2022 can support downlink signals combining the B3 and N41 frequency bands, as well as downlink signals combining the B39 and N41 frequency bands. When the downlink signal input to the dual-band filter 2022 is output through the first output pin, it means that the input downlink signal is the downlink signal of the first identification card. When the downlink signal input to the dual-band filter 2022 is output through the second output pin, it means that the input downlink signal is the downlink signal of the second identification card. The downlink signal from the first identification card output from the first output pin of the dual-frequency filter 2022 flows to the first amplifier 2023, which is a low-noise amplifier and amplifies the downlink signal from the first identification card. The downlink signal from the second identification card output from the second output pin of the dual-frequency filter 2022 flows to the second amplifier 2024, which is also a low-noise amplifier and amplifies the downlink signal from the second identification card. The downlink signal amplified by the first amplifier 2023 and the second amplifier 2024 flows to the transceiver module 204, where it demodulates the downlink signals from both the first and second identification cards.
[0038] The second signal processing module 203 is circuit-connected to the first antenna 2011, the second antenna 2012, the third antenna 2013, and the fourth antenna 2014 in the antenna group 201. The second signal processing module 203 can receive the downlink signal of the first identification card transmitted by the second antenna 2012, the third antenna 2013, and the fourth antenna 2014, and process the downlink signal of the first identification card. In addition, the second signal processing module 203 is also circuit-connected to the transceiver module 204. The second signal processing module 203 can receive the modulated uplink signal of the first identification card output by the transceiver module 204, process the modulated uplink signal of the first identification card, and then transmit the uplink signal of the first identification card through the first antenna 2011 connected to the second signal processing module 203.
[0039] In one embodiment, a schematic diagram of the internal structure of the second signal processing module 203 is shown below. Figure 4 As shown, Figure 4 The arrows in the diagram indicate the direction of signal flow. The second signal processing module includes a first transceiver unit 2031, a first receiving unit 2032, and a second receiving unit 2033.
[0040] In practical applications, the first transceiver unit 2031 is the main transmitting and receiving module of the first identity card. The first transceiver unit 2031 is responsible for processing the uplink signal of the first identity card. Specifically, the first transceiver unit 2031 is circuit-connected with the transceiver module 204. The uplink signal of the first identity card modulated by the transceiver module 204 flows to the first transceiver unit 2031. The first transceiver unit 2031 processes the uplink signal flowing into the first identity card. The first transceiver unit 2031 is circuit-connected with the first antenna 2011 to form a first transmission path. The first transceiver unit 2031 is also circuit-connected with the second antenna 2012 to form a second transmission path. The uplink signal of the first identity card processed by the first transceiver unit 2031 flows to the first antenna 2011 through the first transmission path, or the uplink signal of the first identity card processed by the first transceiver unit 2031 flows to the second antenna 2012 through the second transmission path. The first transceiver unit 2031 is also responsible for processing the downlink signal of the first identity card. Specifically, the downlink signal of the first identity card received by the second antenna 2012 flows to the first transceiver unit 2031, which processes the downlink signal of the first identity card. The downlink signal of the first identity card processed by the first transceiver unit 2031 flows to the transceiver module 204.
[0041] In practical applications, the first receiving unit 2032 serves as an auxiliary receiving module for the first identification card. The first receiving unit 2032 is responsible for processing the downlink signal from the first identification card. Specifically, the first receiving unit 2032 is circuit-connected to the third antenna 2013. The downlink signal from the first identification card received by the third antenna 2013 flows to the first receiving unit 2032. The first receiving unit 2032 processes the downlink signal, and the processed downlink signal from the first identification card flows to the transceiver module 204. The first receiving unit 2032 is also circuit-connected to the first transceiver unit 2031 to form a third transmission path. The uplink signal from the first identification card processed by the first transceiver unit 2031 flows to the first receiving unit 2032 via the third transmission path, and is then transmitted through the third antenna 2013.
[0042] In practical applications, the second receiving unit 2033 is the receiving module for the first identification card MINO1. The second receiving unit 2033 is responsible for processing the downlink signal from the first identification card. Specifically, the second receiving unit 2033 is circuit-connected to the fourth antenna 2014. The downlink signal from the first identification card received by the fourth antenna 2014 flows to the second receiving unit 2033. The second receiving unit 2033 processes the downlink signal from the first identification card, and the processed downlink signal from the first identification card flows to the transceiver module 204. The second receiving unit 2033 is also circuit-connected to the first transceiver unit 2031 to form a fourth transmission path. The uplink signal from the first identification card processed by the first transceiver unit 2031 flows to the second receiving unit 2033 via the fourth transmission path, and is then transmitted through the fourth antenna 2014.
[0043] In practical applications, the uplink signals of the first identification card processed by the first transceiver unit 2031 can be transmitted through the first transmission path, the second transmission path, the third transmission path, and the fourth transmission path. The first transmission path, the third transmission path, and the fourth transmission path are channel sounding reference signal (SRS) paths. The uplink signals of the first identification card processed by the first transceiver unit 2031 are transmitted through the second transmission path by default. The first transceiver unit 2031 transmits the uplink signals of the first identification card in turn through the first transmission path, the second transmission path, the third transmission path, and the fourth transmission path, selecting one transmission path at a time, and transmitting the uplink signals of the first identification card through the corresponding antenna in the antenna group 201 via the transmission path.
[0044] In one embodiment, when the first transceiver unit 2031 selects to transmit the uplink signal of the first identification card via the first transmission path, the uplink signal of the first identification card processed by the first transceiver unit 2031 flows to the first antenna 2011 via the first transmission path, and the first antenna 2011 transmits the uplink signal of the first identification card. When the first transceiver unit 2031 selects to transmit the uplink signal of the first identification card via the second transmission path, the uplink signal of the first identification card processed by the first transceiver unit 2031 flows to the second antenna 2012 via the second transmission path, and the second antenna 2012 transmits the uplink signal of the first identification card. When the first transceiver unit 2031 selects to transmit the uplink signal of the first identification card via the third transmission path, the uplink signal of the first identification card processed by the first transceiver unit 2031 flows to the third antenna 2013 via the third transmission path, and the third antenna 2013 transmits the uplink signal of the first identification card. When the first transceiver unit 2031 selects to transmit the uplink signal of the first identification card via the fourth transmission path, the uplink signal of the first identification card processed by the first transceiver unit 2031 flows to the fourth antenna 2014 via the fourth transmission path, and the fourth antenna 2014 transmits the uplink signal of the first identification card.
[0045] In one embodiment, such as Figure 5 As shown, Figure 5 The diagram shows the structure of the first transceiver unit 2031. The first transceiver unit 2031 includes a third receiving path and a first processing path. The third receiving path is used to process the downlink signal of the first identification card received by the second antenna 2012, and the first processing path is used to process the uplink signal of the first identification card modulated by the transceiver module 204.
[0046] The third receiving path consists of a first surface acoustic wave (SAW) filter 501 and a third amplifier 502. The input of the first SAW filter 501 is connected to the second antenna 2012. The downlink signal from the first identification card received by the second antenna 2012 flows to the input of the first SAW filter 501. The first SAW filter 501 filters the downlink signal from the first identification card and outputs the downlink signal. The output of the first SAW filter 501 is connected to the input of the third amplifier 502. The downlink signal from the first identification card flows to the input of the third amplifier 502. The third amplifier 502 amplifies the downlink signal from the first identification card with low noise and outputs it through its output. The output of the third amplifier 502 is connected to the input of the transceiver module 204. The downlink signal from the first identification card flows to the transceiver module 204, which demodulates the downlink signal from the first identification card.
[0047] The first processing path consists of a power amplifier 503 and a second surface acoustic wave (SAW) filter 504. The input of the power amplifier 503 is connected to the output of the transceiver module 204. The uplink signal of the first identification card modulated by the transceiver module 204 flows to the input of the power amplifier 503. The power amplifier 503 amplifies the uplink signal of the first identification card and outputs it through its output. The output of the power amplifier 503 is connected to the input of the second SAW filter 504. The uplink signal of the first identification card flows to the input of the second SAW filter 504. The second SAW filter 504 filters the uplink signal of the first identification card and outputs it through its output. The output of the second SAW filter 504 is connected to the second antenna 2012. The uplink signal of the first identification card flows to the second antenna 2012, and the second antenna 2012 transmits the uplink signal of the first identification card.
[0048] In one embodiment, such as Figure 6 As shown, Figure 6 A schematic diagram of the structure of the first receiving unit 2032 and the second receiving unit 2033 is shown. Both the first receiving unit 2032 and the second receiving unit 2033 are configured with a fourth receiving path.
[0049] The fourth receiving path in the first receiving unit 2032 consists of a third surface acoustic wave filter 601 and a fourth amplifier 602. The input terminal of the third surface acoustic wave filter 601 is connected to the third antenna 2013. The downlink signal from the first identification card received by the third antenna 2013 flows through the fourth receiving path of the first receiving unit 2032 to the input terminal of the third surface acoustic wave filter 601. The third surface acoustic wave filter 601 filters the downlink signal from the first identification card and outputs it from its output terminal. The output terminal of the first identification card is connected to the input terminal of the fourth amplifier 602. The downlink signal of the first identification card flows to the input terminal of the fourth amplifier 602. The fourth amplifier 602 amplifies the downlink signal of the first identification card with low noise and outputs it from the output terminal of the fourth amplifier 602. The output terminal of the fourth amplifier 602 is connected to the input terminal of the transceiver module 204. The downlink signal of the first identification card flows to the transceiver module 204. The transceiver module 204 demodulates the downlink signal of the first identification card on the fourth receiving path of the first receiving unit 2032.
[0050] The fourth receiving path in the second receiving unit 2033 consists of a third surface acoustic wave filter 603 and a fourth amplifier 604. The input terminal of the third surface acoustic wave filter 603 is connected to the fourth antenna 2014. The downlink signal from the first identification card received by the fourth antenna 2014 flows through the fourth receiving path of the second receiving unit 2033 to the input terminal of the third surface acoustic wave filter 603. The third surface acoustic wave filter 603 filters the downlink signal from the first identification card and outputs the signal from its output terminal. The output terminal of the first identification card is connected to the input terminal of the fourth amplifier 604. The downlink signal of the first identification card flows to the input terminal of the fourth amplifier 604. The fourth amplifier 604 amplifies the downlink signal of the first identification card with low noise and outputs it from the output terminal of the fourth amplifier 604. The output terminal of the fourth amplifier 604 is connected to the input terminal of the transceiver module 204. The downlink signal of the first identification card flows to the transceiver module 204. The transceiver module 204 demodulates the downlink signal of the first identification card on the fourth receiving path of the second receiving unit 2033.
[0051] The transceiver module 204 is circuitally connected to the first signal processing module 202, and can receive downlink signals from the first and second identity cards output by the first signal processing module 202, and demodulate the received downlink signals from the first and second identity cards. The transceiver module 204 is also circuitally connected to the second signal processing module 203, and can receive downlink signals from the first identity card output by the second signal processing module 203, and demodulate the received downlink signals from the first identity card. It can also modulate the uplink signal from the first identity card, and transmit the modulated uplink signal from the first identity card output by the transceiver module 204 to the second signal processing module 203, so that the second signal processing module 203 can process the received modulated uplink signal from the first identity card.
[0052] In one embodiment, such as Figure 7As shown, the radio frequency circuit also includes a second switching unit 701. Since the first antenna 2011 can be used to receive downlink signals from the first identification card and the second identification card, and can also be used to transmit uplink signals from the first identification card, the downlink signals from the first identification card and the second identification card received by the first antenna 2011 need to be processed by the first signal processing module 202, and the uplink signals from the first identification card transmitted by the first antenna 2011 need to be processed by the second signal processing module 203. Therefore, the second switching unit 701 is needed to select the receiving path or the transmitting path to complete the reception of the downlink signal or the transmission of the uplink signal. The second switching unit 701 is a single-pole double-throw switch with three pins. The first pin of the second switching unit 701 is connected to the first signal processing module 202, the second pin is connected to the second signal processing module 203, and the third pin is connected to the first antenna 2011. The second switching unit can select different paths based on different frequencies. Specifically, when the first antenna 2011 receives a downlink signal from the first identification card or the second identification card, the second switching unit 701 selects the first signal processing module 202 connected to the first pin, thereby connecting the first antenna 2011 to the first signal processing module 202, so that the downlink signal from the first identification card or the second identification card received by the first antenna can flow to the first signal processing module 202. When the second signal processing module 203 selects the first antenna 2011 to send the uplink signal of the first identification card, the second switching unit 701 selects the second signal processing module 203 connected to the second pin, so that the first antenna 2011 can be connected to the second signal processing module 203, and the uplink signal of the first identification card processed by the second signal processing module can flow to the first antenna 2011, so that the first antenna 2011 transmits the uplink signal of the first identification card.
[0053] In the above embodiments, the first signal processing module enables the first identity card to receive diversity and the second identity card to receive MIMO simultaneously, eliminating the need to configure two separate receiving paths for the second identity card. This simplifies the design of the radio frequency circuit and reduces the area on the printed circuit board of the radio frequency circuit, thereby lowering the hardware cost.
[0054] This application also provides a radio frequency module, such as... Figure 8 As shown, Figure 8 A schematic diagram of a radio frequency (RF) module is shown. The RF module includes at least one RF circuit, wherein the RF circuit includes:
[0055] An antenna group includes at least four antennas; the first antenna of the antenna group is used to receive downlink signals from a first identification card and a second identification card, and to transmit uplink signals from the first identification card; the second, third, and fourth antennas of the antenna group are used to transmit uplink signals from the first identification card and to receive downlink signals from the first identification card.
[0056] The first signal processing module is circuit-connected to the first antenna in the antenna group; the first signal processing module is used to process the downlink signal of the first identification card and the downlink signal of the second identification card received by the first antenna;
[0057] The second signal processing module is circuit-connected to each of the at least four antennas in the antenna group; the second signal processing module is used to process the downlink signals of the first identification card received by the second, third and fourth antennas in the antenna group;
[0058] The transceiver module is circuitally connected to the first signal processing module and the second signal processing module, respectively. The transceiver module is used to modulate the uplink signal of the first identification card and transmit the modulated uplink signal of the first identification card to the second signal processing module, so that the second signal processing module processes the uplink signal of the first identification card. The transceiver module is also used to demodulate the downlink signals output by the first signal processing module and the second signal processing module.
[0059] In one embodiment, the first signal processing module includes:
[0060] The first signal processing module includes a first receiving path and a second receiving path;
[0061] The first receiving path includes a first switching unit, a dual-frequency filter, and a first amplifier; the first output pin of the first switching unit is connected to the input pin of the dual-frequency filter; the first output pin of the dual-frequency filter is connected to the input terminal of the first amplifier; the first receiving path is used to receive the downlink signal from the first identification card; the first amplifier is used to amplify the downlink signal from the first identification card.
[0062] The second receiving path includes the first switching unit, the dual-frequency filter, and the second amplifier; the first output pin of the first switching unit is circuitally connected to the input pin of the dual-frequency filter; the second output pin of the dual-frequency filter is circuitally connected to the input terminal of the second amplifier; the second receiving path is used to receive the downlink signal from the second identification card; the second amplifier is used to amplify the downlink signal from the second identification card; wherein,
[0063] The first switching unit is used to select the frequency of the input downlink signal; the first output pin of the first switching unit outputs the signal within the frequency band range of the downlink signal of the first identification card and the downlink signal of the second identification card; the dual-frequency filter is used to select the output path of the input downlink signal.
[0064] In one embodiment, the first identification card is applicable to the N41 frequency band; the second identification card is applicable to the B3 frequency band or the B39 frequency band.
[0065] In one embodiment, the second signal processing module includes:
[0066] A first transceiver unit is circuit-connected to the transceiver module and processes the modulated uplink signal of the first identification card output by the transceiver module. The first transceiver unit also processes the downlink signal of the first identification card received by the second antenna. The first transceiver unit and the first antenna are circuit-connected to form a first transmission path. The first transceiver unit and the second antenna are circuit-connected to form a second transmission path. The first transmission path and the second transmission path are used to transmit the uplink signal of the first identification card.
[0067] The first receiving unit is circuit-connected to the third antenna and processes the downlink signal of the first identification card received by the third antenna; the first receiving unit is also circuit-connected to the first transceiver unit to form a third transmission path; the third transmission path is used to transmit the uplink signal of the first identification card.
[0068] The second receiving unit is circuit-connected to the fourth antenna and processes the downlink signal from the first identification card received by the fourth antenna. The first receiving unit is also circuit-connected to the first transceiver circuit to form a fourth transmission path. The fourth transmission path is used to transmit the uplink signal from the first identification card.
[0069] The first transceiver unit alternately selects the first transmission path, the second transmission path, the third transmission path, and the fourth transmission path to transmit the uplink signal of the first identification card in turn.
[0070] In one embodiment, the first antenna transmits the uplink signal of the first identification card based on the first transmission path;
[0071] The second antenna transmits the uplink signal of the first identification card based on the second transmission path;
[0072] The third antenna transmits the uplink signal of the first identification card based on the third transmission path;
[0073] The fourth antenna transmits the uplink signal of the first identification card based on the fourth transmission path.
[0074] In one embodiment, the radio frequency circuit further includes a second switching unit, wherein a first pin of the second switching unit is circuitally connected to the first signal processing module; a second pin of the second switching unit is circuitally connected to the second signal processing module; and a third pin of the second switching unit is connected to the first antenna. The second switching unit is configured to select the first signal processing module connected to the first pin when the first antenna receives a downlink signal from the first identification card or a downlink signal from the second identification card; and to select the first transceiver unit connected to the second pin when the second signal processing module selects the first antenna to transmit an uplink signal from the first identification card.
[0075] In one embodiment, the first transceiver unit includes a third receiving path and a first processing path;
[0076] The third receiving path includes a first surface acoustic wave (SAW) filter and a third amplifier; the input terminal of the first SAW filter is circuitically connected to the second antenna; the output terminal of the first SAW filter is circuitically connected to the input terminal of the third amplifier; the output terminal of the third amplifier is circuitically connected to the input terminal of the transceiver module; the first SAW filter is used to filter the downlink signal of the first identification card received by the second antenna; the third amplifier is used to amplify the output signal of the first SAW filter with low noise.
[0077] The first processing path includes a power amplifier and a second surface acoustic wave (SAW) filter; the input terminal of the power amplifier is circuitally connected to the output terminal of the transceiver module; the output terminal of the power amplifier is circuitally connected to the input terminal of the second SAW filter; the output terminal of the second SAW filter is circuitally connected to the second antenna; the power amplifier is used to amplify the uplink signal of the modulated first identification card output by the transceiver module; the second SAW filter is used to filter the output signal of the power amplifier.
[0078] In one embodiment, the first transceiver unit includes a third receiving path and a first processing path;
[0079] The third receiving path includes a first surface acoustic wave (SAW) filter and a third amplifier; the input terminal of the first SAW filter is circuitically connected to the second antenna; the output terminal of the first SAW filter is circuitically connected to the input terminal of the third amplifier; the output terminal of the third amplifier is circuitically connected to the input terminal of the transceiver module; the first SAW filter is used to filter the downlink signal of the first identification card received by the second antenna; the third amplifier is used to amplify the output signal of the first SAW filter with low noise.
[0080] The first processing path includes a power amplifier and a second surface acoustic wave (SAW) filter; the input terminal of the power amplifier is circuitally connected to the output terminal of the transceiver module; the output terminal of the power amplifier is circuitally connected to the input terminal of the second SAW filter; the output terminal of the second SAW filter is circuitally connected to the second antenna; the power amplifier is used to amplify the uplink signal of the modulated first identification card output by the transceiver module; the second SAW filter is used to filter the output signal of the power amplifier.
[0081] This application also provides an electronic device, such as... Figure 9 As shown, the electronic device includes at least a radio frequency (RF) circuit, which includes:
[0082] An antenna group includes at least four antennas; the first antenna of the antenna group is used to receive downlink signals from a first identification card and a second identification card, and to transmit uplink signals from the first identification card; the second, third, and fourth antennas of the antenna group are used to transmit uplink signals from the first identification card and to receive downlink signals from the first identification card.
[0083] The first signal processing module is circuit-connected to the first antenna in the antenna group; the first signal processing module is used to process the downlink signal of the first identification card and the downlink signal of the second identification card received by the first antenna;
[0084] The second signal processing module is circuit-connected to each of the at least four antennas in the antenna group; the second signal processing module is used to process the downlink signals of the first identification card received by the second, third and fourth antennas in the antenna group;
[0085] The transceiver module is circuitally connected to the first signal processing module and the second signal processing module, respectively. The transceiver module is used to modulate the uplink signal of the first identification card and transmit the modulated uplink signal of the first identification card to the second signal processing module, so that the second signal processing module processes the uplink signal of the first identification card. The transceiver module is also used to demodulate the downlink signals output by the first signal processing module and the second signal processing module.
[0086] In one embodiment, the first signal processing module includes:
[0087] The first signal processing module includes a first receiving path and a second receiving path;
[0088] The first receiving path includes a first switching unit, a dual-frequency filter, and a first amplifier; the first output pin of the first switching unit is connected to the input pin of the dual-frequency filter; the first output pin of the dual-frequency filter is connected to the input terminal of the first amplifier; the first receiving path is used to receive the downlink signal from the first identification card; the first amplifier is used to amplify the downlink signal from the first identification card.
[0089] The second receiving path includes the first switching unit, the dual-frequency filter, and the second amplifier; the first output pin of the first switching unit is circuitally connected to the input pin of the dual-frequency filter; the second output pin of the dual-frequency filter is circuitally connected to the input terminal of the second amplifier; the second receiving path is used to receive the downlink signal from the second identification card; the second amplifier is used to amplify the downlink signal from the second identification card; wherein,
[0090] The first switching unit is used to select the frequency of the input downlink signal; the first output pin of the first switching unit outputs the signal within the frequency band range of the downlink signal of the first identification card and the downlink signal of the second identification card; the dual-frequency filter is used to select the output path of the input downlink signal.
[0091] In one embodiment, the first identification card is applicable to the N41 frequency band; the second identification card is applicable to the B3 frequency band or the B39 frequency band.
[0092] In one embodiment, the second signal processing module includes:
[0093] A first transceiver unit is circuit-connected to the transceiver module and processes the modulated uplink signal of the first identification card output by the transceiver module. The first transceiver unit also processes the downlink signal of the first identification card received by the second antenna. The first transceiver unit and the first antenna are circuit-connected to form a first transmission path. The first transceiver unit and the second antenna are circuit-connected to form a second transmission path. The first transmission path and the second transmission path are used to transmit the uplink signal of the first identification card.
[0094] The first receiving unit is circuit-connected to the third antenna and processes the downlink signal of the first identification card received by the third antenna; the first receiving unit is also circuit-connected to the first transceiver unit to form a third transmission path; the third transmission path is used to transmit the uplink signal of the first identification card.
[0095] The second receiving unit is circuit-connected to the fourth antenna and processes the downlink signal from the first identification card received by the fourth antenna. The first receiving unit is also circuit-connected to the first transceiver circuit to form a fourth transmission path. The fourth transmission path is used to transmit the uplink signal from the first identification card.
[0096] The first transceiver unit alternately selects the first transmission path, the second transmission path, the third transmission path, and the fourth transmission path to transmit the uplink signal of the first identification card in turn.
[0097] In one embodiment, the first antenna transmits the uplink signal of the first identification card based on the first transmission path;
[0098] The second antenna transmits the uplink signal of the first identification card based on the second transmission path;
[0099] The third antenna transmits the uplink signal of the first identification card based on the third transmission path;
[0100] The fourth antenna transmits the uplink signal of the first identification card based on the fourth transmission path.
[0101] In one embodiment, the radio frequency circuit further includes a second switching unit, wherein a first pin of the second switching unit is circuitally connected to the first signal processing module; a second pin of the second switching unit is circuitally connected to the second signal processing module; and a third pin of the second switching unit is connected to the first antenna. The second switching unit is configured to select the first signal processing module connected to the first pin when the first antenna receives a downlink signal from the first identification card or a downlink signal from the second identification card; and to select the first transceiver unit connected to the second pin when the second signal processing module selects the first antenna to transmit an uplink signal from the first identification card.
[0102] In one embodiment, the first transceiver unit includes a third receiving path and a first processing path;
[0103] The third receiving path includes a first surface acoustic wave (SAW) filter and a third amplifier; the input terminal of the first SAW filter is circuitically connected to the second antenna; the output terminal of the first SAW filter is circuitically connected to the input terminal of the third amplifier; the output terminal of the third amplifier is circuitically connected to the input terminal of the transceiver module; the first SAW filter is used to filter the downlink signal of the first identification card received by the second antenna; the third amplifier is used to amplify the output signal of the first SAW filter with low noise.
[0104] The first processing path includes a power amplifier and a second surface acoustic wave (SAW) filter; the input terminal of the power amplifier is circuitally connected to the output terminal of the transceiver module; the output terminal of the power amplifier is circuitally connected to the input terminal of the second SAW filter; the output terminal of the second SAW filter is circuitally connected to the second antenna; the power amplifier is used to amplify the uplink signal of the modulated first identification card output by the transceiver module; the second SAW filter is used to filter the output signal of the power amplifier.
[0105] In one embodiment, the first transceiver unit includes a third receiving path and a first processing path;
[0106] The third receiving path includes a first surface acoustic wave (SAW) filter and a third amplifier; the input terminal of the first SAW filter is circuitically connected to the second antenna; the output terminal of the first SAW filter is circuitically connected to the input terminal of the third amplifier; the output terminal of the third amplifier is circuitically connected to the input terminal of the transceiver module; the first SAW filter is used to filter the downlink signal of the first identification card received by the second antenna; the third amplifier is used to amplify the output signal of the first SAW filter with low noise.
[0107] The first processing path includes a power amplifier and a second surface acoustic wave (SAW) filter; the input terminal of the power amplifier is circuitally connected to the output terminal of the transceiver module; the output terminal of the power amplifier is circuitally connected to the input terminal of the second SAW filter; the output terminal of the second SAW filter is circuitally connected to the second antenna; the power amplifier is used to amplify the uplink signal of the modulated first identification card output by the transceiver module; the second SAW filter is used to filter the output signal of the power amplifier.
[0108] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.
[0109] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.
[0110] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A radio frequency circuit, characterized in that, include: The antenna array includes at least four antennas; The first antenna of the antenna group is used to receive downlink signals from the first identification card and the second identification card, and to transmit uplink signals from the first identification card; the second, third, and fourth antennas of the antenna group are used to transmit uplink signals from the first identification card and to receive downlink signals from the first identification card. The first signal processing module is circuit-connected to the first antenna in the antenna group; the first signal processing module is used to process the downlink signal of the first identification card and the downlink signal of the second identification card received by the first antenna; The second signal processing module is circuit-connected to each antenna in the antenna group; the second signal processing module is used to process the downlink signals of the first identification card received by the second antenna, the third antenna and the fourth antenna in the antenna group; The transceiver module is circuitally connected to the first signal processing module and the second signal processing module respectively; the transceiver module is used to modulate the uplink signal of the first identity card and transmit the modulated uplink signal of the first identity card to the second signal processing module so that the second signal processing module processes the uplink signal of the first identity card. The transceiver module is also used to demodulate the downlink signals output by the first signal processing module and the second signal processing module; The second signal processing module includes: The first transceiver unit is connected to the first antenna to form a first transmission path; the first transceiver unit is connected to the second antenna to form a second transmission path; the first transmission path and the second transmission path are used to transmit the uplink signal of the first identification card; The first receiving unit is circuitically connected to the first transceiver unit to form a third transmission path; the third transmission path is used to transmit the uplink signal of the first identification card; The second receiving unit is circuitically connected to the first transceiver unit to form a fourth transmission path; the fourth transmission path is used to transmit the uplink signal of the first identification card; The uplink signals of the first identification card processed by the first transceiver unit can all be transmitted via the first transmission path, the second transmission path, the third transmission path, and the fourth transmission path; the first transmission path, the third transmission path, and the fourth transmission path are channel sounding reference signal (SRS) paths; the uplink signals of the first identification card processed by the first transceiver unit are transmitted by the second transmission path by default.
2. The radio frequency circuit according to claim 1, characterized in that, The first signal processing module includes: The first signal processing module includes a first receiving path and a second receiving path; The first receiving path includes a first switching unit, a dual-frequency filter, and a first amplifier; the first output pin of the first switching unit is connected to the input pin of the dual-frequency filter; the first output pin of the dual-frequency filter is connected to the input terminal of the first amplifier; the first receiving path is used to receive the downlink signal from the first identification card; the first amplifier is used to amplify the downlink signal from the first identification card. The second receiving path includes the first switching unit, the dual-frequency filter, and the second amplifier; the first output pin of the first switching unit is circuitally connected to the input pin of the dual-frequency filter; the second output pin of the dual-frequency filter is circuitally connected to the input terminal of the second amplifier; the second receiving path is used to receive the downlink signal from the second identification card; the second amplifier is used to amplify the downlink signal from the second identification card; wherein, The first switching unit is used to select the frequency of the input downlink signal; the first output pin of the first switching unit outputs the signal within the frequency band range of the downlink signal of the first identification card and the downlink signal of the second identification card; the dual-frequency filter is used to select the output path of the input downlink signal.
3. The radio frequency circuit according to claim 1, characterized in that, The first identification card is applicable to the N41 band; the second identification card is applicable to the B3 or B39 band.
4. The radio frequency circuit according to claim 1, characterized in that, The second signal processing module includes: The first transceiver unit is circuit-connected to the transceiver module and processes the uplink signal of the modulated first identification card output by the transceiver module; the first transceiver unit is also used to process the downlink signal of the first identification card received by the second antenna. The first receiving unit is connected to the third antenna in a circuit and processes the downlink signal of the first identification card received by the third antenna. The second receiving unit is connected to the fourth antenna in a circuit and processes the downlink signal of the first identification card received by the fourth antenna.
5. The radio frequency circuit according to claim 1, characterized in that, The first antenna transmits the uplink signal of the first identification card based on the first transmission path; The second antenna transmits the uplink signal of the first identification card based on the second transmission path; The third antenna transmits the uplink signal of the first identification card based on the third transmission path; The fourth antenna transmits the uplink signal of the first identification card based on the fourth transmission path.
6. The radio frequency circuit according to claim 1, characterized in that, The radio frequency circuit further includes a second switching unit. The first pin of the second switching unit is connected to the first signal processing module. The second pin of the second switching unit is connected to the second signal processing module. The third pin of the second switching unit is connected to the first antenna. The second switching unit is used to select the first signal processing module connected to the first pin when the first antenna receives the downlink signal of the first identification card or the downlink signal of the second identification card. When the second signal processing module selects the first antenna to transmit the uplink signal of the first identification card, the second switching unit selects the first transceiver unit connected to the second pin.
7. The radio frequency circuit according to claim 4, characterized in that, The first transceiver unit includes a third receiving path and a first processing path; The third receiving path includes a first surface acoustic wave (SAW) filter and a third amplifier; the input terminal of the first SAW filter is circuitically connected to the second antenna; the output terminal of the first SAW filter is circuitically connected to the input terminal of the third amplifier; the output terminal of the third amplifier is circuitically connected to the input terminal of the transceiver module; the first SAW filter is used to filter the downlink signal of the first identification card received by the second antenna; the third amplifier is used to amplify the output signal of the first SAW filter with low noise. The first processing path includes a power amplifier and a second surface acoustic wave (SAW) filter; the input terminal of the power amplifier is circuitally connected to the output terminal of the transceiver module; the output terminal of the power amplifier is circuitally connected to the input terminal of the second SAW filter; the output terminal of the second SAW filter is circuitally connected to the second antenna; the power amplifier is used to amplify the uplink signal of the modulated first identification card output by the transceiver module; the second SAW filter is used to filter the output signal of the power amplifier.
8. The radio frequency circuit according to claim 4, characterized in that, Both the first receiving unit and the second receiving unit are configured with a fourth receiving channel; The fourth receiving path includes a third surface acoustic wave filter and a fourth amplifier; the output terminal of the third surface acoustic wave filter is circuitally connected to the input terminal of the fourth amplifier; the output terminal of the fourth amplifier is circuitally connected to the input terminal of the transceiver module; the fourth amplifier is used to amplify the output signal of the third surface acoustic wave filter with low noise; wherein, The input terminal of the third surface acoustic wave filter in the fourth receiving path of the first receiving unit is connected to the third antenna in a circuit; the third surface acoustic wave filter in the fourth receiving path is used to filter the downlink signal of the first identification card received by the third antenna; The input terminal of the third surface acoustic wave filter in the fourth receiving path of the second receiving unit is connected to the fourth antenna in a circuit; the third surface acoustic wave filter in the fourth receiving path is used to filter the downlink signal of the first identification card received by the fourth antenna.
9. A radio frequency module, characterized in that, The radio frequency module includes at least the radio frequency circuit described in any one of claims 1 to 8.
10. An electronic device, characterized in that, The electronic device includes at least the radio frequency circuit described in any one of claims 1 to 8.