Radio frequency circuit and electronic equipment

Abstract

The utility model relates to the technical field of communication, in particular to a radio frequency circuit and electronic equipment. The radio frequency circuit comprises a cellular communication module, a GPS module, a first GPS signal processing module and a first GPS signal filter, wherein the GPS module, the first GPS signal processing module and the first GPS signal filter are connected in sequence. The cellular communication module and the first GPS signal filter are respectively connected with the extractor; a first common bonding pad and a second common bonding pad are arranged between the first antenna and the extractor and between the extractor and the first GPS signal filter, a third common bonding pad is arranged between the second common bonding pad and the first GPS signal filter, and a fourth common bonding pad is arranged between the first GPS signal filter and the first GPS signal processing module, so that the compatibility of the radio frequency circuit is improved; the production cost is reduced, and the problems that two sets of PCBs need to be manufactured in an existing manufacturing mode, and the cost is increased in the aspects of product production line control, plate making labor cost of a plate factory and the like are solved.

Description

Technical Field

[0001] The utility model relates to the field of communication technologies, and in particular, to a radio frequency circuit and an electronic device. Background Art

[0002] With the development of technology, the functions of electronic devices are becoming more and more abundant. For example, smart watches can support functions such as calls, GPS positioning, and Bluetooth (BT) connection. In order to meet the needs of different audiences, different configurations are usually set in the same electronic device. For example, a smart watch can be configured to support wireless systems such as cellular, WIFI, BT, and GPS, or can be configured to support wireless systems such as WIFI, BT, and GPS, and corresponding printed circuit boards (PCBs) are manufactured according to the foregoing configurations during the production process. However, in the prior art, corresponding PCBs are manufactured separately for each configuration. For example, when the foregoing two configurations are set in a smart watch, two sets of PCBs need to be manufactured, and this manufacturing method will have problems of increased costs in terms of product production line control, board factory plate making fees, etc. Summary of the Utility Model

[0003] The utility model provides a radio frequency circuit and an electronic device, which are used to be compatible with different configuration requirements of the electronic device and reduce production costs.

[0004] On the one hand, the utility model provides a radio frequency circuit, including: a cellular communication module, a GPS module, a first GPS signal filter, a first GPS signal processing module, a first antenna, a first common pad assembly, a second common pad assembly, and an extractor; the first common pad assembly includes a first common pad and a second common pad; the second common pad assembly includes a third common pad and a fourth common pad;

[0005] The first antenna is connected to the first end of the first common pad, and the second end of the first common pad is connected to the extractor;

[0006] The other end of the extractor is respectively connected to the cellular communication module and the first end of the second common pad; the second end of the second common pad is used to be connected to the third end of the first common pad;

[0007] The third end of the second common pad is connected to the first end of the third common pad;

[0008] The second end of the third common pad is used to be connected to the third end of the fourth common pad;

[0009] The third end of the third common pad is connected to one end of the first GPS signal filter;

[0010] The other end of the first GPS signal filter is connected to the first end of the fourth common pad;

[0011] The second end of the fourth common pad is connected to the first GPS signal processing module;

[0012] The first GPS signal processing module is connected to the GPS module.

[0013] Optionally, the cellular communication module includes: a cellular module circuit, a cellular coupler, and a cellular test socket;

[0014] The cellular module circuit is connected to the cellular coupler;

[0015] The cellular coupler is connected to the cellular test socket.

[0016] Optionally, the first GPS signal processing module includes: a first low-noise amplifier and a first filter;

[0017] The first GPS signal filter is connected to the first low-noise amplifier;

[0018] The first low-noise amplifier is connected to the first filter;

[0019] The first filter is connected to the GPS module.

[0020] Optionally, it includes a second GPS signal processing module, a short-range wireless communication module, a combiner, and a second antenna;

[0021] The GPS module is connected to the second GPS signal processing module;

[0022] The short-range wireless communication module and the second GPS signal processing module are respectively connected to the combiner;

[0023] The combiner is connected to the second antenna.

[0024] Optionally, the second GPS signal processing module includes a second filter, a second low-noise amplifier, and a third filter;

[0025] The GPS module is connected to the second filter;

[0026] The second filter is connected to the second low-noise amplifier;

[0027] The second low-noise amplifier is connected to the third filter;

[0028] The third filter is connected to the combiner.

[0029] Optionally, the short - range wireless communication module includes a wireless communication module circuit and a fourth filter;

[0030] The wireless communication module circuit is connected to the fourth filter;

[0031] The fourth filter is connected to the combiner.

[0032] Optionally, the wireless communication module circuit includes a WIFI / BT module.

[0033] Optionally, the first antenna is used for transmitting and receiving a first GPS signal and an LTE signal, and the frequency band of the first GPS signal is the L1 band.

[0034] Optionally, the second GPS signal processing module is used for filtering and amplifying a second GPS signal, and the frequency band of the second GPS signal is the L5 band.

[0035] Optionally, the frequency band of the WIFI / BT module includes 2.4G.

[0036] On the other hand, the present utility model provides an electronic device, including the radio frequency circuit as described above.

[0037] From the above technical solutions, it can be seen that the present utility model has the following advantages:

[0038] The present utility model provides a radio frequency circuit, including: a cellular communication module, a GPS module, a first GPS signal filter, a first GPS signal processing module, a first antenna, a first common pad assembly, a second common pad assembly, an extractor; the first common pad assembly includes a first common pad and a second common pad; the second common pad assembly includes a third common pad and a fourth common pad; the first antenna is connected to the first end of the first common pad, the second end of the first common pad is connected to the extractor; the other end of the extractor is respectively connected to the cellular communication module and the first end of the second common pad; the second end of the second common pad is used to be connected to the third end of the first common pad; the third end of the second common pad is connected to the first end of the third common pad; the second end of the third common pad is used to be connected to the third end of the fourth common pad; the third end of the third common pad is connected to one end of the first GPS signal filter; the other end of the first GPS signal filter is connected to the first end of the fourth common pad; the second end of the fourth common pad is connected to the first GPS signal processing module; the first GPS signal processing module is connected to the GPS module.

[0039] In the present utility model, if the electronic device supports cellular communication, then during production, the circuit between the third common solder pad and the fourth common solder pad is conducted, bypassing the first GPS signal filter, and the circuit between the first common solder pad and the second common solder pad is not conducted, so that the path between the first antenna, the extractor, and the cellular communication module is conducted, and the path between the extractor, the first GPS signal processing module, and the GPS module is conducted. If the electronic device does not support cellular communication, then during production, the circuit between the first common solder pad and the second common solder pad is conducted, and the circuit between the third common solder pad and the fourth common solder pad is not conducted, so that the path between the first antenna, the first common solder pad, the second common solder pad, the first GPS signal filter, the first GPS signal processing module, and the GPS module is conducted. Therefore, in the present utility model, by providing the first common solder pad and the second common solder pad between the first antenna and the extractor, and between the extractor and the first GPS signal filter, by providing the third common solder pad between the second common solder pad and the first GPS signal filter, and by providing the fourth common solder pad between the first GPS signal filter and the first GPS signal processing module, a radio frequency circuit can meet the configuration requirements for supporting cellular communication and the configuration requirements for not supporting cellular communication, improving the compatibility of the radio frequency circuit, reducing the production cost, and solving the problem that the existing manufacturing method requires manufacturing two sets of PCB boards, resulting in increased costs in aspects such as product production line control and board factory plate making labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0041] Figure 1 FIG. 1 is a schematic structural diagram of a radio frequency circuit provided by an embodiment of the present utility model;

[0042] Figure 2 FIG. 2 is a schematic structural diagram of a radio frequency circuit provided by an embodiment of the present utility model;

[0043] Figure 3 FIG. 3 is a schematic structural diagram of a radio frequency circuit provided by an embodiment of the present utility model;

[0044] Figure 4 FIG. 4 is a schematic structural diagram of a radio frequency circuit provided by an embodiment of the present utility model;

[0045] Figure 5 FIG. 5 is a schematic diagram of the principle of a radio frequency circuit provided by an embodiment of the present utility model that supports cellular, WIFI, BT, and GPS functions;

[0046] Figure 6 This is the schematic diagram of the RF circuit provided by the embodiment of the present utility model, which supports WIFI, BT, and GPS functions;

[0047] Figure 7 This is a partial schematic diagram of the PCB layout of the RF circuit provided by the embodiment of the present utility model;

[0048] In the figure, 1 is the cellular communication module; 2 is the GPS module; 3 is the short-range wireless communication module; 4 is the first GPS signal filter; 5 is the first GPS signal processing module; 6 is the second GPS signal processing module; 7 is the first antenna; 8 is the second antenna; 9 is the first common pad; 10 is the second common pad; 11 is the third common pad; 12 is the fourth common pad; 13 is the extractor; 14 is the combiner; 15 is the cellular module circuit; 16 is the cellular coupler; 17 is the cellular test socket; 18 is the first low-noise amplifier; 19 is the first filter; 20 is the second filter; 21 is the second low-noise amplifier; 22 is the third filter; 23 is the fourth filter; 24 is the WIFI / BT module; 111 is the first end of the third common pad; 112 is the second end of the third common pad; 113 is the third end of the third common pad; 121 is the first end of the fourth common pad; 122 is the second end of the fourth common pad; 123 is the third end of the fourth common pad. Detailed implementation manners

[0049] The embodiment of the present utility model provides an RF circuit and an electronic device, which are used to be compatible with different configuration requirements of the electronic device and reduce the production cost.

[0050] In order to make the purpose, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0051] Please refer to Figure 1, a radio frequency circuit provided by the present utility model includes: a cellular communication module 1, a GPS module 2, a first GPS signal filter 4, a first GPS signal processing module 5, a first antenna 7, a first common pad assembly, a second common pad assembly, and an extractor 13; the first common pad assembly includes a first common pad 9 and a second common pad 10; the second common pad assembly includes a third common pad 11 and a fourth common pad 12; the first antenna 7 is connected to the first end of the first common pad 9, and the second end of the first common pad 9 is connected to the extractor 13; the other end of the extractor 13 is respectively connected to the cellular communication module 1 and the first end of the second common pad 10; the second end of the second common pad 10 is used to be connected to the third end of the first common pad 9; the third end of the second common pad 10 is connected to the first end of the third common pad 11; the second end of the third common pad 11 is used to be connected to the third end of the fourth common pad 12; the third end of the third common pad 11 is connected to one end of the first GPS signal filter 4; the other end of the first GPS signal filter 4 is connected to the first end of the fourth common pad 12; the second end of the fourth common pad 12 is connected to the first GPS signal processing module 5; the first GPS signal processing module 5 is connected to the GPS module 2.

[0052] It should be noted that the first antenna 7 is used for receiving and transmitting the first GPS signal and the LTE signal. The extractor 13 is used for separating the first GPS signal and the LTE signal, transmitting the first GPS signal to the first GPS signal filter 4, and transmitting the LTE signal to the cellular communication module 1. The first GPS signal filter 4 is used for filtering the clutter in the received first GPS signal. The first GPS signal processing module 5 is used for amplifying and filtering the filtered first GPS signal in sequence, and transmitting the amplified and filtered first GPS signal to the GPS module 2. The cellular communication module 1 is used for receiving the LTE signal. Cellular communication is a mobile communication technology that divides the service area into several cell-shaped cells, and each cell is served by a base station, which includes 2G cellular communication, 3G cellular communication, 4G cellular communication, and 5G cellular communication. The LTE signal is a wireless communication signal generated by the Long Term Evolution technology. The Long Term Evolution technology continues the basic architecture of cellular communication and is the evolution of cellular communication technology. One end of the extractor 13 is the common end, and the other end of the extractor 13 can be divided into a cellular end and a first GPS signal output end. The cellular end is connected to the cellular communication module 1, and the first GPS signal output end is connected to the first end of the second common pad 10.

[0053] In the present utility model, if the electronic device supports cellular communication, then when manufacturing the PCB board, the circuit between the third common soldering pad 11 and the fourth common soldering pad 12 is fed and conducted, bypassing the first GPS signal filter 4, and the circuit between the first common soldering pad 9 and the second common soldering pad 10 is not conducted, so as to make the path between the first antenna 7, the extractor 13, and the cellular communication module 1 conductive, and make the path between the extractor 13, the first GPS signal processing module 5, and the GPS module 2 conductive. At this time, the obtained radio frequency circuit meets the configuration requirements for supporting cellular communication, such as Figure 1 shown, the LTE signal transmission path is: cellular communication module 1 - extractor 13 - first common soldering pad 9 - first antenna 7. The transmission path of the first GPS signal is: GPS module 2 - first GPS signal processing module 5 - fourth common soldering pad 12 - third common soldering pad 11 - second common soldering pad 10 - extractor 13 - first common soldering pad 9 - first antenna 7. Among them, in the feeding stage of the PCB board, the first GPS signal filter 4 can be selected not to be fed onto the PCB board to reduce production costs. Therefore, the schematic diagram of the obtained radio frequency circuit is as Figure 5 shown.

[0054] If the electronic device does not support cellular communication, then during production, the circuit between the first common soldering pad 9 and the second common soldering pad 10 is fed and conducted, bypassing the extractor 13, and the circuit between the third common soldering pad 11 and the fourth common soldering pad 12 is not conducted, so as to make the path between the first antenna 7, the first common soldering pad 9, the second common soldering pad 10, the first GPS signal filter 4, the first GPS signal processing module 5, and the GPS module 2 conductive. Among them, in the actual feeding stage of the PCB board, the extractor 13 and the cellular communication module 1 can be selected not to be fed onto the PCB board to reduce production costs, such as Figure 1 shown, the transmission path of the first GPS signal is: GPS module 2 - first GPS signal processing module 5 - fourth common soldering pad 12 - first GPS signal filter 4 - third common soldering pad 11 - second common soldering pad 10 - first common soldering pad 9 - first antenna 7. And in actual production, the space on the PCB board occupied by the cellular communication module 1, the extractor 13, and the circuit connection structure between the two can also be cut off to reduce the occupation of the space resources of the PCB board by the electronic device. At this time, the obtained radio frequency circuit meets the configuration requirements for not supporting cellular communication. Among them, the schematic diagram of the radio frequency circuit obtained after cutting is as Figure 6 shown.

[0055] Therefore, in the present utility model, a first common pad 9 and a second common pad 10 are provided between the first antenna 7 and the extractor 13, and between the extractor 13 and the first GPS signal filter 4. A third common pad 11 is provided between the second common pad 10 and the first GPS signal filter 4. A fourth common pad 12 is provided between the first GPS signal filter 4 and the first GPS signal processing module 5. Thus, a radio frequency circuit can meet the configuration requirements for supporting cellular communication and the configuration requirements for not supporting cellular communication, improving the compatibility of the radio frequency circuit. And in practical applications, only the radio frequency circuit needs to be laid out on a single PCB board, reducing the production cost and solving the problem that the existing manufacturing method requires the production of two sets of PCB boards, resulting in increased costs in aspects such as product production line control and PCB manufacturing fees at the board factory.

[0056] In a specific embodiment, the first common pad 9, the second common pad 10, the third common pad 11, and the fourth common pad 12 are each composed of 4 pads. Among them, 2 of the 4 pads are stacked together, jointly occupying the space of one pad to form a common welding end, and the other two pads respectively form the other two ends of the common pad. Among them, the common welding end is used to connect the remaining two ends of the common pad respectively to conduct different circuits. In the initial stage, the three ends of each common pad are not conducting with each other. During the PCB loading stage, according to the configuration requirements of the electronic device, the corresponding two ends among the three ends of the common pad can be loaded to conduct the corresponding circuit.

[0057] In an application example, the following will take the third common pad 11 and the fourth common pad 12 as examples to illustrate the loading of the present utility model.

[0058] In the PCB board, the circuits connecting the third common pad 11 with the second common pad 10 and the first GPS signal filter 4 are pre-drawn, and the circuits connecting the fourth common pad 12 with the third common pad 11 and the first GPS signal filter 4 are pre-drawn. Among them, the first end, the second end, and the third end of the third common pad are not conducting with each other, and the first end, the second end, and the third end of the fourth common pad are not conducting with each other.

[0059] Such as Figure 5As shown, the third common pad 11 is formed by the overlap of two horizontal pads and two vertical pads. Among them, the two pads at the overlapping part form the first end 111 (i.e., the common welding end) of the third common pad 11, and the other two pads respectively form the second end 112 and the third end 113 of the third common pad 11. The fourth common pad 12 is formed by the overlap of two horizontal pads. Among them, the two pads at the overlapping part form the second end 122 (i.e., the common welding end) of the fourth common pad 12, and the other two pads respectively form the first end 121 and the third end 123 of the fourth common pad 12. It can be understood that the overlapping method can be determined according to the actual PCB layout. The structures of the third pad 11 and the fourth pad 12 in this application example are only used as an example of one of them, and are not limited thereto. For example, the third common pad 11 can also be formed by the overlap of four horizontal pads.

[0060] When the electronic device supports cellular communication, solder materials are loaded onto the first end 111 and the second end 112 of the third common pad 11 to make the first end 111 and the second end 112 of the third common pad 11 conduct, and solder materials are loaded onto the second end 122 and the third end 123 of the fourth common pad 12 to make the second end 122 and the third end 123 of the fourth common pad 12 conduct. Thus, the path of the third end of the second common pad 10 - the first end 111 of the third common pad 11 - the second end 112 of the third common pad 11 - the third end 123 of the fourth common pad 12 - the second end 122 of the fourth common pad 12 is conducted. Therefore, the first GPS signal does not need to pass through the first GPS signal filter 4, and in actual production, the materials of the first GPS signal filter 4 can not be attached to the PCB board, further reducing the production cost. Among them, the solder materials can be solder paste or solder wire and other materials for soldering.

[0061] When the electronic device does not support cellular communication, solder materials are loaded onto the first end 111 and the third end 113 of the third common pad 11 to make the first end 111 and the third end 113 of the third common pad 11 conduct, and solder materials are loaded onto the first end 121 and the second end 122 of the fourth common pad 12 to make the first end 121 and the second end 122 of the fourth common pad 12 conduct. Thus, the path of the third end of the second common pad 10 - the first end 111 of the third common pad 11 - the third end 113 of the third common pad 11 - the first GPS signal filter 4 - the first end 121 of the fourth common pad 12 - the second end 122 of the fourth common pad 12 is conducted. Therefore, the first GPS signal passes through the first GPS signal filter 4. In actual production, the materials of the first GPS signal filter 4 are attached to the PCB board, while the cellular communication module 1 and the extractor 13 are not attached to the PCB board to further reduce the production cost.

[0062] It should be noted that the first end of the first common pad 9 is the common welding end, and the first end of the second common pad 10 is the common welding end. The conduction principle of the first common pad 9 and the second common pad 10 is the same as that of the third common pad 11 and the fourth common pad 12. For specific details, please refer to the above description and will not be elaborated here.

[0063] In another application example, both ends of the first common pad 9, the second common pad 10, the third common pad 11, and the fourth common pad 12 for loading and welding materials can also be used for welding capacitors to achieve impedance matching. Taking the third common pad 11 and the fourth common pad 12 as examples, the description is as follows.

[0064] When the electronic device supports cellular communication, capacitors and welding materials are loaded on the first end 111 and the second end 112 of the third common pad 11, so that the first end 111 and the second end 112 of the third common pad 11 are connected through the capacitor to achieve conduction. Capacitors and welding materials are loaded on the second end 122 and the third end 123 of the fourth common pad 12 and welded, so that the second end 122 and the third end 123 of the fourth common pad 12 are connected through the capacitor to achieve conduction.

[0065] When the electronic device does not support cellular communication, capacitors and welding materials are loaded on the first end 111 and the third end 113 of the third common pad 11, so that the first end 111 and the third end 113 of the third common pad 11 are connected through the capacitor to achieve conduction. Capacitors and welding materials are loaded on the first end 121 and the second end 122 of the fourth common pad 12, so that the first end 121 of the fourth common pad 12 is connected to the second end 122 through the capacitor to achieve conduction.

[0066] In another application example, both ends of the first common pad 9, the second common pad 10, the third common pad 11, and the fourth common pad 12 for loading and welding materials can also be used for welding resistors to achieve impedance matching. For the connection of the resistors, please refer to the connection of the above capacitors and will not be elaborated here.

[0067] In a specific embodiment, as Figure 2 shown, the cellular communication module 1 includes: a cellular module circuit 15, a cellular coupler 16, and a cellular test socket 17;

[0068] The cellular module circuit 15 is connected to the cellular coupler 16;

[0069] The cellular coupler 16 is connected to the cellular test socket 17.

[0070] It should be noted that the cellular test socket 17 is used to provide an interface to facilitate the connection of the cellular coupler 16 and the cellular module circuit 15 to the extractor 13, and facilitate the quick replacement of the cellular coupler 16 and the cellular module circuit 15. The cellular coupler 16 is used to couple radio frequency signals and plays a role in impedance matching.

[0071] In a specific embodiment, as Figure 2 shown, the first GPS signal processing module 5 includes: a first low-noise amplifier 18 and a first filter 19;

[0072] The first GPS signal filter 4 is connected to the first low-noise amplifier 18;

[0073] The first low-noise amplifier 18 is connected to the first filter 19;

[0074] The first filter 19 is connected to the GPS module 2.

[0075] It should be noted that the first low-noise amplifier 18 is used to amplify the first GPS signal filtered by the first GPS signal filter 4, and the first filter 19 is used to filter the amplified first GPS signal again to further filter out clutter.

[0076] In a specific embodiment, Figure 3 shown, the radio frequency circuit includes a second GPS signal processing module 6, a short-range wireless communication module 3, a combiner 14, and a second antenna 8; the GPS module 2 is connected to the second GPS signal processing module 6; the short-range wireless communication module 3 and the second GPS signal processing module 6 are respectively connected to the combiner 14; the combiner 14 is connected to the second antenna 8.

[0077] Specifically, the common end of the combiner 14 is connected to the second antenna 8. The second antenna 8 is used to receive and transmit the second GPS signal and the short-range wireless communication signal. The combiner 14 is used to combine the second GPS signal and the short-range wireless communication signal into one output signal, transmit the output signal to the second antenna 8, and is used to receive the signal transmitted by the second antenna 8 and distribute the received signal to the second GPS signal processing module 6 and the short-range wireless communication module 3. Short-range wireless communication refers to the data transmission and communication between devices within a relatively short distance range, which includes WIFI communication and BT communication. The second GPS signal processing module 6 is used to filter and amplify the second GPS signal and transmit the processed second GPS signal to the GPS module 2. Among them, the frequency bands of the second GPS signal and the first GPS signal are different.

[0078] Therefore, in this embodiment, the GPS module 2 is connected to the second GPS signal processing module 6. The second GPS signal processing module 6 and the short-range wireless communication module 3 are respectively connected to the combiner 14 and connected to the second antenna 8 through the combiner 14, so that both the GPS module 2 and the short-range wireless communication module 3 can transmit and receive signals through the second antenna 8, enabling the overall RF circuit to support multiple communication modes such as GPS dual-band, LTE, and short-range wireless communication, while saving PCB board space resources and further reducing production costs.

[0079] In a specific embodiment, as Figure 4 shown, the second GPS signal processing module 6 includes a second filter 20, a second low-noise amplifier 21, and a third filter 22;

[0080] The GPS module 2 is connected to the second filter 20;

[0081] The second filter 20 is connected to the second low-noise amplifier 21;

[0082] The second low-noise amplifier 21 is connected to the third filter 22;

[0083] The third filter 22 is connected to the combiner 14.

[0084] It should be noted that the second filter 20 is used to filter the second GPS signal. The second low-noise amplifier 21 is used to amplify the second GPS signal. The third filter 22 is used to filter the second GPS signal.

[0085] In a specific embodiment, as Figure 4 shown, the short-range wireless communication module 3 includes a wireless communication module circuit and a fourth filter 23;

[0086] The wireless communication module circuit is connected to the fourth filter 23;

[0087] The fourth filter 23 is connected to the combiner 14.

[0088] It should be noted that the fourth filter 23 is used to filter the short-range wireless communication signal.

[0089] In a specific embodiment, as Figure 4 shown, the wireless communication module circuit includes a WIFI / BT module 24.

[0090] It should be noted that the WIFI / BT module 24 is a communication module integrating Wi-Fi and Bluetooth functions.

[0091] In a specific embodiment, the first antenna 7 is used for transmitting and receiving the first GPS signal and the LTE signal, and the frequency band of the first GPS signal is the L1 band.

[0092] It should be noted that the center frequency of the L1 band is 1575.42 MHz, and the frequency range is generally 1575.42 MHz ± 1.023 MHz, which can be used to determine information such as position, speed, and time.

[0093] In a specific embodiment, the second GPS signal processing module 6 is used for filtering and amplifying the second GPS signal, and the frequency band of the second GPS signal is the L5 band.

[0094] It should be noted that the center frequency of the L5 band is 1176.45 MHz, and the frequency range is 1176.45 MHz ± 1.023 MHz. It has better propagation and penetration characteristics, can meet the requirements of higher-precision positioning, and is more adaptable to complex electromagnetic environments.

[0095] In a specific embodiment, the frequency band of the WIFI / BT module 24 includes 2.4G.

[0096] It should be noted that the WIFI / BT module 24 in the present utility model is a communication module integrating Wi-Fi and Bluetooth functions in the 2.4 GHz frequency band. In this embodiment, the fourth filter 23 is used for filtering the Wi-Fi signal and the Bluetooth signal in the 2.4 GHz frequency band. The fourth filter 23 is connected to the 2.4G port of the combiner 14.

[0097] In a specific embodiment, a first GPS signal test point is provided between the first antenna 7 and the first common pad 9. The first antenna 7 is connected to the first GPS signal test point and is connected to the first common pad 9 through the first GPS signal test point.

[0098] In a specific embodiment, the GPS module 2 includes a GPS chip.

[0099] In a specific embodiment, the metal middle frame of the electronic device can be used as the second antenna 8.

[0100] On the other hand, the present utility model provides an electronic device including the above radio frequency circuit.

[0101] It should be noted that the electronic device in the present utility model can be a terminal device such as a smart watch or a smart bracelet.

[0102] The radio frequency circuit and the electronic device provided by the present utility model support wireless systems such as GPS dual-band / WIFI / BT / LTE, can be compatible with the wireless performance of cellular and GPS, reduce production costs, and improve the competitiveness of products.

[0103] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0104] It should also be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0105] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0106] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A radio frequency circuit, characterized in that, Comprising: A cellular communication module, a GPS module, a first GPS signal filter, a first GPS signal processing module, a first antenna, a first common pad assembly, a second common pad assembly, an extractor; the first common pad assembly includes a first common pad and a second common pad; the second common pad assembly includes a third common pad and a fourth common pad; The first antenna is connected to the first end of the first common pad, and the second end of the first common pad is connected to the extractor; The other end of the extractor is respectively connected to the cellular communication module and the first end of the second common pad; the second end of the second common pad is for connecting to the third end of the first common pad; The third end of the second common pad is connected to the first end of the third common pad; The second end of the third common pad is for connecting to the third end of the fourth common pad; The third end of the third common pad is connected to one end of the first GPS signal filter; The other end of the first GPS signal filter is connected to the first end of the fourth common pad; The second end of the fourth common pad is connected to the first GPS signal processing module; The first GPS signal processing module is connected to the GPS module.

2. The circuit according to claim 1, wherein The cellular communication module includes: a cellular module circuit, a cellular coupler, a cellular test socket; The cellular module circuit is connected to the cellular coupler; The cellular coupler is connected to the cellular test socket.

3. The circuit according to claim 1, wherein The first GPS signal processing module includes: a first low-noise amplifier, a first filter; The first GPS signal filter is connected to the first low-noise amplifier; The first low-noise amplifier is connected to the first filter; The first filter is connected to the GPS module.

4. The circuit according to claim 1, wherein Comprising a second GPS signal processing module, a short-range wireless communication module, a combiner and a second antenna; The GPS module is connected to the second GPS signal processing module; The short-range wireless communication module and the second GPS signal processing module are respectively connected to the combiner; The combiner is connected to the second antenna.

5. The circuit according to claim 4, wherein The second GPS signal processing module includes a second filter, a second low-noise amplifier, a third filter; The GPS module is connected to the second filter; The second filter is connected to the second low-noise amplifier; The second low-noise amplifier is connected to the third filter; The third filter is connected to the combiner.

6. The circuit according to claim 4, wherein The short-range wireless communication module includes a wireless communication module circuit, a fourth filter; The wireless communication module circuit is connected to the fourth filter; The fourth filter is connected to the combiner.

7. The circuit according to claim 6, characterized in that, The wireless communication module circuit includes a WIFI / BT module.

8. The circuit according to claim 1, characterized in that, The first antenna is used for transmitting and receiving a first GPS signal and an LTE signal, and the frequency band of the first GPS signal is the L1 frequency band.

9. The circuit according to claim 4, wherein The second GPS signal processing module is used for filtering and amplifying a second GPS signal, and the frequency band of the second GPS signal is the L5 frequency band.

10. An electronic device, characterized in that, Comprising the radio frequency circuit according to any one of claims 1-9.

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