Dual-path multiplex coupler and electronic device

Abstract

The application provides a dual-path multiplex coupler and an electronic device. The dual-path multiplex coupler comprises a first switch module, a transmission line module, a second switch module and a switch control module. The first switch module, under the control of the switch control module, transmits a first part of the received radio frequency signal to the transmission line module, and couples a second part of the received radio frequency signal to a coupling output port. The transmission line module transmits the first part of the radio frequency signal to the second switch module. The second switch module, under the control of the switch control module, transmits the first part of the radio frequency signal to an antenna to radiate the radio frequency signal through the antenna. Compared with the prior art, the application multiplexes the coupling paths of radio frequency signals of different frequency bands, saves the number of directional couplers and transmission links, thereby saving space and realizing the miniaturization of mobile wireless communication devices.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency front end, and particularly relates to a dual-path multiplex coupler and an electronic device. BACKGROUND

[0002] When a mobile terminal such as a mobile phone is used for communication, the change of external environment will affect the communication quality of the mobile phone. For example, when the shell of the mobile terminal is held by the user's hand, or when the mobile terminal is in a building, an elevator car, or a vehicle, the human body or object around will change the input impedance of the antenna of the mobile terminal, which causes the reflection wave at the load end (antenna), and further causes a large power loss when the power is transmitted between the signal source (radio frequency transmitter) and the load.

[0003] To overcome the impedance mismatch of the antenna of the mobile terminal caused by the surrounding environment, the prior art usually sets an adaptive adjustment network and a directional coupler between the radio frequency transceiver chip and the antenna, reads the return loss value of the coupling end of the directional coupler by the processor, and compares it with the preset range. When the read return loss value is not within the preset range, the input impedance of the antenna is adjusted by the adaptive adjustment network to realize impedance matching.

[0004] However, for a mobile terminal with dual SIM dual standby, it usually has two transmission links, that is, two radio frequency transmission circuits and two directional couplers are needed to monitor the return loss values of the coupling ends of different transmission links, but this will excessively occupy the space of the printed circuit board, which is not conducive to saving space and material cost. SUMMARY

[0005] The present application provides a dual-path multiplex coupler and an electronic device, which can effectively reduce the number of components placed on the radio frequency front end printed circuit board, thereby reducing the size of the printed circuit board, and reducing the development cost and difficulty of the radio frequency front end.

[0006] In a first aspect, the application provides a dual-path multiplex coupler, comprising a first switch module, a transmission line module, a second switch module, and a switch control module, the transmission line module being connected to the first switch module and the second switch module respectively, and the switch control module being connected to the first switch module and the second switch module respectively, wherein: the switch control module is configured to control the on-off state of the first switch module and the second switch module; the first switch module is configured to, under the control of the switch control module, transmit a first part of a received target radio frequency signal to the transmission line module, and couple a second part of the received target radio frequency signal to a coupling output port, the target radio frequency signal being any one of at least two frequency bands; the transmission line module is configured to transmit the first part of the radio frequency signal to the second switch module; and the second switch module is configured to, under the control of the switch control module, transmit the first part of the radio frequency signal to an antenna to radiate the target radio frequency signal through the antenna.

[0007] In the dual-path multiplex coupler, the first switch module, the transmission line module, the second switch module, and the switch control module are provided, the first switch module, under the control of the switch control module, transmits a first part of a received target radio frequency signal to the transmission line module, and couples a second part of the received target radio frequency signal to a coupling output port; the transmission line module transmits the first part of the radio frequency signal to the second switch module; and the second switch module, under the control of the switch control module, transmits the first part of the radio frequency signal to an antenna to radiate the target radio frequency signal through the antenna. Compared with the prior art, the application transmits any one of the received frequency bands through the transmission line module, multiplexes the coupling paths of the radio frequency signals of different frequency bands, saves a certain number of directional couplers and transmission links, thereby saving space and realizing miniaturization of mobile wireless communication equipment.

[0008] In one embodiment, the first switch module includes a first switch and a second switch, and the transmission line module includes a first transmission line, a second transmission line, and a coupling component connected to the first transmission line and the second transmission line respectively, wherein the switch control module is connected to the first switch and the second switch respectively; the first transmission line is connected to the first switch and the second switch module respectively; the second transmission line is connected to the second switch and the second switch module respectively; the first switch and the second switch are connected to different coupling output ports respectively, the first switch and the second switch receive radio frequency signals of different frequency bands respectively, and the switch control module controls the on-off state of the first switch and the second switch, so that the first switch or the second switch transmits the first part of the radio frequency signal to the first transmission line or the second transmission line in a connected state and transmits the second part of the radio frequency signal to the target coupling output port in a connected state when the target radio frequency signal is received.

[0009] In one embodiment, the second switch module includes a third switch and a fourth switch, wherein: the switch control module is connected to the third switch and the fourth switch respectively; the first transmission line is connected to the first switch and the third switch respectively; the second transmission line is connected to the second switch and the fourth switch respectively; the third switch and the fourth switch are connected to different antennas respectively, and the switch control module controls the on-off state of the third switch and the fourth switch, so that the third switch or the fourth switch transmits the first part of the radio frequency signal to the target antenna in a connected state when the first part of the radio frequency signal is received.

[0010] In one embodiment, the third switch and the fourth switch are connected to antennas with different operating frequency bands respectively, and the switch control module is configured to: control one of the first switch and the second switch to be in a conductive state according to the operating frequency band of the received target radio frequency signal, and control one of the third switch and the fourth switch to be in the conductive state, so that the target radio frequency signal is transmitted through the target antenna, which is the antenna connected to the third switch and the fourth switch respectively and matched with the operating frequency band of the target radio frequency signal.

[0011] In one embodiment, the dual-path multiplexing coupler further includes a band-pass filter module connected to the first switch module and configured to filter the received initial target radio frequency signal to obtain the target radio frequency signal, wherein the band-pass filter module includes a first band-pass filter connected to the first switch and a second band-pass filter connected to the second switch.

[0012] In one implementation, the dual-path multiplexing coupler further comprises a resistor module connected with the second switch module and the ground, respectively, wherein the resistor module comprises a first resistor and a second resistor, the first resistor is connected with the third switch, and the second resistor is connected with the fourth switch.

[0013] In one implementation, the first transmission line and the second transmission line are transmission lines with an impedance value of 50 ohms.

[0014] In one implementation, the first switch, the second switch, the third switch, and the fourth switch are single-pole double-throw switches.

[0015] In one implementation, the coupling component is a coupling capacitor or a coupling inductor.

[0016] In a second aspect, the present application provides an electronic device comprising the dual-path multiplexing coupler.

[0017] It should be understood that the second aspect of the embodiments of the present application is consistent with the technical solutions of the first aspect of the embodiments of the present application, and the beneficial effects obtained by each aspect and the corresponding feasible implementation manner are similar, and will not be repeated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0021] Figure 4 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0022] Figure 5 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0023] Figure 6 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0024] Figure 7 is a structural schematic diagram of a dual-path multiplexing coupler provided by an embodiment of the present application;

[0025] Figure 8A structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be described below with reference to the drawings.

[0027] In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same function and role are distinguished by using "first", "second", etc. For example, the first instruction and the second instruction are used to distinguish different user instructions, and do not limit the order. Those skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not necessarily mean different.

[0028] It should be noted that in the present application, "exemplarily" or "for example" and the like are used to represent as an example, illustration or description. Any embodiment or design scheme described as "exemplarily" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "exemplarily" or "for example" and the like is intended to present the relevant concept in a specific manner.

[0029] In addition, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents that the associated objects before and after are in an "or" relationship. "At least one of the following" or the like means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b and c can represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0030] The embodiment of the present application provides a dual-path multiplex coupler, which can be applied to an electronic device, the electronic device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a smart screen, an artificial intelligence (AI) sound, a headset, a terminal in industrial control, a terminal in self-driving, a terminal in remote medical surgery, a terminal in a smart grid, a terminal in transportation safety, a terminal in a smart city, a terminal in a smart home, a personal digital assistant (PDA), and the like, and the present application is not limited thereto.

[0031] The antenna can be used to transmit or receive electromagnetic waves in the electronic device, the same antenna can be used as a transmitting antenna and a receiving antenna, and the characteristic parameters of the antenna as the transmitting antenna and the receiving antenna are the same, that is, the antenna has the reciprocity characteristic.

[0032] Exemplarily, Figure 1 The system architecture schematic diagram of the electronic device provided by the embodiment of the present application is shown in the figure. Figure 1 As shown in the figure, the electronic device includes a processor 110, a memory 120, a transceiver 130, a display unit 140, an input unit 150, a sensor 160, an audio circuit 170, and a power module 180, and the like.

[0033] The processor 110 is the control center of the electronic device, connects all parts of the electronic device through various interfaces and lines, executes various functions of the electronic device and processes data by running or executing the software program and / or module stored in the memory 120 and calling the data stored in the memory 120, thereby overall monitoring the electronic device. Optionally, the processor 110 can include one or more processing units; optionally, the processor 110 can integrate an application processor, which mainly processes operation devices, user interfaces and application programs, and of course, can also include other processors, which are not listed here.

[0034] The memory 120 can be used to store software programs and modules, and the processor 110 executes various function applications and data processing of the electronic device by running the software programs and modules stored in the memory 120. The memory 120 mainly includes a program storage area and a data storage area, wherein the program storage area can store application programs required by the operation device, at least one function (such as a sound playing function, an image playing function, etc.), and the like; the data storage area can store data created according to the use of the electronic device (such as audio data, a telephone book, etc.), and the like. In addition, the memory 120 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0035] The transceiver 130 can provide wireless communication solutions applied on the electronic device, including wireless local area networks (WLAN) (for example, wireless fidelity (Wi-Fi) network), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), and the like. The transceiver 130 can be one or more devices integrated with at least one communication processing module, for example, an antenna and a baseband processor integrated transceiver 130, or an antenna and a modem processor integrated transceiver 130, and the like, which are not limited herein.

[0036] The display unit 140 can be used to display information input by the user or information provided to the user and various menus of the electronic device. The display unit 140 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), and the like, which are not limited herein.

[0037] The input unit 150 can be used to receive inputted digital or character information, and to generate key signal inputs related to user settings of the electronic device and function control. Specifically, the input unit 150 can collect operations by a user thereon or adjacent thereto, and drive a corresponding connection device according to a pre-set program. In addition, the input unit 150 can include a touch panel, which can be implemented using various types such as a resistive type, a capacitive type, an infrared type, and a surface acoustic wave type. In addition to the touch panel, the input unit 150 can include other input devices. Specifically, the other input devices can include one or more of, but are not limited to, function keys (such as a volume control button, a switch button, etc.), a trackball, a jog wheel, etc.

[0038] The electronic device can further include at least one sensor 160, such as a gyro sensor, a motion sensor, and other sensors. The motion sensor can include an acceleration sensor for detecting the magnitude of acceleration in each direction, and can detect the magnitude and direction of gravity when at rest, and can be used for applications that identify the posture of the electronic device, such as landscape / portrait screen switching, related games, magnetometer posture calibration, etc. The electronic device can further include a manometer, a barometer, a hygrometer, a thermometer, an infrared sensor, a fingerprint sensor, and other sensors, which will not be described herein.

[0039] The audio circuit 170 can include a speaker and a microphone, and can provide an audio interface between a user and the electronic device. The audio circuit 170 can convert received audio data into an electrical signal, and transmit the electrical signal to the speaker, which converts the electrical signal into a sound signal and outputs the sound signal. On the other hand, the microphone collects a sound signal, converts the sound signal into an electrical signal, and outputs the electrical signal to the audio circuit 170, which converts the electrical signal into audio data. The audio data is processed by the processor 110, and is output to another electronic device via the video circuit, or is output to the memory 120 for further processing.

[0040] The electronic device further includes a power supply module 180 for supplying power to each component. Optionally, the power supply module 180 can be logically connected to the processor 110 through a power management device, so that the power management device can manage charging, discharging, and power consumption management, etc.

[0041] Although not shown, the electronic device can further include a camera. Optionally, the camera can be positioned on the front or the back of the electronic device, and the embodiments of the present application do not limit the camera position.

[0042] It can be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device can include more or fewer components than those illustrated, or can combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0043] In order to make the purpose, technical scheme of the present application more clear and intuitive, the dual-path multiplexing coupler provided by the embodiments of the present application will be described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0044] Figure 2 The structural schematic diagram of the dual-path multiplexing coupler provided by an embodiment of the present application. The method can be applied to the electronic device shown above, in addition to which it can also be applied to other scenarios, which is not limited by the embodiments of the present application. Figure 1 The electronic device shown above can include the dual-path multiplexing coupler, in addition to which it can also include other components, which is not limited by the embodiments of the present application.

[0045] As shown in Figure 2 The dual-path multiplexing coupler can include a first switch module 20, a transmission line module 21, a second switch module 22, and a switch control module 23, the transmission line module 21 is connected with the first switch module 20 and the second switch module 22 respectively, the switch control module 23 is connected with the first switch module 20 and the second switch module 22 respectively, wherein:

[0046] The switch control module 23 is configured to control the on-off state of the first switch module 20 and the second switch module 22.

[0047] The first switch module 20 is configured to, under the control of the switch control module 23, transmit a first part of the received target radio frequency signal to the transmission line module 21, and couple a second part of the received target radio frequency signal to a coupling output port, the target radio frequency signal being any one of at least two frequency bands of radio frequency signals.

[0048] The transmission line module 21 is configured to transmit the first part of the radio frequency signal to the second switch module 22.

[0049] The second switch module 22 is configured to, under the control of the switch control module 23, transmit the first part of the radio frequency signal to an antenna to radiate the target radio frequency signal through the antenna.

[0050] In the implementation process, the first switch module 20 is in the off state when there is no target radio frequency signal input, after the radio frequency front-end device inputs the target radio frequency signal into the first switch module 20 of the above-mentioned dual-path multiplexing coupler, the switch control module 23 controls the first switch module 20 to be turned on, a part of the target radio frequency signal can be coupled to the coupling output port, and output to the radio frequency front-end device through the coupling output port for power detection, so that the radio frequency front-end device adjusts the power of the target radio frequency signal; another part of the target radio frequency signal is transmitted to the second switch module 22 through the transmission line module 21, and the switch control module 23 controls the second switch module 22 to be turned on and connected with the antenna, so that another part of the target radio frequency signal is radiated to the outside through the antenna.

[0051] Optionally, the coupling output port is connected with the radio frequency front-end device, and is used for outputting the second part of the radio frequency signal to the radio frequency front-end device for power detection, and the first part of the radio frequency signal and the second part of the radio frequency signal can be equal-amplitude in-phase power signals, so that the second part of the radio frequency signal fed back to the radio frequency front-end device can reflect the power of the first part of the radio frequency signal, that is, the first switch module 20 can proportionally divide a microwave power into several microwave powers. In the embodiment of the application, the first switch module 20 has two output ports S1 and S2, and the two output ports S1 and S2 can output equal-amplitude in-phase power signals.

[0052] Optionally, the first switch module 20 and the second switch module 22 can be the same type of switch module, or can be different types of switch modules, which are set by those skilled in the art according to actual conditions, and the embodiment of the application does not limit.

[0053] Optionally, the above-mentioned dual-path multiplexing coupler can further include a power amplifier, a matching network and a band-pass filter, which are connected in sequence, the band-pass filter is connected with the first switch module 20, the power amplifier is connected with the input port of the above-mentioned dual-path multiplexing coupler, and is used for amplifying the power of the received target radio frequency signal, the matching network is used to avoid reflection and loss caused by impedance mismatch on the radio frequency path, and the band-pass filter is used to filter the target radio frequency signal.

[0054] The aforementioned dual-path multiplexing coupler includes a first switch module 20, a transmission line module 21, a second switch module 22, and a switch control module 23. Under the control of the switch control module 23, the first switch module 20 transmits a first portion of the received target RF signal to the transmission line module 21 and couples a second portion of the received target RF signal to the coupling output port. The transmission line module 21 transmits the first portion of the RF signal to the second switch module 22. Under the control of the switch control module 23, the second switch module 22 transmits the first portion of the RF signal to the antenna to radiate the target RF signal. Compared to existing technologies, this application transmits any received RF signal in any frequency band through the transmission line module 21, multiplexing the coupling paths of RF signals in different frequency bands. This saves a certain number of directional couplers and transmission links, thereby saving space and achieving miniaturization of mobile wireless communication devices.

[0055] Figure 3 This is a schematic diagram of a dual-path multiplexing coupler provided in one embodiment of this application. Figure 3 As shown, based on Figure 2 The structure shown above, the first switch module 20 may include a first switch 201 and a second switch 202, and the transmission line module 21 includes a first transmission line 211, a second transmission line 212, and coupling components 213 respectively connected to the first transmission line 211 and the second transmission line 212, wherein:

[0056] The switch control module 23 is connected to the first switch 201 and the second switch 202 respectively;

[0057] The first transmission line 211 is connected to the first switch 201 and the second switch module 22 respectively;

[0058] The second transmission line 212 is connected to the second switch 202 and the second switch module 22 respectively;

[0059] The first switch 201 and the second switch 202 are respectively connected to different coupling output ports. The first switch 201 and the second switch 202 respectively receive radio frequency signals of different frequency bands. The switch control module 23 controls the on / off state of the first switch 201 and the second switch 202 so that when the first switch 201 or the second switch 202 receives the target radio frequency signal, it transmits the first part of the radio frequency signal to the first transmission line 211 or the second transmission line 212 in the connected state, and transmits the second part of the radio frequency signal to the target coupling output port in the connected state.

[0060] In the implementation process, the first frequency band radio frequency signal is input through the first switch 201, and the second frequency band radio frequency signal is input through the second switch 202. When the first frequency band radio frequency signal is input through the first switch 201, the switch control module 23 controls the first switch 201 to be turned on, so that the first part of the first frequency band radio frequency signal is transmitted to the first transmission line 211, and the first transmission line 211 transmits the first part of the first frequency band radio frequency signal to the second switch module 22, so that the first part of the radio frequency signal is radiated to the outside through the antenna, and the second part of the first frequency band radio frequency signal is transmitted to the second transmission line 212 through the coupling element 213, and the second transmission line 212 transmits the second part of the first frequency band radio frequency signal to the coupling output connected with the second switch 202, so that the second part of the first frequency band radio frequency signal is output to the radio frequency front-end device through the coupling output. When the second frequency band radio frequency signal is input through the second switch 202, the switch control module 23 controls the second switch 202 to be turned on, so that the first part of the second frequency band radio frequency signal is transmitted to the second transmission line 212, and the second transmission line 212 transmits the first part of the second frequency band radio frequency signal to the second switch module 22, so that the first part of the radio frequency signal is radiated to the outside through the antenna, and the second part of the second frequency band radio frequency signal is transmitted to the first transmission line 211 through the coupling element 213, and the first transmission line 211 transmits the second part of the first frequency band radio frequency signal to the coupling output connected with the first switch 201, so that the second part of the second frequency band radio frequency signal is output to the radio frequency front-end device through the coupling output.

[0061] It should be understood that, since the first transmission line 211 and the second transmission line 212 are connected with the coupling element 213, part of the received target radio frequency signal can be transmitted along the transmission line of the main path, and the other part is coupled to the other transmission line through the coupling element 213 between the two transmission lines. The coupling element 213 can select a coupler with different coupling coefficients according to different working frequency bands, and the coupling coefficient C is calculated as follows:

[0062]

[0063] For a parallel coupler of λ / 4 (one-quarter wavelength), at the center frequency:

[0064] θ=Π / 2

[0065] Then:

[0066] S 31 =k0,C=-20lgk0

[0067] Optionally, the first switch 201 and the second switch 202 can be the same type of switch or different types of switch, which is set by a person skilled in the art according to actual conditions, and the embodiments of the present application do not make any limitation.

[0068] Preferably, the coupling component 213 can be a coupling capacitor or a coupling inductor.

[0069] Preferably, the first switch 201 and the second switch 202 can be single-pole double-throw switches.

[0070] Preferably, the first transmission line 211 and the second transmission line 212 can be transmission lines with an impedance value of 50 ohms.

[0071] Compared with a traditional coupler, the embodiments of the present application can shorten the length of the two transmission lines to less than one quarter of a wavelength due to the addition of the coupling component 213 between the two transmission lines, so that the overall structure is more miniaturized.

[0072] Figure 4 A structure diagram of a dual-path multiplexing coupler provided by an embodiment of the present application is shown in FIG. 2. As shown in FIG. 2, based on the structure shown in FIG. 1, the second switch module 22 can include a third switch 221 and a fourth switch 222, wherein: Figure 4 Figure 3 The switch control module 23 is connected with the third switch 221 and the fourth switch 222, respectively;

[0073] The first transmission line 211 is connected with the first switch 201 and the third switch 221, respectively;

[0074] The second transmission line 212 is connected with the second switch 202 and the fourth switch 222, respectively;

[0075] The third switch 221 and the fourth switch 222 are connected with different antennas, respectively, and the switch control module 23 controls the on-off state of the third switch 221 and the fourth switch 222, so that the third switch 221 or the fourth switch 222 transmits the first part of the radio frequency signal to the target antenna in the connected state when receiving the first part of the radio frequency signal.

[0076] The third switch 221 and the fourth switch 222 are connected with different antennas, respectively, and the switch control module 23 controls the on-off state of the third switch 221 and the fourth switch 222, so that the third switch 221 or the fourth switch 222 transmits the first part of the radio frequency signal to the target antenna in the connected state when receiving the first part of the radio frequency signal.

[0077] ​Optionally, the antenna connected with the third switch 221 and the antenna connected with the fourth switch 222 can be antennas of different working frequency bands, and the switch control module 23 can control one of the first switch 201 and the second switch 202 to be in a conductive state, and control one of the third switch 221 and the fourth switch 222 to be in a conductive state, according to the working frequency band of the target radio frequency signal, so that the target radio frequency signal is transmitted through the target antenna, the target antenna being the antenna connected with the third switch 221 and the fourth switch 222 respectively and matched with the working frequency band of the target radio frequency signal.

[0078] Exemplarily, when the first frequency band radio frequency signal is input through the first switch 201, it is determined that the working frequency band of the first frequency band radio frequency signal is matched with the working frequency band of the antenna connected with the third switch 221, so that the switch control module 23 controls the first switch 201 to be in a conductive state with the first transmission line 211, controls the third switch 221 to be in a conductive state with the antenna connected with the third switch 221, and controls the second switch 202 to be in a conductive state with the coupling output connected with the second switch 202, so that the first part of the first frequency band radio frequency signal is transmitted to the antenna connected with the third switch 221 through the first transmission line 211, and the second part of the first frequency band radio frequency signal is transmitted to the second transmission line 212 through the first transmission line 211.

[0079] Optionally, the third switch 221 and the fourth switch 222 can be the same type of switch or different types of switch, which is set by those skilled in the art according to the actual situation, and the embodiments of the present application are not limited.

[0080] Preferably, the third switch 221 and the fourth switch 222 can be single-pole double-throw switches.

[0081] It should be understood that the third switch 221 and the fourth switch 222 are respectively connected with different antennas, so that the above-mentioned dual-path multiplexing coupler can select different antennas to radiate according to different frequency bands of the received radio frequency signals, thereby improving the radio frequency performance.

[0082] In the above-mentioned dual-path multiplexing coupler, the third switch 221 and the fourth switch 222 are respectively connected with different antennas, so as to select different antennas to radiate according to different frequency bands of the received radio frequency signals, thereby improving the radio frequency performance.

[0083] Figure 5 The structure diagram of the dual-path multiplexing coupler provided by an embodiment of the present application is shown in the figure. Figure 5 As shown in the figure, based on Figure 4The structure shown above, the dual-path multiplexing coupler, may further include a bandpass filter module. The bandpass filter module is connected to the first switch module 20 and is used to filter the received initial target RF signal to obtain the target RF signal, wherein:

[0084] The bandpass filter module includes a first bandpass filter 231 and a second bandpass filter 232. The first bandpass filter 231 is connected to the first switch 201, and the second bandpass filter 232 is connected to the second switch 202.

[0085] It should be understood that the first bandpass filter 231 is used to filter the first frequency band radio frequency signal received by the first switch 201, and the second bandpass filter 232 is used to filter the second frequency band radio frequency signal received by the second switch 202. That is, the first bandpass filter 231 and the second bandpass filter 232 operate in different operating frequency bands.

[0086] Optionally, the specific operating frequency bands of the first bandpass filter 231 and the second bandpass filter 232 can be set according to the operating frequency bands of the antennas connected to the third switch 221 and the fourth switch 222 respectively, so as to conform to the radio frequency performance of the antennas.

[0087] The aforementioned dual-path multiplexing coupler, by setting a first bandpass filter 231 and a second bandpass filter 232, connects the first bandpass filter 231 to the first switch 201 and the second bandpass filter 232 to the second switch 202, so that the radio frequency signals transmitted to the first switch 201 and the second switch 202 are more in line with the radio frequency performance of the antenna.

[0088] Figure 6 This is a schematic diagram of a dual-path multiplexing coupler provided in one embodiment of this application. Figure 5 As shown, based on Figure 5 The structure shown above, the dual-path multiplexing coupler, may further include a resistor module, which is connected to the second switch module 22 and ground, respectively, wherein:

[0089] The resistor module includes a first resistor 241 and a second resistor 242. The first resistor 241 is connected to a third switch 221, and the second resistor 242 is connected to a fourth switch 222. The other end of the first resistor 241 is connected to ground, and the other end of the second resistor 242 is connected to ground.

[0090] It should be understood that the resistor module described above can attenuate the second part of the target RF signal transmitted via the first transmission line 211 to the second transmission line 212 and then conduct it to ground, thereby reducing the loss and attenuation of the RF signal.

[0091] In the above dual-path multiplexing coupler, by setting a resistor module, the second part of the target RF signal transmitted from the first transmission line 211 to the second transmission line 212 can be attenuated and grounded to reduce the loss and attenuation of the RF signal.

[0092] Figure 7 A schematic diagram of a dual-path multiplexing coupler provided in an embodiment of this application is shown below. Figure 7 As shown, the dual-band multiplexing coupler includes a first-band power amplifier 10, a second-band power amplifier 20, a first matching network 11, a second matching network 21, a first-band bandpass filter 12, a second-band bandpass filter 22, a first single-pole double-throw switch 13, a second single-pole double-throw switch 23, a first 50-ohm transmission line 14, a second 50-ohm transmission line 24, a third single-pole double-throw switch 15, a fourth single-pole double-throw switch 25, a first-band antenna 16, a second-band antenna 26, a first resistor 17, a second resistor 27, a first coupling output port 18, a second coupling output port 28, a housing 30, a coupling capacitor 40, a switch control module 50, and a switch module control port 60.

[0093] The output of the first band power amplifier 10 is connected to one end of the first matching network 11, and the other end of the first matching network 11 is connected to the input of the first band bandpass filter 12. The output of the first band bandpass filter 12 is connected to one double-throw end of the first single-pole double-throw switch 13. The other double-throw end of the first single-pole double-throw switch 13 is the first coupling output port 18. One single-pole end of the first single-pole double-throw switch 13 is connected to one end of the first 50-ohm transmission line 14. The other end of the first 50-ohm transmission line 14 is connected to one single-pole end of the third single-pole double-throw switch 15. One double-throw end of the third single-pole double-throw switch 15 is connected to one end of the first resistor 17. The other end of the first resistor 17 is grounded. The other double-throw end of the third single-pole double-throw switch 15 is connected to the first band antenna 16.

[0094] The output of the second-band power amplifier 20 is connected to one end of the second matching network 21, and the other end of the second matching network 21 is connected to the input of the second-band bandpass filter 22. The output of the second-band bandpass filter 22 is connected to one double-throw end of the second single-pole double-throw switch 23, and the other double-throw end of the second single-pole double-throw switch 23 is the second coupling output port 28. One single-pole end of the second single-pole double-throw switch 23 is connected to one end of the second 50-ohm transmission line 24, and the other end of the second 50-ohm transmission line 24 is connected to one single-pole end of the fourth single-pole double-throw switch 25. One double-throw end of the fourth single-pole double-throw switch 25 is connected to one end of the second resistor 27, and the other end of the second resistor 27 is grounded. The other double-throw end of the fourth single-pole double-throw switch 25 is connected to the second-band antenna 26.

[0095] The first 50-ohm transmission line 14 and the second 50-ohm transmission line 24 are connected by a coupling capacitor 40.

[0096] The first single-pole double-throw switch 13, the second single-pole double-throw switch 23, the third single-pole double-throw switch 15, and the fourth single-pole double-throw switch 25 are connected to the control pins of the switch control module 50, which is connected to the switch module control port 60.

[0097] During implementation, the modulated analog signal is transmitted from the front-end RF transceiver to the first band power amplifier 10 and the second band power amplifier 20 from two output ports respectively. The signal amplified by the first band power amplifier 10 will pass through the first matching network 11 to optimize the output impedance to 50 ohms, and then pass through the first band bandpass filter 12 inside the dual-path multiplexing coupler. The signal amplified by the second band power amplifier 20 will pass through the second matching network 21 and then pass through the second band bandpass filter 22 inside the dual-path multiplexing coupler. At this time, when the first frequency band is transmitting, the switch control module 50 starts to control the first single-pole double-throw switch 13 to close and connect to the first 50-ohm transmission line 14, and outputs the radio frequency power signal to the third single-pole double-throw switch 15 through the first 50-ohm transmission line 14. At this time, the second single-pole double-throw switch 23 is controlled by the switch control module 50 to conduct with the second coupling output port 28, and a part of the power is coupled out to the front-end radio frequency transceiver for power detection; the third single-pole double-throw switch 15 is controlled by the switch control module 50 to connect to the first frequency band antenna 16, and transmits the signal into free space by antenna radiation; at the same time, the fourth single-pole double-throw switch 25 is connected in series with the second resistor 27 and then grounded. When the second frequency band is transmitting, the switch control module 50 starts to control the second single-pole double-throw switch 23 to close and connect it to the second 50-ohm transmission line 24, and outputs the radio frequency power signal to the fourth single-pole double-throw switch 25 through the second 50-ohm transmission line 24. At this time, the first single-pole double-throw switch 13 is controlled by the switch control module 50 to be turned on with the first coupling output port 18, and a part of the power is coupled out to the front-end radio frequency transceiver for power detection. The fourth single-pole double-throw switch 25 is controlled by the switch control module 50 to connect to the second frequency band antenna 26, and transmits the signal into free space by antenna radiation. At the same time, the third single-pole double-throw switch 15 is connected in series with the first resistor 17 and then grounded.

[0098] Therefore, the feedback power detection signal output from the coupling output port of the dual-channel multiplexing coupler is a power proportional to the transmitted positive power wave, and the feedback power detection signal can be used as an RF transmit power indication signal. This RF transmit power indication signal can be used by the front-end RF transceiver to determine the transmit power provided by the first band power amplifier 10 and the second band power amplifier 20. This transmit power can be used to adjust the transmit power control signal to achieve the required transmit power to the first band antenna 16 and the second band antenna 26.

[0099] It should also be understood that the various embodiments described above can be coupled to each other, and this application does not limit this. Furthermore, the sequence number of each process does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0100] The term "module" can refer to application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or group processors) and memory for executing one or more software or firmware programs, integrated logic circuits, and / or other suitable components that support the described functions.

[0101] The aforementioned electronic device is equipped with the corresponding functions performed by each module in the aforementioned dual-path multiplexing coupler; these functions can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the aforementioned functions.

[0102] Figure 8 This is a structural schematic diagram of an electronic device provided for another embodiment of this application. Figure 8 The apparatus shown can be used to perform the method of any of the foregoing embodiments.

[0103] like Figure 8 As shown, the electronic device 800 of this embodiment includes: a memory 801, a processor 802, a communication interface 803, and a bus 804. The memory 801, processor 802, and communication interface 803 are interconnected via the bus 804.

[0104] The memory 801 may be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 801 may store a program, and when the program stored in the memory 801 is executed by the processor 802, the processor 802 performs the various steps of the method shown in the above embodiments.

[0105] The processor 802 can be a general purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, for executing programs to implement the various methods of embodiments of the present application.

[0106] The processor 802 can also be an integrated circuit chip having a signal processing capability. In the implementation process, the various steps of the methods of embodiments of the present application can be completed by the integrated logic circuit of the hardware or the instructions in the form of software in the processor 802.

[0107] The processor 802 described above can also be a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The various methods, steps and logic block diagrams disclosed in embodiments of the present application can be implemented or executed. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0108] The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory 801, and the processor 802 reads the information in the memory 801, and combines the hardware to complete the functions required to be executed by the units included in the device of the present application.

[0109] The communication interface 803 can use, but not limited to, a transceiver type transceiver to realize the communication between the electronic device 800 and other devices or communication networks.

[0110] The bus 804 can include a path for transmitting information between various components (for example, the memory 801, the processor 802, the communication interface 803) of the electronic device 800.

[0111] It should be understood that the electronic device shown in embodiments of the present application can be an electronic device, or can also be an integrated device assembled by multiple electronic devices.

[0112] It should be understood that the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0113] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0114] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0115] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0116] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0117] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0118] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0119] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dual multiplexed coupler, characterized by, The dual-path multiplexing coupler comprises a first switch module, a transmission line module, a second switch module and a switch control module, the transmission line module is connected with the first switch module and the second switch module respectively, and the switch control module is connected with the first switch module and the second switch module respectively, wherein: The switch control module is configured to control the on-off state of the first switch module and the second switch module. The first switch module is configured to, under the control of the switch control module, transmit a first part of the received target radio frequency signal to the transmission line module, and couple a second part of the received target radio frequency signal to a coupling output port, the target radio frequency signal being any one of at least two frequency bands of radio frequency signals. The transmission line module is configured to transmit the first part of the radio frequency signal to the second switch module. The second switch module is configured to, under the control of the switch control module, transmit the first part of the radio frequency signal to an antenna to radiate the target radio frequency signal through the antenna. The first switch module comprises a first switch and a second switch, and the transmission line module comprises a first transmission line, a second transmission line and a coupling component connected with the first transmission line and the second transmission line respectively, wherein: The switch control module is connected with the first switch and the second switch respectively. The first transmission line is connected with the first switch and the second switch module respectively. The second transmission line is connected with the second switch and the second switch module respectively. The first switch and the second switch are connected with different coupling output ports respectively, the first switch and the second switch receive radio frequency signals of different frequency bands respectively, and the switch control module controls the on-off state of the first switch and the second switch, so that the first switch or the second switch transmits the first part of the radio frequency signal to the first transmission line or the second transmission line in the connected state when receiving the target radio frequency signal, and transmits the second part of the radio frequency signal to the target coupling output port in the connected state.

2. The dual multiplexing coupler of claim 1, wherein, The second switch module comprises a third switch and a fourth switch, wherein: The switch control module is connected with the third switch and the fourth switch respectively. The first transmission line is connected with the first switch and the third switch respectively. The second transmission line is connected with the second switch and the fourth switch respectively. The third switch and the fourth switch are connected with different antennas respectively, and the switch control module controls the on-off state of the third switch and the fourth switch, so that the third switch or the fourth switch transmits the first part of the radio frequency signal to the target antenna in the connected state when receiving the first part of the radio frequency signal.

3. The dual multiplexing coupler of claim 2, wherein, The third switch and the fourth switch are connected with antennas of different working frequency bands respectively, and the switch control module is configured to: According to the operating frequency band of the received target radio frequency signal, one of the first switch and the second switch is controlled to be in a conductive state, and one of the third switch and the fourth switch is controlled to be in the conductive state, so that the target radio frequency signal is transmitted through the target antenna, the target antenna being an antenna matched with the operating frequency band of the target radio frequency signal among antennas connected with the third switch and the fourth switch respectively.

4. The dual multiplexing coupler of claim 3, wherein, The dual-path multiplexing coupler further comprises a band-pass filter module connected with the first switch module, for filtering the received initial target radio frequency signal to obtain the target radio frequency signal, wherein: The band-pass filter module comprises a first band-pass filter connected with the first switch and a second band-pass filter connected with the second switch.

5. The dual multiplexing coupler of claim 4, wherein, The dual-path multiplexing coupler further comprises a resistor module connected with the second switch module and the ground respectively, wherein: The resistor module comprises a first resistor connected with the third switch and a second resistor connected with the fourth switch.

6. The dual multiplexing coupler of any of claims 1-5, wherein, The first transmission line and the second transmission line are transmission lines with an impedance value of 50 ohms.

7. The dual multiplexing coupler of any of claims 2-5, wherein, The first switch, the second switch, the third switch and the fourth switch are single-pole double-throw switches.

8. The dual multiplexing coupler of any one of claims 1-5, wherein, The coupling component is a coupling capacitor or a coupling inductor.

9. An electronic device, comprising: The dual-path multiplexing coupler as claimed in any one of claims 1 to 8.

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