CN117294325A

CN117294325A - Signal transmission circuit, intelligent terminal, signal transmission method and storage medium

Info

Publication number: CN117294325A
Application number: CN202210678151.7A
Authority: CN
Inventors: 潘志浪
Original assignee: Shenzhen Taihengnuo Technology Co ltd
Current assignee: Shenzhen Taihengnuo Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-12-26

Abstract

The application provides a signal transmission circuit, an intelligent terminal, a signal transmission method and a storage medium, wherein the signal transmission method comprises the following steps: the controller selects a corresponding third target duplexer from the first duplexer group in a second working mode, controls the third target duplexer to be in a transmitting working state, and controls the corresponding first switch to selectively connect the common end of the third target duplexer with the corresponding second transmitting end; and selecting a corresponding fourth target duplexer in the second duplexer group, controlling the fourth target duplexer to be in a receiving working state, and controlling the corresponding second switch to selectively connect the public end of the fourth target duplexer to the corresponding second receiving end. According to the frequency band duplexer, the filter and the switch are added to form a new frequency band duplexer, and the additional duplexer is not needed, so that the cost can be saved.

Description

Signal transmission circuit, intelligent terminal, signal transmission method and storage medium

Technical Field

The application relates to the technical field of circuits, in particular to a signal transmission circuit, an intelligent terminal, a signal transmission method and a storage medium.

Background

The mobile phone communication technology is operated simultaneously in the frequency division multiplexing mode, and the duplexer is used for filtering the transmitted signal and the received signal so as to ensure that the transmission and the reception cannot be affected mutually. The frequency band supported by the mobile phone is usually different, so that a plurality of diplexers adapting to the working frequency band are needed.

In the process of designing and implementing the present application, the inventors found that at least the following problems exist: since a separate diplexer is required for each frequency band in the frequency division multiplexing, the cost is increased.

The foregoing description is provided for general background information and does not necessarily constitute prior art.

Disclosure of Invention

Aiming at the technical problems, the application provides a signal transmission circuit, an intelligent terminal, a signal transmission method and a storage medium, and a duplexer with a new frequency band can be formed by adding a filter and a switch without adding extra duplexers, so that the cost can be saved.

In order to solve the above technical problem, the present application provides a signal transmission circuit, including:

at least one transmission end selection group, each transmission end selection group comprising a single first transmission end and a single second transmission end;

The antenna switch modules are electrically connected with the first transmission ends respectively;

a filter connected between each of the second transmission ends and the antenna switch module;

a duplexer group including at least one duplexer equal in number to the transmission end selection group;

the selection switches correspond to the single duplexer and the single transmission end selection group;

and the controller is used for controlling the selection switch to selectively connect the common terminal of the duplexer to the corresponding first transmission terminal or second transmission terminal.

Optionally, the signal transmission circuit further comprises at least one of: the at least one transmission end selection group comprises M transmission end selection groups and N receiving end selection groups, each transmission end selection group comprises a single first transmission end and a single second transmission end, and each receiving end selection group comprises a single first receiving end and a single second receiving end;

the antenna switch module is electrically connected with the transmitting interfaces/receiving interfaces of the antenna switch module through M first transmitting ends and N first receiving ends;

the filter comprises a transmitting filter and a receiving filter, and the transmitting filter is connected between M second transmitting ends and a target interface of the antenna switch module; the receiving filters are connected between the N second receiving ends and the target interfaces of the antenna switch module;

The duplexer group comprises a first duplexer group and a second duplexer group, wherein the first duplexer group comprises M first duplexers, and the second duplexer group comprises N second duplexers;

the selection switches comprise M first switches and N second switches, each first switch corresponds to a single first duplexer and a single sending end selection group, and each second switch corresponds to a single second duplexer and a single receiving end selection group;

the controller is specifically configured to control the first switch to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal or the second transmitting terminal, and control the second switch to selectively connect the common terminal of the second duplexer to the corresponding first receiving terminal or the second receiving terminal.

Optionally, M is a positive integer.

Optionally, N is a positive integer.

Optionally, the circuit further includes a transceiver, and each of the M first diplexers and the N second diplexers is connected to a transmit interface/receive interface of the transceiver.

Optionally, the transceiver is configured to send a signal to the antenna switch module for communication.

Optionally, the transceiver is further configured to receive a signal and communicate based on the received signal.

Optionally, the working frequency band of the transmitting filter coincides with the working frequency band of any one of the first diplexers.

Optionally, the working frequency band of the receiving filter coincides with the working frequency band of any one of the second diplexers.

Optionally, the operating frequency band of the first duplexer includes a transmitting frequency band, and the transmitting frequency band of the first duplexer includes the operating frequency band of the transmitting filter.

Optionally, the operating frequency band of the second duplexer includes a receiving frequency band, and the receiving frequency band of the second duplexer includes an operating frequency band of the receiving filter.

Optionally, when receiving a transmission signal in a second frequency band, the controller is configured to control the first switch to selectively connect the common terminal of the first duplexer to a corresponding first transmitting terminal, where the second frequency band is an operating frequency band of the first duplexer; when receiving a transmission signal of a third frequency band, the controller is configured to control the second switch to selectively connect the common terminal of the second duplexer to the corresponding first receiving terminal, where the third frequency band is an operating frequency band of the second duplexer; the antenna switch module is used for selecting one signal from the transmission signals of the second frequency band and the transmission signals of the third frequency band for communication.

Optionally, the signal transmission circuit further comprises an amplifier, and the amplifier is connected with the first duplexer group and a transmitting interface of the transceiver.

Optionally, the amplifier is configured to amplify a transmission signal sent by the transceiver to obtain an amplified signal, and send the amplified signal to the first duplexer group.

Optionally, the first duplexer group includes a first duplexer, and the second duplexer group includes a second duplexer.

The application also provides an intelligent terminal, which is characterized by comprising the signal transmission circuit.

The application also provides a signal transmission method, which is applied to the intelligent terminal and comprises the following steps:

the controller selects a corresponding first target duplexer from the first duplexer group in a first working mode, controls the first target duplexer to be in a transmitting working state, and controls the corresponding first switch to selectively connect a public end of the first target duplexer to the corresponding first transmitting end; selecting a corresponding second target duplexer in the second duplexer group, controlling the second target duplexer to be in a receiving working state, and controlling the corresponding second switch to selectively connect a public end of the second target duplexer to the corresponding first receiving end;

And/or the number of the groups of groups,

the controller selects a corresponding third target duplexer from the first duplexer group in a second working mode, controls the third target duplexer to be in a transmitting working state, and controls the corresponding first switch to selectively connect the public end of the third target duplexer to the corresponding second transmitting end; and selecting a corresponding fourth target duplexer in the second duplexer group, controlling the fourth target duplexer to be in a receiving working state, and controlling the corresponding second switch to selectively connect the public end of the fourth target duplexer to the corresponding second receiving end.

The application also provides an intelligent terminal, including: the signal transmission system comprises a memory and a processor, wherein the memory stores a signal transmission program, and the signal transmission program realizes the steps of any signal transmission method when being executed by the processor.

The present application also provides a computer readable storage medium storing a computer program which when executed by a processor performs the steps of signal transmission as described in any one of the above.

As described above, according to the technical scheme of the present application, by adding the transmitting filter, the receiving filter and the switch, in different working modes, by selecting different diplexers and selecting the working states of the diplexers, the processing of the transmitting signal and the receiving signal of the newly added frequency band can be achieved respectively. The duplexer with the new frequency band can be formed by adding the filter and the switch to process the signal with the new frequency band, so that the duplexer is not required to be additionally added, and the cost can be saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic hardware structure of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present application;

fig. 3 is a schematic diagram of a composition structure of a signal transmission circuit according to an embodiment of the present application;

fig. 4 is a schematic diagram of a composition structure of another signal transmission circuit according to an embodiment of the present application;

fig. 5 is a schematic diagram of a filter structure according to an embodiment of the present application;

fig. 6 is a schematic flow chart of a signal transmission method provided in the present embodiment;

fig. 7 is a flowchart of another signal transmission method according to the present embodiment.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings. Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the element defined by the phrase "comprising one … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element, and furthermore, elements having the same name in different embodiments of the present application may have the same meaning or may have different meanings, a particular meaning of which is to be determined by its interpretation in this particular embodiment or by further combining the context of this particular embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or," "and/or," "including at least one of," and the like, as used herein, may be construed as inclusive, or meaning any one or any combination. For example, "including at least one of: A. b, C "means" any one of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C ", again as examples," A, B or C "or" A, B and/or C "means" any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; a and B and C). An exception to this definition will occur only when a combination of elements, functions, steps or operations are in some way inherently mutually exclusive.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily occurring in sequence, but may be performed alternately or alternately with other steps or at least a portion of the other steps or stages.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.

It should be noted that, in this document, step numbers such as S10 and S20 are adopted, and the purpose of the present invention is to more clearly and briefly describe the corresponding content, and not to constitute a substantial limitation on the sequence, and those skilled in the art may execute S20 first and then execute S10 when implementing the present invention, which is within the scope of protection of the present application.

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se. Thus, "module," "component," or "unit" may be used in combination.

The intelligent terminal may be implemented in various forms. For example, the smart terminals described in the present application may include smart terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and stationary terminals such as digital TVs, desktop computers, and the like.

The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Referring to fig. 1, which is a schematic hardware structure of a mobile terminal implementing various embodiments of the present application, the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The following describes the components of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, GSM (Global System of Mobile communication, global system for mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, 2000, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division duplex long term evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division duplex long term evolution), and 5G, among others.

WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of a mobile terminal, and can be omitted entirely as required within a range that does not change the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor, optionally, the ambient light sensor may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.

The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects the touch azimuth of the user, detects a signal brought by touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. Alternatively, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.

Alternatively, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and the processor 110 then provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.

The interface unit 108 serves as an interface through which at least one external device can be connected with the mobile terminal 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, and alternatively, the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, the application processor optionally handling mainly an operating system, a user interface, an application program, etc., the modem processor handling mainly wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the mobile terminal of the present application is based will be described below.

Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system provided in the embodiment of the present application, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.

Alternatively, the UE201 may be the mobile terminal 100 described above, which is not described herein.

The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. Alternatively, the eNodeB2021 may connect with other enodebs 2022 over a backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access for the UE201 to the EPC 203.

EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. Optionally, MME2031 is a control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.

Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present application is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems (e.g., 5G), etc.

Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are presented.

First embodiment

The mobile phone communication technology can be divided into two modes of time division multiplexing and frequency division multiplexing according to the multiplexing mode of the transmitting signal and the receiving signal, and the transmitting signal and the receiving signal simultaneously work in the frequency division multiplexing mode. The frequency of the Band supported by the mobile phone is usually different, so that a plurality of diplexers corresponding to the working Band are needed, for example, 3 frequency bands (Band 1, band2 and Band 3) are supported, and3 diplexers (Band 1 diplexer, band2 diplexer and Band3 diplexer) are needed on a circuit. However, the cost of the diplexer is high, and a separate diplexer is required for each frequency band at present, so that the circuit cost is high.

In view of the above problem that the cost of the circuit is high due to the need of a separate duplexer for the signals in each frequency band, the present embodiment provides a signal transmission circuit, which can reduce the cost of the circuit without adding an additional duplexer. The signal transmission circuit provided in this embodiment may include at least one transmission end selection group, an antenna switch module, a filter, a duplexer group, a selection switch, and a controller. Each transmission end selection group includes a single first transmission end and a single second transmission end. Each first transmission end is electrically connected with the antenna switch module; the filter is connected between each second transmission end and the antenna switch module; the duplexer group comprises at least one duplexer with the same number as the transmission end selection group; each selection switch corresponds to a single duplexer and a single transmission end selection group; the controller is used for controlling the selection switch to selectively connect the common terminal of the duplexer to the corresponding first transmission terminal or second transmission terminal. Alternatively, the at least one transmission end selection group may include M transmission end selection groups and N reception end selection groups. Optionally, the filter comprises a transmit filter and a receive filter. Optionally, the diplexer group includes a first diplexer group and a second diplexer group. Optionally, the selection switch comprises a first switch and a second switch. Optionally, the controller is specifically configured to control the first switch to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal or the second transmitting terminal, and control the second switch to selectively connect the common terminal of the second duplexer to the corresponding first receiving terminal or the second receiving terminal. The following describes the constituent structure in the signal transmission circuit with reference to fig. 3:

Referring to fig. 3, fig. 3 is a schematic diagram of a composition structure of a signal transmission circuit according to an embodiment of the present application, and as shown in fig. 3, the signal transmission circuit includes, but is not limited to, the following components: m transmit-side selection groups 301, N receive-side selection groups 302, an antenna switch module 303, a transmit filter 304, a receive filter 305, a first duplexer group 306, a second duplexer group 307, M first switches 308, N second switches 309, and a controller 310. Wherein M and N are positive integers.

Optionally, each transmitting end selection group includes a single first transmitting end and a single second transmitting end, and each receiving end selection group includes a single first receiving end and a single second receiving end. The M first transmitting ends are electrically connected to the transmitting interface of the antenna switch module 303, and the N first receiving ends are electrically connected to the receiving interface of the antenna switch module 303. The transmission filters 304 are connected between the M second transmission terminals and the target interfaces of the antenna switch module 303. The receiving filters 305 are connected between the N second receiving ends and the target interfaces of the antenna switch module 303. The first duplexer group 306 includes M first duplexers, and the second duplexer group 307 includes N second duplexers; the first diplexer group 306 is connected to M first switches 308, and the second diplexer group 307 is connected to N second switches 309. Optionally, each of the M first switches 308 corresponds to a single first duplexer and a single transmit-side selection group, and each of the N second switches 309 corresponds to a single second duplexer and a single receive-side selection group. The controller 310 is connected to the first duplexer group 306, the second duplexer group 307, the M transmitting-side selection groups 301, and the N receiving-side selection groups 302. The controller 310 is configured to control the first switch to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal or the second transmitting terminal, and control the second switch to selectively connect the common terminal of the second duplexer to the corresponding first receiving terminal or the second receiving terminal. Alternatively, the target interface of the antenna switch module may refer to a transmitting interface or a receiving interface of the antenna switch module, and the antenna switch module may include a plurality of ports thereon, for example, a plurality of ports for receiving signals and a plurality of ports for transmitting signals. That is, the transmit filter and the receive filter may be connected to the same interface of the antenna switch module.

Optionally, the signal transmission circuit further includes a transceiver 311, and optionally, M first duplexers are connected with a transmitting interface of the transceiver 311, and N second duplexers are connected with a receiving interface of the transceiver 311. The transceiver is used to transmit signals to the antenna switch module 303 for communication, and is also used to receive signals and communicate based on the received signals.

The operation principle of the signal transmission circuit provided in the present application is described below with reference to fig. 3.

The controller 310 selects a corresponding first target duplexer 306a (not shown in fig. 3) in the first duplexer group 306 in the first operation mode, controls the first target duplexer 306a to be in a transmitting operation state, and controls a corresponding first switch 308a (not shown in fig. 3) to selectively connect the common terminal of the first target duplexer 306a to a corresponding first transmitting terminal 301a (not shown in fig. 3) so as to achieve connection between the first target duplexer 306a and the antenna switch module 303. A corresponding second target duplexer 307a (not shown in fig. 3) is selected in the second duplexer group 307, the second target duplexer 307a is controlled to be in a receiving operation state, and a corresponding second switch 309a (not shown in fig. 3) is controlled to selectively connect the common terminal of the second target duplexer 307a to the corresponding first receiving terminal 302a (not shown in fig. 3) so as to achieve connection between the second target duplexer 307a and the antenna switch module 303.

Optionally, the first operation mode includes the signal transmission circuit transmitting a transmission signal of the second frequency band and receiving a reception signal of the second frequency band, or the first operation mode includes the signal transmission circuit transmitting a transmission signal of the third frequency band and receiving a reception signal of the third frequency band. Optionally, the working frequency band of the first target duplexer 306a is a second frequency band, and the receiving frequency band of the second target duplexer 307a is a third frequency band. The second frequency band comprises a transmitting frequency band and a receiving frequency band, the working frequency band of the first target duplexer comprises a transmitting frequency band and a receiving frequency band, the transmitting frequency band of the first target duplexer is equal to the transmitting frequency band in the second frequency band, and the receiving frequency band of the first target duplexer is equal to the receiving frequency band in the second frequency band. That is, the operating frequency band of the first target duplexer is the second frequency band. The third frequency band comprises a transmitting frequency band and a receiving frequency band, the working frequency band of the second target duplexer comprises a transmitting frequency band and a receiving frequency band, the transmitting frequency band of the second target duplexer is equal to the transmitting frequency band in the third frequency band, and the receiving frequency band of the second target duplexer is equal to the receiving frequency band in the third frequency band. That is, the operating frequency band of the second target duplexer is the third frequency band.

Alternatively, the transmission signal of the second frequency band and the transmission signal of the third frequency band may be transmitted by the transceiver 311 in the signal transmission circuit, and the signal transmitted by the transceiver 311 is transmitted to the antenna switch module 303 through the signal transmission circuit, so as to implement communication with other terminals. The received signal in the second frequency band and the received signal in the third frequency band may be transmitted by other circuits to the signal transmission circuit. Alternatively, the antenna switch module 303 may include an antenna 3031 (not shown in fig. 3), or the antenna switch module 303 and the antenna 3031 may be connected to jointly implement communication.

That is, the first target duplexer may refer to a duplexer operating in the second frequency band, and when the frequency band corresponding to the frequency of the transmission signal and the received reception signal transmitted by the signal transmission circuit belongs to the second frequency band, the first target duplexer may be used to perform filtering processing on the transmission signal and the received signal, so as to ensure that the transmission signal and the received signal do not affect each other, thereby implementing communication based on the signal in the second frequency band. The second target duplexer may refer to a duplexer operating in a third frequency band, and when a frequency band corresponding to a frequency of a transmission signal transmitted by the signal transmission circuit and a frequency of a received signal belongs to the third frequency band, the second target duplexer may be used to perform filtering processing on the transmission signal and the received signal, so as to ensure that the transmission signal and the received signal cannot affect each other, thereby implementing communication based on the signal of the third frequency band.

In an alternative implementation manner, when the signal transmission circuit receives the received signal in the second frequency band, the controller 310 controls the first target duplexer 306a to be in a receiving state, and controls the first switch 308a corresponding to the first target duplexer 306a to selectively connect the common terminal of the first target duplexer 306a to the corresponding first transmitting terminal 301a, so that the first target duplexer 306a is connected to the antenna switch module 303, and the first target duplexer 306a may receive the received signal sent by the antenna switch module 303, perform filtering processing, and then send the filtered signal to the transceiver 311, thereby implementing communication.

In another alternative implementation manner, when the signal transmission circuit transmits the transmission signal in the third frequency band, the controller 310 controls the second target duplexer 307a to be in the transmission working state, and controls the corresponding second switch 309a to selectively connect the common terminal of the second target duplexer 307a to the corresponding first receiving terminal 302a, so that the connection between the second target duplexer 307a and the antenna switch module 303 can be achieved, and the second target duplexer 307a can receive the transmission signal sent by the transceiver 311, perform the filtering processing, and then send the filtered signal to the antenna switch module 303, thereby achieving communication.

In the second operation mode, the controller 310 selects a corresponding third target duplexer 306b (not shown in fig. 3) in the first duplexer group 306, controls the third target duplexer 306b to be in a transmitting operation state, and controls a corresponding first switch 308b (not shown in fig. 3) to selectively connect the common terminal of the third target duplexer 306b to a corresponding second transmitting terminal 301b (not shown in fig. 3) so as to realize connection between the third target duplexer 306b and the transmitting filter 304. A corresponding fourth target duplexer 307b (not shown in fig. 3) is selected in the second duplexer group 307, the fourth target duplexer 307b is controlled to be in a receiving operation state, and a corresponding second switch 309b (not shown in fig. 3) is controlled to selectively connect the common terminal of the fourth target duplexer 307b to a corresponding second receiving terminal 302b (not shown in fig. 3) so as to achieve connection between the fourth target duplexer 307b and the receiving filter 305.

Optionally, the second operation mode includes the signal transmission circuit transmitting a transmission signal of the first frequency band and receiving a reception signal of the first frequency band. Alternatively, the third target duplexer and the first target duplexer may be the same duplexer, and the operating frequency band of the third target duplexer 306b is the second frequency band. The second target duplexer and the fourth target duplexer may be the same duplexer, and the operating frequency band of the fourth target duplexer 307b is the third frequency band. The transmitting frequency band of the second frequency band is overlapped with the transmitting frequency band of the first frequency band, and the receiving frequency band of the third frequency band is overlapped with the receiving frequency band of the first frequency band. The operating frequency band of the transmit filter 304 coincides with the operating frequency band of any first diplexer (e.g., the third target diplexer 306 b) in the first diplexer group 306; the operating frequency band of the receive filter 305 coincides with the operating frequency band of any one of the second diplexers (e.g., the fourth target diplexer 307 b) in the second diplexer group 307.

That is, since there is a coincidence between the transmission frequency band of the third target duplexer and the transmission frequency band of the first frequency band, the third target duplexer can perform filtering processing on the transmission signal of the first frequency band, and since there is a coincidence between the operation frequency band of the transmission filter and the transmission frequency band of the third target duplexer, the frequency band of the transmission signal after filtering processing by the third target duplexer exactly coincides with the operation frequency band of the transmission filter, and therefore the transmission filter can process the signal after filtering processing by the third target duplexer, so as to avoid overlapping of the transmission signal and the reception signal. Correspondingly, since the receiving frequency band of the fourth target duplexer is overlapped with the receiving frequency band of the first frequency band, the fourth target duplexer can perform filtering processing on the receiving signal of the first frequency band, and since the working frequency band of the receiving filter is overlapped with the receiving frequency band of the fourth target duplexer, the frequency of the receiving signal which is filtered by the fourth target duplexer is exactly overlapped with the receiving frequency band of the fourth target duplexer, and therefore the fourth target duplexer can process the signal which is filtered by the receiving filter, and the overlapping of the sending signal and the receiving signal is avoided.

It can be understood that the transmitting frequency bands of the M first diplexers are all intersected with the transmitting frequency band of the first frequency band, and the receiving frequency bands of the N second diplexers are all intersected with the receiving frequency band of the first frequency band. When the signal transmission circuit transmits the transmission signal of the first frequency band, the frequency of the transmission signal of the first frequency band is coincident with the transmission frequency bands of the M first diplexers, so that the transmission signal can be subjected to filtering processing by one first diplexer selected from the M first diplexers, the filtered signal is sent to the transmission filter, and the signal is transmitted to the antenna switch module after being processed by the transmission filter, thereby realizing communication. When the signal transmission circuit receives the received signal in the first frequency band, the frequency of the received signal in the first frequency band is coincident with the frequency of the received signal in the N second diplexers, so that the signal after the filtering processing can be sent to the transceiver by selecting any one of the N second diplexers after the filtering processing is performed on the received signal by using the receiving filter, and the signal is transmitted to the transceiver after being processed based on the second diplexers, thereby realizing communication.

Illustratively, the relationship between the frequency band and the receiving frequency band, the transmitting frequency band may be as shown in table 1:

TABLE 1

The table 1 includes bandwidths corresponding to different frequency bands, and transmitting frequency bands and receiving frequency bands included in the different frequency bands. As can be seen from table 1, the frequency range corresponding to the transmission frequency band of the first frequency band is (1710-1755), and the frequency range corresponding to the reception frequency band of the first frequency band is (2110-2155); the frequency range corresponding to the transmitting frequency band of the second frequency band is (1710-1785), and the frequency range corresponding to the receiving frequency band of the second frequency band is (1805-1880); the frequency range corresponding to the transmitting frequency band of the third frequency band is 1920-1980, and the frequency range corresponding to the receiving frequency band of the third frequency band is 2110-2170; the frequency range corresponding to the transmitting frequency band of the fourth frequency band is 1710-1770, and the frequency range corresponding to the receiving frequency band of the fourth frequency band is 2110-2170. It can be seen that the frequency ranges corresponding to the transmitting frequency band of the first frequency band and the transmitting frequency band of the second frequency band are intersected, and the frequency ranges corresponding to the receiving frequency band of the first frequency band and the receiving frequency band of the third frequency band are intersected. The transmitting frequency band of the fourth frequency band has an intersection with the frequency range corresponding to the transmitting frequency band of the second frequency band, and the receiving frequency band of the fourth frequency band is equal to the frequency range corresponding to the receiving frequency band of the third frequency band.

It can be understood that, in the embodiment of the present application, the second frequency band duplexer and the third frequency band duplexer are used to form the first frequency band duplexer, and since there is an intersection between the fourth frequency band and the frequency ranges of the second frequency band and the third frequency band, the second frequency band duplexer and the third frequency band duplexer may be used to form the fourth frequency band duplexer in a manner in the embodiment of the present application, which is not described herein too.

In a possible case, when receiving the transmission signal in the second frequency band, the controller 310 is configured to control the first switch to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal, where the first duplexer is any one of the first duplexer groups 306, and the second frequency band is an operating frequency band of the first duplexer. When receiving the transmission signal in the third frequency band, the controller 310 is configured to control the second switch to selectively connect the common terminal of the second diplexer to the corresponding first receiving terminal, where the second diplexer is any one of the second diplexer groups 307, and the third frequency band is an operating frequency band of the second diplexer. And an antenna switch module 303, configured to select one signal from the transmission signal in the second frequency band and the transmission signal in the third frequency band for communication.

That is, when the signal transmission circuit receives the transmission signal of the second frequency band and the transmission signal of the third frequency band at the same time, the antenna switch module can select any one signal for communication, so that signal confusion is avoided, and communication accuracy is improved.

Optionally, the signal transmission circuit may further include an amplifier, the amplifier being connected to the first duplexer group and a transmission interface of the transceiver; the amplifier is used for amplifying the transmitting signal sent by the transceiver to obtain an amplified signal, and sending the amplified signal to the first duplexer group. The power amplification is carried out on the signals sent by the transceiver through the amplifier, so that the requirement of sending power can be met, the signals are finally radiated to the space through the antenna, the signal level can be ensured to be received by the terminal in a certain area, and the communication of adjacent channels is not interfered.

In the embodiment of the application, the first switch can be controlled to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal or second transmitting terminal. When the first switch is controlled to connect the public end of the first duplexer with the corresponding second transmitting end, the first duplexer is connected with the transmitting filter, and filtering processing can be carried out on the transmitting signals. Alternatively, the second switch may be controlled to selectively connect the common terminal of the second diplexer to the corresponding first receiving terminal or second receiving terminal. When the second switch is controlled to connect the common terminal of the second diplexer to the corresponding second receiving terminal, the second diplexer is connected to the receiving filter, so that filtering processing can be performed on the received signal. Therefore, the two diplexers can be combined into a new diplexer by adding the filter and the switch on the basis of the original circuit, and the cost can be saved without adding one diplexer.

In a further embodiment, since the working frequency band of the first duplexer is the second frequency band, when a signal in the second frequency band is received, the first duplexer can perform filtering processing on the transmission signal and the reception signal in the second frequency band, so as to avoid the influence of the signal. Similarly, since the working frequency band of the second duplexer is the third frequency band, when the signal in the third frequency band is received, the second duplexer can perform filtering processing on the transmitting signal and the receiving signal in the third frequency band, so as to avoid the influence of the signal. When signals of a first frequency band (new frequency band) are received, as the frequency of the transmitting signals of the first frequency band is overlapped with the working frequency band of the first duplexer, and the frequency of the receiving signals of the first frequency band is overlapped with the working frequency band of the second duplexer, the two duplexers working in different frequency bands can be combined into a new frequency band (first frequency band) duplexer by adding the filter and the switch on the basis of the original signal transmission circuit, and the cost can be saved without adding a duplexer.

Second embodiment

The present embodiment provides another signal transmission circuit, alternatively, the first duplexer group in the signal transmission circuit may include a first duplexer, and the second duplexer group may include a second duplexer. Referring to fig. 4, fig. 4 is a schematic diagram of the composition structure of another signal transmission circuit according to the embodiment of the present application, and as shown in fig. 4, the signal transmission circuit includes, but is not limited to, the following components: a transmitting side selection group 401, a receiving side selection group 402, an antenna switch module 403, a transmitting filter 404, a receiving filter 405, a first duplexer 406, a second duplexer 407, a first switch 408, a second switch 409, a controller 410, a transceiver 411, an amplifier 412, and an antenna 4031.

Optionally, the transceiver 411 is connected to the amplifier 412, the receiving interface of the first diplexer 406, and the receiving interface of the second diplexer 407; the amplifier 412 is connected to the transmission interface of the transceiver 411, the transmission interface of the first duplexer 406, and the transmission interface of the second duplexer 407; the common terminal of the first diplexer 406 is connected to a first switch 408; the common terminal of the second diplexer 407 is connected to a second switch 409; the transmitting-side selection group 401 includes a single first transmitting side 401a (not shown in fig. 4) and a single second transmitting side 401b (not shown in fig. 4), and the receiving-side selection group 402 includes a single first receiving side 402a (not shown in fig. 4) and a single second receiving side 402b (not shown in fig. 4); the target interface of the antenna switch module 403 is electrically connected with the first transmitting end 401a, and the receiving interface of the antenna switch module 403 is electrically connected with the first receiving end 402 a; the transmission filter 404 is connected between the second transmitting terminal 401b and the target interface of the antenna switch module 403; the receiving filter 405 is connected between the second receiving end 402b and the target interface of the antenna switch module 403; the antenna switch module 403 is connected to the antenna 4031. The controller 410 is connected to the transmission side selection group 401, the reception side selection group 402, the first diplexer 406, and the second diplexer 407. The controller 410 is configured to control the first switch 408 to selectively connect the common terminal of the first duplexer 406 to the corresponding first transmitting terminal 401a or the second transmitting terminal 401b, and control the second switch 409 to selectively connect the common terminal of the second duplexer 407 to the corresponding first receiving terminal 402a or the second receiving terminal 402b.

The operation principle of the signal transmission circuit provided in the present application is described below with reference to fig. 4.

In the first operation mode, the controller 410 controls the first diplexer 406 to be in a transmitting operation state, and controls the corresponding first switch 408 to selectively connect the common terminal of the first diplexer 406 to the corresponding first transmitting terminal 401a, so as to realize connection between the first diplexer 406 and the antenna switch module 403.

That is, when the transceiver transmits the transmission signal of the second frequency band, the transmission signal of the second frequency band may be amplified by the amplifier to obtain an amplified signal, and the amplified signal may be sent to the first duplexer 406; the first duplexer 406 performs filtering processing on the amplified signal, and sends the signal after the filtering processing to the antenna switch module 403, and the antenna switch module 403 may analyze the signal through the antenna 4031, thereby implementing communication.

The controller 410 controls the second diplexer 407 to be in a receiving operation state in the first operation mode, and controls the corresponding second switch 409 to selectively connect the common terminal of the second diplexer 407 to the corresponding first receiving terminal 402a, so as to realize connection between the second diplexer 407 and the antenna switch module 403.

That is, when the signal transmission circuit receives the received signal in the third frequency band, the signal may be filtered by the second duplexer 407 and then sent to the transceiver 411, and the transceiver 411 may parse the signal, thereby implementing communication.

In a second operation mode, for example, in the case of transmitting a transmission signal in the first frequency band, the controller 410 controls the first duplexer 406 to be in a transmission operation state, and controls the corresponding first switch 408 to selectively connect the common terminal of the first duplexer 406 to the corresponding second transmitting terminal 401b, so as to implement connection between the first duplexer 406 and the transmission filter 404. In a second operation mode, for example, in the case of receiving the received signal in the first frequency band, the controller 410 controls the second diplexer 407 to be in a receiving operation state, and controls the corresponding second switch 409 to selectively connect the common terminal of the second diplexer 407 to the corresponding second receiving terminal 402b, so as to implement connection between the second diplexer 407 and the receiving filter 405.

That is, when the transceiver 411 transmits the transmission signal of the first frequency band, since there is an overlap between the first frequency band and the operation frequency band of the first duplexer 406, the transmission signal of the first frequency band may be amplified by the amplifier 412 to obtain an amplified signal, and the amplified signal may be transmitted to the first duplexer 406; the first duplexer 406 performs filtering processing on the amplified signal, sends the signal after the filtering processing to the transmission filter 404 to perform filtering processing, and sends the signal after the filtering processing by the transmission filter 404 to the antenna switch module 403, and the antenna switch module 403 can analyze the signal through the antenna 4031, thereby realizing communication.

Alternatively, when the signal transmission circuit receives the received signal in the first frequency band, since the first frequency band overlaps with the operating frequency band of the second duplexer 407, the received signal may be filtered by the receiving filter 405, the filtered signal may be sent to the second duplexer 407, the signal may be filtered by the second duplexer 407 and then sent to the transceiver 411, and the transceiver 411 may parse the signal, thereby implementing communication.

Optionally, the transmitting filter 404 and the receiving filter 405 in the signal transmission circuit may also be configured by capacitors and inductors, such as pi-type band-pass filters, and referring to fig. 5, fig. 5 is a schematic diagram of a filter structure provided in an embodiment of the present application, and fig. 5 includes a capacitor C1, an inductor L1 and an inductor L2. The pi-type band-pass filter is a relatively simple implementation manner, and can be connected in series in multiple stages in actual use, and the power parameters are adjusted to achieve the working frequency range or the working bandwidth required by the transmitting filter and the receiving filter.

In the embodiment of the application, the filter is added to perform primary filtering on the transmission signal or the receiving signal of the newly added frequency band, so that useful frequencies in the signals are extracted, and direct parallel connection of the paths is avoided. Since there is no need to add an additional duplexer, radio frequency devices such as a duplexer can be saved, and thus the cost can be reduced. Optionally, as the duplexer of the new frequency band is formed by two duplexers, the new duplexer can be debugged only by debugging the two duplexers respectively, the existing frequency band duplexer can be reused without additionally debugging the new duplexer, and the debugging workload is reduced. In addition, due to the fact that radio frequency key materials are reduced, the types of the diplexer can be reduced, the supply risk is reduced, materials are saved, and the circuit space is reduced.

In this embodiment of the present application, since the working frequency band of the first duplexer is the second frequency band, when a signal in the second frequency band is received, the first duplexer may perform filtering processing on the transmission signal and the reception signal in the second frequency band, so as to avoid the signal from being affected. Similarly, since the working frequency band of the second duplexer is the third frequency band, when the signal in the third frequency band is received, the second duplexer can perform filtering processing on the transmitting signal and the receiving signal in the third frequency band, so as to avoid the influence of the signal. When signals of a first frequency band (new frequency band) are received, as the frequency of the transmitting signals of the first frequency band is overlapped with the working frequency band of the first duplexer, and the frequency of the receiving signals of the first frequency band is overlapped with the working frequency band of the second duplexer, the two duplexers working in different frequency bands can be combined into a new frequency band (first frequency band) duplexer by adding the filter and the switch on the basis of the original signal transmission circuit, and the cost can be saved without adding a duplexer.

Third embodiment

The present embodiment provides a flow chart of a signal transmission method, referring to fig. 6, fig. 6 is a flow chart of the signal transmission method provided in the present embodiment, where the signal transmission method is applied to an intelligent terminal including a signal transmission circuit, and the signal transmission method includes the following steps:

S10: and under the first working mode, the controller selects a corresponding first target duplexer in the first duplexer group, controls the first target duplexer to be in a transmitting working state, and controls a corresponding first switch to selectively connect the public end of the first target duplexer to the corresponding first transmitting end.

S20: and selecting a corresponding second target duplexer in the second duplexer group, controlling the second target duplexer to be in a receiving working state, and controlling a corresponding second switch to selectively connect the public end of the second target duplexer to a corresponding first receiving end.

Optionally, the first operation mode includes the signal transmission circuit transmitting a transmission signal of the second frequency band and receiving a reception signal of the second frequency band, or the first operation mode includes the signal transmission circuit transmitting a transmission signal of the third frequency band and receiving a reception signal of the third frequency band. Optionally, the working frequency band of the first target duplexer is a second frequency band, and the working frequency band of the second target duplexer is a third frequency band. The second frequency band comprises a transmitting frequency band and a receiving frequency band, the working frequency band of the first target duplexer comprises a transmitting frequency band and a receiving frequency band, the transmitting frequency band of the first target duplexer is equal to the transmitting frequency band in the second frequency band, and the receiving frequency band of the first target duplexer is equal to the receiving frequency band in the second frequency band. The third frequency band comprises a transmitting frequency band and a receiving frequency band, the working frequency band of the second target duplexer comprises a transmitting frequency band and a receiving frequency band, the transmitting frequency band of the second target duplexer is equal to the transmitting frequency band in the third frequency band, and the receiving frequency band of the second target duplexer is equal to the receiving frequency band in the third frequency band. The transmitting signal of the second frequency band and the transmitting signal of the third frequency band can be transmitted by a transceiver in the signal transmission circuit, and the signals transmitted by the transceiver are transmitted to the antenna switch module after being processed by the signal transmission circuit, so that communication with other terminals is realized. The received signal in the second frequency band and the received signal in the third frequency band may be transmitted by other circuits to the signal transmission circuit.

In this embodiment of the present invention, the first target duplexer may refer to a duplexer that works in a second frequency band, and when a frequency band corresponding to a frequency of a transmission signal transmitted by the signal transmission circuit and a received signal belongs to the second frequency band, the first target duplexer may be used to perform filtering processing on the transmission signal and the received signal, so as to ensure that the transmission signal and the received signal cannot affect each other, thereby implementing communication based on a signal in the second frequency band. The second target duplexer may refer to a duplexer operating in a third frequency band, and when a frequency band corresponding to a frequency of a transmission signal transmitted by the signal transmission circuit and a frequency of a received signal belongs to the third frequency band, the second target duplexer may be used to perform filtering processing on the transmission signal and the received signal, so as to ensure that the transmission signal and the received signal cannot affect each other, thereby implementing communication based on the signal of the third frequency band.

Fourth embodiment

The present embodiment provides a flowchart of another signal transmission method, referring to fig. 7, and fig. 7 is a flowchart of another signal transmission method provided in the present embodiment, where the signal transmission method is applied to a signal transmission circuit, and the signal transmission method includes, but is not limited to, the following steps:

S30: and under the second working mode, the controller selects a corresponding third target duplexer in the first duplexer group, controls the third target duplexer to be in a transmitting working state, and controls the corresponding first switch to selectively connect the common end of the third target duplexer with the corresponding second transmitting end.

S40: and selecting a corresponding fourth target duplexer in the second duplexer group, controlling the fourth target duplexer to be in a receiving working state, and controlling a corresponding second switch to selectively connect the public end of the fourth target duplexer to a corresponding second receiving end.

Optionally, the second operation mode includes the signal transmission circuit transmitting a transmission signal of the first frequency band and receiving a reception signal of the first frequency band. Optionally, the working frequency band of the third target duplexer is a second frequency band, the working frequency band of the fourth target duplexer is a third frequency band, the transmitting frequency band of the second frequency band is overlapped with the transmitting frequency band of the first frequency band, and the receiving frequency band of the third frequency band is overlapped with the receiving frequency band of the first frequency band. The working frequency band of the transmitting filter is overlapped with the working frequency band of any first duplexer (such as a third target duplexer) in the first duplexer group; the operating frequency band of the receiving filter coincides with the operating frequency band of any one of the second diplexers (e.g., the fourth target diplexer) in the second diplexer group.

That is, since there is a coincidence between the transmission frequency band of the third target duplexer and the transmission frequency band of the first frequency band, the third target duplexer can perform filtering processing on the transmission signal of the first frequency band, and since there is a coincidence between the operation frequency band of the transmission filter and the transmission frequency band of the third target duplexer, the frequency band of the transmission signal after filtering processing by the third target duplexer exactly coincides with the operation frequency band of the transmission filter, and therefore the transmission filter can process the signal after filtering processing by the third target duplexer, so as to avoid overlapping of the transmission signal and the reception signal.

Correspondingly, since the receiving frequency band of the fourth target duplexer is overlapped with the receiving frequency band of the first frequency band, the fourth target duplexer can perform filtering processing on the receiving signal of the first frequency band, and since the working frequency band of the receiving filter is overlapped with the receiving frequency band of the fourth target duplexer, the frequency of the receiving signal which is filtered by the fourth target duplexer is exactly overlapped with the receiving frequency band of the fourth target duplexer, and therefore the fourth target duplexer can process the signal which is filtered by the receiving filter, and the overlapping of the sending signal and the receiving signal is avoided.

Optionally, when receiving the transmission signal in the second frequency band, the controller is configured to control the first switch to selectively connect the common terminal of the first duplexer to the corresponding first transmitting terminal, where the first duplexer is any one of the first duplexer groups, and the second frequency band is an operating frequency band of the first duplexer. When receiving the transmitting signal of the third frequency band, the controller is used for controlling the second switch to selectively connect the public end of the second duplexer to the corresponding first receiving end, the second duplexer is any one duplexer in the second duplexer group, and the third frequency band is the working frequency band of the second duplexer. And the antenna switch module is used for selecting one signal from the transmission signals of the second frequency band and the transmission signals of the third frequency band for communication.

Optionally, an amplifier may be further used to amplify the transmission signal, where the amplifier is configured to amplify the transmission signal sent by the transceiver to obtain an amplified signal, and send the amplified signal to the first duplexer group. The power amplification is carried out on the signals sent by the transceiver through the amplifier, so that the requirement of sending power can be met, the signals are finally radiated to the space through the antenna, the signal level can be ensured to be received by the terminal in a certain area, and the communication of adjacent channels is not interfered.

In the first mode, steps S10 to S20 in fig. 6 are the working states of the devices in the signal transmission circuit and the processing modes of the transmitting signal and the receiving signal; in fig. 7, steps S30 to S40 are the operation states between the devices in the signal transmission circuit and the processing manner of the transmission signal and the reception signal in the second mode.

The application also provides an intelligent terminal, which comprises a memory and a processor, wherein the memory stores a signal transmission program, and the signal transmission program is executed by the processor to realize the steps of the signal transmission method in any embodiment.

The present application also provides a computer-readable storage medium having stored thereon a signal transmission program which, when executed by a processor, implements the steps of the signal transmission method in any of the above embodiments.

The embodiments of the intelligent terminal and the computer readable storage medium provided in the present application may include all the technical features of any one of the embodiments of the signal transmission method, and the expansion and explanation contents of the description are substantially the same as those of each embodiment of the method, which are not repeated herein.

The present embodiments also provide a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method in the various possible implementations as above.

The embodiments also provide a chip including a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that a device on which the chip is mounted performs the method in the above possible embodiments.

It can be understood that the above scenario is merely an example, and does not constitute a limitation on the application scenario of the technical solution provided in the embodiments of the present application, and the technical solution of the present application may also be applied to other scenarios. For example, as one of ordinary skill in the art can know, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The units in the device of the embodiment of the application can be combined, divided and pruned according to actual needs.

In this application, the same or similar term concept, technical solution, and/or application scenario description will generally be described in detail only when first appearing, and when repeated later, for brevity, will not generally be repeated, and when understanding the content of the technical solution of the present application, etc., reference may be made to the previous related detailed description thereof for the same or similar term concept, technical solution, and/or application scenario description, etc., which are not described in detail later.

In this application, the descriptions of the embodiments are focused on, and the details or descriptions of one embodiment may be found in the related descriptions of other embodiments.

The technical features of the technical solutions of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the present application.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a controlled terminal, or a network device, etc.) to perform the method of each embodiment of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, storage disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid State Disk (SSD)), among others.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims

1. A signal transmission circuit, comprising:

2. The circuit of claim 1, wherein the signal transmission circuit further comprises at least one of:

The at least one transmission end selection group comprises M transmission end selection groups and N receiving end selection groups, each transmission end selection group comprises a single first transmission end and a single second transmission end, and each receiving end selection group comprises a single first receiving end and a single second receiving end; the M first transmitting ends and the N first receiving ends are electrically connected with a transmitting interface/receiving interface of the antenna switch module;

the filter comprises a transmitting filter and a receiving filter, and the transmitting filter is connected between M second transmitting ends and target interfaces of the antenna switch module; the receiving filters are connected between N second receiving ends and target interfaces of the antenna switch module;

3. The circuit of claim 2, further comprising a transceiver, wherein M of the first diplexers and N of the second diplexers are each connected to a transmit interface/receive interface of the transceiver.

4. A circuit according to claim 3, wherein the operating frequency band of the transmit filter coincides with the operating frequency band of any of the first diplexers; and/or the working frequency band of the receiving filter is overlapped with the working frequency band of any second duplexer.

5. The circuit of claim 4, wherein the operating frequency band of the first diplexer comprises a transmit frequency band, the transmit frequency band of the first diplexer comprising the operating frequency band of the transmit filter; and/or the working frequency band of the second duplexer comprises a receiving frequency band, and the receiving frequency band of the second duplexer comprises the working frequency band of the receiving filter.

6. The circuit of claim 3, wherein the signal transmission circuit further comprises an amplifier, the amplifier being coupled to the first diplexer group and the transmit interface of the transceiver.

7. The circuit of any one of claims 2 to 6, wherein the first diplexer group comprises a first diplexer and the second diplexer group comprises a second diplexer.

8. An intelligent terminal comprising a signal transmission circuit as claimed in any one of claims 1 to 7.

9. A signal transmission method, wherein the signal transmission method is applied to the intelligent terminal according to claim 8, and the method comprises:

And/or the number of the groups of groups,

10. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the signal transmission method according to claim 9.