CN112968718A - Mutual interference prevention circuit and mutual interference prevention method - Google Patents
Mutual interference prevention circuit and mutual interference prevention method Download PDFInfo
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- CN112968718A CN112968718A CN201911284681.8A CN201911284681A CN112968718A CN 112968718 A CN112968718 A CN 112968718A CN 201911284681 A CN201911284681 A CN 201911284681A CN 112968718 A CN112968718 A CN 112968718A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The application discloses a mutual interference prevention circuit and a mutual interference prevention method. The circuit includes a first directional coupler for coupling an initial radio frequency signal transmitted by the transmit path, and the signal modulator is connected with the first directional coupler and used for acquiring the modulation signal and generating a signal according to the modulation parameter in the modulation signal, a first directional coupler for performing signal conditioning on the first RF signal and outputting a second RF signal, and a second directional coupler connected to the signal modulator, the circuit is used for coupling the second radio frequency signal into the receiving channel, so that the second radio frequency circuit receives a target radio frequency signal through the receiving channel, the target radio frequency signal is the radio frequency signal which is obtained by canceling the interference signal in the second radio frequency signal in the receiving channel and the current radio frequency signal received by the second radio frequency antenna, the second radio frequency signal is eliminated, the phases of the space-coupled radio frequency signal and the second radio frequency signal are different, and the communication efficiency and the use experience of a user are improved.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a mutual interference prevention circuit and a mutual interference prevention method.
Background
With the development of mobile communication, most of terminals currently have Wireless-Fidelity (WIFI) modules and Wireless Local Area Network (WLAN) functions. Therefore, the terminal has the function of simultaneously connecting the cellular network and the WLAN, namely simultaneously having the cellular communication function and the WIFI communication function. However, the operating frequency of the WIFI module is adjacent to some common frequency BANDs for cellular communication, such as BAND40 and BAND38, and some harmonics of the cellular communication frequency BAND are close to or coincide with the WIFI frequency BAND. Due to the fact that the size of the terminal is limited, the distance between the antenna for cellular communication and the antenna for WIFI communication is not enough, the antenna for cellular communication and the antenna for WIFI communication can interfere with each other when working simultaneously, and performances of the two kinds of communication are affected. At present, only two kinds of communication can work in a time-sharing mode in order to avoid mutual interference, so that the communication efficiency is reduced, and the use experience of a user is also reduced.
Disclosure of Invention
The embodiment of the application provides a mutual interference prevention circuit and a mutual interference prevention method, which solve the problems in the prior art and improve the communication efficiency and the use experience of users.
In a first aspect, an anti-mutual interference circuit is provided, which may include:
the first directional coupler is used for coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna;
the signal modulator is connected with the first directional coupler and used for acquiring a modulation signal, performing signal regulation on a first radio-frequency signal coupled out by the first directional coupler according to a modulation parameter in the modulation signal and outputting a second radio-frequency signal;
and the second directional coupler is connected with the signal modulator and is used for coupling the second radio-frequency signal into a receiving channel of a second radio-frequency circuit and a second radio-frequency antenna, wherein the first radio-frequency circuit and the second radio-frequency circuit have the same or similar frequency bands, so that the second radio-frequency circuit receives a target radio-frequency signal through the receiving channel, and the target radio-frequency signal is a radio-frequency signal which is obtained by performing signal cancellation on the second radio-frequency signal in the receiving channel and a radio-frequency signal which is spatially coupled in a current radio-frequency signal received by the second radio-frequency antenna, so that the second radio-frequency signal is eliminated.
In an alternative implementation, the spatially coupled radio frequency signal is out of phase with the second radio frequency signal.
In an alternative implementation, the signal modulator includes an adjustable attenuator and a phase shifter:
a first input end of the adjustable attenuator receives an amplitude control signal, a second input end of the adjustable attenuator is connected with an output end of the first directional coupler and used for carrying out amplitude adjustment on a first radio-frequency signal according to an amplitude control parameter in the amplitude control signal, and an output end of the adjustable attenuator outputs the amplitude-adjusted first radio-frequency signal;
a first input end of the phase shifter receives a phase control signal, a second input end of the phase shifter is connected with an output end of the adjustable attenuator and is used for adjusting the phase of the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal, and an output end of the phase shifter outputs a second radio-frequency signal.
In an optional implementation, the modulation parameter is obtained by calculating, by the signal modulator, a distance between a configuration parameter of the initial radio frequency signal sent by the first radio frequency circuit and the first radio frequency antenna and the second radio frequency antenna by using a preset coupling degree algorithm.
In an optional implementation, the signal modulator is specifically configured to obtain modulation parameters corresponding to different modulation signals, and perform signal conditioning on a first radio frequency signal coupled by the first directional coupler according to the different modulation signals, and output a second different radio frequency signal;
the second directional coupler is specifically configured to couple the different second radio frequency signals into the receiving path, so that the second radio frequency circuit receives different target radio frequency signals through the receiving path.
In an alternative implementation, the spatially coupled radio frequency signals are 180 ° out of phase with the second radio frequency signals;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
In a second aspect, a method for preventing mutual interference is provided, and the method may include:
coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna to obtain a first radio frequency signal;
performing signal regulation on the first radio frequency signal according to the obtained modulation parameter in the modulation signal to obtain a second radio frequency signal;
and coupling the second radio frequency signal into a receiving channel of a second radio frequency circuit and a second radio frequency antenna, wherein the first radio frequency circuit and the second radio frequency circuit have the same or similar frequency bands, so that the second radio frequency circuit receives a target radio frequency signal through the receiving channel, and the target radio frequency signal is a radio frequency signal obtained by performing signal cancellation on the second radio frequency signal in the receiving channel and a radio frequency signal which is spatially coupled in the current radio frequency signal received by the second radio frequency antenna.
In an alternative implementation, the spatially coupled radio frequency signal is out of phase with the second radio frequency signal.
In an alternative implementation, the modulation signal includes an amplitude control signal and a phase control signal;
according to the modulation parameter in the obtained modulation signal, performing signal conditioning on the first radio frequency signal to obtain a second radio frequency signal, including:
according to the amplitude control parameter in the amplitude control signal, carrying out amplitude adjustment on the first radio frequency signal to obtain an amplitude-adjusted first radio frequency signal;
and carrying out phase adjustment on the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal to obtain the second radio-frequency signal.
In an optional implementation, the modulation parameter is obtained by calculating, by the signal modulator, a distance between a configuration parameter of the initial radio frequency signal sent by the first radio frequency circuit and the first radio frequency antenna and the second radio frequency antenna by using a preset coupling degree algorithm.
In an optional implementation, performing signal conditioning on the first radio frequency signal according to a modulation parameter in the obtained modulation signal to obtain a second radio frequency signal, includes:
respectively carrying out signal regulation on the first radio frequency signals according to the obtained modulation parameters corresponding to different modulation signals to obtain different second radio frequency signals;
and respectively coupling the different second radio frequency signals into the receiving paths, so that the second radio frequency circuit receives different target radio frequency signals through the receiving paths.
In an alternative implementation, the spatially coupled radio frequency signals are 180 ° out of phase with the second radio frequency signals;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
In a third aspect, an electronic device is provided, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any of the above second aspects when executing a program stored in the memory.
In a fourth aspect, a computer-readable storage medium is provided, having stored therein a computer program which, when executed by a processor, carries out the method steps of any of the above second aspects.
The anti-mutual interference circuit provided by the embodiment of the invention comprises a first directional coupler used for coupling an initial radio frequency signal sent by a first radio frequency circuit and a sending channel of a first radio frequency antenna, a signal modulator connected with the first directional coupler and used for acquiring a modulation signal, carrying out signal regulation on the first radio frequency signal coupled out by the first directional coupler according to a modulation parameter in the modulation signal and outputting a second radio frequency signal, and a second directional coupler connected with the signal modulator and used for coupling the second radio frequency signal into a channel for receiving the second radio frequency circuit and a second radio frequency antenna, wherein the first radio frequency circuit and the second radio frequency circuit have the same or similar frequency band so that the second radio frequency circuit receives a target radio frequency signal through a receiving channel, the target radio frequency signal carries out signal cancellation on the radio frequency signal which is coupled between the second radio frequency signal and a current radio frequency signal received by the second radio frequency antenna in the receiving channel, the obtained radio frequency signal for eliminating the second radio frequency signal can greatly reduce the intensity of the interference signal, improve the electromagnetic compatibility between the two, and improve the communication efficiency and the use experience of a user.
Drawings
Fig. 1 is a structural diagram of a terminal structure applying an anti-mutual-interference circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an anti-crosstalk circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another anti-crosstalk circuit according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a mutual interference prevention method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without any creative effort belong to the protection scope of the present application.
Fig. 1 is a structural diagram of a terminal structure applying an anti-crosstalk circuit according to an embodiment of the present invention. The terminal may be a User Equipment (UE) such as a Mobile phone, a smart phone, a laptop, a digital broadcast receiver, a Personal Digital Assistant (PDA), a tablet computer (PAD), a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem, a Mobile Station (MS), or the like.
The terminal comprises a first radio frequency circuit, a second radio frequency circuit, an anti-mutual interference circuit, a first radio frequency antenna and a second radio frequency antenna.
The first radio frequency circuit and the first radio frequency antenna form a first communication channel through a communication wire, the second radio frequency circuit and the second radio frequency antenna form a second communication channel through a communication wire, and the anti-mutual-interference circuit is connected between the first communication channel and the second communication channel.
The first radio frequency circuit and the second radio frequency circuit are used for realizing two different types of wireless communication, such as WIFI communication and cellular communication, and the same or similar frequency bands exist in the first radio frequency circuit and the second radio frequency circuit.
The anti-mutual interference circuit is used for coupling a part of interference in the first radio frequency circuit and the second radio frequency circuit and canceling the interference signal received by the antenna, so that the strength of the interference signal is greatly reduced, and the electromagnetic compatibility between the first radio frequency circuit and the second radio frequency circuit is improved.
When the first radio frequency circuit transmits an initial radio frequency signal by using a frequency band which is the same as or close to that of the second radio frequency circuit, and the second radio frequency circuit receives a current radio frequency signal by using a corresponding frequency band, the second radio frequency antenna connected with the second radio frequency circuit receives a part of the initial radio frequency signal which is spatially coupled from the first radio frequency antenna connected with the first radio frequency circuit to the second radio frequency antenna (the antenna of the second radio frequency circuit), wherein the part of the initial radio frequency signal which is spatially coupled is an interference signal doped in the current radio frequency signal.
The following description will take the application of the anti-mutual interference circuit between the transmission path of the first rf circuit and the first rf antenna and the reception path of the second rf circuit and the second rf antenna as an example.
Fig. 2 is a schematic structural diagram of an anti-crosstalk circuit according to an embodiment of the present invention. As shown in fig. 2, the anti-mutual interference circuit may include: a first directional coupler 210, a signal modulator 220, and a second directional coupler 230.
A first directional coupler 210, configured to couple an initial radio frequency signal sent by a first radio frequency circuit and a transmission path of a first radio frequency antenna;
the signal modulator 220 is connected to the first directional coupler 210, and configured to acquire a modulation signal, perform signal conditioning on a first radio frequency signal coupled out by the first directional coupler 210 according to a modulation parameter in the modulation signal, and output a second radio frequency signal;
and a second directional coupler 230 connected to the signal modulator 220 for coupling the second rf signal output by the signal modulator 220 into a receive path of the second rf circuit and the second rf antenna.
The first radio frequency circuit and the second radio frequency circuit have the same or similar frequency bands.
Therefore, the second rf circuit receives the target rf signal through the receiving path, the target rf signal is a rf signal (or "interference signal") that is spatially coupled in the current rf signal received by the second rf antenna and the second rf signal in the receiving path, and the obtained rf signal from which the second rf signal is canceled is obtained, and the phases of the spatially coupled rf signal and the second rf signal are different.
Optionally, in order to reduce interference of the interference signals in the receiving paths of the second rf circuit and the second rf antenna to the second rf circuit, different modulation signals may be continuously obtained, so that the interference signals in the current rf signal received in the receiving path may be cancelled to different degrees.
The signal modulator is specifically configured to obtain modulation parameters corresponding to different modulation signals, perform signal conditioning on first radio-frequency signals coupled by the first directional coupler according to the different modulation signals, and output different second radio-frequency signals;
the second directional coupler is specifically configured to couple different second radio frequency signals into the receiving path, so that the second radio frequency circuit receives different target radio frequency signals through the receiving path.
It can be understood that, by detecting the received signal strength of the second rf circuit or detecting the error rate of the received signal of the second rf circuit, the strength of the interference signal received by the second rf circuit can be obtained, and if the received signal strength is smaller or the error rate of the received signal is smaller, the interference signal in the target rf signal received by the second rf circuit is smaller.
Or, in order to reduce the interference of the interference signal in the receiving path between the second radio frequency circuit and the second radio frequency antenna to the second radio frequency circuit, the signal modulator may use a preset coupling degree algorithm to calculate the configuration parameter of the initial radio frequency signal sent by the first radio frequency circuit and the distance between the first radio frequency antenna and the second radio frequency antenna, so as to obtain the modulation parameter corresponding to the modulation signal, thereby performing signal conditioning on the first radio frequency signal and outputting the corresponding second radio frequency signal.
Further, the signal modulator may include an adjustable attenuator and a phase shifter.
The first input end of the adjustable attenuator receives the amplitude control signal, the second input end of the adjustable attenuator is connected with the output end of the first directional coupler and used for carrying out amplitude adjustment on the first radio-frequency signal according to the amplitude control parameter in the amplitude control signal, and the output end of the adjustable attenuator outputs the first radio-frequency signal after amplitude adjustment;
the first input end of the phase shifter receives the phase control signal, the second input end of the phase shifter is connected with the output end of the adjustable attenuator and used for carrying out phase adjustment on the amplitude-adjusted first radio-frequency signal according to the phase control parameter in the phase control signal, and the output end of the phase shifter outputs a second radio-frequency signal.
It can be understood that, in order to ensure that the second rf circuit receives the target rf signal without interference, the modulation signal may be adjusted such that the phase of the spatially coupled rf signal is 180 ° different from the phase of the second rf signal, and the signal amplitude of the spatially coupled rf signal is equal to the signal amplitude of the second rf signal, specifically: adjusting an amplitude control parameter in the amplitude control signal to make a signal amplitude of the spatially coupled radio frequency signal equal to a signal amplitude of the second radio frequency signal, and adjusting a phase control parameter in the phase control signal to make a phase difference between the spatially coupled radio frequency signal and the phase of the second radio frequency signal 180 °.
It should be noted that, the above description is performed by using the first radio frequency circuit to transmit the initial radio frequency signal and the second radio frequency circuit to receive the current radio frequency signal, and for the second radio frequency circuit to transmit the initial radio frequency signal and the first radio frequency circuit to receive the current radio frequency signal, the execution process of the circuit is similar to the above process, and details are not repeated herein in the embodiments of the present invention.
In one example, the first rf circuit is a cellular communication rf circuit, and the second rf circuit is a WIFI rf circuit, and the mutual interference prevention circuit may be as shown in fig. 3:
when the cellular communication radio frequency circuit and the WIFI radio frequency circuit work simultaneously, and the cellular communication radio frequency circuit transmits an initial radio frequency signal through the cellular communication antenna, and the WIFI radio frequency circuit receives a current radio frequency signal through the WIFI communication antenna, the directional coupler 1 couples out a part of the initial radio frequency signal transmitted by the cellular communication radio frequency circuit, i.e. a first radio frequency signal, which is input to the adjustable attenuator 1 and the phase shifter 1 in the anti-mutual interference circuit, so as to adjust the phase and amplitude of the first radio frequency signal according to the amplitude control signal I1 received by the adjustable attenuator 1 and the phase control signal Q1 received by the phase shifter 1, output a second radio frequency signal, combine the second radio frequency signal into a receiving channel corresponding to the WIFI radio frequency circuit through the directional coupler 2, and couple the second radio frequency signal with a cellular communication signal (or "interference signal") from the cellular communication antenna to the WIFI antenna, thereby greatly reducing the intensity of the interference signal and improving the electromagnetic compatibility between the two.
Meanwhile, when the cellular communication radio frequency circuit and the WIFI radio frequency circuit work simultaneously, and the cellular communication radio frequency circuit receives a current radio frequency signal through the cellular communication antenna, and the WIFI radio frequency circuit transmits an initial radio frequency signal through the WIFI communication antenna, the directional coupler 2 couples out a part of a WIFI transmission signal, that is, a first radio frequency signal, inputs the first radio frequency signal into the adjustable attenuator 2 and the phase shifter 2 in the anti-mutual interference circuit, so as to adjust the phase and amplitude of the first radio frequency signal according to the amplitude control signal I2 received by the adjustable attenuator 2 and the phase control signal Q2 received by the phase shifter 2, outputs a second radio frequency signal, combines the second radio frequency signal into a receiving path corresponding to the cellular communication radio frequency circuit through the directional coupler 1, cancels the second radio frequency signal with the WIFI signal coupled from the WIFI antenna to the cellular communication antenna, and further greatly reduces the intensity of an interference signal, improving the electromagnetic compatibility between the two.
Corresponding to the foregoing method, an embodiment of the present invention further provides a mutual interference prevention method, as shown in fig. 4, where the method may include:
step 410, coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna to obtain a first radio frequency signal.
And step 420, performing signal conditioning on the first radio frequency signal according to the obtained modulation parameter in the modulation signal to obtain a second radio frequency signal.
Step 430, coupling the second rf signal into a receiving path of the second rf circuit and the second rf antenna, where the first rf circuit and the second rf circuit have the same or similar frequency band, so that in the receiving path, the second rf signal and the spatially coupled rf signal in the current rf signal received by the second rf antenna perform signal cancellation.
Wherein the spatially coupled rf signal is obtained by coupling the second rf antenna from the initial rf signal emitted from the first rf antenna, and the spatially coupled rf signal has a different phase from the second rf signal.
In an alternative implementation, the modulation signal includes an amplitude control signal and a phase control signal;
according to the modulation parameter in the obtained modulation signal, performing signal conditioning on the first radio frequency signal to obtain a second radio frequency signal, including:
according to the amplitude control parameter in the amplitude control signal, carrying out amplitude adjustment on the first radio frequency signal to obtain an amplitude-adjusted first radio frequency signal;
and carrying out phase adjustment on the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal to obtain the second radio-frequency signal.
In an optional implementation, the modulation parameter is obtained by calculating a distance between a configuration parameter of the initial radio frequency signal sent by the first radio frequency circuit and the first radio frequency antenna and the second radio frequency antenna by using a preset coupling degree algorithm.
In an optional implementation, performing signal conditioning on the first radio frequency signal according to a modulation parameter in the obtained modulation signal to obtain a second radio frequency signal, includes:
respectively carrying out signal regulation on the first radio frequency signals according to the obtained modulation parameters corresponding to different modulation signals to obtain different second radio frequency signals;
and respectively coupling the different second radio frequency signals into the receiving paths, so that in the receiving paths, the different second radio frequency signals respectively perform signal cancellation with the radio frequency signals which are spatially coupled in the current radio frequency signals received by the second radio frequency antenna.
In an alternative implementation, the spatially coupled radio frequency signals are 180 ° out of phase with the second radio frequency signals;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
The anti-mutual interference circuit provided by the embodiment of the invention comprises a first directional coupler used for coupling an initial radio frequency signal sent by a first radio frequency circuit and a sending channel of a first radio frequency antenna, a signal modulator connected with the first directional coupler and used for acquiring a modulation signal, carrying out signal regulation on the first radio frequency signal coupled out by the first directional coupler according to a modulation parameter in the modulation signal and outputting a second radio frequency signal, and a second directional coupler connected with the signal modulator and used for coupling the second radio frequency signal into a receiving channel of a second radio frequency circuit and a second radio frequency antenna, wherein the first radio frequency circuit and the second radio frequency circuit have the same or similar frequency band so that the second radio frequency circuit receives a target radio frequency signal through the receiving channel, the target radio frequency signal carries out signal cancellation on a radio frequency signal which is coupled between the second radio frequency signal and a current radio frequency signal received by the second radio frequency antenna in the receiving channel, the obtained radio frequency signal for eliminating the second radio frequency signal can greatly reduce the intensity of the interference signal, improve the electromagnetic compatibility between the two, and improve the communication efficiency and the use experience of a user.
An embodiment of the present invention further provides an electronic device, as shown in fig. 5, including a processor 510, a communication interface 520, a memory 530 and a communication bus 540, where the processor 510, the communication interface 520, and the memory 530 complete mutual communication through the communication bus 540.
A memory 530 for storing a computer program;
the processor 510, when executing the program stored in the memory 530, implements the following steps:
and coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna to obtain a first radio frequency signal.
And according to the modulation parameters in the obtained modulation signal, performing signal regulation on the first radio frequency signal to obtain a second radio frequency signal.
And coupling the second radio frequency signal into a receiving channel of a second radio frequency circuit and a second radio frequency antenna, wherein the first radio frequency circuit and the second radio frequency circuit have the same or similar frequency bands, so that in the receiving channel, the second radio frequency signal and the radio frequency signal which is spatially coupled in the current radio frequency signal received by the second radio frequency antenna are subjected to signal cancellation.
Wherein the spatially coupled rf signal is obtained by coupling the second rf antenna from the initial rf signal emitted from the first rf antenna, and the spatially coupled rf signal has a different phase from the second rf signal.
In an alternative implementation, the modulation signal includes an amplitude control signal and a phase control signal;
according to the modulation parameter in the obtained modulation signal, performing signal conditioning on the first radio frequency signal to obtain a second radio frequency signal, including:
according to the amplitude control parameter in the amplitude control signal, carrying out amplitude adjustment on the first radio frequency signal to obtain an amplitude-adjusted first radio frequency signal;
and carrying out phase adjustment on the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal to obtain the second radio-frequency signal.
In an optional implementation, the modulation parameter is obtained by calculating a distance between a configuration parameter of the initial radio frequency signal sent by the first radio frequency circuit and the first radio frequency antenna and the second radio frequency antenna by using a preset coupling degree algorithm.
In an optional implementation, performing signal conditioning on the first radio frequency signal according to a modulation parameter in the obtained modulation signal to obtain a second radio frequency signal, includes:
respectively carrying out signal regulation on the first radio frequency signals according to the obtained modulation parameters corresponding to different modulation signals to obtain different second radio frequency signals;
and respectively coupling the different second radio frequency signals into the receiving paths, so that in the receiving paths, the different second radio frequency signals respectively perform signal cancellation with the radio frequency signals which are spatially coupled in the current radio frequency signals received by the second radio frequency antenna.
In an alternative implementation, the spatially coupled radio frequency signals are 180 ° out of phase with the second radio frequency signals;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
The aforementioned communication bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
Since the implementation manner and the beneficial effects of the problem solving of each device of the electronic device in the above embodiment can be realized by referring to each step in the embodiment shown in fig. 4, detailed working processes and beneficial effects of the electronic device provided by the embodiment of the present invention are not described herein again.
In another embodiment of the present invention, a computer-readable storage medium is further provided, which stores instructions that, when executed on a computer, cause the computer to perform the mutual interference prevention method described in any of the above embodiments.
In yet another embodiment, a computer program product containing instructions is provided, which when run on a computer, causes the computer to perform the mutual interference prevention method as described in any of the above embodiments.
As will be appreciated by one of skill in the art, the embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present application.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the embodiments of the present application and their equivalents, the embodiments of the present application are also intended to include such modifications and variations.
Claims (14)
1. An anti-crosstalk circuit, comprising:
the first directional coupler is used for coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna;
the signal modulator is connected with the first directional coupler and used for acquiring a modulation signal, performing signal regulation on a first radio-frequency signal coupled out by the first directional coupler according to a modulation parameter in the modulation signal and outputting a second radio-frequency signal;
and the second directional coupler is connected with the signal modulator and is used for coupling the second radio-frequency signal into a receiving channel of a second radio-frequency circuit and a second radio-frequency antenna, wherein the first radio-frequency circuit and the second radio-frequency circuit have the same or similar frequency bands, so that the second radio-frequency circuit receives a target radio-frequency signal through the receiving channel, and the target radio-frequency signal is a radio-frequency signal which is obtained by performing signal cancellation on the second radio-frequency signal in the receiving channel and a radio-frequency signal which is spatially coupled in a current radio-frequency signal received by the second radio-frequency antenna, so that the second radio-frequency signal is eliminated.
2. The circuit of claim 1, wherein the spatially coupled radio frequency signal is out of phase with the second radio frequency signal.
3. The circuit of claim 1, wherein the signal modulator comprises an adjustable attenuator and a phase shifter:
a first input end of the adjustable attenuator receives an amplitude control signal, a second input end of the adjustable attenuator is connected with an output end of the first directional coupler and used for carrying out amplitude adjustment on a first radio-frequency signal according to an amplitude control parameter in the amplitude control signal, and an output end of the adjustable attenuator outputs the amplitude-adjusted first radio-frequency signal;
a first input end of the phase shifter receives a phase control signal, a second input end of the phase shifter is connected with an output end of the adjustable attenuator and is used for adjusting the phase of the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal, and an output end of the phase shifter outputs a second radio-frequency signal.
4. The circuit of claim 1, wherein the modulation parameter is calculated by the signal modulator using a predetermined coupling algorithm based on a distance between a configuration parameter of the first rf circuit for transmitting the initial rf signal and the first rf antenna and the second rf antenna.
5. The circuit of claim 1,
the signal modulator is specifically configured to acquire modulation parameters corresponding to different modulation signals, perform signal conditioning on first radio-frequency signals coupled out by the first directional coupler according to the different modulation signals, and output different second radio-frequency signals;
the second directional coupler is specifically configured to couple the different second radio frequency signals into the receiving path, so that the second radio frequency circuit receives different target radio frequency signals through the receiving path.
6. The circuit of claim 2,
the phase of the spatially coupled radio frequency signal is 180 ° out of phase with the second radio frequency signal;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
7. A method for preventing crosstalk, the method comprising:
coupling the initial radio frequency signal sent by the first radio frequency circuit and the sending channel of the first radio frequency antenna to obtain a first radio frequency signal;
performing signal regulation on the first radio frequency signal according to the obtained modulation parameter in the modulation signal to obtain a second radio frequency signal;
and coupling the second radio frequency signal into a receiving channel of a second radio frequency circuit and a second radio frequency antenna so that the second radio frequency circuit receives a target radio frequency signal through the receiving channel, wherein the first radio frequency circuit and the second radio frequency circuit have the same or similar frequency bands, and the target radio frequency signal is a radio frequency signal obtained by performing signal cancellation on the second radio frequency signal in the receiving channel and a radio frequency signal which is spatially coupled in a current radio frequency signal received by the second radio frequency antenna.
8. The method of claim 7, wherein the spatially coupled radio frequency signal is out of phase with the second radio frequency signal.
9. The method of claim 7, wherein the modulation signal comprises an amplitude control signal and a phase control signal;
according to the modulation parameter in the obtained modulation signal, performing signal conditioning on the first radio frequency signal to obtain a second radio frequency signal, including:
according to the amplitude control parameter in the amplitude control signal, carrying out amplitude adjustment on the first radio frequency signal to obtain an amplitude-adjusted first radio frequency signal;
and carrying out phase adjustment on the amplitude-adjusted first radio-frequency signal according to a phase control parameter in the phase control signal to obtain the second radio-frequency signal.
10. The method of claim 7, wherein the modulation parameter is obtained by calculating a distance between a configuration parameter of the first rf circuit for transmitting the initial rf signal and the first rf antenna and the second rf antenna by using a predetermined coupling algorithm of the signal modulator.
11. The method of claim 7,
according to the modulation parameter in the obtained modulation signal, performing signal conditioning on the first radio frequency signal to obtain a second radio frequency signal, including:
respectively carrying out signal regulation on the first radio frequency signals according to the obtained modulation parameters corresponding to different modulation signals to obtain different second radio frequency signals;
and respectively coupling the different second radio frequency signals into the receiving paths, so that the second radio frequency circuit receives different target radio frequency signals through the receiving paths.
12. The method of claim 8,
the phase of the spatially coupled radio frequency signal is 180 ° out of phase with the second radio frequency signal;
the signal amplitude of the spatially coupled radio frequency signal is equal to the signal amplitude of the second radio frequency signal.
13. An electronic device, characterized in that the electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any of claims 7-12 when executing a program stored on a memory.
14. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any of the claims 7-12.
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