CN112600572B - Receiver, receiving method and related equipment - Google Patents
Receiver, receiving method and related equipment Download PDFInfo
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- CN112600572B CN112600572B CN202110232561.4A CN202110232561A CN112600572B CN 112600572 B CN112600572 B CN 112600572B CN 202110232561 A CN202110232561 A CN 202110232561A CN 112600572 B CN112600572 B CN 112600572B
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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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
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Abstract
The embodiment of the application provides a receiver, a receiving method and related equipment, which belong to the technical field of communication and specifically comprise the following steps: the system comprises a superheterodyne frequency conversion unit and a zero intermediate frequency conversion unit, wherein the zero intermediate frequency conversion unit comprises an adjustable gain amplifier and a broadband receiver; the output end of the superheterodyne frequency conversion unit is connected with the input end of an adjustable gain amplifier of the zero intermediate frequency conversion unit, and the output end of the adjustable gain amplifier is connected with the input end of a broadband receiver of the zero intermediate frequency conversion unit; the superheterodyne frequency conversion unit is used for receiving a radio-frequency signal from an antenna input end and performing frequency conversion processing on the received radio-frequency signal to obtain a first radio-frequency signal; the adjustable gain amplifier is used for adjusting the power of the first radio frequency signal to obtain a second radio frequency signal; and the broadband receiver is used for carrying out down-conversion and A/D acquisition on the second radio-frequency signal to obtain a digital signal. By the processing scheme, the size of the receiver can be reduced, the power consumption of the receiver can be reduced, and the reliability of the receiver can be improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a receiver, a receiving method, and a related device.
Background
The wireless receiving system can select useful signals from a plurality of electromagnetic waves, the useful signals are weak radio frequency signals, the weak radio frequency signals need to be amplified, interference signals are filtered and the like, the radio frequency signals are subjected to frequency conversion processing to obtain radio frequency signals with lower frequency, and the radio frequency signals are convenient to acquire and demodulate. The existing wireless receiving system comprises a receiver and the like, and the existing receiver adopts a large number of discrete devices, is low in integration level, and has the problems of large volume, large power consumption and low reliability.
Disclosure of Invention
In view of the above, embodiments of the present disclosure provide a receiver and a related device, which at least partially solve the problems in the prior art.
In a first aspect, an embodiment of the present disclosure provides a receiver, including:
the system comprises a superheterodyne frequency conversion unit and a zero intermediate frequency conversion unit, wherein the zero intermediate frequency conversion unit comprises an adjustable gain amplifier and a broadband receiver;
the output end of the superheterodyne frequency conversion unit is connected with the input end of the adjustable gain amplifier of the zero intermediate frequency conversion unit, and the output end of the adjustable gain amplifier is connected with the input end of the broadband receiver of the zero intermediate frequency conversion unit;
the superheterodyne frequency conversion unit is used for receiving a radio frequency signal from an antenna input end and performing frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal;
the adjustable gain amplifier is used for adjusting the power of the first radio frequency signal to obtain a second radio frequency signal;
and the broadband receiver is used for carrying out down-conversion and A/D acquisition on the second radio frequency signal to obtain a digital signal.
In a second aspect, the embodiment of the present disclosure further provides an electronic device, which includes the foregoing receiver.
In a third aspect, an embodiment of the present disclosure provides a receiving method, which is applied to the foregoing receiver, where the receiving method includes:
the receiver receives a radio frequency signal from an antenna input end, and performs frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal;
the receiver adjusts the power of the first radio frequency signal to obtain a second radio frequency signal;
and the receiver performs down-conversion and A/D acquisition on the second radio frequency signal to obtain a digital signal.
In a fourth aspect, an embodiment of the present disclosure further provides an electronic device, including the foregoing receiver, where the electronic device further includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any implementation of the first aspect or the first aspect.
In a fifth aspect, the disclosed embodiments also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the receiving method in the first aspect or any implementation manner of the first aspect.
In a sixth aspect, the disclosed embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the receiving method of the first aspect or any of the implementations of the first aspect.
The receiver in the embodiment of the disclosure comprises a superheterodyne frequency conversion unit and a zero intermediate frequency conversion unit, wherein the zero intermediate frequency conversion unit comprises an adjustable gain amplifier and a broadband receiver; the output end of the superheterodyne frequency conversion unit is connected with the input end of an adjustable gain amplifier of the zero intermediate frequency conversion unit, and the output end of the adjustable gain amplifier is connected with the input end of a broadband receiver of the zero intermediate frequency conversion unit; the superheterodyne frequency conversion unit is used for receiving a radio-frequency signal from an antenna input end and performing frequency conversion processing on the received radio-frequency signal to obtain a first radio-frequency signal; the adjustable gain amplifier is used for adjusting the power of the first radio frequency signal to obtain a second radio frequency signal; and the broadband receiver is used for carrying out down-conversion and A/D acquisition on the second radio-frequency signal to obtain a digital signal. According to the scheme disclosed by the invention, the superheterodyne frequency conversion unit and the zero intermediate frequency conversion unit are used in a mixed manner, so that the integration level of the receiver is improved, the volume of the receiver can be reduced, the power consumption of the receiver is reduced, and the reliability of the receiver is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structure of a receiver according to an embodiment of the present invention;
fig. 2 is another block diagram of a receiver according to an embodiment of the present invention;
fig. 3 is a flowchart of a receiving method according to an embodiment of the present invention;
fig. 4 is a structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the application provides a receiver.
Referring to fig. 1, an embodiment of the present disclosure provides a receiver 100, including:
the superheterodyne receiver comprises a superheterodyne frequency conversion unit 101 and a zero intermediate frequency conversion unit 102, wherein the zero intermediate frequency conversion unit 102 comprises an adjustable gain amplifier 12 and a broadband receiver 13; the output end of the superheterodyne frequency conversion unit 101 is connected with the input end of the adjustable gain amplifier 12 of the zero intermediate frequency conversion unit 102, and the output end of the adjustable gain amplifier 12 is connected with the input end of the broadband receiver 13 of the zero intermediate frequency conversion unit; a superheterodyne frequency conversion unit 101, configured to receive a radio frequency signal from an antenna input end, and perform frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal; the adjustable gain amplifier 12 is configured to adjust the power of the first radio frequency signal to obtain a second radio frequency signal; and the broadband receiver 13 is configured to perform down-conversion and a/D acquisition on the second radio frequency signal to obtain a digital signal.
In the present embodiment, the adjustable gain amplifier 12 can achieve the functions of amplifying the small signal power and attenuating the large signal power. The broadband receiver 13 is capable of performing direct down-conversion and a/D acquisition functions.
Therefore, the superheterodyne frequency conversion unit and the zero intermediate frequency conversion unit are used in a mixed mode, the integration level of the receiver is improved, the size of the receiver can be reduced, the power consumption of the receiver is reduced, and the reliability of the receiver is improved.
Referring to fig. 2, the superheterodyne frequency conversion unit 101 includes: a filter module 1011, a first switch module 4,
The output end of the filtering module 1011 is connected to the input end of the first switch module 4, the output end of the first switch module 4 is connected to the input end of the frequency conversion module 1012, the output end of the frequency conversion module 1012 is connected to the input end of the second switch module 11, and the output end of the second switch module 11 is connected to the input end of the adjustable gain amplifier 12.
The filtering module 1011 is configured to filter the radio frequency signal received from the antenna input end to obtain a radio frequency signal to be processed; the first switch module 4 is used for judging a target frequency range corresponding to the radio-frequency signal to be processed according to a preset frequency range, and selecting a target output port for outputting the radio-frequency signal to be processed according to the target frequency range; the frequency conversion module 1021 is used for performing frequency conversion and filtering processing on the radio-frequency signal to be processed to obtain a first radio-frequency signal; and the second switch module 11 is configured to determine a target output end of the frequency conversion module, which outputs the first radio frequency signal, and control the target output end of the frequency conversion module to be connected to the input end of the adjustable gain amplifier.
Referring again to fig. 2, the filtering module 101 includes: low noise amplifier 1, first low pass filter
2. A radio frequency amplifier 3; the output end of the low noise amplifier 1 is connected with the input end of the first low pass filter 2, the output end of the first low pass filter 2 is connected with the input end of the radio frequency amplifier 3, and the output end of the radio frequency amplifier 3 is connected with the input end of the first switch module 4.
In this embodiment, the input end of the low noise amplifier 1 is connected to the output end of the antenna, receives the weak radio frequency signal output by the output end of the antenna, and amplifies the weak radio frequency signal, where the frequency range of the weak radio frequency signal includes 20MHz to 8 GHz. The first low-pass filter 2 is configured to filter a weak radio frequency signal received from the antenna input end, filter a part of image frequency signals, and obtain a filtered radio frequency signal. And the radio frequency amplifier 3 amplifies the signal power of the filtered radio frequency signal to obtain a radio frequency signal to be processed.
Referring again to fig. 2, the frequency conversion module 1012 includes: second low-pass filter 5, first active hybrid
Frequency converter 6, first band pass filter 7, local oscillation unit 1013, high pass filter 8, second active mixer 9, second band pass filter 10. The input end of the second low-pass filter 5 is connected with the first output end of the first switch module 4, the output end of the second low-pass filter 5 is connected with the first input end of the first active mixer 6, the intermediate frequency output end of the first active mixer 6 is connected with the input end of the first band-pass filter 7, and the output end of the first band-pass filter 7 is connected with the first input end of the second switch module 11.
The input end of the high-pass filter 8 is connected with the second output end of the first switch module 4, the output end of the high-pass filter 8 is connected with the first input end of the second active mixer 9, the intermediate frequency output end of the second active mixer 9 is connected with the input end of the second band-pass filter 10, and the output end of the second band-pass filter 10 is connected with the second input end of the second switch module 11.
In this embodiment, the frequency range of the rf signal to be processed is 20MHz to 8GHz, and the first switch module 4 determines a target frequency range corresponding to the rf signal to be processed according to a preset frequency range, and selects a target output port for outputting the rf signal to be processed according to the target frequency range. For example, the first switch module 4 divides the radio frequency signal 20MHz to 8GHz into two frequency ranges, the first frequency range is 20MHz to 4GHz, the second frequency range is 4GHz to 8GHz, the first output end of the first switch module 4 is connected to the first active mixer 6, the first active mixer 6 outputs a higher intermediate frequency to meet the requirement of 200MHz bandwidth, the second output end of the first switch module 4 is connected to the second active mixer 9, and the second active mixer 9 outputs a lower intermediate frequency to meet the requirement of 200MHz bandwidth and simultaneously meet the requirement of image frequency rejection. The second switch module 11 gates each radio frequency band, that is, the first input end of the second switch module 11 is connected to the output end of the first band pass filter 7, so as to control the first band pass filter 7 to output a radio frequency signal to be processed to the adjustable gain amplifier 12, and the second input end of the second switch module 11 is connected to the output end of the second band pass filter 10, so as to control the first band pass filter 7 to output a radio frequency signal to be processed to the adjustable gain amplifier 12.
A first output terminal of the local oscillation unit 1013 is connected to a second input terminal of the first active frequency mixer 6, and a second output terminal of the local oscillation unit 1013 is connected to a second input terminal of the second active frequency mixer 9.
In this embodiment, the local oscillation unit includes: the input end of the phase-locked loop 16 is connected with the output end of the crystal oscillator 15, and the first output end of the phase-locked loop 16 is connected with the second input end of the first active mixer 6; a second output of the phase locked loop 16 is connected to a second input of the second active mixer 9.
In this embodiment, the crystal 15 provides a reference frequency for the whole receiver system, and the phase locked loop 16 generates a local oscillator frequency required for mixing.
Preferably, the first switch module comprises a first single pole double throw switch and the second switch module comprises a second single pole double throw switch.
Referring again to fig. 2, the receiver 100 further includes: the input end of the signal processing unit 14 is connected with the output end of the broadband receiver; and the signal processing unit 14 is configured to perform filtering processing on the digital signal, and calculate power corresponding to the frequency point for the filtered signal.
In this embodiment, the signal processing unit 14 receives the digital signal converted by the a/D acquisition module of the broadband receiver 13, performs filtering processing on the signal, and then performs FFT operation to calculate a power value corresponding to each frequency point. The A/D acquisition module is an analog/digital acquisition module.
Like this, the zero intermediate frequency scheme is used in the frequency conversion of the second time in this scheme, so only receive the image frequency influence in the frequency conversion of the first time, when selecting the wave filter, the suppression fall the image frequency in the frequency conversion of the first time can, the wave filter quantity reduces, the index requirement reduces, the volume dwindles. According to the scheme, the broadband receiver integrating the local oscillator unit and the A/D acquisition module is used in the second frequency conversion, the integration level is greatly improved, the size is reduced to a great extent, the power consumption is greatly reduced, and the reliability is improved.
Corresponding to the above method embodiment, referring to fig. 3, an embodiment of the present disclosure further provides a receiving method applied to the foregoing receiver, including:
step S101, a receiver receives a radio frequency signal from an antenna input end, and performs frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal;
step S102, the receiver adjusts the power of the first radio frequency signal to obtain a second radio frequency signal;
and step S103, the receiver performs down-conversion and A/D acquisition on the second radio-frequency signal to obtain a digital signal.
Preferably, step S101 includes:
the receiver filters the radio frequency signal received from the antenna input end to obtain a radio frequency signal to be processed;
the receiver judges the target frequency corresponding to the radio frequency signal to be processed according to a preset frequency range
A frequency range, selecting a target output port for outputting the radio frequency signal to be processed according to the target frequency range;
the receiver carries out frequency conversion and filtering processing on the radio frequency signal to be processed to obtain the first radio frequency signal;
the receiving method further comprises the following steps:
and the receiver judges a target output end of the frequency conversion module for outputting the first radio frequency signal and controls the target output end of the frequency conversion module to be connected with the input end of the adjustable gain amplifier.
The apparatus shown in fig. 3 may correspondingly execute the contents in the above method embodiment, and details of the part not described in detail in this embodiment refer to the contents described in the above receiver embodiment, which are not described again here.
Referring to fig. 4, an embodiment of the present disclosure further provides an electronic device 40, where the electronic device 40 includes a receiver 100, and the electronic device 40 further includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the method embodiments described above.
The disclosed embodiments also provide a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the receiving method in the aforementioned method embodiments.
The disclosed embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the receiving method in the aforementioned method embodiments.
Referring now to FIG. 4, a block diagram of an electronic device 40 suitable for use in implementing embodiments of the present disclosure is shown. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., car navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 4, the electronic device 40 may include a processing means (e.g., a central processing unit, a graphics processor, etc.) 401 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM) 402 or a program loaded from a storage means 408 into a Random Access Memory (RAM) 403. In the RAM 403, various programs and data necessary for the operation of the electronic apparatus 40 are also stored. The processing device 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
Generally, the following devices may be connected to the I/O interface 405: input devices 406 including, for example, a touch screen, touch pad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; an output device 407 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 408 including, for example, tape, hard disk, etc.; and a communication device 409. The communication device 409 may allow the electronic device 40 to communicate wirelessly or by wire with other devices to exchange data. While the figures illustrate an electronic device 40 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication device 409, or from the storage device 408, or from the ROM 402. The computer program performs the above-described functions defined in the methods of the embodiments of the present disclosure when executed by the processing device 401.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: controlling the receiver to receive a radio frequency signal from an antenna input end, and carrying out frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal; controlling the receiver to adjust the power of the first radio frequency signal to obtain a second radio frequency signal; and controlling the receiver to carry out down-conversion and A/D acquisition on the second radio-frequency signal to obtain a digital signal.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of a unit does not in some cases constitute a limitation of the unit itself, for example, the first retrieving unit may also be described as a "unit for retrieving at least two internet protocol addresses".
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (11)
1. A receiver, comprising:
the system comprises a superheterodyne frequency conversion unit and a zero intermediate frequency conversion unit, wherein the zero intermediate frequency conversion unit comprises an adjustable gain amplifier and a broadband receiver;
the output end of the superheterodyne frequency conversion unit is connected with the input end of the adjustable gain amplifier of the zero intermediate frequency conversion unit, and the output end of the adjustable gain amplifier is connected with the input end of the broadband receiver of the zero intermediate frequency conversion unit;
the superheterodyne frequency conversion unit is used for receiving a radio frequency signal from an antenna input end and performing frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal;
the adjustable gain amplifier is used for adjusting the power of the first radio frequency signal to obtain a second radio frequency signal;
the broadband receiver is configured to perform down-conversion and a/D acquisition on the second radio frequency signal to obtain a digital signal, where the superheterodyne frequency conversion unit includes: the device comprises a filtering module, a first switch module, a frequency conversion module and a second switch module;
the output end of the filtering module is connected with the input end of the first switch module, and the first switch
The output end of the module is connected with the input end of the frequency conversion module, the output end of the frequency conversion module is connected with the input end of the second switch module, and the output end of the second switch module is connected with the input end of the adjustable gain amplifier;
the filtering module is used for filtering the radio frequency signal received from the antenna input end to obtain a radio frequency signal to be processed;
the first switch module is used for judging the radio frequency signal to be processed according to a preset frequency range
Selecting a target output port for outputting the radio-frequency signal to be processed according to the target frequency range, wherein the frequency range of the radio-frequency signal to be processed is 20MHz to 8GHz, the first switch module divides the radio-frequency signal to be processed into two sections of frequency ranges, the first section of frequency range is 20MHz to 4GHz, the second section of frequency range is 4GHz to 8GHz, the first output end of the first switch module is connected with the first active mixer, the first active mixer outputs a high intermediate frequency, the second output end of the first switch module is connected with the second active mixer, and the second active mixer outputs a low intermediate frequency;
the frequency conversion module is used for carrying out frequency conversion and filtering processing on the radio frequency signal to be processed to obtain the first radio frequency signal;
the second switch module is configured to determine a target output end of the frequency conversion module, which outputs the first radio frequency signal, and control the target output end of the frequency conversion module to be connected to an input end of the adjustable gain amplifier.
2. The receiver of claim 1, wherein the filtering module comprises:
the low-noise amplifier, the first low-pass filter and the radio frequency amplifier;
the output end of the low-noise amplifier is connected with the input end of a first low-pass filter, the output end of the first low-pass filter is connected with the input end of a radio-frequency amplifier, and the output end of the radio-frequency amplifier is connected with the input end of the first switch module.
3. The receiver of claim 2, wherein the frequency conversion module comprises:
the local oscillator unit is connected with the first low-pass filter, the second active frequency mixer and the first band-pass filter;
the input end of the second low-pass filter is connected with the first output end of the first switch module, the output end of the second low-pass filter is connected with the first input end of the first active mixer, the intermediate-frequency output end of the first active mixer is connected with the input end of the first band-pass filter, and the output end of the first band-pass filter is connected with the first input end of the second switch module;
the input end of the high-pass filter is connected with the second output end of the first switch module, and the high voltage is applied to the first switch module
The output end of the pass filter is connected with the first input end of the second active mixer, the intermediate frequency output end of the second active mixer is connected with the input end of the second band-pass filter, and the output end of the second band-pass filter is connected with the second input end of the second switch module;
a first output terminal of the local oscillator unit is connected with a second input terminal of the first active mixer, so
And a second output end of the local oscillator unit is connected with a second input end of the second active frequency mixer.
4. The receiver of claim 3, wherein the local oscillation unit comprises: crystal grain
A vibrator and a phase-locked loop;
the input end of the phase-locked loop is connected with the output end of the crystal oscillator, and the first input end of the phase-locked loop
The output end of the first active mixer is connected with the second input end of the first active mixer; and the second output end of the phase-locked loop is connected with the second input end of the second active frequency mixer.
5. The receiver of claim 4, wherein the first switch module comprises a first single pole double throw switch and the second switch module comprises a second single pole double throw switch.
6. The receiver of claim 5, further comprising:
a signal processing unit:
the input end of the signal processing unit is connected with the output end of the broadband receiver;
and the signal processing unit is used for filtering the digital signal and calculating the power corresponding to the frequency point of the filtered signal.
7. An electronic device, characterized in that the electronic device comprises a receiver according to any of claims 1-6.
8. A receiving method, characterized in that it is applied to a receiver according to any one of claims 1-6, comprising:
the receiver receives a radio frequency signal from an antenna input end, and performs frequency conversion processing on the received radio frequency signal to obtain a first radio frequency signal;
the receiver adjusts the power of the first radio frequency signal to obtain a second radio frequency signal;
and the receiver performs down-conversion and A/D acquisition on the second radio frequency signal to obtain a digital signal.
9. The receiving method of claim 8, wherein the receiver receives a radio frequency signal from an antenna input, and performs frequency conversion on the received radio frequency signal to obtain a first radio frequency signal, and the method comprises:
the receiver filters the radio frequency signal received from the antenna input end to obtain a radio frequency signal to be processed;
the receiver judges the target frequency corresponding to the radio frequency signal to be processed according to a preset frequency range
A frequency range, selecting a target output port for outputting the radio frequency signal to be processed according to the target frequency range;
the receiver carries out frequency conversion and filtering processing on the radio frequency signal to be processed to obtain the first radio frequency signal;
the receiving method further comprises the following steps:
and the receiver judges a target output end of the frequency conversion module for outputting the first radio frequency signal and controls the target output end of the frequency conversion module to be connected with the input end of the adjustable gain amplifier.
10. An electronic device, characterized in that the electronic device comprises a receiver according to any of claims 1-6, the electronic device further comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the receiving method of any one of the preceding claims 8-9.
11. A non-transitory computer readable storage medium storing a program
Storing computer instructions for causing the computer to perform the receiving method of any of the preceding claims 8-9.
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