CN214480597U

CN214480597U - Multifunctional radio frequency module

Info

Publication number: CN214480597U
Application number: CN202120755781.0U
Authority: CN
Inventors: 韩国栋; 张宙; 杨国栋; 齐宏业; 吴杰; 董培松; 高冲; 刘扬; 段永强
Original assignee: CETC 54 Research Institute
Current assignee: CETC 54 Research Institute
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-10-22
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a multifunctional radio frequency module belongs to electronic information technical field. The utility model comprises a plurality of basic multifunctional radio frequency units and N +1 multi-channel synthesis networks; one of the N +1 multi-channel synthesis networks is a multi-channel synthesis network with a time-sharing working mode, and the other N multi-channel synthesis networks are multi-channel synthesis networks with a simultaneous working mode. The utility model discloses a working method with the timesharing when frequency diversity, through the reasonable device that sets up the radio frequency front end in radio frequency circuit, carry out frequency diversity, but partial frequency work is in the timesharing system, but another partial frequency work simultaneous system has effectively realized the selection of while with the timesharing work, integrates multiple mode of operation again in same active radio frequency module, has reduced equipment quantity, has effectively improved the availability factor.

Description

Multifunctional radio frequency module

Technical Field

The utility model relates to an electronic information technical field especially indicates a multifunctional radio frequency module, can be used to in radar, the observing and controlling, reconnaissance and the communication integration equipment.

Background

In the field of traditional electronic information, the working mode of simultaneous and time-sharing has a plurality of realization modes, which are characterized in that:

1. the radio frequency branches which work in a time-sharing way and at the same time are physically separated, namely, the radio frequency branches are radio frequency modules with different physical configurations. By classifying and designing different working modes, different antennas can work in different working modes without or with less passive isolation devices such as duplexers or switches or circulators. From the physical aspect, it is a simple physical separation of the different modes of radio frequency announcement. The method has the defects of small technical difficulty, equipment separation and low integration level.

2. Meanwhile, the antenna is designed with the time-sharing mode, but the frequency has no diversity. The mode can be realized through a certain integration level, the same set of antenna equipment can work under signals of different systems, but the diversity characteristic of the frequency is not obvious, and when the antenna equipment works in a time-sharing mode, part of signals cannot work simultaneously. That is, when operating simultaneously, some signals cannot operate in a time-sharing manner. This system reduces the utilization rate of the equipment, and even under the specific requirements of a certain system, the normal operation of the system can not be started.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a multifunctional radio frequency module, it has the realization thinking that is different from prior art simultaneously with the timesharing completely, can realize the working method with the timesharing when the frequency can be divided.

In order to realize the above purpose, the utility model discloses the technical scheme who adopts is:

a multifunctional radio frequency module comprises a plurality of basic multifunctional radio frequency units and N +1 multichannel synthesis networks, wherein N is more than or equal to 2; the method is characterized in that one of the N +1 multi-channel synthesis networks is a multi-channel synthesis network with a time-sharing working mode, and the other N multi-channel synthesis networks are multi-channel synthesis networks with simultaneous working modes; the multi-channel synthesis network in the time-sharing working mode and the multi-channel synthesis network in the simultaneous working mode are both provided with a plurality of branch ports, and the plurality of branch ports of each multi-channel synthesis network are in one-to-one correspondence with the plurality of basic multifunctional radio frequency units;

the basic multifunctional radio frequency unit comprises a multiplexer, a time-sharing working branch, a frequency selection branch, a frequency amplification branch, a combiner and a multi-path amplitude-phase control module, wherein the multi-path amplitude-phase control module is provided with an input end and N output ends;

the time-sharing working branch comprises a first switch, a first low-noise amplifier, a power amplifier chip, a second switch and an amplitude-phase control module; a public port of the first switch is connected with a first radio frequency branch port of the multiplexer, an output port of the first switch is connected with an input port of the first low noise amplifier, an input port of the first switch is connected with an output port of the power amplifier chip, an output port of the first low noise amplifier is connected with an input port of the second switch, an input port of the power amplifier chip is connected with an output port of the second switch, a public port of the second switch is connected with an input/output port at one side of the amplitude and phase control module, and an input/output port at the other side of the amplitude and phase control module is connected with a corresponding branch port of the time-sharing working mode multichannel synthesis network;

the frequency selection branch comprises a second low noise amplifier, a duplexer, a third switch and a load; the third switch is a double-pole double-throw switch and is provided with two input ports and two output ports; an input port of the second low-noise amplifier is connected with a second radio frequency branch port of the multiplexer, an output port of the second low-noise amplifier is connected with an input port of the duplexer, two output ports of the duplexer are respectively and correspondingly connected with two input ports of the third switch, one output port of the duplexer is connected with a load, and the other output port of the duplexer is connected with one input end of the combiner;

the frequency amplification branch comprises a third low-noise amplifier, the input end of the third low-noise amplifier is connected with a third radio frequency interface of the multiplexer, and the output end of the third low-noise amplifier is connected with the other input end of the combiner;

the output end of the combiner is connected with the input end of the multi-path amplitude and phase control module, and the N output ends of the multi-path amplitude and phase control module are correspondingly connected with the corresponding shunt ports of the N multi-channel synthesis networks in the simultaneous working mode one by one.

The utility model discloses compare the background art and have following advantage:

1. the utility model discloses an active radio frequency module of frequency diversity has realized multiple mode, can realize the unity of radio frequency circuit on the physical form, has avoided the separately design of physics effectively.

2. The utility model discloses a signal system under the different modes of different frequency work can satisfy the independent work of different types of signals, has the advantage of high integration level in physics.

3. The utility model discloses a signal control is simple, can compatible the overwhelming majority present radio frequency and control terminal.

Drawings

Fig. 1 is a schematic diagram of a multifunctional rf module according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, a multifunctional radio frequency module includes a plurality of basic multifunctional radio frequency units and N +1 multi-channel synthesis networks, where N is greater than or equal to 2; one of the N +1 multi-channel synthesis networks is a multi-channel synthesis network in a time-sharing working mode and is used for frequency f1, the other N multi-channel synthesis networks in a simultaneous working mode are used for frequencies f2, f3 and f4, and f1, f2, f3 and f4 are different; the basic multifunctional radio frequency unit comprises a multiplexer 14, a time-sharing working branch, a frequency selection branch, a frequency amplification branch, a combiner 12 and a multi-path amplitude-phase control module 13.

In the basic multifunctional rf unit, the rf common port of the multiplexer 14 is connected to an external antenna unit, the first rf branch port of the multiplexer 14 is connected to the rf common port of the first switch 15, the second rf branch port of the multiplexer 14 is connected to the input port of the second low noise amplifier 07, and the third rf branch port of the multiplexer 14 is connected to the input port of the third low noise amplifier 09.

The time-sharing working branch of the basic transceiving radio frequency branch unit comprises a first switch 15, a first low noise amplifier 03, a power amplifier chip 04, a second switch 05 and an amplitude-phase control module 06.

The first radio frequency port of the first switch 15 is connected to the first low noise amplifier 03, and the second radio frequency port is connected to the output port of the power amplifier chip 04. A signal input port of the power amplifier chip 04 is connected with an output port of the second switch 05, and an input port of the second switch 05 is connected with an output port of the amplitude-phase control module 06; the output port of the first low noise amplifier 03 is connected with the input port of the second switch 05, the output port of the second switch 05 is connected with the input port of the amplitude-phase control module 06, and the amplitude-phase control module 06 transmits and receives signals with the outside.

The frequency selection branch of the basic transceiving radio frequency branch unit comprises a second low noise amplifier 07, a duplexer 08, a third switch 10 and a load 11.

A signal output port of the second low noise amplifier 07 is connected to an input port of the duplexer 08, a first output port and a second output port of the duplexer 08 are respectively connected to two input ports of the third switch 10, a first output port of the third switch 10 is connected to the load 11, and a second output port is connected to a first input port of the combiner 12.

The frequency amplification branch comprises a third low-noise amplification chip 09; an output port of the third low-noise amplifier chip 09 is connected with a second input port of the combiner 12;

the output port of the combiner 12 is connected with the input ports of the multiple paths of amplitude and phase control modules 13, and the multiple paths of output ports of the multiple paths of amplitude and phase control modules 13 are respectively connected to the receiving signals 1-N.

When receiving signals, the multiplexer receives broadband radio-frequency signals from an external antenna through a radio-frequency common port, and divides the broadband signals into four frequencies, namely f1, f2, f3 and f4, wherein the signals with the frequency f1 are sent to the time-sharing working branch through a first radio-frequency branch port of the multiplexer, the signals with the frequencies f2 and f4 are sent to the frequency selection branch through a second radio-frequency branch port of the multiplexer, and the signals with the frequency f3 are sent to the frequency amplification branch through a third radio-frequency branch port of the multiplexer;

in the time-sharing working branch, a signal is output to a first low-noise amplifier for amplification after being gated by a first switch, then is output to an amplitude-phase control module through a second switch for phase and amplitude control of the signal, and then enters a multi-channel synthesis network in a time-sharing working mode;

in the frequency selection branch, the two signals enter a second low noise amplifier for amplification, then enter a duplexer for signal diversity, and the two signals after diversity enter a third switch respectively; the third switch is a double-pole double-throw switch, one of the f2 and f4 frequencies can be preset to be an idle signal frequency, the other one is an operating signal frequency, an idle signal is output to a load, and an operating signal is output to the combiner;

in the frequency amplification branch, the signal is amplified by a third low noise amplifier and then output to a combiner;

the combiner combines the signals sent by the frequency selection branch and the frequency amplification branch and outputs the signals to the multi-path amplitude-phase control module, and the multi-path amplitude-phase control module divides the input signals into N paths of radio frequency signals after performing phase and amplitude control on the signals and sends the signals to N multi-channel synthesis networks with simultaneous working modes in a one-to-one correspondence manner; each multi-channel synthesis network respectively synthesizes and outputs respective input signals;

when a signal is transmitted, a transmitting signal with the frequency f1 enters a multichannel synthesis network with a time-sharing working mode, and the multichannel synthesis network performs equal power division or unequal power division on the signal to obtain multiple paths of power division signals corresponding to the basic multifunctional radio frequency units one to one; in each basic multifunctional radio frequency unit, a power division signal enters an amplitude-phase control module of a time-sharing working branch circuit to carry out phase shift or attenuation, carries out amplitude-phase control, enters a power amplifier chip after being gated by a second switch, enters a first radio frequency branch port of a multiplexer through a first switch, and is transmitted out through a radio frequency common port of the multiplexer.

The amplitude and phase control module can adopt a multifunctional chip with an amplitude and phase control function, and the multipath amplitude and phase control module can adopt a multipath multifunctional chip with an amplitude and phase control function.

The working principle of the module is as follows:

the broadband radio frequency signal firstly enters a multiplexer, and the broadband signal is divided into f1, f2, f3 and f4 according to the frequency. The frequency f1 works in a time-sharing working mode, and the frequencies f2, f3 and f4 work in a frequency-selectable simultaneous working mode.

The transmitting signal of the time-sharing mode frequency f1 is firstly subjected to signal power division through a power divider, enters an amplitude-phase control module of the signal to control the phase and the amplitude of the signal, passes through a filter, enters a switch, enters a power amplifier chip to amplify the signal, enters a multiplexer through a radio frequency switch and then outputs the signal; the signal with the frequency f1 enters a switch for output, then enters a low noise amplifier, enters an amplitude-phase control module through a switch link for phase and amplitude control of the signal, and then enters a synthesis network for signal synthesis and then signal output.

The frequency selectable simultaneous operation mode is implemented at frequencies f2, f3, f 4.

The receiving signals with the frequencies f2 and f4 firstly enter an amplifier for amplification, enter a duplexer for signal diversity, and simultaneously enter a switch, one path of signal is selected to be connected with a load, namely the frequency does not work, and the other path of signal enters a combiner; the received signal with frequency f3 firstly enters an amplifier for amplification, then enters a combiner, shares the combiner with the frequency signal of f2 or f4, enters a multi-path amplitude-phase control module for signal phase and amplitude control, the signal is divided into a plurality of paths of radio frequency signals in the multi-path amplitude-phase control module, and enters respective signal synthesis networks for signal synthesis, and the subsequent signals are divided in frequency through digitization or filtering.

Based on the signal flow, the time-sharing working mode with the frequency f1 can be realized, and simultaneously, the selectable simultaneous working modes with other frequencies can be realized.

In a word, the utility model discloses have multiple mode, the multiplexer can carry out the diversity to required signal, and one of them part frequency channel is timesharing work, and another part frequency channel is the duplex mode of selectable frequency. In the time-sharing working mode of partial frequency band, the transmitting and receiving signals are subjected to transmitting and receiving circuit diversity through a circulator or a switch, and are switched according to the working requirement; in the duplex working mode with selectable frequency, signals with different frequencies respectively enter respective radio frequency branches, signals with one part of frequencies are subjected to working mode selection through a duplexer and a switch, and signals with the other part of frequencies enter the own radio frequency branches and are synthesized with signals with other frequencies, and phase shifting and attenuation of the signals are carried out through an amplitude-phase control module.

Therefore, the utility model discloses a through setting up different frequencies, but active radio frequency module of simultaneous working or timesharing work can be arranged in digit and the mixed antenna of simulation and system, is particularly suitable for in the multiple functions composite application's the electronic information field.

It is thus clear that the utility model discloses a frequency can be when diversity and the working method of timesharing, through the reasonable device that sets up the radio frequency front end in radio frequency circuit, carry out frequency diversity, but partial frequency work is in the timesharing system, but another partial frequency work simultaneous system has effectively realized the selection of working simultaneously with the timesharing, integrates multiple mode of operation again in same active radio frequency module, has reduced equipment quantity, has effectively improved the availability factor. The module can be used in a multifunctional integrated phased array antenna for communication, measurement and control, radar and the like, effectively compatible with various signals of different working systems, and has important significance in practical engineering application.

Claims

1. A multifunctional radio frequency module comprises a plurality of basic multifunctional radio frequency units and N +1 multichannel synthesis networks, wherein N is more than or equal to 2; the method is characterized in that one of the N +1 multi-channel synthesis networks is a multi-channel synthesis network with a time-sharing working mode, and the other N multi-channel synthesis networks are multi-channel synthesis networks with simultaneous working modes; the multi-channel synthesis network in the time-sharing working mode and the multi-channel synthesis network in the simultaneous working mode are both provided with a plurality of branch ports, and the plurality of branch ports of each multi-channel synthesis network are in one-to-one correspondence with the plurality of basic multifunctional radio frequency units;