WO2021223121A1

WO2021223121A1 - Bidirectional multi-frequency amplifier, transceiver, control method and storage medium

Info

Publication number: WO2021223121A1
Application number: PCT/CN2020/088840
Authority: WO
Inventors: 王一皿
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-11-11
Also published as: CN113016145A

Abstract

Disclosed are a bidirectional multi-frequency amplifier (100), a transceiver, a control method and a storage medium. The bidirectional multi-frequency amplifier (100) comprises: an amplification circuit (10), comprising a plurality of amplifiers (11), wherein the plurality of amplifiers (11) can amplify a plurality of transmitting signals and/or receiving signals in different frequency bands; and a control circuit (20) for performing switching according to the entry direction and entry frequency band of an entry signal entering the amplification circuit (10), so that the amplifiers (11) in the amplification circuit (10) that can amplify the entry signal amplify the entry signal, with the entry direction being a transmission direction or a reception direction.

Description

Multi-frequency bidirectional amplifier, transceiver, control method and storage medium

Technical field

This application relates to the field of circuit technology, and in particular to a multi-frequency bidirectional amplifier, transceiver, control method and storage medium.

Background technique

Two-way power amplifiers are often used to extend the communication distance for time-division duplex communication systems (such as drones and local wireless networks). Different from ordinary power amplifiers, two-way power amplifiers have the function of identifying the working status of the system, which can determine whether the system is working in receiving or transmitting status, and intelligently choose to amplify the received signal or the transmitted signal, thereby simultaneously improving the receiving performance and transmitting power of the system, and expanding communication distance.

With the development of communication technology, time division duplex communication systems with multi-band working capabilities continue to emerge. For example, technologies such as wireless local area networks currently generally have dual-frequency operation capabilities (typically, such as supporting dual-frequency operation of 2400-2483MHz and 5750-5850MHz at the same time). The current two-way power amplifier only has the ability to work in a single narrow frequency band, and cannot work well with the new multi-band communication system to achieve functions.

Summary of the invention

Based on this, the present application provides a multi-frequency bidirectional amplifier, transceiver, control method, and storage medium.

In the first aspect, this application provides a multi-frequency bidirectional amplifier, including:

The amplifying circuit includes a plurality of amplifiers, and the plurality of amplifiers can amplify transmission signals and/or received signals of a plurality of different frequency bands;

The control circuit is used to switch according to the entry direction and the entry frequency band of the entry signal entering the amplifying circuit, so that the amplifier capable of amplifying and processing the entry signal in the amplifying circuit amplifies the entry signal, and the entry The direction is the transmitting direction or the receiving direction.

In the second aspect, the present application provides a transceiver, which includes the above-mentioned multi-frequency bidirectional amplifier.

In a third aspect, the present application provides a method for controlling a multi-frequency bidirectional amplifier, the method including:

The control circuit receives the detection result of the detection circuit;

The control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifier capable of amplifying and processing the entry signal in the amplifying circuit performs amplifying processing on the entry signal, The entering direction is the transmitting direction or the receiving direction.

In a fourth aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes the above-mentioned multi-frequency bidirectional The control method of the amplifier.

The embodiments of the present application provide a multi-frequency bidirectional amplifier, a transceiver, a control method, and a storage medium, including: an amplifier circuit, including a plurality of amplifiers, and the plurality of amplifiers can transmit signals and/or transmission signals in a plurality of different frequency bands. The received signal is amplified; the control circuit is used to switch according to the direction and frequency band of the incoming signal entering the amplifying circuit, so that the amplifier in the amplifying circuit that can amplify and process the incoming signal performs processing on the incoming signal For amplifying processing, the entering direction is a transmitting direction or a receiving direction. Since the amplifying circuit includes a plurality of amplifiers capable of amplifying transmission signals and/or received signals of multiple different frequency bands, the control circuit can switch according to the direction and frequency band of the incoming signal entering the amplifying circuit, so that the amplifying circuit The amplifier capable of amplifying and processing the incoming signal amplifies the incoming signal. In this way, it is possible to amplify the transmitted signal and/or the received signal of multiple different frequency bands.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of an embodiment of a multi-frequency bidirectional amplifier of the present application;

2 is a schematic structural diagram of another embodiment of the multi-frequency bidirectional amplifier of the present application;

FIG. 3 is a schematic structural diagram of another embodiment of the multi-frequency bidirectional amplifier of the present application;

4 is a schematic structural diagram of another embodiment of the multi-frequency bidirectional amplifier of the present application;

FIG. 5 is a schematic structural diagram of another embodiment of a multi-frequency bidirectional amplifier according to the present application;

6 is a schematic structural diagram of another embodiment of the multi-frequency bidirectional amplifier of the present application;

FIG. 7 is a schematic diagram of the logical structure of an application of the multi-frequency bidirectional amplifier of the present application;

Fig. 8 is a schematic diagram of the logic structure of another application of the multi-frequency bidirectional amplifier of the present application.

Description of main components and symbols:

100. Multi-frequency bidirectional amplifier; 10. Amplifying circuit; 11. Amplifier; 111. Power amplifier; 112. Multi-band broadband low-noise amplifier; 20. Control circuit; 21. Direction control sub-circuit; 211. Direction determination sub-circuit; 212 , Direction selection switch; 22. Frequency band control sub-circuit; 221, Frequency band selection switch; 30, Detector circuit; 31, Detector sub-circuit; 311, Band pass filter; 312, Detector; 40, Power divider.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The flowchart shown in the drawings is only an example, and does not necessarily include all contents and operations/steps, nor does it have to be executed in the described order. For example, some operations/steps can also be decomposed, combined or partially combined, so the actual execution order may be changed according to actual conditions.

Two-way power amplifiers are often used to extend the communication distance for time-division duplex communication systems (such as drones and local wireless networks). With the development of communication technology, time division duplex communication systems with multi-band working capabilities continue to emerge. The current two-way power amplifier only has the ability to work in a single narrow frequency band, and cannot work well with the new multi-band communication system to achieve functions.

In the embodiment of the present application, the multi-frequency bidirectional amplifier includes: an amplifying circuit, including multiple amplifiers, and the multiple amplifiers can amplify transmission signals and/or received signals of multiple different frequency bands; The entering direction of the incoming signal of the circuit and the entering frequency band are switched, so that the amplifier that can amplify and process the incoming signal in the amplifying circuit amplifies the incoming signal, and the incoming direction is the transmitting direction or the receiving direction. Since the amplifying circuit includes a plurality of amplifiers capable of amplifying transmission signals and/or received signals of multiple different frequency bands, the control circuit can switch according to the direction and frequency band of the incoming signal entering the amplifying circuit, so that the amplifying circuit The amplifier capable of amplifying and processing the incoming signal amplifies the incoming signal. In this way, it is possible to amplify the transmitted signal and/or the received signal of multiple different frequency bands.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of an embodiment of a multi-frequency bidirectional amplifier of the present application. The multi-frequency bidirectional amplifier of an embodiment of the present application can amplify transmission signals and/or received signals of multiple different frequency bands.

The multi-frequency bidirectional amplifier 100 includes: an amplifier circuit 10 and a control circuit 20.

The amplifying circuit 10 includes a plurality of amplifiers 11, and the plurality of amplifiers 11 can amplify transmission signals and/or received signals of a plurality of different frequency bands.

The control circuit 20 is electrically connected to the amplifying circuit 10 for switching according to the direction and frequency band of the incoming signal entering the amplifying circuit 10, so that the amplifier 11 in the amplifying circuit 10 that can amplify and process the incoming signal amplifies the incoming signal and enters The direction is the transmitting direction or the receiving direction.

The transmitted signal is the signal whose entering direction is the transmitting direction, which is usually the signal transmitted by the transmitting source, and the received signal is the signal whose entering direction is the receiving direction, and is usually the signal received by the antenna.

In order to be able to amplify and process signals with two different entry directions, the transmission signal and/or the reception signal, the amplifying circuit 10 generally needs to include two amplifiers 11, one for amplifying the transmission signal and the other for amplifying the reception signal. deal with. Generally speaking, the requirements for the amplifying processing of the transmitted signal and the amplifying processing of the received signal are different. The amplifying processing of the transmitted signal usually adopts a power amplifier (PA). The PA is used for signal output amplification and is obtained from the circuit A strong signal has a very high signal-to-noise ratio (SNR) and must be used to increase signal power. The amplifying processing of the received signal usually uses a low noise amplifier (LNA). The LNA is used to amplify the input of the antenna. It obtains extremely weak uncertain signals from the antenna. These signals are usually signals of the order of microvolts or lower. -100 dBm, and then amplify the signal to a more useful level, usually about 0.5 to 1V. LNA focuses on noise figure and gain (of course linearity is also important), and is mainly used for the front end of the receiving link. Is to improve reception performance. Generally, the magnification of LAN is much smaller than that of PA.

The number of amplifiers 11 is also related to the need for amplifying signals of different frequency bands. If a multi-frequency amplifier that can be integrated is used, the number of amplifiers 11 in the amplifying circuit 10 can be relatively small. If a single narrow-band amplifier is used, one amplifier It can only amplify and process signals in one frequency band, and the number of amplifiers 11 in the amplifying circuit 10 can be relatively larger. From the current point of view, the cost of integrating power amplifiers of multiple frequency bands into an ultra-wideband power amplifier will be relatively high (the cost is more than 5 times higher under the same performance conditions), and some technical difficulties are relatively large; It is relatively easy to integrate the low-noise amplifiers of different frequency bands, and the cost is lower than that of multiple different single narrow-frequency low-noise amplifiers, and the circuit structure can be simplified, and the performance benefit is high. Of course, multiple bidirectional power amplifiers of different frequency bands can also be selected, each bidirectional power amplifier amplifies and processes the transmitted signal and/or received signal of the frequency band, and multiple bidirectional power amplifiers of different frequency bands are arranged in parallel to form an amplifier circuit. The number of amplifiers and the selection of specific types can be determined according to specific practical applications and specific requirements, and are not limited here.

The specific connection relationship between the control circuit 20 and the amplifying circuit 10 needs to be determined according to the number of amplifiers in the amplifying circuit and the selection of specific types, which is not limited here, as long as the control circuit 20 can be based on the entry direction of the entry signal into the amplifying circuit 10 and The input frequency band is switched, so that the amplifier 11 in the amplifying circuit 10 that can amplify and process the input signal can amplify the input signal.

For example, under the control of the control circuit, the amplifying circuit can amplify and process the transmitted and received signals of frequency band 1, frequency band 2; another example, under the control of the control circuit, the amplifying circuit can amplify and process frequency band 1, frequency band 2, and frequency band 3. Transmit and receive signals.

The multi-frequency bidirectional amplifier 100 of the embodiment of the present application includes: an amplifier circuit 10, including a plurality of amplifiers 11, and the plurality of amplifiers 11 can amplify transmission signals and/or received signals of a plurality of different frequency bands; a control circuit 20 uses Switching is performed according to the direction and frequency band of the incoming signal entering the amplifying circuit 10, so that the amplifier 11 in the amplifying circuit 10 capable of amplifying and processing the incoming signal amplifies the incoming signal, and the incoming direction is the transmitting direction or the receiving direction. Since the amplifying circuit 10 includes a plurality of amplifiers 11 capable of amplifying transmission signals and/or received signals of multiple different frequency bands, the control circuit 20 can switch according to the entering direction and frequency band of the incoming signal entering the amplifying circuit 10, The amplifier 11 capable of amplifying and processing the incoming signal in the amplifying circuit 10 performs amplifying processing on the incoming signal. In this way, a plurality of transmission signals and/or received signals of different frequency bands can be amplified.

Since the incoming signal into the amplifying circuit can be a transmitted signal or a received signal, the frequency band of the incoming signal is also variable. The time for the transmitted signal and/or the received signal to enter the amplifying circuit is usually not a fixed time, and is not affected by multi-frequency two-way The control of the amplifier, in order to determine the incoming signal's incoming direction and the incoming frequency band, it is necessary to detect the incoming signal, and detect the incoming signal's incoming direction and incoming frequency band.

With reference to FIG. 2, in one embodiment, the multi-frequency bidirectional amplifier further includes: a detection circuit 30.

The detection circuit 30 is electrically connected to the control circuit 20, and is used for detecting the incoming signal to determine the incoming direction of the incoming signal and the incoming frequency band.

The detection circuit 30 is usually set in at least one of the two entry directions. Depending on the type of amplifier 11 selected in the amplifying circuit 10, the detection circuit 30 may only detect the incoming signal in the transmitting direction or only the incoming signal in the receiving direction. Of course, it is also possible to detect both the incoming signal in the transmitting direction and the incoming signal in the receiving direction.

Wherein, the entry direction includes the launch direction. When the detection circuit 30 detects the entry signal, it indicates that the entry signal is a transmission signal, and further detects the entry frequency band of the entry signal. The control circuit 20 determines that the entry signal is a transmission signal according to the entry signal, and combines it with the entry frequency band. The power amplifier in the amplifying circuit 10 that can amplify and process the incoming frequency band and the transmitted signal is turned on.

Wherein, the entering direction includes the transmitting direction. When the detecting circuit 30 does not detect the incoming signal, it means that there is no signal in the transmitting direction, and the incoming signal is the receiving signal in the receiving direction. The control circuit 20 determines that the incoming signal is the receiving signal, and the amplifying circuit 10 can be turned on. A low-noise amplifier that amplifies and processes the received signal. If the amplifying circuit 10 adopts a multi-band broadband low-noise amplifier that integrates low-noise amplifiers for amplifying received signals in multiple frequency bands, there is no need to determine the specific frequency band of the received signal at this time. Since multi-band broadband low-noise amplifiers are more common and low in cost, when multi-band broadband low-noise amplifiers can be used in practical applications, the amplifying circuit 10 uses multi-band broadband low-noise amplifiers; and multi-band broadband low-noise amplifiers can also be used. Simplify the circuit structure of the multi-frequency bidirectional amplifier.

Wherein, the incoming direction includes the receiving direction. When the detection circuit 30 detects the incoming signal, it indicates that the incoming signal is a received signal, and further detects the incoming frequency band of the incoming signal. The control circuit 20 determines that the incoming signal is a received signal according to the incoming signal, and combines it with the incoming frequency band. The turn-on amplifier circuit 10 can amplify and process the low noise amplifier that enters the frequency band and the received signal.

Wherein, the incoming direction includes the receiving direction. When the detection circuit 30 does not detect the incoming signal, it means that there is no signal in the receiving direction, and the incoming signal is the transmitting signal in the transmitting direction. The control circuit 20 determines that the incoming signal is the transmitting signal, and the amplifying circuit 10 can be turned on. A power amplifier that amplifies and processes the transmitted signal. Although the multi-band broadband transmission power amplifier integrated with the power amplifiers of multiple frequency bands is relatively expensive and relatively rare, if the amplifying circuit 10 adopts the multi-band broadband transmission power amplifier, there is no need to determine the specific frequency band of the transmission signal at this time.

If the amplifying circuit 10 uses multiple power amplifiers of different single frequency bands and multiple low noise amplifiers of different single frequency bands, the detection circuit 30 needs to detect both the incoming signal in the transmitting direction and the incoming signal in the receiving direction to determine the transmitted signal. The specific frequency band and the specific frequency band of the received signal.

If the incoming signal has only one signal, the incoming signal needs to be divided into multiple sub-signals to enter the amplifying circuit 10 and the detecting circuit 30 respectively. As shown in FIG. 2, the multi-frequency bidirectional amplifier 100 further includes a power divider 40. The power divider 40 includes an input port and a plurality of output ports, and the plurality of output ports are electrically connected to the amplifier circuit 10 and the detection circuit 30 respectively.

The input port of the power divider 40 may be electrically connected to the transmission source, and the detection circuit 30 can detect the transmission signal at this time. The input port of the power divider 40 may also be electrically connected to the antenna, and the detection circuit 30 can detect the received signal at this time.

Among them, the power divider 40 includes a broadband power divider. Using a broadband power divider can simplify the circuit of the multi-frequency bidirectional amplifier 100.

3, in an embodiment, the detection circuit 30 includes a plurality of detection sub-circuits 31 of different frequency bands, and the plurality of detection sub-circuits 31 of different frequency bands are respectively electrically connected to a plurality of output ports of the power divider 40, each The detection sub-circuit 31 of the frequency band can detect the signal of the frequency band.

Further, referring to FIG. 4 in combination, each detector sub-circuit 31 includes a band pass filter 311 and a detector 312.

A band-pass filter (Band-Pass Filter, BPF) 311 is used to pass signals in a certain frequency band, but signals outside the frequency band cannot pass; the detector 312 is used to detect signals that have passed through the band-pass filter 311. The signal that can pass through the band-pass filter 311 must be detected by the wave detector 312 correspondingly. If the signals are filtered by the band-pass filter 311, the detector cannot detect the signal.

For example, the detection sub-circuit includes three detection sub-circuits of frequency band 1, frequency band 2, and frequency band 3. In the detection sub-circuit of frequency band 1, the band-pass filter corresponding to frequency band 1 can pass the signal of frequency band 1, and make the signals outside of frequency band 1. If the signal cannot pass, the detector corresponding to frequency band 1 can detect the signal of frequency band 1. In the detector sub-circuit of frequency band 2, the band-pass filter corresponding to frequency band 2 can pass the signal of frequency band 2, and the signal outside of frequency band 2 cannot pass. , The detector corresponding to frequency band 2 can detect the signal of frequency band 2; in the detection sub-circuit of frequency band 3, the band-pass filter corresponding to frequency band 3 can pass the signal of frequency band 3, so that signals other than frequency band 3 cannot pass, and frequency band 3 The corresponding detector can detect the frequency band 3 signal.

With reference to FIG. 5, the control circuit 20 needs to switch according to the incoming direction of the incoming signal and the incoming frequency band. In one embodiment, the control circuit 20 includes a direction control sub-circuit 21 and a frequency band control sub-circuit 22.

The direction control sub-circuit 21 is electrically connected to the detection circuit 30 for determining the incoming direction of the incoming signal, and turns on the amplifier in the amplifying circuit 10 that can amplify and process the incoming signal according to the incoming direction; the frequency band control sub-circuit 22 and the detection circuit 30 The electrical connection is used to determine the incoming frequency band of the incoming signal, and turn on the amplifier in the amplifying circuit 10 capable of amplifying and processing the incoming signal in the frequency band according to the incoming frequency band.

Specifically, referring to FIG. 6 in combination, the direction control sub-circuit 21 includes a direction determination sub-circuit 211 and a direction selection switch 212.

The direction determination sub-circuit 211 is electrically connected to the detection circuit 30 for determining the direction of entry of the incoming signal; the direction selection switch 212 is electrically connected to the direction determination sub-circuit 211, and the direction selection switch 212 is respectively provided at both ends of the amplifier 11 for The entering direction leads to the transmitting direction or the receiving direction.

In this embodiment, the number of direction selection switches 212 includes at least two. It can be that one direction selection switch 212 is provided at both ends of each amplifier 11, or one direction selection switch is provided at both ends of multiple amplifiers 11 respectively. 212.

Wherein, the direction determining sub-circuit 211 includes an OR circuit. The OR circuit has multiple input terminals and one output terminal. As long as one of the inputs is high (logic "1"), the output is high (logic "1"); only when all inputs are low Level (logic "0"), the output is low (logic "0"). As long as the detector circuit 30 detects the incoming signal (high level), regardless of the frequency band of the incoming signal, the input of the OR circuit will have a high level and the output will be high; as long as the detector circuit 30 does not detect When the input signal (low level) is reached, that is, no signal in any frequency band is detected, and the input of the OR circuit is all low level, the output is low level.

The frequency band control sub-circuit 22 includes a frequency band selection switch 221. The frequency band selection switch 221 is electrically connected to the detection circuit 30. The frequency band selection switch 221 is respectively arranged at both ends of the amplifier 11 to determine the incoming frequency band of the incoming signal and conduct the incoming frequency band.

The frequency band selection switch 221 can be a frequency band corresponding to one selection switch (on or off), multiple frequency bands require multiple corresponding selection switches, and the selection switches corresponding to each frequency band are respectively set at both ends of each amplifier 11; frequency band selection The switch 221 may also integrate multiple selection switches of different frequency bands into one switch to become a single-pole n-throw frequency band selection switch, and the single-pole n-throw frequency band selection switch is arranged at both ends of the multiple amplifiers 11.

Further, in order to simplify the circuit structure of the multi-frequency bidirectional amplifier as much as possible, the frequency band selection switch 221 includes two single-pole n-throw frequency selection switches, two single-pole n-throw frequency selection switches are electrically connected to the detection circuit 30, and two single-pole n-throw frequency selection switches The switches are respectively provided at both ends of the plurality of amplifiers 11.

The number of the direction selection switches 212 is two, and the two direction selection switches 212 are respectively arranged at the outer ends of the two single-pole n-throw frequency band selection switches, and are respectively connected in series with the two single-pole n-throw frequency band selection switches.

Among them, the two single-pole n-throw frequency selection switches and the two direction selection switches are radio frequency switches.

In an actual application, the amplifying circuit 10 includes a plurality of power amplifiers 111 of different frequency bands and a multi-band broadband low-noise amplifier 112. Multiple power amplifiers 111 of different frequency bands are arranged in parallel, and the power amplifier 111 of each frequency band can amplify the frequency band and the transmitted signal; the multi-band broadband low-noise amplifier 112 is arranged in parallel with the single-pole n-throw frequency selection switch, and is selected with the direction The switches 212 are arranged in series, and the multi-band broadband low-noise amplifier 112 can amplify multiple frequency bands and received signals. In this way, the circuit structure of the multi-frequency bidirectional amplifier can be simplified to the greatest extent, and the cost is relatively low.

One scenario where multiple frequency bands are used frequently is two frequency bands. For example, technologies such as wireless local area networks currently generally have dual-frequency operation capabilities, such as supporting dual-frequency operation in both the 2.4GHz frequency band (2400-2483MHz) and the 5.8GHz frequency band (5750-5850MHz).

Please refer to FIG. 7, which is a schematic diagram of the logical structure of an application of the multi-frequency bidirectional amplifier of the present application. The power divider uses a 2-6G broadband power divider (abbreviated as 2-6G broadband power distribution in the figure); the detection circuit includes a 2.4GHz band pass filter (abbreviated as BPF) and a detector (abbreviated as 2.4 in the figure) GHz BPF and detection), 5.8 GHz band pass filter (BPF) and detector (abbreviated as 5.8 GHz BPF and detection in the figure); the direction determination sub-circuit is an OR gate circuit (also called an OR gate), which is used to determine Transmit direction (Transmit, abbreviated as T or Tx) or receive direction (Receive, abbreviated as R or Rx); the direction selection switch is the transmission or reception selection switch (abbreviated as Tx/Rx selection switch in the figure); amplifies and processes the transmitted signal The power amplifiers are 2.4GHz power amplifier (abbreviated as 2.4GHz PA in the figure) and 5.8GHz power amplifier (abbreviated as 5.8GHz PA in the figure), which are controlled by the frequency band selection switch; the amplifier for amplifying and processing the received signal is 2-6GHz Broadband low noise amplifier (abbreviated as 2-6GHz broadband LNA in the figure).

The dual-frequency two-way amplifier of the embodiment of the present application can work in cooperation with the currently widely used dual-frequency time division duplex communication system, and can improve its communication performance effect. The dual-frequency bidirectional amplifier of the embodiment of the present application can achieve dual-band coverage under the controllable condition of increased cost, wider coverage frequency bands and scenarios, stronger adaptability and compatibility, and can increase the communication distance of the dual-frequency time division duplex communication system by more than 3 times .

Please refer to FIG. 8, which is a schematic diagram of the logic structure of another application of the multi-frequency bidirectional amplifier of the present application.

The power divider uses a broadband power divider (abbreviated as broadband power distribution in the figure); the detection circuit includes a band pass filter (abbreviated as BPF) and detector (abbreviated as frequency band 1 BPF and detector in the figure), Band 2 band pass filter (BPF) and detector (abbreviated as band 2 BPF and detector in the figure),..., band pass filter (BPF) and detector of band n (abbreviated as band n BPF and detector in the figure) Detection); The direction determination sub-circuit is an n-way transceiver control circuit, which is used to determine the transmission direction (Transmit, T or Tx) or the receiving direction (Receive, R or Rx); the direction selection switch is the transmission or reception selection switch (Abbreviated as Tx/Rx selector switch in the figure); the power amplifiers for amplifying and processing the transmitted signal are the power amplifier of band 1 (abbreviated as band 1 PA in the figure) and the power amplifier of band 2 (abbreviated as band 2 PA in the figure) ,..., the power amplifier of frequency band n (abbreviated as frequency band n PA in the figure), is controlled by the single-pole n throw frequency selection switch; the amplifier that amplifies and processes the received signal is a multi-band broadband low-noise amplifier (abbreviated as multi-band broadband LNA in the figure) ).

Another application scenario for multi-band is three-band radar. These three bands can be L-band (1-2 GHz), S-band (2--4 GHz) and X-band (8-12 GHz); it can also be UHF-band (0.3-3 GHz), S-band (2--4 GHz), C-band radar (4～8 GHz).

The present application also provides a transceiver, which includes the multi-frequency bidirectional amplifier as described above. For a detailed description of the multi-frequency two-way amplifier, please refer to the above content, which will not be repeated here.

The present application also provides a computer-readable storage medium that stores a computer program. When the computer program is executed by a processor, the processor realizes the control method of the multi-frequency bidirectional amplifier described in any one of the following items. For a detailed description of the relevant content, please refer to the relevant content section above, which will not be repeated here.

The control method includes: the control circuit receives the detection result of the detection circuit; the control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and switching to enable the amplifying process in the amplifying circuit The amplifier of the incoming signal amplifies the incoming signal, and the incoming direction is a transmitting direction or a receiving direction.

Wherein, the entering direction includes the launching direction.

Wherein, the control circuit determines that the incoming signal is a transmission signal according to the detection result, and combines the incoming frequency band to turn on a power amplifier capable of amplifying and processing the incoming frequency band and the transmission signal in the amplifying circuit.

Wherein, the control circuit determines that the incoming signal is a received signal according to the detection result, and turns on a low-noise amplifier capable of amplifying and processing the received signal in the amplifying circuit.

Wherein, the entering direction includes a receiving direction.

Wherein, the control circuit determines that the incoming signal is a received signal according to the detection result, and combines the incoming frequency band to turn on a low-noise amplifier capable of amplifying and processing the incoming frequency band and the received signal in the amplifying circuit.

Wherein, the control circuit determines that the incoming signal is a transmission signal according to the detection result, and turns on a power amplifier capable of amplifying and processing the transmission signal in the amplifying circuit.

Wherein, the computer-readable storage medium may be an internal storage unit of the above-mentioned multi-frequency bidirectional amplifier, such as a hard disk or a memory. The computer-readable storage medium may also be an external storage device of the above-mentioned multi-frequency bidirectional amplifier, such as an equipped plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, and so on.

It should be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application.

It should also be understood that the term "and/or" used in the specification and appended claims of this application refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

The above are only specific embodiments of this application, but the protection scope of this application is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed in this application. Modifications or replacements, these modifications or replacements shall be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A multi-frequency bidirectional amplifier, characterized in that it comprises:

The amplifying circuit includes a plurality of amplifiers, and the plurality of amplifiers can amplify transmission signals and/or received signals of a plurality of different frequency bands;

The control circuit is used to switch according to the entry direction and the entry frequency band of the entry signal entering the amplifying circuit, so that the amplifier capable of amplifying and processing the entry signal in the amplifying circuit amplifies the entry signal, and the entry The direction is the transmitting direction or the receiving direction.
The multi-frequency bidirectional amplifier according to claim 1, further comprising:

The detection circuit is used to detect the incoming signal to determine the incoming direction and the incoming frequency band of the incoming signal.
The multi-frequency bidirectional amplifier according to claim 2, wherein the entering direction includes a transmitting direction.
The multi-frequency bidirectional amplifier according to claim 3, wherein when the detection circuit detects the incoming signal and the incoming frequency band of the incoming signal, the control circuit determines the incoming signal according to the incoming signal In order to transmit a signal, the power amplifier capable of amplifying and processing the entering frequency band and the transmitting signal in the amplifying circuit is turned on in combination with the entering frequency band.
The multi-frequency bidirectional amplifier according to claim 3, wherein when the detection circuit does not detect the incoming signal, the control circuit determines that the incoming signal is a received signal, and turns on the amplifier circuit to be able to A low-noise amplifier for amplifying and processing the received signal.
The multi-frequency bidirectional amplifier according to claim 2, wherein the entering direction includes a receiving direction.
The multi-frequency bidirectional amplifier according to claim 6, wherein when the detection circuit detects the incoming signal and the incoming frequency band of the incoming signal, the control circuit determines the incoming signal according to the incoming signal In order to receive the signal, the low-noise amplifier capable of amplifying and processing the entering frequency band and the received signal is turned on in the amplifying circuit in combination with the entering frequency band.
The multi-frequency bidirectional amplifier according to claim 6, wherein when the detection circuit does not detect the incoming signal, the control circuit determines that the incoming signal is a transmission signal, and the amplifier circuit can be turned on. A power amplifier for amplifying and processing the transmission signal.
The multi-frequency bidirectional amplifier according to claim 2, further comprising:

The power divider includes one input port and multiple output ports.
The multi-frequency bidirectional amplifier according to claim 9, wherein the power divider comprises a broadband power divider.
The multi-frequency bidirectional amplifier according to claim 9, wherein the detection circuit comprises:

A plurality of detection sub-circuits of different frequency bands, and the detection sub-circuits of each frequency band can detect the signal of the frequency band.
The multi-frequency bidirectional amplifier according to claim 11, wherein each of the detection sub-circuits comprises:

Band-pass filter, used to pass signals in a certain frequency band, but make the signals outside the frequency band incapable of passing;

The detector is used to detect the signal after passing through the band pass filter.
The multi-frequency bidirectional amplifier according to claim 2, wherein the control circuit comprises:

A direction control sub-circuit, configured to determine the entering direction of the incoming signal, and turn on the amplifier in the amplifying circuit capable of amplifying and processing the signal of the entering direction according to the entering direction;

The frequency band control sub-circuit is used to determine the incoming frequency band of the incoming signal, and turn on the amplifier in the amplifying circuit capable of amplifying and processing the incoming frequency signal according to the incoming frequency band.
The multi-frequency bidirectional amplifier according to claim 13, wherein the direction control sub-circuit comprises:

A direction determining sub-circuit is used to determine the entering direction of the entering signal;

Direction selection switches, respectively arranged at both ends of the amplifier, for turning on the transmitting direction or the receiving direction according to the entering direction;

The frequency band control sub-circuit includes:

Frequency band selection switches are respectively arranged at both ends of the amplifier and used to determine the incoming frequency band of the incoming signal and turn on the incoming frequency band.
The multi-frequency bidirectional amplifier according to claim 14, wherein the frequency band selection switch comprises:

Two single-pole n-throw frequency selection switches are respectively arranged at both ends of the multiple amplifiers;

The number of the direction selection switches is two, and the two direction selection switches are respectively arranged at the outer ends of the two single-pole n-throw frequency band selection switches, and are respectively connected in series with the two single-pole n-throw frequency band selection switches.
The multi-frequency bidirectional amplifier according to claim 15, wherein the amplifying circuit comprises:

A plurality of power amplifiers of different frequency bands are arranged in parallel, and the power amplifier of each frequency band can amplify the frequency band and the transmission signal;

A multi-band broadband low-noise amplifier is arranged in parallel with the single-pole n-throw frequency selection switch and in series with the direction selection switch. The multi-band broadband low-noise amplifier can amplify multiple frequency bands and received signals.
The multi-frequency bidirectional amplifier according to claim 15, wherein the two single-pole n-throw frequency band selection switches and the two direction selection switches are radio frequency switches.
The multi-frequency bidirectional amplifier according to claim 14, wherein the direction determining sub-circuit comprises an OR circuit.
The multi-frequency bidirectional amplifier according to any one of claims 1-18, wherein the frequency band includes two frequency bands.
The multi-frequency two-way amplifier according to claim 19, wherein the two frequency bands include a 2.4 GHz frequency band and a 5.8 GHz frequency band.
A transceiver, wherein the transceiver comprises the multi-frequency bidirectional amplifier according to any one of claims 1-20.
A control method of a multi-frequency bidirectional amplifier, characterized in that the method is applicable to the multi-frequency bidirectional amplifier according to any one of claims 2-20, and the method comprises:

The control circuit receives the detection result of the detection circuit;

The control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifier capable of amplifying and processing the entry signal in the amplifying circuit performs amplifying processing on the entry signal, The entering direction is the transmitting direction or the receiving direction.
The method according to claim 22, wherein the direction of entry includes a direction of emission.
23. The method according to claim 23, wherein the control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifying circuit can amplify and process the The amplifier of the incoming signal amplifies the incoming signal, including:

The control circuit determines that the incoming signal is a transmission signal according to the detection result, and combines the incoming frequency band to turn on a power amplifier capable of amplifying and processing the incoming frequency band and the transmission signal in the amplifying circuit.
23. The method according to claim 23, wherein the control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifying circuit can amplify and process the The amplifier of the incoming signal amplifies the incoming signal, including:

The control circuit determines that the incoming signal is a received signal according to the detection result, and turns on a low-noise amplifier capable of amplifying and processing the received signal in the amplifying circuit.
The method according to claim 22, wherein the entering direction comprises a receiving direction.
The method according to claim 26, wherein the control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifying circuit can amplify and process the The amplifier of the incoming signal amplifies the incoming signal, including:

The control circuit determines that the incoming signal is a received signal according to the detection result, and combines the incoming frequency band to turn on a low noise amplifier capable of amplifying and processing the incoming frequency band and the received signal in the amplifying circuit.
The method according to claim 26, wherein the control circuit determines the entry direction and the entry frequency band of the entry signal entering the amplifying circuit according to the detection result, and performs switching so that the amplifying circuit can amplify and process the The amplifier of the incoming signal amplifies the incoming signal, including:

The control circuit determines that the incoming signal is a transmission signal according to the detection result, and turns on a power amplifier capable of amplifying and processing the transmission signal in the amplifying circuit.
A computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor realizes the multi-frequency bidirectional The control method of the amplifier.