CN113016145A - Multi-frequency bi-directional amplifier, transceiver, control method, and storage medium - Google Patents
Multi-frequency bi-directional amplifier, transceiver, control method, and storage medium Download PDFInfo
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- CN113016145A CN113016145A CN202080005967.2A CN202080005967A CN113016145A CN 113016145 A CN113016145 A CN 113016145A CN 202080005967 A CN202080005967 A CN 202080005967A CN 113016145 A CN113016145 A CN 113016145A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
A multi-frequency bi-directional amplifier (100), a transceiver, a control method and a storage medium, the multi-frequency bi-directional amplifier (100) comprising: an amplification circuit (10) including a plurality of amplifiers (11), the plurality of amplifiers (11) being capable of performing amplification processing on a plurality of transmission signals and/or reception signals of different frequency bands; and the control circuit (20) is used for switching according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit (10), so that the amplifier (11) which can amplify the entering signal in the amplifying circuit (10) can amplify the entering signal, and the entering direction is the transmitting direction or the receiving direction.
Description
Technical Field
The present application relates to the field of circuit technologies, and in particular, to a multi-frequency bi-directional amplifier, a transceiver, a control method, and a storage medium.
Background
Bidirectional power amplifiers are often used to extend the communication range for time division duplex communication systems (e.g., drones, local area wireless networks). Different from a common power amplifier, the bidirectional power amplifier has the function of identifying the working state of the system, can judge whether the system works in a receiving state or a transmitting state, and intelligently selects and amplifies a receiving signal or a transmitting signal, so that the receiving performance and the transmitting power of the system are improved, and the communication distance is expanded.
With the development of communication technology, time division duplex communication systems with multi-band operation capability are emerging. For example, technologies such as wireless local area networks (wlans) generally have dual-band operation capability (typically, 2400 to 2483MHz and 5750 to 5850MHz dual-band operation are supported at the same time). The existing bidirectional power amplifier only has the working capability in a single narrow frequency band and cannot be well matched with a new multi-frequency band communication system to realize functions.
Disclosure of Invention
Based on this, the present application provides a multi-frequency bi-directional amplifier, a transceiver, a control method, and a storage medium.
In a first aspect, the present application provides a multi-frequency bi-directional amplifier, comprising:
the amplifying circuit comprises a plurality of amplifiers, wherein the amplifiers can amplify a plurality of transmitting signals and/or receiving signals of different frequency bands;
the control circuit is used for switching according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit, so that an amplifier capable of amplifying the entering signal in the amplifying circuit amplifies the entering signal, and the entering direction is a transmitting direction or a receiving direction.
In a second aspect, the present application provides a transceiver comprising a multi-frequency bi-directional amplifier as described above.
In a third aspect, the present application provides a method for controlling a multi-frequency bi-directional amplifier, the method comprising:
the control circuit receives the detection result of the detection circuit;
and the control circuit determines the entering direction and the entering frequency band of the entering signal entering the amplifying circuit according to the detection result, and switches to enable an amplifier capable of amplifying the entering signal in the amplifying circuit to amplify the entering signal, wherein the entering direction is a transmitting direction or a receiving direction.
In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program, which when executed by a processor causes the processor to implement the method for controlling a multi-frequency bi-directional amplifier as described above.
The embodiment of the application provides a multi-frequency bidirectional amplifier, a transceiver, a control method and a storage medium, wherein the multi-frequency bidirectional amplifier comprises the following steps: the amplifying circuit comprises a plurality of amplifiers, wherein the amplifiers can amplify a plurality of transmitting signals and/or receiving signals of different frequency bands; the control circuit is used for switching according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit, so that an amplifier capable of amplifying the entering signal in the amplifying circuit amplifies the entering signal, and the entering direction is a transmitting direction or a receiving direction. The control circuit can switch the incoming signal entering direction and the incoming frequency range according to the incoming signal entering direction of the amplifying circuit, so that the amplifier capable of amplifying the incoming signal in the amplifying circuit amplifies the incoming signal.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are 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 schematic structural diagram of an embodiment of a multi-frequency bi-directional amplifier according to the present application;
fig. 2 is a schematic structural diagram of another embodiment of the multi-frequency bi-directional amplifier of the present application;
fig. 3 is a schematic structural diagram of a multi-frequency bi-directional amplifier according to another embodiment of the present application;
fig. 4 is a schematic structural diagram of a multi-frequency bi-directional amplifier according to another embodiment of the present application;
fig. 5 is a schematic structural diagram of a multi-frequency bi-directional amplifier according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a multi-frequency bi-directional amplifier according to another embodiment of the present application;
fig. 7 is a schematic diagram of a logic structure of an application of the multi-frequency bi-directional amplifier of the present application;
fig. 8 is a schematic logic structure diagram of another application of the multi-frequency bi-directional amplifier of the present application.
Description of the main elements and symbols:
100. a multi-frequency bi-directional amplifier; 10. an amplifying circuit; 11. an amplifier; 111. a power amplifier; 112. a multi-band broadband low noise amplifier; 20. a control circuit; 21. a direction control sub-circuit; 211. a direction determination sub-circuit; 212. a direction selection switch; 22. a frequency band control sub-circuit; 221. a frequency band selection switch; 30. a detection circuit; 31. a detector sub-circuit; 311. a band-pass filter; 312. a detector; 40. a power divider.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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.
The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Bidirectional power amplifiers are often used to extend the communication range for time division duplex communication systems (e.g., drones, local area wireless networks). With the development of communication technology, time division duplex communication systems with multi-band operation capability are emerging. The existing bidirectional power amplifier only has the working capability in a single narrow frequency band and cannot be well matched with a new multi-frequency band communication system to realize functions.
In an embodiment of the present application, a multi-frequency bi-directional amplifier includes: the amplifying circuit comprises a plurality of amplifiers, and the plurality of amplifiers can amplify the transmitting signals and/or the receiving signals of a plurality of different frequency bands; and the control circuit is used for switching according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit, so that an amplifier capable of amplifying the entering signal in the amplifying circuit amplifies the entering signal, and the entering direction is a transmitting direction or a receiving direction. The control circuit can switch the incoming signal entering direction and the incoming frequency range according to the incoming signal entering direction of the amplifying circuit, so that the amplifier capable of amplifying the incoming signal in the amplifying circuit amplifies the incoming signal.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a multi-frequency bidirectional amplifier according to the present application, which is capable of amplifying a plurality of transmission signals and/or reception signals in different frequency bands.
The multi-frequency bi-directional amplifier 100 includes: an amplifying 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 a plurality of transmission signals and/or reception signals of different frequency bands.
The control circuit 20 is electrically connected to the amplifying circuit 10, and is configured to switch between an entering direction and an entering frequency band of an entering signal entering the amplifying circuit 10, so that the amplifier 11 capable of amplifying the entering signal in the amplifying circuit 10 amplifies the entering signal, where the entering direction is a transmitting direction or a receiving direction.
The transmission signal is a signal whose entering direction is a transmission direction, and is generally a signal transmitted by a transmission source, and the reception signal is a signal whose entering direction is a reception direction, and is generally a signal received by an antenna.
To amplify the signals coming from two different directions, i.e. 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 one for amplifying the reception signal. Generally, the requirements of the amplification process of the transmission Signal and the amplification process of the reception Signal are different, and the amplification process of the transmission Signal usually adopts a Power Amplifier (PA), and the PA is used for output amplification of the Signal, obtains a relatively strong Signal from a circuit, has a high Signal-to-Noise Ratio (SNR), and must be used to increase the Signal Power. The amplification process of the received signal usually uses a Low Noise Amplifier (LNA), the LNA is used for the input amplification at the antenna end, and obtains extremely weak uncertain signals from the antenna end, these signals are usually signals in the order of microvolts or less than-100 dBm, and then amplifies the signals to a more useful level, usually about 0.5 to 1V, and the LNA focuses on the Noise figure and gain (of course, the linearity is also important), and is mainly used at the front end of the receiving link, and the function is to improve the receiving performance. Typically, the LAN will be much smaller than the amplification of the PA.
The number of amplifiers 11 is also related to the requirement of amplification processing of signals in different frequency bands, if a multi-frequency amplifier capable of being integrated is used, the number of amplifiers 11 in the amplifying circuit 10 can be relatively smaller, if a single narrow-frequency amplifier is used, one amplifier 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. In view of the prior art, power amplifiers of multiple frequency bands are integrated together to form an ultra-wideband power amplifier, which has relatively high cost (the cost is 5 times higher under the same performance condition), and some technical difficulties are relatively high; the low noise amplifiers of a plurality of frequency bands are integrated together, which is relatively easy, has lower cost than the low noise amplifiers of a plurality of different single narrow frequency bands, can simplify the circuit structure and has high performance benefit. Of course, a plurality of bidirectional power amplifiers of different frequency bands may be selected, each bidirectional power amplifier amplifies and processes the transmission signal and/or the reception signal of the frequency band, and the plurality of bidirectional power amplifiers of different frequency bands are connected in parallel to form an amplifying circuit. The number and type of amplifiers may be selected according to specific applications and requirements, and are not limited herein.
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 herein, as long as the control circuit 20 can switch according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit 10, so that the amplifier 11 capable of amplifying the entering signal in the amplifying circuit 10 amplifies the entering signal.
For example, the amplifying circuit can amplify and process the transmission signals and the reception signals of the frequency bands 1 and 2 under the control of the control circuit; for another example, the amplifying circuit can amplify and process the transmission signals and the reception signals of the frequency bands 1, 2, and 3 under the control of the control circuit.
The multi-frequency bi-directional amplifier 100 of the embodiment of the present application includes: an amplifying circuit 10 including a plurality of amplifiers 11, the plurality of amplifiers 11 being capable of amplifying a plurality of transmission signals and/or reception signals of different frequency bands; and the control circuit 20 is configured to switch between an entering direction and an entering frequency band of an entering signal entering the amplifying circuit 10, so that the amplifier 11 capable of amplifying the entering signal in the amplifying circuit 10 amplifies the entering signal, where the entering direction is a transmitting direction or a receiving direction. Since the amplifying circuit 10 includes a plurality of amplifiers 11 capable of amplifying the transmission signals and/or the reception signals in a plurality of different frequency bands, the control circuit 20 can switch between the entering direction and the entering frequency band of the entering signal entering the amplifying circuit 10, so that the amplifier 11 capable of amplifying the entering signal in the amplifying circuit 10 amplifies the entering signal, and in this way, the transmission signals and/or the reception signals in a plurality of different frequency bands can be amplified.
Because the incoming signal entering the amplifying circuit can be a transmitting signal or a receiving signal, and the frequency band of the incoming signal is also changed, the time for the transmitting signal and/or the receiving signal to enter the amplifying circuit usually cannot be fixed time, and is not controlled by the multi-frequency bidirectional amplifier, in order to determine the incoming direction and the incoming frequency band of the incoming signal, the incoming signal needs to be detected, and the incoming direction and the incoming frequency band of the incoming signal need to be detected.
Referring to fig. 2 in combination, in an embodiment, the multi-frequency bi-directional amplifier further includes: a detector circuit 30.
The detector circuit 30 is electrically connected to the control circuit 20 for detecting the incoming signal to determine the incoming direction and incoming frequency band of the incoming signal.
The detector circuit 30 is usually provided in at least one of the two incoming directions, and depending on the type of amplifier 11 selected in the amplifier circuit 10, the detector circuit 30 may detect only an incoming signal in the transmission direction, may detect only an incoming signal in the reception direction, and may detect both an incoming signal in the transmission direction and an incoming signal in the reception direction.
The entering direction includes a transmitting direction, when the detecting circuit 30 detects an entering signal, the entering signal is a transmitting signal, and further detects an entering frequency band of the entering signal, the control circuit 20 determines the entering signal as the transmitting signal according to the entering signal, and combines the entering frequency band to turn on the power amplifier capable of amplifying the entering frequency band and the transmitting signal in the amplifying circuit 10.
The entering direction includes a transmitting direction, when the detecting circuit 30 does not detect an entering signal, it indicates that there is no signal in the transmitting direction, the entering signal is a receiving signal in a receiving direction, the control circuit 20 determines that the entering signal is the receiving signal, and turns on a low noise amplifier capable of amplifying and processing the receiving signal in the amplifying circuit 10. If the amplifying circuit 10 employs a multi-band wideband low noise amplifier integrating low noise amplifiers for amplifying received signals of multiple frequency bands, it is not necessary to determine the specific frequency band of the received signal. Because the multi-band broadband low-noise amplifier is common and has low cost, when the multi-band broadband low-noise amplifier can be adopted in practical application, the amplifying circuit 10 adopts the multi-band broadband low-noise amplifier; and the circuit structure of the multi-frequency bidirectional amplifier can be simplified by adopting the multi-frequency broadband low-noise amplifier.
The entering direction includes a receiving direction, when the detection circuit 30 detects an entering signal, the entering signal is a receiving signal, and further detects an entering frequency band of the entering signal, the control circuit 20 determines the entering signal as the receiving signal according to the entering signal, and combines the entering frequency band to turn on the low noise amplifier capable of amplifying the entering frequency band and the receiving signal in the amplifying circuit 10.
The entering direction includes a receiving direction, when the detection circuit 30 does not detect an entering signal, it indicates that there is no signal in the receiving direction, the entering signal is a transmitting signal in the transmitting direction, the control circuit 20 determines that the entering signal is the transmitting signal, and turns on a power amplifier capable of amplifying the transmitting signal in the amplifying circuit 10. Although the multi-band broadband transmission power amplifier integrating the power amplifiers of multiple frequency bands is relatively high in cost and rare, if the amplifying circuit 10 adopts the multi-band broadband transmission power amplifier, the specific frequency band of the transmission signal does not need to be determined.
If the amplifying circuit 10 employs both a plurality of different single-band power amplifiers and a plurality of different single-band low noise amplifiers, the detecting circuit 30 needs to detect both the incoming signal in the transmitting direction and the incoming signal in the receiving direction to determine the specific frequency band of the transmitting signal and the specific frequency band of the receiving signal.
If the incoming signal has only one signal, the incoming signal needs to be divided into multiple signals to enter the amplifying circuit 10 and the detecting circuit 30, respectively. As shown in fig. 2, the multi-frequency bi-directional amplifier 100 further includes a power divider 40, and 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 amplifying circuit 10 and the detecting circuit 30, respectively.
The input port of the power splitter 40 may be electrically connected to the transmission source, where the detection circuit 30 is able to detect the transmission signal. The input port of the power divider 40 may also be electrically connected to the antenna, in which case the detector circuit 30 can detect the received signal.
Wherein the power splitter 40 comprises a broadband power splitter. The circuit of the multi-frequency bi-directional amplifier 100 can be simplified by using a broadband power splitter.
Referring to fig. 3 in combination, in an embodiment, the detector circuit 30 includes a plurality of detector sub-circuits 31 of different frequency bands, the plurality of detector sub-circuits 31 of different frequency bands are electrically connected to the plurality of output ports of the power divider 40, respectively, and the detector sub-circuit 31 of each 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 (BPF) 311 for passing signals in a certain frequency Band but not passing signals outside the frequency Band; the detector 312 is used to detect the signal after passing through the band pass filter 311. The detector 312 is capable of detecting the signal through the band-pass filter 311. If the signals are all filtered out by the bandpass filter 311, the detector does not detect the signal.
For example: the detection sub-circuit comprises three detection sub-circuits of a frequency band 1, a frequency band 2 and a frequency band 3: in the detection sub-circuit of the frequency band 1, the band-pass filter corresponding to the frequency band 1 can enable the signal of the frequency band 1 to pass, and enable the signal outside the frequency band 1 not to pass, and the detector corresponding to the frequency band 1 can detect the signal of the frequency band 1; in the detection sub-circuit of the frequency band 2, the band-pass filter corresponding to the frequency band 2 can enable the signal of the frequency band 2 to pass, and enable the signal outside the frequency band 2 not to pass, and the detector corresponding to the frequency band 2 can detect the signal of the frequency band 2; in the detection sub-circuit of the frequency band 3, the band-pass filter corresponding to the frequency band 3 can pass the signal of the frequency band 3, and can not pass the signal outside the frequency band 3, and the detector corresponding to the frequency band 3 can detect the signal of the frequency band 3.
Referring to fig. 5 in combination, the control circuit 20 needs to switch according to the entering direction and the entering frequency band of the entering signal, and in an embodiment, the control circuit 20 includes: a direction control sub-circuit 21 and a band control sub-circuit 22.
The direction control sub-circuit 21 is electrically connected to the detection circuit 30, and is configured to determine an entering direction of an entering signal, and turn on an amplifier capable of amplifying the entering direction signal in the amplifying circuit 10 according to the entering direction; the band control sub-circuit 22 is electrically connected to the detection circuit 30, and is configured to determine an incoming band of the incoming signal, and turn on an amplifier capable of amplifying the incoming signal in the amplification circuit 10 according to the incoming band.
Specifically, referring to fig. 6 in combination, the direction control sub-circuit 21 includes a direction determining sub-circuit 211 and a direction selection switch 212.
The direction determining sub-circuit 211 is electrically connected to the wave detecting circuit 30 for determining the entering direction of the entering signal; the direction selection switch 212 is electrically connected to the direction determination sub-circuit 211, and the direction selection switches 212 are respectively provided at both ends of the amplifier 11 for turning on the transmission direction or the reception direction according to the entering direction.
In this embodiment, the number of the direction selection switches 212 includes at least two, and one direction selection switch 212 may be respectively disposed at two ends of each amplifier 11, or one direction selection switch 212 may be respectively disposed at two ends of a plurality of amplifiers 11.
Wherein the direction determining subcircuit 211 includes an or gate circuit. The OR gate circuit has a plurality of input terminals, an output terminal, and an output terminal which is high (logic "1") whenever one of the input terminals is high (logic "1"); the output is low (logic "0") only if all inputs are low (logic "0"). As long as the detector circuit 30 detects the incoming signal (high level), the output is high level regardless of which frequency band the incoming signal is, and the input of the or gate circuit has a high level; the output is low as long as the detector circuit 30 does not detect the incoming signal (low level), i.e., does not detect signals of either band, and the inputs to the or gate are all low.
The band control sub-circuit 22 includes a band selection switch 221, the band selection switch 221 is electrically connected to the detection circuit 30, and the band selection switches 221 are respectively disposed at two ends of the amplifier 11, and are used for determining an entering band of the entering signal and conducting the entering band.
The frequency band selection switch 221 may be a selection switch (on or off) corresponding to one frequency band, a plurality of frequency bands require a plurality of corresponding selection switches, and the selection switch corresponding to each frequency band is respectively disposed at two ends of each amplifier 11; the frequency band selection switch 221 may also be a switch integrated with a plurality of selection switches of different frequency bands to form a single-pole n-throw frequency band selection switch, and the single-pole n-throw frequency band selection switch is disposed at two ends of the plurality of amplifiers 11.
Further, in order to simplify the circuit structure of the multi-frequency bi-directional amplifier as much as possible, the band selection switch 221 includes two single-pole n-throw band selection switches, the two single-pole n-throw band selection switches are electrically connected to the detection circuit 30, and the two single-pole n-throw band selection switches are respectively disposed 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.
Wherein, two single-pole n-throw frequency band selection switches and two direction selection switches are radio frequency switches.
In a practical application, the amplifying circuit 10 comprises a plurality of power amplifiers 111 of different frequency bands and a multiband broadband low noise amplifier 112. The power amplifiers 111 in different frequency bands are arranged in parallel, and the power amplifier 111 in each frequency band can amplify the frequency band and the transmission signal; the multiband broadband low noise amplifier 112 is connected in parallel with the single-pole n-throw frequency band selection switch and in series with the direction selection switch 212, and the multiband broadband low noise amplifier 112 can amplify received signals in multiple frequency bands. 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 in which multiple frequency bands are more commonly used is two frequency bands. For example: technologies such as wireless local area networks generally have dual-band operation capability at present, and typically support dual-band operation in 2.4GHz band (2400-2483 MHz) and 5.8GHz band (5750-5850 MHz) simultaneously.
Referring to fig. 7, fig. 7 is a schematic diagram of a logic structure of an application of the multi-frequency bi-directional amplifier of the present application. The power divider adopts a 2-6G broadband power divider (abbreviated as 2-6G broadband power divider in the figure); the detection circuit comprises a 2.4GHz band-pass filter (BPF) and a detector (2.4 GHz BPF and detection are abbreviated in the figure), a 5.8GHz band-pass filter (BPF) and a detector (5.8 GHz BPF and detection are abbreviated in the figure); the direction determination sub-circuit is an OR gate circuit (also called an OR gate) for determining a Transmit direction (Transmit, abbreviated as T OR Tx) OR a Receive direction (Receive, abbreviated as R OR Rx); the direction selection switch is a transmission or reception selection switch (abbreviated as Tx/Rx selection switch in the figure); the power amplifiers for amplifying and processing the transmission signals are respectively a 2.4GHz power amplifier (abbreviated as 2.4GHz PA in the figure) and a 5.8GHz power amplifier (abbreviated as 5.8GHz PA in the figure), and are controlled by a frequency band selection switch; the amplifier for amplifying the received signal is a 2-6GHz broadband low noise amplifier (abbreviated as 2-6GHz broadband LNA in the figure).
The dual-frequency bidirectional amplifier can work in cooperation with a dual-frequency time division duplex communication system widely applied at present, and the communication performance effect of the dual-frequency bidirectional amplifier can be improved. The dual-frequency bidirectional amplifier provided by the embodiment of the application can realize dual-frequency band coverage work under the condition of controllable cost increase, has wider coverage frequency band and scene, stronger adaptation compatibility and capability of increasing the communication distance of a dual-frequency time division duplex communication system by more than 3 times.
Referring to fig. 8, fig. 8 is a schematic diagram of a logic structure of another application of the multi-frequency bi-directional amplifier of the present application.
The power divider adopts a broadband power divider (abbreviated as broadband power divider in the figure); the detection circuit comprises a band-pass filter (BPF) and a detector (BPF and detection are abbreviated as band 1 in the figure) of a band 1, a band-pass filter (BPF) and a detector (BPF and detection are abbreviated as band 2 in the figure) of a band 2, … …, a band-pass filter (BPF) and a detector of a band n (BPF and detection are abbreviated as band n in the figure); the direction determining sub-circuit is an n-channel transceiving control circuit and is used for determining a transmitting direction (Transmit, abbreviated as T or Tx) or a receiving direction (Receive, abbreviated as R or Rx); the direction selection switch is a transmission or reception selection switch (abbreviated as Tx/Rx selection switch in the figure); the power amplifiers for amplifying and processing the transmission signals are respectively a frequency band 1 power amplifier (abbreviated as frequency band 1PA in the figure), a frequency band 2 power amplifier (abbreviated as frequency band 2PA in the figure), … … and a frequency band n power amplifier (abbreviated as frequency band n PA in the figure), and are controlled by a single-pole n-throw frequency band selection switch; the amplifier for amplifying the received signal is a multiband wideband low noise amplifier (abbreviated as multiband wideband LNA in the figure).
Yet another application scenario for multiband is tri-band radar. The three wave bands can be L wave band (1-2 GHz), S wave band (2-4 GHz) and X wave band (8-12 GHz); or UHF band (0.3-3 GHz), S band (2-4 GHz) and C band radar (4-8 GHz).
The present application also provides a transceiver comprising a multi-frequency bi-directional amplifier as claimed in any one of the above. For a detailed description of the multi-frequency bi-directional amplifier, please refer to the above description, which is not repeated herein.
The present application also provides a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement a method of controlling a multi-frequency bi-directional amplifier as described in any one of the following. For a detailed description of relevant contents, reference is made to the above-mentioned relevant contents section, which is not described herein again in a redundant manner.
The control method comprises the following steps: the control circuit receives the detection result of the detection circuit; and the control circuit determines the entering direction and the entering frequency band of the entering signal entering the amplifying circuit according to the detection result, and switches to enable an amplifier capable of amplifying the entering signal in the amplifying circuit to amplify the entering signal, wherein the entering direction is a transmitting direction or a receiving direction.
Wherein the entry direction comprises a launch direction.
The control circuit determines the incoming signal as a transmitting signal according to the detection result, and switches on the power amplifier capable of amplifying the incoming frequency band and the transmitting signal in the amplifying circuit by combining the incoming frequency band.
And the control circuit determines the incoming signal as a receiving signal according to the detection result, and switches on a low-noise amplifier which can amplify and process the receiving signal in the amplifying circuit.
Wherein the entry direction comprises a receive direction.
The control circuit determines the incoming signal as a received signal according to the detection result, and switches on a low noise amplifier capable of amplifying the incoming frequency band and the received signal in the amplifying circuit in combination with the incoming frequency band.
And the control circuit determines the incoming signal as a transmitting signal according to the detection result, and switches on a power amplifier which can amplify and process the transmitting signal in the amplifying circuit.
The computer readable storage medium may be an internal storage unit of the above-mentioned multifrequency 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 bi-directional amplifier, such as a plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, etc.
It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
The above description is only for the specific embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (29)
1. A multi-frequency bi-directional amplifier, comprising:
the amplifying circuit comprises a plurality of amplifiers, wherein the amplifiers can amplify a plurality of transmitting signals and/or receiving signals of different frequency bands;
the control circuit is used for switching according to the entering direction and the entering frequency band of the entering signal entering the amplifying circuit, so that an amplifier capable of amplifying the entering signal in the amplifying circuit amplifies the entering signal, and the entering direction is a transmitting direction or a receiving direction.
2. The multi-frequency bi-directional amplifier of claim 1, further comprising:
and the detection circuit is used for detecting the incoming signal so as to determine the incoming direction and the incoming frequency band of the incoming signal.
3. The multi-frequency bi-directional amplifier of claim 2, wherein the incoming direction comprises a transmit direction.
4. The multi-frequency bi-directional amplifier according to claim 3, wherein when the detector circuit detects the incoming signal and the incoming frequency band of the incoming signal, the control circuit determines the incoming signal as a transmission signal according to the incoming signal, and turns on a power amplifier capable of amplifying the incoming frequency band and the transmission signal in the amplifier circuit in combination with the incoming frequency band.
5. The multi-frequency bi-directional amplifier of claim 3, wherein when said detector circuit does not detect said incoming signal, said control circuit determines said incoming signal as a received signal, and turns on a low noise amplifier of said amplifier circuit capable of amplifying said received signal.
6. The multi-frequency bi-directional amplifier of claim 2, wherein the incoming direction comprises a receive direction.
7. The multi-frequency bi-directional amplifier according to claim 6, wherein when the detector circuit detects the incoming signal and the incoming frequency band of the incoming signal, the control circuit determines the incoming signal as a received signal according to the incoming signal, and turns on a low noise amplifier capable of amplifying the incoming frequency band and the received signal in the amplifier circuit in combination with the incoming frequency band.
8. The multi-frequency bi-directional amplifier of claim 6, wherein when said detector circuit does not detect said incoming signal, said control circuit determines said incoming signal as a transmission signal, and turns on a power amplifier of said amplifier circuit capable of amplifying said transmission signal.
9. The multi-frequency bi-directional amplifier of claim 2, further comprising:
a power divider includes an input port and a plurality of output ports.
10. The multi-frequency bi-directional amplifier of claim 9, wherein the power splitter comprises a broadband power splitter.
11. The multi-frequency bi-directional amplifier of claim 9, wherein the detection circuit comprises:
a plurality of detection sub-circuits of different frequency bands, the detection sub-circuit of each frequency band being capable of detecting signals of the frequency band.
12. The multi-frequency bi-directional amplifier of claim 11, wherein each of said detector sub-circuits comprises:
a band-pass filter for passing a signal of a certain frequency band but not passing a signal other than the frequency band;
and the detector is used for detecting the signal passing through the band-pass filter.
13. The multi-frequency bi-directional amplifier of claim 2, wherein the control circuit comprises:
the direction control sub-circuit is used for determining the entering direction of the entering signal and conducting an amplifier capable of amplifying and processing the signal entering the direction in the amplifying circuit according to the entering direction;
and the frequency band control sub-circuit is used for determining the entering frequency band of the entering signal and conducting an amplifier capable of amplifying the entering frequency band signal in the amplifying circuit according to the entering frequency band.
14. The multi-frequency bi-directional amplifier of claim 13, wherein the direction control sub-circuit comprises:
a direction determination sub-circuit for determining an entry direction of the entry signal;
the direction selection switches are respectively arranged at two ends of the amplifier and used for conducting the transmitting direction or the receiving direction according to the entering direction;
the band control sub-circuit includes:
and the frequency band selection switches are respectively arranged at two ends of the amplifier and used for determining the entering frequency band of the entering signal and conducting the entering frequency band.
15. The multi-frequency bi-directional amplifier of claim 14, wherein the band selection switch comprises:
two single-pole n-throw frequency band selection switches respectively arranged at two ends of the 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 with the two single-pole n-throw frequency band selection switches in series.
16. The multi-frequency bi-directional amplifier of claim 15, wherein the amplification circuit comprises:
the 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 transmitted signal;
the multi-band broadband low-noise amplifier is connected with the single-pole n-throw frequency band selection switch in parallel and is connected with the direction selection switch in series, and the multi-band broadband low-noise amplifier can amplify a plurality of frequency bands and received signals.
17. The multi-frequency bi-directional amplifier of claim 15, wherein both said single-pole n-throw band select switches and both said direction select switches are rf switches.
18. The multi-frequency bi-directional amplifier of claim 14, wherein the direction determining sub-circuit comprises an or gate.
19. The multi-frequency bi-directional amplifier of any one of claims 1-18, wherein said frequency bands comprise two frequency bands.
20. The multi-frequency bi-directional amplifier of claim 19, wherein said two frequency bands comprise a 2.4GHz band and a 5.8GHz band.
21. A transceiver, characterized in that it comprises a multi-frequency bi-directional amplifier according to any of claims 1-20.
22. A method of controlling a multi-frequency bi-directional amplifier, the method being adapted for use in a multi-frequency bi-directional amplifier according to any one of claims 2-20, the method comprising:
the control circuit receives the detection result of the detection circuit;
and the control circuit determines the entering direction and the entering frequency band of the entering signal entering the amplifying circuit according to the detection result, and switches to enable an amplifier capable of amplifying the entering signal in the amplifying circuit to amplify the entering signal, wherein the entering direction is a transmitting direction or a receiving direction.
23. The method of claim 22, wherein the entry direction comprises a transmit direction.
24. The method of claim 23, wherein the controlling circuit determines an incoming direction and an incoming frequency band of an incoming signal entering the amplifying circuit according to the detection result, and switches to an amplifier capable of amplifying the incoming signal in the amplifying circuit to amplify the incoming signal, and the method comprises:
and the control circuit determines the incoming signal as a transmitting signal according to the detection result, and switches on a power amplifier which can amplify the incoming frequency band and the transmitting signal in the amplifying circuit by combining the incoming frequency band.
25. The method of claim 23, wherein the controlling circuit determines an incoming direction and an incoming frequency band of an incoming signal entering the amplifying circuit according to the detection result, and switches to an amplifier capable of amplifying the incoming signal in the amplifying circuit to amplify the incoming signal, and the method comprises:
and the control circuit determines the incoming signal as a receiving signal according to the detection result, and switches on a low-noise amplifier which can amplify and process the receiving signal in the amplifying circuit.
26. The method of claim 22, wherein the entry direction comprises a receive direction.
27. The method of claim 26, wherein the controlling circuit determines an incoming direction and an incoming frequency band of an incoming signal entering an amplifying circuit according to the detection result, and switches to an amplifier capable of amplifying the incoming signal in the amplifying circuit to amplify the incoming signal, and the method comprises:
and the control circuit determines the incoming signal as a received signal according to the detection result, and switches on a low noise amplifier capable of amplifying the incoming frequency band and the received signal in the amplifying circuit by combining the incoming frequency band.
28. The method of claim 26, wherein the controlling circuit determines an incoming direction and an incoming frequency band of an incoming signal entering an amplifying circuit according to the detection result, and switches to an amplifier capable of amplifying the incoming signal in the amplifying circuit to amplify the incoming signal, and the method comprises:
and the control circuit determines the incoming signal as a transmitting signal according to the detection result, and switches on a power amplifier which can amplify and process the transmitting signal in the amplifying circuit.
29. A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the method of controlling a multi-frequency bi-directional amplifier as claimed in any one of claims 22 to 28.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/088840 WO2021223121A1 (en) | 2020-05-06 | 2020-05-06 | Bidirectional multi-frequency amplifier, transceiver, control method and storage medium |
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| CN113016145A true CN113016145A (en) | 2021-06-22 |
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| CN202080005967.2A Pending CN113016145A (en) | 2020-05-06 | 2020-05-06 | Multi-frequency bi-directional amplifier, transceiver, control method, and storage medium |
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| WO (1) | WO2021223121A1 (en) |
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| WO2021223121A1 (en) | 2021-11-11 |
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