WO2023020134A1

WO2023020134A1 - Time division duplex system, chip, and signal amplifier

Info

Publication number: WO2023020134A1
Application number: PCT/CN2022/103493
Authority: WO
Inventors: 高兴振
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-08-17
Filing date: 2022-07-01
Publication date: 2023-02-23
Also published as: CN115706594A

Abstract

The embodiments of the present application relate to the technical field of communications, and in particular to a time division duplex system, a chip, and a signal amplifier. The time division duplex (TDD) system comprises a transceiver, an antenna and a signal amplifier, wherein the transceiver is configured to generate a first signal and send the first signal to the signal amplifier; the signal amplifier is configured to amplify the first signal and send the amplified first signal to the antenna; the antenna is configured to transmit the amplified first signal; the antenna is further configured to receive a second signal and send the second signal to the signal amplifier; and the signal amplifier is further configured to amplify the second signal and send the amplified second signal to the transceiver.

Description

Time Division Duplex System, Chip and Signal Amplifier

Cross References to Related Applications

This application is based on the Chinese patent application with the application number "202110942618.X" and the filing date is August 17, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is incorporated herein by reference into this application.

technical field

The embodiments of the present application relate to the technical field of communications, and in particular to a time division duplex system, a chip and a signal amplifier.

Background technique

Massive multiple-in multipleout technology (massive multiple-in multipleout, referred to as: massive MIMO) is the core technology of the fifth generation mobile communication technology (5th Generation Mobile Communication Technology, referred to as: 5G). (Time division duplexing, referred to as: TDD) system communication system obtains array gain, diversity gain, multiplexing gain and interference cancellation gain, etc., so as to make better use of resources in the space dimension, improve spectral efficiency, and obtain greater system capacity , wider coverage and higher user business transmission rate.

However, due to the multi-channel characteristics of massive MIMO technology, the use of massive MIMO technology is bound to greatly increase the volume of the communication system and increase the cost of the communication system.

Contents of the invention

An embodiment of the present application provides a TDD system, including: a transceiver, an antenna, and a signal amplifier; the transceiver is used to generate a first signal, and send the first signal to the signal amplifier; the The signal amplifier is used to amplify the first signal and send the amplified first signal to the antenna; the antenna is used to transmit the amplified first signal; the antenna is also used to receive the first signal and send the second signal to the signal amplifier; the signal amplifier is also used to amplify the second signal, and send the amplified second signal to the transceiver.

An embodiment of the present application further provides a chip, including the above-mentioned TDD system.

The embodiment of the present application also provides a signal amplifier, the signal amplifier is used to receive a first signal, amplify the first signal, and send the amplified first signal to an antenna; wherein, the first The signal is a signal generated by a transceiver; the signal amplifier is also used to receive a second signal, amplify the second signal, and send the amplified second signal to the transceiver; wherein, the The second signal is the signal received by the antenna.

Description of drawings

FIG. 1 is a schematic structural diagram of a traditional TDD system;

FIG. 2 is a first structural diagram of a TDD system according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a practical application of a TDD system according to an embodiment of the present application;

FIG. 4 is a second schematic structural diagram of a TDD system according to another embodiment of the present application;

FIG. 5 is a schematic diagram 1 of a specific implementation of a signal amplifier according to another embodiment of the present application;

FIG. 6 is a schematic structural diagram III of a TDD system according to another embodiment of the present application;

FIG. 7 is a second schematic diagram of a specific implementation of a signal amplifier according to another embodiment of the present application;

FIG. 8 is a fourth schematic structural diagram of a TDD system according to another embodiment of the present application;

FIG. 9 is a schematic structural diagram five of a TDD system according to another embodiment of the present application;

Fig. 10 is a flow chart of obtaining a signal amplifier according to another embodiment of the present application;

Fig. 11 is a schematic structural diagram of a chip according to another embodiment of the present application;

Fig. 12 is a schematic structural diagram of a signal amplifier according to another embodiment of the present application.

Detailed ways

The main purpose of the embodiment of the present application is to propose a time division duplex system, chip and signal amplifier, aiming to reduce the number of signal amplifiers on the time division duplex TDD system, thereby reducing the volume of the entire communication system and reducing the cost of the entire communication system .

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the application, many technical details are provided for readers to better understand the application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can also be realized. The division of the following embodiments is for the convenience of description, and should not constitute any limitation to the specific implementation of the present application, and the embodiments can be combined and referred to each other on the premise of no contradiction.

Massive MIMO technology is the core technology of 5G communication. Through massive MIMO technology, communication systems including TDD systems can obtain array gain, diversity gain, multiplexing gain and interference cancellation gain, etc., so as to make better use of resources in the spatial dimension. Improve spectrum efficiency to obtain larger system capacity, wider coverage and higher user service transmission rate. The structural diagram of a traditional TDD system can be shown in Figure 1. The traditional TDD system includes at least a transceiver, The antenna, the first signal amplifier for amplifying the received signal received by the antenna and the second signal amplifier for amplifying the transmitted signal generated by the transceiver, when the TDD system is in the receiving time slot, the first signal amplifier is in the working state, Amplifying the receiving signal received by the antenna; when the TDD system is in the transmitting time slot, the second signal amplifier is in the working state to amplify the transmitting signal generated by the transceiver.

The inventors of this application found that in a traditional TDD system, two signal amplifiers are required in one system, while massive MIMO technology has multi-channel characteristics, and massive MIMO technology can be configured with 64 antennas, 128 antennas or even 256 antennas. That is, massive MIMO technology can include 256 TDD systems. If each TDD system requires two signal amplifiers, the entire massive MIMO technology requires 512 signal amplifiers, which greatly increases the size of the entire communication system and increases the cost of the entire communication system.

In order to solve the above-mentioned problems that the communication system is too large in size and the cost of the communication system is too high, an embodiment of the present application provides a TDD system. The implementation details of the TDD system of this embodiment are described in detail below, and the following content is only implementation details provided for easy understanding, and is not necessary for implementing this solution.

The structural diagram of the TDD system of this embodiment can be shown in Figure 2, including: transceiver 11, antenna 13 and a signal amplifier 12, transceiver 11 is connected with signal amplifier 12, signal amplifier 12 is also connected with antenna 13.

The transceiver 11 is used to generate the first signal and send the first signal to the signal amplifier 12 .

In a specific implementation, when the communication system needs to send information to other devices, it can send a digital signal carrying the information to the transceiver 11, and the digital-to-analog converter of the transceiver 11 converts the digital signal into an analog signal, namely the first signal, and send the first signal to the signal amplifier 12 .

The signal amplifier 12 is used to amplify the first signal, and send the amplified first signal to the antenna 13 .

In a specific implementation, after receiving the first signal sent by the transceiver 11 , the signal amplifier 12 may amplify the first signal and send the amplified first signal to the antenna 13 .

The antenna 13 is used to transmit the amplified first signal.

In a specific implementation, after receiving the amplified first signal sent by the signal amplifier 12, the antenna 13 can convert the amplified first signal into a space electromagnetic wave, and the antenna 13 transmits the space electromagnetic wave to the outside world by broadcasting, Or send it to other devices through connection.

The antenna 13 is also used to receive the second signal and send the second signal to the signal amplifier 12 .

In a specific implementation, the antenna 13 can scan the external space electromagnetic wave in real time. When it detects that a certain space electromagnetic wave in the outside world is the space electromagnetic wave required by the local device, the antenna 13 can convert the space electromagnetic wave into an electrical signal, that is, the received second signal, and send the second signal to the signal amplifier 12.

The signal amplifier 12 is also used to amplify the second signal, and send the amplified second signal to the transceiver 11 .

In a specific implementation, after the signal amplifier 12 receives the second signal sent by the antenna 13, it can amplify the second signal, and send the amplified second signal to the transceiver 11, and the transceiver 11 receives the second signal from the signal amplifier 12 After the amplified second signal is sent, the amplified second signal can be converted into a digital signal through an internal analog-to-digital converter, and then subsequent processing is performed.

In one example, the schematic diagram of the actual application of the TDD system of the present embodiment can be as shown in Figure 3, the TDD system includes a transceiver 11, a signal amplifier 12, a power amplifier 14, a circulator 15, an antenna 13 and a low-noise Amplifier 16, transceiver 11 are connected with signal amplifier 12, signal amplifier 12 is also connected with power amplifier 14 and low noise amplifier 16 respectively, circulator 15 is connected with antenna 13, power amplifier 14 and low noise amplifier 16 respectively.

In the TDD system shown in Figure 3, the circulator 15 is connected with the antenna 13 through the first port, connected with the power amplifier 14 through the second port, and connected with the low noise amplifier 16 through the third port, the circulator has multiple A non-reversible device with two ports, the application of a circulator can effectively avoid the communication system error caused by the reverse transmission of the signal, and can effectively improve the smoothness of the communication system.

In the TDD system shown in Figure 3, the transceiver 11, signal amplifier 12, power amplifier 14, circulator 15 and antenna 13 constitute the transmission link of the TDD system, and the transceiver 11 through the internal digital-to-analog conversion The device converts the digital signal carrying the information to be sent into an analog signal, that is, the first signal, and sends the first signal to the signal amplifier 12, and the signal amplifier 12 performs one-stage amplification on the first signal, and the one-stage amplified The first signal is sent to the power amplifier 14, and the power amplifier 14 outputs the first signal amplified by the first stage with the maximum power under the preset distortion rate condition, that is, the first signal is amplified by the second stage, and the amplified signal after the second stage is amplified. The first signal enters the circulator 15 through the second port of the circulator 15, and is output from the first port of the circulator to the antenna 13, and the antenna 13 converts the second-stage amplified first signal into a space electromagnetic wave, and transmits it into the external space .

In the TDD system shown in Figure 3, the antenna 13, the circulator 15, the low noise amplifier 16, the signal amplifier 12 and the transceiver 11 constitute the receiving chain of the TDD system, and the antenna 13 detects a certain When the space electromagnetic wave is the space electromagnetic wave required by the local equipment, the antenna 13 converts the space electromagnetic wave into an electrical signal, that is, receives the second signal, and the second signal enters the circulator 15 through the first port of the circulator 15, and passes through the circulator 15. The third port output to the low noise amplifier 16, the low noise amplifier 16 carries out one-stage amplification to the second signal, reduces the impact of noise on the signal, improves the signal-to-noise ratio of the output, and the low noise amplifier 16 amplifies the first stage after the first stage The second signal is sent to the signal amplifier 12, and the signal amplifier 12 performs secondary amplification to the second signal, and sends the second signal after the secondary amplification to the transceiver 11, and the transceiver 11 passes through the internal analog-to-digital converter. The second signal after secondary amplification is converted into a digital signal and then subjected to subsequent processing.

In this embodiment, compared with the TDD system of the traditional massive MIMO technology, in the embodiment of the present application, the TDD system includes a transceiver, an antenna, and only includes a signal amplifier, and the transceiver is used to generate the first signal. and sending the first signal to the signal amplifier, the signal amplifier can amplify the first signal generated by the transceiver, and send the amplified first signal to the antenna for the antenna to transmit the amplified first signal to the outside world, The antenna is also used to receive the second signal from the outside, and send the second signal to the signal amplifier. The signal amplifier can also amplify the second signal, and send the amplified second signal to the transceiver. Considering the traditional The TDD system uses two signal amplifiers for transmitting and receiving signals, but the TDD system transmits and receives in time-sharing, and the transmission and reception cannot be performed at the same time. Therefore, the embodiments of the application share the same signal amplifier for transmission and reception. The signal amplifier can not only amplify the signal to be transmitted, but also amplify the received signal, which can reduce the number of signal amplifiers on the TDD system, thereby reducing the volume of the entire communication system and reducing the cost of the entire communication system, especially for multi-channel massive For a MIMO communication system, for a communication system configured with 256 antennas using massive MIMO technology, the traditional TDD system needs to be configured with 512 signal amplifiers, while the TDD system using the embodiment of the present application only needs to be configured with 256 signal amplifiers , the number of signal amplifiers is half of the original, which can significantly reduce the cost of communication systems using massive MIMO technology.

Another embodiment of the present application provides a TDD system. The implementation details of the TDD system of this embodiment are described in detail below, and the following content is only implementation details provided for easy understanding, and is not necessary for implementing this solution.

The structure schematic diagram of the TDD system of the present embodiment can be as shown in Figure 4, comprises: transceiver 11, signal amplifier 12 and antenna 13, signal amplifier 12 comprises switching module 121 and amplifying module 122, and switching module 121 is connected with transceiver respectively 11. The amplification module 122 is connected to the antenna 13 .

The switching module 121 is used to switch the working state of the signal amplifier 12. Switching the working state of the signal amplifier 12 includes: switching the working state of the signal amplifier 12 to the transmitting working state for amplifying the first signal in the transmitting time slot, or when receiving The working state of the signal amplifier 12 is switched to the receiving working state for amplifying the second signal. The amplifying module 122 is used to amplify the first signal or amplify the second signal. The switching module can automatically follow the change of the time slot of the TDD system. Switching the working state of the signal amplifier 12 does not need to be switched by manual instructions, which can ensure that the amplifying module can quickly amplify the received first signal or second signal, and at the same time ensure that the link is independent when transmitting and receiving. The two do not affect each other to avoid signal error transmission.

In one example, the switching module 121 and the amplifying module 122 of the signal amplifier 12 can be realized by the structure shown in FIG. gap, the connection between the first switch and the transceiver is conducted, and the connection between the antenna is disconnected, the connection between the second switch and the antenna is conducted, and the connection between the transceiver and the transceiver is disconnected; In a time slot, the connection between the first switch and the antenna is turned on, and the connection with the transceiver is disconnected, and the connection between the second switch and the transceiver is turned on, and the connection between the second switch and the antenna is disconnected.

In this embodiment, the signal amplifier includes a switching module and an amplifying module; the switching module is respectively connected to the transceiver, the antenna and the amplifying module; the switching module is used to switch the operation of the signal amplifier state, the switching the working state of the signal amplifier includes: switching the working state to a transmitting working state for amplifying the first signal in a transmitting time slot, or switching the working state to a transmitting working state in a receiving time slot It is used to amplify the receiving working state of the second signal; the amplifying module is used to amplify the first signal or amplify the second signal, and the switching module can automatically switch the signal amplifier as the time slot of the TDD system changes It can ensure that the amplifying module can quickly amplify the received first signal or second signal, and at the same time ensure that the transmission and reception links are independent, and the two are independent of each other. Affects to avoid erroneous transmission of signals.

The structure schematic diagram of the TDD system of the present embodiment can be as shown in Figure 6, comprise: transceiver 11, signal amplifier 22 and antenna 13, signal amplifier 22 comprises switching module 221, filter module 223 and amplification module 222, switching module 221 respectively It is connected with the transceiver 11 , the amplifying module 222 , the filtering module 223 and the antenna 13 , and the filtering module 223 is also connected with the amplifying module 222 .

The filtering module 223 is configured to filter the received first signal, or filter the received second signal.

In a specific implementation, after the transceiver 11 generates the first signal and sends the first signal to the signal amplifier 22, the switching module 221 of the signal amplifier 22 first sends the first signal to the filter module 223 for filtering, and the filter module 223 then sends the first signal to the signal amplifier 22. The filtered first signal is sent to the amplifying module 222, and the amplifying module 222 sends the amplified first signal to the antenna 13 through the switching module 221, and the antenna 13 transmits the amplified first signal to the external space; the antenna 13 is receiving After receiving the second signal and sending the second signal to the signal amplifier 22, the switching module 221 of the signal amplifier 22 first sends the second signal to the filtering module 223 for filtering, and the filtering module 223 sends the filtered second signal to the amplifying Module 222 , the amplifying module 222 sends the amplified second signal to the transceiver 11 through the switching module 221 .

In one example, the switching module 221, the filtering module 223 and the amplifying module 222 of the signal amplifier 22 can be realized by the structure shown in Figure 7, in the transmission time slot, the connection between the first switch and the transceiver is turned on, The connection between the antenna and the antenna is disconnected, and the first signal can enter the filter in the signal amplifier for filtering; in the receiving time slot, the connection between the first switch and the antenna is turned on, and the connection between the first switch and the transceiver is disconnected , the second signal can enter the filter in the signal amplifier for filtering.

In this embodiment, the signal amplifier further includes a filtering module; the filtering module is respectively connected to the switching module and the amplification module; the filtering module is used to filter the received first signal, or The received second signal is filtered, the first signal and the second signal are filtered before being amplified, and the out-of-band signal is suppressed to prevent the noise from being amplified by mistake when amplifying the first signal or amplifying the second signal , the quality of the amplified first signal or the amplified second signal can be improved.

The structure schematic diagram of the TDD system of this embodiment can be as shown in Figure 8, comprise: transceiver 11, signal amplifier 32 and antenna 13, signal amplifier 32 comprises switching module 321 and variable gain amplifying module 322, switching module 321 and respectively The transceiver 11, the variable gain amplification module 322 and the antenna 13 are connected.

The variable gain amplification module 322 is used for amplifying the first signal according to a preset first gain coefficient, or amplifying the second signal according to a preset second gain coefficient.

Specifically, the preset first gain coefficient and the preset second gain coefficient may be set by those skilled in the art according to actual needs, which is not specifically limited in this embodiment of the present application.

In a specific implementation, after the transceiver 11 generates the first signal and sends the first signal to the signal amplifier 32, the variable gain amplification module 322 of the signal amplifier 32 amplifies the first signal according to a preset first gain coefficient, and sends The first signal amplified by the first gain coefficient is transmitted to the external space through the antenna 13; after the antenna 13 receives the second signal and sends the second signal to the signal amplifier 32, the variable gain amplification module 322 of the signal amplifier 32 according to The second signal is amplified by the preset second gain coefficient, and the second signal amplified by the second gain coefficient is sent to the transceiver 11 .

In an example, the variable gain amplifying module 322 may be implemented according to a variable gain amplifier (Variable Gain Amplifier, VGA for short).

In this embodiment, the signal amplifier is a variable gain amplifier, and the amplifying module is a variable gain amplifying module; the variable gain amplifying module is used to amplify the first signal according to a preset first gain coefficient, or The second signal is amplified according to the preset second gain coefficient. Considering that the TDD system may require different amplification gains when receiving signals and transmitting signals, in this embodiment, the amplification module is a variable gain amplification module. The first gain coefficient is used when the first signal is amplified, and the second gain coefficient is used when the second signal is amplified, so that the TDD system is more flexible and better meets the actual needs of users.

In one embodiment, a schematic structural diagram of a TDD system may be shown in FIG. 9 , including: a transceiver 11, a signal amplifier 42 and an antenna 13, and the signal amplifier 42 includes a switching module 421, a filtering module 423 and a variable gain amplification module 422 , the switching module 421 is respectively connected with the transceiver 11 , the variable gain amplification module 422 , the filtering module 423 and the antenna 13 , and the filtering module 423 is also connected with the variable gain amplification module 422 .

In a specific implementation, after the transceiver 11 generates the first signal and sends the first signal to the signal amplifier 42, the switching module 421 of the signal amplifier 42 first sends the first signal to the filter module 423 for filtering, and the filter module 423 then sends the first signal to the signal amplifier 42. The filtered first signal is sent to the variable gain amplification module 422, and the variable gain amplification module 422 amplifies the filtered first signal according to the preset first gain coefficient, and then sends the amplified first signal through the switching module 421 To the antenna 13, the antenna 13 transmits the amplified first signal to the external space; after the antenna 13 receives the second signal and sends the second signal to the signal amplifier 42, the switching module 421 of the signal amplifier 42 transmits the second signal Send to the filter module 423 for filtering, and the filter module 423 sends the filtered second signal to the variable gain amplifier module 422, and the variable gain amplifier module 422 sends the amplified second signal to the transceiver through the switching module 421 Machine 11.

It is worth mentioning that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, or a part of a physical unit, or multiple physical units. Combination of units. In addition, in order to highlight the innovative part of the present application, units that are not closely related to solving the technical problem proposed in the present application are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

In one embodiment, the signal amplifier in the TDD system can be obtained by the steps shown in Figure 10, specifically including:

Step 501: Determine the technical index of the signal amplifier of the TDD system according to the preset technical index of the signal amplifier for amplifying the transmitted signal and the preset technical index of the signal amplifier for amplifying the received signal.

Specifically, the preset technical index of the signal amplifier for amplifying the transmitted signal and the preset technical index of the signal amplifier for amplifying the received signal can be set by those skilled in the art according to actual needs.

In one example, obtaining the signal amplifier in the TDD system can be implemented by a server, and those skilled in the art can disassemble the traditional TDD system, perform radio frequency link analysis, and obtain the transmitting link and receiving chain of the traditional TDD system According to the transmitting link and receiving link of the traditional TDD system, the technical indicators of the signal amplifier used to amplify the transmitted signal and the technical indicators of the signal amplifier used to amplify the received signal are obtained, and these technical indicators are stored in the server In the memory, as the preset technical indicators of the signal amplifier used to amplify the transmitted signal and the preset technical indicators of the signal amplifier used to amplify the received signal, the server disassembles and compares the two preset technical indicators Combined to determine the technical indicators of the signal amplifier of the TDD system.

In one example, the signal amplifier includes a switching module and an amplifying module. The technical indicators of the signal amplifier of the TDD system include the technical indicators of the amplifying module and the technical indicators of the switching module. The technical indicators of the amplifying module include but are not limited to: gain factor, amplifying module Standing wave, noise figure, 1dB compression point and third-order intermodulation point, etc.; the technical indicators of the switching module include but are not limited to: insertion loss of the switching module, isolation and standing wave of the switching module, etc.

In one example, the signal amplifier of the TDD system also includes a filter module, and the technical specifications of the signal amplifier of the TDD system also include the technical specifications of the filter module, and the technical specifications of the filter module include but are not limited to: out-of-band suppression, insertion loss of the filter module And the standing wave of the filter module, etc.

Step 502, acquiring a signal amplifier meeting the technical specification of the signal amplifier of the TDD system.

Step 503, build a TDD system according to the signal amplifier meeting the technical specifications of the signal amplifier of the TDD system.

In the specific implementation, the internal memory of the server stores the technical indicators of several existing signal amplifiers. After the server determines the technical indicators of the signal amplifiers of the TDD system, it can search for the signal amplifiers that conform to the TDD system among the existing signal amplifiers. The signal amplifier of the technical index, and construct the TDD system according to the signal amplifier of the technical index of the signal amplifier of the transceiver, the antenna and any one conforming to the TDD system.

In one embodiment, after the server builds the TDD system, it can also test the TDD system and output the test results of the TDD system. The test of the TDD system includes: testing the gain factor, noise figure, and 1dB compression of the amplification module. Point and third-order intercept point, test the switching time of the switching module, test the out-of-band suppression of the filtering module, etc. After building the TDD system, a number of tests are carried out on the TDD system to ensure that the TDD system meets the user's needs and further enhance the user's experience.

In this embodiment, the signal amplifier is obtained through the following steps: according to the preset technical indicators of the signal amplifier used to amplify the transmitted signal and the preset technical indicators of the signal amplifier used to amplify the received signal, determine the TDD system The technical index of the signal amplifier; obtain the signal amplifier that meets the technical index of the signal amplifier of the TDD system; according to the signal amplifier that meets the technical index of the signal amplifier of the TDD system, construct the TDD system, based on the standard, preset Set the technical index of the signal amplifier used to amplify the transmitted signal, and the technical index of the signal amplifier used to amplify the received signal, to determine the technical index of the TDD system of the embodiment of the present application, select the signal amplifier that meets the technical index of the TDD system To construct a TDD system, it can ensure that the constructed TDD system can normally amplify the received signal and transmitted signal to meet the needs of users.

Another embodiment of the present application provides a chip, the chip includes the TDD system in the above embodiment, the structure schematic diagram of the chip of this embodiment can be shown in Figure 11, including 12 pins, wherein, No. 2 Pin, pin 4, pin 6, pin 8 and pin 11 can be grounded, pin 1 is used to receive signal input, pin 9 is used to receive signal output, pin 7 is used to receive signal The pin is used for the input of the transmission signal, the 3rd pin is used for the output of the transmission signal, the 5th pin is connected to the power supply, the 10th pin is used to realize the opening and closing of the chip, and the 12th pin is used to control the chip standby sleep.

Another embodiment of the present application provides a signal amplifier for receiving a first signal, amplifying the first signal, and sending the amplified first signal to an antenna, wherein the first signal is a signal generated by a transceiver ; Also used for receiving the second signal, amplifying the second signal, and sending the amplified second signal to the transceiver, wherein the second signal is a signal received by the antenna.

In one example, the schematic structural diagram of the signal amplifier of this embodiment can be shown in FIG. 12 , including a first port 61, a second port 62, a third port 63 and a fourth port 64. For a signal, the second port 62 is used to output the amplified first signal, the third port 63 is used to receive the second signal, and the fourth port 64 is used to output the amplified second signal.

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes can be made to it in form and details without departing from the spirit and spirit of the present application. scope.

Claims

A time division duplex TDD system, comprising: a transceiver, an antenna and a signal amplifier;

The transceiver is used to generate a first signal and send the first signal to the signal amplifier;

The signal amplifier is used to amplify the first signal, and send the amplified first signal to the antenna;

The antenna is used to transmit the amplified first signal;

The antenna is also used to receive a second signal and send the second signal to the signal amplifier;

The signal amplifier is also used to amplify the second signal, and send the amplified second signal to the transceiver.
The TDD system according to claim 1, wherein the signal amplifier comprises a switching module and an amplifying module;

The switching module is respectively connected to the transceiver, the antenna and the amplification module;

The switching module is used to switch the working state of the signal amplifier, and the switching the working state of the signal amplifier includes:

switching the working state to a transmitting working state for amplifying the first signal in a transmitting time slot, or switching the working state to a receiving working state for amplifying the second signal in a receiving time slot;

The amplifying module is used for amplifying the first signal, or amplifying the second signal.
The TDD system according to claim 2, wherein the signal amplifier further comprises a filtering module;

The filtering module is respectively connected to the switching module and the amplification module;

The filtering module is configured to filter the received first signal, or filter the received second signal.
The TDD system according to claim 2 or 3, wherein the signal amplifier is a variable gain amplifier, and the amplification module is a variable gain amplification module;

The variable gain amplification module is used for amplifying the first signal according to a preset first gain coefficient, or amplifying the second signal according to a preset second gain coefficient.
The TDD system according to claim 4, wherein the signal amplifier is obtained through the following steps:

determining the technical index of the signal amplifier of the TDD system according to the preset technical index of the signal amplifier for amplifying the transmitting signal and the preset technical index of the signal amplifier for amplifying the receiving signal;

Obtaining a signal amplifier meeting the technical specifications of the signal amplifier of the TDD system;

The TDD system is constructed according to the signal amplifier meeting the technical specification of the signal amplifier of the TDD system.
The TDD system according to claim 5, wherein the technical indicators of the signal amplifier of the TDD system include: the technical indicators of the amplification module and the technical indicators of the switching module;

The technical indicators of the amplifying module include: gain coefficient, standing wave of the amplifying module, noise figure, 1dB compression point and third-order intermodulation point, and the technical indicators of the switching module include: insertion loss and isolation of the switching module and the standing wave of the switching module.
The TDD system according to claim 5, wherein the technical index of the signal amplifier of the TDD system further includes: the technical index of the filtering module;

The technical index of the filtering module includes: out-of-band suppression, insertion loss of the filtering module and standing wave of the filtering module.
The TDD system according to claim 7, wherein, after constructing the TDD system, further comprising:

Test the TDD system, and output the test results of the TDD system; wherein, the test of the TDD system includes: testing the gain factor, noise figure, 1dB compression point and third-order intermodulation of the amplification module point, test the switching time of the switching module, and test the out-of-band suppression of the filtering module.
A chip comprising the time division duplex TDD system according to any one of claims 1 to 8.
A signal amplifier, the signal amplifier is used to receive a first signal, amplify the first signal, and send the amplified first signal to an antenna; wherein the first signal is generated by a transceiver Signal;

The signal amplifier is also used to receive a second signal, amplify the second signal, and send the amplified second signal to the transceiver; wherein the second signal is received by the antenna Signal.