CN215734270U - High-isolation 5G repeater - Google Patents

Abstract

The utility model provides a high-isolation 5G repeater, which comprises a shell, a forward antenna, a backward antenna, a cavity and a control module, wherein the forward antenna and the backward antenna are arranged on the shell; the control module comprises a forward signal control module, a downlink preamplification module, a downlink power amplification module, a backward signal control module, an uplink preamplification module, an uplink power amplification module and a synchronization module, wherein the uplink preamplification module and the uplink power amplification module are sequentially electrically connected with the backward signal control module, the synchronization module is electrically connected with the forward signal control module and the backward signal control module, and the uplink power amplification module is electrically connected with the forward signal control module; the control modules are arranged in the corresponding cavities. The utility model directly amplifies 5G radio frequency signals, does not need up-down frequency conversion, directly carries out radio frequency signal direct amplification processing, controls the conduction and the closing of the multi-radio frequency switch by the uplink and downlink circuits through the synchronous circuit, and is provided with the circulator and the amplitude limiter, thereby effectively preventing the loop from being saturated, isolating each circuit module in a cavity, improving the isolation and preventing same frequency interference.

Description

High-isolation 5G repeater

Technical Field

The utility model relates to the technical field of wireless communication networks, in particular to a high-isolation 5G repeater.

Background

The higher the frequency of the 5G signal is, the weaker the diffraction capability of the radio wave is, and the larger link loss problem can be faced when the 5G macro base station signal deployed in a high frequency band passes through a wall indoors, so that the indoor deep coverage is limited. Because the 5G network adopts the millimeter wave technology, it is an electromagnetic wave with weak penetration and capable of being attenuated rapidly, which determines that its anti-interference capability is weak and the signal penetration of 5G is poor, so the signal coverage of a common 5G base station is only 200 meters in general. Therefore, a repeater is needed to make up for the insufficient coverage of the 5G signal, expand the coverage of the base station, fill the coverage busy, reduce the cost of network coverage and promote the development of 5G.

In the existing repeater technology, a forward antenna is used for receiving a downlink signal of a base station into a repeater, a low-noise amplifier is used for amplifying a useful signal, the useful signal is converted into an intermediate-frequency signal through down conversion, the intermediate-frequency signal is converted into a radio frequency through up conversion, the radio frequency signal is amplified through a power amplifier, and the radio frequency signal is transmitted to a mobile station through a backward antenna, namely the radio frequency signal is transmitted to the base station through the low-noise amplifier, a down converter, a filter, a middle amplifier, an up converter and the power amplifier, so that the two-way communication between the base station and the mobile station is realized. The prior art has relatively complex circuits and relatively complex working principle. The production and manufacturing cost is high.

Disclosure of Invention

The utility model aims to solve the problems of relatively complex circuits and working principles of the existing repeater and high production and manufacturing costs, and provides a high-isolation 5G repeater which directly amplifies a 5G radio frequency signal without up-down frequency conversion and directly performs radio frequency signal direct amplification processing, wherein an uplink circuit and a downlink circuit are controlled to be switched on and off through a synchronous circuit, and a circulator and a limiter are arranged to effectively prevent a loop from being saturated, isolate each circuit module in a cavity, improve isolation and prevent same-frequency interference. The repeater has the advantages of simple working principle, high processing efficiency, high isolation, relatively low cost and strong manufacturability, and is suitable for large-scale generation to solve the problem of the dead zone of the 5G signal.

The utility model provides a high-isolation 5G repeater, which comprises a shell, a forward antenna, a backward antenna, a cavity and a control module, wherein the forward antenna and the backward antenna are arranged on the shell;

the cavity comprises a downlink preamplification cavity, a downlink power amplification cavity, a backward signal control cavity, an uplink power amplification cavity, an uplink preamplification cavity and a synchronous cavity, wherein the downlink preamplification cavity, the downlink power amplification cavity and the backward signal control cavity are arranged in sequence;

the control module comprises a forward signal control module, a downlink preamplification module, a downlink power amplification module and a backward signal control module which are sequentially and electrically connected, an uplink preamplification module, an uplink power amplification module and a synchronization module which are sequentially and electrically connected with the backward signal control module, and the uplink power amplification module is electrically connected with the forward signal control module and the backward signal control module;

the forward signal control module comprises a coupling filtering system and a first radio frequency switch which are electrically connected, and the coupling filtering system is electrically connected with the forward antenna;

the downlink preamplification module is arranged in the downlink preamplification cavity and comprises a first low-noise amplifier which is electrically connected with the first radio frequency switch;

the downlink power amplification module is arranged in the downlink power amplification cavity and comprises a first amplitude limiter and a first power amplifier which are electrically connected, and the first amplitude limiter is electrically connected with the first low-noise amplifier;

the backward signal control module comprises a second radio frequency switch and a first filter which are electrically connected, the second radio frequency switch is electrically connected with the first power amplifier, and the first filter is electrically connected with the backward antenna;

the uplink preamplification module is arranged in the uplink preamplification cavity and comprises a second low-noise amplifier electrically connected with the second radio frequency switch;

the uplink power amplification module is arranged in the uplink power amplification cavity and comprises a second amplitude limiter and a second power amplifier which are electrically connected, the second amplitude limiter is electrically connected with a second low noise amplifier, and the second power amplifier is electrically connected with the first radio frequency switch;

the synchronous module is arranged in the synchronous cavity and is electrically connected with the coupling filtering system, the first radio frequency switch and the second radio frequency switch.

As a preferred mode, the cavity further comprises a forward signal control cavity arranged at the front end of the downlink preamplification cavity and the front end of the uplink power amplification cavity, and the forward signal control module is arranged in the forward signal control cavity.

As a preferred mode, the cavity further comprises a backward signal control cavity arranged at the rear end of the downlink power amplification cavity and the rear end of the uplink preamplification cavity, and the backward signal control module is arranged in the backward signal control cavity.

As a preferred mode, the high-isolation 5G repeater comprises a radio frequency channel and an FPGA which are electrically connected, wherein the radio frequency channel is electrically connected with a coupling filtering system, and the FPGA is electrically connected with a first radio frequency switch and a second radio frequency switch.

As a preferred mode, the coupling filtering system comprises a coupler and a second filter which are electrically connected, the coupler is electrically connected with the forward antenna and the synchronous module, and the second filter is electrically connected with the first radio frequency switch.

As a preferred mode, the coupling filtering system comprises a coupler and a second filter which are electrically connected, the second filter is electrically connected with the forward antenna, and the coupler is electrically connected with the first radio frequency switch and the synchronization module.

As a preferred mode, the forward signal control module further comprises a third radio frequency switch arranged on the first radio frequency switch and the downlink preamplification module (52), and the third radio frequency switch is electrically connected with the synchronization module;

the backward signal control module further comprises a fourth radio frequency switch arranged between the second radio frequency switch and the uplink preamplification module, and the fourth radio frequency switch is electrically connected with the synchronization module.

As a preferred mode, the forward signal control module further comprises a first circulator and a third radio frequency switch, wherein the first circulator is sequentially and electrically connected between the coupling filtering system and the first radio frequency switch, the third radio frequency switch is electrically connected with the other end of the first circulator, the third radio frequency switch is electrically connected with the uplink power amplification module, and the third radio frequency switch is electrically connected with the synchronization module;

the backward signal control module further comprises a second circulator and a fourth radio frequency switch, the second circulator is sequentially and electrically connected between the first filter and the second radio frequency switch, the fourth radio frequency switch is electrically connected with the row pre-amplification module, and the fourth radio frequency switch is electrically connected with the synchronization module.

As a preferred mode, the downlink preamplification module also comprises a first driving amplifier electrically connected with the first low-noise amplifier, and the first driving amplifier is electrically connected with the downlink power amplification module;

the uplink preamplification module also comprises a second drive amplifier electrically connected with the second low noise amplifier, and the second drive amplifier is electrically connected with the uplink power amplification module.

The utility model relates to a high-isolation 5G repeater, which is used as a preferred mode, wherein a downlink power amplification module also comprises a third drive amplifier, wherein the third drive amplifier is electrically connected with a downlink preamplification module at one end, and the other end of the third drive amplifier is electrically connected with a first amplitude limiter;

the uplink power amplification module also comprises a fourth drive amplifier, one end of which is electrically connected with the uplink preamplification module, and the other end of which is electrically connected with the second amplitude limiter;

the number of the downlink power amplification modules and the uplink power amplification modules is at least 1.

The forward antenna receives the downlink radio frequency signal, after coupling and filtering, the coupler is coupled to the synchronization module, the synchronization module performs cell search, calculates uplink and downlink time slots, and outputs a time slot control level to control the on or off of the first radio frequency switch, the second radio frequency switch, the third radio frequency switch and the fourth radio frequency switch. The direct end passes through a first circulator and a first radio frequency switch, a downlink time slot level starts a radio frequency switch to downlink, the radio frequency switch is started through a first low noise amplifier and a first drive amplifier of a downlink, a third drive amplifier, a first amplitude limiter and a first power amplifier, a second radio frequency switch is started, a second circulator is conducted, a first filter downlink reaches a backward antenna (transmitting), and a third radio frequency switch and a fourth radio frequency switch of an uplink are closed;

the backward antenna (receives) the uplink radio frequency signal. The uplink radio frequency signal passes through the first filter, the second circulator and the uplink time slot level to turn on the fourth radio frequency switch, the first circulator is turned on through the amplification of the second low noise amplifier and the second drive amplifier of the uplink, the amplification and the amplitude limiting of the fourth drive amplifier, the second amplitude limiter and the second power amplifier and the turn on of the third radio frequency switch, the first radio frequency switch and the second radio frequency switch of the downlink radio frequency switch are turned off, and the uplink radio frequency signal passes through the coupler and the second filter and then goes up to the forward antenna (transmission).

The multi-radio frequency switch controls the uplink and the downlink. The coupler couples the radio frequency signal to the synchronous module through low noise, when the uplink time slot signal is at high level, the uplink radio frequency switch is closed to conduct the uplink, and meanwhile, the downlink radio frequency switch is at low level and the downlink is closed. Similarly, when the downlink timeslot signal is at a high level, the downlink is turned on and the uplink is turned off.

The cavity design, the circulator and the amplitude limiter can effectively improve the loop isolation.

Each circuit module of the product is separated by a cavity, and the shell is of an all-metal structure. The EMI and EMC problems can be well solved, and the heat dissipation is good.

A Limiter (Limiter) is a circuit capable of smoothing the amplitude of a signal voltage within a limited range, and is also called a clipper. The effect of the clipping circuit is to limit the amplitude of the output signal within a certain range, i.e. when the input voltage exceeds or falls below a certain reference value, the output voltage will be limited to a certain level (called clipping level) and will no longer vary with the input voltage.

The utility model has the following advantages:

(1) the uplink and downlink do not use frequency conversion technology, but directly amplify the 5G signals;

(2) the TDD is processed by using an independent synchronous circuit, and the logical isolation of the uplink and downlink communication multi-radio frequency switch combination is high;

(3) by the cavity design, the isolation is improved, and the same frequency interference is prevented;

(4) the problem of loop coupling between amplifiers is solved by arranging an amplitude limiter, a multi-radio-frequency switch and a circulator;

(5) the working voltage is 5.5V, the device is suitable for n41\ n77\ n78\ n79 frequency bands of 5G, and is suitable for radio frequency front ends of 5G repeater stations and micropower stations with various powers.

Drawings

FIG. 1 is a block diagram of a high isolation 5G repeater in accordance with an embodiment 1;

FIG. 2 is a block diagram of a high isolation 5G repeater in accordance with an embodiment 2;

FIG. 3 is a block diagram of a high isolation 5G repeater in accordance with an embodiment 3;

FIG. 4 is a block diagram of an embodiment 4 of a high-isolation 5G repeater.

Reference numerals:

1. a housing; 2. a forward antenna; 3. a backward antenna; 4. a cavity; 41. a downlink preamplification cavity; 42. a downlink power amplification cavity; 43. an uplink power amplification cavity; 44. An upstream preamplifier chamber; 45. a synchronous cavity; 46. a forward signal control cavity; 47. A backward signal control cavity; 5. a control module; 51. a forward signal control module; 511. a coupling filtering system; 5111. a coupler; 5112. a second filter; 512. a first radio frequency switch; 513. a third radio frequency switch; 514. a first circulator; 52. a downlink preamplification module; 521. a first low noise amplifier; 522. a first driver amplifier; 53. a downlink power amplification module; 531. a first limiter; 532. a first power amplifier; 533. a third driver amplifier; 54. a backward signal control module; 541. a second radio frequency switch; 542. a first filter; 543. a fourth radio frequency switch; 544. a second circulator; 55. an uplink preamplification module; 551. a second low noise amplifier; 552. a second driver amplifier; 56. An uplink power amplification module; 561. a second limiter; 562. a second power amplifier; 563. a fourth drive amplifier; 57. a synchronization module; 571. a radio frequency channel; 572. and (5) FPGA.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

As shown in fig. 1, a high-isolation 5G repeater includes a housing 1, a forward antenna 2 and a backward antenna 3 disposed on the housing 1, a cavity 4 disposed in the housing 1, and a control module 5;

the cavity 4 comprises a downlink preamplification cavity 41, a downlink power amplification cavity 42, an uplink power amplification cavity 43, an uplink preamplification cavity 44 and a synchronization cavity 45, wherein the downlink preamplification cavity 41 and the downlink power amplification cavity 42 are arranged in sequence;

the control module 5 comprises a forward signal control module 51, a downlink pre-amplification module 52, a downlink power amplification module 53 and a backward signal control module 54 which are electrically connected in sequence, an uplink pre-amplification module 55 and an uplink power amplification module 56 which are electrically connected with the backward signal control module 54 in sequence, and a synchronization module 57 which is electrically connected with the forward signal control module 51 and the backward signal control module 54, wherein the uplink power amplification module 56 is electrically connected with the forward signal control module 51;

the forward signal control module 51 comprises a coupling filter system 511 and a first radio frequency switch 512 which are electrically connected, wherein the coupling filter system 511 is electrically connected with the forward antenna 2;

the downlink preamplification module 52 is arranged in the downlink preamplification cavity 41, the downlink preamplification module 52 comprises a first low noise amplifier 521, and the first low noise amplifier 521 is electrically connected with the first radio frequency switch 512;

the downlink power amplification module 53 is arranged in the downlink power amplification cavity 42, the downlink power amplification module 53 comprises a first amplitude limiter 531 and a first power amplifier 532 which are electrically connected, and the first amplitude limiter 531 is electrically connected with the first low noise amplifier 521;

the backward signal control module 54 includes a second rf switch 541 and a first filter 542 which are electrically connected, the second rf switch 541 is electrically connected with the first power amplifier 532, and the first filter 542 is electrically connected with the backward antenna 3;

the upstream pre-amplification module 55 is disposed in the upstream pre-amplification chamber 44, and the upstream pre-amplification module 55 includes a second low noise amplifier 551 electrically connected to the second rf switch 541;

the uplink power amplification module 56 is arranged in the uplink power amplification cavity 43, the uplink power amplification module 56 includes a second amplitude limiter 561 and a second power amplifier 562 which are electrically connected, the second amplitude limiter 561 is electrically connected with a second low noise amplifier 551, and the second power amplifier 562 is electrically connected with the first radio frequency switch 512;

the synchronization module 57 is disposed in the synchronization cavity 45, and the synchronization module 57 is electrically connected to the coupling filter system 511, the first rf switch 512, and the second rf switch 541.

The forward antenna 2 receives the downlink radio frequency signal, the coupling filter system 511 is coupled to the synchronization module 57, the synchronization module 57 performs cell search, calculates uplink and downlink time slots, outputs a time slot control level to control the downlink of the first radio frequency switch 512 and the second radio frequency switch 541 to be switched on, and switches off the uplink. The straight-through end passes through the second filter 5112 and the first radio frequency switch 512, the downlink time slot level starts the radio frequency switch to downlink, and the downlink time slot level is amplified by the first low noise amplifier 521 of the downlink, is started by the first amplitude limiter 531 and the first power amplifier 532, passes through the second radio frequency switch 541, is filtered by the first filter 542, and then downlink to the backward antenna (transmitting);

the backward antenna 3 (receives) the uplink radio frequency signal. The uplink radio frequency signal passes through the first filter 542, the uplink time slot level turn-on second radio frequency switch 541 and the first radio frequency switch 512, the uplink is turned on, the downlink is turned off, the uplink signal is amplified by the second low noise amplifier 551, amplified and limited by the second limiter 561 and the second power amplifier 562, and then passes through the first radio frequency switch 512 and then passes through the coupling filter system 511 to be uplink to the forward antenna (transmitting).

The multi-radio frequency switch controls the uplink and the downlink. The coupling filter system 511 couples the radio frequency signal to the synchronization module 57 through low noise amplification, the synchronization module 57 resolves 5G to obtain TDD uplink and downlink timeslot signals, and the TDD uplink and downlink timeslot signals are respectively sent to the uplink and downlink radio frequency switches, where the TDD timeslot signal is high level effective, and when the uplink timeslot signal is high level, the uplink radio frequency switch closes the uplink to be conducted, and simultaneously, the downlink radio frequency switch is low level and the downlink is closed. Similarly, when the downlink timeslot signal is at a high level, the downlink is turned on and the uplink is turned off.

Example 2

As shown in fig. 2, a high-isolation 5G repeater includes a housing 1, a forward antenna 2 and a backward antenna 3 disposed on the housing 1, a cavity 4 disposed in the housing 1, and a control module 5;

the cavity 4 comprises a downlink preamplification cavity 41, a downlink power amplification cavity 42, an uplink power amplification cavity 43 and an uplink preamplification cavity 44 which are arranged in parallel with the downlink preamplification cavity 41 and the downlink power amplification cavity 42 in sequence, a synchronous cavity 45 arranged on one side of a forward signal control cavity 46, a forward signal control cavity 46 arranged at the front ends of the downlink preamplification cavity 41 and the uplink power amplification cavity 43, and a backward signal control cavity 47 arranged at the rear ends of the downlink power amplification cavity 42 and the uplink preamplification cavity 44;

the control module 5 comprises a forward signal control module 51, a downlink pre-amplification module 52, a downlink power amplification module 53 and a backward signal control module 54 which are electrically connected in sequence, an uplink pre-amplification module 55 and an uplink power amplification module 56 which are electrically connected with the backward signal control module 54 in sequence, and a synchronization module 57 which is electrically connected with the forward signal control module 51 and the backward signal control module 54, wherein the uplink power amplification module 56 is electrically connected with the forward signal control module 51;

the forward signal control module 51 is arranged in the forward signal control cavity 46, the forward signal control module 51 comprises a coupling filter system 511, a first radio frequency switch 512 and a third radio frequency switch 513 which are electrically connected in sequence, the coupling filter system 511 is electrically connected with the forward antenna 2, the third radio frequency switch 513 is electrically connected with the downstream preamplification module 52, the first radio frequency switch 512 is electrically connected with the upstream power amplification module 56, and the first radio frequency switch 512 and the third radio frequency switch 513 are electrically connected with the synchronization module 57;

the coupling filtering system 511 comprises a coupler 5111 and a second filter 5112 which are electrically connected, wherein the coupler 5111 is electrically connected with the forward antenna 2 and the synchronization module 57, and the second filter 5112 is electrically connected with the first radio frequency switch 512;

the downlink pre-amplification module 52 is disposed in the downlink pre-amplification cavity 41, the downlink pre-amplification module 52 includes a first low noise amplifier 521 and a first driving amplifier 522 which are electrically connected, the first low noise amplifier 521 is electrically connected with the third radio frequency switch 513, and the first driving amplifier 522 is electrically connected with the downlink power amplification module 53;

the downlink power amplification module 53 is arranged in the downlink power amplification cavity 42, the downlink power amplification module 53 includes a third driver amplifier 533, a first limiter 531 and a first power amplifier 532, which are electrically connected, and the first limiter 531 is electrically connected with the driver amplifier 522;

the backward signal control module 54 is disposed in the backward signal control cavity 47, the backward signal control module 54 includes a second rf switch 541, a first filter 542, and a fourth rf switch 543 disposed between the second rf switch 541 and the uplink preamplifier module 55, the second rf switch 541 is electrically connected to the first power amplifier 532, the first filter 542 is electrically connected to the backward antenna 3, and the fourth rf switch 543 is electrically connected to the synchronization module 57;

the upstream pre-amplification module 55 is disposed in the upstream pre-amplification cavity 44, the upstream pre-amplification module 55 includes a second low noise amplifier 551 and a second driving amplifier 552 electrically connected, and the second low noise amplifier 551 is electrically connected with the fourth rf switch 543;

the uplink power amplification module 56 is arranged in the uplink power amplification cavity 43, the uplink power amplification module 56 includes a fourth driving amplifier 563, a second limiter 561 and a second power amplifier 562 which are electrically connected in sequence, the second limiter 561 is electrically connected with a second low noise amplifier 551, the fourth driving amplifier 563 is electrically connected with a second driving amplifier 552, and the second power amplifier 562 is electrically connected with the first radio frequency switch 512;

the synchronization module 57 is disposed in the synchronization cavity 45, the synchronization module 57 includes a radio frequency channel 571 and an FPGA572, the radio frequency channel 571 is electrically connected to the coupling filter system 511, and the FPGA572 is electrically connected to the first radio frequency switch 512, the second radio frequency switch 541, the third radio frequency switch 513, and the fourth radio frequency switch 543.

The forward antenna 2 receives downlink radio frequency signals, the coupler 5111 is coupled to the synchronization module 57, the synchronization module 57 performs cell search, calculates uplink and downlink time slots, and outputs a time slot control level to control the on/off of the first radio frequency switch 512, the second radio frequency switch 541, the third radio frequency switch 513 and the fourth radio frequency switch 543. The through end passes through the coupler 5111, the second filter 5112, the first radio frequency switch 512 and the third radio frequency switch 513, the downlink time slot level starts the radio frequency switch to downlink, the downlink time slot level is amplified by the first low noise amplifier 521 and the first drive amplifier 522 of the downlink, the downlink time slot level starts the radio frequency switch to downlink through the third drive amplifier 533, the first amplitude limiter 531 and the first power amplifier 532, the downlink time slot level starts the radio frequency switch through the second radio frequency switch 541, the first filter 542 filters the downlink time slot level, the downlink time slot level reaches the backward antenna (transmitting), and the radio frequency switch of the fourth radio frequency switch 543 of the uplink is closed;

the backward antenna 3 (receives) the uplink radio frequency signal. The uplink radio frequency signal passes through the first filter 542, the uplink time slot level turns on the second radio frequency switch 541 and the fourth radio frequency switch 543, is amplified by the second low noise amplifier 551 and the second driving amplifier 552 of the uplink, is amplified and limited by the fourth driving amplifier 563, the second limiter 561 and the second power amplifier 562, and is turned on by the first radio frequency switch 512, the second filter 5112 and the coupler 5111 go up to the forward antenna (transmit), and the third radio frequency switch 513 is turned off.

The multi-radio frequency switch controls the uplink and the downlink. The coupler 5112 couples the radio frequency signal to the synchronization module 57 through low noise amplification, the synchronization module 57 resolves 5G to obtain TDD uplink and downlink timeslot signals, and the TDD uplink and downlink timeslot signals are respectively provided to the uplink and downlink radio frequency switches, where the TDD timeslot signal is high level effective, and when the uplink timeslot signal is high level, the uplink radio frequency switch is turned on, and at the same time, the downlink radio frequency switch is low level and the downlink is turned off. Similarly, when the downlink timeslot signal is at a high level, the downlink is turned on and the uplink is turned off.

Each circuit module of the product is separated by a cavity, and the shell is of an all-metal structure. The EMI and EMC problems can be well solved, and the heat dissipation is good.

The device has an input dynamic range of-100 dBm to-45 dBm, and the gains of an uplink and a downlink are 82dB respectively. Maximum output power 23 dBm; minimum output-18 dBm, 180dB isolation.

Example 3

As shown in fig. 3, a high-isolation 5G repeater includes a housing 1, a forward antenna 2 and a backward antenna 3 disposed on the housing 1, a cavity 4 disposed in the housing 1, and a control module 5;

the cavity 4 comprises a downlink preamplification cavity 41, a downlink power amplification cavity 42, an uplink power amplification cavity 43 and an uplink preamplification cavity 44 which are arranged in parallel with the downlink preamplification cavity 41 and the downlink power amplification cavity 42 in sequence, a synchronous cavity 45 arranged on one side of a forward signal control cavity 46, a forward signal control cavity 46 arranged at the front ends of the downlink preamplification cavity 41 and the uplink power amplification cavity 43, and a backward signal control cavity 47 arranged at the rear ends of the downlink power amplification cavity 42 and the uplink preamplification cavity 44;

the control module 5 comprises a forward signal control module 51, a downlink pre-amplification module 52, a downlink power amplification module 53 and a backward signal control module 54 which are electrically connected in sequence, an uplink pre-amplification module 55 and an uplink power amplification module 56 which are electrically connected with the backward signal control module 54 in sequence, and a synchronization module 57 which is electrically connected with the forward signal control module 51 and the backward signal control module 54, wherein the uplink power amplification module 56 is electrically connected with the forward signal control module 51;

the forward signal control module 51 is arranged in the forward signal control cavity 46, the forward signal control module 51 comprises a coupling filter system 511, a first radio frequency switch 512 and a third radio frequency switch 513 which are sequentially and electrically connected, the coupling filter system 511 is electrically connected with the forward antenna 2, the third radio frequency switch 513 is electrically connected with the downstream preamplification module 52, the first radio frequency switch 512 is electrically connected with the upstream power amplification module 56, and the first radio frequency switch 512 and the third radio frequency switch 513 are electrically connected with the synchronization module 57;

the coupling filtering system 511 comprises a coupler 5111 and a second filter 5112 which are electrically connected, wherein the coupler 5111 is electrically connected with the first radio frequency switch 512 and the synchronization module 57, and the second filter 5112 is electrically connected with the forward antenna 2;

the downlink pre-amplification module 52 is disposed in the downlink pre-amplification cavity 41, the downlink pre-amplification module 52 includes a first low noise amplifier 521 and a first driving amplifier 522 which are electrically connected, the first low noise amplifier 521 is electrically connected with the third radio frequency switch 513, and the first driving amplifier 522 is electrically connected with the downlink power amplification module 53;

the downlink power amplification module 53 is arranged in the downlink power amplification cavity 42, the downlink power amplification module 53 includes a third driver amplifier 533, a first limiter 531 and a first power amplifier 532, which are electrically connected, and the first limiter 531 is electrically connected with the driver amplifier 522;

the backward signal control module 54 is disposed in the backward signal control cavity 47, the backward signal control module 54 includes a second rf switch 541, a first filter 542, and a fourth rf switch 543 disposed between the second rf switch 541 and the uplink preamplifier module 55, the second rf switch 541 is electrically connected to the first power amplifier 532, the first filter 542 is electrically connected to the backward antenna 3, and the fourth rf switch 543 is electrically connected to the synchronization module 57;

the upstream pre-amplification module 55 is disposed in the upstream pre-amplification cavity 44, the upstream pre-amplification module 55 includes a second low noise amplifier 551 and a second driving amplifier 552 electrically connected, and the second low noise amplifier 551 is electrically connected with the fourth rf switch 543;

the uplink power amplification module 56 is arranged in the uplink power amplification cavity 43, the uplink power amplification module 56 includes a fourth driving amplifier 563, a second limiter 561 and a second power amplifier 562 which are electrically connected in sequence, the second limiter 561 is electrically connected with a second low noise amplifier 551, the fourth driving amplifier 563 is electrically connected with a second driving amplifier 552, and the second power amplifier 562 is electrically connected with the first radio frequency switch 512;

the synchronization module 57 is disposed in the synchronization cavity 45, the synchronization module 57 includes a radio frequency channel 571 and an FPGA572, the radio frequency channel 571 is electrically connected to the coupling filter system 511, and the FPGA572 is electrically connected to the first radio frequency switch 512, the second radio frequency switch 541, the third radio frequency switch 513, and the fourth radio frequency switch 543.

The forward antenna 2 receives the downlink rf signal, after the second filter 5112, the coupler 5111 is coupled to the synchronization module 57, the synchronization module 57 performs cell search, calculates uplink and downlink timeslots, and outputs a timeslot control level to control the on/off of the first rf switch 512, the second rf switch 541, the third rf switch 513, and the fourth rf switch 543. The straight-through end passes through the first radio frequency switch 512 and the third radio frequency switch 513, the downlink time slot level starts the radio frequency switch to downlink, the downlink is amplified by the first low noise amplifier 521 and the first drive amplifier 522 of the downlink, passes through the third drive amplifier 533, the first amplitude limiter 531 and the first power amplifier 532, is started by the second radio frequency switch 541, is filtered by the first filter 542, and then goes to the backward antenna (transmission), and the radio frequency switch of the fourth radio frequency switch 543 of the uplink is closed;

the backward antenna 3 (receives) the uplink radio frequency signal. The uplink radio frequency signal passes through the first filter 542, the uplink time slot level turns on the second radio frequency switch 541 and the fourth radio frequency switch 543, is amplified by the second low noise amplifier 551 and the second driving amplifier 552 of the uplink, is amplified and limited by the fourth driving amplifier 563, the second limiter 561 and the second power amplifier 562, and is turned on by the first radio frequency switch 512, the coupler 5111 and the second filter 5112 go up to the forward antenna (transmit), and the third radio frequency switch 513 is turned off.

The multi-radio frequency switch controls the uplink and the downlink. The coupler 5112 couples the radio frequency signal to the synchronization module 57 through low noise amplification, the synchronization module 57 resolves 5G to obtain TDD uplink and downlink timeslot signals, and the TDD uplink and downlink timeslot signals are respectively provided to the uplink and downlink radio frequency switches, where the TDD timeslot signal is high level effective, and when the uplink timeslot signal is high level, the uplink radio frequency switch is turned on, and at the same time, the downlink radio frequency switch is low level and the downlink is turned off. Similarly, when the downlink timeslot signal is at a high level, the downlink is turned on and the uplink is turned off.

The cavity design, the circulator and the amplitude limiter can effectively improve the loop isolation.

Each circuit module of the product is separated by a cavity, and the shell is of an all-metal structure. The EMI and EMC problems can be well solved, and the heat dissipation is good.

The device has an input dynamic range of-100 dBm to-45 dBm, and the gains of an uplink and a downlink are 82dB respectively. Maximum output power 23 dBm; minimum output-18 dBm, 180dB isolation.

Example 4

As shown in fig. 4, a high-isolation 5G repeater includes a housing 1, a forward antenna 2 and a backward antenna 3 disposed on the housing 1, a cavity 4 disposed in the housing 1, and a control module 5;

the cavity 4 comprises a downlink preamplification cavity 41, a downlink power amplification cavity 42, an uplink power amplification cavity 43 and an uplink preamplification cavity 44 which are arranged in parallel with the downlink preamplification cavity 41 and the downlink power amplification cavity 42 in sequence, a synchronous cavity 45 arranged on one side of a forward signal control cavity 46, a forward signal control cavity 46 arranged at the front ends of the downlink preamplification cavity 41 and the uplink power amplification cavity 43, and a backward signal control cavity 47 arranged at the rear ends of the downlink power amplification cavity 42 and the uplink preamplification cavity 44;

the control module 5 comprises a forward signal control module 51, a downlink pre-amplification module 52, a downlink power amplification module 53 and a backward signal control module 54 which are electrically connected in sequence, an uplink pre-amplification module 55 and an uplink power amplification module 56 which are electrically connected with the backward signal control module 54 in sequence, and a synchronization module 57 which is electrically connected with the forward signal control module 51 and the backward signal control module 54, wherein the uplink power amplification module 56 is electrically connected with the forward signal control module 51;

the forward signal control module 51 is arranged in the forward signal control cavity 46, the forward signal control module 51 comprises a coupling filtering system 511, a first circulator 514 and a first radio frequency switch 512 which are sequentially and electrically connected, a third radio frequency switch 513 which is electrically connected with the other end of the first circulator 514, and the coupling filtering system 511 is electrically connected with the forward antenna 2;

the coupling filtering system 511 comprises a coupler 5111 and a second filter 5112 which are electrically connected, wherein the coupler 5111 is electrically connected with the first radio frequency switch 512 and the synchronization module 57, and the second filter 5112 is electrically connected with the forward antenna 2;

the downlink pre-amplification module 52 is arranged in the downlink pre-amplification cavity 41, the downlink pre-amplification module 52 includes a first low noise amplifier 521 and a first driving amplifier 522 which are electrically connected, the first low noise amplifier 521 is electrically connected with the first radio frequency switch 512, and the first driving amplifier 522 is electrically connected with the downlink power amplification module 53;

the downlink power amplification module 53 is arranged in the downlink power amplification cavity 42, the downlink power amplification module 53 includes a third driver amplifier 533, a first limiter 531 and a first power amplifier 532, which are electrically connected, and the first limiter 531 is electrically connected with the driver amplifier 522;

the backward signal control module 54 is arranged in the backward signal control cavity 47, the backward signal control module 54 includes a second rf switch 541, a first filter 542 and a fourth rf switch 543 electrically connected with the other end of the second circulator 544, the second rf switch 541 is electrically connected with the first power amplifier 532, the first filter 542 is electrically connected with the backward antenna 3, and the fourth rf switch 543 is electrically connected with the uplink power amplification module 56;

the upstream pre-amplification module 55 is disposed in the upstream pre-amplification cavity 44, the upstream pre-amplification module 55 includes a second low noise amplifier 551 and a second driving amplifier 552 electrically connected, and the second low noise amplifier 551 is electrically connected with the fourth rf switch 543;

the uplink power amplification module 56 is arranged in the uplink power amplification cavity 43, the uplink power amplification module 56 includes a fourth driving amplifier 563, a second limiter 561 and a second power amplifier 562 which are electrically connected in sequence, the second limiter 561 is electrically connected with a second low noise amplifier 551, the fourth driving amplifier 563 is electrically connected with a second driving amplifier 552, and the second power amplifier 562 is electrically connected with a third radio frequency switch 513;

the synchronization module 57 is disposed in the synchronization cavity 45, the synchronization module 57 includes a radio frequency channel 571 and an FPGA572, the radio frequency channel 571 is electrically connected to the coupling filter system 511, and the FPGA572 is electrically connected to the first radio frequency switch 512, the second radio frequency switch 541, the third radio frequency switch 513, and the fourth radio frequency switch 543.

The forward antenna 2 receives the downlink rf signal, after the second filter 5112, the coupler 5111 is coupled to the synchronization module 57, the synchronization module 57 performs cell search, calculates uplink and downlink timeslots, and outputs a timeslot control level to control the on/off of the first rf switch 512, the second rf switch 541, the third rf switch 513, and the fourth rf switch 543. The straight-through end passes through the first circulator 514 and the first radio frequency switch 512, the radio frequency switch is started to be down-link by a down-link time slot level, is amplified by the first low noise amplifier 521 and the first drive amplifier 522 of the down-link, passes through the third drive amplifier 533, the first amplitude limiter 531 and the first power amplifier 532, is started by the second radio frequency switch 541, is turned on by the second circulator 544, is filtered by the first filter 542, and then is down-link to the backward antenna (transmitting), and the radio frequency switches of the third radio frequency switch 513 and the fourth radio frequency switch 543 of the up-link are turned off;

the backward antenna 3 (receives) the uplink radio frequency signal. The uplink radio frequency signal passes through the first filter 542, the second circulator 544, the uplink slot level turn-on fourth radio frequency switch 543, is amplified by the second low noise amplifier 551 and the second drive amplifier 552 of the uplink, is amplified and limited by the fourth drive amplifier 563, the second limiter 561 and the second power amplifier 562, and is turned on by the third radio frequency switch 513, the first circulator 514 is turned on, and the downlink radio frequency switches turn-off the first radio frequency switch 512 and the second radio frequency switch 541, and go up to the forward antenna (transmission) by the coupler 5111 and the second filter 5112.

The multi-radio frequency switch controls the uplink and the downlink. The coupler 5112 couples the radio frequency signal to the synchronization module 57 through low noise amplification, the synchronization module 57 resolves 5G to obtain TDD uplink and downlink timeslot signals, and the TDD uplink and downlink timeslot signals are respectively provided to the uplink and downlink radio frequency switches, where the TDD timeslot signal is high level effective, and when the uplink timeslot signal is high level, the uplink radio frequency switch is turned on, and at the same time, the downlink radio frequency switch is low level and the downlink is turned off. Similarly, when the downlink timeslot signal is at a high level, the downlink is turned on and the uplink is turned off.

The loop isolation can be effectively improved by the cavity splitting design, the multi-radio-frequency light opening structure, the circulator and the amplitude limiter.

Each circuit module of the product is separated by a cavity, and the shell is of an all-metal structure. The EMI and EMC problems can be well solved, and the heat dissipation is good.

The device has an input dynamic range of-100 dBm to-45 dBm, and the gains of an uplink and a downlink are 82dB respectively. Maximum output power 23 dBm; minimum output-18 dBm, 180dB isolation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (10)

1. A high isolation 5G repeater is characterized in that: the antenna comprises a shell (1), a forward antenna (2) and a backward antenna (3) which are arranged on the shell (1), a cavity (4) and a control module (5) which are arranged in the shell (1);

the cavity (4) comprises a downlink preamplification cavity (41), a downlink power amplification cavity (42), an uplink power amplification cavity (43), an uplink preamplification cavity (44) and a synchronous cavity (45), wherein the downlink preamplification cavity (41) and the downlink power amplification cavity (42) are arranged in sequence;

the control module (5) comprises a forward signal control module (51), a downlink pre-amplification module (52), a downlink power amplification module (53) and a backward signal control module (54) which are sequentially and electrically connected, an uplink pre-amplification module (55) and an uplink power amplification module (56) which are sequentially and electrically connected with the backward signal control module (54), and a synchronization module (57) which is electrically connected with the forward signal control module (51) and the backward signal control module (54), wherein the uplink power amplification module (56) is electrically connected with the forward signal control module (51);

the forward signal control module (51) comprises a coupling filter system (511) and a first radio frequency switch (512) which are electrically connected, wherein the coupling filter system (511) is electrically connected with the forward antenna (2);

the downlink preamplifier module (52) is arranged in the downlink preamplifier cavity (41), the downlink preamplifier module (52) comprises a first low-noise amplifier (521), and the first low-noise amplifier (521) is electrically connected with the first radio-frequency switch (512);

the downlink power amplification module (53) is arranged in the downlink power amplification cavity (42), the downlink power amplification module (53) comprises a first amplitude limiter (531) and a first power amplifier (532) which are electrically connected, and the first amplitude limiter (531) is electrically connected with the first low noise amplifier (521);

the backward signal control module (54) comprises a second radio frequency switch (541) and a first filter (542) which are electrically connected, the second radio frequency switch (541) is electrically connected with the first power amplifier (532), and the first filter (542) is electrically connected with the backward antenna (3);

the upstream preamplifier module (55) is arranged in the upstream preamplifier cavity (44), and the upstream preamplifier module (55) comprises a second low-noise amplifier (551) electrically connected with the second radio-frequency switch (541);

the uplink power amplification module (56) is arranged in the uplink power amplification cavity (43), the uplink power amplification module (56) comprises a second amplitude limiter (561) and a second power amplifier (562) which are electrically connected, the second amplitude limiter (561) is electrically connected with the second low noise amplifier (551), and the second power amplifier (562) is electrically connected with the first radio frequency switch (512);

the synchronization module (57) is disposed in the synchronization cavity (45), and the synchronization module (57) is electrically connected to the coupling filter system (511), the first rf switch (512), and the second rf switch (541).

2. The high isolation 5G repeater according to claim 1, wherein: the cavity (4) further comprises a forward signal control cavity (46) arranged at the front end of the downlink pre-amplification cavity (41) and the front end of the uplink power amplification cavity (43), and the forward signal control module (51) is arranged in the forward signal control cavity (46).

3. The high isolation 5G repeater according to claim 1, wherein: the cavity (4) further comprises a backward signal control cavity (47) arranged at the rear ends of the downlink power amplification cavity (42) and the uplink pre-amplification cavity (44), and the backward signal control module (54) is arranged in the backward signal control cavity (47).

4. The high isolation 5G repeater according to claim 1, wherein: the synchronization module (57) comprises a radio frequency channel (571) and an FPGA (572) which are electrically connected, the radio frequency channel (571) is electrically connected with the coupling filter system (511), and the FPGA (572) is electrically connected with the first radio frequency switch (512) and the second radio frequency switch (541).

5. The high isolation 5G repeater according to claim 1, wherein: the coupling filtering system (511) comprises a coupler (5111) and a second filter (5112) which are electrically connected, wherein the coupler (5111) is electrically connected with the forward antenna (2) and the synchronization module (57), and the second filter (5112) is electrically connected with the first radio frequency switch (512).

6. The high isolation 5G repeater according to claim 1, wherein: the coupling filtering system (511) comprises a coupler (5111) and a second filter (5112) which are electrically connected, the second filter (5112) is electrically connected with the forward antenna (2), and the coupler (5111) is electrically connected with the first radio frequency switch (512) and the synchronization module (57).

7. The high isolation 5G repeater according to claim 1, wherein: the forward signal control module (51) further comprises a third radio frequency switch (513) arranged between the first radio frequency switch (512) and the downstream preamplifier module (52), wherein the third radio frequency switch (513) is electrically connected with the synchronization module (57);

the backward signal control module (54) further comprises a fourth radio frequency switch (543) arranged between the second radio frequency switch (541) and the uplink pre-amplification module (55), and the fourth radio frequency switch (543) is electrically connected with the synchronization module (57).

8. The high isolation 5G repeater according to claim 1, wherein: the forward signal control module (51) further comprises a first circulator (514) and a third radio frequency switch (513) which are electrically connected between the coupling filtering system (511) and the first radio frequency switch (512) in sequence, wherein the third radio frequency switch (513) is electrically connected with the other end of the first circulator (514), the third radio frequency switch (513) is electrically connected with the uplink power amplification module (56), and the third radio frequency switch (513) is electrically connected with the synchronization module (57);

the backward signal control module (54) further comprises a second circulator (544) and a fourth radio frequency switch (543), wherein the second circulator (544) is sequentially and electrically connected between the first filter (542) and the second radio frequency switch (541), the fourth radio frequency switch (543) is electrically connected with the other end of the second circulator (544), the fourth radio frequency switch (543) is electrically connected with the upstream pre-amplification module (55), and the fourth radio frequency switch (543) is electrically connected with the synchronization module (57).

9. The high isolation 5G repeater according to claim 1, wherein: the downlink preamplifier module (52) further comprises a first driving amplifier (522) electrically connected with the first low noise amplifier (521), and the first driving amplifier (522) is electrically connected with the downlink power amplifier module (53);

the upstream pre-amplification module (55) further comprises a second driver amplifier (552) electrically connected to the second low noise amplifier (551), the second driver amplifier (552) being electrically connected to the upstream power amplification module (56).

10. The high isolation 5G repeater according to any one of claims 1 to 9, wherein: the downlink power amplification module (53) further comprises a third driving amplifier (533) electrically connected to the downlink pre-amplification module (52) at one end and the first limiter (531) at the other end;

the uplink power amplification module (56) further comprises a fourth driving amplifier (563) with one end electrically connected with the uplink pre-amplification module (55) and the other end electrically connected with the second amplitude limiter (561);

the number of the downlink power amplification modules (53) and the uplink power amplification modules (56) is at least 1.

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