Repeater and communication system

Abstract

The utility model relates to the technical field of mobile communications, and discloses a repeater and a communication system, including: an MCU control circuit, a 4G radio frequency link, a 5G radio frequency link, and a radio frequency combining circuit; the MCU control circuit connects the 4G radio frequency link and the 5G radio frequency link; the radio frequency combining circuit connects the 4G radio frequency link and the 5G radio frequency link; compared with the existing 5G signal, which has a shorter coverage distance than the 4G signal, resulting in the existence of small and medium-sized signal blind spots, the utility model combines the 4G signal and the 5G signal and sends them out by an antenna, so that the 4G signal fills the areas that the 5G signal cannot cover, accurately covers the signal blind spots, and improves the frequency carrier utilization rate.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile communications, in particular to a repeater and a communication system. Background Art

[0002] With the rapid development of mobile Internet, new services and new businesses are constantly emerging, and mobile data business traffic is growing explosively. The 4G mobile communication system is difficult to meet the demand for the surge in mobile data traffic in the future. With the rapid development of 5G communication technology in recent years, 5G communication products have been fully commercialized in China, and the three major domestic operators are rapidly deploying 5G networks.

[0003] 5G base stations are more expensive than 4G base stations, and since operators' 5G packages are generally expensive, 4G services can meet the daily needs of many users, so the 4G network still has a large user base. In addition, the coverage distance of 5G signals is smaller than that of 4G signals, and there may be no 5G signal coverage in some areas. Therefore, it is necessary to combine 4G signals and 5G signals to design new repeaters for small and medium-sized signal blind spots. Utility Model Content

[0004] The utility model aims to provide a repeater station, aiming to solve the technical problem of small and medium-sized signal blind areas.

[0005] To achieve the above object, the utility model proposes a repeater, which comprises: an MCU control circuit, a 4G radio frequency link, a 5G radio frequency link and a radio frequency combining circuit;

[0006] The MCU control circuit connects the 4G radio frequency link and the 5G radio frequency link;

[0007] The radio frequency combining circuit connects the 4G radio frequency link and the 5G radio frequency link;

[0008] The RF combining circuit is used to receive the first combined signal through the antenna, transmit the 4G signal after the first combined signal is divided into frequencies to the 4G RF link, and transmit the 5G signal after the first combined signal is divided into frequencies to the 5G RF link;

[0009] The MCU control circuit is used to control the 4G radio frequency link and the 5G radio frequency link to amplify the 4G signal and the 5G signal;

[0010] The RF combining circuit is also used to receive the amplified 4G signal and the amplified 5G signal, generate a second combined signal from the amplified 4G signal and the amplified 5G signal, and send the second combined signal through an antenna.

[0011] In one embodiment, the radio frequency combining circuit includes: a first radio frequency combining circuit and a second radio frequency combining circuit;

[0012] The first RF combining circuit connects the first end of the 4G RF link and the first end of the 5G RF link; the second RF combining circuit connects the second end of the 4G RF link and the second end of the 5G RF link;

[0013] The first RF combining circuit is used to receive a downlink first combined signal through an antenna, transmit a downlink 4G signal after frequency division of the downlink first combined signal to the 4G RF link, and transmit a downlink 5G signal after frequency division of the downlink first combined signal to the 5G RF link;

[0014] The MCU control circuit is also used to control the 4G radio frequency link and the 5G radio frequency link to amplify the downlink 4G signal and the downlink 5G signal;

[0015] The second RF combining circuit is used to receive the amplified downlink 4G signal and the amplified downlink 5G signal, generate a downlink second combined signal from the amplified downlink 4G signal and the amplified downlink 5G signal, and send the downlink second combined signal through an antenna;

[0016] The second RF combining circuit is further used to receive the uplink first combined signal through the antenna, transmit the uplink 4G signal after the uplink first combined signal is divided to the 4G RF link, and transmit the uplink 5G signal after the uplink first combined signal is divided to the 5G RF link;

[0017] The MCU control circuit is further used to control the 4G radio frequency link and the 5G radio frequency link to amplify the uplink 4G signal and the uplink 5G signal;

[0018] The first RF combining circuit is also used to receive the amplified uplink 4G signal and the amplified uplink 5G signal, generate an uplink second combined signal from the amplified uplink 4G signal and the amplified uplink 5G signal, and send the uplink second combined signal through an antenna.

[0019] In one embodiment, the first RF combining circuit includes: a first combiner, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;

[0020] The input end of the first combiner is connected to the second end of the second capacitor, the first output end of the first combiner is connected to the first end of the third capacitor, the first end of the fourth capacitor and the first end of the fifth capacitor, and the second output end of the first combiner is connected to the first end of the sixth capacitor and the input end of the 5G radio frequency link;

[0021] A first end of the first capacitor is connected to the antenna and a first end of the second capacitor, and a second end of the first capacitor is grounded;

[0022] The second end of the third capacitor, the second end of the fourth capacitor and the second end of the sixth capacitor are grounded;

[0023] The second end of the fifth capacitor is connected to the input end of the 4G radio frequency link.

[0024] In one embodiment, the second radio frequency combining circuit includes: a second combiner, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor and a fifteenth capacitor;

[0025] The input end of the second combiner is connected to the first end of the twelfth capacitor and the first end of the fourteenth capacitor, the first output end of the second combiner is connected to the first ends of the eighth capacitor, the ninth capacitor and the tenth capacitor, and the second output end of the second combiner is connected to the first end of the eleventh capacitor and the output end of the 5G radio frequency link;

[0026] The second ends of the seventh capacitor, the ninth capacitor, the tenth capacitor and the eleventh capacitor are grounded;

[0027] The second end of the eighth capacitor is connected to the first end of the seventh capacitor and the output end of the 4G radio frequency link;

[0028] The second end of the twelfth capacitor is connected to the first end of the thirteenth capacitor and the antenna;

[0029] The second end of the thirteenth capacitor is grounded;

[0030] The second end of the fourteenth capacitor is connected to the external connector and the first end of the fifteenth capacitor;

[0031] A second terminal of the fifteenth capacitor is grounded.

[0032] In one embodiment, the repeater includes: a Bluetooth module;

[0033] The Bluetooth module is connected to the MCU control circuit via a universal synchronous / asynchronous receiver / transmitter;

[0034] The MCU control circuit is further used to receive a parameter adjustment signal input through the Bluetooth module and perform parameter adjustment based on the adjustment signal; or,

[0035] The repeater also includes: a 5G synchronization module;

[0036] The 5G synchronization module is connected to the MCU control circuit via a universal synchronous / asynchronous receiver / transmitter;

[0037] The MCU control circuit is also used to query the synchronization parameters of the 5G synchronization module and output them.

[0038] In one embodiment, the 4G radio frequency link includes: a first duplexer, a second duplexer, a 4G uplink branch, and a 4G downlink branch;

[0039] The first end of the first duplexer is connected to the RF combiner circuit, the second end of the first duplexer is connected to the first end of the 4G uplink branch, and the second end of the 4G uplink branch is connected to the first end of the second duplexer;

[0040] The second end of the second duplexer is connected to the first end of the 4G downlink branch, the third end of the second duplexer is connected to the RF combiner circuit, and the second end of the 4G downlink branch is connected to the third end of the first duplexer.

[0041] In one embodiment, the 4G uplink branch and the 4G downlink branch each include: a first filter, a first low noise amplifier, a second filter, a first digitally controlled attenuator, a first gain module, a third filter, a second gain module, a fourth filter and a first final power amplifier;

[0042] The first end of the first filter is connected to the second end of the first duplexer, and the second end of the first filter is connected to the first end of the first low noise amplifier;

[0043] The second end of the first low noise amplifier is connected to the first end of the second filter;

[0044] The second end of the second filter is connected to the first end of the first digitally controlled attenuator;

[0045] The second end of the first digitally controlled attenuator is connected to the first end of the first gain module;

[0046] The second end of the first gain module is connected to the first end of the third filter;

[0047] The second end of the third filter is connected to the first end of the second gain module;

[0048] The second end of the second gain module is connected to the first end of the fourth filter;

[0049] The second end of the fourth filter is connected to the first end of the first final stage power amplifier;

[0050] The second end of the first final stage power amplifier is connected to the first end of the second duplexer.

[0051] In one embodiment, the 5G radio frequency link includes: a first low insertion loss filter, a second low insertion loss filter, a first radio frequency switch, a second radio frequency switch, a 5G uplink branch, and a 5G downlink branch;

[0052] A first end of the first low insertion loss filter is connected to the RF combiner circuit, a second end of the first low insertion loss filter is connected to a first end of the first RF switch, a second end of the first RF switch is connected to a first end of the 5G uplink branch, and a second end of the 5G uplink branch is connected to a first end of the second RF switch;

[0053] The first end of the second low insertion loss filter is connected to the RF combining circuit, the second end of the second low insertion loss filter is connected to the third end of the second RF switch, the second end of the second RF switch is connected to the first end of the 5G downlink branch, and the second end of the 5G downlink branch is connected to the third end of the first RF switch.

[0054] In one embodiment, the 5G uplink branch and the 5G downlink branch each include: a fifth filter, a second low noise amplifier, a sixth filter, a second digitally controlled attenuator, a third gain module, a seventh filter, a fourth gain module, an eighth filter, and a second final power amplifier;

[0055] The first end of the fifth filter is connected to the second end of the first RF switch, and the second end of the fifth filter is connected to the first end of the second low noise amplifier;

[0056] The second end of the second low noise amplifier is connected to the first end of the sixth filter;

[0057] The second end of the sixth filter is connected to the first end of the second digitally controlled attenuator;

[0058] The second end of the second digitally controlled attenuator is connected to the first end of the third gain module;

[0059] The second end of the third gain module is connected to the first end of the seventh filter;

[0060] The second end of the seventh filter is connected to the first end of the fourth gain module;

[0061] The second end of the fourth gain module is connected to the first end of the eighth filter;

[0062] The second end of the eighth filter is connected to the first end of the second final stage power amplifier;

[0063] The second end of the second final-stage power amplifier is connected to the first end of the second radio frequency switch.

[0064] In addition, to achieve the above-mentioned purpose, the utility model also proposes a communication system, which comprises: a donor antenna, a retransmission antenna and the repeater as described above;

[0065] The donor antenna and the retransmission antenna are both connected to the repeater.

[0066] The utility model proposes a repeater, which includes: an MCU control circuit, a 4G radio frequency link, a 5G radio frequency link and a radio frequency combining circuit; the MCU control circuit is connected to the 4G radio frequency link and the 5G radio frequency link; the radio frequency combining circuit is connected to the 4G radio frequency link and the 5G radio frequency link; the radio frequency combining circuit is used to receive a combined signal input from the outside through the antenna, output the 4G signal after the combined signal is divided to the MCU control circuit through the 4G radio frequency link, and output the 5G signal after the combined signal is divided to the MCU control circuit through the 5G radio frequency link; the radio frequency combining circuit is also used to receive the 4G signal input by the MCU control circuit through the 4G radio frequency link and the 5G signal input by the MCU control circuit through the 5G radio frequency link, combine the 4G signal and the 5G signal to generate a combined signal, and send the combined signal through the antenna. Compared with the existing 5G signal, which has a shorter coverage distance than the 4G signal, resulting in the existence of small and medium-sized signal blind spots, the utility model combines the 4G signal and the 5G signal and sends them out by the antenna, so that the 4G signal can supplement the areas that the 5G signal cannot cover, accurately covering the signal blind spots and improving the frequency carrier utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a first structural schematic diagram of the first embodiment of the repeater proposed in the embodiment of the utility model;

[0068] Figure 2 A second structural schematic diagram of the first embodiment of the repeater proposed in the embodiment of the utility model;

[0069] Figure 3 A first circuit schematic diagram of a second embodiment of a repeater proposed in an embodiment of the utility model;

[0070] Figure 4 A second circuit schematic diagram of the second embodiment of the repeater proposed in the embodiment of the utility model;

[0071] Figure 5 A first principle block diagram of a third embodiment of a repeater proposed in an embodiment of the utility model;

[0072] Figure 6 This is a second principle block diagram of the third embodiment of the repeater proposed in the embodiment of the utility model.

[0073] Description of Figure Numbers:

[0074] Label illustrate Label illustrate 100 MCU control circuit 320 5G downlink branch 200 4G RF Link R1-R15 Capacitors 1 to 11 300 5G RF Link U1-U2 First to second combiner 400 RF Combiner Circuit ANTD1-ANTD2 First to second duplexer 410 The first RF combining circuit RF1-RF2 First to second RF switch 420 Second RF combining circuit LF1-LF2 First to second low insertion loss filter 110 Bluetooth module F1-F8 1st to 8th filters 120 5G synchronization module LNA1-LNA2 First to second low noise amplifier 210 4G uplink branch G1-G4 The first to fourth gain blocks 220 4G downlink branch ATT1-ATT2 First to second digital controlled attenuator 310 5G uplink branch PA1-PA2 First to second final amplifier DETAILED DESCRIPTION

[0075] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present invention and are not used to limit the present invention.

[0076] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0077] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0078] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0079] Embodiment 1

[0080] Reference Figure 1 , Figure 1 It is a first structural schematic diagram of the first embodiment of the repeater proposed in the embodiment of the utility model.

[0081] Reference Figure 1 , the repeater includes: an MCU control circuit 100, a 4G radio frequency link 200, a 5G radio frequency link 300 and a radio frequency combining circuit 400;

[0082] The MCU control circuit 100 connects the 4G radio frequency link 200 and the 5G radio frequency link 300;

[0083] The RF combining circuit 400 connects the 4G RF link 200 and the 5G RF link 300 .

[0084] It should be noted that the 4G radio frequency link 200 supports the FDD standard Band 3 frequency band, wherein the Band 3 frequency band supports the full frequency band of 1710-1785MHz for uplink and 1805-1880MHz for downlink, or the mobile uplink 1710-1735MHz and downlink 1805-1830MHz or the China Unicom Telecom uplink 1735-1785MHz and downlink 1830-1880MHz; the 5G radio frequency link 300 supports the TDD standard N41 or N78 frequency band, for example, it supports the mobile N41 frequency band 2515-2675MHz, the China Unicom Telecom N78 frequency band 3400-3600MHz, 3400-3500MHz, 3500-3600MHz or the full frequency band of 3400-3600MHz.

[0085] It should be understood that the above-mentioned N41 and N78 frequency band RF boards adopt independent PCB design, which can be matched with two major categories of products, Band3&N41 dual-band and Band41&N78 dual-band, according to market demand; the RF of the 4G RF link 200 is connected to the PCB of the 5G RF link 300 through an RF jumper and then combined with the 5G RF link 300; the above-mentioned MUC control circuit is designed in the 4G RF link 200 and connected to the 5G RF link 300 through an FFC cable.

[0086] The RF combining circuit 400 is configured to receive a first combined signal through an antenna, transmit a 4G signal after the first combined signal is divided into two frequencies to the 4G RF link 200, and transmit a 5G signal after the first combined signal is divided into two frequencies to the 5G RF link 300;

[0087] The MCU control circuit 100 is used to control the 4G radio frequency link 200 and the 5G radio frequency link 300 to amplify the 4G signal and the 5G signal;

[0088] The RF combining circuit 400 is further used to receive the amplified 4G signal and the amplified 5G signal, generate a second combined signal from the amplified 4G signal and the amplified 5G signal, and send the second combined signal through an antenna.

[0089] It should be understood that the antenna is an external donor antenna, an external retransmission antenna or an internal retransmission antenna, all of which can transmit and receive signals and are connected to the repeater.

[0090] It should be noted that the above-mentioned "externally input combined signals" can be 4G and 5G combined signals emitted by a base station, or 4G and 5G combined signals emitted by a mobile terminal; the 4G signal and 5G signal before the above-mentioned "generation of combined signals" are 4G signals and 5G signals after being processed by the above-mentioned MCU control circuit 100, 4G RF link 200 and 5G RF link 300.

[0091] To summarize, the RF combining circuit 400 receives the first combined signal through the antenna, transmits the 4G signal after the first combined signal is divided to the 4G RF link 200, and transmits the 5G signal after the first combined signal is divided to the 5G RF link 300; the MCU control circuit 100 controls the 4G RF link 200 and the 5G RF link 300 to amplify the 4G signal and the 5G signal; the RF combining circuit 400 then receives the amplified 4G signal and the amplified 5G signal, generates a second combined signal from the amplified 4G signal and the amplified 5G signal and sends the second combined signal through the antenna, so that the second combined signal contains both the 4G signal and the 5G signal, so that the 4G signal fills the areas that the 5G signal cannot cover, thereby accurately covering the signal blind spots.

[0092] Reference Figure 2 , Figure 2 This is a second structural schematic diagram of the first embodiment of the repeater proposed in the embodiment of the utility model.

[0093] Reference Figure 2 , the RF combining circuit 400 includes: a first RF combining circuit 410 and a second RF combining circuit 420;

[0094] The first RF combining circuit 410 connects the first end of the 4G RF link 200 and the first end of the 5G RF link 300; the second RF combining circuit 420 connects the second end of the 4G RF link 200 and the second end of the 5G RF link 300.

[0095] It should be understood that the above-mentioned first RF combining circuit 410 and the second RF combining circuit 420 can not only combine the 4G signal and the 5G signal, but also branch the 4G and 5G combined signal emitted by the above-mentioned base station and the 4G and 5G combined signal emitted by the mobile terminal, and also share them through multi-layer antennas so that the 4G signal and the 5G signal can be received and sent normally without interfering with each other.

[0096] The first RF combiner circuit 410 is configured to receive a first downlink combined signal through an antenna, transmit a downlink 4G signal after frequency division of the first downlink combined signal to the 4G RF link 200, and transmit a downlink 5G signal after frequency division of the first downlink combined signal to the 5G RF link 300;

[0097] The MCU control circuit 100 is further used to control the 4G radio frequency link 200 and the 5G radio frequency link 300 to amplify the downlink 4G signal and the downlink 5G signal;

[0098] The second RF combining circuit 420 is used to receive the amplified downlink 4G signal and the amplified downlink 5G signal, generate a downlink second combined signal from the amplified downlink 4G signal and the amplified downlink 5G signal, and send the downlink second combined signal through an antenna.

[0099] It should be understood that the above-mentioned downlink 4G signal frequency range corresponds to the above-mentioned Band 3 frequency band downlink supporting the full frequency band of 1805-1880MHz or the mobile downlink 1805-1830MHz or the China Unicom Telecom downlink 1830-1880MHz; the downlink 5G signal corresponding frequency range corresponds to the above-mentioned support for mobile N41 frequency band 2515-2675MHz, China Unicom Telecom N78 frequency band 3400-3600MHz, including 3400-3500MHz, 3500-3600MHz or 3400-3600MHz full frequency band.

[0100] The second RF combiner circuit 420 is further configured to receive an uplink first combined signal through an antenna, transmit an uplink 4G signal after frequency division of the uplink first combined signal to the 4G RF link 200, and transmit an uplink 5G signal after frequency division of the uplink first combined signal to the 5G RF link 300;

[0101] The MCU control circuit 100 is further used to control the 4G radio frequency link 200 and the 5G radio frequency link 300 to amplify the uplink 4G signal and the uplink 5G signal;

[0102] The first RF combining circuit 410 is further used to receive the amplified uplink 4G signal and the amplified uplink 5G signal, generate an uplink second combined signal from the amplified uplink 4G signal and the amplified uplink 5G signal, and send the uplink second combined signal through an antenna.

[0103] It should be understood that the above-mentioned uplink 4G signal frequency range corresponds to the above-mentioned Band 3 frequency band supporting uplink 1710~1785MHz or mobile uplink 1710~1735MHz or China Unicom Telecom uplink 1735~1785MHz; the uplink 5G signal corresponds to the frequency range corresponding to the above-mentioned support for mobile N41 frequency band 2515~2675MHz, China Unicom Telecom N78 frequency band 3400~3600MHz, including 3400~3500MHz, 3500~3600MHz or 3400~3600MHz full frequency band.

[0104] In this embodiment, when the base station sends a downlink combined signal, the first RF combining circuit 410 receives the downlink first combined signal through the antenna, transmits the downlink 4G signal after the downlink first combined signal is divided to the 4G RF link 200, and transmits the downlink 5G signal after the downlink first combined signal is divided to the 5G RF link 300; the MCU control circuit 100 controls the 4G RF link 200 and the 5G RF link 300 to amplify the downlink 4G signal and the downlink 5G signal; the second RF combining circuit 420 receives the amplified downlink 4G signal and the amplified downlink 5G signal, generates a downlink second combined signal from the amplified downlink 4G signal and the amplified downlink 5G signal, and sends the downlink second combined signal through the antenna.

[0105] When the mobile terminal sends an uplink combined signal, the second RF combining circuit 420 receives the uplink first combined signal through the antenna, transmits the uplink 4G signal after the uplink first combined signal is divided to the 4G RF link 200, and transmits the uplink 5G signal after the uplink first combined signal is divided to the 5G RF link 300; the MCU control circuit 100 controls the 4G RF link 200 and the 5G RF link 300 to amplify the uplink 4G signal and the uplink 5G signal; the first RF combining circuit 410 receives the amplified uplink 4G signal and the amplified uplink 5G signal, generates the uplink second combined signal from the amplified uplink 4G signal and the amplified uplink 5G signal, and sends the uplink second combined signal through the antenna. At this time, the above-mentioned downlink combined signal and uplink combined signal contain both 4G and 5G signals, so that the 4G signal fills the areas that the 5G signal cannot cover, thereby accurately covering the signal blind area.

[0106] Embodiment 2

[0107] Reference Figure 3 , Figure 3 This is a first circuit schematic diagram of the second embodiment of the repeater proposed in the embodiment of the utility model.

[0108] Reference Figure 3 , the first RF combining circuit 410 includes: a first combiner U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a sixth capacitor C6;

[0109] The input end of the first combiner U1 is connected to the second end of the second capacitor C2, the first output end of the first combiner U1 is connected to the first end of the third capacitor C3, the first end of the fourth capacitor C4 and the first end of the fifth capacitor C5, and the second output end of the first combiner U1 is connected to the first end of the sixth capacitor C6 and the input end of the 5G radio frequency link 300;

[0110] A first end of the first capacitor C1 is connected to the antenna and a first end of the second capacitor C2, and a second end of the first capacitor C1 is grounded;

[0111] The second end of the third capacitor C3, the second end of the fourth capacitor C4 and the second end of the sixth capacitor C6 are grounded;

[0112] A second end of the fifth capacitor C5 is connected to an input end of the 4G RF link 200 .

[0113] It should be understood that the above-mentioned first combiner U1 contains multiple layers of antennas so that the combiner can receive and send different signals, and can also combine two different signals without affecting the two different signals when they are received and sent by the combiner; using this type of combiner can reduce the noise coefficient of the receiving port, thereby improving the sensitivity of the receiving circuit and appropriately increasing the maximum output power of the whole machine.

[0114] It should be noted that the function of the above capacitors is to filter out noise in the signal.

[0115] Reference Figure 4 , Figure 4 This is a second circuit schematic diagram of the second embodiment of the repeater proposed in the embodiment of the utility model.

[0116] The second RF combiner circuit 420 includes: a first combiner U2, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14 and a fifteenth capacitor C15;

[0117] The input end of the first combiner U2 is connected to the first ends of the twelfth capacitor C12 and the fourteenth capacitor C14, the first output end of the first combiner U2 is connected to the first ends of the eighth capacitor C8, the ninth capacitor C9 and the tenth capacitor C10, and the second output end of the first combiner U2 is connected to the first end of the eleventh capacitor C11 and the output end of the 5G radio frequency link 300;

[0118] The second ends of the seventh capacitor C7, the ninth capacitor C9, the tenth capacitor C10 and the eleventh capacitor C11 are grounded;

[0119] The second end of the eighth capacitor C8 is connected to the first end of the seventh capacitor C7 and the output end of the 4G radio frequency link 200;

[0120] The second end of the twelfth capacitor C12 is connected to the first end of the thirteenth capacitor C13 and the antenna;

[0121] A second end of the thirteenth capacitor C13 is grounded;

[0122] The second end of the fourteenth capacitor C14 is connected to the external connector and the first end of the fifteenth capacitor C15;

[0123] A second terminal of the fifteenth capacitor C15 is grounded.

[0124] It should be noted that the function of the first combiner U2 is the same as that of the first combiner U1 , which will not be described in detail here.

[0125] It should be noted that the function of the above capacitors is to filter out noise in the signal.

[0126] In this embodiment, when the base station sends a downlink first combined signal, the antenna receives the externally input downlink first combined signal to the first combiner U1, the first combiner U1 divides the downlink first combined signal into a downlink 4G signal and a downlink 5G signal, and outputs it to the MCU control circuit 100 through the 4G RF link 200 and the 5G RF link 300, and then is filtered by the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, and the eleventh capacitor C11 and transmitted to the first combiner U2, the first combiner U2 combines the downlink 4G signal and the downlink 5G signal to generate a downlink second combined signal, and sends the downlink second combined signal through the antenna.

[0127] When the mobile terminal sends the first uplink combined signal, the antenna receives the first uplink combined signal input externally to the first combiner U2, and the first combiner U2 divides the first uplink combined signal into an uplink 4G signal and an uplink 5G signal, and outputs it to the MCU control circuit 100 through the 4G radio frequency link 200 and the 5G radio frequency link 300, and then transmits it to the first combiner U1 after filtering by the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6, and the first combiner U1 combines the uplink 4G signal and the uplink 5G signal to generate an uplink second combined signal, and sends the uplink second combined signal through the antenna. At this time, the above-mentioned downlink combined signal and the uplink first combined signal contain both 4G signals and 5G signals, so that the 4G signal fills the areas that the 5G signal cannot cover, thereby accurately covering the signal blind area.

[0128] Embodiment 3

[0129] To facilitate users to query repeater related parameters, the repeater includes: a Bluetooth module 110;

[0130] The Bluetooth module 110 is connected to the MCU control circuit 100 via a universal synchronous / asynchronous receiver / transmitter;

[0131] The MCU control circuit 100 is further configured to receive a parameter adjustment signal input through the Bluetooth module 110 and perform parameter adjustment based on the adjustment signal.

[0132] It should be noted that the above-mentioned Bluetooth module 110 is provided to facilitate the user to connect to the repeater device via the mobile phone Bluetooth and query and set the relevant parameters of the repeater.

[0133] It should be understood that the parameter adjustment signal is determined by a signal transmitted from the user to the Bluetooth module 110 via Bluetooth.

[0134] The repeater station further includes: a 5G synchronization module 120;

[0135] The 5G synchronization module 120 is connected to the MCU control circuit 100 via a universal synchronous / asynchronous receiver and transmitter;

[0136] The MCU control circuit 100 is also used to query the synchronization parameters of the 5G synchronization module 120 and output them.

[0137] It should be understood that the relevant parameters in the above-mentioned 5G synchronization module 120 are transmitted to the above-mentioned Bluetooth module 110 via the synchronous / asynchronous transceiver.

[0138] Reference Figure 5 , Figure 5 This is a first principle block diagram of the third embodiment of the repeater proposed in the embodiment of the utility model.

[0139] Reference Figure 5 , the 4G radio frequency link 200 includes: a first duplexer ANTD1, a second duplexer ANTD2, a 4G uplink branch 210 and a 4G downlink branch 220;

[0140] A first end of the first duplexer ANTD1 is connected to the RF combiner circuit, a second end of the first duplexer ANTD1 is connected to a first end of the 4G uplink branch 210, and a second end of the 4G uplink branch 210 is connected to a first end of the second duplexer ANTD2;

[0141] The second end of the second duplexer ANTD2 is connected to the first end of the 4G downlink branch 220 , the third end of the second duplexer ANTD2 is connected to the RF combiner circuit, and the second end of the 4G downlink branch 220 is connected to the third end of the first duplexer ANTD1 .

[0142] It should be understood that the above-mentioned first duplexer ANTD1 and the second duplexer ANTD2 are only used for transmitting and receiving downlink 4G signals in the second embodiment, and replace the filter to increase the suppression capability of the downlink edge intersection 1795MHz. The duplexer has a suppression capability of 24dB at 1795MHz, while the 1805-1880MHz filter has a suppression capability of only 5dB at 1795MHz, so as to achieve the function of supporting the full frequency bands of 1710-1785MHz for uplink and 1805-1880MHz for downlink.

[0143] It should be noted that the filters in the above-mentioned 4G uplink branch 210 and the 4G downlink branch 220 are different. The filter used in the 4G uplink branch 210 is a 1710-1785MHz filter, and the filter used in the 4G downlink branch 220 is a 1805-1880MHz filter, and the internal signal directions of the above-mentioned 4G uplink branch 210 and 4G downlink branch 220 are opposite.

[0144] It should be understood that the filter names of the 4G uplink branch 210 and the 4G downlink branch 220 in the following text are only used to illustrate the branch structure, and the specific models can be found in the above filter description.

[0145] The 4G uplink branch 210 and the 4G downlink branch 220 both include: a first filter F1, a first low noise amplifier LNA1, a second filter F2, a first digitally controlled attenuator ATT1, a first gain module G1, a third filter F3, a second gain module G2, a fourth filter F4 and a first final stage power amplifier PA1;

[0146] A first end of the first filter F1 is connected to a second end of the first duplexer ANTD1, and a second end of the first filter F1 is connected to a first end of the first low noise amplifier LNA1;

[0147] The second end of the first low noise amplifier LNA1 is connected to the first end of the second filter F2;

[0148] The second end of the second filter F2 is connected to the first end of the first digitally controlled attenuator ATT1;

[0149] The second end of the first digitally controlled attenuator ATT1 is connected to the first end of the first gain module G1;

[0150] The second end of the first gain module G1 is connected to the first end of the third filter F3;

[0151] The second end of the third filter F3 is connected to the first end of the second gain module G2;

[0152] The second end of the second gain module G2 is connected to the first end of the fourth filter F4;

[0153] The second end of the fourth filter F4 is connected to the first end of the first final stage power amplifier PA1;

[0154] The second end of the first final-stage power amplifier PA1 is connected to the first end of the second duplexer ANTD2.

[0155] It should be noted that the first low noise amplifier LNA1 is used to enhance weak uplink and downlink 4G signals and provide better input signals for subsequent devices without affecting their signal-to-noise ratio; the first digitally controlled attenuator ATT1 is used to control the amplitude of uplink and downlink 4G signals to meet different application requirements; the first gain module G1 and the second gain module G2 are used to amplify uplink and downlink 4G signals, improve the quality of uplink and downlink 4G signals, compensate for uplink and downlink 4G signal losses and adjust the uplink and downlink 4G signal strengths; the first final power amplifier PA1 is used to amplify uplink and downlink 4G signals.

[0156] Reference Figure 6 , Figure 6 This is a second principle block diagram of the third embodiment of the repeater proposed in the embodiment of the utility model.

[0157] Reference Figure 6 , the 5G radio frequency link 300 includes: a first low insertion loss filter LF1, a second low insertion loss filter LF2, a first radio frequency switch RF1, a second radio frequency switch RF2, a 5G uplink branch 310 and a 5G downlink branch 320;

[0158] A first end of the first low insertion loss filter LF1 is connected to the RF combiner circuit, a second end of the first low insertion loss filter LF1 is connected to a first end of the first RF switch RF1, a second end of the first RF switch RF1 is connected to a first end of the 5G uplink branch 310, and a second end of the 5G uplink branch 310 is connected to a first end of the second RF switch RF2;

[0159] The first end of the second low insertion loss filter LF2 is connected to the RF combining circuit, the second end of the second low insertion loss filter LF2 is connected to the third end of the second RF switch RF2, the second end of the second RF switch RF2 is connected to the first end of the 5G downlink branch 320, and the second end of the 5G downlink branch 320 is connected to the third end of the first RF switch RF1.

[0160] It should be noted that the setting of the above-mentioned first low insertion loss filter LF1 and the second low insertion loss filter LF2 can increase the ability of the system receiving link to prevent blocking, and increase the isolation between the 5G frequency band and the 4G frequency band; the above-mentioned first RF switch RF1 and the second RF switch RF2 are used to select the signal flow direction between different paths.

[0161] The 5G uplink branch 310 and the 5G downlink branch 320 both include: a fifth filter F5, a second low noise amplifier LNA2, a sixth filter F6, a second digitally controlled attenuator ATT2, a third gain module G3, a seventh filter F7, a fourth gain module G4, an eighth filter F8 and a second final stage power amplifier PA2;

[0162] A first end of the fifth filter F5 is connected to a second end of the first radio frequency switch RF1, and a second end of the fifth filter F5 is connected to a first end of the second low noise amplifier LNA2;

[0163] The second end of the second low noise amplifier LNA2 is connected to the first end of the sixth filter F6;

[0164] The second end of the sixth filter F6 is connected to the first end of the second digitally controlled attenuator ATT2;

[0165] The second end of the second digitally controlled attenuator ATT2 is connected to the first end of the third gain module G3;

[0166] The second end of the third gain module G3 is connected to the first end of the seventh filter F7;

[0167] The second end of the seventh filter F7 is connected to the first end of the fourth gain module G4;

[0168] The second end of the fourth gain module G4 is connected to the first end of the eighth filter F8;

[0169] The second end of the eighth filter F8 is connected to the first end of the second final stage power amplifier PA2;

[0170] The second end of the second final-stage power amplifier PA2 is connected to the first end of the second radio frequency switch RF2.

[0171] It should be noted that the second low noise amplifier LNA2 is used to enhance weak uplink and downlink 5G signals and provide better input signals for subsequent devices without affecting their signal-to-noise ratio; the second digitally controlled attenuator ATT2 is used to control the amplitude of uplink and downlink 5G signals to meet different application requirements; the third gain module G3 and the fourth gain module G4 are used to amplify uplink and downlink 5G signals, improve the quality of uplink and downlink 5G signals, compensate for the loss of uplink and downlink 5G signals and adjust the strength of uplink and downlink 5G signals; the second final power amplifier PA2 is used to amplify the uplink and downlink 5G signals.

[0172] In this embodiment, when the base station sends a downlink first combined signal, the downlink combined signal is divided into a downlink 4G signal and a downlink 5G signal by the first combiner U1 in the second embodiment, and the downlink 4G signal is respectively transmitted by the first duplexer ANTD1, filtered by the first filter F1, amplified by the first low noise amplifier LNA1, filtered by the second filter F2, amplitude controlled by the first digitally controlled attenuator ATT1, amplified by the first gain module G1, filtered by the third filter F3, amplified by the second gain module G2, filtered by the fourth filter F4 and amplified by the first final power amplifier PA1, and then transmitted to the above The second duplexer ANTD2; the downlink 5G signal will be filtered by the first low insertion loss filter LF1, transmitted by the first RF switch RF1, filtered by the fifth filter F5, amplified by the second low noise amplifier LNA2, filtered by the sixth filter F6, amplitude controlled by the second digitally controlled attenuator ATT2, amplified by the third gain module G3, filtered by the seventh filter F7, amplified by the fourth gain module G4, filtered by the eighth filter F8 and amplified by the second final stage power amplifier PA2, and then transmitted to the above-mentioned second RF switch RF2, and then transmitted by the second RF switch RF2 to the above-mentioned second low insertion loss filter LF2 for filtering.

[0173] When the mobile terminal sends an uplink first combined signal, the uplink combined signal is divided into an uplink 4G signal and an uplink 5G signal by the first combiner U2 in the second embodiment, and the uplink 4G signal is respectively transmitted by the second duplexer ANTD2, filtered by the first filter F1, amplified by the first low noise amplifier LNA1, filtered by the second filter F2, amplitude controlled by the first digitally controlled attenuator ATT1, amplified by the first gain module G1, filtered by the third filter F3, amplified by the second gain module G2, filtered by the fourth filter F4 and amplified by the first final power amplifier PA1, and then transmitted to the above-mentioned first duplexer. The uplink 5G signal will be filtered by the second low insertion loss filter LF2, transmitted by the second RF switch RF2, filtered by the fifth filter F5, amplified by the second low noise amplifier LNA2, filtered by the sixth filter F6, controlled by the second digital attenuator ATT2, amplified by the third gain module G3, filtered by the seventh filter F7, amplified by the fourth gain module G4, filtered by the eighth filter F8, and amplified by the second final power amplifier PA2 before being transmitted to the first RF switch RF1, and then transmitted by the first RF switch RF1 to the first low insertion loss filter LF1 for filtering. The amplified uplink and downlink 4G signals and the uplink and downlink 5G signals are combined into uplink and downlink combined signals. Compared with the existing 5G signal, which has a smaller coverage distance than the 4G signal, resulting in the existence of small and medium-sized signal blind spots, the utility model combines the 4G signal and the 5G signal and sends them out by the antenna, so that the 4G signal can fill the areas that the 5G signal cannot cover, accurately covering the signal blind spots and improving the frequency carrier utilization rate.

[0174] To achieve the above-mentioned purpose, the utility model also proposes a communication system, which includes a repeater as described above. The specific structure of the repeater refers to the above-mentioned embodiment. Since the communication system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0175] The above are only some embodiments of the present invention, and the scope of implementation of the present invention is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A repeater, characterized in that: The repeater station includes: an MCU control circuit, a 4G radio frequency link, a 5G radio frequency link and a radio frequency combining circuit; The MCU control circuit connects the 4G radio frequency link and the 5G radio frequency link; The radio frequency combining circuit connects the 4G radio frequency link and the 5G radio frequency link; The RF combining circuit is used to receive the first combined signal through the antenna, transmit the 4G signal after the first combined signal is divided into frequencies to the 4G RF link, and transmit the 5G signal after the first combined signal is divided into frequencies to the 5G RF link; The MCU control circuit is used to control the 4G radio frequency link and the 5G radio frequency link to amplify the 4G signal and the 5G signal; The RF combining circuit is also used to receive the amplified 4G signal and the amplified 5G signal, generate a second combined signal from the amplified 4G signal and the amplified 5G signal, and send the second combined signal through an antenna.

2. The repeater according to claim 1, characterized in that: The radio frequency combining circuit comprises: a first radio frequency combining circuit and a second radio frequency combining circuit; The first RF combining circuit connects the first end of the 4G RF link and the first end of the 5G RF link; the second RF combining circuit connects the second end of the 4G RF link and the second end of the 5G RF link; The first RF combining circuit is used to receive a downlink first combined signal through an antenna, transmit a downlink 4G signal after frequency division of the downlink first combined signal to the 4G RF link, and transmit a downlink 5G signal after frequency division of the downlink first combined signal to the 5G RF link; The MCU control circuit is also used to control the 4G radio frequency link and the 5G radio frequency link to amplify the downlink 4G signal and the downlink 5G signal; The second RF combining circuit is used to receive the amplified downlink 4G signal and the amplified downlink 5G signal, generate a downlink second combined signal from the amplified downlink 4G signal and the amplified downlink 5G signal, and send the downlink second combined signal through an antenna; The second RF combining circuit is further used to receive the uplink first combined signal through the antenna, transmit the uplink 4G signal after the uplink first combined signal is divided to the 4G RF link, and transmit the uplink 5G signal after the uplink first combined signal is divided to the 5G RF link; The MCU control circuit is further used to control the 4G radio frequency link and the 5G radio frequency link to amplify the uplink 4G signal and the uplink 5G signal; The first RF combining circuit is also used to receive the amplified uplink 4G signal and the amplified uplink 5G signal, generate an uplink second combined signal from the amplified uplink 4G signal and the amplified uplink 5G signal, and send the uplink second combined signal through an antenna.

3. The repeater according to claim 2, characterized in that: The first RF combining circuit comprises: a first combiner, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor; The input end of the first combiner is connected to the second end of the second capacitor, the first output end of the first combiner is connected to the first end of the third capacitor, the first end of the fourth capacitor and the first end of the fifth capacitor, and the second output end of the first combiner is connected to the first end of the sixth capacitor and the input end of the 5G radio frequency link; A first end of the first capacitor is connected to the antenna and a first end of the second capacitor, and a second end of the first capacitor is grounded; The second end of the third capacitor, the second end of the fourth capacitor and the second end of the sixth capacitor are grounded; The second end of the fifth capacitor is connected to the input end of the 4G radio frequency link.

4. The repeater according to claim 3, characterized in that: The second radio frequency combining circuit comprises: a second combiner, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor and a fifteenth capacitor; The input end of the second combiner is connected to the first end of the twelfth capacitor and the first end of the fourteenth capacitor, the first output end of the second combiner is connected to the first ends of the eighth capacitor, the ninth capacitor and the tenth capacitor, and the second output end of the second combiner is connected to the first end of the eleventh capacitor and the output end of the 5G radio frequency link; The second end of the seventh capacitor, the second end of the ninth capacitor, the second end of the tenth capacitor and the second end of the eleventh capacitor are grounded; The second end of the eighth capacitor is connected to the first end of the seventh capacitor and the output end of the 4G radio frequency link; The second end of the twelfth capacitor is connected to the first end of the thirteenth capacitor and the antenna; The second end of the thirteenth capacitor is grounded; The second end of the fourteenth capacitor is connected to the external connector and the first end of the fifteenth capacitor; The second end of the fifteenth capacitor is grounded.

5. The repeater according to claim 1, characterized in that: The repeater includes: a Bluetooth module; The Bluetooth module is connected to the MCU control circuit via a universal synchronous / asynchronous receiver / transmitter; The MCU control circuit is further used to receive a parameter adjustment signal input through the Bluetooth module and perform parameter adjustment based on the adjustment signal; or, The repeater also includes: a 5G synchronization module; The 5G synchronization module is connected to the MCU control circuit via a universal synchronous / asynchronous receiver / transmitter; The MCU control circuit is also used to query the synchronization parameters of the 5G synchronization module and output them.

6. The repeater according to claim 1, characterized in that: The 4G radio frequency link includes: a first duplexer, a second duplexer, a 4G uplink branch and a 4G downlink branch; The first end of the first duplexer is connected to the RF combiner circuit, the second end of the first duplexer is connected to the first end of the 4G uplink branch, and the second end of the 4G uplink branch is connected to the first end of the second duplexer; The second end of the second duplexer is connected to the first end of the 4G downlink branch, the third end of the second duplexer is connected to the RF combiner circuit, and the second end of the 4G downlink branch is connected to the third end of the first duplexer.

7. The repeater according to claim 6, characterized in that: The 4G uplink branch and the 4G downlink branch each include: a first filter, a first low noise amplifier, a second filter, a first digitally controlled attenuator, a first gain module, a third filter, a second gain module, a fourth filter and a first final stage power amplifier; The first end of the first filter is connected to the second end of the first duplexer, and the second end of the first filter is connected to the first end of the first low noise amplifier; The second end of the first low noise amplifier is connected to the first end of the second filter; The second end of the second filter is connected to the first end of the first digitally controlled attenuator; The second end of the first digitally controlled attenuator is connected to the first end of the first gain module; The second end of the first gain module is connected to the first end of the third filter; The second end of the third filter is connected to the first end of the second gain module; The second end of the second gain module is connected to the first end of the fourth filter; The second end of the fourth filter is connected to the first end of the first final stage power amplifier; The second end of the first final stage power amplifier is connected to the first end of the second duplexer.

8. The repeater according to claim 1, characterized in that: The 5G radio frequency link includes: a first low insertion loss filter, a second low insertion loss filter, a first radio frequency switch, a second radio frequency switch, a 5G uplink branch, and a 5G downlink branch; A first end of the first low insertion loss filter is connected to the RF combiner circuit, a second end of the first low insertion loss filter is connected to a first end of the first RF switch, a second end of the first RF switch is connected to a first end of the 5G uplink branch, and a second end of the 5G uplink branch is connected to a first end of the second RF switch; The first end of the second low insertion loss filter is connected to the RF combining circuit, the second end of the second low insertion loss filter is connected to the third end of the second RF switch, the second end of the second RF switch is connected to the first end of the 5G downlink branch, and the second end of the 5G downlink branch is connected to the third end of the first RF switch.

9. The repeater according to claim 8, characterized in that: The 5G uplink branch and the 5G downlink branch each include: a fifth filter, a second low noise amplifier, a sixth filter, a second digitally controlled attenuator, a third gain module, a seventh filter, a fourth gain module, an eighth filter, and a second final power amplifier; The first end of the fifth filter is connected to the second end of the first RF switch, and the second end of the fifth filter is connected to the first end of the second low noise amplifier; The second end of the second low noise amplifier is connected to the first end of the sixth filter; The second end of the sixth filter is connected to the first end of the second digitally controlled attenuator; The second end of the second digitally controlled attenuator is connected to the first end of the third gain module; The second end of the third gain module is connected to the first end of the seventh filter; The second end of the seventh filter is connected to the first end of the fourth gain module; The second end of the fourth gain module is connected to the first end of the eighth filter; The second end of the eighth filter is connected to the first end of the second final stage power amplifier; The second end of the second final-stage power amplifier is connected to the first end of the second radio frequency switch.

10. A communication system, characterized in that: The communication system comprises: a donor antenna, a retransmission antenna and a repeater as claimed in any one of claims 1 to 9; The donor antenna and the retransmission antenna are both connected to the repeater.

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