CN114978272A - Multi-band digital repeater - Google Patents
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- CN114978272A CN114978272A CN202210472618.2A CN202210472618A CN114978272A CN 114978272 A CN114978272 A CN 114978272A CN 202210472618 A CN202210472618 A CN 202210472618A CN 114978272 A CN114978272 A CN 114978272A
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- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 230000002238 attenuated effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15507—Relay station based processing for cell extension or control of coverage area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention discloses a multi-band digital repeater, which at least comprises a shell, wherein at least two main boards are arranged in the shell, each main board is respectively connected with a base station facing antenna and a mobile equipment facing antenna, at least two mobile equipment facing antennas are connected with an MS antenna combiner, and at least two base station facing antennas are connected with a BTS antenna combiner; the antenna facing the base station is positioned on one side of the shell, and the antenna facing the mobile equipment is positioned on the other side of the shell; according to the embodiment of the invention, the multi-frequency band digital repeater is internally provided with the plurality of mainboards and the plurality of antennas, so that the problem of single frequency of the repeater in the prior art is solved, and multi-frequency coverage is realized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a multi-band digital repeater.
Background
The repeater station is composed of an antenna, a radio frequency duplexer, a low noise amplifier, a frequency mixer, an electrically tunable attenuator, a filter, a power amplifier and other components or modules, and comprises an uplink amplification link and a downlink amplification link.
The existing single-system common-frequency wireless micropower repeater mostly adopts a radio frequency switch to switch an uplink and a downlink, utilizes a receiving antenna to receive a downlink signal of a base station, amplifies a useful signal through a low-noise amplifier, further amplifies power through a power tube after filtering, and transmits the amplified signal to a mobile station through a transmitting antenna; at the same time, the transmitting antenna is used to receive the uplink signal of the mobile station, and the uplink signal is amplified by the low sound amplifier, the filter and the power and then is transmitted to the base station through the receiving antenna. The advantages are that: the volume is small, the installation is convenient, and the network coverage can be rapidly carried out; improving the coverage of existing networks.
However, in practical application, the single-system same-frequency wireless micropower repeater has a small coverage area and a single frequency band because only single-system equipment is covered, and when the distance between the antennas is short, the phenomenon of isolation self-excitation occurs.
Disclosure of Invention
In view of the above technical problem, an embodiment of the present invention provides a multiband digital repeater.
The embodiment of the invention provides a multi-band digital repeater, which at least comprises a shell, wherein at least two main boards are arranged in the shell, each main board is respectively connected with a base station facing antenna and a mobile equipment facing antenna, at least two mobile equipment facing antennas are connected with an MS antenna combiner, and at least two base station facing antennas are connected with a BTS antenna combiner; wherein the base station facing antenna is located on one side of the housing and the mobile device facing antenna is located on the other side of the housing;
the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the mainboard;
the main board is used for performing cancellation self-excitation processing on the first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and sending the amplified first radio-frequency signal to the BTS antenna combiner through an uplink;
the BTS antenna combiner is used for sending the amplified first radio frequency signal to a base station through a donor antenna.
Optionally, the BTS antenna combiner is further configured to receive a second radio frequency signal sent by a base station, and send the second radio frequency signal to the main board;
the main board is used for performing cancellation self-excitation processing on the second radio frequency signal to obtain a processed radio frequency signal, amplifying the processed radio frequency signal to obtain an amplified second radio frequency signal, and sending the amplified second radio frequency signal to the MS antenna combiner through a downlink;
and the MS antenna combiner is used for sending the amplified second radio frequency signal to the mobile equipment.
Optionally, the motherboard at least includes an analog-to-digital converter, a programmable device for processing the digital signal converted by the analog-to-digital converter, and a digital-to-analog converter for performing analog conversion on the digital signal processed by the programmable device.
Optionally, the MS antenna combiner and the BTS antenna combiner are triple-band combiners.
Optionally, the motherboard is a motherboard for processing 1900MHz radio frequency signals.
Optionally, the main board is a main board for processing 2300MHz radio frequency signals.
Optionally, the main board is a main board for processing a 2600MHz radio frequency signal.
Optionally, the main board is further connected to a 4G network synchronization module.
Optionally, the main board is further connected to a 5G network synchronization module.
Optionally, the first radio frequency signal and the second radio frequency signal are synchronous clock signals with the same frequency and phase, and when the first radio frequency signal and the second radio frequency signal are transmitted, a preset synchronous character is added in front of the first radio frequency signal and the second radio frequency signal.
The multi-band digital repeater provided by the embodiment of the invention at least comprises a shell, wherein at least two main boards are arranged in the shell, each main board is respectively connected with a base station facing antenna and a mobile equipment facing antenna, at least two mobile equipment facing antennas are connected with an MS antenna combiner, and at least two base station facing antennas are connected with a BTS antenna combiner; the antenna facing the base station is positioned on one side of the shell, and the antenna facing the mobile equipment is positioned on the other side of the shell; the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the mainboard; the main board is used for performing cancellation self-excitation processing on the first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and sending the amplified first radio-frequency signal to the BTS antenna combiner through an uplink; the BTS antenna combiner is used for sending the amplified first radio frequency signal to the base station through the donor antenna.
Drawings
FIG. 1 is a schematic structural diagram of a multiband digital repeater according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another multiband digital repeater according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure of still another multiband digital repeater according to an embodiment of the present invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The repeater is a wireless signal relay product, and the indexes for measuring the quality of the repeater mainly comprise the intelligent degree (such as remote monitoring and the like), the low IP3 (the regulation is less than-36 dBm), the low noise coefficient (NF), the reliability of the whole machine, good technical service and the like.
The REPEATER belongs to a kind of REPEATER (REPEATER), and is a connection device above a network physical layer. The method is suitable for interconnection of two types of networks which are identical, and the main function is to enlarge the transmission distance of the networks by retransmitting or forwarding data signals. The repeater is a physical layer device of an OSI model of a network device for regenerating and restoring signals; the repeater is the simplest and cheapest interconnection equipment for prolonging the network distance in the local area network environment, operates on the OSI physical layer, and has the function of amplifying and regenerating signals on a line. It is used to extend the length of the LAN segments and is only used to connect the same LAN segments. A repeater (RP repeater) is a device that connects network lines and is often used for bidirectional forwarding of physical signals between two network nodes.
The repeater is the simplest network interconnection device, mainly completes the function of a physical layer, is responsible for transmitting information on the physical layers of two nodes according to bits, and completes the functions of copying, adjusting and amplifying signals, so as to prolong the length of the network. Due to the loss, the power of the signal transmitted on the line will gradually attenuate, and when the attenuation reaches a certain degree, the signal will be distorted, thereby causing a receiving error. Repeaters are designed to solve this problem. It completes the connection of physical line, amplifies the attenuated signal and keeps the same with the original data. The common repeater is a mobile phone signal repeater, a mobile phone signal amplifier and the like, taking a mobile phone signal amplifier of the cellular communication as an example, the repeater is a radio transmission transfer device which plays a role in enhancing signals in the process of wireless communication transmission, and the basic function of the repeater is a radio frequency signal power enhancer. In the downlink, the signal is picked up by the donor antenna in the existing coverage area. And performing excellent isolation on signals outside the band pass through a band pass filter, amplifying the filtered signals through a power amplifier, and then transmitting the amplified signals to an area to be covered again. In the uplink path, the signals of the mobile station handset in the coverage area are processed by the uplink amplifying link and then transmitted to the corresponding base station in the same working mode, thereby achieving the signal transmission between the base station and the handset.
Please refer to fig. 1, which is a schematic structural diagram of a multiband digital repeater according to an embodiment of the present invention, the multiband digital repeater according to the embodiment of the present invention at least includes a housing, at least two main boards are disposed in the housing, each main board is respectively connected to a base station-facing antenna and a mobile device-facing antenna, at least two mobile device-facing antennas are connected to a MS antenna combiner, and at least two base station-facing antennas are connected to a BTS antenna combiner; the antenna facing the base station is positioned on one side of the shell, and the antenna facing the mobile equipment is positioned on the other side of the shell;
the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the mainboard;
the main board is used for performing cancellation self-excitation processing on the first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and sending the amplified first radio-frequency signal to the BTS antenna combiner through an uplink;
and the BTS antenna combiner is used for transmitting the amplified first radio frequency signal to the base station through the donor antenna.
Wherein the base station-facing antenna: a BTS antenna; antenna facing mobile device: an MS antenna;
each antenna can transmit and receive (both uplink and downlink);
actually, two combiners respectively have an interface that connects external antenna, this interface is the reserved interface, only need use internal antenna and need not use external antenna under most environment, only need additionally connect external antenna to use when internal antenna signal is not good, external antenna does not contain in the product, need additionally purchase (external antenna performance is stronger), external antenna part (combiner + external antenna) is only a spare equipment in this product, can increase also can cancel.
The embodiment of the present invention may include a plurality of main boards, each of which is configured to process different radio frequency signals, for example, two main boards or three main boards may be included, which may be set according to needs, and is not specifically limited in the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another multiband digital repeater provided in an embodiment of the present invention, as shown in fig. 2, the multiband digital repeater at least includes an MS antenna combiner, a first radio frequency switch, a main board, a second radio frequency switch, and a BTS antenna combiner, wherein a mobile device facing antenna is disposed between the MS antenna combiner and the first radio frequency switch, and a base station facing antenna is disposed between the BTS antenna combiner and the second radio frequency switch;
the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the first radio frequency switch;
the first radio frequency switch is used for sending a first radio frequency signal to the same-frequency cancellation self-excitation processing module through the uplink;
the mainboard comprises a same-frequency cancellation self-excitation processing module, wherein the same-frequency cancellation self-excitation processing module is used for performing cancellation self-excitation processing on a first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and transmitting the amplified first radio-frequency signal to a second radio-frequency switch through an uplink;
the second radio frequency switch is used for sending the amplified first radio frequency signal to the BTS antenna combiner;
and the BTS antenna combiner is used for transmitting the amplified first radio frequency signal to the base station through the donor antenna.
Specifically, because the single-system device in the prior art has small coverage area and single frequency band, and cannot solve the self-excitation phenomenon of the isolation between the antennas when the distance is close, based on this, the embodiment of the invention provides a multi-band digital repeater, which comprises a same-frequency cancellation self-excitation processing module, which can perform cancellation self-excitation processing on the noise in the radio frequency signal, specifically as shown in fig. 2, the embodiment of the invention provides a multi-band digital repeater, wherein the mobile device makes the first radio frequency signal pass through an uplink three-frequency combiner (5), namely an MS antenna combiner, enter a radio frequency switch (4), namely a first radio frequency switch, pass through an uplink, enter a same-frequency cancellation self-excitation processing module for cancellation self-excitation processing, perform signal amplification, enter an audio switch (2), namely a second radio frequency switch, pass through the uplink, enter a three-frequency combiner (1), namely a BTS antenna combiner, and sending the base station signal through the donor antenna.
On the basis of the above embodiments, the embodiments of the present invention can be applied not only to the uplink but also to the downlink, and specifically, the BTS antenna combiner is further configured to receive a second radio frequency signal sent by the base station, and send the second radio frequency signal to the second radio frequency switch;
the second radio frequency switch is used for sending a second radio frequency signal to the same-frequency cancellation self-excitation processing module through a downlink;
the same-frequency cancellation and self-excitation processing module is used for performing cancellation and self-excitation processing on the second radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified second radio-frequency signal, and sending the amplified second radio-frequency signal to the first radio-frequency switch through a downlink;
the first radio frequency switch is used for sending the amplified second radio frequency signal to the MS antenna combiner through a downlink;
and the MS antenna combiner is used for sending the amplified second radio frequency signal to the mobile equipment.
Specifically, the base station sends a second radio frequency signal, the second radio frequency signal enters a radio frequency switch (2) through a downlink three-frequency combiner (1), namely a BTS antenna combiner, enters a radio frequency switch (2), enters a same-frequency cancellation self-excitation processing module to perform cancellation self-excitation processing on the second radio frequency signal after passing through a downlink, enters a radio frequency switch (4) first radio frequency switch after signal amplification, enters a three-frequency combiner (5), namely an MS antenna combiner, after passing through the downlink, and is sent to a user mobile phone signal, namely mobile equipment through a covering antenna.
The common-frequency cancellation self-excitation processing module at least comprises an analog-digital converter, a programmable device for processing the digital signal converted by the analog-digital converter and a digital-analog converter for performing analog conversion on the digital signal processed by the programmable device.
Optionally, the MS antenna combiner and the BTS antenna combiner are triple-band combiners.
Specifically, the combiner: the combiner is generally used at a transmitting end, and is used for combining two or more paths of radio frequency signals transmitted from different transmitters into one path of radio frequency signals which are transmitted to a radio frequency device for antenna transmission, and simultaneously, mutual influence among signals of various ports is avoided; a combiner typically has two or more input ports and only one output port. The port isolation is an important index, which is used to describe the capability of two paths of signals without mutual influence, and is generally required to be over 20 dB.
Because the repeater in the prior art cannot meet the voice call and the internet surfing experience of 4G and 5G users at the same time, in the embodiment of the invention, the same-frequency cancellation self-excitation processing module is also connected with the 4G network synchronization module, and the same-frequency cancellation self-excitation processing module can also be connected with the 5G network synchronization module, so that the users can surf the internet through the 4G network or the 5G network.
Specifically, the network system may be a full 4G system, or may be a combined system of 4G + 5G.
Optionally, the first radio frequency signal and the second radio frequency signal are synchronous clock signals with the same frequency and phase, and when the first radio frequency signal and the second radio frequency signal are transmitted, a preset synchronous character is added in front of the first radio frequency signal and the second radio frequency signal.
Specifically, the embodiment of the invention provides a synchronization signal processing module based on a TDD-LTE ICS micropower multiband digital repeater, where the synchronization communication is a bit synchronization communication technology, and requires that a transmitting party and a receiving party have synchronous clock signals with the same frequency and phase, and only a specific synchronization character needs to be added to the forefront of a transmission message to establish synchronization between the transmitting party and the receiving party, and then the transmitting party and the receiving party transmit/receive bit by bit under the control of a synchronization clock.
As shown in FIG. 2, the multiband digital repeater provided by the embodiment of the present invention can be applied to radio frequency signals of different frequency bands, for example, the first radio frequency signal may be 1900MHz, or 2300MHz, or 2600 MHz.
The second radio frequency signal in the downlink may also be TDD-LTE1900/2300/2600 MHz.
Specifically, 3 groups of main boards of different radio frequency signals can be simultaneously arranged in the multi-band digital repeater, the main boards comprise same-frequency cancellation self-excitation processing modules, and the different same-frequency cancellation self-excitation processing modules correspond to different radio frequency switches and are then connected with the combiner.
Specifically, the TDD (time division duplex) -LTE (Long Term Evolution) 1900MHz passes through the uplink triple-frequency combiner (5), enters the radio frequency switch (4), passes through the uplink, enters the TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing, performs signal amplification, enters the frequency switch (2), passes through the uplink, enters the triple-frequency combiner (1), and passes through the donor antenna to send a base station signal.
TDD (time division duplex) -LTE (Long Term Evolution )2300MHz passes through an uplink three-frequency combiner (5), enters a radio frequency switch (8), enters a TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing after passing through an uplink, enters a three-frequency combiner (1) after passing through an uplink after signal amplification, and is sent to a base station signal through a donor antenna after entering an audio switch (6).
TDD (time division duplex) -LTE (Long Term Evolution)) 2600MHz passes through an uplink three-frequency combiner (5), enters a radio frequency switch (11), enters a TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing after passing through an uplink, enters a three-frequency combiner (1) after passing through an uplink after being subjected to signal amplification, and then enters a donor antenna to send a base station signal after entering a frequency switch (9) after passing through the uplink.
TDD-LTE1900MHz passes through a downlink three-frequency combiner (1), enters a radio frequency switch (2), enters a TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing after passing through a downlink, and enters an incident frequency switch (4) through a downlink, enters a three-frequency combiner (5) after signal amplification and is sent to a user mobile phone signal through a covering antenna.
TDD-LTE2300MHz passes through a downlink three-frequency combiner (1), enters a radio frequency switch (6), enters a TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing after passing through a downlink, and enters an input frequency switch (8) through a downlink to enter a three-frequency combiner (5) after signal amplification and then is sent to a user mobile phone signal through a covering antenna.
TDD-LTE2600MHz enters the radio frequency switch (9) through the downlink three-frequency combiner (1), enters the TDD-LTE1900MHz ICS digital same-frequency cancellation self-excitation processing module for cancellation self-excitation processing after passing through the downlink, and enters the three-frequency combiner (5) through the downlink after signal amplification to be sent to the user mobile phone signal through the covering antenna after entering the frequency switch (11).
As shown in fig. 3, in the embodiment of the present invention, the multiband digital repeater includes 3 main boards, a B39 main board, a B40 main board, and a B41 main board, which are respectively used for processing different radio frequency signals, each main board corresponds to different antennas facing a mobile station antenna and a base station, and the main board antennas of different frequency bands have different sizes and need to correspond to each other; the other 3 BTS antennas are placed on the same surface of the shell, the radiation direction of the antennas faces the outward direction, the 3 MS antennas are placed on the other surface of the shell opposite to the BTS antennas, and the radiation surfaces of the antennas also face the outward direction.
The multi-band digital repeater provided by the embodiment of the invention at least comprises a shell, wherein at least two main boards are arranged in the shell, each main board is respectively connected with a base station facing antenna and a mobile equipment facing antenna, at least two mobile equipment facing antennas are connected with an MS antenna combiner, and at least two base station facing antennas are connected with a BTS antenna combiner; the antenna facing the base station is positioned on one side of the shell, and the antenna facing the mobile equipment is positioned on the other side of the shell; the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the mainboard; the main board is used for performing cancellation self-excitation processing on the first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and sending the amplified first radio-frequency signal to the BTS antenna combiner through an uplink; the BTS antenna combiner is used for sending the amplified first radio frequency signal to the base station through the donor antenna.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A multi-band digital repeater is characterized in that: the multi-band digital repeater at least comprises a shell, wherein at least two main boards are arranged in the shell, each main board is respectively connected with a base station facing antenna and a mobile equipment facing antenna, the at least two mobile equipment facing antennas are connected with an MS antenna combiner, and the at least two base station facing antennas are connected with a BTS antenna combiner; wherein the base station facing antenna is located on one side of the housing and the mobile device facing antenna is located on the other side of the housing;
the MS antenna combiner is used for receiving a first radio frequency signal sent by the mobile equipment and sending the first radio frequency signal to the mainboard;
the main board is used for performing cancellation self-excitation processing on the first radio-frequency signal to obtain a processed radio-frequency signal, amplifying the processed radio-frequency signal to obtain an amplified first radio-frequency signal, and sending the amplified first radio-frequency signal to the BTS antenna combiner through an uplink;
the BTS antenna combiner is used for sending the amplified first radio frequency signal to a base station through a donor antenna.
2. The multiband digital repeater according to claim 1, wherein: the BTS antenna combiner is also used for receiving a second radio frequency signal sent by a base station and sending the second radio frequency signal to the mainboard;
the main board is used for performing cancellation self-excitation processing on the second radio frequency signal to obtain a processed radio frequency signal, amplifying the processed radio frequency signal to obtain an amplified second radio frequency signal, and sending the amplified second radio frequency signal to the MS antenna combiner through a downlink;
and the MS antenna combiner is used for sending the amplified second radio frequency signal to the mobile equipment.
3. The multiband digital repeater according to claim 1, wherein: the mainboard at least comprises a same-frequency cancellation self-excitation processing module which at least comprises an analog-digital converter, a programmable device for processing digital signals converted by the analog-digital converter and a digital-analog converter for performing analog conversion on the digital signals processed by the programmable device.
4. The multiband digital repeater according to claim 1, wherein: the MS antenna combiner and the BTS antenna combiner are three-frequency combiners.
5. The multiband digital repeater according to claim 1, wherein: the mainboard is a mainboard for processing 1900MHz radio frequency signals.
6. The multiband digital repeater according to claim 1, wherein: the mainboard is a mainboard for processing 2300MHz radio frequency signals.
7. The multiband digital repeater according to claim 1, wherein: the mainboard is a mainboard for processing 2600MHz radio frequency signals.
8. The multiband digital repeater according to claim 1, wherein: the mainboard is also connected with the 4G network synchronization module.
9. The multiband digital repeater according to claim 8, wherein: the mainboard is also connected with the 5G network synchronization module.
10. The multiband digital repeater according to claim 2, wherein: the first radio frequency signal and the second radio frequency signal are synchronous clock signals with the same frequency and the same phase, and when the first radio frequency signal and the second radio frequency signal are transmitted, a preset synchronous character is added in front of the first radio frequency signal and the second radio frequency signal.
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