Transceiver and base station

Abstract

Disclosed are a transceiver and a base station, relating to the technical field of wireless communication. The transceiver comprises: a transmitter, a transmission filter, a reception filter, a receiver, and a combiner. The transmitter is used to generate a first multi-band radio frequency signal and perform power amplification on the first multi-band radio frequency signal. The transmission filter is used to perform filtering on the first multi-band radio frequency signal after power amplification. The reception filter is used to perform filtering on a second multi-band radio frequency signal from an antenna. The receiver is used to perform amplification on the second multi-band radio frequency signal after filtering, and, on the basis of the amplified second multi-band radio frequency signal, obtain at least two received signals. The combiner is used to transmit the first multi-band radio frequency signal to the antenna and the second multi-band radio frequency signal to the reception filter. The transceiver has a simple structure and low costs.

Description

Transceivers and base stations

[0001] This application claims priority to Chinese patent application number 202311659045.5, filed on December 5, 2023, with invention name “Transceiver and Base Station”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a transceiver and a base station. Background Art

[0003] In wireless communication systems, transceivers are mainly used by base stations and other communication equipment to send and receive signals.

[0004] In related art, a transceiver includes a multiplexer, at least one transmitter, and at least one receiver. The multiplexer has a first port and multiple second ports. The first port of the multiplexer is connected to an antenna, and the first port of the multiplexer is connected to each of the second ports. Each second port corresponds to a frequency band and allows signals in the corresponding frequency band to pass. At least one transmitter and at least one receiver are each connected to one of the second ports of the multiplexer.

[0005] The more transmitters and receivers connected to the multiplexer, the more complex the structure of the multiplexer and the larger its size, which makes the overall structure of the transceiver highly complex, large in size and high in cost.

[0006] Summary of the Invention

[0007] The present application provides a transceiver and a base station. The transceiver has a simple structure, a small size and a low cost.

[0008] In a first aspect, the present application provides a transceiver. The transceiver includes a transmitter, a transmit filter, a receive filter, a receiver, and a combiner. The transmitter is configured to generate a first multi-band radio frequency signal based on at least two transmit signals and to power amplify the first multi-band radio frequency signal, the first multi-band radio frequency signal including at least two first single-band radio frequency signals. The transmit filter is configured to filter the power-amplified first multi-band radio frequency signal. The receive filter is configured to filter a second multi-band radio frequency signal from an antenna, the second multi-band radio frequency signal including at least two second single-band radio frequency signals. The receiver is configured to amplify the filtered second multi-band radio frequency signal and to obtain at least two receive signals based on the amplified second multi-band radio frequency signal. The combiner is connected to the transmit filter and the receive filter, respectively, and is configured to transmit the first multi-band radio frequency signal from the transmit filter to the antenna and transmit the second multi-band radio frequency signal from the antenna to the receive filter.

[0009] In an embodiment of the present application, the multiplexer in the related art is split into three parts: a transmitting filter, a receiving filter, and a combiner. For the transmitting filter, since the frequency interval between the frequency bands corresponding to at least two first single-band radio frequency signals is large and there is no frequency band for transmitting the second single-band radio frequency signal, there is no need to specially design the transmitting filter to improve the suppression between the filter channels corresponding to different frequency bands, which is conducive to reducing the structural complexity of the transmitting filter. Similarly, for the receiving filter, since the frequency interval between the frequency bands corresponding to at least two second single-band radio frequency signals is large and there is no frequency band for transmitting the first single-band radio frequency signal, there is no need to specially design the receiving filter to improve the suppression between the filter channels corresponding to different frequency bands, which is conducive to reducing the structural complexity of the receiving filter. In addition, since the filtering function is mainly implemented by the transmitting filter and the receiving filter, the combiner only needs to realize the combination of the second multi-band radio frequency signal in the receiving direction and the first multi-band radio frequency signal in the sending direction so as to be connected to the antenna, and there is no need to highly isolate the transmitting filter channel and the receiving filter channel in the combiner, thereby reducing the structural complexity of the combiner.

[0010] In summary, in the transceiver, the transmit filter, receive filter and combiner have simple structures and low implementation complexity, which is conducive to reducing the structural complexity of the transceiver, reducing the volume and reducing the cost.

[0011] In one possible implementation, the transceiver is an AAU, further comprising an antenna assembly, the antenna assembly comprising the antenna and a frame, the antenna and the combiner both being located within and connected to the frame. Because the combiner is a passive component, placing the combiner within the antenna assembly minimizes manufacturing and maintenance costs, making it easier to implement. Furthermore, the size of the transceiver assembly can be further reduced.

[0012] In another possible implementation, the transceiver is an RRU, which does not include an antenna. The transmitter, transmit filter, receive filter, receiver and combiner are all located in the transceiver housing, and the combiner is connected to an external antenna via a feeder.

[0013] Optionally, the combiner includes a receive filter channel and a transmit filter channel, and the suppression between the receive filter channel and the transmit filter channel is greater than or equal to 40 dB and less than 100 dB. The suppression between the receive filter channel and the transmit filter channel in the combiner is relatively low, and the low suppression requires relatively low structural complexity of the combiner, thereby reducing the structural complexity of the combiner and lowering costs.

[0014] In a possible implementation, the transceiver further includes a circuit board, the circuit board including a first area and a second area arranged in parallel, the transmitter and the transmit filter are both located in the first area, and the receiver and the receive filter are both located in the second area.

[0015] By arranging the transmitter and receiver in different areas of the circuit board respectively, the distance between the transmitting filter and the receiving filter can be made longer. In this way, the transmitting filter and the receiving filter can be isolated by spatial distance, which is conducive to reducing the requirements for the suppression performance of the transmitting filter and the receiving filter, and reducing the volume and weight of the transmitting filter and the receiving filter.

[0016] Optionally, the transmitting filter includes a first frequency separation module, at least two first filtering modules and a first frequency combining module, the first frequency separation module is used to divide the first multi-band RF signal after power amplification into at least two first single-band RF signals according to the frequency band, the at least two first filtering modules are used to filter the at least two first single-band RF signals respectively, and the first combining module is used to combine the at least two filtered first single-band RF signals output by the at least two first filtering modules into one to obtain a filtered first multi-band RF signal.

[0017] Optionally, the receiving filter includes a second frequency separation module, at least two second filtering modules and a second frequency combining module, the second frequency separation module is used to divide the second multi-band RF signal into at least two second single-band RF signals according to the frequency band, the at least two second filtering modules are used to filter the at least two second single-band RF signals respectively, and the second combining module is used to combine the at least two filtered second single-band RF signals output by the at least two second filtering modules into one to obtain a filtered second multi-band RF signal.

[0018] Optionally, the transmitter includes a first intermediate frequency conversion unit, a first radio frequency conversion unit and a first amplification unit connected in sequence, the first intermediate frequency conversion unit is used to convert the at least two transmission signals into at least two first intermediate frequency signals, the first radio frequency conversion unit is used to convert the at least two first intermediate frequency signals into a first multi-band radio frequency signal, and the first amplification unit is used to amplify the first multi-band radio frequency signal to obtain the power-amplified first multi-band radio frequency signal.

[0019] Optionally, the receiver includes a second amplification unit, a second RF conversion unit, and a second intermediate frequency conversion unit connected in sequence, the second amplification unit is used to amplify the filtered second multi-band RF signal, the second RF conversion unit is used to down-convert and frequency separate the amplified second multi-band RF signal to obtain at least two second intermediate frequency signals, and the second intermediate frequency conversion unit is used to convert the at least two intermediate frequency signals into at least two received signals.

[0020] Optionally, the frequency band corresponding to the first single-band radio frequency signal is selected from the following frequency bands: 1800M band, 2100M band and 2600M band, and the frequency band corresponding to the second single-band radio frequency signal is selected from the following frequency bands: 1800M band, 2100M band and 2600M band.

[0021] In a second aspect, the present application provides a base station, comprising a baseband unit (BBU) and any one of the transceivers provided in the first aspect. The BBU is connected to the transceiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a structural block diagram of a transceiver provided in an embodiment of the present application;

[0023] 2 is a schematic diagram of the frequency range of a transmission sub-band corresponding to a first multi-band radio frequency signal and a reception sub-band corresponding to a second multi-band radio frequency signal provided in an embodiment of the present application;

[0024] FIG3 is a schematic structural diagram of a transceiver provided in an embodiment of the present application;

[0025] FIG4 is a schematic structural diagram of another transceiver provided in an embodiment of the present application;

[0026] FIG5 is a schematic structural diagram of another transceiver provided in an embodiment of the present application;

[0027] FIG6 is a schematic structural diagram of another transceiver provided in an embodiment of the present application;

[0028] FIG7 is a schematic structural diagram of another transceiver provided in an embodiment of the present application;

[0029] FIG8 is a schematic diagram comparing a combiner provided in an embodiment of the present application with a multiplexer in related art;

[0030] FIG9 is a schematic diagram of a circuit structure of a transceiver provided in an embodiment of the present application.

[0031] Reference numerals

[0032] 1. Transceiver; 1a. Antenna assembly; 1b. Transceiver assembly;

[0033] 11. Transmitter;

[0034] 111. First intermediate frequency conversion unit; 112. First radio frequency conversion unit; 113. First amplification unit;

[0035] 113a, radio frequency adjustable gain amplifier; 113b, power amplifier;

[0036] 12. Receiver;

[0037] 121, second amplifying unit; 122, second radio frequency conversion unit; 123, second intermediate frequency conversion unit;

[0038] 121a, low noise amplifier; 121b, RF adjustable gain amplifier; 121c, RF filter;

[0039] 21. Transmit filter; 22. Receive filter; 23. Combiner;

[0040] 30. Housing; 31. Antenna; 32. Frame;

[0041] 33. Circuit board; 33a. First region; 33b. Second region;

[0042] 4. Jumper wire. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0044] The embodiment of the present application uses multiple discrete components to replace the multiplexer in the transceiver, thereby providing a transceiver with a simple structure, small size and low cost.

[0045] Figure 1 is a structural block diagram of a transceiver provided in an embodiment of the present application. As shown in Figure 1, the transceiver 1 includes a transmitter 11, a transmit filter 21, a receive filter 22, a receiver 12, and a combiner 23. The transmitter 11 is used to generate a first multi-band RF signal based on at least two transmit signals, and to power amplify the first multi-band RF signal, wherein the first multi-band RF signal includes at least two first single-band RF signals. The transmit filter 21 is used to filter the power-amplified first multi-band RF signal. The receive filter 22 is used to filter the second multi-band RF signal from the antenna, wherein the second multi-band RF signal includes at least two second single-band RF signals. The receiver 12 is used to amplify the filtered second multi-band RF signal, and to obtain at least two receive signals based on the amplified second multi-band RF signal. The combiner 23 is connected to the transmit filter 21 and the receive filter 22 respectively. The combiner 23 is used to send the first multi-band RF signal from the transmit filter 21 to the antenna, and send the second multi-band RF signal from the antenna to the receive filter 22 .

[0046] In an embodiment of the present application, the multiplexer in the related art is divided into three parts: a transmitting filter 21, a receiving filter 22, and a combiner 23. For the transmitting filter 21, since the frequency interval between the frequency bands corresponding to at least two first single-band radio frequency signals is large and there is no frequency band for transmitting the second single-band radio frequency signal, there is no need to specially design the transmitting filter 21 to improve the suppression between the filter channels corresponding to different frequency bands, which is beneficial to reducing the structural complexity of the transmitting filter. Similarly, for the receiving filter 22, since the frequency interval between the frequency bands corresponding to at least two second single-band radio frequency signals is large and there is no frequency band for transmitting the first single-band radio frequency signal, there is no need to specially design the receiving filter 22 to improve the suppression between the filter channels corresponding to different frequency bands, which is beneficial to reducing the structural complexity of the receiving filter 22. In addition, since the filtering function is mainly implemented by the transmitting filter 21 and the receiving filter 22, the combiner 23 only needs to realize the combination of the second multi-band RF signal in the receiving direction and the first multi-band RF signal in the sending direction, so as to be connected to the antenna. There is no need to highly isolate the transmitting filter channel and the receiving filter channel in the combiner 23, thereby reducing the structural complexity of the combiner.

[0047] In summary, in the transceiver 1 , the transmit filter 21 , the receive filter 22 and the combiner 23 have simple structures and low implementation complexity, thus helping to reduce the structural complexity of the transceiver 1 and reduce costs.

[0048] In an embodiment of the present application, the frequency band (also called frequency band) corresponding to the first single-band radio frequency signal and the second single-band radio frequency signal can be a frequency band above 1 GHz and below 3 GHz in the frequency division duplex (FDD) mode specified in the 3GPP protocol.

[0049] Optionally, the frequency band corresponding to the first single-band radio frequency signal is selected from the following frequency bands: 1800 MHz band, 2100 MHz band, and 2600 MHz band; and the frequency band corresponding to the second single-band radio frequency signal is selected from the following frequency bands: 1800 MHz band, 2100 MHz band, and 2600 MHz band. Each frequency band includes a transmit sub-band and a receive sub-band. The transmit sub-band is the frequency range in which the first single-band radio frequency signal is located; the receive sub-band is the frequency range in which the second single-band radio frequency signal is located.

[0050] For example, the first multi-band radio frequency signal includes two first single-band radio frequency signals, and the frequency bands corresponding to the two first single-band radio frequency signals are 1800M band and 2100M band respectively; the second multi-band radio frequency signal includes two second single-band radio frequency signals, and the frequency bands corresponding to the two second single-band radio frequency signals are 1800M band and 2100M band respectively.

[0051] For another example, the first multi-band radio frequency signal includes three first single-band radio frequency signals, and the frequency bands corresponding to the three first single-band radio frequency signals are 1800M band, 2100M band and 2600M band respectively; the second multi-band radio frequency signal includes three second single-band radio frequency signals, and the frequency bands corresponding to the three second single-band radio frequency signals are 1800M band, 2100M band and 2600M band respectively.

[0052] It should be noted that the embodiment of the present application does not limit the number and frequency range of frequency bands corresponding to the first multi-band RF signal, nor does it limit the number and frequency range of frequency bands corresponding to the second multi-band RF signal, and can be set according to the actual needs of the communication system.

[0053] In the following description, an example is given in which the first multi-band radio frequency signal includes two first single-band radio frequency signals and the second multi-band radio frequency signal includes two second single-band radio frequency signals.

[0054] Figure 2 is a schematic diagram of the frequency range of a transmitting sub-band corresponding to a first multi-band radio frequency signal and a receiving sub-band corresponding to a second multi-band radio frequency signal provided in an embodiment of the present application. As shown in Figure 2, the two frequency bands corresponding to the first multi-band radio frequency signal and the second multi-band radio frequency signal are both the 1800M band and the 2100M band. In the 1800M band, the frequency range of the transmitting sub-band is 1805MHz-1880MHz, and the frequency range of the receiving sub-band is 1710MHz-1785MHz. In the 2100M band, the frequency range of the transmitting sub-band is 2110MHz-2170MHz, and the frequency range of the receiving sub-band is 1920MHz-1980MHz.

[0055] As can be seen, within each frequency band, the frequency separation between the transmit and receive sub-bands is small. In two adjacent frequency bands, the frequency separation between the transmit sub-band in one band and the receive sub-band in the other may also be small. Furthermore, because in FDD mode, receive and transmit signals coexist, and the receive signal has low power while the transmit signal has high power, the transmit signal can easily interfere with the receive signal. Therefore, the filter channels corresponding to adjacent receive and transmit sub-bands in the quadplexer require high isolation, resulting in a larger, heavier, and more expensive quadplexer.

[0056] In two adjacent frequency bands, the transmission sub-band of one frequency band and the transmission sub-band of the other frequency band are relatively large in the frequency domain (at least separated by one receiving sub-band), and the power difference between the signals transmitted in the filter channels corresponding to the two transmission sub-bands is relatively small. Therefore, for the transmission filter in the embodiment of the present application, the interference between the signals transmitted in the filter channels corresponding to the adjacent transmission sub-bands in the frequency domain is relatively small, and the filter channels corresponding to the two adjacent transmission sub-bands in the frequency domain do not need to be highly isolated, which is conducive to simplifying the structure of the transmission filter and reducing the production cost.

[0057] Similarly, in two adjacent frequency bands, the receiving sub-band of one frequency band and the receiving sub-band of the other frequency band are relatively large in the frequency domain (at least separated by one transmitting sub-band), and the power difference between the signals transmitted in the filter channels corresponding to the two receiving sub-bands is relatively small. Therefore, for the receiving filter in the embodiment of the present application, the interference between the signals transmitted in the filter channels corresponding to the adjacent receiving sub-bands in the frequency domain is relatively small, and the filter channels corresponding to the two adjacent receiving sub-bands in the frequency domain do not need to be highly isolated, which is conducive to simplifying the structure of the receiving filter and reducing the production cost.

[0058] In one possible implementation, the transceiver is an active antenna unit (AAU). Figure 3 is a schematic diagram of the structure of a transceiver provided in an embodiment of the present application. As shown in Figure 3, when the transceiver is an AAU, the transceiver 1 comprises two parts: an antenna assembly 1a and a transceiver assembly 1b. In implementation, the antenna assembly 1a is a single unit, and the transceiver assembly 1b is a single unit. The antenna assembly 1a and the transceiver assembly 1b are connected to form the AAU.

[0059] FIG4 is a schematic structural diagram of a transceiver provided by an embodiment of the present disclosure, showing the detailed structures of the antenna assembly 1a and the transceiver assembly 1b in FIG3 .

[0060] Exemplarily, as shown in FIG4 , the antenna assembly 1a includes an antenna 31, a frame 32, and a combiner 23. The antenna 31 and the combiner 23 are both located in the frame 32 and connected to the frame 32. That is, in the embodiment of the present application, the combiner 23 can be integrated into the antenna assembly 1a. Since the combiner 23 is a passive device, arranging the combiner 23 in the antenna assembly 1a has little impact on the manufacturing and maintenance costs of the antenna assembly 1a. In addition, since the antenna assembly 1a is relatively large in size, and the transceiver assembly 1b is an active module and is relatively small in size, integrating the combiner 23 into the antenna assembly 1a is conducive to simplifying the structure of the active module and is easy to implement.

[0061] Optionally, the antenna 31 is a passive device and may include multiple broadband transceiver arrays, each of which is connected to two combiners. The broadband transceiver array has antenna units in two polarization directions (e.g., +45 degrees and -45 degrees), and each antenna unit in a polarization direction corresponds to a combiner. The first multi-band RF signal output by the combiner is transmitted through the antenna unit in the corresponding polarization direction, and the second multi-band RF signal received by the antenna unit in one polarization direction is output to the corresponding combiner.

[0062] The transceiver assembly 1b includes a housing 30, which encapsulates the transmitter 11, transmit filter 21, receive filter 22, and receiver 12. This housing 30 protects the internal components. The AAU is constructed by connecting the housing 30b to the enclosure 30a and electrically connecting the combiner 23 in the enclosure 30a to the transmit filter 21 and receive filter 22 in the housing 30b.

[0063] Here, the transceiver assembly 1b includes two first connection interfaces, both of which are fixed to the housing 30. One first connection interface is connected to the transmit filter 21, and the other first connection interface is connected to the receive filter 22. The antenna assembly 1a includes two second connection interfaces, both of which are fixed to the enclosure 32. Both second connection interfaces are connected to the combiner 23. Through the docking of the first and second connection interfaces, electrical connections can be achieved between the combiner 23 in the enclosure 32 and the respective transmit filters 21 and receive filters 22 in the housing 30.

[0064] Optionally, the first connection interface and the second connection interface may be blind-mate radio frequency coaxial connectors.

[0065] For example, the frame 32 may be a flat box, and the sidewalls of the housing 30 may have grooves matching the frame 32 to facilitate assembly of the frame 32 and the housing 30. The frame 32 and the housing 30 may be fixedly connected by fasteners, including but not limited to screws.

[0066] Assuming that a transmitter 11, a transmit filter 21, a receive filter 22, and a receiver 12 constitute a transceiver unit, the transceiver 1 may include one transceiver unit or multiple transceiver units. Each transceiver unit includes a receiving subunit and a transmitting subunit, each receiving subunit includes a connected receiver 12 and a receiving filter 22, and each transmitting subunit includes a connected transmitter 11 and a transmitting filter 21.

[0067] In some embodiments, as shown in FIG4 , the transceiver further includes a circuit board 33 , and each transceiver unit is disposed on the circuit board 33 . The circuit board 33 is located in the housing 30 .

[0068] In a possible implementation, as shown in FIG4 , the circuit board 33 includes a first area 33 a and a second area 33 b arranged in parallel. The transmitter 11 and the transmit filter 21 are both located in the first area 33 a , and the receiver 12 and the receive filter 22 are both located in the second area 33 b .

[0069] By arranging the transmitting filter 21 and the receiving filter 22 in different areas of the circuit board 33 respectively, the distance between the transmitting filter 21 and the receiving filter 22 can be made longer. In this way, the transmitting filter 21 and the receiving filter 22 can be isolated by spatial distance, which is beneficial to reducing the requirements for the suppression performance of the transmitting filter 21 and the receiving filter 22, and reducing the volume and weight of the transmitting filter 21 and the receiving filter 22.

[0070] When the transceiver 1 includes multiple transceiver units, all transmitters 11 and transmit filters 21 in the transceiver 1 are located in the first area 33a, and all receivers 12 and receive filters 22 are located in the second area 33b. That is, all transmit subunits are located in the first area 33a, and all receive subunits are located in the second area 33b.

[0071] In some examples, as shown in FIG4 , each transmit filter 21 in transceiver 1 is located on a side of the first region 33a away from the second region 33b, and each transmitter 11 in transceiver 1 is located on a side of the first region 33a closer to the second region 33b. Similarly, each receive filter 22 in transceiver 1 is located on a side of the second region 33b away from the first region 33a, and each receiver 12 in transceiver 1 is located on a side of the second region 33b closer to the first region 33a. This allows for a greater distance between transmit filter 21 and receive filter 22, and fully utilizes the space between transmit filter 21 and receive filter 22.

[0072] During implementation, the transmitting subunits and receiving subunits arranged in the arrangement direction of the first area 33 a and the second area 33 b can be used as one transceiver unit, and the transmitting filter 21 and the receiving filter 22 in one transceiver unit are connected to one combiner 23 .

[0073] FIG5 is a schematic diagram of the structure of another transceiver provided in an embodiment of the present application, showing the detailed structure of the antenna assembly 1a and the transceiver assembly 1b in FIG3. As shown in FIG5, when the transceiver includes multiple transceiver units, all transmitting subunits can be arranged in the first area 33a, and all receiving subunits can be arranged in the second area 33b. In addition, the transmitting filter 21 and the receiving filter 22 are arranged along the arrangement direction of the first area 33a and the second area 33a and are located on the same side of the first area 33a and the second area 33b. At the boundary between the first area 33a and the second area 33b, the spacing between adjacent transmitting filters 21 and receiving filters 22 is the smallest, and the spacing between other transmitting filters 21 and any receiving filter 22 is greater than the spacing between adjacent transmitting filters 21 and receiving filters 22. Therefore, if the interference between the signals transmitted in the transmitting filter 21 and receiving filter 22 with the smallest spacing is small and can meet the requirements of the communication system, then the interference between the signals transmitted in the other transmitting filters 21 and receiving filters 22 can also meet the requirements of the communication system. In this case, as long as the distance between adjacent transmitting filters 21 and receiving filters 22 is greater than a set value, the interference between any transmitting filter 21 and any receiving filter 22 can be reduced.

[0074] Optionally, the spacing between adjacent transmitting filters 21 and receiving filters 22 is greater than the spacing between any two adjacent transmitting filters 21 in the first area 33a, and the spacing between any two adjacent transmitting filters 21 in the first area 33a may be equal or unequal; and the spacing between adjacent transmitting filters 21 and receiving filters 22 is greater than the spacing between any two adjacent receiving filters 22 in the second area 33b, and the spacing between any two adjacent receiving filters 22 in the second area 33b may be equal or unequal.

[0075] FIG6 is a schematic diagram of the structure of another transceiver provided in an embodiment of the present application, showing the detailed structure of the antenna assembly 1a and the transceiver assembly 1b in FIG3 . As shown in FIG6 , when the transceiver includes multiple transceiver units, the multiple transmitting subunits and the multiple receiving subunits in the multiple transceiver units can be arranged alternately along the first direction. In this case, it is necessary to ensure that the spacing between the transmitting filter and the receiving filter in the same transceiver unit, as well as the spacing between adjacent transmitting filters and receiving filters in two adjacent transceiver units, are greater than the aforementioned set value to ensure that the degree of interference between adjacent transmitting filters and receiving filters meets the system requirements.

[0076] Figure 7 is a schematic diagram of the structure of another transceiver provided in an embodiment of the present application. As shown in Figure 7, in another possible implementation, the transceiver 1 is a radio remote unit (RRU). When the transceiver is an RRU, the transceiver does not include an antenna, but only includes the aforementioned transceiver assembly 1b, and a combiner (not shown) is also located in the housing of the transceiver assembly.

[0077] Exemplarily, the housing of the transceiver assembly has a connection port, such that the connection port is connected to one end of a jumper (also known as a feeder) 4, and the other end of the jumper 4 is connected to the antenna, thereby enabling the transceiver 1 to be connected to the antenna through the connection port. The connection port is a multi-core connector (also known as a cluster port), each connecting core of which connects a feeder to the output end of a combiner. For example, the connection port is a 2-core connector, a 4-core connector, or an 8-core connector.

[0078] The structures of the combiner, the receiving filter and the transmitting filter in the embodiments of the present application are described in detail below.

[0079] In an embodiment of the present application, the combiner includes a receiving filter channel and a transmitting filter channel, and the suppression degree between the receiving filter channel and the transmitting filter channel is greater than or equal to 30 dB and less than 100 dB.

[0080] In related technologies, the suppression between the receive and transmit filter channels in a multiplexer must be greater than 100dB. Compared to a multiplexer, the suppression between the receive and transmit filter channels in a combiner is lower. This lower suppression also requires less structural complexity in the combiner, thus reducing the combiner's structural complexity and costs.

[0081] FIG8 is a schematic diagram comparing the combiner provided by the embodiment of the present application and the multiplexer in the related art. As shown in part (a) of FIG8 , in the quadplexer, the overlapping portion of the adjacent receiving filter channel and the transmitting filter channel in the frequency domain is very small, and the suppression degree between the adjacent receiving filter channel and the transmitting filter channel in the frequency domain is high. For example, the right edge of the receiving filter channel corresponding to the 1800M receiving sub-band and the left edge of the transmitting filter channel corresponding to the 1800M transmitting sub-band are basically not overlapped in the frequency domain, and the right edge of the receiving filter channel corresponding to the 2100M receiving sub-band and the left edge of the transmitting filter channel corresponding to the 2100M transmitting sub-band are completely not overlapped. As shown in part (b) of FIG8 , in the combiner, the edge slopes of the receiving filter channel and the transmitting filter channel are relatively gentle, and the overlapping portion of the adjacent receiving filter channel and the transmitting filter channel in the frequency domain is large. It can be seen that the suppression degree between the adjacent receiving filter channel and the transmitting filter channel in the frequency domain is low. For example, the right edge of the receiving filter channel corresponding to the 1800M receiving sub-band and the left edge of the transmitting filter channel corresponding to the 1800M transmitting sub-band overlap in a wider range in the frequency domain, and the right edge of the receiving filter channel corresponding to the 2100M receiving sub-band and the left edge of the transmitting filter channel corresponding to the 2100M transmitting sub-band overlap in a wider range in the frequency domain.

[0082] Optionally, the suppression degree between the receive filter channel and the transmit filter channel of the combiner is greater than or equal to 30dB and less than 80dB. By further reducing the suppression degree requirement between the receive filter channel and the transmit filter channel, the structural complexity and cost of the combiner can be further reduced. Exemplarily, the suppression degree between the receive filter channel and the transmit filter channel of the combiner is greater than or equal to 40dB and less than 80dB. For example, the suppression degree between the receive filter channel and the transmit filter channel of the combiner can be 30dB, 40dB, 50dB, 60dB, or 70dB, etc.

[0083] Exemplarily, the combiner includes a first port and two second ports, wherein the first port is connected to the antenna, one second port is connected to the transmit filter, and the other second port is connected to the receive filter.

[0084] In an embodiment of the present application, the combiner has at least two receive filter channels, each of which is configured to allow a second single-band RF signal of a corresponding receive sub-band to pass through, while filtering out frequency bands outside the corresponding receive sub-band. In other words, each receive filter channel is a bandpass filter. Similarly, the combiner has at least two transmit filter channels, each of which is configured to allow a first single-band RF signal of a corresponding transmit sub-band to pass through, while filtering out frequency bands outside the corresponding transmit sub-band. In other words, each transmit filter channel is a bandpass filter.

[0085] The embodiments of the present application do not limit the specific structures of the transmit filter channel and the receive filter channel.

[0086] Optionally, the transmitting filter 21 includes a first frequency separation module, at least two first filtering modules and a first frequency combining module. The first frequency separation module has an input end and at least two output ends, and the input end of the first frequency separation module is connected to the receiver. The first frequency separation module is used to divide the first multi-band RF signal after power amplification into at least two first single-band RF signals according to the frequency band. In each transmitting filter 21, the number of first filtering modules is equal to the number of first single-band RF signals contained in the first multi-band RF signal, and the input end of each first filtering module is respectively connected to an output end of the first frequency separation module. Each first filtering module is used to filter a first single-band RF signal. That is, at least two first filtering modules are respectively used to filter at least two first single-band RF signals. The first combining module has at least two inputs and one output. The at least two inputs of the first combining module are respectively connected to the output of a first filtering module. The first combining module is configured to combine at least two filtered first single-band RF signals output by the at least two first filtering modules into one signal to generate a filtered first multi-band RF signal, and transmit the filtered first multi-band RF signal to the antenna. In implementation, each first filtering module can be implemented using a resonant cavity.

[0087] In an embodiment of the present application, the transmit filter 21 has an input port and an output port. The input port is connected to the input end of the first frequency separation module and to the transmitter, and the output port is connected to the first frequency combining module and to a second port of the combiner.

[0088] Optionally, the receive filter 22 includes a second frequency separation module, at least two second filtering modules, and a second frequency combining module. The second frequency separation module has an input and at least two outputs, and the input of the second frequency separation module is connected to the antenna. The second frequency separation module is configured to separate the second multi-band RF signal into at least two second single-band RF signals according to frequency band. In each receive filter, the number of second filtering modules is equal to the number of second single-band RF signals contained in the second multi-band RF signal, and the input of each second filtering module is respectively connected to an output of the second frequency separation module. Each second filtering module is configured to filter a second single-band RF signal. In other words, at least two second filtering modules are respectively configured to filter at least two second single-band RF signals. The second combining module has at least two inputs and one output, and the at least two inputs of the second combining module are respectively connected to the output of a second filtering module. The module is configured to combine the at least two filtered second single-band RF signals output by the at least two second filtering modules into one, generating a filtered second multi-band RF signal, and transmitting the filtered second multi-band RF signal to the receiver.

[0089] In the embodiment of the present application, the receiving filter 22 includes an input port and an output port. The input port is connected to the input end of the second frequency separation module and to a second port of the combiner. The output port is connected to the second frequency combining module and to the receiver.

[0090] The circuit structures of the transmitter and receiver in the embodiment of the present application are exemplarily described below with reference to FIG9 . As shown in FIG9 , the transmitter 11 includes a first intermediate frequency conversion unit 111, a first radio frequency conversion unit 112, and a first amplifier unit 113, which are connected in sequence. The first intermediate frequency conversion unit 111 is configured to convert at least two transmit signals into at least two first intermediate frequency signals, the first radio frequency conversion unit 112 is configured to convert at least two first intermediate frequency signals into at least one first multi-band radio frequency signal, and the first amplifier unit 113 is configured to power amplify the first multi-band radio frequency signal to obtain a power-amplified first multi-band radio frequency signal.

[0091] In this embodiment of the present application, the transmit signal is a baseband signal. The first intermediate frequency conversion unit 111 is configured to sample and frequency-convert at least two transmit signals to obtain at least two first intermediate frequency signals. The first radio frequency conversion unit 112 is configured to up-convert the at least two first intermediate frequency signals to obtain at least two first radio frequency signals. This embodiment of the present application does not limit the implementation method of the up-conversion. For example, the at least two first intermediate frequency signals can be up-converted based on a local oscillator signal.

[0092] Illustratively, the first amplification unit 113 includes a sequentially connected RF adjustable gain amplifier 113a and a power amplifier 113b. The RF adjustable gain amplifier 113a is configured to amplify or attenuate and combine at least two first RF signals to generate a first multi-band RF signal. The power amplifier 113b is configured to amplify the power of the first multi-band RF signal so that the amplified first multi-band RF signal reaches a set transmit power.

[0093] 9, the RF adjustable gain amplifiers 113a in the first amplifying units 113 of multiple transmitters 11 are integrated together to further simplify the circuit structure of the transceiver. In other embodiments, each first amplifying unit 113 may also use an independent RF adjustable gain amplifier 113a.

[0094] The receiver 12 includes a second amplifying unit 121, a second RF conversion unit 122, and a second intermediate frequency conversion unit 123, which are connected in sequence. The second amplifying unit 121 is used to amplify the filtered second multi-band RF signal, the second RF conversion unit 122 is used to down-convert and frequency-separate the amplified second multi-band RF signal to obtain at least two second intermediate frequency signals, and the second intermediate frequency conversion unit 123 is used to convert the at least two intermediate frequency signals into at least two received signals.

[0095] The second amplification unit 121 includes a low-noise amplifier 121a, an RF adjustable gain amplifier 121b, and an RF filter 121c, which are connected in sequence. The low-noise amplifier 121a is used to perform low-noise power amplification on the second multi-band RF signal from the antenna. The RF adjustable gain amplifier 121b is used to amplify or attenuate the second multi-band RF signal after low-noise power amplification. The RF filter 121c is used to filter out noise from the second multi-band RF signal. Noise refers to signals in frequency bands other than the frequency band corresponding to the second multi-band RF signal.

[0096] The second RF conversion unit 122 is configured to down-convert and frequency-separate the second multi-band RF signal output by the second amplification unit 121 to obtain at least two second intermediate frequency signals. The second intermediate frequency conversion unit 123 is configured to sample the second intermediate frequency signal to obtain a corresponding received signal. Here, the received signal is a baseband digital signal. The embodiments of the present application do not limit the implementation method of down-conversion. For example, the second multi-band RF signal can be down-converted based on a local oscillator signal.

[0097] As shown in Figure 9, the first RF conversion unit 112 in all transmitters 11 and the second RF conversion unit 122 in all receivers 12 are integrated into a single radio frequency chip. The first intermediate frequency conversion unit 111 in all transmitters 11 and the second intermediate frequency conversion unit 123 in all receivers 12 are integrated into a single intermediate frequency chip. The chip name can be set as needed and is not limited in this embodiment of the present application.

[0098] Alternatively, in other embodiments, the first intermediate frequency conversion unit in each transmitter is an independent circuit, and the second intermediate frequency conversion unit in each receiver is an independent circuit.

[0099] Alternatively, in other embodiments, the first radio frequency conversion unit in each transmitter is an independent circuit, and the second radio frequency conversion unit in each receiver is an independent circuit.

[0100] Alternatively, in other embodiments, the first intermediate frequency conversion unit and the first radio frequency conversion unit in each transmitter and the second intermediate frequency conversion unit and the second radio frequency conversion unit in each receiver may be integrated together.

[0101] The specific circuit structure of each of the aforementioned units may adopt any one of the relevant technologies as long as the corresponding functions can be achieved, and the embodiments of the present application do not impose any restrictions on this.

[0102] In the embodiments of the present application, the number of transmit channels of a transceiver is equal to the number of transmitters in the transceiver, and the number of receive channels of the transceiver is equal to the number of receivers in the transceiver. Optionally, in a transceiver, the number of transmit channels may be equal to the number of receive channels; or the number of transmit channels may not be equal to the number of receive channels. Figures 3, 4, and 5 illustrate an 8-transmit / 8-receive (8T8R) transceiver as an example. However, the embodiments of the present application do not limit the number of transmit and receive channels of a transceiver and can be set according to actual needs, such as 4T4R, 4T8R, or 8T4R.

[0103] The embodiment of the present application further provides a base station, which includes a base station unit (BBU) and any of the aforementioned transceivers, wherein the BBU is connected to the transceiver and is configured to generate a transmit signal, receive a receive signal sent by the transceiver, and process the receive signal.

[0104] Optionally, the BBU and the transceiver may be connected via any communication medium, such as an optical fiber connection or a cable connection.

[0105] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meaning understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the patent application specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. The multiple involved in the embodiments of this application refers to two or more. A and / or B means that there are three situations: A; B; and A and B.

[0106] The above is only an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A transceiver, characterized in that: The transceiver includes: a transmitter, a transmission filter, a reception filter, a receiver and a combiner. The transmitter is used to generate a first multi-band radio frequency signal based on at least two transmission signals, and to power amplify the first multi-band radio frequency signal, wherein the first multi-band radio frequency signal includes at least two first single-band radio frequency signals; The transmit filter is used to filter the first multi-band radio frequency signal after power amplification; The receiving filter is used to filter the second multi-band radio frequency signal from the antenna, wherein the second multi-band radio frequency signal includes at least two second single-band radio frequency signals; The receiver is used to amplify the filtered second multi-band radio frequency signal, and obtain at least two receiving signals based on the amplified second multi-band radio frequency signal; The combiner is connected to the transmit filter and the receive filter respectively, and is used to send the first multi-band radio frequency signal from the transmit filter to the antenna, and send the second multi-band radio frequency signal from the antenna to the receive filter.

2. The transceiver according to claim 1, characterized in that: The transceiver further comprises an antenna assembly, wherein the antenna assembly comprises the antenna and a frame, wherein the antenna and the combiner are both located in the frame and connected to the frame.

3. The transceiver according to claim 1 or 2, characterized in that: The combiner includes a receiving filter channel and a transmitting filter channel, and the suppression degree between the receiving filter channel and the transmitting filter channel is greater than or equal to 30 dB and less than 100 dB.

4. The transceiver according to any one of claims 1 to 3, characterized in that: The transceiver further includes a circuit board, which includes a first area and a second area arranged in parallel, wherein the transmitter and the transmit filter are both located in the first area, and the receiver and the receive filter are both located in the second area.

5. The transceiver according to any one of claims 1 to 4, characterized in that: The transmitting filter includes a first frequency separation module, at least two first filtering modules and a first frequency combining module, wherein the first frequency separation module is used to divide the first multi-band radio frequency signal after power amplification into at least two first single-band radio frequency signals according to frequency bands, the at least two first filtering modules are used to filter the at least two first single-band radio frequency signals respectively, and the first combining module is used to combine the at least two filtered first single-band radio frequency signals output by the at least two first filtering modules into one, so as to obtain a filtered first multi-band radio frequency signal.

6. The transceiver according to any one of claims 1 to 5, characterized in that: The receiving filter includes a second frequency separation module, at least two second filtering modules and a second frequency combining module, the second frequency separation module is used to divide the second multi-band radio frequency signal into at least two second single-band radio frequency signals according to the frequency band, the at least two second filtering modules are used to filter the at least two second single-band radio frequency signals respectively, and the second combining module is used to combine the at least two filtered second single-band radio frequency signals output by the at least two second filtering modules into one, so as to obtain a filtered second multi-band radio frequency signal.

7. The transceiver according to any one of claims 1 to 6, characterized in that: The transmitter includes a first intermediate frequency conversion unit, a first radio frequency conversion unit and a first amplification unit connected in sequence, the first intermediate frequency conversion unit is used to convert the at least two transmission signals into at least two first intermediate frequency signals, the first radio frequency conversion unit is used to convert the at least two first intermediate frequency signals into a first multi-band radio frequency signal, and the first amplification unit is used to amplify the first multi-band radio frequency signal to obtain the first multi-band radio frequency signal after power amplification.

8. The transceiver according to any one of claims 1 to 7, characterized in that: The receiver includes a second amplifying unit, a second RF conversion unit and a second intermediate frequency conversion unit connected in sequence, the second amplifying unit is used to amplify the second multi-band RF signal after filtering, the second RF conversion unit is used to down-convert and frequency separate the amplified second multi-band RF signal to obtain at least two second intermediate frequency signals, and the second intermediate frequency conversion unit is used to convert the at least two intermediate frequency signals into at least two received signals.

9. The transceiver according to any one of claims 1 to 8, characterized in that: The frequency band corresponding to the first single-band RF signal is selected from the following frequency bands: 1800M band, 2100M band and 2600M band, and the frequency band corresponding to the second single-band RF signal is selected from the following frequency bands: 1800M band, 2100M band and 2600M band.

10. A base station, characterized in that: The base station comprises a baseband unit and the transceiver according to any one of claims 1 to 9, and the baseband unit is connected to the transceiver.

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