WO2024002015A1 - 微波分合路器 - Google Patents

微波分合路器 Download PDF

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Publication number
WO2024002015A1
WO2024002015A1 PCT/CN2023/102447 CN2023102447W WO2024002015A1 WO 2024002015 A1 WO2024002015 A1 WO 2024002015A1 CN 2023102447 W CN2023102447 W CN 2023102447W WO 2024002015 A1 WO2024002015 A1 WO 2024002015A1
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WO
WIPO (PCT)
Prior art keywords
signal
microwave
circulator
filter
splitter
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PCT/CN2023/102447
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English (en)
French (fr)
Inventor
张震
韦兆碧
张勇
王靖
孟博
郑军胜
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2024002015A1 publication Critical patent/WO2024002015A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • H01P1/38—Circulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular, to a microwave splitter and combiner.
  • the common transceiver terminal of traditional microwave splitters and combiners directly uses a circulator with a coaxial interface to realize the common antenna port and signal transceiver separation.
  • Passive intermodulation interference is prone to occur when multiple carriers are combined.
  • traditional microwave splitting and combining can achieve multi-carrier splitting and combining, it cannot solve the problem of passive intermodulation interference during the multi-carrier splitting and combining process. .
  • How to reduce the passive intermodulation interference of microwave splitters and combiners has become an urgent technical problem to be solved.
  • the present disclosure provides a microwave splitter and combiner to solve the technical problem of passive intermodulation interference of traditional microwave splitter and combiner.
  • the present disclosure provides a microwave splitter and combiner.
  • the microwave splitter and combiner includes: a duplexer, a signal combiner composed of N circulators in cascade, and a signal combiner composed of M circulators in cascade.
  • Signal splitter, N+1 first filters and M+1 second filters, N and M are both positive integers greater than or equal to 1; among them, each first filter is connected with the signal combiner connection, the signal combiner is used to combine the N+1 transmitted microwave signals corresponding to the N+1 first filters; each second filter is connected to the signal splitter, and the signal splitter is used to combine the M
  • the M+1 received microwave signals corresponding to the +1 second filters are split; the signal combiner and the signal splitter are both connected to the duplexer, and the duplexer is used to separate the signals transmitted from the signal combiner to the antenna.
  • the transmit microwave signal and the received microwave signal from the antenna to the signal splitter are subjected to out-of-band suppression to reduce passive intermodulation interference in the microwave splitter and combiner.
  • the duplexer includes a signal transmitting interface, a signal receiving interface and an antenna interface; wherein, the signal transmitting interface is used to connect the signal combiner and the duplexer, and the signal receiving interface is used to split the signal.
  • the duplexer is connected to the duplexer, and the antenna interface is used to connect the duplexer to the antenna.
  • the antenna interface is a waveguide interface.
  • the duplexer includes a signal transmitting channel and a signal receiving channel.
  • the signal transmitting channel is used to transmit the combined transmitting microwave signal
  • the signal receiving channel is used to receive the to-be-split received microwave signal.
  • the signal transmitting channel is located between the signal transmitting interface and the antenna interface
  • the signal receiving channel is located between the signal receiving interface and the antenna interface; both the signal transmitting channel and the signal receiving channel have out-of-band suppression.
  • the duplexer includes a transmitting end filter, a receiving end filter and a first circulator; wherein the signal transmitting channel is formed by the transmitting end filter and the first circulator, and the signal receiving channel is formed by The first circulator and receiving end filter are formed.
  • the first circulator includes a first port, a second port and a third port; wherein, the input port of the transmitting end filter is connected to the signal combiner as a signal transmitting interface, and the input port of the transmitting end filter is connected to the signal combiner.
  • the output port is connected to the first port; the input port of the receiving end filter is connected to the second port; the output port of the receiving end filter is connected to the signal splitter as a signal receiving interface; and the third port is connected to the antenna as an antenna interface.
  • the output port, the first port of the transmitting end filter, the input port, the second port and the third port of the receiving end filter are all waveguide interfaces.
  • the frequency range of the bandwidth of the transmitting end filter includes the frequency range corresponding to the bandwidth of all the N+1 first filters
  • the frequency range of the bandwidth of the receiving end filter includes M +1 The frequency range corresponding to the bandwidth of all second filters in the second filter.
  • the out-of-band suppression of the transmitter filter is greater than a first preset threshold
  • the out-of-band suppression of the receiver filter is greater than a second preset threshold
  • the first preset threshold is greater than the second preset threshold. threshold.
  • the signal combiner includes a second circulator, a third circulator and a fourth circulator that are cascaded in sequence
  • the signal splitter includes a fifth circulator and a sixth circulator that are cascaded in sequence.
  • the seventh circulator the number of the first filter and the second filter is four, different first filters correspond to different frequency ranges of bandwidths, and different second filters correspond to different frequency ranges of bandwidths;
  • the number of the second circulator, the third circulator and the fourth circulator connected to the first filter is one, one and two respectively;
  • the fifth circulator, the sixth circulator and the seventh circulator are connected to the second filter
  • the number of devices are one, one and two respectively.
  • different first filters are used to filter transmitted microwave signals of different outdoor units
  • different second filters are used to filter received microwave signals of different outdoor units
  • the outdoor units are used to Transmit and receive microwave signals.
  • FIG. 1 is a schematic structural diagram of a microwave splitter and combiner provided by an embodiment of the present disclosure
  • Figure 2 is a schematic structural diagram of a duplexer provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of the frequency range of the bandwidth of a transmitter filter and a receiver filter provided by an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of a passive intermodulation generation location provided by an embodiment of the present disclosure
  • Figure 5 is a schematic diagram before and after filtering out intermodulation interference signals provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another microwave splitter and combiner provided by an embodiment of the present disclosure.
  • the common transceiver terminal of traditional microwave splitters and combiners directly uses a circulator with a coaxial interface to realize the common antenna port and signal transceiver separation. Since passive intermodulation interference is likely to occur when multiple carriers are combined, factors such as the use of nonlinear materials, component connections, and contact surface assembly will all lead to the generation of passive intermodulation interference. Instead of using traditional microwave splitters and combiners Although multi-carrier splitting and combining can be achieved, it cannot solve the problem of passive intermodulation interference during the multi-carrier splitting and combining process, which affects the use range of its frequency subbands. Therefore, how to reduce the passive intermodulation interference of the microwave splitter and combiner so that the sub-band selection is not restricted has become an urgent technical problem to be solved.
  • FIG. 1 is a schematic structural diagram of a microwave splitter and combiner provided by an embodiment of the present disclosure.
  • the microwave demultiplexer includes: a duplexer 110, a signal combiner 120 composed of N circulators in cascade, a signal splitter 130 composed of M circulators in cascade, N +1 first filters 140 and M+1 second filters 150, N and M are both positive integers greater than or equal to 1; wherein, each first filter 140 is connected to the signal combiner 120, The signal combiner 120 is used to combine the N+1 transmitted microwave signals corresponding to the N+1 first filters 140; each second filter 150 is connected to the signal splitter 130, and the signal splitter 130 is used to split the M+1 received microwave signals corresponding to the M+1 second filters 150; the signal combiner 120 and the signal splitter 130 are both connected to the duplexer 110, and the duplexer 110 uses Out-band suppression is performed on the transmitted microwave signal transmitted from the signal combiner 120 to the antenna and the received microwave signal received from the antenna to the signal splitter 130 to reduce
  • the number N of circulators in the signal combiner 120 and the number M of circulators in the signal splitter 130 are both positive integers greater than or equal to 1.
  • N and M may be equal to each other, or they may Not equal, it can be set according to actual needs.
  • the above-mentioned duplexer 110 can be an integrated structure or a separated structure. Regardless of whether the duplexer 110 is an integrated structure or a separated structure, it has a signal transmitting channel and a signal receiving channel to realize signal transmitting and receiving. Duplex mode.
  • the first filter 140 and the second filter 150 may be band-pass filters. When the first filter 140 and the second filter 150 are band-pass filters, only signals in a frequency range corresponding to a specific bandwidth are allowed to pass. . In an exemplary embodiment, the frequency ranges corresponding to the bandwidths of the first filter 140 and the second filter 150 are different.
  • the microwave demultiplexer in this disclosure uses a duplexer 110 to realize a common antenna port and signal transceiver separation. separation. Since the duplexer 110 can perform out-of-band suppression on the transmitted microwave signal transmitted from the signal combiner 120 to the antenna and the received microwave signal received from the antenna to the signal splitter 130, the microwave splitter and combiner can effectively reduce the The passive intermodulation interference in the signal makes the sub-band selection unrestricted.
  • the microwave splitter and combiner can be used to transmit and receive the inter-frequency signals of multiple ODUs through one antenna to realize the microwave splitting and combining function of the microwave splitter and combiner.
  • the duplexer 110 includes a signal transmitting interface A, a signal receiving interface B and an antenna interface C; wherein the signal transmitting interface A is used to connect the signal combiner 120 to the duplexer 110, and the signal receiving interface A is used to connect the signal combiner 120 to the duplexer 110.
  • Interface B is used to transfer signals
  • the splitter 130 is connected to the duplexer 110, and the antenna interface C is used to connect the duplexer 110 to the antenna.
  • the duplexer 110 can receive the transmitted microwave signal transmitted by the signal combiner 120 through the signal transmitting interface A, and then transmit the received transmitted microwave signal to the antenna through the antenna interface C; at the same time, the duplexer 110 can transmit the received microwave signal to the antenna through the antenna interface C.
  • Interface C receives the received microwave signal received by the antenna, and then transmits the received received microwave signal to the signal splitter 130 through the signal receiving interface B, so that the duplexer 110 can realize the signal transmitting and signal receiving functions at the same time.
  • the antenna interface C is a waveguide interface.
  • the diplexer 110 using a waveguide interface as the antenna interface C can effectively avoid passive intermodulation products generated by discontinuous interfaces compared to the traditional circulator with a coaxial interface. Because the traditional coaxial interface requires a converter from the coaxial interface to the waveguide interface to be connected between the coaxial interface and the antenna before it can be connected to the antenna normally, this will cause nonlinearity between different types of interfaces to produce passive interactions. adjust interference.
  • the duplexer 110 includes a signal transmitting channel and a signal receiving channel. The signal transmitting channel is used for transmitting the combined transmitting microwave signal, and the signal receiving channel is used for transmitting the combined received microwave signal. For reception, the signal transmitting channel is located between the signal transmitting interface A and the antenna interface C, and the signal receiving channel is located between the signal receiving interface B and the antenna interface C; both the signal transmitting channel and the signal receiving channel have out-of-band suppression.
  • both the signal transmitting channel and the signal receiving channel have out-of-band suppression, such as using a band-pass filter to filter the signals in their channels, not only the signal transmitting channel and the signal receiving channel can be filtered through the duplexer 110
  • the passive intermodulation interference of the signal receiving channel is suppressed to avoid affecting its frequency sub-band usage range, so that the sub-band selection is not restricted; it can also completely suppress the passive intermodulation interference generated by the signal combiner 120 and the signal splitter 130.
  • Source intermodulation interference does not affect the decoding performance of the local system.
  • the duplexer 110 includes a transmitter filter 1101, a receive filter 1102 and a first circulator 1103; wherein the signal transmission channel is composed of the transmitter filter 1101 and the first circulator 1103.
  • the circulator 1103 is formed, and the signal receiving channel is formed by the first circulator 1103 and the receiving end filter 1102.
  • the duplexer 110 may be a split duplexer 110, and the split duplexer 110 may be composed of a transmitter filter 1101, a receiver filter 1102 and a first circulator 1103. In this way, out-of-band suppression of the signal transmitting channel and the signal receiving channel can be achieved through the transmitting end filter 1101 and the receiving end filter 1102.
  • the first circulator 1103 includes a first port, a second port and a third port; wherein, the input port of the transmitting end filter 1101 is connected to the signal combiner 120 as the signal transmitting interface A.
  • the output port of the end filter 1101 is connected to the first port; the input port of the receiving end filter 1102 is connected to the second port.
  • the output port of 1102 serves as the signal receiving interface B and is connected to the signal splitter 130; the third port serves as the antenna interface C and is connected to the antenna.
  • the transmitted microwave signal received from the input port of the transmitter filter 1101 can be transmitted from the output port of the transmitter filter 1101 to the first port of the first circulator 1103, and then through the third port of the first circulator 1103 Transmit to the antenna; at the same time, receive the microwave signal from the antenna from the third port of the first circulator 1103, and transmit it to the input port of the receiving end filter 1102 through the second port of the first circulator 1103, and then from the receiving end
  • the output port of the filter 1102 is transmitted to the signal splitter 130, so that the duplexer 110 can realize signal transmitting and signal receiving functions at the same time.
  • the output port, the first port of the transmitting end filter 1101, the input port, the second port and the third port of the receiving end filter 1102 are all waveguide interfaces. In this way, intermodulation signals caused by nonlinearity between different types of interfaces can be avoided.
  • the frequency range of the bandwidth of the transmitting end filter 1101 includes the frequency range corresponding to the bandwidth of all the first filters 140 in the N+1 first filters 140, and the bandwidth of the receiving end filter 1102 is The frequency range includes frequency ranges corresponding to the bandwidths of all the second filters 150 in the M+1 second filters 150 .
  • the transmitter filter 1101 and the receiver filter 1102 are both band-pass filters.
  • the bandwidth of the band-pass filter is the bandwidth of the working signal.
  • the transmit and receive frequencies meet the frequency planning interval, so the duplexer 110
  • the transmitting and receiving bandwidths respectively need to cover the frequency range corresponding to the bandwidth of all the first filters 140 in the N+1 first filters 140 and the frequency corresponding to the bandwidth of all the second filters 150 in the M+1 second filters 150. scope.
  • the frequency ranges corresponding to the bandwidths of the four first filters 140 are represented by T1, T2, T3 and T4 respectively
  • the frequency ranges of the second filter 150 are represented by T1, T2, T3 and T4 respectively.
  • the number is 4, and the frequency ranges corresponding to the bandwidths of the four second filters 150 are represented by R1, R2, R3 and R4 respectively. Then, at this time, the frequency range of the bandwidth of the transmitter filter 1101 of the duplexer 110 needs to be covered. From the starting end of T1 to the ending end of T4, the frequency range of the bandwidth of the receiving end filter 1102 of the duplexer 110 needs to cover the starting end of R1 to the ending end of R4.
  • the out-of-band suppression of the transmitter filter 1101 is greater than the first preset threshold
  • the out-of-band suppression of the receive filter 1102 is greater than the second preset threshold
  • the first preset threshold is greater than the second preset threshold. Preset threshold.
  • the above-mentioned first preset threshold and the above-mentioned second preset threshold can be set according to actual needs, and are not specifically limited in this embodiment.
  • PIM passive intermodulation
  • the duplexer 110 in this disclosure is installed at the common port of the microwave splitter and combiner.
  • the out-of-band suppression of the transmitter end of the duplexer 110 can be determined according to the measured maximum value of PIM (i.e., the first preset threshold). It is designed so that it can effectively filter out the total intermodulation interference signal generated by the inter-frequency signal at the front end.
  • PIM i.e., the first preset threshold
  • the schematic diagram before and after filtering out the intermodulation interference signal is shown in Figure 5. It can be seen that the out-of-band suppression at the transmit end of the duplexer 110 is greater than the first preset threshold (63.9dBc in the figure). After the out-of-band suppression by the duplexer 110, the PIM is effectively reduced.
  • the out-of-band suppression index of the receiving end of the duplexer 110 it is only necessary to consider the separation of the transmit and receive signals.
  • the out-of-band suppression degree of the receiving end filter 1102 is designed to be greater than the second preset threshold, such as 20dBc.
  • the signal combiner 120 includes a second circulator 1201 , a third circulator 1202 , and a fourth circulator 1203 cascaded in sequence
  • the signal splitter 130 includes a cascaded second circulator 1201 , a third circulator 1202 , and a fourth circulator 1203
  • different second filters 150 correspond to different bandwidths and frequency ranges; wherein, the number of second circulator 1201, third circulator 1202 and fourth circulator 1203 connected to the first filter 140 is one, one and two respectively.
  • the numbers of the fifth circulator 1301, the sixth circulator 1302 and the seventh circulator 1303 connected to the second filter 150 are one, one and two respectively.
  • the microwave demultiplexer can support combining four transmitting microwave signals and demultiplexing four receiving microwave signals.
  • the working principle of this microwave splitter and combiner is as follows: the transmitted microwave signal F4 from the transmitting end ODU4# is sent to the circulator at ODU3# (that is, the fourth circulator 1203) through the bandpass filter (i.e., the first filter 140). Since F4 The transmitted microwave signal is outside the band of the ODU3# bandpass filter (i.e., the first filter 140) and exhibits total reflection. Therefore, the F4 transmitted microwave signal is sent to the circulator at ODU2# (the third circulator 1202) through the circulator. and band-pass filter (i.e., the first filter 140).
  • F4 finally transmits the microwave signal through the circulator (the second circulator 1201) at ODU1# and the band-pass filter (i.e., the first filter 140) is transmitted to the duplexer 110, and then emitted from the antenna connected outside the duplexer 110.
  • the circulator the second circulator 1201
  • the band-pass filter i.e., the first filter 140
  • the microwave signals emitted by F3, F2, and F1 at the transmitting end follow the same transmission principle and will not be repeated here; for the receiving end, take the receiving microwave signal f4 of ODU4# as an example, which is received through the antenna interface C of the duplexer 110 , entering the channel on the receiving side, first passes through the circulator at ODU1# (i.e., the fifth circulator 1301) and enters the bandpass filter at ODU1# (i.e., the second filter 150).
  • f4 receives the microwave signal and continues to transmit it, and follows the same transmission principle after passing through the circulator at ODU2# (i.e., the sixth circulator 1302) and the circulator at ODU3# (i.e., the seventh circulator 1303) in sequence, and finally The bandpass filter entering ODU4# (i.e. the second filter 150) is passed by ODU4# receive processing.
  • the reception of microwave signals by f3, f2, and f1 at the receiving end follows the same transmission principle, which will not be described again here.
  • the microwave demultiplexer can support combining any number of transmitting microwave signals greater than 1 and demultiplexing received microwave signals, such as 2, 3, 5, 6, etc. According to the difference in the number of channels for transmitting microwave signals and receiving microwave signals, the number of circulators, first filters 140 and second filters 150 can be set appropriately.
  • different first filters 140 are used to filter transmitting microwave signals of different outdoor units
  • different second filters 150 are used to receive different outdoor units.
  • the microwave signals are filtered and the outdoor unit is used to transmit and receive microwave signals.
  • the transmitted microwave signals F4, F3, F2 and F1 are transmitted microwave signals of different frequencies, and the first filters 140 of different bandwidths need to be used for out-of-band suppression.
  • the received microwave signals f4, f3, f2 and f1 are To receive microwave signals of different frequencies, it is necessary to use the second filter 150 with different bandwidths for out-of-band suppression, thereby ensuring the combining of transmitting microwave signals and the splitting function of receiving microwave signals of multiple outdoor units.
  • the microwave splitter and combiner in this disclosure can be applied to microwave ODU low-frequency, long-distance and large-capacity transmission scenarios in the field of microwave ODU passive antenna feed.
  • 4 ODUs need to be configured to increase the transmission bandwidth.
  • F1/F2/F3/F4 are transmitted through one antenna, that is, when multiple high-power ODUs achieve multi-carrier transmission, this splitter and combiner device can be used to combine the 4 ODUs.
  • Inter-frequency signals are transmitted through one antenna, and because of the use of this patented solution, PIM has been filtered out and will not have a decoding impact on local reception.
  • multiple microwave splitters and combiners can be used to achieve this.
  • the microwave splitter and combiner in the present disclosure has the following beneficial effects: the transmitting and receiving public end of the microwave splitter and combiner in the present disclosure proposes to use a duplexer 110 with a waveguide interface to replace the coaxial interface used by the traditional microwave splitter and combiner.
  • the circulator can effectively avoid passive intermodulation products generated by interface discontinuity; the duplexer 110 proposed in this disclosure has out-of-band suppression performance and can completely suppress the signals generated by the previous stages of the signal combiner 120 and the signal splitter 130 Passive intermodulation interference will not affect the decoding performance of the local system; the duplexer 110 proposed in this disclosure has wide bandwidth, small insertion loss, easy implementation of suppression indicators, and is easy to install. Compared with the original circulator solution, it is more resistant to vibration Stronger sex.
  • the duplexer 110 proposed in this disclosure can effectively filter out the PIM interference signal generated before.
  • the total intermodulation of the microwave splitter and combiner depends on the intermodulation value of the waveguide interface of the duplexer 110, because the intermodulation generated here
  • the tuner will directly enter the RX link without any suppression and interfere with the reception.
  • the total intermodulation value of OCU needs to meet: ⁇ -134dBc (33dBm*2), so the intermodulation index requirement of the 110 antenna port of the duplexer is: ⁇ -134dBc (33dBm*2), 33dBm is a single high power
  • the transmit power of the ODU is a standard waveguide interface, and the connection with the antenna is a direct waveguide-to-waveguide connection, so the overall PIM index is easy to achieve.
  • the microwave demultiplexer includes: a duplexer, a signal combiner composed of N circulators in cascade, a signal splitter composed of M circulators in cascade, N+1
  • the first filter and M+1 second filters, N and M are both positive integers greater than or equal to 1; among them, each first filter is connected to a signal combiner, and the signal combiner is used to combine N
  • each second filter is connected to a signal splitter, and the signal splitter is used to combine the N+1 transmitted microwave signals corresponding to the M+1 second filters.
  • Channel M+1 receives microwave signals and splits them; the signal combiner and signal splitter are both connected to the duplexer, and the duplexer is used to transmit microwave signals from the signal combiner to the antenna and receive signals from the antenna
  • the splitter receives microwave signals for out-of-band suppression to reduce passive intermodulation interference in the microwave splitter and combiner. In this way, multiple transmitting microwave signals can be combined through the signal splitter, and multiple receiving microwave signals can be split through the signal splitter, thereby realizing the microwave dividing and combining function of the microwave dividing and combining device.
  • the duplexer can perform out-of-band suppression on the transmitted microwave signal transmitted from the signal combiner to the antenna and the received microwave signal received from the antenna to the signal splitter, it can effectively reduce the microwave signal in the microwave splitter and combiner.
  • Passive intermodulation interference makes sub-band selection unrestricted.

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Abstract

本公开涉及一种微波分合路器，包括：双工器(110)、由N个环形器级联构成的信号合路器(120)、由M个环形器级联构成的信号分路器(130)、N+1个第一滤波器(140)和M+1个第二滤波器(150)；其中，每个第一滤波器(140)均与信号合路器(120)连接，信号合路器(120)用于对N+1个第一滤波器(140)对应的N+1路发射微波信号进行合路；每个第二滤波器(150)均与信号分路器(130)连接，信号分路器(130)用于对M+1个第二滤波器(150)对应的M+1路接收微波信号进行分路；信号合路器(120)和信号分路器(130)均与双工器(110)连接，双工器(110)用于对从信号合路器(120)发射至天线的发射微波信号和从天线接收至信号分路器(130)的接收微波信号进行带外抑制。

Description

微波分合路器
相关申请的交叉引用
本公开要求享有2022年06月27日提交的名称为“微波分合路器”的中国专利申请CN202210744618.3的优先权，其全部内容通过引用并入本公开中。
技术领域
本公开涉及无线通讯技术领域，尤其涉及一种微波分合路器。
背景技术
目前，传统的微波分合路器的收发共用端是直接使用同轴接口的环形器来实现共天线口和信号收发分离的。在多载波合路情况下容易产生无源互调干扰，采用传统的微波分合路器虽然可以实现多载波分合路，但却无法解决多载波分合路过程中的无源互调干扰问题。如何降低微波分合路器的无源互调干扰成为亟待解决的技术问题。
发明内容
本公开提供了一种微波分合路器，以解决传统的微波分合路器的无源互调干扰的技术问题。
第一方面，本公开提供了一种微波分合路器，微波分合路器包括：双工器、由N个环形器级联构成的信号合路器、由M个环形器级联构成的信号分路器、N+1个第一滤波器和M+1个第二滤波器，N和M均为大于或等于1的正整数；其中，每个第一滤波器均与信号合路器连接，信号合路器用于对N+1个第一滤波器对应的N+1路发射微波信号进行合路；每个第二滤波器均与信号分路器连接，信号分路器用于对M+1个第二滤波器对应的M+1路接收微波信号进行分路；信号合路器和信号分路器均与双工器连接，双工器用于对从信号合路器发射至天线的发射微波信号和从天线接收至信号分路器的接收微波信号进行带外抑制，以降低微波分合路器中的无源互调干扰。
在一示例性实施例中，双工器包括信号发射接口、信号接收接口和天线接口；其中，信号发射接口用于将信号合路器与双工器连接，信号接收接口用于将信号分路器与双工器连接，天线接口用于将双工器与天线连接。
在一示例性实施例中，天线接口为波导接口。
在一示例性实施例中，双工器包括信号发射通道和信号接收通道，信号发射通道用于对合路后的发射微波信号进行发射，信号接收通道用于对待分路的接收微波信号进行接收，信号发射通道位于信号发射接口与天线接口之间，信号接收通道位于信号接收接口与天线接口之间；信号发射通道和信号接收通道均具有带外抑制作用。
在一示例性实施例中，双工器包括发射端滤波器、接收端滤波器和第一环形器；其中，信号发射通道是由发射端滤波器和第一环形器形成，信号接收通道是由第一环形器和接收端滤波器形成。
在一示例性实施例中，第一环形器包括第一端口、第二端口和第三端口；其中，发射端滤波器的输入端口作为信号发射接口与信号合路器连接，发射端滤波器的输出端口与第一端口连接；接收端滤波器的输入端口与第二端口连接，接收端滤波器的输出端口作为信号接收接口与信号分路器连接；第三端口作为天线接口与天线连接。
在一示例性实施例中，发射端滤波器的输出端口、第一端口、接收端滤波器的输入端口、第二端口和第三端口均为波导接口。
在一示例性实施例中，发射端滤波器的带宽的频率范围包括N+1个第一滤波器中所有第一滤波器的带宽对应的频率范围，接收端滤波器的带宽的频率范围包括M+1个第二滤波器中所有第二滤波器的带宽对应的频率范围。
在一示例性实施例中，发射端滤波器的带外抑制度大于第一预设阈值，接收端滤波器的带外抑制度大于第二预设阈值，第一预设阈值大于第二预设阈值。
在一示例性实施例中，信号合路器包括依次级联的第二环形器、第三环形器和第四环形器，信号分路器包括依次级联的第五环形器、第六环形器和第七环形器；第一滤波器和第二滤波器的数量均为四个，不同的第一滤波器对应的带宽的频率范围不同，不同的第二滤波器对应的带宽的频率范围不同；其中，第二环形器、第三环形器和第四环形器连接第一滤波器的数量分别为一个、一个和二个；第五环形器、第六环形器和第七环形器连接第二滤波器的数量分别为一个、一个和二个。
在一示例性实施例中，不同的第一滤波器用于对不同的室外单元的发射微波信号进行滤波，不同的第二滤波器用于对不同的室外单元的接收微波信号进行滤波，室外单元用于发射和接收微波信号。
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此处的附图被并入说明书中并构成本公开的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的一种微波分合路器的结构示意图；
图2为本公开实施例提供的一种双工器的结构示意图；
图3为本公开实施例提供的一种发射端滤波器和接收端滤波器的带宽的频率范围的示意图；
图4为本公开实施例提供的一种无源互调产生位置示意图；
图5为本公开实施例提供的一种滤除互调干扰信号前后的示意图；以及
图6为本公开实施例提供的另一种微波分合路器的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
目前，传统的微波分合路器的收发共用端是直接使用同轴接口的环形器来实现共天线口和信号收发分离的。由于在多载波合路情况下容易产生无源互调干扰，如非线性材料的使用、元器件连接、接触面装配等因素都会导致无源互调干扰的产生。而采用传统的微波分合路器 虽然可以实现多载波分合路，但却无法解决多载波分合路过程中的无源互调干扰问题，导致影响其频率子带的使用范围。因此，如何降低该微波分合路器的无源互调干扰，使得子带选择不受限制，成为亟待解决的技术问题。
参见图1，图1为本公开实施例提供的一种微波分合路器的结构示意图。如图1所示，该微波分合路器包括：双工器110、由N个环形器级联构成的信号合路器120、由M个环形器级联构成的信号分路器130、N+1个第一滤波器140和M+1个第二滤波器150，N和M均为大于或等于1的正整数；其中，每个第一滤波器140均与信号合路器120连接，信号合路器120用于对N+1个第一滤波器140对应的N+1路发射微波信号进行合路；每个第二滤波器150均与信号分路器130连接，信号分路器130用于对M+1个第二滤波器150对应的M+1路接收微波信号进行分路；信号合路器120和信号分路器130均与双工器110连接，双工器110用于对从信号合路器120发射至天线的发射微波信号和从天线接收至信号分路器130的接收微波信号进行带外抑制，以降低微波分合路器中的无源互调干扰。
在一示例性实施例中，上述信号合路器120中的环形器数量N和信号分路器130中的环形器数量M均为大于或等于1的正整数，N与M可以相等，也可以不相等，具体可以根据实际需要进行设置。上述双工器110可以是一体式结构，也可以是分离式结构，无论该双工器110是一体式结构还是分离式结构，其均具有信号发射通道和信号接收通道，以实现信号发射和接收双工模式。上述第一滤波器140和上述第二滤波器150可以为带通滤波器，在第一滤波器140和第二滤波器150为带通滤波器时，只允许特定带宽对应的频率范围的信号通过。在一示例性实施例中，各第一滤波器140和第二滤波器150的带宽对应的频率范围不同。
相较于传统的微波分合路器采用同轴接口的环形器来实现共天线口和信号收发分离，本公开中的微波分合路器是采用双工器110来实现共天线口和信号收发分离。由于采用双工器110可以对从信号合路器120发射至天线的发射微波信号和从天线接收至信号分路器130的接收微波信号进行带外抑制，因而可以有效降低该微波分合路器中的无源互调干扰，使得子带选择不受限制。并且，由于通过信号分路器130可以对N+1路发射微波信号进行合路，通过信号分路器130对M+1路接收微波信号进行分路，因而在多台高发功室外单元(Outdoor Unit，简称为ODU)实现多载波传输时，可以通过该微波分合路器将多台ODU的异频信号通过一面天线进行发射和接收，以实现该微波分合路器的微波分合路功能。
在一示例性实施例中，双工器110包括信号发射接口A、信号接收接口B和天线接口C；其中，信号发射接口A用于将信号合路器120与双工器110连接，信号接收接口B用于将信号 分路器130与双工器110连接，天线接口C用于将双工器110与天线连接。
这样，双工器110就可以通过信号发射接口A接收信号合路器120发射的发射微波信号，再通过天线接口C将接收的发射微波信号发射至天线；同时，双工器110就可以通过天线接口C接收天线接收到的接收微波信号，再通过信号接收接口B将接收的接收微波信号发射至信号分路器130，从而使得双工器110可以同时实现信号发射和信号接收功能。
在一示例性实施例中，天线接口C为波导接口。
在本实施例中，采用天线接口C为波导接口的双工器110，相较于传统方式的同轴接口的环形器，可以有效避免接口不连续产生的无源互调产物。因为传统方式的同轴接口，需要在同轴接口与天线之间连接同轴接口转波导接口的转换器后才可以正常与天线连接，这样会使得不同类型接口之间的非线性产生无源互调干扰。在一示例性实施例中，双工器110包括信号发射通道和信号接收通道，信号发射通道用于对合路后的发射微波信号进行发射，信号接收通道用于对待分路的接收微波信号进行接收，信号发射通道位于信号发射接口A与天线接口C之间，信号接收通道位于信号接收接口B与天线接口C之间；信号发射通道和信号接收通道均具有带外抑制作用。
在一实施例中，由于信号发射通道和信号接收通道均具有带外抑制作用，如使用带通滤波器对其通道内的信号进行滤波，这样，不仅可以通过双工器110对信号发射通道和信号接收通道的无源互调干扰进行抑制，避免影响其频率子带使用范围，使得子带选择不受限制；还可以完全抑制信号合路器120和信号分路器130前面各级产生的无源互调干扰，不对本端系统解码性能产生影响。
在一示例性实施例中，参见图2，双工器110包括发射端滤波器1101、接收端滤波器1102和第一环形器1103；其中，信号发射通道是由发射端滤波器1101和第一环形器1103形成，信号接收通道是由第一环形器1103和接收端滤波器1102形成。
在一实施例中，该双工器110可以为分离式双工器110，该分离式双工器110可以采用发射端滤波器1101、接收端滤波器1102加第一环形器1103组成。这样，可以通过发射端滤波器1101和接收端滤波器1102，来实现信号发射通道和信号接收通道的带外抑制作用。
在一示例性实施例中，第一环形器1103包括第一端口、第二端口和第三端口；其中，发射端滤波器1101的输入端口作为信号发射接口A与信号合路器120连接，发射端滤波器1101的输出端口与第一端口连接；接收端滤波器1102的输入端口与第二端口连接，接收端滤波器 1102的输出端口作为信号接收接口B与信号分路器130连接；第三端口作为天线接口C与天线连接。
这样，从发射端滤波器1101的输入端口接收的发射微波信号，可以从发射端滤波器1101的输出端口传输至第一环形器1103的第一端口，再通过第一环形器1103的第三端口发射至天线；同时，从第一环形器1103的第三端口接收来自天线的接收微波信号，并通过第一环形器1103的第二端口传输至接收端滤波器1102的输入端口，再从接收端滤波器1102的输出端口传输至信号分路器130，从而使得双工器110可以同时实现信号发射和信号接收功能。
在一示例性实施例中，发射端滤波器1101的输出端口、第一端口、接收端滤波器1102的输入端口、第二端口和第三端口均为波导接口。这样，可以避免不同类型接口间的非线性产生的互调信号。
在一示例性实施例中，发射端滤波器1101的带宽的频率范围包括N+1个第一滤波器140中所有第一滤波器140的带宽对应的频率范围，接收端滤波器1102的带宽的频率范围包括M+1个第二滤波器150中所有第二滤波器150的带宽对应的频率范围。
在一实施例中，发射端滤波器1101和接收端滤波器1102均为带通滤波器，带通滤波器的带宽即为工作信号的带宽宽度，收发频率满足频率规划间隔，所以双工器110的收发带宽分别需要覆盖N+1个第一滤波器140中所有第一滤波器140的带宽对应的频率范围和M+1个第二滤波器150中所有第二滤波器150的带宽对应的频率范围。例如，如图3所示，假设第一滤波器140的数量为4个，4个第一滤波器140的带宽对应的频率范围分别用T1、T2、T3和T4表示，第二滤波器150的数量为4个，4个第二滤波器150的带宽对应的频率范围分别用R1、R2、R3和R4表示，那么，此时双工器110的发射端滤波器1101的带宽的频率范围需要覆盖T1起始端至T4终止端，双工器110的接收端滤波器1102的带宽的频率范围需要覆盖R1起始端至R4终止端。
在一示例性实施例中，发射端滤波器1101的带外抑制度大于第一预设阈值，接收端滤波器1102的带外抑制度大于第二预设阈值，第一预设阈值大于第二预设阈值。
在一示例性实施例中，上述第一预设阈值和上述第二预设阈值可以根据实际需要进行设置，本实施例不做具体限定。
在该微波分合路器中异频合路时，具备无源互调(Passive Inter Modulation，PIM)产生的多个因素，如非线性材料、元器件连接、接触面、装配等。以两个载频T1/T2为例，无源互 调产生位置示意图如图4所示，其中，PIM3＝2*T2-1*T1，也就是说，无源互调会对其他频率的载频信号造成干扰。当配置4路载频时，无源互调更为严重。
本公开中的双工器110安装于微波分合路器的公共口，在使用前可以对双工器110的发射端的带外抑制度按照PIM的实测最大值(即第一预设阈值)进行设计，使其能可以有效的滤除异频信号在前端产生的总的互调干扰信号，滤除互调干扰信号前后的示意图如图5所示。由此可见，双工器110的发射端的带外抑制度大于第一预设阈值(图中为63.9dBc)，经过双工器110进行带外抑制后，PIM得到有效降低。而对于双工器110的接收端的带外抑制指标仅需要考虑收发信号分离即可，通常设计接收端滤波器1102的带外抑制度大于第二预设阈值，如20dBc。
在一示例性实施例中，参见图6，信号合路器120包括依次级联的第二环形器1201、第三环形器1202和第四环形器1203，信号分路器130包括依次级联的第五环形器1301、第六环形器1302和第七环形器1303；第一滤波器140和第二滤波器150的数量均为四个，不同的第一滤波器140对应的带宽的频率范围不同，不同的第二滤波器150对应的带宽的频率范围不同；其中，第二环形器1201、第三环形器1202和第四环形器1203连接第一滤波器140的数量分别为一个、一个和二个；第五环形器1301、第六环形器1302和第七环形器1303连接第二滤波器150的数量分别为一个、一个和二个。
在一实施例中，该微波分合路器可以支持对4路发射微波信号进行合路，且对4路接收微波信号进行分路。该微波分合路器工作原理为：发射端ODU4#的发射微波信号F4经带通滤波器(即第一滤波器140)送至ODU3#处环形器(即第四环形器1203)，由于F4发射微波信号处于ODU3#带通滤波器(即第一滤波器140)的带外，表现为全反射，故F4发射微波信号经环形器送至ODU2#处的环形器(第三环形器1202)和带通滤波器(即第一滤波器140)，以同样的信号流原理，最终F4发射微波信号经ODU1#处的环形器(第二环形器1201)和带通滤波器(即第一滤波器140)被传输到双工器110，进而从双工器110外连接的天线发射出去。对于发射端的F3、F2、F1发射微波信号遵循同样的传输原理，在此不再赘述；对于接收端，以ODU4#的接收微波信号f4为例，其经双工器110的天线接口C接收进来，进入接收一侧的通道，首先经ODU1#处的环形器(即第五环形器1301)进入ODU1#处的带通滤波器(即第二滤波器150)，因其处于带外所以发生全反射，f4接收微波信号继续传输，且遵循同样的传输原理在依次途经ODU2#处的环形器(即第六环形器1302)、ODU3#处的环形器(即第七环形器1303)后，最终进入ODU4#处的带通滤波器(即第二滤波器150)被ODU4# 接收处理。对于接收端的f3、f2、f1接收微波信号遵循同样的传输原理，在此不再赘述。
当然，作为其他实施方式，微波分合路器可以支持对大于1的任意路数的发射微波信号进行合路和接收微波信号进行分路，如2、3、5、6等等。根据发射微波信号和接收微波信号的路数的不同，合理设置环形器、第一滤波器140和第二滤波器150的数量即可。
在一示例性实施例中，继续参见图6，不同的第一滤波器140用于对不同的室外单元的发射微波信号进行滤波，不同的第二滤波器150用于对不同的室外单元的接收微波信号进行滤波，室外单元用于发射和接收微波信号。
在一实施例中，发射微波信号F4、F3、F2和F1为不同频率的发射微波信号，需要使用不同带宽的第一滤波器140进行带外抑制，接收微波信号f4、f3、f2和f1为不同频率的接收微波信号，需要使用不同带宽的第二滤波器150进行带外抑制，从而保证多个室外单元的发射微波信号的合路和接收微波信号的分路功能。
本公开中的微波分合路器可以适用于微波ODU无源天馈领域的微波ODU低频远距离大容量传输场景。在外场需要配置4个ODU来提升传输带宽，如F1/F2/F3/F4通过一面天线传输，即多台高发功ODU实现多载波传输时，可以使用此分合路器设备将4台ODU的异频信号通过一面天线传输，且因为此专利方案的使用，PIM已经被滤除，不会对本端接收产生解码影响。更进一步，在外场需要更大容量传输时，可以使用多个微波分合路器来实现。
本公开中的微波分合路器具有如下有益效果：本公开中的微波分合路器的收发公共端提出使用波导接口的双工器110，来替代传统微波分合路器采用的同轴接口的环形器，可以有效避免接口不连续产生的无源互调产物；本公开提出的双工器110具有带外抑制性能，可以完全抑制信号合路器120和信号分路器130前面各级产生的无源互调干扰，不对本端系统解码性能产生影响；本公开提出的双工器110，带宽宽、插损小、抑制指标实现容易，且易于安装，较之原来的环形器方案抗振动性更强。
本公开提出的双工器110可以将其之前产生的PIM干扰信号有效滤除，这样，微波分合路器的总互调取决于双工器110波导接口的互调值，因为这里产生的互调将不经任何抑制直接进入RX链路，对收信进行干扰。根据设计分析OCU总互调值需要满足：<-134dBc(33dBm*2)，所以双工器110天线口的互调指标要求即为：<-134dBc(33dBm*2)，33dBm即为单个高功率ODU的发射功率。设计上因该处接口为标准波导形式接口，其与天线连接为波导对波导的直连，所以总体PIM指标容易实现。
在本公开实施例中，微波分合路器包括：双工器、由N个环形器级联构成的信号合路器、由M个环形器级联构成的信号分路器、N+1个第一滤波器和M+1个第二滤波器，N和M均为大于或等于1的正整数；其中，每个第一滤波器均与信号合路器连接，信号合路器用于对N+1个第一滤波器对应的N+1路发射微波信号进行合路；每个第二滤波器均与信号分路器连接，信号分路器用于对M+1个第二滤波器对应的M+1路接收微波信号进行分路；信号合路器和信号分路器均与双工器连接，双工器用于对从信号合路器发射至天线的发射微波信号和从天线接收至信号分路器的接收微波信号进行带外抑制，以降低微波分合路器中的无源互调干扰。这样，可以通过信号分路器对多路发射微波信号进行合路，还可以通过信号分路器对多路接收微波信号进行分路，以此实现该微波分合路器的微波分合路功能，并且由于双工器可以对从信号合路器发射至天线的发射微波信号和从天线接收至信号分路器的接收微波信号进行带外抑制，因而可以有效降低该微波分合路器中的无源互调干扰，使得子带选择不受限制。
需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本公开的具体实施方式，使本领域技术人员能够理解或实现本公开。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所示的这些实施例，而是要符合与本文所申请的原理和新颖特点相一致的最宽的范围。

Claims (11)

  1. 一种微波分合路器，包括：双工器、由N个环形器级联构成的信号合路器、由M个环形器级联构成的信号分路器、N+1个第一滤波器和M+1个第二滤波器，N和M均为大于或等于1的正整数；
    其中，每个所述第一滤波器均与所述信号合路器连接，所述信号合路器用于对所述N+1个第一滤波器对应的N+1路发射微波信号进行合路；
    每个所述第二滤波器均与所述信号分路器连接，所述信号分路器用于对所述M+1个第二滤波器对应的M+1路接收微波信号进行分路；
    所述信号合路器和所述信号分路器均与所述双工器连接，所述双工器用于对从所述信号合路器发射至天线的发射微波信号和从所述天线接收至所述信号分路器的接收微波信号进行带外抑制，以降低所述微波分合路器中的无源互调干扰。
  2. 根据权利要求1所述的微波分合路器，其中，所述双工器包括信号发射接口、信号接收接口和天线接口；
    其中，所述信号发射接口用于将所述信号合路器与所述双工器连接，所述信号接收接口用于将所述信号分路器与所述双工器连接，所述天线接口用于将所述双工器与所述天线连接。
  3. 根据权利要求2所述的微波分合路器，其中，所述天线接口为波导接口。
  4. 根据权利要求2所述的微波分合路器，其中，所述双工器包括信号发射通道和信号接收通道，所述信号发射通道用于对合路后的发射微波信号进行发射，所述信号接收通道用于对待分路的接收微波信号进行接收，所述信号发射通道位于所述信号发射接口与所述天线接口之间，所述信号接收通道位于所述信号接收接口与所述天线接口之间；
    所述信号发射通道和所述信号接收通道均具有带外抑制作用。
  5. 根据权利要求4所述的微波分合路器，其中，所述双工器包括发射端滤波器、接收端滤波器和第一环形器；
    其中，所述信号发射通道是由所述发射端滤波器和所述第一环形器形成，所述信号接收通道是由所述第一环形器和所述接收端滤波器形成。
  6. 根据权利要求5所述的微波分合路器，其中，所述第一环形器包括第一端口、第二端口和第三端口；
    其中，所述发射端滤波器的输入端口作为所述信号发射接口与所述信号合路器连接，所述发射端滤波器的输出端口与所述第一端口连接；
    所述接收端滤波器的输入端口与所述第二端口连接，所述接收端滤波器的输出端口作为所述信号接收接口与所述信号分路器连接；
    所述第三端口作为所述天线接口与所述天线连接。
  7. 根据权利要求6所述的微波分合路器，其中，所述发射端滤波器的输出端口、所述第一端口、所述接收端滤波器的输入端口、所述第二端口和所述第三端口均为波导接口。
  8. 根据权利要求5所述的微波分合路器，其中，所述发射端滤波器的带宽的频率范围包括所述N+1个第一滤波器中所有第一滤波器的带宽对应的频率范围，所述接收端滤波器的带宽的频率范围包括所述M+1个第二滤波器中所有第二滤波器的带宽对应的频率范围。
  9. 根据权利要求5所述的微波分合路器，其中，所述发射端滤波器的带外抑制度大于第一预设阈值，所述接收端滤波器的带外抑制度大于第二预设阈值，所述第一预设阈值大于所述第二预设阈值。
  10. 根据权利要求1所述的微波分合路器，其中，所述信号合路器包括依次级联的第二环形器、第三环形器和第四环形器，所述信号分路器包括依次级联的第五环形器、第六环形器和第七环形器；所述第一滤波器和所述第二滤波器的数量均为四个，不同的所述第一滤波器对应的带宽的频率范围不同，不同的所述第二滤波器对应的带宽的频率范围不同；
    其中，所述第二环形器、所述第三环形器和所述第四环形器连接所述第一滤波器的数量分别为一个、一个和二个；
    所述第五环形器、所述第六环形器和所述第七环形器连接所述第二滤波器的数量分别为一个、一个和二个。
  11. 根据权利要求10所述的微波分合路器，其中，不同的所述第一滤波器用于对不同的室外单元的发射微波信号进行滤波，不同的所述第二滤波器用于对不同的室外单元的接收微波信号进行滤波，所述室外单元用于发射和接收微波信号。
PCT/CN2023/102447 2022-06-27 2023-06-26 微波分合路器 WO2024002015A1 (zh)

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