WO2015184947A1

WO2015184947A1 - Device and method for implementing combination and splitting of carrier frequency signals

Info

Publication number: WO2015184947A1
Application number: PCT/CN2015/078889
Authority: WO
Inventors: 曹云峰; 张震; 赵增民; 郑军胜
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-19
Filing date: 2015-05-13
Publication date: 2015-12-10
Also published as: CN105680901A; CN105680901B; MY188131A

Abstract

Disclosed are a device and method for implementing combination and splitting of carrier frequency signals. The method comprises: at least two first band-pass filters respectively implement band-pass filtering on at least two carrier frequency sending signals; an annular combiner/splitter combines the at least two carrier frequency sending signals after band-pass filtering by the first band-pass filters, and sends the combined signals to a signal converter; the annular combiner/splitter sends the signals converted by the signal converter to at least two second band-pass filters; and the second band-pass filters implement band-pass filtering on the signals converted by the signal converter to obtain at least two carrier frequency receiving signals, wherein the annular combiner/splitter is formed by cascading of at least three circulators, the frequency bands of the first band-pass filters comprise frequency bands of service signals in the corresponding carrier frequency sending signals, and the frequency bands of the second band-pass filters comprise frequency bands of service signals in the corresponding carrier frequency receiving signals.

Description

Device and method for realizing carrier frequency signal combining and distributing

Technical field

This paper relates to signal combining and distribution techniques, and more particularly to an apparatus and method for realizing the allocation of carrier frequency signals.

Background technique

In the field of frequency division communication, it is often necessary to transmit two or two to transmit a frequency signal in a communication channel such as a microwave channel. The carrier frequency signal is composed of a carrier frequency signal and a carrier frequency signal. The carrier frequency signal is mainly composed of a modulated service signal obtained by modulating a service signal on the transmitting side to a carrier frequency. The frequency band in which the carrier frequency signals includes the frequency band in which the service is signaled and the guard band used in the frequency band isolation. The carrier frequency signal is sent to the carrier frequency sent by the communication peer. The frequency band of the carrier frequency signal includes a frequency band of the carrier frequency signal and the carrier frequency signal.

1 is a device for realizing dual-carrier frequency signal combining and distributing in microwave communication in the related art. In FIG. 1, f1 and f1 are respectively a carrier frequency signal and a carrier frequency signal in a carrier frequency signal f1, and so on. , can know the meaning of f2 and f2. From the transmission direction and the reception direction of the device shown in FIG. 1, respectively, f1 and f2 are sent through respective corresponding duplexers, and then combined by the combiner/distributor, and finally the combined signal is sent by the antenna. Going out; the signal from the antenna including f1 and f2 is distributed by the combiner/distributor into two signals including f1 and f2, respectively, and then through the duplexer to obtain f1 and f2.

In microwave communication, the two carrier frequency combiner/distributor that realizes the combining/distributing of two carrier frequency signals can be a balanced 3dB combiner and an unbalanced 6dB combiner. For a balanced 3dB combiner, one of the two shunt ports has an insertion loss of approximately 3.8 dB and a reverse insertion loss of 3.8 dB. For an unbalanced 6dB combiner, the insertion loss of one shunt port to the shunt port is approximately 7 dB, the insertion loss of the other shunt port to the shunt port is approximately 2 dB, and the reverse insertion loss is also 7 dB and 2 dB, respectively. . It is not difficult to see that the two carrier frequency combiner/distributor introduces a large insertion loss when realizing the combination/distribution of two carrier frequency signals.

The general communication model in communication can always be attributed to the most basic point-to-point communication. Point to point For example, wireless communication, transmission distance and transmission capacity mainly depend on the system gain of the product. The system gain is the difference between the transmit power of one of the two ends of the communication and the receive sensitivity of the other end. The greater the system gain, the greater the transmission distance and transmission capacity of point-to-point communication, which means that the communication capability is stronger.

Taking the communication system of the dual carrier frequency signal combining/distributing in the related art microwave communication as shown in FIG. 2 as an example, if the balanced 3dB combiner is used at both ends of the communication, the insertion loss introduced by the balanced 3dB combiner makes The system gain of the communication system shown in Figure 2 is reduced by approximately 7.8 dB. In this communication system, if both ends of the communication use an unbalanced 6dB combiner, the system gain is reduced by about 8 dB accordingly. It is not difficult to see that in the communication system of two carrier frequency signals combined/distributed, the related technology realizes the combining/distributing mode through the combined/distributor, which reduces the system gain of the communication system, thereby reducing the communication of the communication system. Ability to reduce transmission distance and transmission capacity. Obviously, in two communication systems that combine/distribute the uplink frequency signals, the related art realizes the combining/distributing mode by means of the combining/distributor to further reduce the communication capability of the communication system.

Summary of the invention

The embodiment of the invention provides an apparatus and a method for realizing the allocation of carrier frequency signals, which can reduce the influence of the combining or distribution of two or two uplink frequency signals on the communication capability, thereby ensuring better communication. The transmission distance and transmission capacity of the system.

The embodiment of the invention discloses a device for realizing the distribution of carrier frequency signals, the device is arranged to be connected with a signal converter, and the device comprises a circular combined distributor composed of three or more circulators cascaded. Two or more first band pass filters, and two or more second band pass filters, the first band pass filter and the second band pass filter being both Combined distributor connection; where:

The first band pass filter is configured to perform band pass filtering processing on two or two channels for uploading frequency-transmitted signals, wherein the carrier frequency signal is in one-to-one correspondence with the first band-pass filter;

The ring-shaped combiner is configured to combine two or two channels that have been band-pass filtered by the first band-pass filter to perform uplink processing, and send the combined signal to the signal. The signal converter, the signal converted by the signal converter is sent to the second band pass filter;

The second band pass filter is configured to bandpass the converted signal of the signal converter Filtering, obtaining two or two ways to upload a frequency receiving signal, the carrier frequency receiving signal and the second band pass filter are in one-to-one correspondence;

The frequency band of the first band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the frequency band of the second band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal.

Optionally, wherein the annular combiner distributor comprises a first circulator, a second circulator and a third circulator, the first port, the second port and the third port of the first circulator being respectively disposed The signal converter, the second circulator and the third circulator are connected; the port annular sequence of the first circulator is a first port, a third port, a second port, and the second circulator and the first band pass a filter connection, the third circulator being coupled to the second band pass filter, wherein:

a carrier frequency signal processed by the first band pass filter band pass filter is an input of the second circulator, and the second circulator performs a combined signal of the carrier frequency signal as the An input of a second port of the first circulator, the first port of the first circulator outputs a signal to the signal converter;

The converted signal of the signal converter is an input signal of the first port of the first circulator, and the third port of the first circulator outputs a signal to the third circulator, and the output of the third circulator is outputted The second band pass filter is processed to receive the carrier frequency signal.

Optionally, the second circulator consists of a three-port circulator or is cascaded by more than one three-port circulator.

Optionally, the third circulator consists of a three-port circulator or is cascaded by more than one three-port circulator.

Optionally, a center frequency point of a frequency band of the first band pass filter is equal to a center frequency point of a frequency band of a service signal in a corresponding carrier frequency signal, and a center frequency point of a frequency band of the second band pass filter It is equal to the center frequency of the frequency band of the service signal in the corresponding carrier frequency receiving signal.

Optionally, the 3dB frequency band of the first band pass filter includes a 3dB frequency band of a service signal in a corresponding carrier frequency signal, and the 3dB frequency band of the second band pass filter includes a corresponding carrier frequency receiving signal. The 3dB band of the traffic signal.

Optionally, the frequency band of the first circulator includes the frequency of the carrier frequency signal and the carrier frequency signal The frequency band of the second circulator includes a frequency band of the carrier frequency signal, and the frequency band of the third circulator includes a frequency band of the carrier frequency receiving signal.

The embodiment of the invention further provides a method for realizing the allocation of carrier frequency signals, comprising:

Two or more first band-pass filters respectively perform band-pass filtering processing on two or two channels for uploading frequency-transmitted signals, and the carrier-frequency signal is in one-to-one correspondence with the first band-pass filter;

The loop combiner splits the two channels or two paths that have been band-pass filtered by the first band pass filter respectively to perform the combined processing of the upload frequency signal, and sends the combined signal to the signal converter;

The loop combiner distributes the converted signal of the signal converter to two or more second band pass filters;

The second band pass filter performs band pass filtering processing on the converted signal of the signal converter to obtain two or two channels for uploading a frequency receiving signal, and the carrier frequency receiving signal and the second band pass filtering One-to-one correspondence;

Wherein the ring-shaped combiner is composed of three or more circulators; the frequency band of the first band-pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the second The band of the bandpass filter includes the frequency band of the traffic signal in the corresponding carrier frequency received signal.

Optionally, the annular combiner distributor includes a first circulator, a second circulator, and a third circulator;

The ring-shaped combiner splits the two channels or two channels that have been band-pass filtered by the first band-pass filter respectively to perform combined processing by uploading a frequency-sending signal, including:

The second circulator combines the carrier frequency signal processed by the first band pass filter band pass filter to the second port of the first circulator; the first circulator combines the combined signal from the first circulator The first port is sent to the signal converter;

The ring-shaped combiner distributes the converted signal of the signal converter to two or more second band-pass filters, including:

The first circulator receives the signal converted by the signal converter from the first port, and transmits the converted signal to the third port of the first circulator; the third port of the first circulator outputs the Converting the signal to the third circulator; the third circulator will receive the converted signal Sent to two or more second band pass filters respectively;

The port sequence of the first circulator is a first port, a third port, and a second port.

Optionally, the 3dB frequency band of the first band pass filter includes a 3dB frequency band of a service signal in a corresponding carrier frequency signal, and the 3dB frequency band of the second band pass filter includes a corresponding carrier frequency receiving signal. 3dB band of the traffic signal;

The frequency band of the signal converter includes a frequency band of the carrier frequency signal and the carrier frequency signal;

The frequency band of the first circulator includes a frequency band of the carrier frequency signal and the carrier frequency receiving signal, the frequency band of the second circulator includes a frequency band of the carrier frequency signal, and the frequency band of the third circulator includes The frequency band of the carrier frequency receiving signal.

According to the technical solution of the embodiment of the present invention, since the sum of the insertion loss introduced by the circulator and the band pass filter is small, in the communication system implemented according to the technical solution of the embodiment of the present invention, two or two are greatly reduced. The effect of the combination or allocation of the uplink frequency signal on the communication capability ensures the transmission distance and transmission capacity of the communication system.

BRIEF abstract

1 is a device for realizing dual-carrier frequency signal combining and distributing in microwave communication of related art;

2 is a communication system for realizing dual-carrier frequency signal combining and distributing in microwave communication of related art;

FIG. 3 is a schematic structural diagram of a device for implementing a carrier frequency signal combining and distributing according to an embodiment of the present invention; FIG.

FIG. 4 is a schematic structural diagram of an apparatus for implementing carrier frequency signal combining and distributing according to an embodiment of the present invention; Figure

FIG. 5 is a schematic structural diagram of another component of an apparatus for implementing carrier frequency signal combining and splitting according to an embodiment of the present invention; FIG.

FIG. 6 is a flowchart of a method for implementing carrier frequency signal combining and splitting according to an embodiment of the present invention.

Embodiments of the invention

It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

FIG. 3 is a schematic structural diagram of a device for realizing the distribution of a carrier frequency signal according to an embodiment of the present invention. As shown in FIG. 3, the device is configured to be connected to a signal converter, and the device includes three or more circulator stages. a combined loop combiner, two or more first band pass filters, and two or more second band pass filters, the first band pass filter and the second band a pass filter is connected to the annular combiner, wherein

The second band pass filter is configured to perform band pass filtering processing on the converted signal of the signal converter to obtain two or two channels to upload a frequency receiving signal, and the carrier frequency receiving signal and the second signal One-to-one correspondence between bandpass filters;

The frequency band of the first band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the frequency band of the second band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal. In this way, the filtering effect of the band pass filter is guaranteed.

Wherein, the signal converter can be an antenna.

Wherein the annular combiner includes a first circulator, a second circulator and a third circulator, wherein the first port, the second port and the third port of the first circulator are respectively disposed with the signal converter The second circulator is connected to the third circulator; the port of the first circulator is in the form of a first port, a third port, and a second port, and the second circulator is connected to the first band pass filter. The third circulator is connected to the second band pass filter;

It should be noted that the ring sequence of the port of the first circulator ensures that, for the signal on the second port, the circular path from the second port to the first port is the shortest in the first circulator; The signal is the shortest path in the first circulator from the first port to the third port.

a first band pass filter corresponding to the carrier frequency signal, and a first port of the first circulator connected to the second circulator; a second band pass filter corresponding to the carrier frequency receiving signal, and the first The third port of the circulator is connected to the third circulator.

The second circulator is configured to combine the carrier frequency filtered signal of the first band pass filter to the first circulator; the third circulator is configured to send the converted signal forwarded by the first circulator to the second band a pass filter; the first circulator is arranged to transmit the signal after the second circulator is combined to the signal converter according to the shortest circular path, and to transmit the converted signal to the third circulator according to the shortest circular path.

Optionally, the 3 dB band of the first band pass filter includes at least a 3 dB band of the service signal in the corresponding carrier frequency signal, and the 3 dB band of the second band pass filter includes the service in the corresponding carrier frequency signal The 3dB band of the signal. This improves the filtering effect of the bandpass filter.

Optionally, a center frequency point of a frequency band of the first band pass filter is equal to a center frequency point of a frequency band of the service signal in the corresponding carrier frequency signal, and a center frequency point of the frequency band of the second band pass filter is equal to The center frequency of the frequency band of the traffic signal in the carrier frequency receiving signal. This further improves the filtering effect of the band pass filter.

Optionally, in a case where the ring order of the ports of the first circulator is unchanged, the first port, the second port, and the third port may be any one of the first circulators.

Alternatively, the second circulator may be composed of one three-port circulator or one or more three-port circulators; the third circulator may be composed of one three-port circulator or one or more three-port circulators Cascade composition. In this way, it is ensured that the circulators in the device of the embodiment of the present invention are three-port circulators having three ports, which reduces the implementation complexity of the device, is beneficial to reducing the production cost of the device, and improves the production yield of the device. .

It should be noted that, on the one hand, the frequency band of the signal converter includes at least a frequency band of a carrier frequency signal connected to the device, that is, a frequency band including a carrier frequency signal and a carrier frequency signal. In another aspect, the frequency band of the first circulator includes at least a frequency band of a carrier frequency signal connected to the device, that is, a frequency band including the carrier frequency signal and the carrier frequency receiving signal, and the frequency band of the second circulator includes at least The frequency band over which the carrier frequency signals, the frequency band of the third circulator includes at least the frequency band of the carrier frequency signal transmitted thereto. This ensures the effect of the combination and distribution of the apparatus of the embodiment of the invention.

The device of the embodiment of the invention can realize the combination or distribution of any number of carrier frequency signals.

FIG. 4 is a schematic structural diagram of a device for realizing the allocation of carrier frequency signals according to an embodiment of the present invention. As shown in FIG. 4, the combining or distributing of two carrier frequency signals is realized, that is, f1 transmission and f2 transmission are realized. The combination of the carrier frequency signals and the allocation of the carrier frequency signals received by f1 and f2. In FIG. 4, 1 is a first circulator, 2 is a second circulator, 3 is a third circulator, 41 is a first band pass filter corresponding to f1, and 42 is a first band corresponding to f2 Pass filter, 11 is the first port, 12 is the second port, and 13 is the third port. In this embodiment, the second circulator and the third circulator are both three-port circulators, and the first circulator first port 11 is connected to a signal converter such as an antenna.

In this example, the circulators are connected by a cable between the circulator and the corresponding bandpass filter.

In this example, the combining mechanism for signaling the two carrier frequencies is: f1 is transmitted via the corresponding first bandpass filtering. The device 41 enters the port 22 of the second circulator 2, then enters the second port 12 of the first circulator 1 through the port 21 of the second circulator 2, and is finally sent out through the first port 11 of the first circulator 1; f2 The signal enters the port 23 of the second circulator via the corresponding first band pass filter 42 and then enters the first band pass filter 41 through the port 22 of the second circulator 2, since the first band pass filter 41 and f2 If not, the band pass filter 41 does not match the f2, and the f2 is bounced back to the port 22 of the second circulator 2 by the first band pass filter 41, and then enters the first ring from the port 21 of the second circulator 2 The second port 12 of the device 1 is finally transmitted via the first port 11 of the first circulator 1. In this way, the f1 transmission and the f2 transmission are both sent out from the first port 11, that is, the combination of the f1 transmission and the f2 transmission is realized, and since the first port 11 of the first circulator 1 is connected to the antenna, the f1 transmission and the f2 transmission are performed. Both are converted by the antenna into wireless signals for transmission.

Similarly, the allocation mechanism of the signals received by the two carrier frequencies will not be described here.

It should be noted that, in the embodiment shown in FIG. 4, it is measured that the insertion loss of the path passed during the period from the f1 to the corresponding first band pass filter 41 to f1 is transmitted from the first port 11. Approximately 1.6 dB; from f2 to the corresponding first bandpass filter 42 to f1 is sent out from the first port 11, the insertion loss of the path passed during the period is about 2 dB; the reverse insertion loss is also about 1.6 respectively. dB and 2dB.

FIG. 5 is a schematic diagram of another component structure of an apparatus for implementing carrier frequency signal combining and splitting according to an embodiment of the present invention. As shown in FIG. 5, a combination or allocation of four carrier frequency signals is implemented, that is, f1 transmission and f2 are implemented. The combination of the carrier frequency signals of the transmission, f3 transmission and f4 transmission, and the assignment of the carrier frequency signals of f1 reception, f2 reception, f3 reception and f4 reception. In Fig. 5, a three-port circulator 2.1, a three-port circulator 2.2 and a three-port circulator 2.3 are cascaded into a second circulator 2, a three-port circulator 3.1, a three-port circulator 3.2 and a three-port circulator 3.3 cascading It is the third circulator 3.

In this example, a straight button connection is used between the partial circulator and the corresponding band pass filter, for example, a straight button connection between the circulator 2.2 and the corresponding first band pass filter 41. This straight-button connection eliminates the cable between the circulator and the corresponding bandpass filter, which eliminates the insertion loss introduced by the cable, further reducing the insertion loss of the device.

Referring to the combining and distributing mechanism in the previous composition structure, the combining and distributing mechanism of the device shown in FIG. 5 can be known, and details are not described herein again.

FIG. 6 is a flowchart of a method for implementing carrier frequency signal combining and splitting according to an embodiment of the present invention, as shown in FIG. 6 Show, including:

Step 601: Two or more first band-pass filters respectively perform band-pass filtering processing on two or two channels for uploading a frequency-sending signal, and the carrier-frequency signal and the first band-pass filter are one by one. Correspondingly; the loop combiner splits the two channels or two paths that have been band-pass filtered by the first band pass filter respectively to perform the combined processing of the upload frequency signal, and sends the combined signal to the signal converter. ;

Step 602: The circular combining distributor sends the converted signal of the signal converter to two or more second band pass filters; the second band pass filter performs the converted signal of the signal converter. The band pass filtering process obtains two or two channels to upload a frequency receiving signal, and the carrier frequency receiving signal is in one-to-one correspondence with the second band pass filter.

Wherein the ring-shaped combiner is composed of three or more circulators; the frequency band of the first band-pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the second band pass The frequency band of the filter includes the frequency band of the traffic signal in the corresponding carrier frequency received signal.

It should be noted that step 601 and step 602 can be performed simultaneously. Step 601 is used to implement two or two combined signals for uploading frequency signals, and step 602 is used to implement two or two to allocate frequency signals.

Wherein the annular combiner distributor comprises a first circulator, a second circulator and a third circulator.

In step 601, the loop combining distributor performs two-way or two-way band-pass filtering on the first band-pass filter to perform the combined processing of the uplink frequency signal.

The second circulator combines the carrier frequency signal processed by the bandpass filtering process of the first band pass filter to the second port of the first circulator; the first circulator combines the combined signal from the first ring The first port of the device is sent to the signal converter.

In step 602, the circular combining distributor transmitting the signal converted by the signal converter to the two or more second band pass filters may include:

The first circulator receives the signal converted by the signal converter from the first port, and transmits the converted signal to the third port of the first circulator; the third port of the first circulator outputs the converted a signal to the third circulator; the third circulator transmits the received converted signal to two or more second band pass filters, respectively.

Alternatively, the second circulator may be composed of a three-port circulator or a cascade of more than one three-port circulator.

Alternatively, the third circulator may be composed of a three-port circulator or a cascade of more than one three-port circulator.

Optionally, the 3 dB band of the first band pass filter includes at least a 3 dB band of the service signal in the corresponding carrier frequency signal, and the 3 dB band of the second band pass filter includes the service in the corresponding carrier frequency signal The 3dB band of the signal.

Optionally, a center frequency point of a frequency band of the first band pass filter is equal to a center frequency point of a frequency band of the service signal in the corresponding carrier frequency signal, and a center frequency point of the frequency band of the second band pass filter is equal to The center frequency of the frequency band of the traffic signal in the carrier frequency receiving signal.

Optionally, the frequency band of the signal converter includes at least a frequency band of the carrier frequency signal transmitted to the second circulator and the carrier frequency signal transmitted to the third circulator.

Optionally, the frequency band of the first circulator includes at least a frequency band of a carrier frequency signal sent to the second circulator and a carrier frequency signal sent to the third circulator, and the frequency band of the second circulator includes at least The frequency band in which the carrier frequency signals, the frequency band of the third circulator includes at least the frequency band of the carrier frequency signal transmitted thereto.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware or in the form of a software function module. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

Industrial applicability

According to the technical solution of the embodiment of the present invention, since the sum of the insertion loss introduced by the circulator and the band pass filter is small, in the communication system in which two or two signals are combined or distributed by the uplink frequency signal, the communication system is greatly reduced. The influence of the combination or distribution of two or two signals on the communication frequency on the communication capability is better, thereby ensuring the transmission distance and transmission capacity of the communication system.

Claims

A device for realizing the distribution of carrier frequency signals, the device being arranged to be connected to a signal converter, the device comprising a circular combined distributor consisting of three or more circulators cascaded, two or two a first band pass filter, and two or more second band pass filters, wherein the first band pass filter and the second band pass filter are both connected to the ring combiner; among them:

The first band pass filter is configured to perform band pass filtering processing on two or two channels for uploading frequency-transmitted signals, wherein the carrier frequency signal is in one-to-one correspondence with the first band-pass filter;

The ring-shaped combiner is configured to combine two or two channels that have been band-pass filtered by the first band-pass filter to perform uplink processing, and send the combined signal to the signal. The signal converter, the signal converted by the signal converter is sent to the second band pass filter;

The second band pass filter is configured to perform band pass filtering processing on the converted signal of the signal converter to obtain two or two channels to upload a frequency receiving signal, and the carrier frequency receiving signal and the second signal One-to-one correspondence between bandpass filters;

The frequency band of the first band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the frequency band of the second band pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal.
The apparatus of claim 1, wherein the annular combiner includes a first circulator, a second circulator, and a third circulator, the first port, the second port, and the third port of the first circulator Arranging to be respectively connected to the signal converter, the second circulator and the third circulator; the port of the first circulator is in the order of a first port, a third port, a second port, and the second circulator a first band pass filter connection, the third circulator being coupled to the second band pass filter, wherein:

a carrier frequency signal processed by the first band pass filter band pass filter is an input of the second circulator, and the second circulator performs a combined signal of the carrier frequency signal as the An input of a second port of the first circulator, the first port of the first circulator outputs a signal to the signal converter;

The converted signal of the signal converter is an input signal of the first port of the first circulator, and the third port of the first circulator outputs a signal to the third circulator, and the output of the third circulator After the second band pass filter is filtered, the carrier frequency is received.
The apparatus of claim 2 wherein said second circulator consists of a three port circulator or is cascaded by more than one three port circulator.
The apparatus of claim 2 wherein said third circulator consists of a three port circulator or is cascaded by more than one three port circulator.
The apparatus according to any one of claims 1 to 4, wherein a center frequency point of a frequency band of the first band pass filter is equal to a center frequency point of a frequency band of a service signal in a corresponding carrier frequency signal, The center frequency of the frequency band of the second band pass filter is equal to the center frequency point of the frequency band of the traffic signal in the corresponding carrier frequency received signal.
The apparatus according to any one of claims 1 to 4, wherein a 3 dB band of the first band pass filter includes a 3 dB band of a traffic signal in a corresponding carrier frequency signal, the second band pass filter The 3dB band includes the 3dB band of the traffic signal in the corresponding carrier frequency received signal.
The apparatus according to any one of claims 2 to 4, wherein a frequency band of the first circulator includes a frequency band of the carrier frequency signal and a carrier frequency receiving signal, and a frequency band of the second circulator includes the A frequency band in which the carrier frequency signals, and a frequency band of the third circulator includes a frequency band of the carrier frequency receiving signal.
A method for realizing carrier frequency signal combining, the method comprising:

Two or more first band-pass filters respectively perform band-pass filtering processing on two or two channels for uploading frequency-transmitted signals, and the carrier-frequency signal is in one-to-one correspondence with the first band-pass filter;

The loop combiner splits the two channels or two paths that have been band-pass filtered by the first band pass filter respectively to perform the combined processing of the upload frequency signal, and sends the combined signal to the signal converter;

The loop combiner distributes the converted signal of the signal converter to two or more second band pass filters;

The second band pass filter performs band pass filtering processing on the converted signal of the signal converter to obtain two or two channels for uploading a frequency receiving signal, and the carrier frequency receiving signal and the second band pass filtering One-to-one correspondence;

Wherein the ring-shaped combiner is composed of three or more circulators; the frequency band of the first band-pass filter includes a frequency band of a service signal in a corresponding carrier frequency signal, and the second The band of the bandpass filter includes the frequency band of the traffic signal in the corresponding carrier frequency received signal.
The method of claim 8 wherein said annular combiner distributor comprises a first loop a second circulator and a third circulator;

The ring-shaped combiner splits the two channels or two channels that have been band-pass filtered by the first band-pass filter respectively to perform combined processing by uploading a frequency-sending signal, including:

The second circulator combines the carrier frequency signal processed by the first band pass filter band pass filter to the second port of the first circulator; the first circulator combines the combined signal from the first circulator The first port is sent to the signal converter;

The ring-shaped combiner distributes the converted signal of the signal converter to two or more second band-pass filters, including:

The first circulator receives the signal converted by the signal converter from the first port, and transmits the converted signal to the third port of the first circulator; the third port of the first circulator outputs the Converting the converted signal to the third circulator; the third circulator transmits the received converted signal to two or more second band pass filters respectively;

The port sequence of the first circulator is a first port, a third port, and a second port.
The method of claim 9 wherein said second circulator consists of a three port circulator or is cascaded by more than one three port circulator.
The method of claim 9 wherein said third circulator consists of a three port circulator or is cascaded by more than one three port circulator.
The method according to any one of claims 8 to 11, wherein a center frequency point of a frequency band of the first band pass filter is equal to a center frequency point of a frequency band of a service signal in a corresponding carrier frequency signal, The center frequency of the frequency band of the second band pass filter is equal to the center frequency point of the frequency band of the traffic signal in the corresponding carrier frequency received signal.
The method according to any one of claims 8 to 11, wherein

The 3dB band of the first band pass filter includes a 3dB band of the service signal in the corresponding carrier frequency signal, and the 3dB band of the second band pass filter includes 3dB of the service signal in the corresponding carrier frequency signal frequency band;

The frequency band of the signal converter includes a frequency band of the carrier frequency signal and the carrier frequency signal;

The frequency band of the first circulator includes a frequency band of the carrier frequency signal and the carrier frequency receiving signal, the frequency band of the second circulator includes a frequency band of the carrier frequency signal, and the frequency band of the third circulator includes The frequency band of the carrier frequency receiving signal.