CN107431499A - A kind of duplexer and wireless transceiver system - Google Patents
A kind of duplexer and wireless transceiver system Download PDFInfo
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- CN107431499A CN107431499A CN201580078558.4A CN201580078558A CN107431499A CN 107431499 A CN107431499 A CN 107431499A CN 201580078558 A CN201580078558 A CN 201580078558A CN 107431499 A CN107431499 A CN 107431499A
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- 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
- H01P1/36—Isolators
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
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- 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
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Abstract
The embodiments of the invention provide a kind of duplexer and wireless transceiver system, to solve the problems, such as current duplexer, there is complicated and can not filter out external interference signals or relatively low there is receive-transmit isolation.Receiving directional filter connection receiving module in the duplexer, each bypass filter connect a different matched load；Matching network has n+3 port, the port of the first port connection antenna of matching network, second port connection receiving directional filter, the 3rd port connection direction of the launch wave filter；Each port in matching network in addition to first port, second port and the 3rd port connects a different bypass filter；Matching network, for realizing the impedance matching between the port of antenna, the output port of direction of the launch wave filter, the input port of receiving directional filter and the input port of each bypass filter；The connected matched load of each bypass filter, the signal in passband for consuming bypass filter.
Description
The present invention relates to field of communication technology, in particular to a kind of duplexer and wireless transceiver system.
Duplexer is the critical component for the wireless transceiver system that transmitting-receiving works at the same time, it is that should be coupled into faint reception signal to come that it, which is acted on, the biggish transmitting signal of power is fed to antenna up again, and the two is required respectively to complete the function of oneself without interacting.Fig. 1 is the structural schematic diagram of duplexer, duplexer is usually by two groups of different frequency filters, direction of the launch filter 11 and receiving directional filter 12 as shown in figure 1 forms, wherein, direction of the launch filter 11 is connected with transmitting module 13, emitting link includes direction of the launch filter 11 and transmitting module 13, and receiving directional filter 12 is connected with receiving module 14, and receives link includes receiving directional filter 12 and receiving module 14.Receiving directional filter 12 is bandpass filter, frequency is located at the target signal filter in the stopband of receiving directional filter 12 by receiving directional filter 12, and the signal that frequency is located in the passband of receiving directional filter 12 passes through, the frequency for receiving signal is located in the passband of receiving directional filter 12, the frequency of transmitting signal is located in the stopband of receiving directional filter 12, signal can be emitted in this way to avoid transmitting chain road and be leaked to receiving module, influence receiving module normal work.Duplexer receive-transmit isolation is a critically important performance indicator of wireless transceiver system, when transceiver channel works at the same time, the signal energy for emitting link can partially be leaked into receives link, if leakage signal is larger, receives link can then be formed and be interfered, deteriorate receives link performance.
In modern wireless communication systems, the deployment of base station is more and more intensive, coupled interference problem between our station dual-mode antenna between co-located dual-mode antenna is increasingly severe, and jamming power is usually relatively strong, these interference signals can deteriorate the performance of receiving module, and wireless transceiver system performance can be promoted by improving duplexer receive-transmit isolation and jamproof ability.
At present, it is a kind of improve duplexer receive-transmit isolation method as described in the patent application No. is CN200710121145.7, it is that the transmitting signal that will be coupled from transmitting terminal is coupled to receiving end after amplitude, phase and delay process, the signal cancellation of the transmitting terminal leakage received with receiving end, thus
It realizes the decaying for the signal revealed transmitting terminal, reduces influence of the signal of transmitting terminal leakage to receiving module.But when receive-transmit isolation in this way to improve duplexer, the hardware configuration of duplexer is complicated, realizes that difficulty is larger, also, this method can not achieve filtering out for the interference signal introduced to outside.Another kind improves the method for the receive-transmit isolation of duplexer as described in the patent application No. is CN201180035204.3, it is to increase variable impedance between receiving directional filter 12 and antenna common end, improves the receive-transmit isolation of duplexer by adjusting variable impedance at different frequencies.But this method is smaller to the castering action of the receive-transmit isolation of duplexer.
In conclusion when improving the receive-transmit isolation of duplexer using existing method, there is duplexer, structure is complicated and the problem of cannot filtering out the interference signal of external introducing, or to there is a problem that isolation is promoted limited.
Summary of the invention
The embodiment of the invention provides a kind of duplexer and wireless transceiver systems, to improve the receive-transmit isolation of duplexer using simple structure and filter out the external interference signal introduced.
In a first aspect, providing a kind of duplexer, including matching network, direction of the launch filter, receiving directional filter, n bypass filter and n matched load, n are positive integer；The receiving directional filter connects receiving module, and each bypass filter connects a different matched load；
The matching network has n+3 port, and the first port of the matching network is used to connect the port of antenna, and the second port of the matching network connects receiving directional filter, and the third port of the matching network connects direction of the launch filter；Except each port of the first port, the second port in addition to the third port connects a different bypass filter in the matching network；
The matching network, for realizing the impedance matching between the input port of the port of antenna, the output port of direction of the launch filter, the input port of receiving directional filter and each bypass filter；
Each bypass filter, for being transferred to the matched load that the bypass filter connects by the target signal filter in the bypass filter stopband, and by the signal in the bypass filter passband；
Each matched load, for consuming the signal received from bypass filter.
With reference to first aspect, in the first possible implementation, the matching network includes first
With unit and a circulator with n+2 port；
The a port of first matching unit is the first port of the matching network, second port of first matching unit is the third port of the matching network, and the third port of first matching unit is used for the circulator output signal with n+2 port；
The a port of the circulator with n+2 port receives the signal of the first matching unit output, another port of the circulator with n+2 port is the second port of the matching network, and other each ports of the circulator for having n+2 port in addition to the port for receiving the signal that first matching unit exports and as the port of the second port of matching network are separately connected a bypass filter；
First matching unit, for realizing the impedance matching between the port for the signal for receiving the first matching unit output in the port of antenna, the output port of direction of the launch filter and the circulator with n+2 port.
With reference to first aspect, in the second possible implementation, the matching network includes the second matching unit and the n circulator having there are three port；
The a port of second matching unit is the first port of the matching network, second port of second matching unit is the third port of the matching network, and the third port of second matching unit is used for first circulator output signal；
The a port of first circulator receives the signal of second matching unit output, and the third port of first circulator is to second circulator output signal；
The a port of n-th circulator receives the signal of (n-1)th circulator output, and the third port of n-th of circulator is to receiving directional filter output signal；
The a port of k-th circulator receives the signal of -1 circulator of kth output, and the third port of k-th of circulator is to+1 circulator output signal of kth；K is positive integer, and k=2 ..., n-1；
Second port in each circulator is to a different bypass filter output signal；
In each circulator, signal is transmitted along the direction of a port, second port, third port；
Second matching unit, for realizing the port of antenna, the output port of direction of the launch filter
And received in first circulator second matching unit output signal port between impedance matching.
With reference to first aspect, in the third possible implementation, there are four ports for the matching network tool；
The matched load that bypass filter is connect with the bypass filter constitutes trapper, for emitting, link to be leaked to the signal of receives link or external interference signals filter out.
With reference to first aspect, in the fourth possible implementation, there are five ports for the matching network tool；
The matched load that one bypass filter is connect with the bypass filter constitutes a trapper, and the signal for being leaked to receives link to transmitting link filters out；
The matched load that another bypass filter is connect with the bypass filter constitutes another trapper, for filtering out to external interference signals.
With reference to first aspect, in a fifth possible implementation, the matched load that each bypass filter is connect with the bypass filter constitutes trapper.
With reference to first aspect, in a sixth possible implementation, the signal in the passband for the bypass filter that matched load is connect with the matched load matches.
With reference to first aspect, in the 7th kind of possible implementation, at least one bypass filter in the n bypass filter is tunable filter.
Second aspect, provides a kind of wireless transceiver system, including receiving module, transmitting module, antenna and duplexer provided in an embodiment of the present invention, and the receiving module, the transmitting module and the antenna are all connected with the duplexer.
The beneficial effect of the embodiment of the present invention includes:
A kind of duplexer and wireless transceiver system provided in an embodiment of the present invention, the impedance matching between the input port of the port of antenna, the output port of direction of the launch filter, the input port of receiving directional filter and each bypass filter may be implemented in matching network therein, in this way, the signal received from antenna can be output to bypass filter by the port of connection bypass filter by matching network, signal in its passband is transferred to coupled matching and born by the target signal filter in its stopband by bypass filter
It carries, matched load can consume the signal received from bypass filter, in this way, as long as adjusting the parameter of the bypass filter of matching connection load, so that the frequency for the signal that transmitting link leaks into receives link is located in the passband of bypass filter, the matched load being connected with the bypass filter can consume the signal that transmitting link leaks into receives link, or the parameter of the bypass filter of adjustment one matching connection load, so that the frequency of external interference signals is located in the passband of bypass filter, the matched load being connected with the bypass filter can consume external interference signals, similarly, the signal received from antenna can be output to receiving directional filter by the port of connection receiving directional filter by matching network, frequency can be located in the stopband of the receiving directional filter by receiving directional filter Signal filters, and the reception signal that frequency is located in the passband of the receiving directional filter passes through, therefore, duplexer provided in an embodiment of the present invention the signal of receives link can be leaked into for transmitting link and/or external interference signals carry out trap, improves the isolation of duplexer to realize using simple structure.
Fig. 1 is the structural schematic diagram of duplexer in the prior art；
Fig. 2 is one of the structural schematic diagram of duplexer provided in an embodiment of the present invention；
Fig. 3 is the second structural representation of duplexer provided in an embodiment of the present invention；
Fig. 4 is the third structural representation of duplexer provided in an embodiment of the present invention；
When Fig. 5 is using duplexer shown in Fig. 4, antenna-transmitting module frequency response curve and antenna-receiving module frequency response curve；
When Fig. 6 a and Fig. 6 b are using duplexer shown in Fig. 4, receives link interior joint 1., the schematic diagram of signal 2. 3. located with node of node；
Fig. 7 is the four of the structural schematic diagram of duplexer provided in an embodiment of the present invention；
When Fig. 8 is using duplexer shown in Fig. 7, node in receives link 1., node 2., the schematic diagram of signal 3. 4. located with node of node.
A kind of duplexer and wireless transceiver system provided in an embodiment of the present invention, matching network therein can be with
Realize the impedance matching between the input port of the port of antenna, the output port of direction of the launch filter, the input port of receiving directional filter and each bypass filter；The coupled matched load of each bypass filter constitutes a trapper, parameter by the way that each bypass filter is arranged can leak into the signal of receives link to transmitting link and external interference signals carry out trap, improves the isolation of duplexer to realize using simple structure.
The specific embodiment of a kind of duplexer provided in an embodiment of the present invention and wireless transceiver system is illustrated with reference to the accompanying drawings of the specification.
A kind of duplexer provided in an embodiment of the present invention, as shown in Fig. 2, being positive integer including matching network 21, direction of the launch filter 27, receiving directional filter 25, n bypass filter 22 and n matched load 23, n；The receiving directional filter 25 connects receiving module 26, and each bypass filter 22 connects one matched load 23, and different bypass filters 22 connects different matched loads 23；
Matching network 21 has n+3 port, the port I/O of the first port connection antenna 24 of the matching network 21, and the second port of the matching network 21 connects receiving directional filter 25, and the third port of the matching network connects direction of the launch filter 27；Each port other than first port described in the matching network 21, the second port and the third port connects one bypass filter 22, and the different port in matching network 21 connects different bypass filters 22；
The matching network, for the impedance matching between the input port I2 of the port I/O of antenna 24, the output port O of direction of the launch filter 27, the input port I1 of receiving directional filter 25 and each bypass filter 22；
The port I/O of antenna 24 is that antenna 24 receives signal from matching network 21 or sends the port of signal to matching network 21, the output port O of direction of the launch filter 27 is the connecting pin of direction of the launch filter 27 Yu matching network 21, the input port I1 of receiving directional filter 25 is the connecting pin of receiving directional filter 25 Yu matching network 21, and the input port I2 of each bypass filter 22 is the connecting pin of the bypass filter 22 and matching network 21；
Each bypass filter 22, for being transferred to the matched load 23 being connected with the bypass filter 22 by the target signal filter in 22 stopband of bypass filter, and by the signal in 22 passband of bypass filter；
Each matched load 23, for consuming the signal received from bypass filter 22；That is,
Each bypass filter 22 and coupled matched load 23 carry out trap for the signal in the passband to the bypass filter.
Bypass filter in duplexer provided in an embodiment of the present invention can borrow the design of direction of the launch filter directly to filter out the signal and external interference signals that transmitting link leaks into receives link.
Wherein, matched load can be only with transmitting Signal Matching, can also be only with reception Signal Matching, can also be only with the Signal Matching in the passband of bypass filter, can also be with the Signal Matching in Whole frequency band.
Optionally, the signal in the passband for the bypass filter that matched load is connect with the matched load matches, so that the signal losses in the passband for the bypass filter connecting with the matched load be fallen.
Optionally, about signal is consumed, refer to that the signal is converted into other energy or the signal form of expression in the branch, as long as being converted to the form of expression of non-interference, such as signal is converted into heat at matched load and dissipates.
It further include the transmitting module 28 being connected with direction of the launch filter 27, the receiving module 26 being connected with receiving directional filter 25 in Fig. 2；The part in dotted line frame in Fig. 2 is duplexer provided in an embodiment of the present invention.
In duplexer provided in an embodiment of the present invention, matching network, bypass filter and matched load are located at receiving branch, realize trap function, the transmitting signal for being leaked to receiving branch and/or other external interference signals can be provided and additional filter out ability, promote the receive-transmit isolation and external disturbance rejection ability of duplexer, transmitting link leakage signal and external interference signals is avoided to influence receives link work, lifting system performance.
Optionally, the matching network in duplexer provided in an embodiment of the present invention includes the first matching unit and a circulator with n+2 port；
The a port of first matching unit is the first port of the matching network, second port of first matching unit is the third port of the matching network, and the third port of first matching unit is used for the circulator output signal with n+2 port；
The a port of the circulator with n+2 port receives the signal of the first matching unit output, another port of the circulator with n+2 port is the second port of the matching network, port of the circulator for having n+2 port except the signal for receiving the first matching unit output
A bypass filter is separately connected with other each ports other than the port as the second port of matching network；
First matching unit, for realizing the impedance matching between the port for the signal for receiving the first matching unit output in the port of antenna, the output port of direction of the launch filter and the circulator with n+2 port.
Wherein, first matching unit can use different devices, be made of passive device such as the first matching unit, if can be realized the port of antenna, direction of the launch filter output port and the circulator with n+2 port in receive impedance matching between the port of the signal that first matching unit exports.
Optionally, the structure of the matching network in duplexer provided in an embodiment of the present invention is as shown in figure 3, matching network 21 includes that there are three the circulators 31 and the second matching unit 32 of port for n tool；
The a port 1 of second matching unit 32 is the first port of the matching network, second port 2 of second matching unit is the third port of the matching network, and the third port 3 of second matching unit is used for first circulator output signal；That is a port 1 of the second matching unit 32 connects the port I/O of antenna 24, the output port O of second port 2 connection direction of the launch filter 27 of the second matching unit 32；
The a port 1 of first circulator 31 receives the signal of the second matching unit 32 output, and the third port 3 of first circulator 31 is to second 31 output signal of circulator；
The a port 1 of n-th circulator 31 receives the signal of (n-1)th circulator 31 output, and the third port 3 of n-th of circulator 31 is to 25 output signal of receiving directional filter；
The a port 1 of k-th circulator 31 receives the signal that -1 circulator of kth 31 exports, and the third port 3 of k-th of circulator 31 is to 31 output signal of+1 circulator of kth；K is positive integer, and k=2 ..., n-1；
Second port 2 in each circulator 31 is respectively to 22 output signal of bypass filter；
In each circulator 31, signal is only capable of transmitting along one direction, and in Fig. 3, signal is only capable of transmitting along the direction of 1, second port 2 of a port, third port 3；
Second matching unit 32, for realizing the output of the port, direction of the launch filter 27 of antenna 24
The impedance matching between the port of the signal of the second matching unit 32 output is received in port and first circulator 31.
Wherein, second matching unit can use different devices, such as, second matching unit can be made of passive device, as long as can be realized the impedance matching between the port for receiving the signal of the second matching unit output in the port of antenna, the output port of direction of the launch filter and first circulator 31.
It is illustrated so that matching network includes circulator of 3 tools there are three port as an example in Fig. 3.
Optionally, duplexer provided in an embodiment of the present invention, it (is illustrated so that matching network includes the circulator of the second matching unit and three port as an example in Fig. 4 as shown in Figure 4, wherein the second matching unit is not shown in Fig. 4, the connection type of second matching unit and the second matching unit in Fig. 3 and connection type is identical), there are four ports, i.e. n=1 for matching network tool in duplexer；
The matched load 23 that bypass filter 22 is connect with the bypass filter 22 constitutes trapper.When the frequency for emitting the signal (i.e. transmitting leakage signal in Fig. 4) that link leaks into receives link is located in the passband of bypass filter 22, bypass filter 22 and the matched load 23 being connected with the bypass filter 22 constitute trapper, so that the signal for being leaked to receives link to transmitting link filters out.When the frequency of external interference signals is located in the passband of bypass filter 22, bypass filter 22 and the matched load 23 being connected with the bypass filter 22 constitute trapper, to filter out to external interference signals.
When the signal that the trapper of bypass filter 22 and the composition of matched load 23 in Fig. 4 is leaked to receives link to transmitting link filters out, external interference signals can be filtered out by receiving directional filter 25.At this time, the frequency response of antenna-transmitting module and the frequency response of antenna-receiving module are as shown in Figure 5, wherein, the amplitude-frequency characteristic of the frequency response of antenna-transmitting module i.e. direction of the launch filter, when the frequency response of antenna-receiving module i.e. signal are transferred to receiving directional filter and export from antenna after the trapper that bypass filter and matched load are constituted, the frequency of the signal of receiving directional filter output and the relationship of amplitude.From figure 5 it can be seen that the trapper that bypass filter and matched load are constituted has filtered out the signal that transmitting link is leaked to receives link.
When the trapper of bypass filter 22 and the composition of matched load 23 in Fig. 4 filters out external interference signals, the signal that transmitting link is leaked to receives link can be filtered by receiving directional filter 25
It removes.At this point, node in receives link in Fig. 4 1., the signal 2. 3. located with node of node is as shown in Fig. 6 a or Fig. 6 b.The difference of Fig. 6 a and Fig. 6 b are: in Fig. 6 a, the frequency of external interference signals is leaked to the frequency of the signal of receives link closer to transmitting link；In figure 6b, frequency of the frequency of external interference signals closer to reception signal.In Fig. 4,1. signal that node is located is signal of the second matching unit (being not shown in Fig. 4) output to circulator.
Optionally, duplexer provided in an embodiment of the present invention, it (is illustrated so that matching network includes the circulator of the second matching unit and two three ports as an example in Fig. 7 as shown in Figure 7, wherein the second matching unit is not shown in Fig. 7, the connection type of second matching unit and the second matching unit in Fig. 3 and connection type is identical), there are five ports for matching network (being made of the two circulators 31) tool in duplexer；
The matched load 23 that one bypass filter 22 (frequency for the signal that transmitting link is leaked to receives link is located in the passband of the bypass filter 22) connect with the bypass filter 22 constitutes a trapper, and the signal for being leaked to receives link to transmitting link filters out；
The matched load 23 that another bypass filter 22 (frequency of external interference signals is located in the passband of the bypass filter 22) is connect with the bypass filter 22 constitutes another trapper, for filtering out to external interference signals.
Node in the receives link of duplexer shown in Fig. 7 1., node 2., the signal 3. 4. located with node of node it is as shown in Figure 8.In Fig. 7,1. signal that node is located is signal of the second matching unit (being not shown in Fig. 7) output to first circulator.
Bypass filter in duplexer provided in an embodiment of the present invention can be tunable filter, by adjusting the passband frequency range of tunable filter, to realize the trap frequency adjustable function of trapper, to realize that the flexible tracking of the signal and external interference signals that are leaked to receives link to transmitting link inhibits, allow to improve the receive-transmit isolation of duplexer with simple structure.
Wireless transceiver system provided in an embodiment of the present invention, including receiving module, transmitting module, antenna and duplexer provided in an embodiment of the present invention, the receiving module, transmitting module and antenna are all connected with the duplexer.
Optionally, the embodiment of the present invention also provides a kind of duplexer, comprising: increases annular in duplexer
Device adds filter branches, realizes and bypasses the transmitting signal of leakage, to enhance duplexer isolation.
Optionally, the embodiment of the present invention also provides a kind of duplexer, comprising: increases circulator in duplexer and adds filter branches, realizes and bypass to external high reject signal, to enhance the interference free performance of duplexer.
Optionally, the embodiment of the present invention also provides a kind of duplexer, include: to increase circulator and tunable filter branch in duplexer, realizes the isolation enhancing duplexer for flexibly tracking and filtering out to the transmitting signal and external interference signals revealed under different scenes (or different frequent points).
The present invention filters out ability by increasing bypass branch promotion duplexer receive-transmit isolation and interference signal in duplexer, promotes receiver performance, can reduce channel linear demand, promote dynamic range, increase base station covering power.Further, it realizes that duplexer isolation and interference signal rejection ability enhance by succinct mode, duplexer can be reduced and realize difficulty, reduce duplexer overall volume and weight.
Wireless transceiver system provided in an embodiment of the present invention can be base station, or terminal.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program product.Therefore, the form of complete hardware embodiment or embodiment combining software and hardware aspects can be used in the present invention.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) that one or more wherein includes computer usable program code can be used in the present invention.
The present invention be referring to according to the method for the embodiment of the present invention, the flowchart and/or the block diagram of equipment (system) and computer program product describes.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the device for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that being stored in the computer-readable memory
In instruction generate include command device manufacture, the command device realize in one or more flows of the flowchart and/or one or more blocks of the block diagram specify function.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, thus the step of instruction executed on a computer or other programmable device is provided for realizing the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
Although preferred embodiments of the present invention have been described, once a person skilled in the art knows basic creative concepts, then additional changes and modifications may be made to these embodiments.So it includes preferred embodiment and all change and modification for falling into the scope of the invention that the following claims are intended to be interpreted as.
Obviously, those skilled in the art can carry out various modification and variations without departing from the spirit and scope of the embodiment of the present invention to the embodiment of the present invention.If then the present invention is also intended to include these modifications and variations in this way, these modifications and variations of the embodiment of the present invention are within the scope of the claims of the present invention and its equivalent technology.
Claims (9)
- A kind of duplexer, which is characterized in that including matching network, direction of the launch filter, receiving directional filter, n bypass filter and n matched load, n is positive integer；The receiving directional filter connects receiving module, and each bypass filter connects a different matched load；The matching network has n+3 port, the port of the first port connection antenna of the matching network, and the second port of the matching network connects receiving directional filter, and the third port of the matching network connects direction of the launch filter；Except each port of the first port, the second port in addition to the third port connects a different bypass filter in the matching network；The matching network, for realizing the impedance matching between the input port of the port of antenna, the output port of direction of the launch filter, the input port of receiving directional filter and each bypass filter；Each bypass filter, for being transferred to the matched load that the bypass filter connects by the target signal filter in the bypass filter stopband, and by the signal in the bypass filter passband；Each matched load, for consuming the signal received from bypass filter.
- Duplexer as described in claim 1, which is characterized in that the matching network includes the first matching unit and a circulator with n+2 port；The a port of first matching unit is the first port of the matching network, second port of first matching unit is the third port of the matching network, and the third port of first matching unit is used for the circulator output signal with n+2 port；The a port of the circulator with n+2 port receives the signal of the first matching unit output, another port of the circulator with n+2 port is the second port of the matching network, and other each ports of the circulator for having n+2 port in addition to the port for receiving the signal that first matching unit exports and as the port of the second port of matching network are separately connected a bypass filter；First matching unit, for realizing the impedance matching between the port for the signal for receiving the first matching unit output in the port of antenna, the output port of direction of the launch filter and the circulator with n+2 port.
- Duplexer as described in claim 1, which is characterized in that the matching network includes the second matching unit and the n circulator having there are three port；The a port of second matching unit is the first port of the matching network, second port of second matching unit is the third port of the matching network, and the third port of second matching unit is used for first circulator output signal；The a port of first circulator receives the signal of second matching unit output, and the third port of first circulator is to second circulator output signal；The a port of n-th circulator receives the signal of (n-1)th circulator output, and the third port of n-th of circulator is to receiving directional filter output signal；The a port of k-th circulator receives the signal of -1 circulator of kth output, and the third port of k-th of circulator is to+1 circulator output signal of kth；K is positive integer, and k=2 ..., n-1；Second port in each circulator is to a different bypass filter output signal；In each circulator, signal is transmitted along the direction of a port, second port, third port；Second matching unit, for realizing the impedance matching between the port for the signal for receiving the second matching unit output in the port of antenna, the output port of direction of the launch filter and first circulator.
- Duplexer as described in claim 1, which is characterized in that there are four ports for the matching network tool；The matched load that bypass filter is connect with the bypass filter constitutes trapper, for emitting, link to be leaked to the signal of receives link or external interference signals filter out.
- Duplexer as described in claim 1, which is characterized in that there are five ports for the matching network tool；The matched load that one bypass filter is connect with the bypass filter constitutes a trapper, and the signal for being leaked to receives link to transmitting link filters out；The matched load that another bypass filter is connect with the bypass filter constitutes another trapper, for filtering out to external interference signals.
- Duplexer as described in claim 1, which is characterized in that the matched load that each bypass filter is connect with the bypass filter constitutes trapper.
- Duplexer as described in claim 1, which is characterized in that the signal in the passband for the bypass filter that matched load is connect with the matched load matches.
- Duplexer as described in claim 1, which is characterized in that at least one bypass filter in the n bypass filter is tunable filter.
- A kind of wireless transceiver system, which is characterized in that including receiving module, transmitting module, antenna and any duplexer of claim 1~8；The receiving module, the transmitting module and the antenna are all connected with the duplexer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/079717 WO2016187782A1 (en) | 2015-05-25 | 2015-05-25 | Duplexer and wireless transceiving system |
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| Publication Number | Publication Date |
|---|---|
| CN107431499A true CN107431499A (en) | 2017-12-01 |
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|---|---|---|---|
| CN201580078558.4A Pending CN107431499A (en) | 2015-05-25 | 2015-05-25 | A kind of duplexer and wireless transceiver system |
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| CN (1) | CN107431499A (en) |
| WO (1) | WO2016187782A1 (en) |
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| CN114006245A (en) * | 2021-10-13 | 2022-02-01 | 天津弘毅光技术有限公司 | Optical fiber amplifier for signal receiving and transmitting integration |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003179520A (en) * | 2001-12-13 | 2003-06-27 | Stanley Electric Co Ltd | Full duplex communication equipment |
| CN103109457A (en) * | 2010-05-17 | 2013-05-15 | 泰科电子服务股份有限公司 | Duplexer with enhanced isolation |
| US20150071132A1 (en) * | 2009-09-11 | 2015-03-12 | Broadcom Corporation | Rf front-end with wideband transmitter/receiver isolation |
| CN104577265A (en) * | 2014-12-22 | 2015-04-29 | 成都赛纳赛德科技有限公司 | Multiplexer group with circulator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114840A (en) * | 2007-08-30 | 2008-01-30 | 中兴通讯股份有限公司 | Method and device for enhancing transmitting-receiving isolation of mobile terminal |
| US9385683B2 (en) * | 2013-02-21 | 2016-07-05 | Mediatek Inc. | Diplexer and transceiver thereof |
-
2015
- 2015-05-25 CN CN201580078558.4A patent/CN107431499A/en active Pending
- 2015-05-25 WO PCT/CN2015/079717 patent/WO2016187782A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003179520A (en) * | 2001-12-13 | 2003-06-27 | Stanley Electric Co Ltd | Full duplex communication equipment |
| US20150071132A1 (en) * | 2009-09-11 | 2015-03-12 | Broadcom Corporation | Rf front-end with wideband transmitter/receiver isolation |
| CN103109457A (en) * | 2010-05-17 | 2013-05-15 | 泰科电子服务股份有限公司 | Duplexer with enhanced isolation |
| CN104577265A (en) * | 2014-12-22 | 2015-04-29 | 成都赛纳赛德科技有限公司 | Multiplexer group with circulator |
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|---|---|
| WO2016187782A1 (en) | 2016-12-01 |
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Application publication date: 20171201 |