CN110535449A - A kind of constant-resistance shortwave multiplexer - Google Patents
A kind of constant-resistance shortwave multiplexer Download PDFInfo
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- CN110535449A CN110535449A CN201910666746.9A CN201910666746A CN110535449A CN 110535449 A CN110535449 A CN 110535449A CN 201910666746 A CN201910666746 A CN 201910666746A CN 110535449 A CN110535449 A CN 110535449A
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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
- H03H7/38—Impedance-matching networks
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a kind of constant-resistance shortwave multiplexers, including an antenna port, 0 degree of phase shift module, at least two output ports.In addition, the multiplexer has a two-way basic model output channel, every road output channel its be connected between 0 degree of phase shift module and an output port and the LC short wave filter including lumped parameter production.The constant-resistance shortwave multiplexer also has at least two impedance matching networks, it is constructed and arranged into such form, it is connected between described two output channels, the band external impedance for matching the short wave filter of two connected output channels, i.e., so that antenna port (ANT) standing-wave ratio is less than 2.
Description
Technical field
The present invention relates to communication technique fields, it particularly relates to a kind of constant-resistance shortwave multiplexer.
Background technique
With the high speed development of wireless communication technique, high performance short wave communication Receiver And Transmitter system increasingly by
It to the concern of people, is suffered from Military and civil fields and is widely applied space, short wave communication Receiver And Transmitter will not only have
Highly sensitive, High Linear performance indicator, while the broadband requirement of Receiver And Transmitter is also continuously improved.Especially penetrating
Under frequency directly trend of the sampling technique as generation digital New Technology Of Shortwave Communication, the anti-interference ability and ultra-high sensitive of receiver
Degree is a pair of technical indicator mutually restricted, how to obtain the equalization point of the two to play the synthesis of receiver to greatest extent
Performance becomes industry focus of attention.It is found that short wave broadband receiver faces following some technologies hardly possiblies due to big instant bandwidth
Topic:
1) biggish dynamic range is solved the problems, such as；
2) higher sensitivity is solved the problems, such as；
3) improve the problem of intermodulation product；
Solve the method for above-mentioned problem at present mainly include the following types:
1) multiband bandpass filter is used；
2) it is combined using multistage high-pass and low-pass filter；
3) power splitter is used；
Though method 1 and method 2 can improve the intermodulation product of receiver and obtain biggish dynamic range, pass through switch
Multichannel switching is realized in switching, and the instantaneous bandwidth of operation of receiver is limited to the bandwidth of filter.Method 3 can solve receiver wink
The problem of Time Bandwidth, however the loss of power splitter increases receiver noise factor, reduces the sensitivity of communication system.Above-mentioned three
Kind solution has significant technical disadvantages, and accordingly decreases receiver performance index.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
The present invention in view of the deficiencies of the prior art, and proposes a kind of constant-resistance shortwave multiplexer, can preselect in radiofrequency signal
When good low-loss is provided, low-down noise coefficient is provided, provides good band outer second order cut off, keeps good line
Property degree, and constant-resistance shortwave multiplexer public input port provide in radio-frequency region standing internal wave ratio less than 2, absorb radio frequency it is spuious
Interference.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of constant-resistance shortwave multiplexer, comprising:
Antenna port for the multiplexer to be connect with antenna；
For connecting 0 degree of phase shift module of two basic model output channels；
At least two output ports；
Two basic model output channels, each basic model output channel are connected to 0 degree between phase shift module and output port,
And including an output short wave filter and an impedance matching network；
At least two impedance matching networks, so that being absorbed into impedance matching by the out of band signal that output short wave filter reflects
In network, i.e., so that antenna port go out S11 in entire shortwave frequency range standing internal wave than constant less than 2, i.e., so that output shortwave filter
The out of band signal reflection of wave device reduces or eliminates.
Further, 0 degree of phase shift module is connected between antenna port and two basic model output channels, two bases
The input signal phase of this type output channel is identical, amplitude is equal.
Further, the basic model output channel is connected directly to 0 degree of phase shift module.
Further, the impedance matching network is connected between described two output channels so that this output channel with
Band external impedance between the output channel of connection is matched, i.e., so that the S11 standing-wave ratio at antenna port is constant less than 2.
Further, the impedance matching network have at least one parallel resonance branch and with the parallel resonance branch
Cascade series resonance branch individually connects inductance.
Further, the impedance matching network have at least one parallel resonance branch and with the parallel resonance branch
Cascade series resonance branch individually connects inductance, ground resistance.
Further, the output channel of the constant-resistance shortwave multiplexer includes two basic model output channels and at least 0
Common output channel.
Further, the S11 standing-wave ratio at the antenna port is constant less than 2 in radio-frequency region.
Further, wherein the multiplexer is four work of constant-resistance shortwave duplexer or constant-resistance shortwave triplexer or constant-resistance shortwave
Device or five work device of constant-resistance shortwave or six work device of constant-resistance shortwave or seven work device of constant-resistance shortwave or eight work device of constant-resistance shortwave or constant-resistance shortwave
Nine work devices or ten work device of constant-resistance shortwave or 12 work device of 11 work device of constant-resistance shortwave or constant-resistance shortwave.
Compared with prior art, the beneficial effects of the present invention are:
Beneficial effects of the present invention:
1) it can be realized the smallest insertion loss；
2) it can be realized the seamless coverage to shortwave frequency band signals, solve 30MHz instant bandwidth in Shortwave Communication System
With the contradiction between the parameters such as loss, anti-interference, intermodulation；
3) enable to the standing-wave ratio of public input port constant less than 2；
4) it can be realized the mutually indepedent of each interchannel debugging efforts, reduce debugging difficulty；
5) independence that can be realized each path modular peace loading, unloading, can adjust the number of channels of multiplexer at any time.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is constant-resistance shortwave multiplexer structural block diagram provided by the invention；
Fig. 2 is the circuit diagram of the first embodiment of the impedance matching module of constant-resistance shortwave multiplexer provided by the invention；
Fig. 3 is the circuit diagram of the second embodiment of the impedance matching module of constant-resistance shortwave multiplexer provided by the invention；
Fig. 4 is the circuit diagram of 0 degree of phase shift module of constant-resistance shortwave multiplexer provided by the invention；
Fig. 5 is the spectral response figure of the first embodiment of constant-resistance shortwave multiplexer provided by the invention；
Fig. 6 is the input impedance smith figure of the first embodiment of constant-resistance shortwave multiplexer provided by the invention；
Fig. 7 is the circuit diagram of the second embodiment of constant-resistance shortwave multiplexer provided by the invention；
Fig. 8 is the input impedance smith figure of the second embodiment of constant-resistance shortwave multiplexer provided by the invention；
Fig. 9 is the spectral response figure of the second embodiment of constant-resistance shortwave multiplexer provided by the invention.
In figure: 1. public input ports, 2.0 degree of phase shift modules, 3. third channels filter receiving module, the filter of 4. first passages
Wave receiving module, 5. third impedance matching modules, 6. first impedance matching modules, 7. third receiving ports, the filter of 8. fourth lanes
Wave receiving module, 9. the 4th receiving ports, 10. second channels filter receiving module, 11. second receiving ports, 12. second impedances
Matching module, 13. the 4th impedance matching modules, 14. first passage modules, 15. second channel modules, 16. third channel modules,
17. fourth lane module, 18. first receiving ports, 19. first inductance, 20. first capacitors, 21. third inductance, 22. second electricity
Hold, 23. first ground connection, 24. second inductance, 25. first input ends, 26. first lead-out terminals, 27. second input terminals,
28. the 4th inductance, 29. third capacitors, 30. the 5th inductance, 31. the 4th capacitors, 32. second ground connection, 33. the 6th inductance, 34. the
One resistance, 35. thirds ground connection, 36. the 9th inductance, 37. the 7th inductance, 38. the 8th inductance, 39. third input terminals, 40. the
Five capacitors, 41. the 6th capacitors, 42. second resistances, 43. second output terminals, 44. third output terminals, 45. the 7th capacitors,
46. the 8th capacitor, 47. Five-channels.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
A kind of constant-resistance shortwave multiplexer according to embodiments of the present invention, comprising:
Antenna port (ANT) for the multiplexer to be connect with antenna；
For connecting 0 degree of phase shift module (PS) of two basic model output channels；
At least two output port RxP；
Two basic model output channels, each basic model output channel (Bx) are connected to 0 degree of phase shift module (PS) and output
Between the RxP of port, and including an output short wave filter (FILTER) and an impedance matching network；
At least two impedance matching networks (DG), are configured and arranged to such form, i.e., so that by output shortwave
The out of band signal of filter (FILTER) reflection is absorbed into impedance matching network, i.e., so that the S11 that antenna port (ANT) goes out exists
Entire shortwave frequency range standing internal wave than constant less than 2, i.e., so that the out of band signal of output short wave filter (FILTER) reflects reduces
Or it eliminates.
In one particular embodiment of the present invention, wherein 0 degree of phase shift module (PS) is connected to antenna port (ANT)
Between two basic model output channels (Bx), i.e., so that the input signal phase of two basic model output channels (Bx) it is identical,
Amplitude is equal.
In one particular embodiment of the present invention, the basic model output channel (Bx) is connected directly to 0 degree of Xiang Yimo
Block (PS).
In one particular embodiment of the present invention, the impedance matching network (DG) is connected to described two output channels
Between, it constructs in this way, i.e., so that the band external impedance between this output channel and the output channel of connection is matched, i.e.,
So that the S11 standing-wave ratio at antenna port (ANT) is constant less than 2.
In one particular embodiment of the present invention, the impedance matching network (DG) has at least one parallel resonance branch
Road and with the cascade series resonance branch of the parallel resonance branch, individually connect inductance.
In one particular embodiment of the present invention, the impedance matching network (DG) has at least one parallel resonance branch
Road and with the cascade series resonance branch of the parallel resonance branch, individually connect inductance, ground resistance.
In one particular embodiment of the present invention, the output channel of the constant-resistance shortwave multiplexer includes two basic models
Output channel and at least 0 common output channel.
In one particular embodiment of the present invention, the S11 standing-wave ratio at the antenna port (ANT) is in radio-frequency region
It is constant less than 2.
In one particular embodiment of the present invention, wherein the multiplexer is constant-resistance shortwave duplexer or constant-resistance shortwave three
Work device or four work device of constant-resistance shortwave or five work device of constant-resistance shortwave or six work device of constant-resistance shortwave or seven work device of constant-resistance shortwave or constant-resistance are short
Eight work device of wave or nine work device of constant-resistance shortwave or ten work device of constant-resistance shortwave or 12 work device of 11 work device of constant-resistance shortwave or constant-resistance shortwave.
In order to facilitate understanding above-mentioned technical proposal of the invention, below by way of in specifically used mode to of the invention above-mentioned
Technical solution is described in detail.
When specifically used, a kind of constant-resistance shortwave multiplexer according to the present invention, Fig. 1 shows multiplexing provided by the invention
Device structural block diagram.As shown in Figure 1, the input port of 0 degree of phase shift module 2 is connected with public input port 1.First passage module 14
It is connected between 0 degree of phase shift module 2, the first receiving port 18 and second channel module 15.First passage module 14 be include
One channel filtering receiving module 4 and the first impedance matching module 6.Wherein, the first passage filtering of the first passage module 14
Receiving module 4 is connected between 0 degree of phase shift module 2 and the first receiving port 18；First impedance of the first passage module 14
Matching module 6 is connected between 0 degree of phase shift module 2 and second channel module 15.
Second channel module 15 be include second channel filtering receiving module 10 and the second impedance matching module 12.Wherein,
The second channel filtering receiving module 10 of the second channel module 15 is connected to the first impedance of the first passage module 14
Between matching module 6 and the second receiving port 11；Second impedance matching module 12 of the second channel module 15 is connected to institute
After the first impedance matching module 6 for stating first passage module 14.
Third channel module 16 be include third channel filtering receiving module 3 and third impedance matching module 5.Wherein, institute
The third channel filtering receiving module 3 for stating third channel module 16 is connected to 0 degree of phase shift module 2 and third receiving port 7
Between；The third impedance matching module 5 of the third channel module 16 is connected to 0 degree of phase shift module 2 and fourth lane mould
Between block 17.
Fourth lane module 17 be include fourth lane filtering receiving module 8 and the 4th impedance matching module 13.Wherein, institute
The fourth lane filtering receiving module 8 for stating fourth lane module 17 is connected to the third impedance matching of the third channel module 16
Between module 5 and the 4th receiving port 9；4th impedance matching module 13 of the fourth lane module 17 is connected to the third
After the third impedance matching module 5 of channel module 16.
In the embodiment of the present invention, the reception signal is filtered by 1,0 degree of phase shift module 2 of public input port, first passage
Wave receiving module 4 and the first receiving port 18 generate first via receiving path.The reception signal passes through public input port 1,0
It spends phase shift module 2, the first impedance matching module 6, second channel filtering receiving module 10 and the second receiving port 11 and generates second
Road receiving path.The reception signal by 1,0 degree phase shift module 2 of public input port, third channel filtering receiving module 3 and
Third receiving port 7 generates third road receiving path.The reception signal passes through 1,0 degree of phase shift module 2 of public input port, the
Three impedance matching modules 5, fourth lane filtering receiving module 8 and the 4th receiving port 9 generate the 4th tunnel receiving path.
In the embodiment of the present invention, 6 one end of the first impedance matching module is connected to 0 degree of phase shift module 2, the other end
Be connected to the second channel filtering receiving module 10 of the second channel module 15, for realizing the first passage module 14 with
The channels independence and isolation of second channel module 15, the circuit for changing the second channel module 15 do not influence described first
The performance of channel module 14.
In the embodiment of the present invention, 0 degree of phase shift module, 2 one end is connected to public input port 1, other two end interface
It is respectively connected to the first passage module 14, the third channel module 16, for reducing the insertion loss of multiplexer, and it is real
The working band of existing multiplexer is continuous.
In the embodiment of the present invention, 0 degree of phase shift module, 2 one end is connected to public input port 1, other two end interface
It is respectively connected to the first passage module 14, the third channel module 16, for reducing the insertion loss of multiplexer, and it is real
The working band of existing multiplexer is continuous.
The third channel filtering receiving module 3 can be the lumped wave filter of elliptic function response, be also possible to
The lumped wave filter of chebyshev function response.
The first passage filtering receiving module 4 can be the lumped wave filter of elliptic function response, be also possible to
The lumped wave filter of chebyshev function response.
The fourth lane filtering receiving module 8 can be the lumped wave filter of elliptic function response, be also possible to
The lumped wave filter of chebyshev function response.
The second channel filtering receiving module 10 can be the lumped wave filter of elliptic function response, be also possible to
The lumped wave filter of chebyshev function response.
Fig. 2 shows the circuit diagrams of the first embodiment of impedance matching module.As shown in Fig. 2, first impedance matching
The first input end 25 of module 6 is connected to the output end of 0 degree of phase shift module 2, the inductance value L19 of the first inductance 19, the first electricity
The capacitance C20 for holding 20 determines that fs is the centre frequency that first passage module 14 works, the connection of the second capacitor 22 as follows
To the first ground connection 23, the second inductance 24, third inductance 21, the second inductance are connected to after the first inductance 19 is in parallel with first capacitor 20
24 are connected to first lead-out terminal 26.
The inductance value L21 of third inductance 21, the second capacitor 22 capacitance C22 determine that fs is first logical as follows
The centre frequency that road module 14 works.
First lead-out terminal 26 is connected to second channel filtering receiving module 10 and the second resistance of second channel module 15
Anti- matching module 12.
Fig. 3 shows the circuit diagram of the second embodiment of impedance matching module.As shown in figure 3, second impedance matching
Second input terminal 27 of module 12 is connected to the first lead-out terminal 26 of the first impedance matching module 6, the 4th inductance 28 and
It is connected to the 5th inductance 30, the 6th inductance 33 after three capacitors, 29 parallel connection,
4th capacitor 31 is connected to the second ground connection 32, and the 6th inductance 33 is connected to 50 ohm of first resistor 34, and 50 ohm
First resistor 34 be connected to third ground connection 35.Second ground connection 32 is same the earth with third ground connection 35.
Fig. 4 is the circuit diagram of 0 degree of phase shift module of constant-resistance shortwave multiplexer provided by the invention.Third input terminal 39 connects
It is connected to public input port 1, second output terminal 43 is connected to the third channel module 16, and third output terminal 44 is connected to
The first passage module 14.0 degree of phase shift module 2 controls insertion loss, the 7th inductance the 37, the 8th by second resistance 42
Inductance 38, the 9th inductance 36, the 5th capacitor 40, the 6th capacitor 41, the 7th capacitor 45 and the 8th capacitor 46 control described 0 degree
The frequency response characteristic of phase shift module 2.
Fig. 5 shows the spectral response figure of the first embodiment of constant-resistance shortwave multiplexer.The first passage module 14
The lower frequency limit of working frequency is f1, and the upper limiting frequency of the working frequency of first passage module 14 is f4；The second channel mould
The lower frequency limit of the working frequency of block 15 is f3, and the upper limiting frequency of the working frequency of second channel module 15 is f7；The third
The lower frequency limit of the working frequency of channel module 16 is f2, and the upper limiting frequency of the working frequency of third channel module 16 is f6；Institute
The lower frequency limit for stating the working frequency of fourth lane module 17 is f5, and the upper limiting frequency of the working frequency of fourth lane module 17 is
f8.The frequency response characteristic in all channels is mellow and full, without burr.
Fig. 6 shows the input impedance smith figure of the first embodiment of constant-resistance shortwave multiplexer.At public input port 1
Input impedance smith figure.
Fig. 7 shows the circuit diagram of the second embodiment of constant-resistance shortwave multiplexer.Different from embodiment shown in FIG. 1,
47 no resistance matching module of Five-channel.
Fig. 8 shows the input impedance smith figure of the second embodiment of constant-resistance shortwave multiplexer.Different from shown in fig. 6
Embodiment, 47 no resistance matching module of Five-channel, the input impedance smith at the public input port 1 of second embodiment
Scheme the input impedance smith at the public input port 1 of the first embodiment and schemes diverging.
Fig. 9 shows the spectral response figure of the second embodiment of constant-resistance shortwave multiplexer.47 no resistance of Five-channel
The frequency response characteristic of matching module, channel is influenced by the filter module of Five-channel 47, and passband edge occurs big
Amplitude wave is dynamic.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of constant-resistance shortwave multiplexer characterized by comprising
Antenna port for the multiplexer to be connect with antenna；
For connecting 0 degree of phase shift module of two basic model output channels；
At least two output ports；
Two basic model output channels, each basic model output channel are connected to 0 degree between phase shift module and output port, each
Basic model output channel includes an output short wave filter；
At least two impedance matching networks, so that being absorbed into impedance matching network by the out of band signal that output short wave filter reflects
In, antenna port go out S11 in entire shortwave frequency range standing internal wave than constant less than 2, the out of band signal for exporting short wave filter is anti-
It penetrates and reduces or eliminates.
2. constant-resistance shortwave multiplexer according to claim 1, it is characterised in that: 0 degree of phase shift module is connected to antenna
Between port and two basic model output channels, the input signal phase of two basic model output channels is identical, amplitude is equal.
3. constant-resistance shortwave multiplexer according to claim 1, it is characterised in that: the basic model output channel is directly connected to
To 0 degree of phase shift module.
4. constant-resistance shortwave multiplexer according to claim 1, it is characterised in that: the impedance matching network is connected to described
Between two output channels so that the band external impedance between this output channel and the output channel of connection is matched, i.e., so that
S11 standing-wave ratio at antenna port is constant less than 2.
5. constant-resistance shortwave multiplexer according to claim 4, it is characterised in that: the impedance matching network has at least one
A parallel resonance branch and with the cascade series resonance branch of the parallel resonance branch, individually connect inductance.
6. constant-resistance shortwave multiplexer according to claim 5, it is characterised in that: the impedance matching network has at least one
A parallel resonance branch and with the cascade series resonance branch of the parallel resonance branch, individually connect inductance, ground resistance.
7. constant-resistance shortwave multiplexer according to claim 6, it is characterised in that: the output of the constant-resistance shortwave multiplexer is logical
Road includes two basic model output channels and at least 0 common output channel.
8. constant-resistance shortwave multiplexer according to claim 7, it is characterised in that: the S11 standing-wave ratio at the antenna port
It is constant less than 2 in radio-frequency region.
9. the constant-resistance shortwave multiplexer according to any one of the claims 1-8, it is characterised in that: the wherein multiplexing
Device is one of following: constant-resistance shortwave duplexer, constant-resistance shortwave triplexer, four work device of constant-resistance shortwave, five work device of constant-resistance shortwave,
Six work device of constant-resistance shortwave, seven work device of constant-resistance shortwave, eight work device of constant-resistance shortwave, nine work device of constant-resistance shortwave, ten work device of constant-resistance shortwave, perseverance
Hinder 11 work device of shortwave, 12 work device of constant-resistance shortwave.
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| CN111106811A (en) * | 2019-12-23 | 2020-05-05 | 同方电子科技有限公司 | Double-end constant-resistance filtering component |
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| WO2018212025A1 (en) * | 2017-05-16 | 2018-11-22 | 株式会社村田製作所 | Multiplexer, transmission device and reception device |
| CN109120239A (en) * | 2017-06-23 | 2019-01-01 | 株式会社村田制作所 | Multiplexer, sending device and reception device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106811A (en) * | 2019-12-23 | 2020-05-05 | 同方电子科技有限公司 | Double-end constant-resistance filtering component |
| CN111106811B (en) * | 2019-12-23 | 2023-09-19 | 同方电子科技有限公司 | Double-end constant-resistance filtering assembly |
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