CN206313134U - Multiport double-frequency broadband feeding network - Google Patents
Multiport double-frequency broadband feeding network Download PDFInfo
- Publication number
- CN206313134U CN206313134U CN201621465061.6U CN201621465061U CN206313134U CN 206313134 U CN206313134 U CN 206313134U CN 201621465061 U CN201621465061 U CN 201621465061U CN 206313134 U CN206313134 U CN 206313134U
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- China
- Prior art keywords
- double
- port
- transmission line
- coupler
- frequency
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The utility model discloses a kind of multiport double-frequency broadband feeding network, including coaxial connector, first port, second port, the 3rd port, the 4th port, the first double frequency coupler and the second double frequency coupler.The holding wire of coaxial connector connects the input of the first double frequency coupler, and the ground wire of coaxial connector is connected to the input of the second double frequency coupler；The straight-through end of the first double frequency coupler connects the input of first port, and the coupled end of the first double frequency coupler connects the input of second port, the isolation end connection first resistor of the first double frequency coupler；The straight-through end of the second double frequency coupler connects the input of the 4th port, and the coupled end of the second double frequency coupler connects the input of the 3rd port, the isolation end connection second resistance of the second double frequency coupler.The utility model can realize the miniaturization of feeding network, can realize 90 ° of phase shift between adjacent output port again, can both realize the dual frequency characteristics of feeding network, can also realize broadband character.
Description
Technical field
The utility model is related to technical field of satellite communication, more particularly to a kind of multiport double-frequency broadband feeding network.
Background technology
In recent years, with satellite navigation, the fast development of satellite communication and extensive use, circular polarized antenna or array antenna
Used as the headend equipment of these systems, the quality of its performance indications sets for satellite communication hand-held terminal and radio frequency identification Card Reader
Standby performance plays an important role.In addition, being pushed away for the ease of satellite communication terminal and the extensive of radio-frequency recognition system
Wide application, the financial cost and volume size of system all it is critical that Consideration, as the entelechy of wherein important component
Change antenna, on the premise of superior performance index is ensured, it is necessary to the characteristics of possessing with low cost, compact conformation and compact.
When being fed to circular polarized antenna or array antenna, it is necessary to be designed to feeding network.Due to present communication system
It is required for multifrequency, broadband, miniaturization.And existing feeding network is bulky, is unfavorable for satellite antenna radio-frequency front-end
It is integrated.And single frequency is operated in mostly, it is unfavorable for being worked under multifrequency or broadband condition.
Utility model content
Main purpose of the present utility model provides a kind of multiport double-frequency broadband feeding network, it is intended to solve existing feed
Network is bulky, is unfavorable for the integrated of satellite antenna radio-frequency front-end, and is operated in single frequency mostly, is unfavorable in multifrequency
Or the technical problem worked under broadband condition.
To achieve the above object, the utility model provides a kind of multiport double-frequency broadband feeding network, including coaxially connects
Device, first port, second port, the 3rd port, the 4th port, the first double frequency coupler and the second double frequency coupler are connect, wherein：
The holding wire of coaxial connector is connected to the input of the first double frequency coupler, and the ground wire of coaxial connector is connected to
The input of the second double frequency coupler；
The straight-through end of the first double frequency coupler is connected to the input of first port, and the coupled end of the first double frequency coupler connects
The input of second port is connected to, the isolation end of the first double frequency coupler is connected to first resistor；
The straight-through end of the second double frequency coupler is connected to the input of the 4th port, and the coupled end of the second double frequency coupler connects
The input of the 3rd port is connected to, the isolation end of the second double frequency coupler is connected to second resistance；
First double frequency coupler and the second double frequency coupler include four double minor matters impedance matching boxs and a branch line
Coupler, four union ends of the branch line coupler are correspondingly connected on four double minor matters impedance matching boxs.
Preferably, the coaxial connector, first port, second port, the impedance of the 3rd port and the 4th port is
50Ω。
Preferably, the resistance value of the first resistor and second resistance is 50 Ω.
Preferably, each described pair of minor matters impedance matching box includes transmission line Z1 and transmission line Z2, the transmission line Z1
Concatenated with transmission line Z2.
Preferably, the impedance of the transmission line Z1 is 85 Ω, and the impedance of the transmission line Z2 is 62 Ω.
Preferably, the branch line coupler include two section transmission line Z3 and two section transmission line Z4, the transmission line Z3 and
Transmission line Z4 is alternately concatenated into cyclic structure.
Preferably, the impedance of the transmission line Z3 is 24 Ω, and the impedance of the transmission line Z4 is 33 Ω.
Compared to prior art, multiport double-frequency broadband feeding network described in the utility model uses above-mentioned technical proposal,
Following technique effect is reached：Two double frequency couplers are fed using the holding wire and ground wire of coaxial connector, four
90 ° of phase shift is realized between the adjacent port of individual output port.By the Reasonable Arrangement to coupler, the small-sized of feeding network is realized
Change.Furthermore, it is possible to the dual frequency characteristics of feeding network are realized in the impedance matching for adjusting double frequency coupler, if two frequency bins are suffered must compare
It is nearer, it is possible to achieve the broadband character of feeding network.
Brief description of the drawings
Fig. 1 is the electrical block diagram of the utility model multiport double-frequency broadband feeding network preferred embodiment；
Fig. 2 is the S parameter simulation result schematic diagram of the utility model multiport double-frequency broadband feeding network；
Fig. 3 is the phase difference simulation result schematic diagram of the utility model multiport double-frequency broadband feeding network.
The utility model purpose is realized, functional characteristics and advantage will in conjunction with the embodiments, will be in specific embodiment part one
And be described further referring to the drawings.
Specific embodiment
Further to illustrate that the utility model is to reach technological means and effect that above-mentioned purpose is taken, below in conjunction with
Accompanying drawing and preferred embodiment, are described in detail to specific embodiment of the present utility model, structure, feature and its effect.Should
Work as understanding, specific embodiment described herein is only used to explain the utility model, be not used to limit the utility model.
Shown in reference picture 1, Fig. 1 is the circuit structure of the utility model multiport double-frequency broadband feeding network preferred embodiment
Schematic diagram.In the present embodiment, the multiport double-frequency broadband feeding network is integrated on pcb board, including coaxial connector P0,
First port P1, second port P2, the 3rd port P3, the 4th port P4, the first double frequency coupler 1 and the second double frequency coupler 2.
The coaxial connector P0 is that an impedance value is the coaxial connector of 50 Ω (ohm), used as the input of coaxial feed.Together
The holding wire of mandrel connector P0 is connected to the input of the first double frequency coupler 1, and the ground wire of coaxial connector P0 is connected to second
The input of double frequency coupler 2.Wherein：The straight-through end of the first double frequency coupler 1 is connected to first port P1, the coupling of the first double frequency
The coupled end of device 1 is connected to second port P2, the isolation end of the first double frequency coupler 1 and is connected to first resistor R1.Second double frequency
The straight-through end of coupler 2 is connected to the 4th port P4, the coupled end of the second double frequency coupler 2 and is connected to the 3rd port P3, second
The isolation end of double frequency coupler 2 is connected to second resistance R2.The resistance value of the first resistor R1 and second resistance R2 is preferred
It is 50 Ω, the coaxial connector P0, coaxial connector P0, first port P1, second port P2, the 3rd port P3 and the 4th end
The impedance of mouth P4 is both preferably 50 Ω.
The first double frequency coupler 1 and the second double frequency coupler 2 include four double minor matters impedance matching boxs 11 and
Individual branch line coupler 12, four union ends of the branch line coupler 12 are correspondingly connected to four double minor matters impedance matching boxs
On 11, i.e., a union end of branch line coupler 12 connects a double minor matters impedance matching box 11.Each double minor matters impedance
Adaptation 11 includes that a section transmission line Z1 and saves transmission line Z2, and wherein transmission line Z1 is concatenated with transmission line Z2.The branch line
Coupler 12 includes that two section transmission line Z3 and two section transmission line Z4, the two section transmission line Z3 and two section transmission line Z4 are alternately concatenated
Circlewise structure.In the present embodiment, the impedance of the transmission line Z1 is preferably 85 Ω, and the impedance of transmission line Z2 is preferably 62
The impedance of Ω, transmission line Z3 is preferably 24 Ω, and the impedance of transmission line Z4 is preferably 33 Ω.The transmission line Z1, transmission line
The impedance of Z2, transmission line Z3 and transmission line Z4 can also use other suitable impedance values.
In the present embodiment, the first double frequency coupler 1 and the second double frequency coupler 2 are by 12 section transmission line groups
Into the electrical length of each section transmission line composition is 1/4 wavelength, i.e., described transmission line Z1, transmission line Z2, transmission line Z3 and transmission
The electrical length of line Z4 is all 1/4 wavelength.Four union ends of the branch line coupler 12 are connected to four double minor matters impedances
Adaptation 11, can on both frequencies realize that impedance is converted.If the two frequency intervals are far (be such as equal to or more than
1GHz), the first double frequency coupler 1 and the second double frequency coupler 2 realize dual frequency characteristics, if the close (example of the two frequency intervals
Such as less than 200MHz), the first double frequency coupler 1 and the second double frequency coupler 2 realize broadband character.
With reference to shown in Fig. 1, the coaxial feed holding wire (being assumed to be 0 ° of signal phase shift) of coaxial connector P0 is connected to
On one double frequency coupler 1, it is possible to achieve the phase shift that 90 ° of signal, i.e. coaxial connector P0 exports 0 ° of signal phase shift, second port
P2 exports -90 ° of signal phase shift, and the ground wire of the coaxial feed of coaxial connector P0 is now equivalent to -180 ° of signal phase shift.
After coaxial connector P0 is connected to the second double frequency coupler 2 by the ground wire of coaxial feed, it is also possible to realize that 90 ° of signal is moved
Phase, i.e. the 3rd port P3 export -180 ° of signal phase shift, and port P5 exports -270 ° of signal phase shift.Therefore, multiport double frequency
Broadband feeding network can be sequentially output 0 °, -90 °, -180 ° and -270 ° of constant-amplitude signal.
With reference to shown in Fig. 2, Fig. 2 is that the S parameter simulation result of the utility model multiport double-frequency broadband feeding network is illustrated
Figure.Figure it is seen that in 1.75GHz to 2.35GHz, the reflectance factor of coaxial connector P0 | S00| below -10dB,
Illustrating the relative bandwidth of multiport double-frequency broadband feeding network can reach 39%, realize the broadband character of feeding network.When
Signal energy that four output ports relative to coaxial connector P0 are obtained (in Fig. 2 | S10|、|S20|、|S30|、|S40|)
Near -6dB, illustrate that signal energy can be similar to being assigned in four output ends of the quartering from coaxial connector P0,
I.e. signal energy can be equally distributed over first port P1, second port P2, the 3rd port P3 and from coaxial connector P0
Four port P4.
With reference to shown in Fig. 3, Fig. 3 is that the phase difference simulation result of the utility model multiport double-frequency broadband feeding network is illustrated
Figure.From figure 3, it can be seen that the phase difference between multiport double-frequency broadband feeding network adjacent port is basically stable at 90 ° of phase shifts
Near, there is excellent Phasing between four output ends of this explanation multiport double-frequency broadband feeding network.With reference to Fig. 2 institutes
Show, because the signal energy between four ports (first port P1, second port P2, the 3rd port P3 and the 4th port P4) is
Constant amplitude, phase differs 90 ° of phase shifts successively, therefore the multiport double-frequency broadband feeding network can be widely used in circular polarisation day
On the feed of line, such as circular polarized antenna array or four-arm spiral antenna can be applied in needing one point four in RF application
On the radio-frequency devices of work(point effect.
The utility model proposes multiport double-frequency broadband feeding network using coaxial connector P0 holding wire and ground wire
Two double frequency couplers are fed, 90 ° are realized between the adjacent port of four output ports (port P1, P2, P3 and P4)
Phase shift.By the Reasonable Arrangement to double frequency coupler, the miniaturization of feeding network is realized.Multiport described in the utility model is double
Another advantage of frequency range with feeding network is to realize dual frequency characteristics by the impedance matching of double frequency coupler, if two
Frequency suffers closer, it is possible to achieve broadband character.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every
Equivalent structure or the equivalent function conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (7)
1. a kind of multiport double-frequency broadband feeding network, it is characterised in that described multiport double-frequency broadband feeding network includes
The coupling of coaxial connector, first port, second port, the 3rd port, the 4th port, the first double frequency coupler and the second double frequency
Device, wherein：
The holding wire of coaxial connector is connected to the input of the first double frequency coupler, and the ground wire of coaxial connector is connected to second
The input of double frequency coupler；
The straight-through end of the first double frequency coupler is connected to the input of first port, and the coupled end of the first double frequency coupler is connected to
The input of second port, the isolation end of the first double frequency coupler is connected to first resistor；
The straight-through end of the second double frequency coupler is connected to the input of the 4th port, and the coupled end of the second double frequency coupler is connected to
The input of the 3rd port, the isolation end of the second double frequency coupler is connected to second resistance；
First double frequency coupler and the second double frequency coupler include four double minor matters impedance matching boxs and a branch line coupling
Device, four union ends of the branch line coupler are correspondingly connected on four double minor matters impedance matching boxs.
2. multiport double-frequency broadband feeding network as claimed in claim 1, it is characterised in that the coaxial connector, first
Port, second port, the impedance of the 3rd port and the 4th port are 50 Ω.
3. multiport double-frequency broadband feeding network as claimed in claim 1, it is characterised in that the first resistor and the second electricity
The resistance value of resistance is 50 Ω.
4. multiport double-frequency broadband feeding network as claimed in claim 1, it is characterised in that each described pair of minor matters impedance
Adaptation includes that transmission line Z1 and transmission line Z2, the transmission line Z1 are concatenated with transmission line Z2.
5. multiport double-frequency broadband feeding network as claimed in claim 4, it is characterised in that the impedance of the transmission line Z1 is
The impedance of 85 Ω, the transmission line Z2 is 62 Ω.
6. multiport double-frequency broadband feeding network as claimed in claim 1, it is characterised in that the branch line coupler includes
Two section transmission line Z3 and two section transmission line Z4, the transmission line Z3 and transmission line Z4 are alternately concatenated into cyclic structure.
7. multiport double-frequency broadband feeding network as claimed in claim 6, it is characterised in that the impedance of the transmission line Z3 is
The impedance of 24 Ω, the transmission line Z4 is 33 Ω.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465061.6U CN206313134U (en) | 2016-12-29 | 2016-12-29 | Multiport double-frequency broadband feeding network |
| PCT/CN2017/084465 WO2018120595A1 (en) | 2016-12-29 | 2017-05-16 | Multiport dual-frequency broadband feed network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465061.6U CN206313134U (en) | 2016-12-29 | 2016-12-29 | Multiport double-frequency broadband feeding network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206313134U true CN206313134U (en) | 2017-07-07 |
Family
ID=59247586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621465061.6U Expired - Fee Related CN206313134U (en) | 2016-12-29 | 2016-12-29 | Multiport double-frequency broadband feeding network |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206313134U (en) |
| WO (1) | WO2018120595A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681241A (en) * | 2017-11-22 | 2018-02-09 | 福州同创微波通讯技术有限公司 | A kind of two-way cavity coupler and method of work having with frequency combining function |
| WO2018120596A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Quadrifilar helical antenna having dual-frequency broadband function |
| WO2018120593A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Dual-frequency, broadband, circularly polarized patch antenna |
| WO2018121152A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Circularly polarized antenna having dual-frequency broadband function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490733B (en) * | 2013-09-26 | 2016-06-08 | 华东交通大学 | A kind of Double-frequency-banDoherty Doherty power amplifier of frequency ratio 1.25 to 2.85 |
| US20150137885A1 (en) * | 2013-11-18 | 2015-05-21 | Auriga Measurement Systems, LLC | Dual path rf amplifier circuit |
| CN106129571B (en) * | 2016-08-25 | 2020-01-10 | 电子科技大学 | Double-frequency branch line coupler |
-
2016
- 2016-12-29 CN CN201621465061.6U patent/CN206313134U/en not_active Expired - Fee Related
-
2017
- 2017-05-16 WO PCT/CN2017/084465 patent/WO2018120595A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018120596A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Quadrifilar helical antenna having dual-frequency broadband function |
| WO2018120593A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Dual-frequency, broadband, circularly polarized patch antenna |
| WO2018121152A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳市景程信息科技有限公司 | Circularly polarized antenna having dual-frequency broadband function |
| CN107681241A (en) * | 2017-11-22 | 2018-02-09 | 福州同创微波通讯技术有限公司 | A kind of two-way cavity coupler and method of work having with frequency combining function |
| CN107681241B (en) * | 2017-11-22 | 2023-11-03 | 福州同创微波通讯技术有限公司 | Double-channel cavity coupler with same-frequency combining function |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018120595A1 (en) | 2018-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20211229 |