CN208315768U - A kind of broadband circular polarizer - Google Patents
A kind of broadband circular polarizer Download PDFInfo
- Publication number
- CN208315768U CN208315768U CN201821064008.4U CN201821064008U CN208315768U CN 208315768 U CN208315768 U CN 208315768U CN 201821064008 U CN201821064008 U CN 201821064008U CN 208315768 U CN208315768 U CN 208315768U
- Authority
- CN
- China
- Prior art keywords
- waveguide
- phase shifters
- turnsile
- face
- waveguide phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The utility model discloses a kind of broadband circular polarizers, belong to technical field of satellite communication.It includes two turnsile connectors, 90 ° of face E waveguide bend is respectively connected at each rectangular waveguide port, it is connected respectively by a waveguide phase shifter between 90 ° of the corresponding face E in the every two position waveguide bend on two turnsile connectors, with the 45 ° of waveguide phase shifters or with being negative 45 ° of waveguide phase shifters of being positive, two waveguide phase shifters at ortho position are positive 45 ° of waveguide phase shifters and minus 45 ° of waveguide phase shifters two waveguide phase shifters of contraposition respectively.The utility model uses broadband turnsile connector and broadband ± 45 ° waveguide phase shifter, be more than 33% bandwidth in make phase difference ± 90 ° of two cross polarization modes,, excellent electrical properties wide with working band, structure are simple, exempt from debugging, high reliablity, feature suitable for mass production.
Description
Technical field
The utility model discloses a kind of broadband circular polarizers, it is related to satellite communication and radio astronomy antenna technology neck
Domain, the feeding network system suitable for satellite communication and radio astronomy antenna.
Background technique
In fields such as satellite communication, radio astronomies, circular polarized antenna is widely used.Circular polarizer is used to line
Polarized signal is converted into circularly polarized signal, is the important component in circular polarized antenna.As communication technology of satellite and the next generation are penetrated
The development of electric astronomical telescope technology, the demand of broadband operation are more more and more urgent.Therefore, broadband circular polarizer technology is wide
One of key technology with circular polarisation reflecting plane aerial feed source.
Circular polarizer is the main component for determining antenna circular polarisation performance, and waveguide circular polarizer is in circular polarisation reflector antenna
It is widely adopted in feed system.Common waveguide circular polarizer pattern have screw adjustment type, medium insert type, ripple type, every
Template and ridge waveguide etc..Circular waveguide screw polarizer is that two rows of screws, screw circular polarisation are symmetrically inserted into circular waveguide tube wall
The cost of device is low, form is simple, insertion loss is small but debugging work load is big, and bandwidth is within 15%.Medium insert type polarizer
It is that dieelctric sheet is inserted into circular waveguide, the debugging of medium inserted sheet polarizer is simple, but dielectric loss is larger, and bandwidth is within 25%.Wave
Line type circular polarizer is that metal-loaded diaphragm is as phase-shifting unit in circular waveguide or square wave guide, and relative bandwidth can reach 35%, hardly possible
Point mainly requires height to the machining accuracy and symmetry of ripple, needs to increase debugging screw fine tuning phase.Ridge waveguide circular polarisation
Device is to load ridge piece in waveguide axial direction, and bandwidth characteristic is good, but length is longer.
Utility model content
The purpose of this utility model is that avoiding the shortcoming in above-mentioned background technique and providing a kind of broadband entelechy
Change device, length is shorter, small volume, structure is simple, processing cost is low, exempts to debug, it can flexibly scale for L to Ka wave band,
It can satisfy satellite communication, radio astronomy and broadband and scout the wide band applications of antennas such as reception.
To achieve the goals above, the technical scheme adopted by the utility model is
A kind of broadband circular polarizer comprising the turnsile connector of two faces, the public affairs of two turnsile connectors
Port is away from one another altogether, and each turnsile connector all has four rectangular waveguide ports, connects at each rectangular waveguide port
It is connected to 90 ° of face E waveguide bend, respectively between 90 ° of the corresponding face E in the every two position waveguide bend on two turnsile connectors
It is connected by a waveguide phase shifter, two waveguide phase shifters of contraposition are the same as 45 ° of waveguide phase shifters or the same 45 ° of waveguides that are negative of being positive
Phase shifter, two waveguide phase shifters at ortho position are positive 45 ° of waveguide phase shifters and minus 45 ° of waveguide phase shifters respectively.
Optionally, the turnsile connector includes scattering matching unit and common waveguide, scatters the center of matching unit
It is overlapped with the center of common waveguide, scattering matching unit is located in the inner chamber bottom surface of turnsile connector.
Optionally, the waveguide phase shifter includes rectangular wave guide cavity, wherein the rectangular wave guide cavity of minus 45 ° of waveguide phase shifters
Interior to be equipped with the face E metallic membrane, the rectangular waveguide of positive 45 ° of waveguide phase shifters is intracavitary to be equipped with the face H metallic membrane.
Optionally, 90 ° of the face E waveguide bend is corner cut waveguide bend or circular arc waveguide bend.
Optionally, the scattering matching unit of the turnsile connector is single cylinder, square column or rotary table.
Optionally, the scattering matching unit of the turnsile connector is hierarchic structure, every level-one of the hierarchic structure
It is cylinder, square column or rotary table.
Optionally, the common waveguide of the turnsile connector is circular waveguide or square wave guide.
The utility model has the advantages that compared with the background art
1, the utility model is non-using broadband turnsile connector, ± 45 ° of waveguide phase shifters and 90 ° of the face E waveguide bend, structure
It is often simple.Wherein, turnsile connector is the Wide-Band Design, and the phase difference by adjusting ± 45 ° of waveguide phase shifters is 90 °, can be with
Realize the function of circular polarizer.
2, the bandwidth of the utility model is more than current most of circular polarizer bandwidth, and exempts to debug, high reliablity, is suitble to criticize
Amount production.
3, the utility model has relatively small size, can be not only used for L-band, can be used for Ka wave band.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of broadband circular polarizer in the utility model embodiment.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural schematic diagram of A-A section in Fig. 2.
Fig. 4 is the structural schematic diagram of B-B section in Fig. 2.
Fig. 5 is two polarized transmission phase differences of the utility model embodiment.
Fig. 6 is the Circular polarization ratio of the utility model embodiment.
Fig. 7 is the horizontal polarization reflection loss of the utility model embodiment.
Fig. 8 is the vertical polarization reflection loss of the utility model embodiment.
In figure: 1-1, the first turnsile connector, 1-2, the second turnsile connector, 2-1, the first -45 ° waveguide phase shifts
Device, 2-2, the second -45 ° waveguide phase shifters, 3-1, the first+45 ° waveguide phase shifters, 3-2, the second+45 ° waveguide phase shifters, 4-1,
First 90 ° of the face E waveguide bend, 4-2,90 ° of the 2nd face E waveguide bend, 4-3,90 ° of the 3rd face E waveguide bend, 4-4, the curved wave in 90 ° of the 4th face E
It leads, 4-5,90 ° of the 5th face E waveguide bend, 4-6,90 ° of the 6th face E waveguide bend, 4-7,90 ° of the 7th face E waveguide bend, 4-8, the 8th face E
90 ° of waveguide bends, the scattering matching unit of 5-1, the first turnsile connector, the scattering of 5-2, the second turnsile connector match single
Member, 6-1, the first common waveguide, 6-2, the second common waveguide, the rectangular wave guide cavity of 7, -45 ° of waveguide phase shifters, 8, the face E metal film
Piece, the rectangular wave guide cavity of 9 ,+45 ° of waveguide phase shifters, 10, the face H metallic membrane.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is further explained in more detail.
A kind of broadband circular polarizer comprising the turnsile connector of two faces, the public affairs of two turnsile connectors
Port is away from one another altogether, and each turnsile connector all has four rectangular waveguide ports, connects at each rectangular waveguide port
It is connected to 90 ° of face E waveguide bend, respectively between 90 ° of the corresponding face E in the every two position waveguide bend on two turnsile connectors
It is connected by a waveguide phase shifter, two waveguide phase shifters of contraposition are the same as 45 ° of waveguide phase shifters or the same 45 ° of waveguides that are negative of being positive
Phase shifter, two waveguide phase shifters at ortho position are positive 45 ° of waveguide phase shifters and minus 45 ° of waveguide phase shifters respectively.
Optionally, the turnsile connector includes scattering matching unit and common waveguide, scatters the center of matching unit
It is overlapped with the center of common waveguide, scattering matching unit is located in the inner chamber bottom surface of turnsile connector.
Optionally, the waveguide phase shifter includes rectangular wave guide cavity, wherein the rectangular wave guide cavity of minus 45 ° of waveguide phase shifters
Interior to be equipped with the face E metallic membrane, the rectangular waveguide of positive 45 ° of waveguide phase shifters is intracavitary to be equipped with the face H metallic membrane.
Optionally, 90 ° of the face E waveguide bend is corner cut waveguide bend or circular arc waveguide bend.
Optionally, the scattering matching unit of the turnsile connector is single cylinder, square column or rotary table.
Optionally, the scattering matching unit of the turnsile connector is hierarchic structure, every level-one of the hierarchic structure
It is cylinder, square column or rotary table.
Optionally, the common waveguide of the turnsile connector is circular waveguide or square wave guide.
Specifically, referring to Fig. 1~4, a kind of broadband circular polarizer comprising the first turnsile connector 1-1, second
Turnsile connector 1-2, the first -45 ° waveguide phase shifter 2-1, the second -45 ° waveguide phase shifter 2-2, the first+45 ° waveguide phase shifts
Device 3-1, the second+45 ° waveguide phase shifter 3-2,90 ° of the first face E waveguide bend 4-1,90 ° of the 2nd face E waveguide bend 4-2, the 3rd face E
90 ° of waveguide bend 4-3,90 ° of the 4th face E waveguide bend 4-4,90 ° of the 5th face E waveguide bend 4-5,90 ° of the 6th face E waveguide bend 4-6, the 7th
90 ° of the face E waveguide bend 4-7,90 ° of the 8th face E waveguide bend 4-8.
Wherein, four rectangular waveguide ports of the first turnsile connector 1-1 are separately connected the first, second, third and fourth face E
The a port of 90 ° of waveguide bends, another port of the first, second, third and fourth 90 ° of the face E waveguide bend is in order respectively with first-
45 ° of rectangular waveguide phase shifter 2-1, the first+45 ° rectangular waveguide phase shifter 3-1, the second -45 ° rectangular waveguide phase shifter 2-2, second
The a port of+45 ° of rectangular waveguide phase shifters connects 3-2, the first -45 ° rectangular waveguide phase shifter 2-1, the first+45 ° rectangular waves
Lead another port of phase shifter 3-1, the second -45 ° rectangular waveguide phase shifter 2-2, the second+45 ° rectangular waveguide phase shifter 3-2
Connect with a port of the five, the six, seven, the eight 90 ° of waveguide bends in the face E, the five, the six, seven, eight 90 ° of the face E waveguide bends another
Port is connect with four rectangular ports of the second turnsile connector 1-2 respectively.
In use, two cross polarizations are by the first turnsile connector 1-1(or the second turnsile connector 1-2) it is defeated
Enter, generate 90 ° of phase differences by -45 ° of rectangular waveguide phase shifter 2-1,2-2 and+45 ° of rectangular waveguide phase shifters 3-1,3-2 respectively,
In the second turnsile connector 1-2(or the first turnsile connector 1-1) common waveguide in synthesize circular polarisation.
Scattering matching unit 5-1,5-2 of the first turnsile connector 1-1 and the second turnsile connector 1-2
It can be single cylinder, square column or rotary table, be also possible to be formed by multi-stage stairs by cylinder, square column or rotary table.
Common waveguide 6-1,6-2 of the first turnsile connector 1-1 and the second turnsile connector 1-2 can be with
It is circular waveguide, is also possible to square wave guide.
The first turnsile connector 1-1 and the second turnsile connector 1-2 can be used and be integrally machined forming,
Using screw connection after wave-guide cavity wave part and scattering matching unit being processed respectively.
- 45 ° of described rectangular waveguide phase shifters 2-1, the 2-2 include rectangular wave guide cavity 7 and the face E metallic membrane 8.
+ 45 ° of described rectangular waveguide phase shifters 3-1, the 3-2 include rectangular wave guide cavity 9 and the face H metallic membrane 10.
90 ° of the face the E waveguide bend can be corner cut waveguide bend, be also possible to circular arc waveguide bend.
The electric transmission performance of above-mentioned broadband circular polarizer is verified, it is as follows to obtain experimental data:
Fig. 5 gives the phase difference of two orthogonally polarized waves in frequency band, it can be seen that in 33.3% bandwidth, phase difference
Meet 90 ° ± 5 °.
Fig. 6 gives the corresponding Circular polarization ratio in frequency band, it can be seen that in 33.3% bandwidth, axis ratio < 1dB.
Fig. 7 gives the reflection loss of the vertical polarization in frequency band, it can be seen that in 33.3% bandwidth, vertical polarization
Reflection loss < -19dB.
Fig. 8 gives the reflection loss of the horizontal polarization in frequency band, it can be seen that in 33.3% bandwidth, horizontal polarization
Reflection loss < -20dB.
The brief working principle of the utility model is as follows:
Line polarization wave can be analyzed to two constant amplitudes with the line polarization wave of phase；Circularly polarised wave is decomposed into that two amplitudes are equal, phase
The line polarization wave that potential difference is 90 °.When the line polarization wave rectangular waveguide phase shifter at 45 ° angle orthogonal with two of circular polarizer, by
First turnsile connector (or second turnsile connector) input can be analyzed to two constant amplitudes with the line polarization wave of phase, respectively
By generating 90 ° of phase differences after -45 ° of rectangular waveguide phase shifters and+45 ° of rectangular waveguide phase shifters, in the second turnsile connector
It is synthesized in the common waveguide of (or first turnsile connector), forms circular polarisation.
In short, the utility model uses broadband turnsile connector and broadband ± 45 ° waveguide phase shifter, it is being more than 33%
Make phase difference ± 90 ° of two cross polarization modes in bandwidth, wide, excellent electrical properties, structure are simple with working band, exempt from
Debugging, high reliablity, feature suitable for mass production.
It should be pointed out that the above specific embodiment is the specific case of this patent implementation, without also can not
All implementations of this patent can be covered, therefore the restriction to the scope of this patent cannot be regarded as；All and above case
Belong to the implementation of same idea or the assembled scheme of above-mentioned several schemes, within the protection domain of this patent..
Claims (7)
1. a kind of broadband circular polarizer, it is characterised in that: the turnsile connector including two faces, two turnsiles connect
The public port of head is away from one another, and each turnsile connector all has four rectangular waveguide ports, each rectangular waveguide port
Place is respectively connected with 90 ° of face E waveguide bend, respectively the curved wave in 90 ° of the corresponding face E in the every two position on two turnsile connectors
It is connected by a waveguide phase shifter between leading, two waveguide phase shifters of contraposition are the same as the 45 ° of waveguide phase shifters or with being negative of being positive
45 ° of waveguide phase shifters, two waveguide phase shifters at ortho position are positive 45 ° of waveguide phase shifters and minus 45 ° of waveguide phase shifters respectively.
2. a kind of broadband circular polarizer according to claim 1, it is characterised in that: the turnsile connector includes dissipating
Matching unit and common waveguide are penetrated, the center for scattering matching unit is overlapped with the center of common waveguide, and scattering matching unit is located at
In the inner chamber bottom surface of turnsile connector.
3. a kind of broadband circular polarizer according to claim 1, it is characterised in that: the waveguide phase shifter includes rectangle
Waveguide cavity, wherein the rectangular waveguide of minus 45 ° of waveguide phase shifters is intracavitary to be equipped with the face E metallic membrane, the square of positive 45 ° of waveguide phase shifters
The face H metallic membrane is equipped in shape waveguide cavity.
4. a kind of broadband circular polarizer according to claim 1, it is characterised in that: 90 ° of the face E waveguide bend is corner cut
Waveguide bend or circular arc waveguide bend.
5. a kind of broadband circular polarizer according to claim 2, it is characterised in that: the scattering of the turnsile connector
Matching unit is single cylinder, square column or rotary table.
6. a kind of broadband circular polarizer according to claim 2, it is characterised in that: the scattering of the turnsile connector
Matching unit is hierarchic structure, and every level-one of the hierarchic structure is cylinder, square column or rotary table.
7. a kind of broadband circular polarizer according to claim 2, it is characterised in that: the turnsile connector it is public
Waveguide is circular waveguide or square wave guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821064008.4U CN208315768U (en) | 2018-07-06 | 2018-07-06 | A kind of broadband circular polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821064008.4U CN208315768U (en) | 2018-07-06 | 2018-07-06 | A kind of broadband circular polarizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208315768U true CN208315768U (en) | 2019-01-01 |
Family
ID=64717940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821064008.4U Active CN208315768U (en) | 2018-07-06 | 2018-07-06 | A kind of broadband circular polarizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208315768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085981A (en) * | 2019-05-13 | 2019-08-02 | 中国人民解放军火箭军工程大学 | A kind of double frequency satellite antenna polarization feed |
-
2018
- 2018-07-06 CN CN201821064008.4U patent/CN208315768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085981A (en) * | 2019-05-13 | 2019-08-02 | 中国人民解放军火箭军工程大学 | A kind of double frequency satellite antenna polarization feed |
| CN110085981B (en) * | 2019-05-13 | 2020-05-05 | 中国人民解放军火箭军工程大学 | Double-frequency satellite antenna variable polarization feed source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6304226B1 (en) | Folded cavity-backed slot antenna | |
| CN108808262A (en) | A kind of four ridge waveguide circular polarizer of broadband | |
| US20150138033A1 (en) | Antenna structure and wireless communication device using the same | |
| US20190131710A1 (en) | Wideband circularly polarized antenna | |
| US9478838B2 (en) | Orthomode coupler for an antenna system | |
| CN103794846B (en) | A kind of double frequency round polarized Beidou antenna | |
| CN104241819A (en) | Dual-module broadband circular polarization wide slot antenna | |
| CN109494486A (en) | Media filler circular waveguide circular polarizer implementation method | |
| CN111934102A (en) | Novel circular polarizer with integrated broadband structure | |
| CN109066079A (en) | Millimeter wave dual polarization slot antenna system and mobile terminal suitable for 5G communication | |
| CN208315768U (en) | A kind of broadband circular polarizer | |
| CN208904214U (en) | Millimeter wave dual polarization slot antenna system and mobile terminal suitable for 5G communication | |
| CN208272147U (en) | A kind of four ridge waveguide circular polarizer of broadband | |
| CN108321551B (en) | Antenna array and antenna device | |
| CN104218277A (en) | Small type isofacial polarizer | |
| CN108695600A (en) | A kind of broadband circular polarizer | |
| CN107394417B (en) | Ridge waveguide series feed network | |
| WO2024051434A1 (en) | Circularly polarized antenna, communication device, and circularly polarized antenna manufacturing method | |
| CN111384476A (en) | Circular waveguide circular polarizer loaded by slotting metal diaphragm | |
| CN205646177U (en) | Exceedingly high line during low section flat board moves | |
| US11967779B2 (en) | Single-frequency circular polarization positioning antenna and wearable device | |
| CN109462017B (en) | Circularly polarized single-pulse Cassegrain antenna | |
| CN113131217B (en) | All-metal dual-polarized open waveguide antenna | |
| CN111029781B (en) | Compact dielectric filling waveguide circularly polarized filter antenna | |
| CN219226616U (en) | Double circular polarization ultra wideband conical horn antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |