GB1365484A - Waveguide structures - Google Patents
Waveguide structuresInfo
- Publication number
- GB1365484A GB1365484A GB5648370A GB5648370A GB1365484A GB 1365484 A GB1365484 A GB 1365484A GB 5648370 A GB5648370 A GB 5648370A GB 5648370 A GB5648370 A GB 5648370A GB 1365484 A GB1365484 A GB 1365484A
- Authority
- GB
- United Kingdom
- Prior art keywords
- section
- grooves
- nov
- arrangement
- waveguide
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
- H01P1/17—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation
- H01P1/171—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a corrugated or ridged waveguide section
Landscapes
- Waveguide Aerials (AREA)
Abstract
1365484 Producing circular polarization PLESSEY CO Ltd 10 Nov 1971 [27 Nov 1970] 56483/70 Heading H1W An arrangement for producing circular or elliptical polarization comprises a section of rectangular waveguide having each of one pair of opposed walls provided with transverse grooves. The grooves provide differential phase delay between orthogonal components of a plane wave propagated in the section. The drawing (not shown) illustrates a waveguide of square section provided with grooves of approximately square section and spacing equal to half their depth. Impedance matching may be provided by a gradual reduction of groove depth at either end of the section. It is stated that the arrangement is capable of broad-band operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5648370A GB1365484A (en) | 1971-11-10 | 1971-11-10 | Waveguide structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5648370A GB1365484A (en) | 1971-11-10 | 1971-11-10 | Waveguide structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1365484A true GB1365484A (en) | 1974-09-04 |
Family
ID=10476735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5648370A Expired GB1365484A (en) | 1971-11-10 | 1971-11-10 | Waveguide structures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1365484A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0014099A1 (en) * | 1979-01-26 | 1980-08-06 | ERA Technology Limited | Circular polariser |
| EP0022401B1 (en) * | 1979-07-10 | 1984-09-19 | Thomson-Csf | Broad-band polariser with low ellipticity-ratio and microwave equipment with the same |
| EP0158606A2 (en) * | 1984-03-02 | 1985-10-16 | Selenia Spazio | Wide frequency band differential phase shifter with constant differential phase shifting |
| US12113260B2 (en) | 2019-06-19 | 2024-10-08 | Viasat, Inc. | Dual-band septum polarizer |
-
1971
- 1971-11-10 GB GB5648370A patent/GB1365484A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0014099A1 (en) * | 1979-01-26 | 1980-08-06 | ERA Technology Limited | Circular polariser |
| EP0022401B1 (en) * | 1979-07-10 | 1984-09-19 | Thomson-Csf | Broad-band polariser with low ellipticity-ratio and microwave equipment with the same |
| EP0158606A2 (en) * | 1984-03-02 | 1985-10-16 | Selenia Spazio | Wide frequency band differential phase shifter with constant differential phase shifting |
| EP0158606A3 (en) * | 1984-03-02 | 1986-04-16 | Selenia Spazio | Wide frequency band differential phase shifter with constant differential phase shifting |
| US12113260B2 (en) | 2019-06-19 | 2024-10-08 | Viasat, Inc. | Dual-band septum polarizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |