GB582856A - Improvements in or relating to electromagnetic radiators or receivers - Google Patents
Improvements in or relating to electromagnetic radiators or receiversInfo
- Publication number
- GB582856A GB582856A GB1286444A GB1286444A GB582856A GB 582856 A GB582856 A GB 582856A GB 1286444 A GB1286444 A GB 1286444A GB 1286444 A GB1286444 A GB 1286444A GB 582856 A GB582856 A GB 582856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- wave
- section
- degrees
- polarization
- 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
Landscapes
- Waveguide Aerials (AREA)
Abstract
582,856. Wave guides. BIRKS, J. B. July 5, 1944, No. 12864. [Class 40 (v)] An ultra-short-wave radiator or receiver comprises a section of wave guide of such dimensions that at the operating frequency only H01 and H10 waves can be propagated, the two modes having different phase velocities such that their mutual phase relationship becomes changed by 90 degrees in passing along the guide section. Fig. 1 shows a longitudinal, and Fig. 2 a transverse section of the guide. Energy is conveyed to the circular guide 10 by a radial probe 13. The guide 10 is closed at one end 12 and at the other opens into a guide 15 of rectangular section with the opposite end 16 open. The dimensions a, b of the rectangle and the length of the guide 15 are such that the wave H01 is advanced in phase by 90 degrees relative to the other wave H10 in passing along the guide 15, the two waves being thus in quadrature at the exit plane 16. This gives rise to a rotation of the direction of polarization of the emitted wave, the polarization being circular if the probe 13 is set at 45 degrees to the sides of the rectangular guide, and elliptical if other angular relations are adopted. The device may be employed in reception as well as transmission.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1286444A GB582856A (en) | 1944-07-05 | 1944-07-05 | Improvements in or relating to electromagnetic radiators or receivers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1286444A GB582856A (en) | 1944-07-05 | 1944-07-05 | Improvements in or relating to electromagnetic radiators or receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB582856A true GB582856A (en) | 1946-11-29 |
Family
ID=10012541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1286444A Expired GB582856A (en) | 1944-07-05 | 1944-07-05 | Improvements in or relating to electromagnetic radiators or receivers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB582856A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2631237A (en) * | 1948-05-08 | 1953-03-10 | Fed Telecomm Lab Inc | Antenna |
US2933731A (en) * | 1954-12-08 | 1960-04-19 | Cossor Ltd A C | Electromagnetic wave radiators |
US2948865A (en) * | 1955-08-08 | 1960-08-09 | Philips Corp | Mode ellipticity correcting device |
US3063025A (en) * | 1954-01-28 | 1962-11-06 | Hughes Aircraft Co | Waveguide network |
EP0520919A1 (en) * | 1991-06-26 | 1992-12-30 | France Telecom | Filtering device for electromagnetic waves in a waveguide with symmetry around the rotational axis, and inserted pieces of rectangular waveguide |
EP1263084A2 (en) * | 2001-05-31 | 2002-12-04 | EADS Deutschland Gmbh | Slot antenna |
-
1944
- 1944-07-05 GB GB1286444A patent/GB582856A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2631237A (en) * | 1948-05-08 | 1953-03-10 | Fed Telecomm Lab Inc | Antenna |
US3063025A (en) * | 1954-01-28 | 1962-11-06 | Hughes Aircraft Co | Waveguide network |
US2933731A (en) * | 1954-12-08 | 1960-04-19 | Cossor Ltd A C | Electromagnetic wave radiators |
US2948865A (en) * | 1955-08-08 | 1960-08-09 | Philips Corp | Mode ellipticity correcting device |
EP0520919A1 (en) * | 1991-06-26 | 1992-12-30 | France Telecom | Filtering device for electromagnetic waves in a waveguide with symmetry around the rotational axis, and inserted pieces of rectangular waveguide |
FR2678434A1 (en) * | 1991-06-26 | 1992-12-31 | Sabatier Christian | DEVICE FOR FILTERING ELECTROMAGNETIC WAVES CIRCULATING IN A WAVEGUIDE OF A FIRST TYPE WITH A REVOLUTION SYMMETRY, WITH SECONDS OF WAVEGUIDES OF A SECOND TYPE INSERTED. |
US5309128A (en) * | 1991-06-26 | 1994-05-03 | France Telecom | Device for the filtering of electromagnetic waves propagating in a rotational symmetrical waveguide, with inserted rectangular filtering waveguide sections |
EP1263084A2 (en) * | 2001-05-31 | 2002-12-04 | EADS Deutschland Gmbh | Slot antenna |
EP1263084A3 (en) * | 2001-05-31 | 2004-11-10 | EADS Deutschland Gmbh | Slot antenna |
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