GB859528A - Improvements in or relating to circular polarisers for very short radio waves - Google Patents

Improvements in or relating to circular polarisers for very short radio waves

Info

Publication number
GB859528A
GB859528A GB3290958A GB3290958A GB859528A GB 859528 A GB859528 A GB 859528A GB 3290958 A GB3290958 A GB 3290958A GB 3290958 A GB3290958 A GB 3290958A GB 859528 A GB859528 A GB 859528A
Authority
GB
United Kingdom
Prior art keywords
pairs
waveguide
flare
members
waveguides
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
Application number
GB3290958A
Inventor
Basil John Nicholson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB3290958A priority Critical patent/GB859528A/en
Publication of GB859528A publication Critical patent/GB859528A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H01Q15/242—Polarisation converters
    • H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
    • 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
    • H01P1/173—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation using a conductive element

Landscapes

  • Waveguide Aerials (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)

Abstract

859,528. Radio wave propagation control. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. July 31, 1959 [Oct. 15, 1958], No. 32909/58. Class 40(7). The plane polarized waves from a "pig trough" flare 3, 4, 5, containing a slotted waveguide 1, 2 and a polarization filter 6, are circularly polarized by a structure 7-10 extending over the whole length of the mouth of the flare. The circular polarizer comprises a series of square sectioned waveguides 7 located between top and bottom plates 8, 9, the output end of the structure being covered in by a plate 10, having openings coinciding with the waveguide ends. In each waveguide 7 and projecting from two opposite faces are arranged wave delaying means consisting of pairs of conducting posts 11, 11<SP>1</SP>; 12, 12<SP>1</SP>; 13, 131 dimensioned to provide a relative phase retardation of 90 degrees between two mutually perpendicular wave components, the members of each pair being of the same length and collinear, but of different length from the members of the other two pairs. Two pairs of shorter posts 14, 14<SP>1</SP> and 15 15<SP>1</SP> are arranged along the other two opposite faces of the guide to improve the impedance matching. The waveguides may alternatively be of circular cross-section.
GB3290958A 1958-10-15 1958-10-15 Improvements in or relating to circular polarisers for very short radio waves Expired GB859528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3290958A GB859528A (en) 1958-10-15 1958-10-15 Improvements in or relating to circular polarisers for very short radio waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3290958A GB859528A (en) 1958-10-15 1958-10-15 Improvements in or relating to circular polarisers for very short radio waves

Publications (1)

Publication Number Publication Date
GB859528A true GB859528A (en) 1961-01-25

Family

ID=10345818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3290958A Expired GB859528A (en) 1958-10-15 1958-10-15 Improvements in or relating to circular polarisers for very short radio waves

Country Status (1)

Country Link
GB (1) GB859528A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027094A1 (en) * 1980-07-17 1982-02-04 Siemens AG, 1000 Berlin und 8000 München RE-POLARIZING DEVICE FOR GENERATING CIRCULAR POLARIZED ELECTROMAGNETIC WAVES
GB2155694A (en) * 1984-03-06 1985-09-25 Decca Ltd Antenna for circularly polarised radiation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3027094A1 (en) * 1980-07-17 1982-02-04 Siemens AG, 1000 Berlin und 8000 München RE-POLARIZING DEVICE FOR GENERATING CIRCULAR POLARIZED ELECTROMAGNETIC WAVES
GB2155694A (en) * 1984-03-06 1985-09-25 Decca Ltd Antenna for circularly polarised radiation

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