EP 1003235 A1 20000524 - Linear/circular polarization converter utilizing elliptical waveguide
Title (en)
Linear/circular polarization converter utilizing elliptical waveguide
Title (de)
Linear/Zirkular- Polarisationswandler mit elliptischem Hohlleiter
Title (fr)
Convertisseur de polarisation linéaire/circulaire utilisant un guide d' onde elliptique
Publication
Application
Priority
JP 33126598 A 19981120
Abstract (en)
The linear/circular polarizing converter of the present invention uses an elliptical waveguide (1) having elliptical cross-section which receives supply of a linearly polarized signal at one end of elliptical waveguide and outputs a circularly polarized signal from the other end of elliptical waveguide (1) When the application frequency wavelength of polarized signal supplied to the elliptical waveguide is lambda 0, length of elliptical waveguide is L, cutoff wavelength of polarizing plane in the long axis direction of polarized signal is lambda CH, cutoff wavelength of the polarizing plane in the short axis direction of polarized signal is lambda CV, phase of the basic mode polarization signal in the long axis direction for the polarized signal is θH, phase of basic mode polarization in the short axis direction is θV and phase difference of these phases θH and θV is DELTA θ, θH is expressed using lambda 0, lambda CH and L, while θV is expressed using lambda 0, lambda CV and L, and long axis size a, short axis size b and length L in the tube axis direction are selected to meet DELTA θ = 90 DEG . <IMAGE> <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H01P 1/17 (2006.01)
CPC (source: EP KR)
H01P 1/17 (2013.01 - EP KR)
Citation (search report)
- [A] US 2607849 A 19520819 - PURCELL EDWARD M, et al
- [X] LADANYI-TUROCZY B: "DESIGN OF A SUPERELLIPTIC WAVEGUIDE POLARIZER", PROCEEDINGS OF THE EUROPEAN MICROWAVE CONFERENCE,GB,TUNBRIDGE WELLS, MICROWAVE EXHIBITIONS, vol. CONF. 16, 1986, pages 441 - 446, XP002023207
- [A] J. DESCHAMPS ET AL.: "ÉTUDE ET RÉALISATION D' UN POLARISEUR CIRCULAIRE D' ONDES HYPERFRÉQUENCE A FORTE TENUE EN PUISSANCE", REVUE DE PHYSIQUE APPLIQUEE., vol. 5, no. 2, April 1970 (1970-04-01), LES EDITIONS DE PHYSIQUE. PARIS., FR, pages 283 - 286, XP002131486
- [A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 333 (E - 794) 26 July 1989 (1989-07-26)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1003235 A1 20000524; CN 1254963 A 20000531; JP 2000165102 A 20000616; KR 100322178 B1 20020206; KR 20000047673 A 20000725; TW 439316 B 20010607
DOCDB simple family (application)
EP 99308849 A 19991105; CN 99123875 A 19991115; JP 33126598 A 19981120; KR 19990051427 A 19991119; TW 88118414 A 19991025