EP 0115983 A3 19841227 - SPATIAL FILTER FOR CIRCULARLY POLARIZED MICROWAVES AND CASSEGRAIN ANTENNA USING SUCH A FILTER
Title (en)
SPATIAL FILTER FOR CIRCULARLY POLARIZED MICROWAVES AND CASSEGRAIN ANTENNA USING SUCH A FILTER
Publication
Application
Priority
FR 8301451 A 19830131
Abstract (en)
[origin: US4652891A] A spatial filter is provided for electromagnetic waves with circular polarization comprising three parallel conducting networks, the central network being totally reflecting for a rectilinear polarization of given direction and having a non zero reflection coefficient for a rectilinear polarization having a direction perpendicular to the preceding one.
IPC 1-7
IPC 8 full level
H01Q 15/12 (2006.01); H01Q 19/195 (2006.01)
CPC (source: EP US)
H01Q 15/12 (2013.01 - EP US); H01Q 19/195 (2013.01 - EP US)
Citation (search report)
- [A] FR 2281660 A1 19760305 - THOMSON CSF [FR]
- [A] FR 1307590 A 19621026 - WESTERN ELECTRIC CO
- [A] US 3271771 A 19660906 - HANNAN PETER W, et al
- [A] FR 2098372 A1 19720310 - BRITISH AIRCRAFT CORP LTD
- [A] FR 2061510 A1 19710625 - THOMSON CSF
- [A] US 3340535 A 19670905 - DAMONTE JOHN B, et al
- [A] ELECTRONICS AND COMMUNICATIONS IN JAPAN, volume 62, no. 9, septembre 1979 (SILVER SPRING, US) R. WATANABE et al.: "Quasi-optical diplexer using two-Fabry-Perot resonators", pages 78-87
- [A] PROCEEDINGS OF THE IEE, volume 120, no. 4, avril 1973, (STEVENAGE, GB) N. HILL et al.: "Microwave transmission through a series of inclined gratings", pages 407-412
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0115983 A2 19840815; EP 0115983 A3 19841227; FR 2540296 A1 19840803; FR 2540296 B1 19850405; US 4652891 A 19870324; US 4728961 A 19880301
DOCDB simple family (application)
EP 84400149 A 19840124; FR 8301451 A 19830131; US 57339984 A 19840124; US 91312786 A 19860929