EP 0860894 B1 20070822 - Miniature resonant antenna in the form of annular microstrips
Title (en)
Miniature resonant antenna in the form of annular microstrips
Title (de)
Miniatur-Resonanzantenne in Form von ringförmigen Streifenleiterantennen
Title (fr)
Antenne miniature résonnante de type microruban de forme annulaire
Publication
Application
Priority
FR 9702168 A 19970224
Abstract (en)
[origin: EP0860894A1] The antenna comprises a ring whose edge length determines the wavelength guide into it. The edge has radial meanders or slots which together produce no field to disturb the transmitted signal polarity. The fields produced by the meanders or slots compensate each other. The ring has two concentric sections whose diameter ratio is at most two.
IPC 8 full level
H01Q 5/00 (2006.01); H01Q 5/40 (2015.01); H01Q 9/04 (2006.01); H01Q 13/10 (2006.01)
CPC (source: EP US)
H01Q 5/40 (2015.01 - EP US); H01Q 9/0464 (2013.01 - EP US); H01Q 13/10 (2013.01 - EP US)
Citation (examination)
- US 3716861 A 19730213 - ROOT J
- JP H05152829 A 19930618 - SONY CORP
- US 4804965 A 19890214 - ROEDERER ANTOINE G [FR]
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0860894 A1 19980826; EP 0860894 B1 20070822; CA 2228631 A1 19980824; CA 2228631 C 20031014; DE 69838270 D1 20071004; DE 69838270 T2 20080515; FR 2760134 A1 19980828; FR 2760134 B1 19990326; US 6034645 A 20000307
DOCDB simple family (application)
EP 98400437 A 19980223; CA 2228631 A 19980223; DE 69838270 T 19980223; FR 9702168 A 19970224; US 2881198 A 19980224