EP 0174068 A1 19860312 - Improvements in or relating to microstrip antennas.
Title (en)
Improvements in or relating to microstrip antennas.
Title (de)
Mikrostreifenleiterantenne.
Title (fr)
Antenne à microbandes.
Publication
Application
Priority
GB 8417502 A 19840709
Abstract (en)
The bandwidth of a microstrip circular patch antenna (1) of approximately half-wavelength diameter at the resonant frequency is increased by surrounding it with an annular conducting sheet (6) of approximately quarter-wavelength width separated from the patch (1) by a gap (5) and having its outer edge connected to the ground-plane (3). The resulting structure is particularly suitable for feeding a reflector antenna.
IPC 1-7
IPC 8 full level
H01Q 9/04 (2006.01); H01Q 13/18 (2006.01); H01Q 19/00 (2006.01)
CPC (source: EP)
H01Q 9/0464 (2013.01); H01Q 13/18 (2013.01); H01Q 19/005 (2013.01)
Citation (search report)
- [AP] EP 0117017 A1 19840829 - HAZELTINE CORP [US]
- [AP] US 4460894 A 19840717 - ROBIN SEYMOUR [US], et al
- [A] US 4142190 A 19790227 - KERR JOHN L
- [A] US 4291311 A 19810922 - KALOI CYRIL M
- [A] IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. AP-29, no. 1, January 1981, pages 3-24, New York, US; K.R. CARVER et al. "Microstrip Antenna Technology"
- [A] ELECTRONICS LETTERS, no. 17, no. 24, 26th November 1981, pages 914-916, London, GB; G. DUBOST "Short-or Open-circuited Dipole parallel to perfect Reflector Plane and embedded in Substrate and acting at Resonance"
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0174068 A1 19860312; EP 0174068 B1 19910102; DE 3581020 D1 19910207; GB 8417502 D0 19840815
DOCDB simple family (application)
EP 85304623 A 19850628; DE 3581020 T 19850628; GB 8417502 A 19840709