Global Patent Index - EP 0296007 A1

EP 0296007 A1 19881221 - Whispering-gallery mode microwave resonator.

Title (en)

Whispering-gallery mode microwave resonator.

Title (de)

In Flüstergalerie-Modi angeregter Mikrowellenresonator.

Title (fr)

Résonateur hyperfréquence en mode de chuchotement en galerie.

Publication

EP 0296007 A1 19881221 (FR)

Application

EP 88401343 A 19880603

Priority

FR 8707940 A 19870605

Abstract (en)

The resonator consists of a resonating element contained in a flat disc (7), of diameter (2a) much greater than its thickness (2d). An electromagnetic wave propagates therein, confined between the perimeter of the disc (7) and a so-called caustic surface (3) of lesser radius (ac). The wave does not radiate outside, and the resonator can be placed on a dielectric (6) or metal (26) substrate. The disc can be hollowed out inside (22) the caustic (3). A resonator can be simulated, through the thickness of a dielectric substrate (6), by at least one metal ring (13) which forms, with the earth plane (10), a magnetic short-circuit (14). Excitation by microstrips (9) or by dielectric image guides (11). <??>Application to the frequency-stabilising of microwave oscillators, and to the combining of power with passive or active microwave filtering. <IMAGE>

IPC 1-7

H01P 7/10

IPC 8 full level

H01P 7/08 (2006.01); H01P 7/10 (2006.01)

CPC (source: EP US)

H01P 7/10 (2013.01 - EP US)

Citation (search report)

  • [Y] US 3558213 A 19710126 - MARCATILI ENRIQUE A J
  • [YD] IEEE PROCEEDINGS SECTION A A I, vol. 129, no. 4, partie H, août 1982, pages 183-187, Old Woking, Surrey, GB; C. VEDRENNE et al.: "Whispering-gallery modes of dielectric resonators"
  • [XP] 1987 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, vol. 1, Las Vegas, Nevada, 9-11 juin 1987, pages 367-370, IEEE, New York, US; X.H. JIAO et al.: "Whispering-gallery modes of dielectric structures applications to milimeter wave bandstop filter"
  • [XP] IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. MTT-35, no. 12, décembre 1987, pages 1169-1175, IEEE, New York, US; X.H. JIAO et al.: "Whispering-gallery modes of dielectric structures: applications to milimeter-wave bandstop filters"

Designated contracting state (EPC)

DE ES GB IT NL SE

DOCDB simple family (publication)

EP 0296007 A1 19881221; EP 0296007 B1 19920520; DE 3871245 D1 19920625; ES 2031612 T3 19921216; FR 2616273 A1 19881209; FR 2616273 B1 19891020; JP S647801 A 19890111; US 4992763 A 19910212

DOCDB simple family (application)

EP 88401343 A 19880603; DE 3871245 T 19880603; ES 88401343 T 19880603; FR 8707940 A 19870605; JP 13921688 A 19880606; US 20085388 A 19880601