EP 0173545 A3 19860910 - CRYSTALLINE ALUMINA LOADED CAVITY RESONATOR
Title (en)
CRYSTALLINE ALUMINA LOADED CAVITY RESONATOR
Publication
Application
Priority
AU 669284 A 19840821
Abstract (en)
[origin: EP0173545A2] This invention describes a crystalline alumina loaded cavity resonator which has low loss and high frequency stability such that its frequency is well-defined and only weakly perturbed by temperature, pressure and mechanical changes in its environment. Basically the resonator is a single crystal of sapphire (1) having protusions (2) and (2 min ) fitting closely into recesses in the base (3) and lid (3 min ) of a niobium housing. The lid (3 min ) is clamped by groove (4) and having a indium seal to seal the lid (3 min ) to the side walls (5) at groove (6) in lid (3 min ). A microwave probe (7) is used to couple microwave power into the cavity through hole (8).
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
- [Y] US 4028652 A 19770607 - WAKINO KIKUO, et al
- [A] GB 2129228 A 19840510 - MURATA MANUFACTURING CO
- [A] DE 1284491 B 19681205 - TELEFUNKEN PATENT
- [YD] IEEE TRANSACTIONS ON MAGNETICS, vol. MAG-17, no. 1, January 1981, pages 955-957, IEEE, New York, US; V.B. BRAGINSKII et al.: "The properties of superconducting resonators on sapphire"
- [A] IEEE PROCEEDINGS SECTION AAI, vol. 129, no. 4, part H, August 1982, pages 183-187, Old Working, Surrey, GB; C. VEDRENNE et al.: "Whispering-gallery modes of dielectric resonators"
- [Y] J. PHYSICS E, vol. 10, no. 12, 1977, pages 1193-1207; A. SEPTIER et al: "Microwave applications of superconducting materials"
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0173545 A2 19860305; EP 0173545 A3 19860910; DE 173545 T1 19860925; JP S61112402 A 19860530
DOCDB simple family (application)
EP 85305945 A 19850821; DE 85305945 T 19850821; JP 18380185 A 19850821