Temperature compensated cavity resonator as integral part of a LTCC baseplate

Author

Hesselbarth, Jan ; Stanelli, Daniel ; Groth, Siegfried ; Nuechter, Peter ; Goebel, Uhland

Author_Institution

Huber & Suhner AG, Pfaffikon, Switzerland

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

1101

Abstract

A new concept for compensating the influence of thermal expansion on the resonance frequency of cavity resonators is presented. A cylindrical resonator made of a material with a given coefficient of thermal expansion is covered with a dome-shaped structure made of a material with a higher coefficient of thermal expansion. Although both parts of the resonator structure contribute to the increase of the resonator volume with temperature, the effect on the TM₀₁₀ resonance mode can be designed such that the resonance frequency is stable. This concept is applied to a resonator suitable for integration into a LTCC baseplate.

Keywords

cavity resonators; ceramics; thermal expansion; LTCC baseplate; TM₀₁₀ resonance mode; coefficient of thermal expansion; cylindrical resonator; integration; low temperature co-fired ceramics; resonance frequency; resonator structure; resonator volume; temperature compensated cavity resonator; Cavity resonators; Ceramics; Dielectric materials; Microwave filters; Q factor; Resonance; Resonant frequency; Shape; Temperature; Thermal expansion;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1339177

Filename

1339177