LTCC 3-D resonators applied to the design of very compact filters for Q-band applications

Author

Rigaudeau, Laetitia ; Ferrand, Paul ; Baillargeat, Dominique ; Bila, Stéphane ; Verdeyme, Serge ; Lahti, Markku ; Jaakola, Tuomo

Author_Institution

Inst. XLIM, Limoges Univ.

Volume

54

Issue

6

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

2620

Lastpage

2627

Abstract

We propose a new low-temperature co-fired ceramic (LTCC) U-shaped resonator. The advantages of LTCC technology are employed to design this three-dimensional (3-D) lambda_g/2 resonator. The latter is modeled and optimized by 3-D electromagnetic simulations and is validated by experimental results. In order to validate the coupling between these resonators, a two-pole filter, functioning around 39 GHz, has then been designed and realized with success. Finally, two very compact three-pole bandpass filters have been conceived for a Q-band duplexer design. On the one hand, a filter has been designed around 38 GHz and presents a transmission zero in the upper band. On the other hand, an other filter functioning at 40.7 GHz is presented with a transmission zero in the lower band. Experimental results are in good agreement with theoretical ones

Keywords

band-pass filters; millimetre wave filters; poles and zeros; resonator filters; 38 GHz; 39 GHz; 3D resonators; 40.7 GHz; LTCC; U-shaped resonators; low-temperature co-fired ceramic technology; microwave duplexers; quasi-elliptic bandpass filters; transmission zero; Band pass filters; Bandwidth; Ceramics; Couplings; Electromagnetic modeling; Filtering theory; Magnetic separation; Microwave technology; Millimeter wave technology; Resonator filters; Duplexer; high integration; low-temperature co-fired ceramic (LTCC) technology; quasi-elliptic bandpass filters; three-dimensional (3-D) resonators;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2006.872931

Filename

1643597