Improvement of characteristics using cross patch in the LTCC filter

Author

Hayashi, J. ; Nikawa, Y.

Author_Institution

Soshin Electr. Co., Ltd, Nagano, Japan

Volume

1

fYear

2003

Firstpage

531

Abstract

A TE/sub 10/ mode dielectric LTCC (low temperature co-fired ceramic) filter using a cross patch is proposed. The LTCC filter is designed as a lumped circuit without a cross patch. The filter is designed by lumped elements and converted to an LTCC filter. The characteristics of the filter are simulated by finite element methods (FEM). The center frequency of the filter is 6 GHz; and the bandwidth is 500 MHz. The simulated results of the filter are compared with the experimental ones and agree well. An LTCC filter, using the same design procedure, is applied to one using a cross patch. This cross patch is useful for making the attenuation poles. It works as the TEM transmission in the LTCC filter. As a result, it realizes an attenuation pole. An LTCC filter using a cross patch is designed at a center frequency of 25 GHz.

Keywords

band-pass filters; ceramic packaging; circuit simulation; dielectric-loaded waveguides; finite element analysis; lumped parameter networks; microwave filters; millimetre wave filters; poles and zeros; waveguide filters; 25 GHz; 500 MHz; 6 GHz; FEM; LTCC filter cross patch; TEM transmission; attenuation poles; band-pass filters; dielectric loaded waveguide filters; filter center frequency; finite element methods; low temperature co-fired ceramics; lumped circuit elements; microwave/mm-wave filters; Attenuation; Bandwidth; Ceramics; Circuit simulation; Dielectrics; Filters; Finite element methods; Frequency; Tellurium; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2003 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-7695-1

Type

conf

DOI

10.1109/MWSYM.2003.1210993

Filename

1210993