A novel resonance absorption isolator with T-microstrip

Author

Hasegawa, T. ; Matsuda, Keisuke ; Taguchi, Yasuhiro ; Wada, Tomotaka ; Koshino, Masayoshi ; Okada, Takashi

Author_Institution

Murata Manuf. Co., Ltd., Nagaokakyo, Japan

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

3

Abstract

A novel resonance absorption isolator for cellular phone terminals has been developed, which employing T-microstrip line on a ferrite blank. Reduction of stray capacitance of the microtrip makes it possible to realize improvement of the insertion loss and to decrease the additional circuit element number. The operation theory of the isolator has been confirmed by using EM field analysis and circuit simulator. The developed isolator is composed of only two elements which are a 1.0×0.8×0.6mm³ Core-Isolator and a 0.4×0.2×0.2mm³ ceramic capacitor. Its insertion loss and isolation performances are 0.5dB max. and 9.2dB min., respectively at 1.9GHz band.

Keywords

cellular radio; ceramic capacitors; circuit resonance; circuit simulation; ferrite devices; microstrip lines; telecommunication terminals; EM field analysis; T-microstrip line; ceramic capacitor; circuit element number; circuit simulator; core-isolator; ferrite blank; frequency 1.9 GHz; insertion loss; isolation performances; stray capacitance reduction; Absorption; Ferrites; Finite element analysis; Impedance; Insertion loss; Isolators; Strips; Isolators; absorption; ferrites; finite element methods; microwave devices; resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697443

Filename

6697443