LTCC-MLC duplexer for DCS-1800

Author

Sheen, Jyh-Wen

Author_Institution

Comput. & Commun. Res. Lab., Ind. Technol. Res. Inst., Hsinchu, Taiwan

Volume

47

Issue

9

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1883

Lastpage

1890

Abstract

A low-temperature cofired-ceramic (LTCC) multilayer-ceramic (MLC) duplexer is presented in this paper. The duplexer is designed for a DCS-1800 handset. It is constructed using a multilayer laminated bandpass filter and a multilayer laminated bandstop filter. These two filters are capable of easy tuning after duplexer manufacture. The computer-aided design flowchart is also presented. Additionally, the tuning method and loss improvements of the duplexer are discussed. Measured results show the performance of the LTCC-MLC duplexer is acceptable for DCS-1800 applications

Keywords

UHF filters; band-pass filters; band-stop filters; cellular radio; ceramic capacitors; circuit CAD; circuit tuning; telephone sets; 1.8 GHz; DCS-1800 handset; LTCC-MLC duplexer; computer-aided design flowchart; conductor loss; loss improvements; low-temperature cofired-ceramic multilayer-ceramic duplexer; multilayer laminated bandpass filter; multilayer laminated bandstop filter; tuning; Band pass filters; Ceramics; Circuits; Coaxial components; Design automation; Dielectrics; Digital filters; Microwave filters; Radio frequency; Resonator filters;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.788526

Filename

788526