A study on a RF filter of IMT-2000 terminal using coupled rectangular microstrip loop resonators

Author

Lee, Y.H. ; Kwon, W.H. ; Koo, B.H. ; Lee, C.S.

Author_Institution

Dept. of Radio Commun. Eng., Honam Univ., Kwangju, South Korea

Volume

2

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

295

Abstract

In this paper, we analyzed RF filters of IMT-2000 terminal using coupled rectangular microstrip loop resonators and compared this with numerical analysis. The characteristic equations of the resonators are derived and the resonators analyzed with two-port networks. We confirmed that the resonance length varied according to substrate height, dielectric constant, line width, etc. in the rectangular loop resonator with and without a gap. Also we analysed the filters which are composed of coupled rectangular microstrip ring loop resonators. The coupling structure is the cross coupled rectangular resonator. The derived characteristics equation of the filters that is composed of a two port ABCD matrix. We obtained the coupling coefficient for the coupled resonators. In this papers, small size filter with low loss using microstrip loop resonators is presented

Keywords

UHF filters; equivalent circuits; matrix algebra; microstrip filters; microstrip resonators; mobile radio; passive filters; resonator filters; IMT-2000 terminal; RF filter; characteristic equations; characteristics equation; coupled rectangular loop resonators; coupling coefficient; cross coupled rectangular resonator; microstrip loop resonators; numerical analysis; two port ABCD matrix; two-port networks; Dielectric constant; Dielectric substrates; Equations; Microstrip filters; Microstrip resonators; Numerical analysis; Radio frequency; Resonance; Resonator filters; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1999 Asia Pacific

Print_ISBN

0-7803-5761-2

Type

conf

DOI

10.1109/APMC.1999.829809

Filename

829809