Compact microstrip resonators for 900 MHz frequency band

Author

Banciu, M.G. ; Ramer, R. ; Ioachim, A.

Author_Institution

Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia

Volume

13

Issue

5

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

175

Lastpage

177

Abstract

A technique to reduce the size of planar resonators is investigated using a transmission line model and a finite-difference time-domain (FDTD) method. New miniaturized square microstrip resonators are proposed for 900 MHz band. The resonators offer low impedance sections leading to a better handling of power. The feasibility of compact filters using the proposed resonators is demonstrated. The input/output coupling lines of a two-pole filter have been positioned in a way that produces a filter response with transmission zeros on the both sides of the pass-band. Sharper skirts and higher out-of-band rejection are obtained for four-pole filters with cross-coupled resonators.

Keywords

band-pass filters; finite difference time-domain analysis; microstrip filters; microstrip resonators; poles and zeros; resonator filters; transmission line theory; 900 MHz; band-pass filter; compact square microstrip resonator; cross-coupled resonator; finite difference time domain method; four-pole filter; planar resonator; stepped-impedance resonator; transmission line model; transmission zeros; two-pole filter; wireless passive component; Band pass filters; Couplings; Finite difference methods; Frequency; Impedance; Microstrip resonators; Planar transmission lines; Power transmission lines; Resonator filters; Time domain analysis;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2003.811673

Filename

1198083