Title :
A compact tri-band bandpass filter based on grounded tri-mode stepped-impedance stub-loaded resonator
Author :
Rusakov, Andrey ; Jankovic, N. ; Crnojevic-Bengin, V.
Author_Institution :
Dept. of Microelectron. & Radio Eng., St. Petersburg Electrotech. Univ., St. Petersburg, Russia
Abstract :
In this work, a stepped-impedance stub-loaded resonator which exhibits tri-mode behaviour is presented. The proposed resonator is analyzed in detail and used to design a compact tri-band bandpass filter which operates at 1.8/3.5/5.2 GHz. The fabricated filter exhibits good selectivity, good transmission and return-loss characteristics, and a compact size of only 0.21λg × 0.11λg, where λg denotes the guided wavelength on the given substrate at the central frequency of the first passband.
Keywords :
UHF resonators; band-pass filters; microwave resonators; resonator filters; compact band-pass filter; frequency 1.8 GHz; frequency 3.5 GHz; frequency 5.2 GHz; grounded resonator; stubloaded resonator; triband band-pass filter; trimode stepped impedance resonator; Band-pass filters; Filtering theory; Impedance; Microwave filters; Passband; Resonant frequency; Resonator filters; stepped-impedance resonator; stub-loaded resonator; tri-band filter; tri-mode resonator;
Conference_Titel :
Telecommunication in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2013 11th International Conference on
Conference_Location :
Nis
Print_ISBN :
978-1-4799-0899-8
DOI :
10.1109/TELSKS.2013.6704933
