Title :
Microstrip cross-coupled stepped-impedance line bandstop filter
Author :
Tang, Wenxing ; Hong, Jia-Sheng ; Chun, Young-Hoon
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Heriot-Watt Univ., Edinburgh, UK
Abstract :
This paper presents a novel design of a wide spurious-free bandstop filter using cross-coupled stepped impedance lines. A measured bandstop filter with 10-dB bandwidth of 160 MHz is designed at the center frequency of 1.0 GHz, and it shows no spurious responses up to 5.2 GHz. As a preliminary investigation, the filter is tuned electronically using ferroelectric thin film varactors.
Keywords :
band-stop filters; microstrip filters; microwave filters; bandstop filter; cross-coupled stepped impedance lines; ferroelectric thin film varactors; frequency 1.0 GHz; frequency 160 MHz; frequency 5.2 GHz; microstrip filter; Band pass filters; Bandwidth; Ferroelectric materials; Frequency; Impedance; Microstrip filters; Microwave filters; Passband; Resonator filters; Varactors; Dual-mode resonator; bandpass filters; microstrip filters;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5165779
