Title :
An Electronically Tuned Bandstop Filter Using BST Varactors
Author :
Chun, Young-Hoon ; Hong, Jia-Sheng ; Bao, Peng ; Jackson, Timothy J. ; Lancaster, Michael J.
Author_Institution :
Dept. of Electr., Heriot-Watt Univ., Edinburgh
Abstract :
This paper presents an investigation of a tunable bandstop filter using barium-strontium-titanate (BST) varactors. 3-pole bandstop filter with varactors is fabricated on MgO substrate. It is measured at the center frequency from 8.77 to 9.26 GHz and its maximum rejection is more than 26 dB at the stop band while the insertion loss at the pass band is less than 2 dB.
Keywords :
band-stop filters; barium compounds; ferroelectric materials; varactors; BST varactors; MgO; bandstop filter; frequency 8.77 GHz to 9.26 GHz; n electronically tuned; Band pass filters; Binary search trees; Conductors; Coplanar waveguides; Frequency; Metamaterials; Microwave filters; Periodic structures; Tunable circuits and devices; Varactors;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751802
