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; magnesium compounds; strontium; substrates; titanium compounds; varactors; 3-pole bandstop filter; BST varactors; barium-strontium-titanate varactors; electronically tuned bandstop filter; frequency 8.77 GHz to 9.23 GHz; insertion loss; maximum rejection; Band pass filters; Binary search trees; Conductors; Coplanar waveguides; Frequency; Metamaterials; Microwave filters; Periodic structures; Tunable circuits and devices; Varactors;
Conference_Titel :
Wireless Technology, 2008. EuWiT 2008. European Conference on
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-008-8
