Title :
A tunable bandstop filter design using parallel coupled line resonator with varactor
Author :
Lee, Sang-Yun ; Lim, Won-Gyu ; Jeong, Won-Seok ; Yu, Jong Won
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
In this paper, a novel tunable bandstop filter has been proposed and fabricated. This filter is compact because the resonator is located under the microstrip line not to occupy much space. The equivalent circuit model of the proposed structure is proposed. By employing a varactor diode which has variable capacitance, the tunable bandstop characteristic is achieved. The fabricated bandstop filter shows good tunability( 1.04-3.13 GHz).
Keywords :
band-stop filters; resonator filters; varactors; equivalent circuit model; frequency 1.04 GHz to 3.13 GHz; microstrip line; parallel coupled line resonator; tunable bandstop filter design; varactor diode; Bandwidth; Capacitance; Diodes; Microstrip filters; Microstrip resonators; Microwave filters; Resonant frequency; Resonator filters; Tunable circuits and devices; Varactors;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958235
