Title :
A design of tunable UWB filters
Author :
Ishida, Hitoshi ; Araki, Kiyomichi
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
Abstract :
A novel design method is proposed for UWB filters using a ring resonator structure with a stub. A five stage UWB filter with 86.6% relative bandwidth is fabricated based on a design method which shows an excellent performance, i.e. low insertion loss of 0.58 dB and flat group delay of 1.6 nsec. We also extend the design method to the one for a wide range tunable filter. Simulated results show that more than 40% tunable range can be obtained with a single capacitor for each ring resonator.
Keywords :
UHF filters; circuit tuning; delays; microwave filters; resonator filters; strip line filters; 0.58 dB; 1.6 ns; 2 GHz; 6.5 GHz; five stage UWB filter; flat group delay; insertion loss; ring resonator structure; single mode microstrip ring filter; stub; tunable filters; wide range tunable filter; Attenuation; Capacitors; Delay; Design methodology; Electronic mail; Frequency; Insertion loss; Microstrip filters; Optical ring resonators; Resonator filters;
Conference_Titel :
Ultra Wideband Systems, 2004. Joint with Conference on Ultrawideband Systems and Technologies. Joint UWBST & IWUWBS. 2004 International Workshop on
Print_ISBN :
0-7803-8373-7
DOI :
10.1109/UWBST.2004.1321009
