Title :
A compact distributed low-pass filter with wide stopband
Author :
Kuo, Jen-Tsai ; Shen, Jason
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A distributed parallel resonance circuit is used to design a very compact low-pass filter with cutoff frequency 0.5 GHz. The circuit has a section of transmission line shunt with an interdigital capacitor connecting with two low-impedance lines at both of its terminals. A finite transmission zero can be generated near the passband edge so that. the filter has a sharp transition response. In addition, the stopband can be extended to more than 6 GHz by properly choosing the structural parameters of the circuit. The measured responses match with the simulation quite well
Keywords :
distributed parameter filters; frequency response; linear network synthesis; low-pass filters; passive filters; poles and zeros; 0.5 GHz; compact low-pass filter; distributed low-pass filter; distributed parallel resonance circuit; finite transmission zero; interdigital capacitor; low-impedance lines; sharp transition response; transmission line shunt; wide stopband; Capacitors; Cutoff frequency; Distributed parameter circuits; Filtering theory; Joining processes; Low pass filters; Passband; RLC circuits; Resonance; Structural engineering;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985654
