Title :
HTSC quasi-elliptic linear-phase filter with prototype structure
Author :
Zhang Tianliang ; Yang Kai ; Luo Zhengxiang
Author_Institution :
Sch. of Astronaut. & Aeronaut., UESTC of China, Chengdu, China
Abstract :
A high temperature superconducting (HTSC) wideband filter with both quasi-elliptic and linear-phase response is directly designed by adopting prototype structure in this paper. At the same time, the open-gap´s position in traditional square open-loop microstrip resonator is modified for the reason of adapting to the conventional aqueous photolithography technology. A six-pole HTSC linear phase filter which has a 55MHz pass band at a center frequency of 1995MHz is designed based on the prototype structure. The measured result is in very good agreement with the simulated result. The measured bandwidth of the filter is 55 MHz and the group delay variation is less than ±0.5 ns over 55% of the filter bandwidth.
Keywords :
elliptic filters; high-temperature superconductors; linear phase filters; microstrip resonators; photolithography; superconducting filters; HTSC quasielliptic linear-phase filter; aqueous photolithography technology; bandwidth 55 MHz; filter bandwidth; frequency 1995 MHz; group delay; high temperature superconducting wideband filter; linear-phase response; open-gap position; prototype structure; quasielliptic response; square open-loop microstrip resonator; Band-pass filters; Couplings; Maximum likelihood detection; Microwave filters; Nonlinear filters; Resonator filters; Superconducting filters;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3050-0
DOI :
10.1109/ICCCAS.2013.6765375