Title :
Superconducting microstrip wide band filter for radio astronomy
Author :
Yuanzhi Li ; Lancaster, M.J. ; Huang, F. ; Roddis, N.
Author_Institution :
Sch. of Electron., Electr. & Comput. Eng., Univ. of Birmingham, UK
Abstract :
A ninth order wide-band bandpass filter is presented for radio astronomy applications. The filter, for Jodrell Bank Radio Observatory, is designed to have a fractional bandwidth of 26.14% and a center frequency of 1.53 GHz. It uses both straight and hairpin resonators in order to achieve the wide bandwidth. In addition, the filter is integrated with two spur-fine notch filters for second harmonic suppression. Good agreement between simulated and experimental results is obtained.
Keywords :
Chebyshev filters; UHF filters; band-pass filters; harmonics suppression; high-temperature superconductors; microstrip filters; microstrip resonators; notch filters; passive filters; radiotelescopes; resonator filters; superconducting filters; superconducting microwave devices; superconducting resonators; 1.53 GHz; HTS filters; Jodrell Bank Radio Observatory; hairpin resonators; microstrip wideband filter; ninth order bandpass filter; radioastronomy applications; second harmonic suppression; spur-fine notch filters; straight resonators; superconducting microstrip filter; Band pass filters; Bandwidth; Filter bank; Frequency; Microstrip filters; Observatories; Radio astronomy; Resonator filters; Superconducting filters; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210998
