Title :
Wideband Microtrip Bandpass Filters for Radio Astronomy Applications
Author :
Zhang, Guoyong ; Lancaster, Michael J. ; Huang, Frederick ; Pan, Yejie ; Roddis, Neil
Author_Institution :
Sch. of Electr. & Electron. Eng., Birmingham Univ.
Abstract :
This paper presents wideband bandpass filters with a novel microstrip configuration. Using quarter-wavelength resonators, internal coupling between resonators was realized by interdigital capacitors (IDC) and capacitive open-ended stubs. Impedance steps, was utilized for external couplings. Two wideband filters at L band and C band with a fractional bandwidth (FBW) of 48% and 76%, respectively, were demonstrated as the concept for use in e-MERLIN receivers of radio astronomy applications. The measurement performance agrees well with the simulation
Keywords :
band-pass filters; microstrip filters; microwave filters; microwave receivers; radio receivers; radioastronomy; resonators; 1 to 2 GHz; 4 to 8 GHz; C band; L band; capacitive open-ended stubs; e-MERLIN receivers; fractional bandwidth; impedance step; interdigital capacitors; microstrip configuration; quarter-wavelength resonators; radio astronomy; resonator internal coupling; wideband microstrip bandpass filters; Band pass filters; Bandwidth; Capacitors; Extraterrestrial measurements; Impedance; Microstrip filters; Radio astronomy; Receivers; Resonator filters; Wideband;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281497
