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Wideband Microtrip Bandpass Filters for Radio Astronomy Applications

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5 Author(s)
Guoyong Zhang ; University of Birmingham, School of Electrical and Electronics Engineering, Birmingham, UK, B15 2TT. Phone: +44 121 4144348 Email: G.zhang@bham.ac.uk ; Michael J. Lancaster ; Frederick Huang ; Yejie Pan
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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

Published in:

2006 European Microwave Conference

Date of Conference:

10-15 Sept. 2006