A novel compact quadruple-mode microstrip bandpass filter with low harmonic response

A novel compact quadruple-mode resonator is presented in this paper. The quadruple-mode resonator consists of a pair of quarter-wavelength resonators and a pair of L-C type resonators connected to each other through a grounded via. The new resonator has the same size as a dual mode square open-loop...

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Bibliographic Details
Published in2009 Asia Pacific Microwave Conference pp. 898 - 901
Main Authors Lee, K.C., Su, H.T., Haldar, M.K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Arm
Band pass filters
bandpass filter
Chebyshev approximation
compact filters
Couplings
Frequency
Microstrip filters
Microstrip lines
Microstrip resonators
Power harmonic filters
quadruple-mode resonator
Resonance
Resonator filters
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Summary:A novel compact quadruple-mode resonator is presented in this paper. The quadruple-mode resonator consists of a pair of quarter-wavelength resonators and a pair of L-C type resonators connected to each other through a grounded via. The new resonator has the same size as a dual mode square open-loop resonator published earlier, but has four modes and better harmonic response. The resonator filter has a centre frequency of 0.99 GHz and passband insertion loss of 1.2 dB. The selectivity of the filter and stopband response can be improved by implementing different feed structures. Simulated and measured results are in good agreement.
ISBN:9781424428014
1424428017
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2009.5384308