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Enhancement of attenuation poles at finite frequencies in six-pole microstrip quasi-elliptic filter
Chang K.F.; Tam K.W.; Martins R.P.
2001-12-01
Conference Name4th International Conference on ASIC
Source PublicationInternational Conference on ASIC, Proceedings
Pages236-239
Conference Date23-25 Oct. 2001
Conference PlaceShanghai, China, China
Abstract

In this paper, a novel scheme in enhancing the selectivity of the quasi-elliptic microstrip bandpass filters is presented. A rectangle open-loop resonator is implemented as the cross coupling path in the filter topology. This cross coupling relocates the existing attenuation poles of the quasi-elliptic filter so as to provide higher selectivity. Compared to a traditional six-pole quasi-elliptic filter with a fractional bandwidth of 7.8% and center frequency of 1GHz, this scheme offers additional 20dB rejection improvement at the attenuation pole in the upper rejection band whilst 5dB improvement in the lower rejection band.

DOI10.1109/ICASIC.2001.982541
URLView the original
Indexed BySCI
WOS Research AreaComputer Science ; Engineering ; Telecommunications
WOS SubjectComputer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000176369900047
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Chang K.F.,Tam K.W.,Martins R.P.. Enhancement of attenuation poles at finite frequencies in six-pole microstrip quasi-elliptic filter[C],2001:236-239.
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