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Compact quadruplet bandpass filter synthesis using λ/4 resonators
Zhang S.2; Zhu L.2
Source Publication2014 IEEE International Wireless Symposium, IWS 2014
AbstractThis paper presents a unified coupling-matrix synthesis method for microstrip quadruplet bandpass filter on λ/4 resonators. The mainline is implemented with cascading four λ/4 resonators via alternative J and K inverters, while the weak cross coupling path is created with a J inverter between the 1 and 4 λ/4 resonators. The resultant bandpass filter features a generalized Chebyshev in-band frequency response with a pair of determined finite transmission zeros. All the values of pertained J and K inverters are synthesized from the coupling matrix and judiciously extracted based on the fullwave simulation. Finally, a microstrip quadruplet bandpass filter centering at 2.4 GHz with a fractional bandwidth of 10.0% is designed via the proposed synthesis approach. The predicted filtering frequency responses are verified by both fullwave simulated and measured results. © 2014 IEEE.
KeywordCoupling-matrix synthesis quadruplet bandpass filter quarter-wavelength resonator
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Document TypeConference paper
Affiliation1.Universidade de Macau
2.Nanyang Technological University
Recommended Citation
GB/T 7714
Zhang S.,Zhu L.. Compact quadruplet bandpass filter synthesis using λ/4 resonators[C],2014.
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