A second‐order dual‐band bandpass filter using a dual‐band admittance inverter | Zendy

Zhang Hualiang | Zendy; Chen Kevin J. | Zendy

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A second‐order dual‐band bandpass filter using a dual‐band admittance inverter

Author(s) -

Zhang Hualiang,

Chen Kevin J.

Publication year - 2008

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.23326

Subject(s) - band pass filter , multi band device , admittance , butterworth filter , inverter , resonator , electronic filter topology , electronic engineering , filter (signal processing) , m derived filter , band stop filter , electrical engineering , prototype filter , voltage controlled filter , engineering , physics , filter design , low pass filter , voltage , electrical impedance , antenna (radio)

In this article, a second‐order dual‐band bandpass filter is designed. The filter consists of two dual‐band resonators connected by a dual‐band admittance inverter. The dual‐band resonator unit is made of two shunt stubs that coordinately produce two resonances. A novel dual‐band quarter‐wavelength line acts as the admittance inverter, providing suitable admittance transformations. To verify the design concept, a filter working at 2 and 5 GHz is devised and fabricated on Rogers' RO3006 printed circuit boards. In addition, the dual‐band filter is connected with a bandstop filter to suppress the unwanted spurious response. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1184–1187, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23326

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