Design of microstrip lowpass filter with wide stopband and sharp roll‐off using hexangular shaped resonator | Zendy

Hayati M. | Zendy; Gholami M. | Zendy; Vaziri H.S. | Zendy; Zaree T. | Zendy

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Design of microstrip lowpass filter with wide stopband and sharp roll‐off using hexangular shaped resonator

Author(s) -

Hayati M.,

Gholami M.,

Vaziri H.S.,

Zaree T.

Publication year - 2015

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el.2014.3853

Subject(s) - stopband , microstrip , low pass filter , resonator , filter (signal processing) , acoustics , electronic engineering , elliptic filter , passband , materials science , band pass filter , prototype filter , electrical engineering , physics , engineering , optoelectronics

A compact lowpass filter using a hexangular shaped resonator is presented. The designed lowpass filter has a −3 dB cutoff frequency of 2.97 GHz. The stopband bandwidth for the attenuation level of −20 dB is from 3.32 GHz up to 21 GHz, and the circuit only occupies 10.04 × 10.92 mm 2 . The structure is simulated, fabricated and measured. Both simulation and measured results are presented and compared and there is good agreement between them. The insertion loss in the passband is <0.06 dB and the fabricated filter presents a sharp transition band from 2.97 to 3.32 GHz for the attenuation level of −3 and −20 dB, respectively.

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