Compact lowpass filter with a sharp roll‐off using patch resonators | Zendy

Raphika P. M. | Zendy; Abdulla P. | Zendy; Jasmine P. M. | Zendy

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Compact lowpass filter with a sharp roll‐off using patch resonators

Author(s) -

Raphika P. M.,

Abdulla P.,

Jasmine P. M.

Publication year - 2014

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.28644

Subject(s) - stopband , low pass filter , microstrip , resonator , filter (signal processing) , cutoff frequency , microwave , elliptic filter , acoustics , materials science , prototype filter , electronic engineering , engineering , optics , physics , optoelectronics , electrical engineering , telecommunications

This article presents a new compact microstrip lowpass filter with sharp roll‐off and ultrawide stopband using funnel and triangular patch resonators. The patch resonators are placed symmetrically about a high impedance central microstrip line. The filter has been designed and fabricated using a very low cost material. The experimental results show a good agreement with the simulated results and demonstrate that, the sharp roll‐off and good stopband performance is obtained by the proposed filter. The 3 dB cutoff frequency of the proposed filter is at 5.55 GHz with a roll‐off of 84 dB/GHz and its stopband extends up to 11.8 GHz. The filter has an ultra compact size of 9.4 × 8 mm 2 . © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2534–2536, 2014

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