Vol. 87

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2019-09-02

Miniaturized Microstrip Lowpass Filter with Ultra-Wide Stopband Performance Using Trapezoid Patch Resonators

By Bing Xie and Hongbin Yu
Progress In Electromagnetics Research Letters, Vol. 87, 39-43, 2019
doi:10.2528/PIERL19062606

Abstract

A new miniaturized microstrip lowpass filter with ultra-wide stopband performance using trapezoid patch resonators is investigated. To achieve compact design and ultra-wide band rejection, trapezoid patch resonators are employed in the filter. To further reduce the circuit size of the filter, a meander transmission line is also introduced in the design. A demonstration filter with 3 dB cutoff frequency at 0.50 GHz has been designed, fabricated, and measured. Results indicate that the proposed filter is able to suppress the 26th harmonic response referred to a suppression degree of 15 dB. Furthermore, the proposed filter exhibits a small size of 0.122λg×0.109λg, where λg is the guided wavelength at 0.50 GHz.

Citation


Bing Xie and Hongbin Yu, "Miniaturized Microstrip Lowpass Filter with Ultra-Wide Stopband Performance Using Trapezoid Patch Resonators," Progress In Electromagnetics Research Letters, Vol. 87, 39-43, 2019.
doi:10.2528/PIERL19062606
http://www.jpier.org/PIERL/pier.php?paper=19062606

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