UWB bandpass filter using complementary split-ring resonator-based highpass filter and defected ground structure

Zhao Jicong,Zhang Xiangjun,Liu Hai

doi:10.1109/icecc.2011.6066616

UWB bandpass filter using complementary split-ring resonator-based highpass filter and defected ground structure

Zhao Jicong, Zhang Xiangjun + Show 1 more

https://doi.org/10.1109/icecc.2011.6066616

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Publication Date: Sep 1, 2011

Citations: 8

Affiliation: China University of Mining and Technology

#Ultra-wideband Bandpass Filter #Proposed Ultra-wideband Filter + Show 8 more

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Abstract

A compact planar microstrip ultra-wideband (UWB) bandpass filter is presented. The proposed UWB filter is realised by cascading a highpass filter (HPF) and a lowpass filter (LPF). The HPF consists of complementary split-ring resonator (CSRR) with dual C-shaped couplings. The LPF is achieved by a hybrid microstrip and four backside corrugated slots etched on ground plane. Combining these two structures, a new UWB bandpass filter is obtained. Simulated and measured results show that the proposed bandpass filter has a wide bandwidth from 3.0 to 10.7 GHz, and insertion loss is less than 2.0 dB over the whole pass band. It also achieves a wide stop band with 30 dB attenuation up to 18 GHz.

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