Optimization of parallel coupled bandpass filter with CPW for UWB application

Goyal, Shally; Kushwah, Vivek Singh; Thakre, Vandana Vikas

doi:10.1063/5.0178621

AIP Conference Proceedings

2024

DOI: 10.1063/5.0178621

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Optimization of parallel coupled bandpass filter with CPW for UWB application

Shally Goyal,

Vivek Singh Kushwah,

Vandana Vikas Thakre

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2024

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Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line

Liu,

Yang,

Cai

et al. 2024

Journal of Applied Physics

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In this work, we present a simple design of a compact and miniaturized wideband bandpass filter (BPF) based on substrate integrated waveguide (SIW) and microstrip line. Through the order extension, the filtering effect and the order of the Chebyshev response of the designed BPF can be indirectly controlled by preserving square notches (SNs) on the SIW. By introducing one or two SNs in the SIW structure, the resonance frequencies of different modes can be controlled, thus achieving dual- and tri-mode BPFs with wideband and low insert loss. The working principle of the designed BPFs was illustrated by modal analysis, field distribution, and equivalent circuit theory. Based on this, the dual- and tri-mode BPFs with center frequencies of 6.8 and 7 GHz were designed and demonstrated numerically. Further experimental results indicate that the proposed tri-mode BPF has low insertion loss (0.25 dB), compact size (0.27λg2), and wideband bandwidth (60%). In addition, the tri-mode BPF achieves a broadband out-of-band rejection of 1.5f0 (f0 is the center resonance frequency) below the −10 dB level, making it highly promising for various applications in related fields.

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Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line

Liu,

Yang,

Cai

et al. 2024

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

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Optimization of parallel coupled bandpass filter with CPW for UWB application

Cited by 1 publication

References 12 publications

Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line

Compact and miniaturized wideband bandpass filter based on substrate integrated waveguide and microstrip line

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