Miniature wideband bandpass filter based on electric and magnetic coupling paths

Asadbeigi, H. and Virdee, Bal Singh (2014) Miniature wideband bandpass filter based on electric and magnetic coupling paths. Electronics Letters, 50 (12). pp. 879-881. ISSN 0013-5194

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Abstract / Description

A compact wideband bandpass filter design that provides a sharp roll-off and low loss performance is presented. The design is based on employing two separate paths between the adjacent resonators constituting the filter, where one path enables electric coupling and the other one magnetic coupling. This structure generates zeros in the filter's transmission response due to the dominance of electric coupling. A fourth-order filter was fabricated and tested. Correlation between the simulated and measured results is remarkable. The measured results confirm the fractional bandwidth of 70% at the centre frequency of 4.58 GHz, insertion-loss is <0.55 dB with a return-loss better than 15 dB in the passband. The filter occupies an area of 4.1 × 17.8 mm, which corresponds to 0.1λo × 0.44λo, where λo is the wavelength of the centre frequency.

Item Type: Article
Uncontrolled Keywords: microwave filters; electromagnetic coupling; resonator filters; band-pass filters; low loss performance; miniature wideband bandpass filter design; frequency 4.58 GHz; adjacent resonators; electric coupling paths; filter transmission response; sharp roll-off performance; magnetic coupling paths; passive filters and other passive networks; waveguide and microwave transmission line components
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Depositing User: Bal Virdee
Date Deposited: 22 Oct 2015 16:41
Last Modified: 21 Apr 2020 11:05


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