Miniaturized band-pass filter for broadband applications

M. F. Karim; A. Q. Liu; L. C. Ong; Yong Xin Guo

doi:10.1002/mop.25177

Miniaturized band-pass filter for broadband applications

M. F. Karim, A. Q. Liu, L. C. Ong, Yong Xin Guo

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

This article reports a new compact design of band-pass filter for broadband applications. It has a compact design with two bended short stubs of quarter-wavelength and a connecting stub of half-wavelength, which result in the design of a broadband filter. The filter is fabricated on silicon substrate using surface micromachining process. The fractional bandwidth of band-pass filter reported is around 0.9-4 GHz. The rejection at upper and lower pass band edge is greater than 35 dB, and the insertion loss is 2.4 dB. The area of the novel filter is (λ_g/4)² at the centre frequency of the bandpass, whereas the area of the filter realized using the nonbending stubs and connecting lines is 2(λ_g/4)² for the same band pass characteristics.

Original language	English
Pages (from-to)	1372-1375
Number of pages	4
Journal	Microwave and Optical Technology Letters
Volume	52
Issue number	6
DOIs	https://doi.org/10.1002/mop.25177
Publication status	Published - Jun 2010
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1002/mop.25177

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AB - This article reports a new compact design of band-pass filter for broadband applications. It has a compact design with two bended short stubs of quarter-wavelength and a connecting stub of half-wavelength, which result in the design of a broadband filter. The filter is fabricated on silicon substrate using surface micromachining process. The fractional bandwidth of band-pass filter reported is around 0.9-4 GHz. The rejection at upper and lower pass band edge is greater than 35 dB, and the insertion loss is 2.4 dB. The area of the novel filter is (λg/4)2 at the centre frequency of the bandpass, whereas the area of the filter realized using the nonbending stubs and connecting lines is 2(λg/4)2 for the same band pass characteristics.

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Miniaturized band-pass filter for broadband applications

Abstract

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