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ABSTRACT
In this paper, a novel Substrate Integrated Waveguide (SIW) based narrow bandpass filter is presented. In the proposed design, filtering response is achieved by inserting inductive posts in the SIW structure. Simulation of the proposed structure is carried out using commercial software Ansoft High Frequency Structure Simulator (HFSS), which is a three-dimensional full wave solver utilizing the finite element method (FEM). The proposed filter is fabricated on the dielectric material RT duroid 5880 with the dielectric constant ϵr = 2.2, dissipation factor tanδ = 4 × 10−4 and height h = 0.508 mm. The measured insertion and return losses are 1.22 and 18.34 dB, respectively. The measured 3-dB fractional bandwidth (FBW) is 1.475% at the center frequency of 12.2 GHz.
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No potential conflict of interest was reported by the authors.
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Notes on contributors
Keyur Mahant
Keyur Mahant was born in Cambay, India on August 2, 1986. He received B.Tech in Electronicsand communication from C U Shah College of engineering and technology, India in 2008. He has also receivedM.Tech in Communication system from CHARUSAT University, India in 2011. He is currently involved with themicrowave filters, power dividers and circulator design using SIW technology for FMCW Radar Application.
Hiren Mewada
Hiren Mewada is an Associate Professor in the Electronics and Communication Engineering department at C S Patel Institute of Technology, CHARUSAT University, Changa, Gujarat, India. He hasreceived B.E. degree from Sardar Patel University-Vallbhvidhyangar in 2002 and M.Tech. and Ph.D. from S.V.National Institute of Technology, Surat in 2007 and 2014 respectively. His research includes Image and Video Processing and Embedded System.