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ABSTRACT
A new manner of obtaining dual bandpass behaviour in substrate-integrated waveguide (SIW) using a uniplanar combination of composite right/left-handed (CRLH) transmission line and complimentary double split single ring resonator (CDSSRR) is presented and analysed in this paper. The proposed dual band structure has the advantage of miniaturisation due to the presence of both the passbands below the characteristic cutoff frequency of the SIW.A high passband transmission zero overcomes the poor frequency selectivity, and the two resonant frequencies are independently controllable. There are very low insertion losses in both passbands as compared to DGS structures and fabrication simplicity is ensured due to an intact ground. The potential for application of the proposed structure to the design of completely planar miniaturised dual band bandpass metamaterial filters has been verified by fabricating a two-stage filter based on the proposed combination. The measured results are in good agreement with the simulation results.
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Notes on contributors
Jigyasa Sharma
Jigyasa Sharma received her MSc degree in electronics from Banasthali Vidyapeeth, Rajasthan and Ph.D. in Applied Physics (Microwaves) from Delhi College of Engineering (University of Delhi). She worked as Assistant Professor with ABES Engineering College Ghaziabad. Currently, she is a post Doctoral fellow at Delhi Technological University, Delhi with fellowship from University Grants Commission. Her current research activities include metamaterial design, microwave and millimetre wave filter design and substrate integrated waveguides.
Dhirendra Kumar
Dhirendra Kumar received his ME (Electronics & Communication Engineering) and Ph.D. (ECE) from Delhi College of Engineering,(University of Delhi). He is presently Professor and Head of Electronics and Communication Engineering Department at Raj Kumar Goel Institute of Technology, Ghaziabad. His area of research is Microwave Technology and Antenna Engineering.
Asok De
Asok De received the Bachelor of Engineering in Electronics & Telecommunication Engineering, Master of Engineering in Electronics and Telecommunication Engineering from Jadavpur University in 1978 and 1980 respectively. He received his Doctor of Philosophy (Ph.D.) from Indian Institute of Technology Kharagpur in 1986. He is, at present, professor in Electronics and Communication Engineering, Delhi Technological University. His fields of interest are antennas, Numerical techniques in Electromagnetic, Transmission lines etc.