Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons based Wideband Bandpass Filter at Microwave Frequency

  • Gaurav Mittal DRDO-Defence Electronics Applications Laboratory, Dehradun – 248 001
  • Nagendra Prasad Pathak Indian Institute of Technology, Roorkee – 247 667
Keywords: Wideband bandpass filter, Mode converter, Plasmonic metamaterial, Spoof surface plasmon polariton, Unit cell

Abstract

This paper presents the wideband bandpass filter (BPF) in the microwave frequency domain. The realisation approach is based on spoof surface plasmon polaritons (SSPPs) phenomenon using plasmonic metamaterial. A novel unit cell is designed for filter design using an LC resonator concept. Then SSPPs BPF is realised using an optimised mode converter and five unit cells. This paper includes a brief design detail of the proposed novel unit cell. The passband of BPF is achieved at approximately 1.20 - 5.80 GHz, 3dB bandwidth is tentatively 4.60 GHz and the insertion loss is less than 2 dB approximately over the passband. The overall dimension of fabricated filter is (90 x 45) mm. A basic schematic of transmission line representation is also proposed to evaluate the BPF structure.

Author Biographies

Gaurav Mittal, DRDO-Defence Electronics Applications Laboratory, Dehradun – 248 001
Mr Gaurav Mittal received his BTech (Electronics & Communication Engineering) from NIT, Jaipur, in 2005 and MTech (Radio Frequency Design & Technology) from IIT, Delhi, 2011. He is currently pursuing his PhD in the Department of Electronics & Communication Engineering at IIT, Roorkee. Presently working as Scientist ‘D’ in AEW&CS-Data Links Group, DRDO-Defence Electronics Application Laboratory, Dehradun. His area of work is to design and development of microwave circuits and systems for defence services.
Nagendra Prasad Pathak, Indian Institute of Technology, Roorkee – 247 667
Dr Nagendra Prasad Pathak received his BTech (Electronics & Telecommunication Engg.) and MTech (Electronics Engg.) from University of Allahabad, in 1996 and 1998 respectively, and PhD from IIT, Delhi, in 2005. Currently he is working as Associate Professor in the Department of ECE, IIT Roorkee, India. He has published more than 110 papers in journals and conferences and has one US patent to his credit. His current research interests are: RF-THz integrated circuits, systems and sensors; Plasmonics, Advanced functional materials for RF-THz integrated circuits.
Published
2018-04-16
How to Cite
Mittal, G., & Pathak, N. (2018). Design, Analysis and Characterisation of Spoof Surface Plasmon Polaritons based Wideband Bandpass Filter at Microwave Frequency. Defence Science Journal, 68(3), 300-306. https://doi.org/10.14429/dsj.68.11981
Section
Electronics & Communication Systems