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ABSTRACT
The tape-helix model of analysis of a helix surrounded by a double-negative metamaterial tube in a metal envelope was developed adding a rigor to the earlier analysis that had used the simple sheath-helix model. The analyses using these two models were compared and validated against CST simulation. The structure supporting backward waves opens up the potential application of the structure in backward-wave vacuum electron device.
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No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Amit K. Varshney
Amit K. Varshney is Assistant Professor at SKFGI, Mankundu, and received his BTech degree from West Bengal Technical University and MTech degree (with Gold Medal) from Burdwan University. He has registered for PhD at Kalyani University. His research interests are in the area of vacuum electron devices and antennas.
Raktim Guha
Raktim Guha is Senior Project Fellow at CSIR-CEERI, Pilani, and received his BTech and MTech degrees from West Bengal Technical University. His research interests are in the area of space-TWTs, multi-beam klystrons and metamaterial-assisted vacuum electron devices.
Sushanta Biswas
Dr Sushanta Biswas was felicitated with a PhD in engineering from Jadavpur University in the year 2004. He has obtained his ME from Jadavpur University in the year 1995. He earned his BE degree in Electronics and Telecommunication Engineering from Bengal Engineering College (presently known as Bengal Engineering and Science University, Shibpur) in the year 1990. He is presently working as Scientific Officer (Associate Professor Rank) at the Department of Engineering & Technological Studies, University of Kalyani. His area of research includes Microstrip Antenna, Microstrip Filter, Frequency Selective Surfaces, and Artificial Neural Network. He has contributed to numerous research articles in various journals and conferences of repute.
Partha Pratim Sarkar
Dr Partha Pratim Sarkar was felicitated with a PhD in engineering from Jadavpur University in the year 2002. He has obtained his ME from Jadavpur University in the year 1994. He earned his BE degree in Electronics and Telecommunication Engineering from Bengal Engineering College (presently known as Bengal Engineering and Science University/Indian Institute of Engineering Science and Technology, Shibpur) in the year 1991. He is presently working in the rank of Professor since January 2005 at the Department of Engineering & Technological Studies, University of Kalyani. His area of research includes Microstrip Antenna, Microstrip Filter, Frequency Selective Surfaces and Artificial Neural Network. He has contributed around 294 research articles in various journals and conferences of repute. He is also a life Fellow of IETE and IE (India).
Subrata K. Datta
Subrata K. Datta (SM) is Scientist at DRDO-MTRDC, Bangalore, and received his PhD degree from IIT-BHU, Varanasi. His research and publications are in the area of vacuum electron devices. He is recipient of a number of national awards in this area.
B. N. Basu
B. N. Basu (M'18) is Adjunct Professor at SKFGI, Mankundu, superannuated as Professor and Head of Electronics Engineering Department, IIT-BHU, Varanasi, and received his PhD degree from Calcutta University. He has authored/co-authored a number of books and research papers in journals/monograph chapters in the area of vacuum electron devices. He is recipient of a number of national awards in this area.