NDLI: Electric Field Enhancement in 3-D Tapered Helix Antenna for Terahertz Applications

Content Provider	IEEE Xplore Digital Library
Author	Varlamava, V. Palma, F. Nenzi, P. Balucani, M.
Copyright Year	2011
Abstract	A tapered helix monopole as a part of a rectenna for the detection of terahertz radiation is proposed. The antenna consists of a truncated conical helix extruded from a planar spiral and in a nanometric metallic whisker connected to one of its edges. The whisker faces a semiconductor substrate constituting the antenna ground plane. The structure is designed to be combined with a rectifying junction, realized just below the whisker base, which produces the direct conversion of terahertz electromagnetic field into dc current. The figure of merit of the structure is the electric field enhancement factor at the metallic whisker/semiconductor interface. Numerical full-wave simulations show that, for the tapered helix monopole, the field enhancement factor value can be higher than 26 000, which is approximately one order of magnitude greater than previously reported values in the literature. Detailed description of the fabrication process and investigation of antenna performances for different values of geometrical parameters are presented.
Starting Page	360
Ending Page	367
Page Count	8
File Size	1762999
File Format	PDF
ISSN	2156342X
Volume Number	4
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helical antennas Substrates Silicon Rectennas Metals Antenna arrays THz imaging ${\rm E}$-field enhancement rectifying antenna (rectenna) room-temperature detectors submillimeter-wave technology terahertz (THz) THz antennas
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Radiation

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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