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Type: Journal article
Title: Experimental demonstration of reflectarray antennas at terahertz frequencies
Author: Niu, T.
Withayachumnankul, W.
Ung, B.
Meneske, H.
Bhaskaran, M.
Sriram, S.
Fumeaux, C.
Citation: Optics Express, 2013; 21(3):2875-2889
Publisher: Optical Soc Amer
Issue Date: 2013
ISSN: 1094-4087
Statement of
Tiaoming Niu, Withawat Withayachumnankul, Benjamin S.-Y. Ung, Hakan Menekse, Madhu Bhaskaran, Sharath Sriram, and Christophe Fumeaux
Abstract: Reflectarrays composed of resonant microstrip gold patches on a dielectric substrate are demonstrated for operation at terahertz frequencies. Based on the relation between the patch size and the reflection phase, a progressive phase distribution is implemented on the patch array to create a reflector able to deflect an incident beam towards a predefined angle off the specular direction. In order to confirm the validity of the design, a set of reflectarrays each with periodically distributed 360 × 360 patch elements are fabricated and measured. The experimental results obtained through terahertz time-domain spectroscopy (THz-TDS) show that up to nearly 80% of the incident amplitude is deflected into the desired direction at an operation frequency close to 1 THz. The radiation patterns of the reflectarray in TM and TE polarizations are also obtained at different frequencies. This work presents an attractive concept for developing components able to efficiently manipulate terahertz radiation for emerging terahertz communications.
Keywords: Refractometry
Surface Plasmon Resonance
Equipment Design
Equipment Failure Analysis
Terahertz Radiation
Rights: © 2013 OSA
DOI: 10.1364/OE.21.002875
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Electrical and Electronic Engineering publications

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