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International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 589459, 10 pages
Research Article

Equilateral Triangular Dielectric Resonator Nantenna at Optical Frequencies for Energy Harvesting

1KACST Technology Innovation Center in Radio Frequency and Photonics for the e-Society (RFTONICS), King Saud University, Riyadh 11451, Saudi Arabia
2Institute of Electronics and Telecommunications of Rennes University (IETR), University of Rennes 1, 35700 Rennes, France
3Electrical Engineering Department, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia

Received 7 May 2015; Revised 20 August 2015; Accepted 31 August 2015

Academic Editor: Giuseppe Mazzarella

Copyright © 2015 Waleed Tariq Sethi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The last decade has witnessed a remarkable growth in the telecommunication industry. With the introduction of smart gadgets, the demand for high data rate and bandwidth for wireless applications have increased exponentially at the cost of exponential consumption of energy. The latter is pushing the research and industry communities to devise green communication solutions that require the design of energy saving devices and techniques in one part and ambient energy harvesting techniques in the other part. With the advent of nanocomponents fabrication technology, researchers are now able to tap into the THz frequency regime and fabricate optical low profile antennas at a nanoscale. Optical antennas have proved their potential and are revolutionizing a class of novel optical detectors, interconnectors, sensors, and energy harvesting related fields. Authors in this paper propose an equilateral triangular dielectric resonator nantenna (ETDRNA) working at 193.5 THz standard optical frequency. The simulated antenna achieves an impedance bandwidth from 192.3 THz to 197.3 THz with an end-fire directivity of 8.6 dBi, covering the entire standard optical window of C-band. Numerical demonstrations prove the efficiency of the nantenna at the frequencies of interest, making it a viable candidate for future green energy harvesting and high speed optical applications.