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Compact high-efficiency pentahedron and quatrefoil shape antennas with enhanced gain for GSM1800, 3G, 4G-LTE energy harvesting applications

Published online by Cambridge University Press:  29 May 2020

Geriki Polaiah Open the ORCID record for Geriki Polaiah [Opens in a new window] ,
K. Krishnamoorthy  and
Muralidhar Kulkarni
Geriki Polaiah*
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology Karnataka Surathkal, Mangalore575025, India
K. Krishnamoorthy
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology Karnataka Surathkal, Mangalore575025, India
Muralidhar Kulkarni
Affiliation:
Department of Electronics and Communication Engineering, National Institute of Technology Karnataka Surathkal, Mangalore575025, India
*
Author for correspondence: Geriki Polaiah, E-mail: polaiahgeriki@gmail.com
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Abstract

In this paper, three compact, high-efficiency, gain enhanced antennas, and corresponding rectifiers have been proposed for GSM1800, 3G, and 4G-LTE energy harvesting applications. The inverted L-stub is placed on the ground plane of the monopole antenna to get the desired frequency band of GSM1800 MHz. The feed length variation method has been adopted for the slot antennas to obtain the required frequency of 3G and 4G-LTE cellular bands. The performance of antennas is analyzed with the inverted L-stub, feed length variation, and the reflector distance. The maximum gain achieved with the reflector positioned at a distance of λ/4 from the antenna backside is three times greater than the gain obtained without the reflector. The prototype antennas and rectifiers have been simulated, fabricated, measured various parameters, and compared with the simulation results. The antennas provide more than 82% radiation efficiency and an enhanced gain of greater than 5.6 dB. The peak efficiency of rectifiers of more than 30% has been achieved. The aforementioned three antennas are integrated with their corresponding rectifiers for operating at 1.8, 2.1, and 2.3 GHz frequencies. The proposed rectennas are formidably suitable for the reception of RF power from the cellular bands.

Keywords

Cellular bandsenhanced gainquatrefoil shape antennasrectennareflector
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 3 , April 2021 , pp. 274 - 285
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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