What is it about?

This paper is targeted towards designing and analyzing the X and Ku band receiving antenna using the code block software and advanced design system (ADS) simulation tool for energy harvesting in order to satisfy the energy needs of autonomous wireless sensors on board of geostationary satellite for structural health monitoring of the satellite panels where weight, cost, size and efficiency are the principal space antenna parameters accounted. The energy harvester generally consists of receiving antenna which harvests and scavenge the circumambient electromagnetic field and inputs to the rectifier in order to power the sensors. In this paper, a compact, wideband semi-ellipse patch antenna backed with defected ground structure (DGS) is presented. The antenna compactness is obtained by truncating the elliptical patch to form a semi-ellipse patch without compromising the band of interest which reduces from launching weight and cost. The proposed antenna covers X and Ku band for voltage standing wave ratio (VSWR) ≤ 2 with a maximum return loss of 28.75 dB, the efficiency of 95 %, the gain of 9.6 dBi and directivity of 14 dBi which makes the proposed antenna compatible to use with the rectifier in order to satisfy the energy needs of wireless sensors.

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Why is it important?

The design, analysis, and optimization of the compact receiving antenna operating at X and Ku band utilizing code block software and EM simulation tool are done along with the parametric analysis of the performance parameters of the proposed antenna is reported in this paper. The proposed antenna achieves compactness with overall antenna size of 24 mm x 15.18 mm x 0.5 mm and high performance in terms of wider bandwidth from 8.156 GHz to 18.36 GHz with return loss (S11) of greater than 10 dB, voltage standing wave ratio (VSWR) ≤ 2, peak antenna efficiency (η) of 95 %, input impedance nearly 50 Ω, group delay around 125ns, peak antenna power gain of 9.6 dBi and directive gain of 15 dBi when compared to recently developed antennas claims that the proposed antenna can be used with energy harvester for satellite health monitoring system is detailed in this paper. The proposed antenna has low volume of 1.95 g (antenna with soldered SMA connector), low cost of 300 INR/Unit (fabrication cost of antenna), small size and high efficiency of 95 % which make it suitable for use in the proposed satellite application.


Writing this article was a great pleasure as it has co-author with whom I have had long standing collaborations. Complying the energy needs of the wireless sensors used in the satellite is considered as a major challenging requirement in space research is addressed in this article.

Revathy Srinivasan
Sri Venkateswara College of Engineering

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This page is a summary of: High Performance Antenna for Energy Harvesting in Satellite Health Monitoring System, IET Communications, September 2019, the Institution of Engineering and Technology (the IET), DOI: 10.1049/iet-com.2019.0366.
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