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A compact quasi-Yagi antenna for FMCW radar-on-chip-based through-wall imaging

Published online by Cambridge University Press:  21 April 2023

Anand Kumar Open the ORCID record for Anand Kumar [Opens in a new window] ,
Easha Easha Open the ORCID record for Easha Easha [Opens in a new window] ,
Debdeep Sarkar  and
Gaurab Banerjee
Anand Kumar
Affiliation:
Department of Electrical Communication Engineering, Indian Institute of Science, Bengaluru, KA 560012, India
Easha Easha*
Affiliation:
Department of Electrical Communication Engineering, Indian Institute of Science, Bengaluru, KA 560012, India
Debdeep Sarkar
Affiliation:
Department of Electrical Communication Engineering, Indian Institute of Science, Bengaluru, KA 560012, India
Gaurab Banerjee
Affiliation:
Department of Electrical Communication Engineering, Indian Institute of Science, Bengaluru, KA 560012, India
*
Corresponding author: Easha, Email: [email protected]
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Abstract

A compact quasi-Yagi antenna with a modified ground plane is designed for a through-wall radar on-chip. A slot-based ground plane modification in the proposed antenna results in significant miniaturization with an increase in the impedance bandwidth by 44.62%. The antenna has a high directivity of 9.02 dBi and a front-to-back ratio of 25.76 dB at 2.4 GHz. Based on experiments in real-world deployment scenarios, the performance of the proposed quasi-Yagi antenna is found to be comparable to that of a Vivaldi antenna and a commercial-off-the-shelf horn antenna. Spectrogram-based signatures of a moving person behind a wooden partition and a 40 cm thick masonry wall are successfully obtained using the designed antenna, demonstrating the suitability of the quasi-Yagi antenna for portable applications using a radar-on-chip.

Keywords

AntennaVivaldiQuasi-YagiDirectorsUltra wide-bandUWBchirpthrough-wall radarTWRSpectrogramFMCW
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 9 , November 2023 , pp. 1579 - 1591
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Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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Footnotes

*

The authors have equally contributed to this paper.

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