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arXiv · 2208.11034

A Compact Quasi-Yagi Antenna for FMCW Radar-on-Chip based Through-Wall Imaging

Anand Kumar·Easha·Debdeep Sarkar·Gaurab Banerjee
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Abstract

A compact quasi-Yagi antenna with a modified ground plane is designed for a through-wall radar (TWR) 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 (COTS) 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.

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Anand Kumar, Easha, Debdeep Sarkar, Gaurab Banerjee. 2022-08-23. A Compact Quasi-Yagi Antenna for FMCW Radar-on-Chip based Through-Wall Imaging. https://arxiv.org/abs/2208.11034

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