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1 results

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

  • Anand Kumar, Easha Easha, Debdeep Sarkar, Gaurab Banerjee
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 15 / Issue 9 / November 2023
    Published online by Cambridge University Press:
    21 April 2023, pp. 1579-1591
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  • 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.