FMCW Radar with Enhanced Resolution and Processing Time by Beam Switching

Pascual Hilario Re, Davide Comite, Symon Podilchak, Cristian Alistarh, George Goussetis, Mathini Sellathurai, John Thompson, Jaesup Lee

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We present the design of a novel K-band radar architecture for short-range target detection. Applications include direction finding systems and automotive radar. The developed system is compact and low cost and employs substrate-integrated-waveguide (SIW) antenna arrays and a 4×4 Butler matrix (BM) beamformer. In particular, the proposed radar transmits a frequency modulated continuous-wave (FMCW) signal at 24 GHz, scanning the horizontal plane by switching the four input ports of the BM in time. Also, in conjunction with a new processing method for the received radar signals, the architecture is able to provide enhanced resolution at reduced computational burden and when compared to more standard single-input multiple-output (SIMO) and multiple-input multiple-output (MIMO) systems. The radar performance has also been measured in an anechoic chamber and results have been analyzed by illuminating and identifying test targets which are 2∘ apart, while also making comparisons to SIMO and MIMO FMCW radars. Moreover, the proposed radar architecture, by appropriate design, can also be scaled to operate at other microwave and millimeter-wave frequencies, while also providing a computationally efficient multi-channel radar signal processing platform.
Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalIEEE Open Journal of Antennas and Propagation
Early online date16 Jul 2021
Publication statusE-pub ahead of print - 16 Jul 2021

Keywords / Materials (for Non-textual outputs)

  • Automotive radar
  • multiple-input multiple-output (MIMO) radar
  • Short-range radar (SRR)
  • Substrate-integrated waveguide (SIW)
  • Butler Matrix


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