A Delay-Correlating Direct-Sequence Spread-Spectrum (DS/SS) Radar System-on-Chip Operating at 183-205 GHz in 28 nm CMOS

Adrian Tang*, Robert Carey, Gabriel Virbila, Yan Zhang, Rulin Huang, Mau Chung Frank Chang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

This article presents delay-correlating direct-sequence spread-spectrum (DS/SS) radars at mm-wave frequencies, which transmit a bit sequence waveform instead of frequency chirps or pulses to estimate time of flight between the radar and scatterers within a scene. The simple modulation and demodulation architecture of the proposed DS/SS radar enables wideband and high-resolution radar measurements without the need for broadband A/D and D/A conversion, making the delay-correlating approach attractive for low-power radar applications. The demonstrated radar system operates at 205 GHz and offers a 3.0 cm range resolution while consuming 614 mW of dc power.

Original languageEnglish
Article number8968616
Pages (from-to)212-220
Number of pages9
JournalIEEE Transactions on Terahertz Science and Technology
Volume10
Issue number2
DOIs
StatePublished - Mar 2020

Keywords

  • CMOS
  • direct-sequence spread-spectrum (DS/SS)
  • millimeter wave
  • radar

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