A W-Band 4-GHz BW Multiuser Interference-Tolerant Radar with 28-nm CMOS Front Ends

Rulin Huang, Ching Wen Chiang, Chia Jen Liang, Yanghyo Kim, Yen Cheng Kuan, Mau Chung Frank Chang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This letter presents a 89-93-GHz interference-tolerant radar supporting simultaneous operations of multiple users over a 4-GHz bandwidth. Radar interferences resulted from concurrent transmissions of multiple users can be effectively eliminated by employing frequency hopping (FH) on each radar with a corresponding one-coincidence code. The superheterodyne architecture is adopted for the radar front ends to ensure the image rejection and LO leakage levels required by the FH agility. Implemented in 28-nm CMOS technology, the transmitter (TX) provides an output power of 7.1 dBm, and the receiver (RX) achieves a noise figure of 10 dB and -12 dBm 1-dB compression point over the entire band of interest. In addition, a cost-effective TX (RX) module with the CMOS TX (RX) chip and a Rogers patch antenna is developed for over-the-air verifications. The measured range resolution is 3.75 cm. Under a 0.9-V supply, the CMOS front ends consume 273 mW and occupy 2.75 mm2.

Original languageEnglish
Article number9203840
Pages (from-to)414-417
Number of pages4
JournalIEEE Solid-State Circuits Letters
Volume3
DOIs
StatePublished - 2020

Keywords

  • CMOS radar
  • W-band
  • code division
  • interference tolerant
  • multiuser radar

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