A Compact, Low Power Consumption, and Highly Sensitive 95 GHz Doppler Radar

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A Compact, Low Power Consumption, and Highly Sensitive 95 GHz Doppler Radar

Journal Article (2020)

Author(s)

Ken B. Cooper (California Institute of Technology)

Raquel Rodriguez Monje (California Institute of Technology)

Robert J. Dengler (California Institute of Technology)

Corey J. Cochrane (California Institute of Technology)

Maria Alonso Del Pino (California Institute of Technology)

Adrian Tang (California Institute of Technology)

Tristan Ossama El Bouayadi (Inc.)

Omkar Pradhan (California Institute of Technology)

Affiliation

External organisation

Doppler radar Millimeter wave radar Meteorological radar

DOI related publication

https://doi.org/10.1109/JSEN.2020.2972535 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:f45bba36-29a3-4aa1-939d-c279382f5317

More Info

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Publication Year

2020

Language

English

Affiliation

External organisation

Journal title

IEEE Sensors Journal

Issue number

11

Volume number

20

Article number

9003525

Pages (from-to)

5865-5875

Downloads counter

231

Abstract

We report on the architecture and performance of a highly sensitive 95 GHz Doppler radar instrument with 0.6Watt transmit power designed for low power consumption and small size. The radar's sensitivity is validated using a calibration target, and its remote sensing capabilities are demonstrated through the detection of clouds, rain, insects, and distant vehicles. The radar uses a frequency-modulated continuous-wave (FMCW) waveform, a single antenna with ultra-high-isolation quasioptical transmit/receive duplexing, an InP low-noise amplifier for receiving, and a GaN power amplifier for transmitting. A DC power consumption of 22 W for the RF and digital subsystems is achieved, in part, by a combination of a power-efficient waveform generation/detection and signal processing board and a CMOS-based system-on-chip W-band oscillator. Excluding power supplies and a computer interface, the radar system mass is under 6 kg, making it attractive for future deployment from platforms with constrained accommodation resources.