A 79GHz UWB pulse-compression vehicular radar in 90nm CMOS

A 79-GHz fully-integrated bidirectional pulse radar system with injection-regenerative receiver is demonstrated in 65 nm CMOS. The novel design for the impedance transformation of PA/LNA improves the TX efficiency and RX noise figure significantly in comparison with the traditional RF switch. The injection-regenerative oscillator is proposed to increase the receiver gain as well as the system efficiency. The measured TX peak P out and RX conversion gain are 9.2 dBm and 42 dB, respectively. Using an 8×8 patch antenna array with on board matching network to compensate bonding wire effect, the TX EIRP is 25 dBm with the beamwidth of 11.5° and 10° in E and H plane, respectively. The distance measurement for 0.3~1.5 m with the maximum error of less than 7.2 mm. The overall dc consumption is only 107 mW from a single 1.2 V supply under pulse modulation with 0.1% duty cycle.

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Ultra-wideband radar reflectivity of a drone in millimeter wave band

Nakamura

Hadama

Kajiwara

2018

IEICE ComEX

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UWB radar in millimeter wave band (79 GHz) can provide very high range resolution since it can occupy a wider band than quasi-millimeter wave band (24/26 GHz). This letter proposes the use of a millimeter wave UWB radar for drone detection and experimentally investigates the reflection characteristics of a typical drone in the millimeter wave band compared with that in the quasi-millimeter wave band. First, the drone's radar cross section (RCS) is clarified. Next, radar echo characteristics for a flying drone are discussed. As a result, we have confirmed that the RCS in the millimeter wave band is larger than that in the quasi-millimeter wave band and the echoes from the rotors, which are a unique feature of drone, can be observed.

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A 79GHz UWB pulse-compression vehicular radar in 90nm CMOS

Cited by 3 publications

References 2 publications

A fully-integrated 77-GHz radar transceiver using two programmable pseudo-random sequences

A fully-integrated 77-GHz radar transceiver using two programmable pseudo-random sequences

A 79-GHz bidirectional pulse radar system with injection-regenerative receiver in 65 nm CMOS

Ultra-wideband radar reflectivity of a drone in millimeter wave band

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