DEVICE TECHNOLOGYThis paper presents a compact and highly reliable 76-GHz MMIC chip set for a low cost automotive radar. The chip set consisting of a 38-GHz amplifier with 15.2dBm output power, a transmitter MMIC with 1 l.OdBm output power and a receiver MMIC with -4.6dB conversion gain were successfully demonstrated.

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Ka-band ultra low-noise three stage monolithic amplifier has been developed using O.lSum T-shaped gate pseudomorphic heterojunction FETs (pHJFETs). The noise figure of the developed amplifier are less than 1.5dB with an associated gain of 20dB in 27-31GHz band.

A new grey-box modeling method via continuous-time model is proposed, where a priori knowledge on physical parameters is expressed in a deterministic manner. It is shown that the proposed method is more effective for smaller data case through numerical examples.