Simultaneous achievement of high performance and high reliability in a 38/77GHz InGaAs/AlGaAs PHEMT MMIC

Takayuki Hisaka; Hajime Sasaki; Takayuki Katoh; Ko Kanaya; Naohito Yoshida; Anita A. Villanueva; Jesus A del Alamo

doi:10.1587/elex.7.558

LETTER

Simultaneous achievement of high performance and high reliability in a 38/77GHz InGaAs/AlGaAs PHEMT MMIC

Takayuki Hisaka, Hajime Sasaki, Takayuki Katoh, Ko Kanaya, Naohito Yoshida, Anita A. Villanueva, Jesus A del Alamo

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Keywords: PHEMT, reliability, MMIC, humidity, automotive radar systems, non-hermetic package

JOURNAL FREE ACCESS

2010 Volume 7 Issue 8 Pages 558-562

DOI https://doi.org/10.1587/elex.7.558

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Abstract

In order to meet the demand for mass production of 77GHz automotive radar systems, a low cost and high performance 38/77GHz AlGaAs/InGaAs PHEMT MMIC transmit amplifier with a multiplier has been realized. The chip is packaged in an inexpensive conventional non-hermetic package. Excellent power performance is demonstrated with a 15dBm output power and 7dB maximum conversion gain from 38 to 76.5GHz. Also, highly reliable RF operation of a bare MMIC chip is obtained with less than 0.7dB reduction in output power during 10⁶ hr at V_d=4V and T_a=25°C in air.

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