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

Abstract

In order to meet the demand for mass production of 77 GHz automotive radar systems, a low cost and high performance 38/77 GHz AlGaAs/InGaAs PHEMT MMIC transmit amplifier with a multiplier has been realized. The chip is packaged in an inexpen- sive conventional non-hermetic package. Excellent power performance is demonstrated with a 15dBm output power and 7dB maximum con- version gain from 38 to 76.5 GHz. 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 Vd = 4V and Ta = 25°C in air. © IEICE 2010.