Abstract: For portable communication terminals, power amplifiers on monolithic technology are needed. In this paper the design and test of a 60 GHz monolithic power amplifier is presented. The amplifier uses PMHFET monolithic technology with 0.15 $mu@m mushroom gate length and microstrip structures. The chip size is 3mm $MUL 1.5mm. For the amplifier design, a PMHFET nonlinear model based on continuous DC and AC measurements up to V-band was obtained. Models for some of the microstrip discontinuities were obtained from EM simulations. An output power greater than 100mW at 62GHz with more than 10dB gain was achieved. A power added efficiency of 16 percent was measured with V$- DS$/ $EQ 2.5V. !11
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