A single chip 2-20 GHz T/R module

A single chip 2-20-GHz transmit/receive (T/R) module has been demonstrated. This MMIC (monolithic microwave integrated circuit) included a four-stage power amplifier chain, a four-stage low-noise amplifier chain, and two T/R switches. A selective ion implantation process was used. One implant profile was optimized for low-noise operation, and a second was optimized for power performance. All circuits were designed to be relatively insensitive to process variations to ensure adequate yield, despite the complexity of the chip. Distributed amplifiers were used throughout, and the T/R switches used a standard series-shunt FET configuration. All circuits were miniaturized to keep the total chip size small. The entire T/R is only 0.143 in*0.193 in (3.6 mm*4.9 mm).<
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