Single 2.2 V operation MMIC power amplifier utilizing SrTiO/sub 3/ capacitors for 2.4 GHz wireless communication systems

This paper describes single 2.2 V operation of a two-stage MMIC power amplifier for 2.4 GHz wireless local area network applications. The MMIC with 0.76/spl times/ 0.96 mm/sup 2/ area is composed of n-AlGaAs/InGaAs/n-AlGaAs FETs with a shallow threshold voltage of -0.24 V and SrTiO/sub 3/ capacitors. The capacitors with a high relative dielectric constant of 180 were employed. Under single 2.2 V operation, the developed MMIC delivered an output power of 22.6 dBm (182 mW) and a power-added efficiency of 33.2% with an associated gain of 22.7 dB at 2.48 GHz.