This paper describes GaAs MMICs used in wireless LANs for spread spect
rum communications on the ISM band. Both the transmitter and the recei
ver are incorporated inside the MMIC. In our experiment using prototyp
es at a center frequency of 2.45 GHz, the transmitter has a saturation
output power of 21.4 dBm and the total current consumption is 131.2 m
A. The receiver has a noise figure of 3.2 dB and a gain of 12.2 dB.