A source-degenerated cascade LNA, which works at 2.4 GHz and 5.8 GHz simultaneously, is designed for Bluetooth and IEEE wireless LAN 802.11 a/b/g receivers. In this design, 0.15 /spl mu/m GaAs PHEMT technology and embedded passives in an MCM-D substrate are implemented. At 2.4 GHz and 5.8 GHz, this LNA provides 12.2 dB and 15.3 dB gain, respectively. Noise figures of the LNA are 0.53 dB and 1.43 dB, respectively. Good input matching and output matching are also achieved - S11 and S22 at both frequencies are less than -10 dB.