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A low-power full-band 802.11abg transceiver in 0.15µm CMOS technology is presented. It shows 4.4/4dB low noise figures in 2.4/5GHz receiver chains. An on-chip PA (power amplifier) delivers 20dBm output P 1dB . -40 to 140 C operation temperature is achieved by sensing technique. Onchip power detector and transmitter to receiver feedback loop estimate the I/Q imbalance, and a new I/Q compensation scheme is implemented in LO (local oscillator) rather than signal paths. It consumes 65/75mA for 2.4/5GHz receive modes and 200/107mA for 2.4/5GHz transmit modes respectively. The low power consumption, high integration and robustness make this transceiver suitable for portable applications.Index Termstransceivers, on-chip PA, I/Q calibration, temperature detect, power detect.

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