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Feed-Forward Correction Technique for a High Linearity WiMAX Differential Low Noise Amplifier

A high linearity differential low noise amplifier (LNA) is designed for WiMAX applications. A feed-forward correction circuit is applied to improve the linearity of LNA. The LNA achieves a power gain of 15.2 dB, a noise figure of 2.95 dB, an input referred third order intercept point of 3 dBm with power dissipation of 17.03 mW from a 1.8 V supply voltage. The chip is fabricated in TSMC 0.18-mum CMOS technology. The chip area occupies 1.13 x 0.99 mm2.