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A Low Power Concurrent Dual-Band Low Noise Amplifier For WLAN Applications

A low power concurrent dual-band low noise amplifier (LNA) which can operate at the 2.4/5.2 GHz WLAN applications has been designed in RF-TSMC 0.18µm CMOS process technology. The proposed design provides a concurrent dual-band LNA with low power consumption, high gain and suitable noise figure and it can consume 2.49 mW with 1.5 V voltage supply. A common source stage with current-reused technique is used to create flat gain over wide bandwidth and reduce power consumption. By applying notch filters at input and output networks of the proposed LNA, the frequency response is shaped. The power gain (S21) of 15.1 dB, input return loss(S11) of –13.3 dB and noise figure (NF) of 2.7 dB are obtained at 2.4 GHz. At 5.2 GHz, it achieves a noise figure (NF) of 3.2 dB, a power gain (S21) of 13 dB and an input return loss (S11) of -12.4 dB.