Design of a reconfigurable Low Noise Amplifier for IMT-A and UWB systems

A reconfigurable Low Noise Amplifier works on the bands of 4.2–4.8GHz IMT-A and 3.4–3.6GHz UWB is presented in this paper. The proposed LNA is based on inductive source degenerated cascade structure while switched capacitors and switched circuit are added to realize the dual-band operation. The simulation results show that, in the band of 3.4–3.6GHz, the NF is lower than 2.3dB, the gain is higher than 17dB, and in the band of 4.2–4.8GHz, the NF is lower than 2.6dB, the gain is higher than 19dB. According to the simulation results, the proposed LNA achieves dual-band operation, which proves the feasibility of the proposed topology. The LNA is fabricated in TSMC 0.13-μm process while consuming 15.4mA from a 1.2V supply.