Abstract
A low-power low-noise amplifier (LNA) utilized a resistive inverter configuration feedback amplifier to achieve the broadband input matching purposes. To achieve low power consumption and high gain, the proposed LNA utilizes a current-reused technique and a splitting-load inductive peaking technique of a resistive-feedback inverter for input matching. Two wideband LNAs are implemented by TSMC 0.18μm CMOS technology. The first LNA operates at 2–6GHz. The minimum noise figure is 3.6dB. The amplifier provides a maximum gain (S21) of 18.5dB while drawing 10.3mW from a 1.5-V supply. This chip area is 1.028×0.921mm2. The second LNA operates at 3.1–10.6GHz. By using self-forward body bias, it can reduce supply voltage as well as save bias current. The minimum noise figure is 4.8dB. The amplifier provides a maximum gain (S21) of 17.8dB while drawing 9.67mW from a 1.2-V supply. This chip area is 1.274×0.771mm2.
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