Abstract
This paper presents the design of a single ended wideband LNA utilizing reactive elements at the input and output for impedance matching. It has been shown through simulations that the LNA architecture utilizes components similar to a narrowband design but achieves a much wider bandwidth with high gain and low noise figure. The single ended wideband LNA is based on 0.13-μm CMOS technology from IBM and simulated in Cadence SpectreRF. The LNA operates for frequencies approximately between 4–6 GHz. The maximum gain of the LNA is 29.6 dB and average NF is 2.6 dB. The linearity analysis shows the input referred PldB and IIP3 of −25.07 dBm and −13.47 dBm respectively. The two stage wideband LNA consumes only 13.9 mA from a 1.5 V supply. It shows good comparison with other LNAs designed for 4–6 GHz range with a much higher gain and smaller NF.
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