On Selection of Optimum Signal Source Impedance for Inductively-Degenerated CMOS LNAS

Noise figure optimization techniques for an inductively-degenerated CMOS LNA with a lossy gate inductor are presented. The techniques allow for integration of the LNA directly with a non -50 Omega antenna thus removing the need for a lossy matching circuitry. The LNA noise temperature is shown to reduce by a factor of 1 when non-standard signal source resistance is used. The LNA analyzed in this paper is targeted for the Canadian large adaptive reflector (CLAR)

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