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A 24 GHz monolithic low-noise amplifier (LNA) is implemented in a standard 0.18 μm CMOS technology. Measurements show a gain of 12.86 dB and a noise figure of 5.6 dB at 23.5 GHz. The input and output return losses are better than 11 dB and 22 dB across the 22-29 GHz span, respectively. The operation frequency of 24 GHz is believed to be the highest reported for LNA in a standard CMOS technology.