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A 2.4GHz 0.18μm CMOS gain-switched single-end Low Noise Amplifier(LNA) and a passive mixer with no external balun for near-zero-IF(Intermediate Frequency)/RF(Radio Frequency) applications are described.The LNA,fabricated in the 0.18μm 1P6M CMOS technology,adopts a gain-switched technique to increase the linearity and enlarge the dynamic range.The mixer is an IQ-based passive topology.Measurements of the CMOS chip are performed on the FR-4 PCB and the input is matched to 50Ω.Combining LNA and mixer,the front-end measured performances in high gain state are:-15dB of S11,18.5dB of voltage gain,4.6dB of noise figure,-15dBm of ⅡP3,-85dBm to -10dBm dynamic range.The full circuit drains 6mA from a 1.8V supply.
A 2.4 GHz 0.18 μm CMOS gain-switched single-end Low Noise Amplifier (LNA) and a passive mixer with no external balun for near-zero-IF (Intermediate Frequency) / RF (Radio Frequency) applications are described.The LNA, fabricated in the 0.18 μm 1P6M CMOS technology, a gain-switched technique to increase the linearity and enlarge the dynamic range. The mixer is an IQ-based passive topology. Measurement of the CMOS chip are performed on the FR-4 PCB and the input is matched to 50Ω. Combining LNA and mixer, the front-end measured performances in high gain state are: -15dB of S11, 18.5dB of voltage gain, 4.6dB of noise figure, -15dBm of ⅡP3, -85dBm to -10dBm dynamic range.The full circuit drains 6mA from a 1.8V supply.