Abstract
A 0.13-μm CMOS 2.4-GHz low-noise balun-mixer is proposed, where a noise-canceling transconductance stage is adopted for low-noise characteristics. A current-bleeding circuit with an LC resonator is also adopted to further improve the noise figure of the proposed balun-mixer, without additional DC power consumption. The measured results show a DSB NF of 5.5dB over output IF frequency ranges of 10 to 100MHz, a conversion gain of 19dB, and an input P1dB of -16dBm. The proposed balun-mixer is implemented in 0.13-μm CMOS technology and consumes only 4.5mA from a 1.5-V supply voltage.
