A Gm-boosted and current peaking wideband merged LNA and mixer

This paper presents the concept and design of a wideband merged LNA and mixer covering the frequency range from 2GHz to 10GHz using a standard 0.18-μ m CMOS technology. Gm-boosting and current bleeding techniques are adopted to make the proposed single stage merged LNA and mixer topology suitable for high conversion gain, low noise and low power consumption operation. A proposed current peaking technique further broadens the working frequency range of the merged front-end up to 10GHz. This merged front-end achieves 20dB conversion gain, a flat noise figure of 6.7~8.5dB over the whole working range and an input IP3 of -1dBm. It consumes only 7.2mW from a 1.8V supply.