A 100-MHz CMOS wide band IFamplifie

Abstract — When the data rates of communication systems increase, wideband IF amplifiers are needed. It is also possible to use a single wideband intermediate frequency (IF) amplifier for a radio band with several narrow-band channels of varying strengths. The linearity is then critical, if intermodulation prod-ucts are not to disturb weak channels. We try to find a topology for this new amplifier application, suitable for integration in a standard CMOS process. To get low distortion, we use an output stage with high linearity, which is further linearized by feedback in a double-nested Miller config-uration. A 0.8-m standard CMOS IF amplifier design with low distor-tion up to 20 MHz is presented. I