85MHz BICMOS IF Stage for Mobile Communication

A second-order current-mode bandpass filter employing current controlled conveyors and implemented in BICMOS technology is presented. Both high center frequency f 0 and high Q value have been achieved with low power consumption. A 85MHz IF stage for a mobile communication terminal, based on the cascade of two former cells, has been realized. Measurements results are obtained in good accordance with simulation ones. The active area of the 4th order filter is 0.8mm 2 and its static power consumption is 25mW under ±2.5V supplies.