A 4.7 GHz 4.4mW SiGe Dual-Modulus Prescaler

This paper presents a static dual-modulus prescaler as needed for mobile communications with division ratios of 128 and 129. It is manufactured in a 0.5 μm 80GHz-fT SiGe bipolar technology. The circuit is optimized for low power consumption and operates up to 4.7 GHz, consuming 4.4mW from a 2.3V supply inclusive driving a capacitive load of 8 pF.