A 142 GHz 4/5 Dual-Modulus Prescaler for Wideband and Low Noise Frequency Synthesizers in 130 nm SiGe:C BiCMOS

In this contribution, the simulation and measurement results of a 4/5 dual-modulus prescaler, operating from DC to 142 GHz with a power consumption of 144 mW, are presented. For a division ratio of 4, the maximum operation frequency of 166 GHz is even higher. The prescaler is the core of a fully programmable dual-modulus frequency divider, which is a crucial component of modern measurement systems. The effect of the physical length and the resulting internal delays on the prescalerâ€™s performance is analyzed. Furthermore, the voltage level of the fully differential emitter-coupled logic is optimized in terms of phase noise and maximum operating frequency. The MMIC is realized in a 130 nm SiGe:C BiCMOS technology with fT/fmax = 470/650 GHz.