A 40GHz 2.1V Static Frequency Divider in SiGe Using a Low-Voltage Latch Topology

摘要

An alternative low-voltage latch topology based on switched emitter followers is proposed, and its characteristics are compared to a traditional current-mode latch. A static 1:8 frequency divider based on this latch is implemented in a SiGe BiCMOS technology with f{sub}T=120GHz. The divider operates at a maximum frequency of 42GHz and consumes 160mW from a 2.1V power supply.