A 0.25 $\mu$ m InP DHBT 200 GHz+ Static Frequency Divider

Static frequency dividers are widely used technology performance benchmark circuits. Using a 0.25 μm 530 GHz f
_T
/600 GHz+ f
_max
InP DHBT process, a static frequency divider circuit has been designed, fabricated, and measured to operate up to 200.6 GHz. The divide-by-two core flip-flop dissipates 228 mW. Techniques used for the divider design optimization and for selecting variants to maximize performance across process changes are also discussed.