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A wideband low power CML frequency divider suitable for the Ku band has been designed and fabricated in a 90nm CMOS technology. Simulated phase noise and sensitivity curves are validated through on-wafer probe measurements. The maximum operating frequency is 24 GHz while dissipating 2.25 mW from a 1.5 V supply, resulting in a power-delay product of just 11.7 fJ. The divider measures 34 µm × 42 µm,...
This paper reports experimental observations of injection-locking in a CMOS LC frequency divider with direct injection. Several factors are considered including the amplitude of the driving signal, the harmonic content of the driving signal, the switch size, and the forward body bias of the switch. The experiments are performed using a technique to determine rapidly the boundaries of the Arnold tongue...
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