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A 40-GHz frequency divider in 0.18-μm CMOS technology

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2 Author(s)
J. Lee ; Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA ; B. Razavi

An analysis of regenerative dividers predicts the required phase shift or selectivity for proper operation. A divider topology is introduced that employs resonance techniques by means of on-chip spiral inductors to tune out the device capacitances. Configured as two cascaded ÷2 stages, the circuit achieves a frequency range of 2.3 GHz at 40 GHz while consuming 31 mW from a 2.5-V supply.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:39 ,  Issue: 4 )