A 40-GHz Flip-Flop-Based Frequency Divider
Heydari, P.; Mohanavelu, R.
Circuits and Systems II: Express Briefs, IEEE Transactions on
Volume 53, Issue 12, Dec. 2006 Page(s):1358 - 1362
Digital Object Identifier   10.1109/TCSII.2006.885393
Summary:This brief presents the design and implementation of a 40-GHz flip-flop-based frequency divider which incorporates a novel latch topology with two distinct tail current sources and an enabled cross-coupled pair during the tracking mode. The proposed topology will speed up the latch operation and increase the driving capability. It is capable of performing frequency division at 40 GHz without shunt or series peaking inductors. The circuit was fabricated in a 0.18-mum SiGe BiCMOS process, where only CMOS transistors were used. It draws an average current of 5 mA from a 1.8-V supply voltage

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