90 GHz operation of a novel dynamic frequency divider using InP/InGaAs HBTs

S Tsunashima,H Nakajima,N Watanabe,H Sugahara,K Kurishima,T Enoki,E Sano,M Ida

doi:10.1109/iciprm.2002.1014094

90 GHz operation of a novel dynamic frequency divider using InP/InGaAs HBTs

S Tsunashima, H Nakajima + Show 6 more

https://doi.org/10.1109/iciprm.2002.1014094

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Publication Date: Aug 7, 2002

Citations: 14

Affiliation: NTT (Japan), Hokkaido University

#Dynamic Frequency Divider #Digital Frequency Divider + Show 8 more

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Abstract

We present 90 GHz operation of a 1/8 digital frequency divider IC fabricated with InP/InGaAs HBTs having a current gain cutoff frequency (f/sub /spl tau//) of over 150 GHz and a maximum oscillation frequency (f/sub max/) of over 200 GHz. To our knowledge, this toggle frequency is the highest ever reported for digital frequency dividers. A novel dynamic toggle flip-flop (T-FF) was employed in order to achieve ultrafast operation.

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