140 Gb/s Serializer Using Clock Doublers in 90 nm SiGe Technology

Many design challenges exist in achieving high frequency clocking for high-speed applications. This paper describes a new clock distribution technique and clocking approach with the use of clock doublers in close proximity to sub-circuits to achieve higher data rates, and in many cases, reduce design complexity and power in serializers. A half-rate 4:1 serializer using this unique frequency doubli...