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This paper presents a novel bootstrapped frequency doubler, which is used to implement a wideband frequency multiplier-by 8 with balanced differential output. In terms of conversion gain, common mode rejection, and output balance, the proposed frequency doubler achieved better performance than the conventional Gilbert-cell frequency doubler by adopting the proposed bootstrapping technique. Wideband...
This paper presents a wideband frequency multiply-by-8 IC for F band FMCW radar application. It combines an active balun, three push-push doubler stages and a buffer stage. The doubler stage uses a transformer for single to differential conversion, with good output balance and compact size. The measured 3 dB output bandwidth of the multiplier is about 30 GHz from 110 GHz to 140 GHz with low harmonics...
Multi-nodal spectrum sensing is a promising approach to robust cognitive radio networks, which provides increased adaptability to database-anchored sharing approaches. Yet its commercially viable implementation requires compact, low-cost, flexible sensing receivers. This paper describes an implementation approach relying on a fully differential 0.25 µm SiGe:C BiCMOS low-noise down-converter RFIC in...
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