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Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 53-223
Full Name: Guo B.
Position: Ph.D. Candidate
Age: ON
Sex: Male
Address: No. 2006, Xiyuan Rd., West High-tech District, Chengdu
Country: CHINA
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E-mail address: benqingguo@hotmail.com
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Title of the Paper: Noise Analysis for Current-commutating CMOS Mixers in Submicron Technology
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Number of paper pages: 10
Abstract: Abstract: - A unified noise figure expression incorporating the thermal noise and flicker noise has been proposed for current-commutating CMOS mixers. Based on the derived conversion functions with output resistance effect, the noise transforming factors for different stages are numerically computed to rigorously describe the noise output. The subthreshold conductance has also been taken into account by utilizing the latest continuous noise model and the simplified MOSFET I-V model. As a result, the frequency-dependent characteristic of noise expression is of competency for explaining the flicker noise mechanism, thus can be directly applied to active CMOS mixers with different IF characteristics. And good agreement is observed between predictions and measurements.
Keywords: CMOS mixers; Noise; Active mixers; Current-commutating; Direct conversion receiver; Gilbert
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