A precisely gain controlled RF front end for T-DMB tuner ICs
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概要
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A precisely gain controlled RF front end is developed for T-DMB tuner IC applications. A precise RF gain control with 50dB dynamic range is achieved in RF VGA by employing a capacitive ladder type attenuator. The proposed method enables us to design and analyze very fine gain step VGA concretely. Implemented in 0.13µm CMOS, the tuner RF front end consumes 9.7mA at 1.2V supply. Measured results are NF < 1.5dB at the maximum gain and the accurate 1dB gain step is obtained.
著者
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Ha Jong
Department Of Chemical Engineering Korea University
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Lee Seung
Department Of Anesthesiology And Pain Medicine Dong-a University Hospital
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Jung Seung
Department Of Dermatology College Of Medicine Sungkyunkwan University
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Eo Yun
Department of Electronic Engineering, Kwangwoon University
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Lee Seung
Department of Electronics Engineering, Kwangwoon University
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Oh Hyukjun
Department of Electronics Engineering, Kwangwoon University
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Jung Seung
Department of Electronics Engineering, Kwangwoon University
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