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Dong, J. (author), Van Driel, W. (author), Zhnag, G. (author)This paper describes a new design concept of automatically diagnosing and compensating LED degradations in distributed solid state lighting (SSL) systems. A failed LED may significantly reduce the overall illumination level, and destroy the uniform illumination distribution achieved by a nominal system. To our knowledge, an automatic scheme to...journal article 2011
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Zhao, Y. (author), Dong, Y. (author), Gerrits, J.F.M. (author), Van Veenendaal, G. (author), Ling, J.R. (author), Farserotu, J.R. (author)A 9 mW FM-UWB receiver front-end for low data rate (<50 kbps), short range (<10 m) applications operating in the ultra-wideband (UWB) band centered at 7.45 GHz is described in this paper. A single-ended-to-differential preamplifier with 30 dB voltage gain, a 1 GHz bandwidth FM demodulator, and a combined (preamp/demodulator) receiver front-end...journal article 2009