A WiMedia/MBOA compliant RF transceiver for ultra-wideband data communication in the 3-5-GHz band is presented. The transceiver includes receiver, transmitter and synthesizer is completely integrated in 0.13-mu m standard CMOS technology. The receiver uses a feedback-based low-noise amplifier (LNA) to obtain an RF gain of 4 to 37 dB and an overall measured noise figure of 3.6 to 4.1 dB over the 3-5-GHz band of interest. The transmitter supports an error vector magnitude (EVM) of -28 dB up to -4 dBm output power and meets the FCC and WiMedia mask specifications. The power consumption from a single supply voltage of 1.5 V is 237 mW for the receiver and 284 mW for the transmitter, both including the synthesizer.

A WiMedia/MBOA compliant RF transceiver for ultra-wideband data communication in the 3-5-GHz band is presented. The transceiver includes receiver, transmitter and synthesizer is completely integrated in 0.13- m standard CMOS technology. The receiver uses a feedback-based low-noise am- plifier (LNA) to obtain an RF gain of 4 to 37 dB and an overall measured noise figure of 3.6 to 4.1 dB over the 3-5-GHz band of interest. The transmitter supports an error vector magnitude (EVM) of 28 dB up to 4 dBm output power and meets the FCC and WiMedia mask specifications. The power consumption from a single supply voltage of 1.5 V is 237 mW for the receiver and 284 mW for the transmitter, both including the synthesizer.

This work describes the influence of light on the treatment of nitrobenzene (NB) in aqueous solutions. Three different experimental devices were used to perform a detailed study: a photoreactor with four low-pressure mercury lamps (λ=253.7nm), a tubular photoreactor with a polychromatic Xe lamp (290<λ<1200nm), and finally a solar reactor (sunlight). TOC analyses were performed in order to monitor and compare the extent of these processes, each of them being performed with one of the three different sources of light. The influence of Fe(II), Fe(III), H2O2, and light on the mineralization of NB in aqueous solutions was also studied. The successful use of sunlight as a source of energy and its effectiveness regarding Fenton processes as well as direct photolysis in the treatment of NB are presented.