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With release of the ldquoFirst Report and Orderrdquo Feb.14, 2002, by the US Federal Communication Commission (FCC), the power spectral density of UWB for indoor/outdoor communication devices is defined. From that, the signal used in UWB system has power spectrum with ultra-wideband, which implies very narrow pulse in time domain. The shape of monocycle pulse plays important role because it affects...
This paper describes the design of ultra wideband (UWB) pulse generator circuit. The design is based on source couple logic (SCL) for it's low power and high immune to noise. The design is simulated and result of the circuit is dual pulses with width around 200 p second, which used to encode the bipolar data using 2-input multiplexer. Mainly, in this paper, we concern about pulse generator circuit...
This work describe and present the analysis for the source-coupled logic (SCL) inverter. The SCL inverter circuit model and its operation is defined. The analysis for the SCL is carried from the point of view of input/output voltage characteristics, and the effect of noise margin. Finally, the inverter gate delay model is described, and the effect of biasing current on the delay is shown. All simulation...
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