J. R. Marciante

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A distributed waveform generator is presented for sub-nanosecond pulse generation in UWB impulse radios. It time-interleaves multiple digital pulse generators, and uses an on-chip transmission line for wideband pulse combining. Compared to other UWB pulse generation and shaping solutions, it is low power and fully reconfigurable. A 10-tap, 10 GS/s prototype(More)
In this paper, we introduce binary-weighted digital control into the gain cell design of a distributed transversal filter (DTF) to demonstrate the benefits of digitally-assisted RF circuits. By effectively integrating a digital-to-analog converter (DAC) into the gain cell, the new design can improve gain cell's linearity and hence DTF's dynamic range. A(More)
— A distributed transversal filter (DTF) is a good candidate for ultrafast pulse shaping in wideband systems like UWB. This paper presents the circuit analysis of DTFs based on transmission line theory. We also show the detailed design procedure of DTFs. A 5-tap prototype DTF is designed and fabricated using microwave PCB substrate and pHEMT discrete(More)
A distributed waveform generator (DWG) with DAC-assisted pulse generators is presented for the ultrafast waveform generation. It time-interleaves multiple pulse generators, and uses an on-chip transmission line for wideband pulse combining. Each unit pulse generator adopts a new current-steering topology which incorporates the edge combiner into the(More)
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