A UWB-IR Transmitter With Digitally Controlled Pulse Generator

A novel transmitter for ultra-wideband (UWB) impulse radio has been developed. The proposed architecture enables low-power operation, simple design, and accurate pulse-shape generation. The phase and amplitude of the pulse are controlled separately and digitally to generate a desired pulse shape. Th...

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Veröffentlicht in:IEEE journal of solid-state circuits 2007-06, Vol.42 (6), p.1300-1309
Hauptverfasser: Norimatsu, T., Fujiwara, R., Kokubo, M., Miyazaki, M., Maeki, A., Ogata, Y., Kobayashi, S., Koshizuka, N., Sakamura, K.
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Sprache:eng
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Zusammenfassung:A novel transmitter for ultra-wideband (UWB) impulse radio has been developed. The proposed architecture enables low-power operation, simple design, and accurate pulse-shape generation. The phase and amplitude of the pulse are controlled separately and digitally to generate a desired pulse shape. This digital control method also contributes to the low-power transmission and eliminates the need for a filter. The transmitter is fabricated using a 0.18-mum CMOS process. The core chip size is only 0.40 mm 2 . From experimental measurements, it was found that the generated signal satisfied the FCC spectrum mask, and the average power dissipation was only 29.7 mW at A 2.2-V supply voltage. Therefore, the developed UWB transmitter generates accurate pulses with low power consumption and simple design architecture
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2007.897137