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A Calibrated Pulse Generator for Impulse-Radio UWB Applications

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3 Author(s)
Che-Fu Liang ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ; Shih-Tsai Liu ; Shen-Iuan Liu

A 100-Mb/s pulse position modulation generator is presented for impulse-radio ultra-wideband applications. The pulse generator provides a data rate of 100 Mb/s and a pulse width of 1 ns. To achieve an accurate pulse position and pulse width, a mixed-mode calibration circuit is used to calibrate the output buffer of the delay-locked loop. The proposed circuit has been fabricated in a 0.35-mum CMOS process. After the calibration, the measurement results show that both the pulse-width error and the pulse-position error are less than 4%

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:41 ,  Issue: 11 )