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A Low-power CMOS 2-PPM Demodulator for Energy Detection IR-UWB Receivers

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4 Author(s)
Crepaldi, M. ; Politecnico di Torino, Turin ; Casu, M.R. ; Graziano, M. ; Zamboni, M.

This paper presents an integrated 2-PPM CMOS demodulator for non-coherent energy detection receivers which inherently provides analog-to-digital conversion. The device, called Bi-phase integrator, employs an open loop Gm - C integrator loaded with a switched capacitor network. The circuit has been simulated in a mixed-mode UMC 0.18mum technology and its performance figures are obtained through a mixed-signal simulation environment developed with the aid of ADVanceMS (ADMS, mentor graphics). Bit-error-rate simulations show that the circuit performance is about the same of an ideal energy detection receiver employing infinite quantization resolution. In addition, the simulations show that the circuit provides a complete offset rejection. Thanks to its low power consumption (lmW during demodulation), its application is appealing for portable devices which aim at very low-power consumptions.

Published in:

Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on

Date of Conference:

24-26 Sept. 2007