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CMOS correlation receiver for UWB pulse radar

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4 Author(s)
Mincica, M. ; Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy ; Zito, D. ; Pepe, D. ; Giordano, A.

A correlator-based receiver of an UWB radar for cardio-pulmonary monitoring is presented. It consists of low noise amplifier, analog multiplier and integrator. The UWB LNA shows a measured -3 dB band close to 5 GHz, from 3.56 and 8.46 GHz, a transducer gain of 22.7 dB at 5.2 GHz, an input reflection coefficient lower than -10.5 dB in -3 dB band, and a input-referred 1-dB compression point of -19.7 dBm, in excellent agreement with the post-layout simulation results. The multiplier shows a direct conversion gain (GC) equal to 4.3 at 5 GHz, and implements the analog multiplication with a good linearity. The integrator (i.e. OTA) shows a -3 dB band of 40 Hz, a voltage gain of 32 dB and a phase margin of 90 degree with an input linear range of 100 mV. In the linear range the OTA is characterized by a THD of about -38 dB.

Published in:

Research in Microelectronics and Electronics, 2009. PRIME 2009. Ph.D.

Date of Conference:

12-17 July 2009