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We report here the results of some laboratory experiments performed to validate the effectiveness of a technique for the self tuning of integrated continuous-time, high-speed active filters. The tuning algorithm is based on the application of a pseudo-random input sequence of rectangular pulses to the device to be tuned and on the evaluation of a few samples of the input-output cross-correlation function...
A fourth-order low-pass continuous-time filter for a UMTS/WLAN receiver of a reconfigurable terminal is presented. The filter uses the cascade of two Active-Gm-RC biquad cells. A single opamp is used for each biquad and its unity-gain-bandwidth is comparable to the filter cut-off frequency. Thus, the opamp power consumption is strongly reduced w.r.t. other closed-loop filter configurations. The cut-off...
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