Title :
High-range switched-capacitor tracking filter
Author :
Bustamante, Luis G. ; Soderstrand, Michael A.
Author_Institution :
Hewlett-Packard Co., Roseville, CA, USA
Abstract :
A high-range switched-capacitor (SC) filter capable of tracking sinusoid signals without the need of a reference is presented. The filter tracks sinusoids by adapting the sampling clock of the switched-capacitors. An important feature of this filter is its ability to track sinusoid signals in cases where the frequency of the signal and the center frequency of the filter are off by several octaves. This is particularly useful in applications were the range of frequencies of the signal is very wide
Keywords :
active filters; circuit stability; switched capacitor filters; tracking filters; center frequency; sampling clock; signal frequency range; sinusoid signals; switched-capacitor tracking filter; Band pass filters; Clocks; Finite impulse response filter; Frequency response; IIR filters; Phase locked loops; Radar tracking; Sampling methods; Spectral analysis; Tracking loops;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780620
