Boost function for filters

Amplifiers – With plural amplifier channels – Amplifying different frequencies in different channels

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

330306, 307520, 328127, H03F 368

Patent

active

053572084

ABSTRACT:
An integrated circuit is disclosed that includes a biquadratic filter in which the poles and zeroes are independently adjustable. The transfer function of the filter has a pair of zeroes in the numerator and a pair of complex conjugate poles in the denominator. The integrated circuit includes a first circuit for constructing the complex conjugate poles of the filter transfer function. The first circuit has an input port for receiving an input signal and an output port at which an output current representative of a filtered output signal is presented. The integrated circuit includes a second circuit for constructing, independently of the poles, the zeroes of the filter transfer function. The second circuit has an input port coupled to the input port of the first circuit for receiving the input signal. The second circuit includes a differentiator for differentiating the input signal to produce a differentiated input signal. The second circuit provides an output current that is proportional to the differentiated input signal. The output current from the second circuit is summed with the output current of the first circuit to produce the filtered output signal. Disk drive controllers that utilize integrated circuits including this technique have the advantage of using a single filter over the entire frequency range with the flexibility of independently varying poles and zeroes of the filter. The biquadratic filter is particularly useful in systems that have a variable rate of encoding digital information so as to record data in a constant bit density.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Boost function for filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Boost function for filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boost function for filters will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2375279

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.