Title :
The positive side of filters: a summary
Author :
Benvenuti, Luca ; Farina, Lorenzo ; Anderson, Brian D O
Author_Institution :
Dept. of Comput. & Syst. Sci., La Sapienza Univ., Rome, Italy
Abstract :
The linear filters characterized by a state-variable realization given by matrices with nonnegative entries (called positive filters) are heavily restricted in their achievable performance. Nevertheless, such filters are the only choice when dealing with the charged coupled device MOS technology of charge routing networks (CRNs), because nonnegativity is a consequence of the underlying physical mechanism. In order to exploit the advantages offered by this technology, the authors try to overcome the above-mentioned limitation by realizing an arbitrary transfer function as a difference of two positive filters
Keywords :
active filters; charge-coupled device circuits; transfer functions; CCD MOS technology; arbitrary transfer function; charge routing networks; charged coupled device MOS technology; linear filters; matrices; positive filters; state-variable realization; Chebyshev approximation; Circuits and systems; Clocks; Cutoff frequency; Low pass filters; Nonlinear filters; Passband; Routing; Solid state circuits; Transfer functions;
Journal_Title :
Circuits and Systems Magazine, IEEE
DOI :
10.1109/7384.963465
