Lattice phase equalizers and bridged-T Zobel sections are examples of these devices that have constant image impedance.
One type of these devices, known as the "ring of three," is the subject of an orthogonal tuning algorithm. Another type of these devices is characterized by an elliptic rational function that varies either between zero and one, or between infinity and the discrimination factor. Lattice phase equalizers and bridged-T Zobel sections are examples of these devices that have constant image impedance. The Parks-McClellan algorithm can be used to design these devices when a finite impulse response is desired. Other design paradigms for these devices include the Sallen-Key and ladder topologies. Gain equals "one over the square root of one plus the square of the ripple factor" at the cutoff frequency of their Chebyshev variety. The simplest kind of these devices exhibits 20 decibels per decade of roll-off from passband to stopband and consists of an RL or RC circuit. For 10 points, name these electronic devices that selectively enhance or attenuate the frequency components of a signal.
One type of these devices, known as the "ring of three," is the subject of an orthogonal tuning algorithm.
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