Moving average is an exceptionally good smoothing filter (the action in the time domain), but an exceptionally bad low-pass filter (the action in the frequency domain).

This paper presents a filter scheme composed by passive and series active power filters specially designed to compensate fundamental reactive power (with passive filters) and current harmonics (combination of passive and ...

A filter can be a device, or even a material, that is used either to suppress or minimize signals of certain frequencies.

This paper proposes frequency-domain correlation filtering to solve object recognition of three-dimensional (3D) targets. We perform a linear correlation in the frequency domain between an input frame of the video sequence ...

IIR filters are implemented using the recursion. Are analog and digital filters that use a mathematical strategy for achieving a faster roll off by allowing ripple in the frequency response (they use Chebyshev polynomials).

A new methodology for the synthesis of tunable patch filters is presented. The methodology helps the designer to perform a theoretical analysis of the filter through a coupling matrix that includes the effect of the tuning ...

A new frequency synthesizer using a hybrid analog/digital loop filter is presented. The digital loop filter employs a technique that allow resolution improvements without disturb the settling speed and using a low complexity ...

A new frequency synthesizer using a hybrid analog/digital loop filter is presented. The digital loop filter employs a technique that allow resolution improvements without disturb the settling speed and using a low complexity ...

Two novel adaptive notch filters are presented. The updating algorithms are based on the Steiglitz-McBride error criterion minimization and the basic realizations of the notch filters are all-pass based lattice filters. ...