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Filtering by: Subject Electric filters, Digital

Digitally-programmable switched-current filters

Creator:

Yesilyurt, Ayse Gul

Abstract:

Digitally-programmable filters have been an ongoing research topic for a number of years. The first such filters were FIR transversal filters using Charge-Coupled Devices (CCD's) and IIR recursive filters using switched-capacitor (SC) techniques. Although both techniques achieve excellent results, they require non-standard and/or additional IC fabrication steps. Low substrate doping...

Resource Type:

Masters Thesis
A delta-sigma pulse width modulator with pulse dithering

Creator:

Lewison, Richard S.

Abstract:

Pulse Width Modulation (PWM) has been used extensively for motor control, DC-AC converters, DC-DC converters and in audio applications. The conventional method of generating a pulse width modulated signal involves generating an accurate sawtooth or triangle wave using analog circuits. In CMOS, being analog circuit intensive puts extra constraints on...

Resource Type:

Masters Thesis
A DSP controlled resonant active filter for current harmonic mitigation in three-phase power systems

Creator:

Ünsal, Abdurrahman

Abstract:

Power quality has become an important concern to both electric utilities and end users due to the increased use of non-linear loads in modem power systems over the past decade. Nonlinear loads inject harmonics into the power system and thus may lead to poor power quality and lower power factor....

Resource Type:

Dissertation