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...
Oversampled delta-sigma modulation is one of the widely used A/D conversion
techniques for narrow bandwidth signals. In this study several new lowpass and
bandpass delta-sigma modulator architectures as well as novel pseudo-N-path integrators
that can be used in implementing these architectures are proposed.
By using multiplexing techniques the new lowpass...
Farm equipment is becoming an increasingly important
financial asset for many farmers. Tractors probably represent the
single largest component of equipment asset value. As such, changes
in tractor values can have a dramatic effect on a farmer's financial
situation. Changes in equipment value can be attributed to
depreciation and the...