A virtual point array for parabolic voltage interpolation

Author

Warren, Michael ; Wilson, Denise M.

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

3

fYear

2002

fDate

2002

Firstpage

751

Lastpage

754

Abstract

A method of increasing resolution among a set of DC voltages is presented. The circuit utilizes analog computation to interpolate between voltages with varying degrees of curvature or shift. In comparison to digital computational circuitry, improvements in space and system integration are achieved. The array enables the creation of unlimited (the practical number will be limited by transistor process variations) virtual points between real data points with little to no separation. Experimental fits with true parabolic behavior have correlation coefficients R² higher than 0.97. Application to sensing tasks such as improving spectroscopic resolution of photodetector channel outputs are proposed

Keywords

analogue processing circuits; arrays; image sensors; interpolation; photodetectors; DC voltages set; analog computation; correlation coefficients; parabolic behavior; parabolic voltage interpolation; photodetector channel outputs; resolution improvement; sensing tasks; spectroscopic resolution; virtual point array; Analog computers; Feedback circuits; Interpolation; MOSFETs; Optical filters; Photodetectors; Probes; Sensor arrays; Spectroscopy; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on

Conference_Location

Phoenix-Scottsdale, AZ

Print_ISBN

0-7803-7448-7

Type

conf

DOI

10.1109/ISCAS.2002.1010333

Filename

1010333