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Proceedings Paper

Programmable filter for photoacoustic experiments
Author(s): Tomasz Starecki; Marcin Grajda
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Paper Abstract

The paper describes a design, test circuit and preliminary test results of a programmable filter dedicated to photoacoustic experiments. The filter was implemented as a state variable filter with independent digital control of top and bottom corner frequencies as well as quality factor. In order to perform frequency response measurements a dedicated miniature automatic measurement system was designed. The system was based on digital direct synthesis of the input sine wave and true-RMS detection of the output signal.

Paper Details

Date Published: 12 October 2006
PDF: 5 pages
Proc. SPIE 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006, 63471G (12 October 2006); doi: 10.1117/12.714770
Show Author Affiliations
Tomasz Starecki, Warsaw Univ. of Technology (Poland)
Marcin Grajda, Warsaw Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 6347:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006
Ryszard S. Romaniuk, Editor(s)

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