Analyzer for spectroscopy of low-impedance objects

• Autorzy: Hoja J. , Lentka G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents an analyzer making possible impedance measurements in the range of 1 Ω < |Zx| ≤ 100 MΩ. New solutions of input circuitry and phase-sensitive detection technique of measurement signals were used. The input circuit was designed in the form of a 5-terminal measurement probe, which allows decreasing the influence of parasitic resistance, inductance and capacitance on the accuracy of impedance measurement in a wide frequency range from 1 mHz up to 10 MHz. The probe extracts two signals proportional to current through and voltage across the measured impedance. In order to determine orthogonal parts of the extracted measurement signals in a high frequency subrange 1 MHz ÷ 10 MHz, the undersampling technique was used, allowing phase-sensitive detection using 12-bit ADCs with maximum sampling frequency equal to 10 MHz.

Słowa kluczowe

EN

impedance measurement; impedance spectroscopy; measurement probe; DSP

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2009
• Tom: Vol. 16, nr 1
• Strony: 19--31
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Hoja J.

autor

Lentka G.

• Gdansk University of Technology, Faculty of Electronics Telecommunication and Informatics, Narutowicza 11/12, 80-952 Gdańsk, Poland,

Bibliografia

• [1] J.L. Huertas: Test and Design-for-Testability in Mixed-Signal Integrated Circuits, Kluwer Academic Publishers, Boston, 2004.
• [2] K. Arabi, B. Kaminska: “Oscillation-Test Methodology for Low-Cost Testing of Active analog Filters”. IEEE Transactions on Instrumentation and Measurement, vol. 48, no. 4, 1999, pp. 798-806.
• [3] D. Vazquez, G. Huertas, g. Leger, E. Peralias, A. Rueda, J.L. Huertas: “On-Chip Evaluation of Oscillation-Based-Test Output Signals for Switched - Capacitors Circuits”. Analog Integrated Circuits and Signal Processing, vol. 33, 2002, pp 201-211.
• [4] J. Hoja, G. Lentka.: “Virtual instrument using bilinear transformation for parameter identification of high impedance objects”. Meas. Sci. Tech., vol. 14, no 5, 2003, pp. 633-642.
• [5] J. Hoja, G. Lentka: “An analysis of a measurement probe for a high impedance spectroscopy analyzer”. Measurement, vol. 41, no. 1, pp. 65-75, 2008.
• [6] S. Franco: Operation amplifiers and analog integrated circuits. McGraw-Hill Book Company, 1988.
• [7] R.G. Lyons: Understanding Digital Signal Processing, Addison Wesley Longman Inc., 1997.