An Automated Amplitudes-Only Measurement System for Permittivity Determination using Free-Space Method
An automated PC based free-space system for determining the permittivity of high-loss materials is proposed. The main feature of the system is to measure only the amplitudes of transmission and reflection coefficients using free-space method and determine the permittivity dynamically using a computer. Firstly, the expressions for the reflection and transmission coefficients involving the permittivity of the high-loss material are derived. Then these equations are solved together by using the halving method. In order to measure the amplitudes of reflection and transmission coefficients, a simple and inexpensive microwave measurement system is established. The parallel port is used as an interface between the computer and the designed control circuit. A software program is developed for the treatment of the measured signal amplitudes and determination the permittivity of high-loss materials.
S. Kharkovsky et al., "An Automated Amplitudes-Only Measurement System for Permittivity Determination using Free-Space Method," Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference, 2001. IMTC 2001, Institute of Electrical and Electronics Engineers (IEEE), Jan 2001.
The definitive version is available at http://dx.doi.org/10.1109/IMTC.2001.928870
18th IEEE Instrumentation and Measurement Technology Conference, 2001. IMTC 2001
Electrical and Computer Engineering
Keywords and Phrases
PC Based Free-Space System; Automated Amplitudes-Only Measurement System; Computerised Instrumentation; Control Circuit; Electrical Engineering Computing; High-Loss Materials; Microwave Measurement; Microwave Measurement System; Parallel Port Interface; Permittivity Determination; Permittivity Measurement; Physics Computing; Ray Tracing; Reflection Coefficients; Software Program; Transmission Coefficient
Article - Conference proceedings
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