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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
Reduction of Multiple Reflection
Influence in Microwave Free-Space Measurements [PDF] |
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AUTHORS |
Y. Zhang
and 2000 35 2 119-124 |
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Abstract The influence of the
multiple reflections is one of the main error sources in the microwave
free-space measurements. In this study, the influence is analyzed for the
conventional free space method, and a new method which uses absorbing
material inserted between the antenna and the sample to reduce the influence
of the multiple reflections is proposed. The effectiveness of this approach
is verified by measuring the attenuation of timbers. It is showed that the
maximum error caused by the multiple reflections in the improved free-space
set-up is 0.4 dB, while that in the conventional free-space method is 1.5 dB.
Key Words: Multiple reflection influence, Reduction, Absorbing material, Microwave free-space measurement, Attenuation measurement |
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