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A new method for measurement of complex permittivity of liquids using the phase information of standing waves

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3 Author(s)
Hanbao Jiang ; Radio Dept., Sichuan Univ., Chengdu, China ; Mingyi Sun ; Wenjing Chen

A new approach to determine the propagation constant, γ=α+jβ, of waves on a transmission line from phase measurements is proposed in this paper. This new method is very suitable for determining small α. Its distinctive feature is that the attenuation constant α of waves on the transmission line is the slope of a linear function of the displacement of a detector. Thus the attenuation constant α can be determined accurately even if it is very small

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:43 ,  Issue: 3 )