Open ended-coaxial Cable Measurements of Saturated Sandy Soils
نویسندگان
چکیده
منابع مشابه
Open ended-coaxial Cable Measurements of Saturated Sandy Soils
The application of electromagnetic methods in the radar and micro-wave frequency band allows the fluid content of soils to be estimated; the heuristic or physically-based models permit to relate the observed electrical permittivity of the soils with the porosity and fluid saturation. The role of the effect of the free water and bound water in the overall electromagnetic behaviour of soils is di...
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The open-ended, coaxial-line probe technique can be used to obtain estimates of the pennittivities of some solid dielectrics over broad ranges of frequency by measurements on powdered or pulverized samples, but certain limitations must be recognized. Such a probe was used with a network analyzer to estimate the permittivities of coal and limestone from reflection coefficients measured on pulver...
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(1) and c is the speed of light in vacuum. Estimate the time-average power P (i.e., the radiation) that escapes from the end of the cable using vector (or scalar) Huygens-Kirchhoff diffraction theory for the case that the cable is excited with a TEM wave with λ b. Compare the cases of a coaxial cable by itself, and one with its outer conductor attached to a ground plane such that the radiation ...
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ژورنال
عنوان ژورنال: American Journal of Environmental Sciences
سال: 2007
ISSN: 1553-345X
DOI: 10.3844/ajessp.2007.175.182