Accession Number : ADA260607


Title :   Microwave Absorption Measurements and Interference Effects for a Liquid Fuel between 2.5 and 18 GHz


Descriptive Note : Technical rept.


Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ ARMAMENT ENGINEERING DIRECTORATE


Personal Author(s) : Wiegand, Donald A ; Murray, Frank


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260607.pdf


Report Date : Feb 1993


Pagination or Media Count : 20


Abstract : The incident, reflected and transmitted powers were measured and the reflection and transmission coefficients calculated for a liquid fuel. Two sizes of double-ridge waveguide were used to cover the frequency ranges 2.5 to 7.5 and 7.5 to 18 GHz and corrections were made for waveguide losses. Strong interference effects were observed and the real part of the dielectric constant was obtained primarily from the separation of interference maxima and minima. The loss tangent was obtained by curve fitting to the normalized power loss, and the absorption coefficient was calculated as a function of frequency from the dielectric data.... Microwave, Reflection coefficient, Transmission coefficient, Absorption coefficient, Dielectric constant, Dielectric loss, Loss tangent, Real part of dielectric constant, Imaginary part of dielectric constant, Complex dielectric constant.


Descriptors :   *MICROWAVE SPECTROSCOPY , FREQUENCY , DIELECTRICS , WAVEGUIDES , MICROWAVES , REFLECTION , EXPLOSIVES , FUELS , INTERFERENCE , LIQUID PROPELLANTS , ABSORPTION , LIQUID ROCKET FUELS , ABSORPTION COEFFICIENTS , PYROTECHNICS , CURVE FITTING


Subject Categories : Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE