الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The work described in this thesis is theoretical studies for design of slow-wave structures and for their applications in microwave heating systems. Investigation is made for structures applicable for treating low-loss dielectric filamentary and tubular materials. The analysis is concerned with disc-loaded circular waveguide and disc-loaded coaxial line, slow-wave structures.
A discussion of the dielectric absorption phenomena at the microwave heating frequencies and of dependence of the rate of energy dissipation on the dielectric proper¬ties of the treated material are given in Chapter 1
\lave propagation in the above mentioned structures are analyzed ~n detail. Propagation of transverse magnetics ~~nm’ modes is only considered~ This is due to the fact that the absorbed power by the processed material from
the transmitted power flow is, in general, due to the longitudinal electric field component. Analytical expres¬sions for the characteristic equation are derivedQ Behaviour of variation of the characteristic equation arguments with the applicator geometry is illustrated 0 Very thin tubes and filaments of small cross-sectional area are assumed. The perturbation principles are applied to handle the analysis of power absorption and to deter¬mine the attenuation coefficient due to dielectric polarization. Comparison is made between the attenuation
coefficients of the studied configurations and the atten-
r uation coefficient of the conventional travelling-wave
circular waveguide a.pplicator when they are longitudinally loaded with the same dielectric filamentary material. Numerical examples illustrating the design procedure of the dimensional parameters of both disc-loaded circular waveguide and disc-loaded coaxial line are given. These parameters are calculated for the standard heating f1:’e¬quency of 2~45 GHz. However, they can be calculated
for an:;; other frequency.”.
It is found that disc-loaded circular waveguide
and disc-loaded coaxial line are applicable applicators for treating low-loss filamentary and tubular dielectric materials by microwave ener~o High power absorption and consequently high heating efficiency is achieved through
the use of these configurations.