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The problem of coupling of a semi-infinite rectangular waveguide with a resonator through the narrow slot in their common end wall is solved. The slot is completely or partially filled with a dissipative dielectric. The changes in the behavior of the reflection and absorption coefficients of the feeding power are studied as a function of the dielectric constant and the thickness of the diaphragm.
Scattering parameters of a slotted diaphragm in a rectangular waveguide are studied. The transverse slot in the diaphragm is partially filled with dielectric. The mathematical model includes accounting several spatial harmonics for description the electrical field in the slot. Resonance wavelength dependence on geometrical structure and electrical parameters of the insert in the slot is revealed....
Partial dielectric filling of the rectangular waveguide is used in the slotted waveguide array with frequency scanning. To achieve the desired slowdown factor of the main mode a waveguide filled with some dielectric plates with different dielectric permittivities is used. The influence of air gaps that arise due to gapping between the plates and the broad wall of the waveguide at the main LM-mode...
The paper analyzes the methods of determining the electromagnetic fields in waveguide-slot structures with dielectric insertions. In a rigorous formulation of the problem cases of single slots and multi-slot systems are analyzed. The elongated dielectric insertions s (in the form of infinitely long layers) and local ones (a “plug” of finite length which completely covers the cross-section of the waveguide)...
Linear systems of slots in a rectangular waveguide with the partial dielectric filling, excited by the slowed down wave are considered. The dielectric layer is parallel to wide walls of a waveguide. It is shown that not resonant system of longitudinal slots in a waveguide with a dielectric layer is more wideband in comparison with that in a hollow waveguide. For not resonant system of transversal...
Waveguide slot arrays (WSA) are widely used in ground and onboard radar-tracking, radiorelay, radionavigating systems. There is a danger of occurrence interference maxima of the higher orders in WSA on a hollow waveguides. To avoid occurrence of these maxima, distances between radiators are reduced using different ways. One of them is the use of waveguides of the Π-shaped form, another one consists...
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