Physics – Instrumentation and Detectors
Scientific paper
2004-08-31
Physics
Instrumentation and Detectors
18 pages, 10 figures. Extended version including numerical modelings and a theoretical appendix. Original version published on
Scientific paper
10.1063/1.1929607
Open single-mode metallic cavities operating in nonradiative configurations are proposed and demonstrated. Starting from well-known dielectric resonators, possible nonradiative cavities have been established; their behavior on the fundamental TE011 mode has been predicted on the basis of general considerations. As a result, very efficient confinement properties are expected for a wide variety of open structures having rotational invariance. Test cavities realized having in mind practical millimeter wave constraints have been characterized at microwave frequencies. The field distribution of some relevant configurations has been modeled by means of a finite-element numerical method. The obtained results confirm the expected high performances on widely open configurations. A possible excitation of the proposed resonators exploiting their nonradiative character is discussed, and the resulting overall ease of realization enlightened in view of millimeter wave employments.
Annino G.
Cassettari M.
Martinelli Marcello
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