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Surface-field cavity based on a two-dimensional cylindrical lattice
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View: Figures


Image of FIG. 1.
FIG. 1.

Photograph of the experimental setup and cylindrical 2D periodic structure (inset) which forms the cavity having diameter 80 mm, corrugation depth 1 mm, 28 azimuthal variations and longitudinal period of 8 mm.

Image of FIG. 2.
FIG. 2.

(a) The contour plot of the and field components of the cavity eigenmode. The coupling between the surface and volume field can be seen on the first plot while the second plot shows the surface field decaying toward the cavity center (the plot observed using 3D code MAGIC). (b) Spectra of the cavity eigenmodes (with radial indices ) excited by a broadband [29–44 GHz] pulse formed by the TEM wave.

Image of FIG. 3.
FIG. 3.

(a) Frequency dependence of the signal transmission through the smooth waveguide (thin line) and the surface field cavity (thick line) measured by the receiving horn antenna at 1.2 m distance from the output [see Fig. 1]. (b) The results of the radiation mode pattern measurements in the far field zone from the cavity (thick line) and cylindrical waveguide (thin line).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Surface-field cavity based on a two-dimensional cylindrical lattice