Publikationsdatum:
2019-06-28
Beschreibung:
The modal attenuation constants in a cylindrical waveguide coated with a lossy dielectric material are studied as functions of frequency, dielectric constant, and thickness of the dielectric layer. A dielectric material best suited for a large attenuation is suggested. Using Kirchhoff's approximation, the field attenuation in a coated waveguide which is illuminated by a normally incident plane wave is also studied. For a circular guide which has a diameter of two wavelengths and is coated with a thin lossy dielectric layer (omega sub r = 9.1 - j2.3, thickness = 3% of the radius), a 3 dB attenuation is achieved within 16 diameters.
Schlagwort(e):
COMMUNICATIONS AND RADAR
Materialart:
NASA-CR-173820
,
NAS 1.26:173820
,
EL-TR-84-13
,
UILU-ENG-84-2552
Format:
application/pdf
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