Accession Number:

ADA252393

Title:

Dielectric Ribbon Waveguide-An Optimum Configuration for Ultralow-Loss Millimeter/Submillimeter Dielectric Waveguide

Descriptive Note:

Technical rept.

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA ELECTRONICS RESEARCH LAB

Personal Author(s):

Report Date:

1991-04-14

Pagination or Media Count:

44.0

Abstract:

Dielectric ribbon waveguide supporting the eHE11 dominant mode can be made to yield an attenuation constant for this mode that is less than 20 dBkm in the millimetersubmillimeter wavelength range. The waveguide is made with a high-dielectric-constant, low-loss material such as alumina or sapphire. The waveguide takes the form of thin dielectric ribbon surrounded by lossless dry air. Detailed theoretical analysis of the attenuation and field extent characteristics for the low-loss dominant eHE11 mode along a ribbon dielectric waveguide was performed using the exact finite-element technique as well as two approximate techniques. Analytical predictions were then verified by measurements on ribbon guides made with rexolite, using the highly sensitive cavity resonator method. Excellent agreement was found.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE