US PATENT SUBCLASS 333 / 208
.~.~ Waveguide

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

24 R  DF  COUPLING NETWORKS {15}
202  DF  .~ Wave filters including long line elements {4}
208.~.~ Waveguide {4}
209  DF  .~.~.~> Tunable
210  DF  .~.~.~> Including evanescent guide sections
211  DF  .~.~.~> Including frequency selective absorbing means
212  DF  .~.~.~> Including directly coupled resonant sections

DEFINITION

Classification: 333/208

Waveguide:

(under subclass 202) Subject matter wherein the filter structure includes a hollow dielectric tube, a hollow metal tube, or a solid dielectric designed to propagate electrical waves having an electric or magnetic field component extending in the direction of propagation and wherein the outer surfaces of the tube or solid dielectric serve as boundaries for the electromagnetic fields.

(1) Note. Included in this subclass would be filters employing dielectric rods or dielectric clad conductors wherein the propagation of energy is substantially confined to the immediate neighborhood of the rod or dielectric clad conductor.