(under subclass 772) Subject matter wherein the wave guide is formed of an elongated dielectric mass, which may be hollow, the source or receiver of energy being adjacent one end of the mass and the coupling for radiation to or from free space occurring along the sides or at the other end.
(1) Note. By dielectric is meant a material having a dielectric constant materially greater than air.
(2) Note. The mass may be a solid, or confined gas or liquid. This dielectric mass should be the essential conductor of the electromagnetic waves between the source or receiver of the energy and free space. A dielectric mass in a wave guide antenna which merely modifies the characteristic of the energy passing through the guide, the guide itself being the essential conductor, is not classified in this subclass but in subclass 783.
SEE OR SEARCH THIS CLASS, SUBCLASS:
753+, for antennas with spaced radio wave lenses or diffractors which may be of dielectric material.
776+, for plural wave guide antennas which may be of the dielectric type.
783, for wave guide antennas with internal dielectric refracting means. See also (2) Note, above. 907+, particularly subclasses 909+, for antenna components which may be constructed of dielectric materials.
