(under subclass 772) Subject matter wherein the wave guide diverges, or flares, in at least one dimension towards free space.
(1) Note. While in a horn a reflecting function may be performed, the general purpose of the confining walls between the emitter or collector and the mouth of the horn is for guiding the energy to or from the emitter or collector and the mouth, while reflectors as in subclasses 834+, etc.., do not perform this guiding function but merely reradiate the
impinging energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
762, for horn type antennas with means for moving the antenna for scanning, sweeping or orienting.
773+, for biconical type horns.
776+, for plural horns, or sectionalized horns, having two or more wave guide paths. 784, for horns with closures.
834+, and 912+, for antennas with reflectors, and reflectors, per se, respectively. See (1) Note, above.
