US PATENT SUBCLASS 343 / 828
.~.~ Non-uniformity in antenna


Current as of: June, 1999
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343 /   HD   COMMUNICATIONS: RADIO WAVE ANTENNAS

700 R  DF  ANTENNAS {58}
825  DF  .~ Fractional, multiple, or full wave length linear type {4}
828.~.~ Non-uniformity in antenna


DEFINITION

Classification: 343/828

(under subclass 825) Subject matter wherein the linear antenna has an abrupt change in its cross-sectional dimension or has a substantially nonradiating branch.

(1) Note. Usually such changes in dimensions or branches have a reactive effect which effects a change in the loading of the antenna.

SEE OR SEARCH THIS CLASS, SUBCLASS:

749+, for antennas having lumped reactance for loading.

790+, for sleeve type antennas.

802, for balanced doublets with distributed reactance added to the doublet arms.

827, for plural section antennas collinearly arranged in which the sections are separated by nonuniformities, which may be in the form of nonradiating or noncollecting reactive loops in the antenna conductor.

843, for antennas in general having an appreciable wave length dimension, which may include branches or abrupt changes in cross-sectional dimension.

899+, for antennas having area increasing means (e.g., changes in antenna dimensions or branches).