US PATENT SUBCLASS 343 / 825
.~ Fractional, multiple, or full wave length linear type

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

700 R  DF  ANTENNAS {58}
825.~ Fractional, multiple, or full wave length linear type {4}
826  DF  .~.~> Plural {1}
828  DF  .~.~> Non-uniformity in antenna
829  DF  .~.~> With grounding structure, including counterpoises {1}
831  DF  .~.~> Stub type

DEFINITION

Classification: 343/825

(under subclass 700) Subject matter wherein the antenna is a straight linear conductor such as a rod, wire or stub and wherein the claims recite a particular length, series of length, range of length, or limit of length of this conductor in terms of its operating wave length, or the claims recite a physical length in numerical terms (e.g., number of feet) and in the latter case the context of the disclosure establishes that such terms are an appreciable part of the operating wave length.

(1) Note. This and the indented subclasses are limited to straight linear antennas or to a plurality of such antennas dimensioned as recited in the definition above. Antennas in general (i.e., having a shape other than straight linear) having an appreciable wave length dimension are classified in subclass 843, below.

(2) Note. A lattice type mast of appreciable electrical length which functions as a single elongated conductor, is classified here. Otherwise classification is in subclasses 874+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

723, for single electrically long antennas whose length is adjustable for tuning.

731+, for traveling wave type antennas.

741+, for high frequency type loops. 745+, for antennas with variable reactance for tuning, this reactance being in addition to any inherent distributed reactance of the antennas.

749+, for antennas with lumped reactance for loading.

767+, for slot type antennas.

790+, for sleeve type antennas.

793+, for balanced doublet type antennas.

824, for planar type high frequency arrays.

843, for antennas in general having an appreciable wave length dimension. See also (1) Note, above.

874+, for mast or tower type antennas. See also (2) Note, above.

900+, for rod type antennas of no appreciable wave length.