US PATENT SUBCLASS 343 / 793
.~ Balanced doublet - centerfed (e.g., dipole)

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

700 R  DF  ANTENNAS {58}
793.~ Balanced doublet - centerfed (e.g., dipole) {17}
794  DF  .~.~> Diverse-type doublets
795  DF  .~.~> Sheet or wing type
796  DF  .~.~> Helically or angularly staggered plural doublets
797  DF  .~.~> Plural crossed (e.g., turnstile) {1}
799  DF  .~.~> Plural circumferentially arranged {1}
801  DF  .~.~> Three or more collinear units form doublet
802  DF  .~.~> Distributed reactance added to arms
803  DF  .~.~> Folded {1}
805  DF  .~.~> Arms angularly adjustable (e.g., rabbit ears)
806  DF  .~.~> Bent arms (e.g., zigzag type)
807  DF  .~.~> Tapered, thick, or enlarged arms
808  DF  .~.~> Plural-rod arm forming V (e.g., conical arrangement)
809  DF  .~.~> Arms non-linearly arranged (e.g., resonant V type)
810  DF  .~.~> Plural {4}
818  DF  .~.~> With parasitic element (e.g., reflector or director) {1}
820  DF  .~.~> With coupling network or impedance in the leadin {2}
823  DF  .~.~> Adjustable length

DEFINITION

Classification: 343/793

(under subclass 700) Subject matter wherein two active conducting masses, which are substantially alike, are physically symmetrically disposed on opposite sides of electrically balanced, antenna lead-in terminals, each of the masses being connected to a respective terminal.

(1) Note. The term "active conducting masses" above is construed to exclude antenna components such as counterpoises.

(2) Note. The radiating masses are deemed substantially alike, if one mass has a nonradiating attachment such as a support to constitute a nonsymmetrical structure. It is only necessary that the radiating portions be substantially alike to meet this requirement in the definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

726, and 727, for plural separate diverse type antennas which include balanced doublets.

730, for plural diverse type antennas using the same active element including balanced doublets.

731+, for traveling wave type antennas which may include balanced portions.

740, for antennas of the balanced type with a terminating resistance at the open end.

741+, for high frequency loop type antennas which may be composed of a plurality of doublet type antennas.

747, for antennas of the balanced doublet type with variable reactance for tuning.

749+, for antennas with lumped reactance for loading which may include a balanced doublet.

792, for doublet type antennas including an active sleeve which surrounds the feed line.

824, for planar arrays of linear antennas.

825+, for fractional, multiple, or full wave length linear type antennas.

865, for balanced antennas in general with a balanced coupling network.