US PATENT SUBCLASS 343 / 833
.~ Antenna with parasitic director


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

700 R  DF  ANTENNAS {58}
833.~ Antenna with parasitic director


DEFINITION

Classification: 343/833

(under subclass 700) Subject matter wherein the active antenna is combined with conductive (usually metallic) structure, (e.g., a rod) which reradiates into free space impinging radio waves coming from or going to the active antenna, the velocity of the reradiated wave having a component in the direction of velocity of the impinging wave, thereby to modify the radiation pattern of the active antenna, there being no significant potential relationship between the active antenna and the conductive structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

781+, for wave guide type antennas with external directors.

815, 817 and 818, for dipole antennas with parasitic elements which may be directors; and subclass 819 for dipole antennas having both reflectors and directors.

834+, for antennas with reflectors.

912+, for reflectors and directors, per se.