US PATENT SUBCLASS 343 / 840
.~.~ Parabolic-type reflector with active antenna at focus


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

700 R  DF  ANTENNAS {58}
834  DF  .~ Antenna with parasitic reflector {4}
840.~.~ Parabolic-type reflector with active antenna at focus


DEFINITION

Classification: 343/840

(under subclass 834) Subject matter wherein the reflector presents a reflecting surface having a parabolic contour in at least one plane, and the active antenna is positioned at the focus of the parabola.

(1) Note. The reflector may be a sheet, screen, or group of rods, provided the parabolic contour is present. It may include reflecting portions which are not parabolic.

SEE OR SEARCH THIS CLASS, SUBCLASS:

775, 779 and 781+, for wave guide type antennas with a reflector in which the reflector may be of the parabolic type.

815, 817 and 818+, for center-fed balanced doublet type antennas with a reflector in which the reflector may be of the parabolic type.