(under subclass 793) Subject matter wherein the conductive masses are each formed as a sheet, or each formed as a closed portion (e.g., closed loop) defining a sheet-like surface.
(1) Note. The sheet may have openings therein, such as exist in a screen or grid. The closed portion may be formed by a conductor or series of conductors defining a closed path. Grid conductors may extend from spaced points on the closed portion, and lie in the plane of the closed portion. These antennas include types designated as fan, wing, sheet, grid or screen. A mere plurality of rods free at one end and joined at the other end is not classified here, but in such subclasses as 808 and 811, below. For classification here the rods must form a closed path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
803+, for folded doublets.
806, for doublets having bent arms.
808, for doublets with a plural-rod arm forming a V. See also (1) Note, above.
811, for fishbone type arrays. 824, for planar arrays of linear antennas.
897, for mesh, woven, braided or multiple strip type antennas.
