(under subclass 700) Subject matter wherein the active antenna is combined with a resistance at the end electrically remote from the lead-in terminal to the transmitter or receiver, the resistance being connected to form a closed electric loop across the transmitter or receiver.
(1) Note. In this subclass the essential purpose is usually to render the antenna a periodic. The resistance in this subclass (739) is usually equal to the characteristic impedance of the active antenna. The antennas of this subclass may involve traveling waves, but these waves are usually combined only to be effective as standing waves. The antennas in this subclass are generally of the "broadside" type (i.e., the resulting radiation pattern lies in a generally perpendicular axis to that of the active antenna element) whereas the traveling wave type antennas of subclass 731 are generally of the "end-fire" type, i.e., the radiation pattern established by the active antenna element lies along the same axis as the active antenna element.
(2) Note. The loop may be formed through ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
731+, for traveling wave type antennas terminated at the end remote from the antenna leadin in a resistance. See also (1) Note, above.
845, for antennas with a ground connection spaced from feedline connection.
