.~ With coupling network or impedance in the leadin {9}
852
.~.~ Plural path with impedance matching
DEFINITION
Classification: 343/852
(under subclass 850) Subject matter including a plurality of interrelated signal paths of which the passive coupling network is at least a part, and wherein the circuit elements of this arrangement are positioned and proportioned to reduce wave reflections arising from the interrelation of the signal paths.
(1) Note. Most of the patents in this subclass disclose a branched coupling network and an antenna joined by the coupling network to a plurality of transmitters or receivers, or a branched coupling network and a plurality of antennas joined to a transmitter or receiver. The branched coupling networks present impedances at the junction to substantially eliminate the reflected wave energy caused by the junction, or one or more impedance elements are provided which are constructed or proportioned to substantially eliminate the reflected wave energy caused by the branched circuit coupling network. See (1) Note under subclass 858 for classification of radiant energy systems involving duplexing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
776+, for wave guide type antennas with branched feed guide or line which may involve impedance matching.
814, and 816, for plural balanced doublet antennas with
coupling which may involve impedance matching.
822, for balanced doublet antennas with impedance matching. 860+, for antennas coupled by a single path to a source or load involving impedance matching.
SEE OR SEARCH CLASS
333, Wave Transmission Lines and Networks,
1+, and particularly subclasses 124+, for plural channel wave transmission systems involving impedance matching; and subclasses 32+ for single channel coupling networks involving impedance matching.
