US PATENT SUBCLASS 333 / 124
.~.~ With impedance matching

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

1  DF  PLURAL CHANNEL SYSTEMS {4}
100  DF  .~ Having branched circuits {6}
124.~.~ With impedance matching {4}
125  DF  .~.~.~> Including long line element {2}
129  DF  .~.~.~> For providing frequency separation
130  DF  .~.~.~> Using resistors only
131  DF  .~.~.~> Using coupled windings

DEFINITION

Classification: 333/124

With impedance matching:

(under subclass 100) Systems wherein the interconnected or branched transmission lines present impedances at their junction to substantially eliminate the reflected wave energy caused by the junction or wherein 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 means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2+, for branched circuit impedance matching which is automatically controlled.

22, for single channel transmission line terminations involving impedance matching.

32+, for single channel impedance matching coupling networks.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

600+, especially subclasses 612+ for the miscellaneous measurement and testing of impedance mismatch between circuits; and subclasses 140+ for systems and apparatus for the measurement of voltage, current, or power ratios which are indicative of impedance mismatch. 343, Communications: Radio Wave Antennas,

852, for antennas with a plural path coupling network with impedance matching.