US PATENT SUBCLASS 333 / 17.3
.~ Impedance matching

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

17.1  DF  AUTOMATICALLY CONTROLLED SYSTEMS {3}
17.3.~ Impedance matching

DEFINITION

Classification: 333/17.3

Impedance Matching:

(under subclass 17.1) Subject matter in which the condition sensed is utilized to control circuitry that performs an impedance matching function in the system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

32+, for impedance matching circuits of the nonautomatically controlled type.

SEE OR SEARCH CLASS

455, Telecommunications,

120+, for frequency tuning a transmitter to an antenna.