(under subclass 53) Subject matter wherein there is included as a signal coupling means a circuit network of lumped parameters or impedances, which is designed to simulate the impedance characteristics of a distributed parameter wave transmission means.
(1) Note. Distributed parameter transmission means as used in the definition above include long lines and long line elements such as telephone and telegraph lines, lecher lines, parallel transmission lines, in general, concentric lines, wave guides, cavity resonators, tuned transmission lines, etc.., which possess distributed capacitance and inductance. For the definition of such means and "lumped parameter or impedance" means as used above, see the class definition for Class 333, Wave Transmission Lines and Networks. Subject matter involving inherent capacity or inductance, as for example, between electrodes, or of a lead inside a tube when made use of as a lumped reactance circuit element, is classified in the appropriate subclass involving the circuit. Neutralization by feedback is classified in subclasses 76+ below.
SEE OR SEARCH CLASS
333, Wave Transmission Lines and Networks,
23, for passive type artificial line, per se; and subclasses 138+, for delay lines.
