Method of and apparatus for matching a load circuit to a drive c

Wave transmission lines and networks – Automatically controlled systems – Impedance matching

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333 32, H03H 740

Patent

active

041123956

ABSTRACT:
A high Q load circuit is automatically matched to a drive circuit with an L network having a series reactance and a shunt reactance, one of which is on a load circuit side of the network and the other of which is on a drive circuit side of the network. The reactance on the load circuit side is of a type opposite to the reactance of the load, while the drive circuit reactance provides an approximate match between the drive and load circuits. Both reactances are varied until the voltage or current magnitude applied by the drive circuit to the network is at least equal to the voltage or current magnitude of the reactance on the input side. Then the reactances are varied until the voltage or current magnitude of the reactance on the input side is slightly less, by a predetermined amount, than the voltage or current of the reactance on the output side. For each unit change of the reactive value of the reactance on the load side, there is a small change in the reactive value of the reactance on the drive side.

REFERENCES:
patent: 3475703 (1969-10-01), Kennedy et al.
patent: 3601717 (1971-08-01), Kuecken
patent: 3794941 (1974-02-01), Templin

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