Automatic impedance matching apparatus

Details Automatic impedance matching apparatus Automatic impedance matching apparatus

1981-08-31

1982-10-26

Gensler, Paul L.

Wave transmission lines and networks

Automatically controlled systems

Impedance matching

307270, H03H 740

Patent

active

043564585

ABSTRACT:
Automatic impedance matching apparatus in which a matching unit is connected between a radio frequency source and a load and which comprises variable capacitors and inductor, the capacitors being varied by stepping motors to match the impedance presented to the source to the impedance of the source. The stepping motors are controlled by a circuit which generates trains of pulses corresponding to the forward wave voltage and the reflected wave voltage on a line between the source and the matching unit and provides a train of pulses corresponding to the ratio of the voltages. The pulse rates of trains of pulses corresponding to the ratio, before and after a capacitor is varied, are compared, and the sign of the difference between the pulse rates is used to select a motor and step it in the direction which will cause the variable capacitor connected thereto to change its reactance in a direction which will increase the ratio between the forward and reflected wave voltages.

REFERENCES:
patent: 3601717 (1971-08-01), Kuecken
patent: 4234960 (1980-11-01), Spilsbury et al.

Affiliated with

Also associated with

Rating

Automatic impedance matching apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic impedance matching apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic impedance matching apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-950625