Driver for voltage controlled attenuator

Details Driver for voltage controlled attenuator Driver for voltage controlled attenuator

1982-09-13

1985-10-29

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307261, 307310, 307358, 307503, G06G 712

Patent

active

045502650

ABSTRACT:
For use with a voltage controlled attenuator operating at microwave frequencies, the driver generates an output signal which is a non-linear function of an input voltage signal. The input stage includes a thermistor to alter the input signal to compensate for temperature variations. The temperature compensated signal is delinearized by parallelly connected diodes which separately selectively ground the output of the input stage at different potential levels defined by resistor networks. A differential amplifier generates a signal which is a function of the difference between the compensated input signal and the delinearized signal. The output stage generates an output voltage which is a function of the difference signal. The output voltage regulates a current source. The output of the current source is applied to the attenuating PIN diodes.

REFERENCES:
patent: 3333180 (1967-07-01), Neu
patent: 3813561 (1974-05-01), Williams et al.
patent: 4339727 (1982-07-01), Kage et al.

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