The development of a high speed exponential function generator for linearization of microwave voltage controlled oscillators
Abstract
Voltage Controlled Oscillators (VCO) used in radar signal simulators usually employ piecewise approximation linearizers to compensate for nonlinear frequency versus voltage tuning characteristics. A linearizer was developed which closely approximates an exponential (frequency/voltage) relationship found in many VCO's. This linearizer uses the forward biased (voltage/current) characteristic of a pn junction to provide exponential linearization in a simple, thermally stable, wide band circuit.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 October 1985
 Bibcode:
 1985STIN...8716234M
 Keywords:

 Function Generators;
 Microwave Oscillators;
 Semiconductor Junctions;
 Systems Engineering;
 Voltage Controlled Oscillators;
 Analog Data;
 Electric Potential;
 Exponential Functions;
 Linear Systems;
 Linearization;
 Radar Equipment;
 Thermal Stability;
 Electronics and Electrical Engineering