The Development of a High Speed Exponential Function Generator for Linearization of Microwave Voltage Controlled Oscillators.
J. F. Mickeal, J. J. Renaud, Myles R. McMillan · Defense Technical Information Center (DTIC) · 1985
Voltage Controlled Oscillators 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 p-n junction to provide exponential linearization in a simple, thermally-stable, wide band circuit.