TUNING-RANGE EXTENSION CIRCUIT FOR SYSTEMS UTILIZING MOSFETS AS TUNABLE RESISTORS

摘要

Tuning range extension circuit system is provided using MOSFETs as tunable resistor. The circuit uses additional MOSFET with each existing MOSFET, with exchange system. Exchange system receives tuning voltage, and supply voltage and reference voltage indicate operational limits filter. Exchange system keep the MOSFET of the system definition or off mode by comparing the tuning voltage to the reference voltage value, and between the grid of additional MOSFET and supplied tuning voltage.