| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control. SOLUTION: An RF driver amplifier system includes a linear transconductor receiving an input voltage and providing a controlled current on the basis of input voltage received, temperature compensation circuitry for varying power from the linear transconductor according to absolute temperature, an exponential current controller receiving power varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry, thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry. Control current passes from the inductive degeneration compensator to the driver amplifier circuitry. COPYRIGHT: (C)2011,JPO&INPIT
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