| 摘要 |
Disclosed is an RF transmitter circuit ( 10 ), as well as a method for operating the circuit. The RF transmitter circuit includes a VGA ( 20 ), that includes circuitry for generating a feedback signal, and a temperature compensation block ( 18 ) having an input coupled to a gain control signal and an output coupled to an input of the VGA for providing to the VGA a compensated gain control signal. The temperature compensation block further includes a bias input that receives the VGA feedback signal. The VGA feedback signal operates to modify the gain control signal to reduce an amount of variability in a VGA gain slope over a range of VGA output power.
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