| 摘要 |
<p>A method of operating a radio frequency transmitter which includes an RF amplifier, the method comprising the transmitter:
making trial transmissions at each of two or more different values of a particular operating parameter of the transmitter;
measuring the performance of the amplifier during each trial transmission;
deriving control parameters for the amplifier at each operating parameter value on the basis of the measured performance of the amplifier;
storing the derived control parameters; and
transmitting at one of the particular operating parameter values while using the stored control parameters for that operating parameter value to control the amplifier's operation during that transmission; the method being characterised by:
the trial transmissions taking place at two or more different transmission frequencies; and by
the transmitter storing the derived control parameters such that the transmitter has stored at the same time control parameters derived from the two or more trial transmissions and can use any of the stored control parameters for controlling the operation of the amplifier when making a transmission.</p> |
