| 摘要 |
PURPOSE: To obtain a distortion compensation method and a distortion compensation amplifier by which appropriate distortion compensation can be performed even in the sudden change of operating environment. CONSTITUTION: The optimum vector quantity of vector adjusters 2, 7 can be found by the optimization processing of a CPU 19, and simultaneously, they are stored in a RAM 22 by relating to temperature and the level of an input signal at that time. When fluctuation occurs in the temperature or the level of the input signal, the optimum vector quantity is read out when the optimum vector quantity corresponding to fluctuated temperature or level of the input signal is stored in the RAM 22, and the vector quantity of the vector adjusters 2. 7 are controlled so as to be the optimum vector quantity read out of the RAM 22 by the CPU 19. In this way, the distortion compensation can be performed with superior responsiveness and appropriately for the level fluctuation of the temperature and the input signal. |
