Efficient use of the frequency spectrum necessitates the use of modulation
formats such as pi/4-DQPSK, which requires linear amplification to minimize
spectral regrowth. A new Linearization technique is presented that allows
a more efficient operation of these linear amplifiers by combining both the
advantage of the transparent nature of feed-forward linearization with the
efficiency of feedback linearization. The method of convolution is used to
analyze the amplifier characteristics and to determine how linearization c
an be achieved, This method is verified experimentally and proves that by c
areful use of the second harmonic component, a new method of linearization
has been realized.