POWER AMPLIFIER EMPLOYING THIN FILM FERROELECTRIC PHASE SHIFT ELEMENT

摘要

It receives an input signal of the first amplifier to produce a first amplified signal by receiving at least a first separation signal, and a second operative signal splitter to generate a separated signal (signal splitter), and a first separation signal, second separation receiving a signal and a second amplifier for generating a second amplified signal. Combining circuit produces a summed output signal of the second amplified signal and the first amplified signal. The amplifier circuit further includes a phase control, the phase control circuit disposed in the signal path of the amplifier in the first amplifier and the second amplifier comprises at least one thin-film ferroelectric devices. The phase shift amount provided by phase control circuit can optionally be changed as a function of the control signals applied.