The dual antenna diversity transmitter and system with improved power amplifier efficiency

The present invention is an invention relating to the dual antenna (dual antenna) diversity (diversity) and transmitter system. The invention relates to a dual antenna diversity system having a transmitter and in particular an improved power amplifier (power amplifier) ​​efficiency. A power amplifier for amplifying the input signal into a signal having a very high power is to consume the most power in the system. The present invention is a dual antenna diversity transmitter and in accordance with the transmission output power which is required to add a switch to the system by reducing the direct current input power consumed by the power amplifier to a minimum, to allow for efficient power amplifier operation. Applying the present invention has the advantage that it can more easily and efficiently operated in a power amplifier while maintaining linearity of the signal to be amplified as compared with the conventional high-efficiency power amplifier system in the dual antenna diversity transmitter and the system. High efficiency (high efficiency), the power amplifier (power amplifier), a dual antenna (dual antenna), diversity (diversity)