POLAR TRANSMITTER APPLY TO BPSK MODULATION METHOD USING DISTRIBUTED ACTIVE TRANSFORMER

摘要

A polar transmitter having a DAT(Distributed Active Transformer) and using a BPSK(Binary Phase Shift Key) modulation method is provided to apply to a multi-mode and a multi-band due to fast data processing speed and a broad bandwidth and to facilitate designing by simplifying a circuit. A polar transmitter having a DAT(150) and using a BPSK modulation method is composed of a data dividing unit dividing the input data into amplitude components and phase components through a predetermined process; a frequency synthesizer(120) generating an I value of a pass band having phase components of an I signal and a Q value of a pass band having phase components of a Q signal; an I signal polar modulation circuit(130) generating an I carrier wave for the I signal by using the amplitude components output from the data dividing unit and the I value output from the frequency synthesizer; a Q signal polar modulation circuit(140) generating a Q carrier wave for the Q signal by using the amplitude components output from the data dividing unit and the Q value from the frequency synthesizer; and a carrier wave generating unit generating a carrier wave by combining I and Q carrier waves.