OPTIMALIZED PERFORMANCE CODING UNIT FOR HIGH FREQUENCY POWER AMPLIFIER, HIGH FREQUENCY POWER AMPLIFIER WITH CODING UNIT, TRANSMITTER UNIT EQUIPPED WITH SUCH AMPLIFIER, AND CODING METHOD FOR OPERATING THE AMPLIFIER

摘要

A high frequency power amplifier comprises a coding unit (100), a switching amplifier (200) connected to the output of said unit (100), and a filter unit (300) connected to the output of said amplifier (200) . The unit (100) includes a polar modulation unit (110), a pulse width modulator unit (120), and a multiplier (130). The unit (110) is adapted to represent, in the form of an envelope signal and a binary phase signal, an input signal of said unit (100). The unit (120) is adapted to convert said envelope signal into a modulated pulse width envelope signal and output to a first input of the multiplier (130). The multiplier (130) is adapted to perform a logical AND combination of said binary phase signal and said modulated pulse width envelope signal, and to output it to an output of said unit (100).