Adaptively self-correcting modulator - has transmitter device producing modulated transmitted signal and modulation assessment receiving device coupled to latter for generating digitized samples of modulated transmitted signal

摘要

The modulator includes a first digital signal processing device for applying correction factors to uncorrected samples of in-phase modulation and quadrature modulation waveforms to generate corrected samples and for converting corrected samples into a corrected in-phase modulation and corrected quadrature modulation waveforms The modulator also incorporates a quadrature modulator for impressing the corrected in-phase modulation waveform on a substantially cosinusoidal carrier wave and for impressing the corrected quadrature modulation waveform on a substantially sinusoidal carrier wave. The quadrature modulator produces a modulated output signal, while a transmitter device is provided for up-converting and amplifying the modulated output signal of the quadrature modulator to a predetermined transmission frequency and power level.