| 摘要 |
An apparatus and method of compensating for systematic electro-magnetic distortions of generated and transmitted amplitude coded sinusoidal waveforms, where the distortions arise from the varying rate of change of these waveforms. An analog waveform is formed as an interference pattern generated by the combination of at least three substantially sinusoidal waves and represents input data which is divided into N-bit data segments, where N is an integer greater than one. Each of the substantially sinusoidal waves has at least one controllable wave characteristic which is controlled as a function of an N-bit data segment. The analog waveform is delayed through each of at least two delay paths having respective time intervals and respective weightings associated with each of the at least two delay paths are determined. A weighted delayed analog signal is generated at each delay path by multiplying each of the delayed analog signals by the weighting associated with that delay path. The weighted delayed analog signals from each of the delay paths are then combined to generate a compensated analog waveform to correct for electro-magnetic distortion in the analog waveform.
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