Adaptive Feed-Forward System.
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A feed-forward system for reducing the distortion products from a device such as an amplifier, wherein a sample of the device input signal is subtractively combined with a sample of the device output signal to produce a sample of the distortion products. The distortion sample is adjusted in amplitude and phase and subtratively combined with the device output to produce a distortion-reduced system output. A synchronous detector correlates a sample of the system output, in which the proportion of distortion has been increased, with another sample of the distortion products to produce control signals for a modulator which adaptively adjusts the amplitude and phase of the distortion sample subtratively combined with the device output. Author
- Numerical Mathematics
- Test Facilities, Equipment and Methods