Feed-Forward Compensated Low-Loss CCD Regeneration Apparatus.
Abstract
The present invention utilizes a feed-forward regeneration circuit to compensate for the modulation of the trailing bias charge by the signal charge in a low-loss charge coupled device. The charge signal is sensed one or two stages before the regeneration stage. The sensed signal is delayed prior to application to the regeneration stage by an amount equal to the signal transit time through the charged coupled device to the regeneration stage. The sensed signal is used to modulate the trailing bias level which is produced by the signal regenerator in a direction that is opposite to the modulation caused by subsequent first-order charge transfer losses. Objects of the present invention are to provide an improved low-loss charge coupled device regeneration stage. To provide an improved low-loss charge coupled device regeneration stage to compensate for the modulation of the trailing bias charge by the signal charge in a charge coupled device. To provide an improved low-loss charge coupled device regeneration stage wherein second order charge transfer losses are improved, and to provide an improved low-loss charge coupled device regeneration stage wherein a feed-forward circuit provides a sensed signal to modulate the trailing bias level in a direction opposite to the modulation caused by subsequent first-order charge transfer losses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 06, 1981
- Accession Number
- ADD008455
Entities
People
- D. J. Sauer
Organizations
- United States Department of the Air Force