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Lampe, D. R.

Publications and source records attributed to Lampe, D. R..

5 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1981

Four-quadrant CCD analog multiplier

Sequential processing technique improves accuracy when CCD-array signals are multiplied by weighting function to remove offsets. System uses two schemes to cancel undesired output contributions arising from prerequisite biases. First is spontaneous cancellation by multiple "nominally identical" devices; second is sequential cancellation where same devices are used repeatedly to form multiple products. Single device then successively subtracts products, eliminating effects of MOS-array threshold nonuniformities.

Brooks, C. W.↗
NASA NTRS1981

Monolithic four-quadrant multiplier

Integrated configuration for "differential" sequential processor is less susceptible to noise than one using discrete components. Accuracy of version is unaffected by sample-and-hold (S/H) acquisition speed, S/H droop rate, and stray pickup by separate card-mounted parts.

Lampe, D. R.↗
NASA NTRS1981

Monolithic CCD-array readout

Circuit is self-biasing, with differential current-to-voltage conversion. CMOS current-differencing readout consists of dc-balanced pair of virtual ground stages and current-differencing circuit similar to circuit mirror. Triode multiplier cell replaces test sources to form monolithic configuration. Transistors belonging to selected multiplier cell need to be duplicated for each multiplier within correlator chip. Remaining elements form part of readout and may be scaled as single common readout stage.

Farnsworth, D. L.↗
NASA NTRS1978

Investigation of charge coupled device correlation techniques

Analog Charge Transfer Devices (CTD's) offer unique advantages to signal processing systems, which often have large development costs, making it desirable to define those devices which can be developed for general system's use. Such devices are best identified and developed early to give system's designers some interchangeable subsystem blocks, not requiring additional individual development for each new signal processing system. The objective of this work is to describe a discrete analog signal processing device with a reasonably broad system use and to implement its design, fabrication, and testing.

Lampe, D. R.↗