Patent ID: 11959991
Assignee: LAKE SHORE CRYOTRONICS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An analog signal source, comprising:
two or more digital-to-analog converters (DAC) combined to generate one or more frequency components;
a first path for generating substantially low frequency signals, the first path comprising a first one of the DACs;
a second path for generating substantially high frequency signals, the second path comprising a second one of the DACs;
a data processor for processing an input signal and providing the processed input signal to the first and second paths;
a combining circuit configured to combine outputs of the first and second paths into the source signal;
a feedback portion configured to sense the source signal; and
a servo loop configured to use the sensed source signal to maintain substantial agreement between the source signal and the input signal by at least one of:
removing DC errors;
removing low frequency errors; and
maintaining an integrity of the high frequency signals.