Experimental Determination of Intrinsic Non-Uniformity in CCD-Multiplexers for FPA

摘要

We present a simple experimental method for determination of intrinsic fixed-pattern non-uniformity (NU) in two-dimensional CCD Multiplexers (MUXs) used for hybrid focal plane arrays, by determining separately the two NUs viz. that are V_T dependent and V_T independent. It is argued that V_T dependent NU can be eliminated by designing novel input circuits whereas V_T independent NU, primarily, dependent on process control may be reduced but cannot be eliminated completely and will limit the FPA performance eventually.