Title :
Circuit for microbolometer bias-heating cancellation
Author :
Xu, Yong Ping ; Qian, X.B. ; Karunasiri, G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore
fDate :
11/23/2000 12:00:00 AM
Abstract :
A new circuit for microbolometer bias-heating cancellation is described. The circuit is based on the equivalence between the electrical and thermal capacitance. A replica of the bias-heating effect is generated on the electrical capacitance and is used to effectively cancel the bias heating of the microbolometer. The cancellation is tunable
Keywords :
bolometers; capacitance; circuit tuning; focal planes; infrared detectors; microsensors; FPA application; capacitance equivalence; electrical capacitance; microbolometer bias-heating cancellation; micromachined bolometer; thermal capacitance; tunable cancellation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001414
