Analysis of 320X240 uncooled microbolometer focal plane array ...

11corresponding to T 1 . With radiation falling upon the bolometer, the temperature changesby AT to a new value T.Figure 2.2 A simple bolometer circuit.For the analysis, it is assumed that all the radiation incident upon the detector isabsorbed uniformly throughout the volume, the material is uniform throughout thevolume, and non-uniform Joulean heating is ignored. In absence of radiation with biasonrrent in the rirrnit the heat transfer Pnimtinn is oiven hvand the surrounding at T 0. The term on the right hand side of the equation is the Jouleanheating of the bolometer. With the presence of radiation P, the bolometer changes itstemperature by AT to T. The heat transfer equation becomes