Direct-detection MMIC FPAs for MMW imaging

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Abstract
A passive millimeter wave (PMMW) camera capable of generating real time displays of the imaged scene, similar to video cameras, has been developed at TRW over the past two years. The camera operates at 89 GHz, has a 15 degree(s) X 10 degree(s) field-of-view, an aperture of 18' diameter, and displays the acquired image at a frame rate of 17 Hz. A major enabling technology is the focal plane array of direct detection MMIC receivers which enables this camera to be reliable and low cost, in addition to providing it with unique operational features. A state-of-the-art W-band passive millimeter wave FPA consisting of 1040 highly integrated direct detection MMIC pixels capable of generating real time images has been developed. We will discuss the assembly and test of high performing, high frequency GaAs MMIC chips in high volume and at low cost. This work reports on progress achieved to date in the development and manufacturing of this new sensor technology.

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