focal-plane array

An array of dipoles or horn antennas in the focal plane of a radio telescope. Each element in the array is fed to its own receiving system, so that the array can be used to map a region of sky with an efficiency much greater than that of a single element. These arrays may however be difficult to fabricate, especially at submillimeter wavelengths.

focal-plane array

[¦fō·kəl ‚plān ə′rā] (electronics) A photodetector that has up to a million photosensors on a single semiconductor silicon chip arranged in a rectangular grid matrix that is placed in the focal plane of an optical instrument.

单词	focal-plane array
释义	focal-plane array focal-plane array An array of dipoles or horn antennas in the focal plane of a radio telescope. Each element in the array is fed to its own receiving system, so that the array can be used to map a region of sky with an efficiency much greater than that of a single element. These arrays may however be difficult to fabricate, especially at submillimeter wavelengths. focal-plane array [¦fō·kəl ‚plān ə′rā] (electronics) A photodetector that has up to a million photosensors on a single semiconductor silicon chip arranged in a rectangular grid matrix that is placed in the focal plane of an optical instrument.
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