Broadband Optical Receiver for 10.6 Microns.
Final technical rept. Feb-Nov 69,
EATON CORP DEER PARK NY AIL DIV
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A packaged infrared 10.6-micron heterodyne receiver was developed for radar application. It combines sensitivity approaching the quantum-noise limit with gigahertz IF bandwidth. Signal processing electronics was also provided for search and acquisition of the doppler-shifted radar return signal, and other functions. The receiver has as its principal components a cryogenically cooled GeCu infrared mixer element, and associated broadband IF preamplifier, IF and signal processing electronics, and peripheral monitor and control electronics. The receiver is suitably packaged for operational use in a 10.6-micron pulsed radar system. Design considerations and measured receiver characteristics are presented. Receiver noise properties for IF frequencies up to 1200 MHz and mixer noise characteristics were measured. The measured noise equivalent power was 8.1 x 10 to the minus 20th power wHz at 1.4 kHz, less than 1.5 x 10 to the minus 19th power wHz from 10 to 800 MHz, and less than 2.25 x 10 to the minus 19th power wHz up to 1200 MHz. Author
- Infrared Detection and Detectors