Advanced Capability Infrared Receiver System

The program has demonstrated the following technological elements. A structure to support a 3 x 3 configuration of high performance 10.6 micrometer mixer elements. An array of microlenses that generate receiving antenna beams in registration and crossing each other at a point 3 dB below their peak responses. A mixer-preamplifier combination with measured NEP values of better than 2 x 10 to the -19th power watts/Hz from 10 MHz to 1500 MHz. A microstrip cabling technique to handle the microwave IF signals detected by the infrared mixers. Adequate thermal conductivity in the array structure to extract the heat dissipated by the local oscillator beam and dc bias current. At least 30 dB of electrical isolation at 1500 MHz between adjacent cooled mixer elements.