Thin-Film Hybrid Microcircuitry. Part I. Boxcar Circuit for a Current HDL Fuse System.
HARRY DIAMOND LABS WASHINGTON D C
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FILMS, FUZESORDNANCETHIN FILMS, COMPUTER AIDED DESIGN, HYBRID CIRCUITS, MICROMINIATURIZATIONA thin-film hybrid version of the boxcar circuit for a current Harry Diamond Laboratories fuze system was developed. A single circuit was laid out and a computer program written to generate 4 identical circuit patterns using a computer-tape driven plotter. The resistor-conductor patterns were produced by standard photolithographic techniques, and discrete chip devices diodes, capacitors, and transistors were attached with conducting epoxy cement. Connections to the chip devices and to lead-out pins were made by thermocompression wire bonding to complete the circuit fabrication. Preliminary electrical tests indicated acceptable insertion losses of approximately 0.6 dB and high-frequency roll-off points in the expected frequency range. Author
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