Gallium Arsenide Ic Applications Handbook by Dennis G. Fisher, I. J. Bahl PDF

By Dennis G. Fisher, I. J. Bahl

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2 The block diagram is shown for an up/downconverter for generic EW applications. Dotted lines denote typical individual MMICs. applications [6] is shown in Fig. 2. The circuit functions shown in broken lines can easily be implemented as MMICs. The millimeter-wave spectrum is another area where MMIC technology will benefit EW systems in terms of low cost and light weight. Chapters 5 and 6 treat EW systems in detail. Smart Weapons Smart weapons for use against stationary and moving armored targets in all weather and terrain conditions must be affordable in large-volume production.

The process for recessed gate MMICs has many similarities. The process includes the fabrication of active devices, resistors, capacitors, inductors, distributed matching networks, air bridges, and via holes for ground connections through the substrate. It should be noted that, difficult as it is, MMIC processing is in fact less complex than silicon processing for devices operating at the low end of the microwave spectrum. Since silicon has inherently lower frequency capability and poorer isolation properties for integration purposes, more exotic processing is required to compete in the frequency region of overlap with GaAs applicability (---1 to 2 GHz).

The Phase 0, 1, and 2 programs started in January 1987, May 1988, and September 1991, respectively. The Phase 3 programs consist of several critical technology programs to supplement the efforts of Phases 1 and 2, running in parallel with both Phases 1 36 lnder Bahl and Dennis Fisher and 2. Altogether, the duration of the MIMIC Program, now nearing completion, is about 8 years and the budget is about $500M. The overall program objective is to [11]: Provide the needed microwave and millimeter-wave products at a price that will allow their use in fielded Department of Defense systems, that meet all required electrical, mechanical, and environmental parameters, and that continue to operate reliably for the time necessary to fulfill their intended application.

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