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A fast-settling GaAs-enhanced frequency synthesizer
Authors:Naber  JF Singh  HP Tanis  WJ Koshar  AJ Segalla  GL
Affiliation:ITT Gallium Arsenide Technol. Center, Roanoke, VA ;
Abstract:An indirect, phase-locked-loop (PLL), GaAs-enhanced frequency synthesizer with 700 ns loop settling time has been developed. The two-chip GaAs insertion reduced the size of an existing synthesizer from 90 in3 to only 30 in3. The 6.0 in×5.5 in.×0.9 in module contains a 400 gate GaAs programmable divider and a sample and hold (S/H) which improved the settling time by 77% and reduced the size by 67% over the current state-of-the-art synthesizer. Furthermore, the divider reduced power dissipation by 9.7 W and the S/H reduced power dissipation by 1.3 W
Keywords:
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