Accession Number : ADA339077

Title :   Design, Testing, and Evaluation of GaAsPN Sequence Generator Circuits Implemented in DCFL and TDFL

Descriptive Note : Master's thesis

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Schimpf, Michael W.

PDF Url : ADA339077

Report Date : SEP 1997

Pagination or Media Count : 96

Abstract : Spaceborne and military communications hardware demands very high speed circuitry even under high radiation exposure. GaAs field effect transistors have the desirable quality that they possess rapid switching rates and are inherently more resistant to total-dose radiation induced failure than their silicon CMOS counterparts. This thesis project involves the design. simulation, submission for fabrication. testing. and evaluation of a 1 -GHz. 7-bit, pseudo-noise sequence generator (PNSG) which has numerous communications applications. particularly in spread-spectrum communications. The basic design of the PNSG is provided first,then topology-specific design considerations are covered for directly-coupled FET logic (DCFL) and two-phase dynamic FET logic (TDFL) implementations. Analysis and comparison of circuit performance characteristics are completed, demonstrating the significant improvement in speed, layout area, and power consumption that dynamic logic offers.

Descriptors :   *GALLIUM ARSENIDES, *COMMUNICATION EQUIPMENT, *INTEGRATED CIRCUITS, *FIELD EFFECT TRANSISTORS, *SEQUENCES, *GENERATORS, *LOGIC, *PSEUDO NOISE SYSTEMS, TEST AND EVALUATION, SIMULATION, DIGITAL SYSTEMS, EXPOSURE(GENERAL), COMPUTERS, DYNAMICS, MILITARY EQUIPMENT, HIGH VELOCITY, THESES, SILICON, THERMAL CONDUCTIVITY, MILITARY APPLICATIONS, SWITCHING, ENERGY CONSUMPTION, COMPLEMENTARY METAL OXIDE SEMICONDUCTORS, TWO PHASE FLOW, CARRIER MOBILITY, RADIATION HARDENING, SPREAD SPECTRUM, SPACEBORNE.

Subject Categories : Electrical and Electronic Equipment
      Computer Hardware
      Logistics, Military Facilities and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE