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Electromagnetics and Antennas Division

Introduction

The Electromagnetics and Antennas Division (EAD) has extensive expertise in the conception, analysis, development, fabrication, and experimental test and evaluation of new and existing antenna systems, radar cross-section (RCS) reduction techniques, and antenna metrology. The Division also conducts research in the area of Electromagnetic Environmental Effects (E3).  The staff has extensive experience in design, analysis, testing, and evaluation in the E3 discipline.  Please see our Overview Briefing.

In particular, EAD's R&D programs have recently involved such areas as: 

  • Phased-array system designs that include: 
    • Architecture tradeoffs 
    • Amplitude, phase and error analysis 
    • Optimization of array geometry 
    • Mechanical packaging 
    • Thermal constraints 
    • Overall technology assessment 
  • Numerical analysis using: 
    • Plane Wave Spectrum (PWS) theory 
    • Method of Moments (MOM) 
    • Spherical Angle Function Analysis (SAF) 
    • Numerical Electromagnetic Code (NEC) 
    • The Air Force's Intrasystem Electromagnetic Analysis Program (IEMCAP) 
    • The Air Force's Aircraft Inter-Antenna Propagation with Graphics (AAPG) 
    • The Air Force's General Electromagnetic Model for the Analysis of Complex Systems (GEMACS) 
    • Geometrical Theory of Diffraction (GTD) 
  • Special-purpose analysis and design of devices such as: 
    • Luneberg, Rotman, and geodesic lenses 
    • Co-axial and waveguide organ-pipe scanners 
    • Multioctave conformal microstrip antennas 
    • Frequency scanning arrays 
    • Requirement-driven shaped reflectors 
  • Measurements on the susceptibilities of cardiac pulse generators (pacemakers and defibrillators) to microwave oven fields, radio frequency fields, power frequency fields, and injected power frequency currents. These measurements have: 
    • Established the characteristics of such devices from 16.6 Hz to 10 GHz. 
    • Formed the basis for the EMC Test Procedures in the Association for the Advancement of Medical Instrumentation (AAMI) Pacemaker Standard, FDA Contract 223-74-5083, dated August 1975. 
  • Single and double reflector antenna designs and subsequent fabrication and testing of these reflector antennas. 
  • Sophisticated antenna feeds including design, development, and test and evaluation. 
  • Mathematical, engineering and scientific analysis of systems, subsystems, and components. 
  • Software tools to aid in the design of phased-array antennas, analysis of conformal arrays, radomes, and reflector antennas. 
  • Antenna measurement facilities including compact ranges, near-field ranges, and phase center ranges. 
  • International Electronic Article Surveillance Manufacturers Association (IEASMA) established the EAS/Medical Device E3 Test Center at Georgia Tech. 
  • Guidelines for hardening electronic systems against HPM, evaluated facility requirements for performing HPM vulnerability assessments, and performed vulnerability assessments of both US and foreign systems to HPM and UWB threat environments.

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Last Updated on 08 February 2000 
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