Increase in the prompt radiated field from an IRA by aperture design techniques

J. Scott Tyo, Michael J. Baretela, C. Jerald Buchenauer, Leland H. Bowen, Everett G. Farr

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


Recent results are reported that improve the prompt radiated response from reflector and lens impulse radiating antennas (IRAs) by improved control of the aperture fields of the TEM mode distribution. Both reflector and lens IRAs benefit from trimming the aperture to eliminate portions where the vertical component of the electric field is oriented in the wrong direction. Reflector IRAs can further benefit from reorientation of the TEM feed arm angles as well as the relative size of the feed arms to the maximum aperture radius. Significant improvements over 45° feed arms can be realized by making 200Ω reflector IRAs with feed arms at 30° from the vertical with the circle of symmetry slightly inside the aperture outer boundary and small amounts of aperture trimming.

Original languageEnglish
Title of host publicationIntense Microwave Pulses VIII
Number of pages11
Publication statusPublished - 15 Aug 2001
Externally publishedYes
EventIntense Microwave Pulses VIII -
Duration: 16 Apr 200120 Apr 2001

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceIntense Microwave Pulses VIII
Internet address


  • Aperture antenna design
  • Impulse radiating antennas
  • UWB antennas

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