Prompt aperture efficiencies of impulse radiating antennas with arrays as an application

C. Jerald Buchenauer; J. Scott Tyo; Jon S.H. Schoenberg

doi:10.1109/8.943310

Prompt aperture efficiencies of impulse radiating antennas with arrays as an application

C. Jerald Buchenauer, J. Scott Tyo, Jon S.H. Schoenberg

Optical Sciences, College of

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

A concept of prompt aperture efficiency is introduced for the purpose of comparing and optimizing the performance of impulse radiating antennas (IRAs). The aperture efficiencies of popular lens and reflector IRAs are computed as the ratios of peak radiated power densities on boresight compared with that produced by an ideal IRA with an aperture of equal area and equal total input power. Loss of aperture efficiency occurs through two distinct mechanisms: from power that falls outside the aperture and is lost and from nonuniform power and polarization distributions within the aperture. Both loss mechanisms are addressed, and means for increasing efficiencies are identified. The optimum aperture for a given feed structure is derived. Prompt aperture efficiencies approaching 100% are feasible in TEM-horn arrays and similar structures.

Original language	English (US)
Pages (from-to)	1155-1165
Number of pages	11
Journal	IEEE Transactions on Antennas and Propagation
Volume	49
Issue number	8
DOIs	https://doi.org/10.1109/8.943310
State	Published - Aug 2001

Keywords

Antenna transient analysis
Aperture efficiency

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/8.943310

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title = "Prompt aperture efficiencies of impulse radiating antennas with arrays as an application",

abstract = "A concept of prompt aperture efficiency is introduced for the purpose of comparing and optimizing the performance of impulse radiating antennas (IRAs). The aperture efficiencies of popular lens and reflector IRAs are computed as the ratios of peak radiated power densities on boresight compared with that produced by an ideal IRA with an aperture of equal area and equal total input power. Loss of aperture efficiency occurs through two distinct mechanisms: from power that falls outside the aperture and is lost and from nonuniform power and polarization distributions within the aperture. Both loss mechanisms are addressed, and means for increasing efficiencies are identified. The optimum aperture for a given feed structure is derived. Prompt aperture efficiencies approaching 100% are feasible in TEM-horn arrays and similar structures.",

keywords = "Antenna transient analysis, Aperture efficiency",

author = "Buchenauer, {C. Jerald} and Tyo, {J. Scott} and Schoenberg, {Jon S.H.}",

note = "Funding Information: Manuscript received September 9, 1999; revised December 4, 2000. This work was supported in part by the Air Force Research Laboratory Entrepreneurial Research Program and the Air Force Office of Scientific Research under New World Vistas.",

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T1 - Prompt aperture efficiencies of impulse radiating antennas with arrays as an application

AU - Buchenauer, C. Jerald

AU - Tyo, J. Scott

AU - Schoenberg, Jon S.H.

N1 - Funding Information: Manuscript received September 9, 1999; revised December 4, 2000. This work was supported in part by the Air Force Research Laboratory Entrepreneurial Research Program and the Air Force Office of Scientific Research under New World Vistas.

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N2 - A concept of prompt aperture efficiency is introduced for the purpose of comparing and optimizing the performance of impulse radiating antennas (IRAs). The aperture efficiencies of popular lens and reflector IRAs are computed as the ratios of peak radiated power densities on boresight compared with that produced by an ideal IRA with an aperture of equal area and equal total input power. Loss of aperture efficiency occurs through two distinct mechanisms: from power that falls outside the aperture and is lost and from nonuniform power and polarization distributions within the aperture. Both loss mechanisms are addressed, and means for increasing efficiencies are identified. The optimum aperture for a given feed structure is derived. Prompt aperture efficiencies approaching 100% are feasible in TEM-horn arrays and similar structures.

AB - A concept of prompt aperture efficiency is introduced for the purpose of comparing and optimizing the performance of impulse radiating antennas (IRAs). The aperture efficiencies of popular lens and reflector IRAs are computed as the ratios of peak radiated power densities on boresight compared with that produced by an ideal IRA with an aperture of equal area and equal total input power. Loss of aperture efficiency occurs through two distinct mechanisms: from power that falls outside the aperture and is lost and from nonuniform power and polarization distributions within the aperture. Both loss mechanisms are addressed, and means for increasing efficiencies are identified. The optimum aperture for a given feed structure is derived. Prompt aperture efficiencies approaching 100% are feasible in TEM-horn arrays and similar structures.

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KW - Aperture efficiency

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Prompt aperture efficiencies of impulse radiating antennas with arrays as an application

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