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

被引：10

作者：

Buchenauer, CJ ^{[1
]}

Tyo, JS ^{[1
]}

Schoenberg, JSH ^{[1
]}

机构：

[1] USAF, Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2001年 / 49卷 / 08期

关键词：

antenna transient analysis; aperture efficiency;

D O I：

10.1109/8.943310

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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-born arrays and similar structures.

引用

页码：1155 / 1165

页数：11