• 论文 •

### 矩形斜口面天线辐射性能

1. 北京航空航天大学 电子工程系
• 收稿日期:1999-08-23 发布日期:2010-11-19
• 作者简介:吕善伟(1937- ),男,辽宁大连人,教授,100083,北京.

### Radiation Performances of a Incline Rectangular Aperture Antenna

Lü Shan-wei, ZHANG Jiang-lin

1. Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering
• Received:1999-08-23 Published:2010-11-19

Abstract: The incline rectangular aperture antenna is one whose opening is tapered only on both narrow sides of a rectangular waveguide, placed on a perfectly infinite conducting plane, excited by the dominant H10 mode in the rectangular waveguide. The electric and magnetic field components over the aperture and radiated field formula are simply analyzed. The main beam pointing lies off broadside, namely the major lobe pointing deviates from the perpendicular of the aperture and the axis of the excited waveguide. The principal plane patterns have been calculated and the input voltage standing wave ratio (VSWR) versus measured frequencies is given. It is found that the VSWR is related to the incline angle of the aperture, and can be improved using different incline angles.