A half-moon antenna

被引：8

作者：

Nakano, H ^{[1
]}

Yamamoto, Y ^{[1
]}

Seto, M ^{[1
]}

Hitosugi, K ^{[1
]}

Yamauchi, J ^{[1
]}

机构：

[1] Hosei Univ, Coll Engn, Tokyo 1848584, Japan

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 12期

关键词：

cylindrical finite-difference time-domain (FDTD) method; small aperture antenna; tilted beam formation; wide radiation;

D O I：

10.1109/TAP.2004.836427

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：

This paper presents a half-moon antenna (HMA), which is composed of two semi-circular top and bottom conducting plates joined by a rectangular conducting plate. The HMA has a wide radiation beam. Radiation in the y - z plane (in the E plane) is hemispherical with a half-power beam width (HPBW) of more than 200degrees. Radiation in the x - y plane (in the H plane) forms a sector beam with an HPBW of more than 100degrees. To reduce the backward radiation and improve the gain, chokes are added to the HMA. An increase in the gain of approximately 1 dB is obtained. In order to obtain a tilted beam, the radius of the bottom plate is reduced. The maximum beam direction of the tilted beam theta(max) is not sensitive to frequency. Within a frequency range of 11 to 14 GHz (24%), theta(max) = 167degrees +/- 2degrees. The gain is found to be G = 9.5 +/- 0.5 dBi within this same frequency range.

引用

页码：3237 / 3244

页数：8

共 15 条

[1]

BALANIS CA, 1982, ANTENNA THEORY, P338

[2] Two-dimensional finite difference time domain analysis of cylindrical transmission lines [J].