A monofilar spiral antenna excited through a helical wire

被引：15

作者：

Nakano, H ^{[1
]}

Okabe, Y ^{[1
]}

Mimaki, H ^{[1
]}

Yamauchi, J ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2003年 / 51卷 / 03期

关键词：

helical wire; low cross-polarization; spiral antenna; tilted beam formation;

D O I：

10.1109/TAP.2003.809865

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：

The radiation characteristics of a monofilar spiral antenna excited through a helical wire are investigated using the method of moments. The spiral has a circumference of more than two wavelengths (2.3lambda(theta), where lambda(6) is the wavelength at a test frequency of 6 GHz) to obtain a tilted beam. An input impedance of approximately 50 Ohm is realized by appropriately selecting the diameter and pitch angle of the helical wire. The antenna shows a gain of approximately 8 dB relative to an isotropic source in the maximum beam direction (18degrees from the direction normal to the antenna plane) and a VSWR frequency bandwidth of approximately 12%.

引用

页码：661 / 664

页数：4