A REFLECTION CANCELING SLOT SET IN A LINEARLY POLARIZED RADIAL LINE SLOT ANTENNA

被引：47

作者：

TAKADA, J

ANDO, M

GOTO, N

机构：

[1] Department of Electrical and Electronic Engineering, Faculty of Engineering, Tokyo Institute of Technology, Meguro-ku

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1992年 / 40卷 / 04期

关键词：

D O I：

10.1109/8.138845

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 radial line slot antenna (RLSA) is a high gain and high efficiency planar antenna. Circularly polarized RLSA (CP-RLSA) has realized the highest antenna efficiency of 85% for 60 cm-phi DBS antenna. A linearly polarized RLSA (LP-RLSA) is also attractive for applications of various subscriber radio systems. However, the slot arrangement for linear polarization gives rise to serious reflection from slots, which disturbs the normal antenna operation. A new slot design of LP-RLSA is presented where reflection cancelling slots are added to the conventional ones; four slots form one slot set as a unit radiator of linear polarization. The experiments confirm the design: the antenna return-loss is improved from -2 to -10 dB. The antenna efficiency of 48 and 54% are measured for 400 and 600 mm-phi antennas, respectively. This is the first report of the normal operation of LP-RLSA's.

引用

页码：433 / 438

页数：6

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