[1]章文勋,袁锦云,杨先华.双环天线的阻抗理论和频带优化[J].东南大学学报(自然科学版),1987,17(4):15-22.[doi:10.3969/j.issn.1001-0505.1987.04.003]
 Zhang Wenxun Yuan Jinyun Yang Xianhua(Department of Radio Engineering).On the Impedance Calculation and the Optimization for Twin-Loop Antenna[J].Journal of Southeast University (Natural Science Edition),1987,17(4):15-22.[doi:10.3969/j.issn.1001-0505.1987.04.003]
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双环天线的阻抗理论和频带优化()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
17
期数:
1987年第4期
页码:
15-22
栏目:
本刊信息
出版日期:
1987-07-20

文章信息/Info

Title:
On the Impedance Calculation and the Optimization for Twin-Loop Antenna
作者:
章文勋袁锦云杨先华
南京工学院无线电工程系; 南京工学院无线电工程系
Author(s):
Zhang Wenxun Yuan Jinyun Yang Xianhua(Department of Radio Engineering)
关键词:
双环天线 宽带天线 电视广播天线 矩量法 天线最优化
Keywords:
twin-loop antenna broadband antenna TV broadcast antenna moment method optimization for antenna
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1987.04.003
摘要:
双环天线以其宽频带性能和馈电简单而获得广泛应用,国内学者曾对它的原型结构作过多种改型。然而迄今尚缺少对双环天线进行阻抗计算的准确理论。本文用矩量法分析和计算了双环天线中圆环的阻抗特性,讨论了双环天线的设计公式和输入阻抗频带的两步优化程序。设计实例指出:对天线结构与Balun结构分步优化可以进一步展宽频带,驻波比低于1.1的相对带宽可达36.4%。
Abstract:
Twin-loop antenna (TLA) has been widely used because of its broadband property and simply feeding, and some modified structures have been developed from its prototype by Chinese engineers. But the exact design theory for TLA according to the impedance calculation has not yet been developed. In this paper, the impedance of loops in a TLA is analysed and computed using the moment method, the impedance data are given; the design formulae and a twostep optimization program for broading the bandwidth of input impedance of TLA are detailed. An example of optimized design shows that the bandwidth can be increased by optimizing both the structures of antenna and balun, a result of 36.4% bandwidth for V. S. W. R. ≤1.1 is obtained.
更新日期/Last Update: 2013-05-01