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首页> 外文期刊>Microwave and optical technology letters >DUAL-BAND BALUNS FOR REDUCING THE INFLUENCE OF FEED CABLE IN ANTENNA MEASUREMENT
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DUAL-BAND BALUNS FOR REDUCING THE INFLUENCE OF FEED CABLE IN ANTENNA MEASUREMENT

机译:减少馈线在天线测量中的影响的双频带平衡器

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摘要

In order to obtain accurate radiation characteristics of an antenna, it is required to reduce unbalanced current on the surface of the feeding cable. A miniaturized balun of stacked coaxial cavities is presented to show high input impedances at two separate bands. An equivalent circuit with transmission lines, and inductive and capacitive elements is employed to characterize the circuit behavior of the dual-band balun. In particular, the method to design a dual-band balun, with arbitrary ratio of the upper resonant frequency to the lower resonant frequency, is presented to facilitate the design process. Both numerical values and experimental results are presented to illustrate the validity of the design method.
机译:为了获得天线的准确辐射特性,需要减少馈线表面上的不平衡电流。提出了堆叠同轴腔的小型巴伦,以在两个单独的频带上显示出高输入阻抗。具有传输线,电感性和电容性元件的等效电路用于表征双频巴伦的电路性能。尤其是,提出了一种以较高谐振频率与较低谐振频率的任意比率设计双频带巴伦的方法,以简化设计过程。同时给出了数值和实验结果,以说明设计方法的有效性。

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