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用于超宽带天线平衡馈电的低剖面巴仑设计
王涛
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用于超宽带天线平衡馈电的低剖面巴仑设计:提出了一种低剖面超宽带巴仑的设计方法，该巴仑为指数渐变线巴仑的一种改进形式。根据该方法设计的两种巴仑，可分别用于双臂平面螺旋天线和双极化对数周期天线平衡馈电。测试结果表明，在0.4GHz~15GHz频带内，巴仑的驻波系数均小于2，巴仑接天线的驻波系数最大不超过3，且天线连同巴仑的总高度均小于6cm。
关键词： 超宽带低剖面 巴仑 天线
Abstract: The design method of a low-profile ultra-wideband balun, a modification of the traditional exponential tapered balun, is proposed in this paper. Based on this method, two kinds of balun are designed, which can be used to feed the two arm spiral antenna and dual-polarization log-period antenna. The experiment results indicate that the VSWR of the two baluns are less than 2 during the frequency band 0.4GHz~15GHz, and a VSWR no more than 3 can also be obtained during the whole band when connecting the two baluns to the antennas. Moreover, the whole heights of the two antennas when connecting with baluns are less than 6 cm.
Key words: Ultra-wideband Low-profile Balun Antenna
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