喇叭天线
地平面
光学
导线
辐射模式
物理
圆柱
几何学
天线(收音机)
数学
电气工程
缝隙天线
工程类
作者
Yifan Wang,Teng Li,Dou Wang
标识
DOI:10.1109/lawp.2023.3271849
摘要
An ultrawideband, 3-D printed endfire transverse electromagnetic (TEM) horn antenna mounted on a cylinder conductor is proposed. The system consists of four TEM horn antennas and a cylinder conductor. The proposed TEM horn antenna is composed of four parts: a metal exponential curve, a trapezoidal metal top cover, a cylindrical ground, and a metal ridge. To enhance impedance bandwidth and radiation characteristics, a metal ridge is introduced on the cylinder ground plane. To verify the proposed antenna, a prototype is 3-D printed with surface metallization. The proposed antenna has a broad bandwidth from 1 to 16 GHz (16:1) with a voltage standing wave rate <2 and a profile of 0.134 ${\lambda }_L$ ( ${\lambda }_L$ being the free-space wavelength at the lowest frequency). A good radiation pattern is obtained over the impedance bandwidth, and the measured gain ranges from 3.5 to 11.5 dBi.
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