Design of A Ku-band Corrugated Horn With Good-Symmetrical Pattern

Si-min Li, Zhuo Liu, W. Cao, Xinhua Yu, Yiying Wang, Chen-Wu Yu
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引用次数: 1

Abstract

A good-symmetrical Ku-band corrugated horn feed with small diameter for directional radiation is proposed in this paper which is composed of a corrugated radiator and a mode converter. To concentrate the impedance transformation, 15 radial grooves are curved inside the horn. And the mode converter is slotted in the radial direction where the corresponding groove depth is changed from $\lambda/2$ to $\lambda/4$ to realize the conversion from TE11to HE11. Then, the converted HE11mode is transmitted to the corrugated horn and a good directional pattern is obtain. To verify the design, a horn prototype is fabricated and measured. The measured results show that the VSWR is 1.2:1 covering the range from 12.25 to 15.5 GHz and the good symmetry of the patterns are also gotten, while the simulations indicate the designed horn has low side lobes.
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一种具有良好对称图案的ku波段波纹角的设计
本文提出了一种具有良好对称性的、直径较小的ku波段波纹喇叭定向辐射馈源,该馈源由波纹散热器和模式变换器组成。为了集中阻抗变换,喇叭内部弯曲了15个径向凹槽。将模态转换器沿径向开槽,将相应的槽深从$\lambda/2$改为$\lambda/4$,实现te11到HE11的转换。然后,将转换后的he11模式传输到波纹喇叭中,获得良好的定向方向图。为了验证设计,制作了一个喇叭原型并进行了测量。测量结果表明,在12.25 ~ 15.5 GHz范围内,该喇叭的驻波比为1.2:1,具有良好的图案对称性,仿真结果表明所设计的喇叭具有较低的侧瓣。
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