The cross-polarization scattering system for the magnetic fluctuation measurement in the Experimental Advanced Superconducting Tokamak

2021 ◽  
Vol 92 (4) ◽  
pp. 043511
Author(s):  
J. X. Ji ◽  
A. D. Liu ◽  
C. Zhou ◽  
G. Zhuang ◽  
J. Zhang ◽  
...  
Keyword(s):  
Cross Polarization ◽  
Scattering System ◽  
Magnetic Fluctuation ◽  
The Cross ◽  
Fluctuation Measurement ◽  
Superconducting Tokamak

Study on the cross-polarization method for extracting internal information of objects

Optik ◽  
2019 ◽  
Vol 180 ◽  
pp. 433-441
Author(s):  
Tongshuai Han ◽  
Mingfei Yao ◽  
Guang Han ◽  
Tianpei Wang ◽  
Jingying Jiang ◽  
...  
Keyword(s):  
Cross Polarization ◽  
Polarization Method ◽  
Internal Information ◽  
The Cross

scholarly journals Suppression of Cross-Polarization of the Microstrip Integrated Balun-Fed Printed Dipole Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Huang Jingjian ◽  
Zhang Xiaofa ◽  
Xie Shaoyi ◽  
Wu Weiwei ◽  
Yuan Naichang
Keyword(s):  
Frequency Band ◽  
Dipole Antenna ◽  
Equivalent Model ◽  
Substrate Thickness ◽  
Cross Polarization ◽  
Engineering Applications ◽  
Novel Structure ◽  
The Cross ◽  
Polarization Level

The high cross-polarization of the microstrip integrated balun-fed printed dipole antenna cannot meet the demands of many engineering applications. This kind of antennas has high cross-polarization levels (about −20 dB). And we find that the high cross-polarization radiation is mainly produced by the microstrip integrated balun rather than the dipole itself. The very limited method to lower the cross-polarization level of this kind of antennas is to reduce the substrate thickness. In this paper, to improve the low cross-polarized performance, firstly, an equivalent model is presented to analyze the cross-polarization radiation. Secondly, a novel structure with low cross-polarization is proposed. The microstrip integrated balun is enclosed by a center slotted cavity. The E-field of the microstrip integrated balun is transformed parallel to the dipole arms by the slot, so the radiation of the cross-polarized component is suppressed. Measured results show that this structure can achieve a bandwidth wider than 40% while reducing the cross-polarization level to less than −35 dB within the frequency band.

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