ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Frequency-selective microwave polarization rotator using substrate-integrated waveguide cavities |
Zuo Yu (左钰)a, Shen Zhong-Xiang (沈忠祥)b, Feng Yi-Jun (冯一军)a |
a School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;
b School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore |
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Abstract A frequency selective polarization rotator that can rotate the polarization angle of an incident electromagnetic wave at the microwave frequency by 45° is presented. The polarization rotator is based on a two-dimensional periodic array of substrate integrated waveguide cavities, realizing the polarization rotation by coupling the input signal to the output wave through three metallic slots. Two layers of frequency selective surfaces are cascaded by substrate and form the polarization rotator. A vertical slot on the top layer is used to select the horizontal polarization from the incident wave, the vertical and the horizontal slots on the bottom layer are, respectively, used to obtain horizontally and vertically polarized outgoing waves. The two orthogonal outgoing waves are combined to result in the 45° polarized wave. Both full wave simulation and experimental measurement are carried out, together validating the proposed method.
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Received: 28 June 2013
Revised: 08 August 2013
Accepted manuscript online:
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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42.25.Ja
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(Polarization)
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84.40.Az
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(Waveguides, transmission lines, striplines)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60990322, 60990320, 60801001, and 61101011), the Key Grant Project of Ministry of Education of China (Grant No. 313029), the Ph. D. Program Foundation of Ministry of Education of China (Grant Nos. 20100091110036 and 20120091110032), and the Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves, China. |
Corresponding Authors:
Feng Yi-Jun
E-mail: yjfeng@nju.edu.cn
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Cite this article:
Zuo Yu (左钰), Shen Zhong-Xiang (沈忠祥), Feng Yi-Jun (冯一军) Frequency-selective microwave polarization rotator using substrate-integrated waveguide cavities 2014 Chin. Phys. B 23 034101
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