Preparation and Dielectric Properties of Polystyrene Foam Material Used for Luneburg Lens Antenna
ZHANG Xiong1, ZHOU Yongjiang2, HUANG Lihua2
1 Military Representative Office of Air Force in Changsha Area, Changsha 410011; 2 Key Laboratory of Advanced Ceramic Fibers and Composites, National University of Defense Technology, Changsha 410073
Abstract: The research on the composite material with high dielectric property is significant for the need of a new type of light dielectric composite material in modern radar and communication system. Polystyrene (PS) foam with different densities was synthesized by suspension polymerization, and the relationship between the dielectric constant and the density of PS foam was studied. The dielectric property of barium titanate (BaTiO3) powder were analyzed. The light barium titanate/polystyrene composite foam was prepared by the dry-mixing method. The dielectric constant of foam or BaTiO3/PS composites increases with the density and shows weak frequency-dependence and low dielectrical loss. Barium titanate powder has high dielectric constant and low dielectrical loss. The dielectric constant of BaTiO3/PS composites increases with the increase of BaTiO3 content. When the dielectric constant of materials are the same, BaTiO3/PS composites is less dense and lighter than that of polystyrene foam, which indicates that the addition of BaTiO3 can realize the weight reduction of dielectric materials.
1 Luneberg R K, Allen L K. Mathematical theory of optics [J]. Am J Phys,1966,34(1):80. 2 Braun E. Radiation characteristics of the spherical luneberg lens [J]. IRE Trans Antennas Propagation,1956,4(2):132. 3 Peeler G, Coleman H. Microwave stepped-index luneberg lenses [J]. IRE Trans Antennas Propagation,1958,6(2):202. 4 Tai C T. The electromagnetic theory of the spherical luneberg lens [J]. Appl Sci Res Sect B,1959,7(1):113. 5 田江晓,郭杰,莫崇江.龙伯透镜制造工艺研究现状及发展趋势分析[J].飞航导弹,2013(5):84. 6 冯孝中,李亚东.高分子材料[M].哈尔滨:哈尔滨工业大学出版社,2006:63. 7 Carpenter Michael,et al. Lens of gradient dielectric constant and methods of production: US,6433936B1[P].2002. 8 Liang Min, Ng Wei-Ren, Chang Kihun, et al.An X-band Luneburg lens antenna fabricated by rapid prototyping technology [C]//2011 IEEE MTT-S International Microwave Symposium.Baltimore,2011:1. 9 Zhu Jianhua, Liang Fei, Wang Xiaohong, et al. Discussion on mu-tual restrain relation between the dielectric properties of microwave dielectric ceramic materials [J]. Electron Components Mater,2005,24(3):32(in Chinese). 朱建华,梁飞,汪小红,等. 微波介质陶瓷材料介电性能间的制约关系[J].电子元件与材料,2005,24(3):32. 10 Chen Q, Hong R Y, Feng W G. Preparation and characterization of composites from Ba0.5Sr0.5TiO3 and polystyrene[J].J Alloys Compd,2014,609:274.
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2017, Vol. 31 
