先进微波成像诊断技术中高通滤波板的优化设计

杨华斌; 仝丽; 朱逸伦

doi:10.7498/aps.64.165202

摘要

介绍了频率选择表面的理论模型和高通滤波板的模拟结果. 通过在高通滤波板中规律性地加入介质, 提高了高通滤波板高通上升沿的上升速度, 并在模拟中证明了其可行性. 论证了使用介质填充的方法可明显优化上升沿速度, 并拓展通带带宽, 拓展了高通滤波板的使用范围, 提高了工作性能. 为先进微波成像的高斯光束空间滤波提供了理想部件.

关键词:

Taking theories and stimulation as the starting points, this paper gives the optimal design for dichroic plate in the advanced technology of imaging diagnostic. Dichroic plate is firstly analyzed theoretically, whose result shows that it is a wavelength-sensitive device, different from the traditional understanding of dichroic plate. In fact, a dichroic plate is a wavelength selective, and its outward manifestation is a frequency selective plate. There are two ways of putting medium into the dichroic plate. It can be seen that with the increase of the medium's semidiameter, the passband bandwidth increases obviously and the rising slope is sharper. When the medium is fully populated, the passband bandwidth reaches its maximum, the freguency increasing upto 12 GHz, and in the meanwhile the rising slope possessing the top speed. The other is to adopt the method of coating. If a hollow dielectric cylinder is filled to become a waveguide, it can also be seen that with the thickening of the wall of the dielectric cylinder, the passband bandwidth also increases obviously and the rising slope is sharper. When the medium is fully filled in the circular waveguide, the result is the same as that of the first method.

Keywords:

作者及机构信息

1.
中国科学技术大学近代物理系, 合肥 230026

基金项目: 国家磁约束核聚变能发展研究专项基金(批准号: 2009GB107001, 2014GB109002)资助的课题.

Authors and contacts

1.
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Funds: Project supported by the Special Funds for the Development of National Magnetic Confinement Nuclear Fusion Energy, China (Grant Nos. 2009GB107001, 2014GB109002).

参考文献

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[2]	Cima G, Bravenec R V, Wootton A J, Rempel T D, Gandy R F, Watts C, Kwon M 1995 Phys. Plasmas 2 720
[3]	Mase A, Kogi Y, Ohashi M, Ohsako S, Nagayama Y, Kawahata K, Aoi S, Sakata E 2003 Rev. Sci. Instrum. 74 1445
[4]	Oyama N, Mase A, Negishi H, Tokuzawa T, Itakura A, Tamano T, Yatsu K, Watabe K, Mizuno K, Nagayama Y, Kawahata K, Matsuura H, Miura A 1997 Rev. Sci. Instrum. 68 500
[5]	Park H, Mazzucato E, Munsat T, Domier C W, Johnson M, Luhmann Jr N C, Wang J, Xia Z, Classen I G J, Donné A J H, van de Pol M J 2004 Rev. Sci. Instrum. 75 3787
[6]	Austin M E, Lohr J 2003 Rev. Sci. Instrum. 74 1457
[7]	Hsia R P, Deng B H, Geck W R, Liang C, Domier C W, Luhmann Jr N C, Brower D L, Cima G 1997 Rev. Sci. Instrum. 68 488
[8]	Gao B X 2013 Ph. D. Dissertation (Hefei: University of Science and Technology of China) (in Chinese) [高炳西 2013 博士学位论文(合肥: 中国科学技术大学)]
[9]	Q J J 2012 M.S. Dissertation (Hefei: University of Science and Technology of China) (in Chinese) [秦津津 2012 硕士学位论文 (合肥: 中国科学技术大学)]
[10]	Deng B H, Hsia R P, Domier C W, Burns S R, Hillyer T R, Luhmann Jr N C, Oyevaar T, Donné A J H RTP team 1999 Rev. Sci. Instrum. 70 998
[11]	Munsat T, Domier C W, Kong X Y, Liang T R, Luhmann Jr N C, Tobias B J, Lee W C, Park H K, Yun G S, Classen I G J, Donné A J H
[12]	Munk B A (translated by Hou X Y) 2009 Frequency Selective Surface Theory and Design (Beijing: Science Press) (in Chinese) [Munk B A 著(侯新宇译) 2009 频率选择表面理论与设计(北京: 科学出版社)]
[13]	Winnewisser C, Lewen F, Helm H
[14]	Ebbesen T W, Lezec H J, Ghaemi H F, Thio T, Wolff P A 1998 Nature 391 667
[15]	Chen C C 1973 Transmission of Microwave Through Perforated Flat Plates of Finite Thickness IEEE pp1-6
[16]	Pickett H M, Farhoomand J, Chiou A E 1984 Appl. Opt. 23 4228
[17]	Wang X Z, Gao J S, Xu N X 2013 Acta Phys. Sin. 62 167307 (in Chinese) [王秀芝, 高劲松, 徐念喜 2013 物理学报 62 167307]

施引文献

[1]	Hartfuss H J, Geist T, Hirsch M 1997 Plasma Phys. Control. Fusion 39 1693
[2]	Cima G, Bravenec R V, Wootton A J, Rempel T D, Gandy R F, Watts C, Kwon M 1995 Phys. Plasmas 2 720
[3]	Mase A, Kogi Y, Ohashi M, Ohsako S, Nagayama Y, Kawahata K, Aoi S, Sakata E 2003 Rev. Sci. Instrum. 74 1445
[4]	Oyama N, Mase A, Negishi H, Tokuzawa T, Itakura A, Tamano T, Yatsu K, Watabe K, Mizuno K, Nagayama Y, Kawahata K, Matsuura H, Miura A 1997 Rev. Sci. Instrum. 68 500
[5]	Park H, Mazzucato E, Munsat T, Domier C W, Johnson M, Luhmann Jr N C, Wang J, Xia Z, Classen I G J, Donné A J H, van de Pol M J 2004 Rev. Sci. Instrum. 75 3787
[6]	Austin M E, Lohr J 2003 Rev. Sci. Instrum. 74 1457
[7]	Hsia R P, Deng B H, Geck W R, Liang C, Domier C W, Luhmann Jr N C, Brower D L, Cima G 1997 Rev. Sci. Instrum. 68 488
[8]	Gao B X 2013 Ph. D. Dissertation (Hefei: University of Science and Technology of China) (in Chinese) [高炳西 2013 博士学位论文(合肥: 中国科学技术大学)]
[9]	Q J J 2012 M.S. Dissertation (Hefei: University of Science and Technology of China) (in Chinese) [秦津津 2012 硕士学位论文 (合肥: 中国科学技术大学)]
[10]	Deng B H, Hsia R P, Domier C W, Burns S R, Hillyer T R, Luhmann Jr N C, Oyevaar T, Donné A J H RTP team 1999 Rev. Sci. Instrum. 70 998
[11]	Munsat T, Domier C W, Kong X Y, Liang T R, Luhmann Jr N C, Tobias B J, Lee W C, Park H K, Yun G S, Classen I G J, Donné A J H
[12]	Munk B A (translated by Hou X Y) 2009 Frequency Selective Surface Theory and Design (Beijing: Science Press) (in Chinese) [Munk B A 著(侯新宇译) 2009 频率选择表面理论与设计(北京: 科学出版社)]
[13]	Winnewisser C, Lewen F, Helm H
[14]	Ebbesen T W, Lezec H J, Ghaemi H F, Thio T, Wolff P A 1998 Nature 391 667
[15]	Chen C C 1973 Transmission of Microwave Through Perforated Flat Plates of Finite Thickness IEEE pp1-6
[16]	Pickett H M, Farhoomand J, Chiou A E 1984 Appl. Opt. 23 4228
[17]	Wang X Z, Gao J S, Xu N X 2013 Acta Phys. Sin. 62 167307 (in Chinese) [王秀芝, 高劲松, 徐念喜 2013 物理学报 62 167307]

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