Experimental Verification of Degenerate Band Edge Dispersion in Metallic Waveguides

被引:0
|
作者
Othman, Mohamed A. K. [1 ]
Capolino, Filippo [1 ]
Pan, Xuyuan [2 ]
Atmatzakis, Georgios [2 ]
Christodoulou, Christos [2 ]
机构
[1] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA
[2] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA
来源
2017 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING | 2017年
关键词
Electromagnetic Bandgap; Cavity Resonators; Degenerate Band Edge;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The degenerate band edge (DBE) is a fourth order degeneracy occurring in a periodic structure at which four Bloch modes, both propagation and evanescent, coalesce. We experimentally demonstrate here for the first time the DBE dispersion in loaded metallic waveguides at microwave frequencies. The proposed waveguide in which DBE is observed here is designed by periodically-loading a circular waveguide with misaligned elliptical metallic rings. We validate the existence of the DBE in the presented waveguide using measurements and we report good agreement with full-wave simulations of the waveguide near the DBE; taking into account metallic losses. We correlate our finding to theoretical and simulation results utilizing various techniques including dispersion synthesis. The proposed waveguide, and other metallic slow-wave structures supporting the DBE can be used for a variety of applications including pulse compression and high power microwave generation.
引用
收藏
页码:447 / 448
页数:2
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