ABSTRACT
Based on the derived coupling coefficients of the circular waveguide and coaxial waveguide, a novel dual-band serpentine coaxial mode converter is proposed in this paper. This dual-band converter consists of two parts: an inner inserted circular waveguide TM01-TE11 converter operating at Ka-band, and an outer coaxial waveguide TEM-TE11 converter working at Ku-band. The inner and outer converters have the same curvature distribution along the propagation direction with a structure length of 800 mm. Simulated results exhibit that the maximum conversion efficiencies of the inner and outer converters reach 98.7% and 98.9% at 35 and 15 GHz, respectively. The bandwidths of the inner and outer converter are 1.9 and 2.5 GHz when the conversion efficiency is over 90%. Furthermore, the dual-band mode converter has a symmetry and reciprocity structure with coaxial-parallel input/output port. The good agreement between theoretical calculations and simulation demonstrates the feasibility of this design.
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No potential conflict of interest was reported by the authors.
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Keqiang Wang
Keqiang Wang is currently pursuing the PhD degree in the University of Electronic Science and Technology of China, Chengdu, China.
Hao Li
Hao Li received the PhD degree in physical electronics from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2009. He is currently with the UESCT.
Tianming Li
Tianming Li received the PhD degree in physical electronics from the University of Electronic Science and Technology of China, Chengdu, China, in 2005. From 2011 to 2012, he was a Senior Visiting Fellow with the College of William and Mary, Williamsburg, VA, USA. He has been with the UESCT.
Yong Luo
Yong Luo received the PhD degree in physical electronics from the University of Electronic Science and Technology of China (UESTC), Chengdu, China. He is currently with the UESTC.
Haiyang Wang
Haiyang Wang received the PhD degree in physical electronics from the University of Electronic Science and Technology of China (UESTC), Chengdu, China, in 2009. He is currently with the UESTC.
Jianing Zhao
Jianing Zhao is currently pursuing the PhD degree in the University of Electronic Science and Technology of China, Chengdu, China.
Chaoxiong He
Chaoxiong is currently pursuing the PhD degree in the University of Electronic Science and Technology of China, Chengdu, China.