The problems of analysis and design of the broadband groove guide directional couplers are investigated by the microwave network method. Using the transverse equiva- lent network for partially dielectric-filled asymmetrical double-groove guide, a related program for solving the problems is developed. The calculations show that the relative bandwidths of the couplers given in this paper are all larger than 24%, which is five times as many as the bandwidth of the conventionally designed groove guide couplers; whereas the lengths of the present couplers are much shorter than those designed in the references.
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徐善驾 殷路军.宽频带槽波导定向耦合器的分析与设计[J].红外与毫米波学报,1992,11(6):430~434]. Xu Shanjia, Yin Lujun. ANALYSIS AND DESIGN OF BROADBAND GROOVE GUIDE DIRECTIONAL COUPLERS[J]. J. Infrared Millim. Waves,1992,11(6):430~434.]