2015 ◽  
Vol 58 (2) ◽  
pp. 426-429
Author(s):  
Xingying Huo ◽  
Junhong Wang ◽  
Dawei Li ◽  
Zhan Zhang ◽  
Meie Chen ◽  
...  

2019 ◽  
Vol 8 (4) ◽  
pp. 103-107
Author(s):  
M. Mohammadi

A modal analysis for the directional coupler is presented in this paper. The analysis is based on the mode-matching technique. The theory is verified by Ansoft HFSS software at a directional coupler with standard X-band (WR 90) rectangular waveguide ports. Element values of equivalent circuit model are computed by using the S-parameters obtained from the presented method in this paper. In addition this paper has corrected two formulations used in two previous works which have been published.


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