Closed-form design method for broadband parallel-coupled microstrip coupler with tight coupling and practical spacing

2011 ◽  
Vol 53 (12) ◽  
pp. 2790-2794 ◽  
Author(s):  
Amin M. Abbosh
2010 ◽  
Vol 101 ◽  
pp. 97-114 ◽  
Author(s):  
Yongle Wu ◽  
Yuanan Liu ◽  
Shulan Li ◽  
Cuiping Yu ◽  
Xin Liu

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