scholarly journals An optically reconfigurable dual-band branch-line coupler with artificial transmission lines

2008 ◽  
Author(s):  
D. Draskovic ◽  
D. Budimir
Keyword(s):  
Transmission Lines ◽  
Dual Band ◽  
Branch Line

scholarly journals Miniaturized dual-band coupler using three-branch-line structure and dual transmission lines

2017 ◽  
Vol 14 (18) ◽  
pp. 20170834-20170834
Author(s):  
Lamin Zhan ◽  
Zuwei Li ◽  
Wenguang Li ◽  
Xiang Zhang
Keyword(s):  
Transmission Lines ◽  
Dual Band ◽  
Branch Line ◽  
Line Structure ◽  
Dual Transmission

Compact Dual-Band Branch-Line Coupler With Dual Transmission Lines

2016 ◽  
Vol 26 (5) ◽  
pp. 325-327 ◽  
Author(s):  
Chao Gai ◽  
Yong-Chang Jiao ◽  
Yu-Long Zhao
Keyword(s):  
Transmission Lines ◽  
Dual Band ◽  
Branch Line ◽  
Dual Transmission

A new design method for a dual band branch line hybrid coupler

2015 ◽  
Vol 15 (2) ◽  
pp. 152-158
Author(s):  
D Baatarkhuu ◽  
B Myagmarsuren ◽  
R Baigalmaa
Keyword(s):  
Transmission Lines ◽  
Design Method ◽  
Dual Band ◽  
Branch Line ◽  
Hybrid Coupler

This paper presents the design of a dual band branch line hybrid coupler (BLHC) with different power division ratios at two bands. In the proposed design, transmission lines of the BLHC are transformed to

scholarly journals Dual-Band/Dual-Mode Rat-Race/Branch-Line Coupler Using Split Ring Resonators

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1812
Author(s):  
Mohammad Saeid Ghaffarian ◽  
Gholamreza Moradi ◽  
Somayyeh Khajehpour ◽  
Mohammad Mahdi Honari ◽  
Rashid Mirzavand
Keyword(s):  
Transmission Lines ◽  
Low Cost ◽  
Equivalent Circuit Model ◽  
Ring Resonators ◽  
Dual Band ◽  
Dual Mode ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Branch Line ◽  
Hybrid Coupler

A novel dual-band/dual-mode compact hybrid coupler which acts as a dual-band branch-line coupler at the lower band and as a rat-race coupler at the higher band is presented in this paper. One of the most interesting features of the proposed structure is that outputs of the proposed coupler in each mode of operation are on the same side. This unique design is implemented using artificial transmission lines (ATLs) based on open split ring resonators (OSRR). The low-cost miniaturized coupler could be operated as a dual-band 90° branch-line coupler at 3.3 and 3.85 GHz and 180° rat-race coupler at 5.3 GHz. The proposed coupler could be utilized in the antenna array feeding circuit to form the antenna beam. The structure’s analytical circuit design based on its equivalent circuit model is provided and verified by measurement results.

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