A New Dual Band Branch Line Hybrid Coupler with Arbitrary Power Division Ratio

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

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Dual-band branch-line couplers with three parallel lines for arbitrary power-split ratios

Journal of Electromagnetic Waves and Applications ◽

10.1080/09205071.2013.805167 ◽

2013 ◽

Vol 27 (10) ◽

pp. 1220-1229 ◽

Cited By ~ 2

Author(s):

J. Ha ◽

S. Lee ◽

J.-H. Park ◽

Y. Lee

Keyword(s):

Dual Band ◽

Branch Line ◽

Arbitrary Power ◽

Parallel Lines ◽

Power Split

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Dual-band branch-line hybrid with distinct power division ratio over the two bands

International Journal of RF and Microwave Computer-Aided Engineering ◽

10.1002/mmce.20655 ◽

2012 ◽

Vol 23 (1) ◽

pp. 90-98 ◽

Cited By ~ 5

Author(s):

Karun Rawat ◽

Meenakshi Rawat ◽

Mohammad S. Hashmi ◽

Fadhel M. Ghannouchi

Keyword(s):

Dual Band ◽

Branch Line ◽

Division Ratio

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

Electronics ◽

10.3390/electronics10151812 ◽

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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