Paper title: NOVEL DUAL COMPOSITE RIGHT LEFT HANDED METAMATERIAL BRANCH-LINE COUPLER FOR QUAD BAND MICROWAVE APPLICATIONS
Author(s): IULIA ANDREEA MOCANU,
Abstract: A novel quad band branch-line coupler with 3 dB coupling loss is proposed and implemented with real components. It uses dual
composite right left handed (D-CRLH) transmission lines designed to work for four frequencies simultaneously, f1 = 1.7 GHz,
f2 = 5.2 GHz, f3 = 2.43 GHz, f4 = 3.64 GHz. An algorithm for an efficient designing of the metamaterial lines is presented and
validated both analytical and by simulation. The implementation with real components of the branch-line coupler proves to have
good performances, exhibiting a directivity up to 37 dB and a phase imbalance less than 0.65o. The other transmission
parameters are also very good for all four microwave frequencies and a coupling loss of around 4 dB is achieved in all cases.
Keywords: Quad band branch-line coupler, Dual composite right left handed (D-CRLH) transmission lines, Metamaterials,
Microwaves Year: 2016 | Tome: 61 | Issue: 2 | Pp.: 194-200
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