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A Compact Hybrid Branch Line Coupler at 2.68 GHz
  • Amel Ramdedovic,
  • Taha Imeci,
  • Sejma Hasak
Amel Ramdedovic
International University of Sarajevo

Corresponding Author:[email protected]

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Taha Imeci
International University of Sarajevo
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Sejma Hasak
International University of Sarajevo
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Abstract

The paper represents the compact hybrid backward wave branch line coupler resonating at 2.68GHz suitable for various applications due to the relatively wide bandwidth (2.14-2.95GHz).The proposed design is simulated utilizing Sonnet Suites Software and the simulated results are in close match with the measured data obtained after the fabrication of the coupler. Furthermore, the S parameters of both simulated and measured results are in the acceptable range. The input match and isolation factor are approximately -30.31dB, whereas coupling factor and insertion loss are around -3.01dB respectively. In addition, the FR-4 dielectric substrate (er = 4.4) with the thickness of 1.55mm is used for the proposed design despite the tangent losses of the FR-4 substrate. The given design is somewhat inexpensive, having a very simple geometry and reliable with a wide bandwidth, it can be used in numerous microwave technological applications.