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Microstrip unequal Wilkinson power divider with 1:11 division ratio

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  • H. Taher
  • R. Farrell

Abstract

In this paper, a 1:11 unequal microstrip Wilkinson power divider (WPD) is presented. Power division is a necessary function in most of the wireless/wireline communication systems. To design 1:11 WPD using an easy-to-fabricate microstrip technology, microstrip line having a very high characteristic impedance (Zc) value of 315 Ω is needed. Realization of this value is impractical because too thin line is required. Defected ground structure (DGS) provides the hosting microstrip line with high inductance and modest capacitance values simultaneously. As a result, very high impedance could be implemented using practical lines. Novel analytical calculation method is developed to compute Zc of microstrip line loaded with DGS. It is found that circular-patterned DGS could be used to realize the required microstrip line. The designed WPD is fabricated and measured at centre frequency (fc) equals 1 GHz. The measurements of insertion and reflection losses of the fabricated circuit as well as the isolation between the output ports are in a good agreement with the simulated responses of the designed circuit.

Suggested Citation

  • H. Taher & R. Farrell, 2015. "Microstrip unequal Wilkinson power divider with 1:11 division ratio," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 29(14), pages 1887-1898, September.
    • Handle: RePEc:taf:tewaxx:v:29:y:2015:i:14:p:1887-1898
    DOI: 10.1080/09205071.2015.1065771
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