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http://dx.doi.org/10.5515/JKIEES.2014.14.4.387

Size and Harmonic Reduced Wilkinson Balun Using Parallel Coupled Line with Open Stub  

Lee, Won-Kyun (Department of Electrical and Electronic Engineering, Kangwon National University)
Hwang, Hee-Yong (Department of Electrical and Electronic Engineering and BK21 Plus Graduate Program, Kangwon National University)
Publication Information
Journal of electromagnetic engineering and science / v.14, no.4, 2014 , pp. 387-392 More about this Journal
Abstract
In this paper, a size-reduced Wilkinson balun with wide harmonic-suppressed band is presented. An accurate analysis of the parallel coupled line with an open stub (PCL-OS) is carried out. The PCL-OS structure shows excellent low pass filter and harmonic-suppression characteristics, which is useful for designing a low pass filter unit cell (LUC) with a reduced size. The designed Wilkinson balun at a 2.45 GHz center frequency not only shows an excellent harmonic suppression including the 5th harmonics up to 14 GHz over 15 dB, but it also has an area reduced to 48% of the conventional one.
Keywords
Harmonic Suppression; Low Pass Filter Unit Cell (LUC); Parallel Coupled Line with an Open Stub (PCL-OS); Wilkinson Size Reduction; Balun;
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