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http://dx.doi.org/10.13067/JKIECS.2017.12.3.445

The Directional Coupler Using the Vertical Coupling Structure  

Yun, Tae-Soon (Dept. Electronics Eng., Honam University)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.12, no.3, 2017 , pp. 445-450 More about this Journal
Abstract
In this paper, the directional coupler with half-power division is designed and fabricated by using the vertical coupling structure based on the CPW transmission-line. Even-mode and odd-mode of the vertical coupling structure can be analyzed by the conventional CPW-line and the CBCPW-line, respectively, with half thickness of the substrate. The directional coupler is designed by using the tefron substrate with the dielectric constant of 2.55 and the thickness of 0.76mm. Manufactured directional coupler has the center frequency of 2.45 GHz and the bandwidth of 66.1%. Also, the return loss and isolation are 19.52dB and 19.47dB, respectively, at the center frequency.
Keywords
Directional Coupler; Vertical Coupling Structure; Coupling; CPW-Line;
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Times Cited By KSCI : 3  (Citation Analysis)
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