A Study on the Design of Directional Coupler with high Directivity 


Vol. 28,  No. 11, pp. 921-928, Nov.  2003


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  Abstract

This paper propose a new design of directional couplers with the high directivity. The directional coupler is used to check and verify the power, frequency and antenna reflection of a signal at transmission station for the mobile communications. The performance index of the directional coupler is to which the coupling is strong to reduce the effect on the transmitted power and the directivity is high to suppress the interference of the reflected signals and reduce the error in the communication. Then, the architectures to gain the high directivity and the studies to get the strong coupling have been proposed. However, the conventional architectures for the high directivity and strong coupling have the directivity by about 20 dB and the difficulty to achieve the higher directivity than 40dB suitable for IMT-2000 [1].
This paper proposes an architecture of the directional coupler which is based on the grounding composed of the strip lines and the comparison results with the conventional directional couplers. The comparison results show that the proposed directional coupler has the directivity more than 40dB and is adequate for the 2.05GHz IMT-2000.

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  Cite this article

[IEEE Style]

I. Ji and J. Chong, "A Study on the Design of Directional Coupler with high Directivity," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 11, pp. 921-928, 2003. DOI: .

[ACM Style]

Il-Gu Ji and Jong-Wha Chong. 2003. A Study on the Design of Directional Coupler with high Directivity. The Journal of Korean Institute of Communications and Information Sciences, 28, 11, (2003), 921-928. DOI: .

[KICS Style]

Il-Gu Ji and Jong-Wha Chong, "A Study on the Design of Directional Coupler with high Directivity," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 11, pp. 921-928, 11. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880