Gain Enhancement of a Circularly-Polarized Patch Antenna with a Double-Layered Superstrate for Wireless LAN 


Vol. 40,  No. 12, pp. 2427-2433, Dec.  2015


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  Abstract

A high-gain circularly-polarized patch antenna with a double-layered superstrate is proposed operating at a wireless LAN frequency. A superstrate has an array of metallic periodic unit cells and is located above the patch antenna with an air-gap. The designed antenna has a high gain of over 9.59dBi, which is the gain enhancement of 6.48dB compared to the patch antenna without superstrate. And it has a low axial ratio of under 3dB, so that it maintains the circular polarization of the patch antenna. The optimum air-gap height at the superstrate of 4x4 arrays is 25mm, which is equivalent to about 0.2λ at the frequency of 2.45GHz. We confirmed that the double-layered stacking of a superstrate increases the effective aperture size and hence it leads to enhance a gain of the patch antenna.

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  Cite this article

[IEEE Style]

S. Lee, "Gain Enhancement of a Circularly-Polarized Patch Antenna with a Double-Layered Superstrate for Wireless LAN," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 12, pp. 2427-2433, 2015. DOI: .

[ACM Style]

Sangrok Lee. 2015. Gain Enhancement of a Circularly-Polarized Patch Antenna with a Double-Layered Superstrate for Wireless LAN. The Journal of Korean Institute of Communications and Information Sciences, 40, 12, (2015), 2427-2433. DOI: .

[KICS Style]

Sangrok Lee, "Gain Enhancement of a Circularly-Polarized Patch Antenna with a Double-Layered Superstrate for Wireless LAN," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 12, pp. 2427-2433, 12. 2015.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880