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http://dx.doi.org/10.5515/KJKIEES.2009.20.12.1316

Modified Cross-Aperture Coupled Microstrip Circular Polarization Array Antenna for WLAN  

Seo, Yong-Seok (Department of Electronic and Computer Engineering, Chonnam National University)
Ahn, Jung-Mo (Department of Electronic and Computer Engineering, Chonnam National University)
Jung, Jin-Woo (Department of Electronic and Computer Engineering, Chonnam National University)
Lee, Hyeon-Jin (Department of Radio Science & Engineering, Dongkang College)
Lim, Yeong-Seog (Department of Electronic and Computer Engineering, Chonnam National University)
Publication Information
Abstract
In this paper, cross-aperture coupled microstrip circular polarization antenna is proposed for 5.8 GHz WLAN(Wireless Local Area Network). A single antenna consists of square patch and slots are located in series feed line with $\lambda_g$/4 phase different which make current direction maximum and minimum repeatedly to generate RHCP(Right Handed Circularly Polarization). We are proposed new structure that removed the section which intersected at a right angle and were composed to four separated slots. The proposed cross slots reduce back lobe of radiation pattern and improve antenna gain. Impedance bandwidth of the manufactured $2\times2$ array antenna is from 5.67 to 5.95 GHz and the maximum radiation gain is 10.59 dBi.
Keywords
Circular Polarization; Array Antenna; WLAN;
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