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Subject: search.filters.subject.Slot loop antenna

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    Double rectangular slot loop antenna for dual frequency
    (2008-12-01)
    Jearapraditkul, P.
    ;
    Archevapanich, T.
    ;
    Purahong, B.
    ;
    Anantrasirichai, N.
    ;
    Sangaroon, O.
    This paper presents the technique for reducing size of double rectangular slot loop antenna fed by microstrip line for dual frequency. The two difference configurations of double rectangular slot loop antenna are proposed for comparison on bandwidth and size of antenna. These antennas are designed for dual frequency support WLAN system coverage IEEE 802.11b/g (2.4-2.4835 GHz), IEEE 802.11j (4.90-5.091), IEEE 802.11a (5.15-5.35 GHz), and IEEE 802.16d (5.7-5.9 GHz). The PCB-FR4 substrate with dielectric constant (ε<inf>r</inf>) 4.5 of thickness 1.6 mm is chose for low cost. The simulation results of these slot antennas are analyzed by using Method of Moment (MoM) from IE3D Software. In this case, the result of bandwidth for low frequency and high frequency of one antenna are 11.29% and 62%, and other are 6.1% and 75.5%, respectively. The size with ground plane of double slot loop antenna can be reduced 12.9% or can be reduced size of double slot loop antenna about 21.5% when set the new inner conductor. © 2008 SICE.
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    Designing rectangular slot loop antenna for WLAN application
    (2005-01-01)
    Anantrasirichai, N.
    ;
    Chanoodhorm, S.
    ;
    Nakasuwan, J.
    ;
    Rakluea, P.
    ;
    Wakabayashi, T.
    This paper presents the design of rectangular microstrip slot loop antenna that competently achieves dual frequency operation by using a microstrip feed line. This antenna is designed at the resonance frequency 2.4 GHz and 5.2 GHz thereby covering the required frequency-bandwidth of 2.4-2.4836 GHz and 5.15-5.35 GHz, which are widely used in Wireless LAN (WLAN). The characteristics of antennas are proposed and analyzed for instance input impedance, Sn parameter and far field radiation patterns. The antenna is analyzed by Finite Difference Time Domain (FDTD) method which can predict and analysis of the electromagnetic responses of complex problems.