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    Ultra-wideband slot antenna on flexible substrate for WLAN/WiMAX/UWB Applications
    (2014-01-01)
    Archevapanich, Tuanjai
    ;
    Lertwatechakul, Mayuree
    ;
    Rakluea, Paitoon
    ;
    Anantrasirichai, Noppin
    ;
    Chutchavong, Vanvisa
    An ultra-wideband slot antenna on flexible substrate is designed to support a wide range of wireless communication systems. The antenna is a rectangular slot antenna fed by microstrip line with conductor strip and tuning stub on flexible substrate (Mylar Polyester film). The rectangular slot is etched out from the ground plane with conductor strip in the slot, and the other plane contains a microstrip line with tuning stub. The proposed antenna’s effective frequency range covers overall standard bands of WLAN, WiMAX, and UWB. The antenna was simulated and analyzed by using IE3D Zeland software [1]. And the simulation results presents the characteristics of the antenna in terms of bandwidth return loss, VSWR, and radiation patterns.
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    Trapezoid-stub fed rectangular slot antenna for WLAN and WiMAX applications
    (2010-12-01)
    Arsusiri, N.
    ;
    Sangaroon, O.
    ;
    Puntheeranurak, S.
    ;
    Anantrasirichai, N.
    This paper proposes the design of slot antenna for wideband use in wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications. The antenna structure is comprised of a rectangular slot antenna and excited microstrip transmission line. The antenna is designed on low cost FR4 substrate and the simulation results are analyzed by IE3D Zeland software [1]. The trapezoid tuning stub at the end of the microstrip line is proposed for decreasing return loss between frequency range 2.27 GHz to 6.21 GHz. The simulation result of return loss of the proposed antenna is shown that the operating bandwidth at frequency range of 2.27-6.21 GHz coverage standard of IEEE 802.11 b/g/j/a/h in WLAN (2.4-2.4835 GHz, 4.9-5.1 GHz, 5.15-5.35 GHz, 5.7-5.9 GHz) and WiMAX (2.5-2.7 GHz, 3.4-3.6. 5.7-5.9 GHz). The characteristics of antenna are proposed and analyzed for return loss, input impedance, bandwidth, VSWR, gain, and radiation pattern. ©ICROS.
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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.