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Author: search.filters.author.Benjankaprasert, C.

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    Improvement microstrip patch antenna for ultra-wideband by C-shaped wide slot
    (2010-12-01)
    Satthamsakul, S.
    ;
    Puntheeranurak, S.
    ;
    Benjankaprasert, C.
    ;
    Anantrasirichai, N.
    ;
    Wakabayashi, T.
    The simple rectangular patch antenna is designed at frequency 7 GHz and matched impedance with 50 ohms of transmission line. The technique to achieved widest bandwidth from 3 GHz to 12 GHz coverage standard of UWB applications is proposed by etches out slot on the ground plane with inset technique. The configuration and the size of slot on the ground plane are important to enhanced bandwidth, and inset feed is used for good impedance matching in wide frequency range. The radiation patterns of each frequency show the bi-directional with null at angle ±90°. ©ICROS.
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    Active low pass notch filter using Multielectrode Distributed RC circuit
    (2010-01-01)
    Pirajnanchai, V.
    ;
    Benjankaprasert, C.
    ;
    Janchitrapongvej, K.
    This paper describes the active low pass notch filter using Multielectrode Distributed RC circuit. The new circuit consists of one Multielectrode Distributed RC circuit and single gain amplifier. The structure reduces an amount of circuit complexity and is sample to use for filter applications. Experiments and computer simulation showed good agreement with theoretical values. © 2010 IEEE.
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    Gain and radiation improvement technique for rectangular patch antenna
    (2009-01-01)
    Satthamsakul, S.
    ;
    Puntheeranurak, S.
    ;
    Benjankaprasert, C.
    ;
    Anantrasirichai, N.
    ;
    Wakabayashi, T.
    This paper proposed the techniques for improved gain and radiation patterns include bandwidth enhancement of patch antenna by cutting slots in the ground plane. We proposed three styles of slot cut in the ground plane. There are narrow slot, wide slot, and wide slot with conductor strips. Each style is shown the gain improvement with wideband use in X-band communication systems. Finally, the gain is 6.96 dBi at frequency 10.5 GHz and the average gain from 8 to 10.5 GHz is 4.97 dBi. The radiation pattern shown the low back lobe with good directivity.