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Access type: UnknownSubject: search.filters.subject.wireless local area network (WLAN)

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    Investigations of a Circularly Polarized Slotted Corner-Truncated Microstrip Patch Antenna with Split-Ring AMC Reflector
    (2025-01-01)
    Ainthachot, Chalanthon
    ;
    Janpangngern, Pisit
    ;
    Dentri, Sitthichai
    ;
    Phongcharoenpanich, Chuwong
    This paper presents the design and development of a circularly polarized slotted corner-truncated microstrip patch antenna integrated with a split-ring artificial magnetic conductor (AMC) metasurface for WLAN applications at 2.45 GHz. The antenna design incorporates structural adaptations, such as slotted apertures and corner truncations, to enhance impedance matching and achieve circular polarization. To further improve performance, a split-ring AMC metasurface was employed, resulting in enhanced polarization purity and bandwidth. The proposed design achieves an impedance bandwidth (|S<inf>11</inf>| below -10 dB) from 2.33 GHz to 2.75 GHz and an axial ratio (AR) below 3 dB over the frequency range of 2.40 GHz to 2.55 GHz, and a peak gain of approximately 4.40 dBic at 2.45 GHz. Simulated results are validated by measured results of the fabricated prototype, demonstrating close agreement and confirming the robustness of the design methodology. This work highlights an innovative approach to compact and high-performance antenna design, ensuring its suitability for modern WLAN communication systems.
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    Compact split circular ring shape dual-band antenna with open ring and additional strip
    (2016-09-06)
    Chawanonphithak, Yuktitath
    ;
    Phongcharoenpanich, Chuwong
    A dual-band antenna designed at the wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) bands is presented compact split circular ring shape dual-band antenna with open ring and addition strip. Its size is compact by the recondition circular ring shaped resonator connected. The antenna is fabricated onto a printed circuit board (PCB) on FR-4 substrate and the relative permittivity of 4.4, an overall size of 23 mm × 30 mm × 0.8 mm. This antenna can easily adjusted with open ring and strip to match impedance using a 50 ohm transmission line with SMA connector. The measured results show that the compacted antenna achieves a dual-band operating bandwidth from 2.38 GHz to 2.56 GHz and 4.66 GHz to 7.29 GHz for 11 S below -10 dB and the antenna yields omnidirectional patterns. The measured gains of the antenna from 2.45 and 5.5 GHz frequencies are 1.55 dBi and 3.2 dBi, respectively.
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    Compact dual-band I-shaped patch antenna with longitudinal strip on inverted-T ground plane
    (2014-01-01)
    Chawanonphithak, Yuktitath
    ;
    Phongcharoenpanich, Chuwong
    This paper presents a compact dual-band I-shaped patch antenna with longitudinal strip on inverted-T ground plane for wireless local area network (WLAN) applications over the frequency band of 2.400-2.484 GHz and 5.150-5.350 GHz. The I-shaped patch antenna and inverted-T ground plane are etched onto a piece of printed circuit board (PCB) with an overall size of 40 mm × 60 mm × 1.6 mm. It is excited by strip line to match impedance with a 50 ω transmission line. The measured results show that the miniaturized antenna achieves a broad operating bandwidth of 2.26-2.89 GHz and 4.92-5.83 GHz for S<inf>11</inf><-10 dB and omnidirectional radiation pattern. The measured gains of the antenna at 2.4 GHz and 5.2 GHz frequencies are 1.90 dBi and 3.45 dBi, respectively. © 2014 IEEE.
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    Miniaturized dual-band II-shaped monopole antennas with modified rectangular ground plane
    (2014-01-01)
    Chawanonphithak, Yuktitath
    ;
    Phongcharoenpanich, Chuwong
    Dual-band antenna covering IEEE 802.11a/b/g bands is presented using a miniaturized II-shaped monopole antennas with modified rectangular strip ground plane for dualband WLAN operation over the frequency band of 2.400-2.484 GHz, 5.150-5.350 GHz and 5.725-5.825GHz. The II-shaped monopole antenna and with modified rectangular ground plane are etched onto a piece of printed circuit board (PCB) with an overall size of 25 mm × 44 mm × 1.6 mm. This antenna can easily be fed by strip line to match impedance using a 50 ohm transmission line with SMA connector. The measured results show that the miniaturized antenna achieves a broad operating bandwidth of 2.26-2.89 GHz and 4.92-5.83 GHz for -S<inf>11</inf>-< -10 dB and omnidirectional radiation pattern. The measured gains of the antenna from 2.400 to 2.484 GHz and 5.150 to 5.825 GHz frequencies are 1.3 dBi and 2.5 dBi, respectively. © 2014 IEEE.