Fractal monopole antenna for WLAN USB dongle
ABSTRACT This article presents the design and fabrication of a simple printed fractal monopole antenna for WLAN USB dongle applications. The proposed antenna uses the combination of meander line and fractal geometry, which is very simple and easy to fabricate, to achieve a multiband operation characteristic. The parameters of this antenna were optimized through numerical simulations in Ansoft HFSS, after which the antenna has been fabricated and characterized. The measurement results show that the proposed antenna has a -10 dB return loss bandwidth of 2.22 to 2.52 GHz and 5.03 to 5.84 GHz, which covers the entire required band for WLAN 802.11a/b/g standards. Moreover, from the simulation results, it is also observed that this proposed antenna exhibits constant gain of 1.8 dBi with 95% radiation efficiency in the lower band and 2.4 dBi with 94% radiation efficiency in the upper band, respectively.
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- "Using fractal geometries in the field of antenna design is popular and it has been used to design miniaturized multiband antennas. In , the multiband antenna used the combination of meander line and fractal geometry. It is found that the size of fractal geometry is important in defining both the resonant frequencies. "
ABSTRACT: By coupling a fractal loop resonator onto the back of a loaded-fractal loop monopole and a shorted loop, a new triple-band USB dongle antenna has been achieved and presented. The proposed antenna supports WLAN (2.4-2.5 GHz and 5.15-5.875 GHz) and WiMAX (3.4-3.6 GHz) applications. Omnidirectional radiation patterns for the three bands are observed. The overall dimensions of the fabricated prototype are 10 mm × 42 mm ×0.8 mm, which is suitable for USB dongle. The design of proposed antenna and experimental results are discussed.Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on; 01/2012
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ABSTRACT: A novel internal monopole antenna for wireless USB dongle application is proposed. The proposed antenna covers the WiBro, WLAN, Bluetooth, S-DMB, and WiMAX bands with a small size (15 mm × 5 mm × 1 mm). The overall dimension of the proposed antenna including the system ground is 45 mm × 15 mm × 1 mm. The proposed antenna consists of two strips and one stub. Two strips are connected by via mode (φ=0.4 mm). By adding a stub and stick-shaped strip, the wide dual resonant frequency characteristic can be achieved. Detailed design procedures and measured results of the prototype are discussed.
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ABSTRACT: In this paper, a printed two C-shaped monopoles array for WLAN MIMO application has been proposed. By using the neutralization technique, high isolation between the two antenna elements has been achieved while the distance between them is only 0.09λ<sub>2.4GHz</sub>. The experiment results indicate that the proposed antenna array has -10dB bandwidth from 2.34 to 2.55 GHz and has an isolation less than -12 dB over the entire required operation band. The proposed antenna has a compact size of 30×14 mm<sup>2</sup> and can be easily integrated into wireless devices.Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE; 08/2010