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http://dx.doi.org/10.5515/KJKIEES.2010.21.7.778

Design of Dual-Band Monopole Antenna Fed-by CPW Using Asymmetric Ground Plane  

Lee, Sang-Min (College of Electrical and Computer Engineering, Chungbuk National University)
Kim, Nam (College of Electrical and Computer Engineering, Chungbuk National University)
Lee, Seung-Woo (College of Electrical and Computer Engineering, Chungbuk National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.7, 2010 , pp. 778-785 More about this Journal
Abstract
The folded monopole antenna for applying mobile communications equipment and wireless devices is presented in this paper. By using the coplanar waveguide feed the operating bandwidth has improved. In addition, each individual resonant elements has occurred different capacitance through asymmetrical left and right ground planes; therefore, the bandwidth has kept and the impedance matching has stabilized. By measurement results, the impedance bandwidth under VSWR< 2.5:1 are $824{\sim}890$ MHz and the $1,500{\sim}2,170$ MHz, also radiation patterns has omni-directional characteristics. The maximum gains of the proposed antenna are 5.52, 0.64, 3.00, 0.94 and 1.85 dBi at 850, 1,575, 1,790, 1,930 and 2,050 MHz respectively. The proposed antenna will be adapted to the internal antenna of the mobile communication devices.
Keywords
Coplanar Waveguide; Monopole Antenna; Dual-Band; Asymmetric Ground;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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