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Design and Application of Triple-Band Planar Dipole Antennas

In this paper, we propose the low-profile planar triple symmetric arms dipole antennas for wireless communication applications. Three symmetric arms are etched on the metallic layer of a single sided printed circuit board to form the planar dipole antenna. For different applications, we present two antennas based on similar design concepts. For the first antenna, it can be operated at 2.45/3.5/5.8 GHz, and for the second one, it can be operated at 0.9/1.8/2.45 GHz, respectively. The size parameters of symmetric arms are changed to design and fabricate the antenna operating at these specific frequencies. We use IE3D software to design the two triple-band planar antennas and choose the better parameters to manufacture the proposed ones. We also discuss about the influences of dimension parameter of the proposed antennas on the resonant frequencies and impedance bandwidths of our implementations. Proposed antennas are small in sizes, and they can be applicable in GSM, RFID and WLAN frequency bands.