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Journal of Emerging Trends in Computing and Information Sciences >> Call for Papers Vol. 8 No. 3, March 2017

Journal of Emerging Trends in Computing and Information Sciences

A Dual-Band U-Slot PIFA Antenna with Ground Slit for RFID Applications

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Author D. K. Naji, Abdul-Kareem A. A Mohammed
ISSN 2079-8407
On Pages 213-220
Volume No. 4
Issue No. 2
Issue Date March 01, 2013
Publishing Date March 01, 2013
Keywords Antenna, Dual-band, U-slot, PIFA


Abstract

In this paper, a Planar Inverted-F Antenna (PIFA) with U-Slot (U-PIFA) and slit in ground is introduced. The proposed PIFA is compact with single coaxial feed, single short strip, and single short pin. The main achievement of this research was the design of ISM Microwave bands 2.45/5.8 GHz dual band PIFA antenna by using slit in ground to control the selection of lower resonance frequency without any mutual effect on the upper resonance frequency which determined from U-slot in the patch. The dielectric constant of the substrate is 4.3 and loss tangent of 0.013, FR-4 substrate. The characteristics (input impedance, and the far field radiation pattern) of the U-PIFA were analyzed by a CST (Computer Simulation technology) Microwave Studio package. The maximum impedance bandwidths achieved are ~8.44% centered at 2.45 GHz and ~ 6.78% centered at 5.8 GHz for a return loss less than 10 dB with nearly omni directional pattern suitable for RFID applications. The antenna gains for frequency 2.45 GHz and 5.8 GHz are 2.2 dB and 6.55 dB, respectively
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