Abstract
In this paper, a novel compact tri-band planar inverted-F antenna (PIFA) for mobile communication application is proposed. The antenna is capable to cover GSM 900 MHz, DCS 1.8 GHz and WLAN (IEEE 802.11b) 2.45 GHz bands. The proposed PIFA is composed of a quadratic Koch shape slit and a parasitic strip. The PIFA with the fractal shaped slit contributes to the first and second resonance while the shorted strip brings forth the third band. The impedance bandwidths of 84 MHz, 132 MHz and 81 MHz for GSM 900, DCS 1800 and WLAN (IEEE 802.11b) 2450, respectively are achieved. A realized gain of 2.44 dBi, 4.48 dBi and 3.86 dBi is obtained at 0.9 GHz, 1.8 GHz and 2.45 GHz, respectively. The proposed antenna is fabricated and |S11| dB is measured. Reasonable agreement between simulated results as well as measured results is obtained.
Highlights
An indispensable component in a wireless transceiver is an antenna
The shrinking of available antenna placement space has ushered into a new paradigm of transceiver design because of the advent of smart phones, where the designer puts in additional features which are based on different frequency bands
In [10], Hilbert curve Planar Inverted-F antenna (PIFA) geometry was employed for overall size reduction, but matching obtained at higher bands has not been impressive
Summary
An indispensable component in a wireless transceiver is an antenna. The shrinking of available antenna placement space has ushered into a new paradigm of transceiver design because of the advent of smart phones, where the designer puts in additional features which are based on different frequency bands. Multiband PIFA was obtained by implementing various shapes and sizes of slot and slit in the radiating patch [2]-[9]. Antenna designers developed the PIFA geometry with more compactness using slots and slits for tri-band application [12]-[14].In [15] another compact structure has been proposed, where a three branch top patch has been used to resonate three frequency bands. A simple and compact PIFA covering three frequency bands: GSM (900 MHz), DCS (1.8 GHz) and WLAN (IEEE 802.11b) 2.45 GHz is proposed invoking a fractal shaped slit on the radiating patch as well as adding a parasitic strip. A quadratic Koch shaped slit is implemented on the radiating patch to get the dual-band resonance frequency as well as to reduce the patch size.
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