A SIMPLE PENTA-BAND RECONFIGURABLE ANTENNA FOR MOBILE DEVICE APPLICATIONS

A simple reconfigurable antenna for mobile device applications is proposed in this letter. The proposed structure uses a conventional planar inverted-F antenna as its basic geometry and a single PIN diode embedded in the middle of the shorting line. The proposed antenna has two resonances (f1 and f2). These resonances are easily controlled by electrically controlling the on/off state of the PIN diode. The measured results show that the basic resonance f1 covers the GSM850 (824-894 MHz) and GSM900 (880-960 MHz) bands in the lower band, and the harmonic resonance f2 includes digital communication system (1710-1880 MHz), personal communication system (1850-1990 MHz), and universal mobile telecommunications system (1920-2710 MHz) bands in the higher band. Therefore, the proposed antenna achieves penta-band wireless wide area network operation. © 2014 Wiley Periodicals, Inc.