A novel, cedar-shaped, coplanar waveguide-fed frequency reconfigurable antenna is\nproposed. The presented antenna uses low-cost FR4 substrate with a thickness of 1.6 mm. Four PIN\ndiodes are inserted on the antenna surface to variate the current distribution and alter the resonant\nfrequencies with different combinations of switches. The proposed antenna is fabricated and\nmeasured for all states, and a good agreement is seen between measured and simulated results.\nThis antenna resonates within the range of 2 GHz to 10 GHz, covering the major wireless applications\nof aviation service, wireless local area network (WLAN), worldwide interoperability for microwave\naccess (WiMAX), long distance radio telecommunications, and X-band satellite communication.\nThe proposed antenna works resourcefully with reasonable gain, significant bandwidth, directivity,\nand reflection coefficient. The proposed multiband reconfigurable antenna will pave the way\nfor future wireless communications including WLAN, WiMAX, and possibly fifth-generation\n(5G) communication.
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