Title :
A frequency reconfigurable antenna design for UWB applications
Author :
Tummas, P. ; Krachodnok, Piyaporn ; Wongsan, Rangsan
Author_Institution :
Sch.: Telecommun. Eng., Suranaree Univ. of Technol., Nakhonratchasima, Thailand
Abstract :
This paper proposes a frequency reconfigurable antenna system designed for cognitive radio applications. The antenna structure consists of a sensing antenna and a frequency reconfigurable antenna system. The sensing antenna scans the channel to discover frequency bands while the reconfigurable section is tuning to communicate within these bands. A reconfigurable antenna consists of five different patches and there frequencies cover from 2.1 GHz to 10.6 GHz. The frequency agility is achieved via a rotational motion of the patch antennas. The rotation is controlled by a stepping motor mounted on the back of the antenna structure and the motor´s rotational motion is controlled by MEMS switch connected to a microcontroller. A frequency reconfigurable antenna offers many advantages such as easy fabrication, suitability for installation and coverage spectrum UWB (Ultra Wideband).
Keywords :
UHF antennas; antenna radiation patterns; cognitive radio; frequency agility; microcontrollers; microstrip antennas; microswitches; stepping motors; ultra wideband communication; MEMS switch; UWB applications; antenna structure; cognitive radio applications; frequency 2.1 GHz to 10.6 GHz; frequency agility; frequency bands; frequency reconfigurable antenna system; microcontroller; patch antennas; rotational motion; sensing antenna; stepping motor; Antenna radiation patterns; Cognitive radio; Sensors; Shape; Ultra wideband antennas; MEMS switch; cognitive radio; reconfigurable antenna; stepping motor;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on
Conference_Location :
Nakhon Ratchasima
DOI :
10.1109/ECTICon.2014.6839850
