Title :
Switchable Quad-Band Antennas for Cognitive Radio Base Station Applications
Author :
Wu, Terence ; Li, Rong Lin ; Eom, Soon Young ; Myoung, Seong Sik ; Lim, Kyutae ; Laskar, Joy ; Jeon, Soon Ik ; Tentzeris, Manos M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
5/1/2010 12:00:00 AM
Abstract :
A novel antenna configuration for quad-band operation is presented. The quad-band antenna has a directional radiation pattern in four frequency bands, i.e., B1 (800-900 MHz), B2 (1.7-2.5 GHz), B3 (3.3-3.6 GHz), and B4 (5.1-5.9 GHz), covering all spectrums for existing wireless applications, such as GSM, PCS, WCDMA, WiFi, and WiMax. The operating frequency of the quad-band antenna can be adjusted by the use of a MEMS switch, making it suitable for cognitive radio applications. First a switchable quad-band antenna element is introduced. Then a two-element antenna array is developed to increase the antenna gain for base station applications featuring a gain value of about 9-11 dBi over all four frequency bands.
Keywords :
antenna arrays; antenna radiation patterns; cognitive radio; microswitches; multifrequency antennas; GSM; MEMS switch; PCS; WCDMA; WiFi; WiMax; cognitive radio base station; directional radiation pattern; frequency 1.7 GHz to 2.5 GHz; frequency 3.3 GHz to 3.6 GHz; frequency 5.1 GHz to 5.9 GHz; frequency 800 MHz to 900 MHz; switchable quad-band antenna; two-element antenna array; Antenna radiation patterns; Base stations; Cognitive radio; Directive antennas; Frequency; GSM; Microswitches; Multiaccess communication; Personal communication networks; WiMAX; Base station antenna; cognitive radio; quad-band antenna; switchable antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2044472
