Title :
Frequency-Reconfigurable Bow-Tie Antenna for Bluetooth, WiMAX, and WLAN Applications
Author :
Tong Li ; Huiqing Zhai ; Xin Wang ; Long Li ; Changhong Liang
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A frequency-reconfigurable bow-tie antenna for Bluetooth, WiMAX, and WLAN applications is proposed. The bow-tie radiator is printed on two sides of the substrate and is fed by a microstripline continued by a pair of parallel strips. By embedding p-i-n diodes over the bow-tie arms, the effective electrical length of the antenna can be changed, leading to an electrically tunable operating band. The simple biasing circuit used in this design eliminates the need for extra bias lines, and thus avoids distortion of the radiation patterns. Measured results are in good agreement with simulations, which shows that the proposed antenna can be tuned to operate in either 2.2-2.53, 2.97-3.71, or 4.51-6 GHz band with similar radiation patterns.
Keywords :
Bluetooth; UHF antennas; WiMax; antenna feeds; antenna radiation patterns; bow-tie antennas; microstrip lines; microwave antennas; p-i-n diodes; wireless LAN; Bluetooth application; WLAN application; WiMAX application; antenna fed; embedding p-i-n diode; frequency 2.2 GHz to 2.53 GHz; frequency 2.97 GHz to 3.71 GHz; frequency 4.51 GHz to 6 GHz; frequency-reconfigurable bow-tie antenna radiation pattern; microstrip line; parallel strip; Antenna measurements; Antenna radiation patterns; Dipole antennas; Frequency measurement; Microstrip antennas; PIN photodiodes; Bow-tie antenna; frequency-reconfigurable; p-i-n diode;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2359199
