Title :
Bandwidth Enhancement of CPW-Fed Circle-Like Slot Antenna With Dual Band-Notched Characteristic
Author :
Emadian, Seyed Ramin ; Ghobadi, Changiz ; Nourinia, Javad ; Mirmozafari, MirHamed ; Pourahmadazar, Javad
Author_Institution :
Dept. of Electr. & Electron. Eng., Urmia Univ., Urmia, Iran
fDate :
7/4/1905 12:00:00 AM
Abstract :
A novel single-layer dual band-notched printed circle-like slot antenna for ultrawideband (UWB) applications is presented. The proposed antenna comprises a circle-like slot, a trident-shaped feed line, and two nested C-shaped stubs. By using a trident-shaped feed line, much wider impedance bandwidth is obtained. Due to inserting a pair of nested C-shaped stubs on the back surface of the substrate, two frequency band-notches of 5.1-6.2 (WLAN) and 3-3.8 GHz (WiMAX) are achieved. The nested stubs are connected to the tuning stub using two cylindrical via pins. The designed antenna has a total size of 26 × 30 mm2 and operates over the frequency band between 2.5 and 25 GHz. Throughout this letter, experimental results of the impedance bandwidth, gain, and radiation patterns are compared and discussed .
Keywords :
WiMax; antenna feeds; antenna radiation patterns; bandwidth allocation; coplanar waveguides; impedance matching; microstrip antennas; multifrequency antennas; slot antennas; tuning; ultra wideband antennas; wireless LAN; CPW-fed circle-like slot antenna; UWB applications; WLAN; WiMAX; bandwidth enhancement; cylindrical via pins; designed antenna; dual band-notched characteristic; frequency 3.0 GHz to 3.8 GHz; frequency 5.1 GHz to 6.2 GHz; frequency band-notches; gain; impedance bandwidth; nested C-shaped stubs; radiation patterns; single-layer dual band-notched printed circle-like slot antenna; trident-shaped feed line; tuning stub; ultrawideband applications; Antenna measurements; Antenna radiation patterns; Bandwidth; Feeds; Impedance; Slot antennas; Ultra wideband antennas; C-shaped stubs; circle-like slot; dual band-notched antenna; ultrawideband (UWB);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2199274
