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

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

543

Lastpage

546

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);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2199274

Filename

6199948