Title :
A CPW-fed staircase shape antenna with dual stopband characteristic for UWB communications
Author :
Bi, Dan-Hong ; Yu, Zhi-Yuan
Author_Institution :
Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
A coplanar waveguide (CPW) -fed staircase shape antenna with dual stopband characteristic is presented in this paper. The proposed antenna consists of a CPW-rectangular feeding line and a symmetrical staircase shape radiation patch. By using a U-slot in the feeding line, a stopband of 800 MHz for band rejection of wireless local area network (WLAN) is achieved. Another stopband of 600 MHz is obtained by implanting two slits in the ground plane. Experimental results show the designed antenna, with a compact size of 34 mm times 25.4 mm, has an impedance bandwidth of 3.01-10.67 GHz for voltage standing wave radio (VSWR) less than 2, except two frequency stopbands of 3.4-4.2 GHz and 5.1-5.9 GHz. Moreover, the antenna also shows omnidirectional radiation patterns in the H-lane and good gain flatness.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguides; microwave antennas; ultra wideband antennas; ultra wideband communication; CPW-fed staircase shape antenna; CPW-rectangular feeding line; H-lane; UWB communications; coplanar waveguide; dual stopband characteristic; frequency 3.01 GHz to 10.67 GHz; frequency 3.4 GHz to 4.2 GHz; frequency 5.1 GHz to 5.9 GHz; frequency 600 MHz; frequency 800 MHz; gain flatness; omnidirectional radiation patterns; symmetrical staircase shape radiation patch; voltage standing wave radio; wireless local area network; Antenna feeds; Bandwidth; Coplanar waveguides; Frequency; Impedance; Shape; Ultra wideband antennas; Ultra wideband communication; Voltage; Wireless LAN;
Conference_Titel :
Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-2192-3
Electronic_ISBN :
978-1-4244-2193-0
DOI :
10.1109/ISAPE.2008.4735160
