Title :
A monopole antenna with circular polarization
Author :
Meng-Hong Shih ; Kai-Lung Hsiao ; Chien-Jen Wang
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Tainan, Tainan, Taiwan
Abstract :
A monopole antenna with coplanar-waveguide (CPW) feeding structure is developed for multiple wireless communication system integration. By tuning one of the CPW ground-plane widths can increase the impedance bandwidth. The circular polarization at 1.57 GHz is excited without adding extra design circuits. A parasitic inverted-L radiating strip is shorted to the ground plane in order to cover the required bandwidth of the wireless local area network (WLAN) system. The measured impedance bandwidth of a S11<;-10 dB ranges from 1.37 to 2.82 GHz, and the 3-dB axial-ratio bandwidth is about 3.8 % with respect to 1.56 GHz.
Keywords :
coplanar waveguides; electromagnetic wave polarisation; impedance matching; monopole antennas; radiocommunication; CPW feeding structure; CPW ground-plane widths; WLAN system; bandwidth 1.37 GHz to 2.82 GHz; circular polarization; coplanar-waveguide feeding structure; frequency 1.57 GHz; impedance bandwidth; monopole antenna; parasitic inverted-L radiating strip; wireless communication system; wireless local area network; Antenna measurements; Bandwidth; Coplanar waveguides; Impedance; Microstrip antennas; Polarization; Coplanar waveguide; ground plane; impedance bandwidth;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026798
