Title :
Wideband microstrip-line-fed circularly polarized slot antenna with open slot structure
Author :
Chien-Yuan Pan ; Zi-Rong Peng ; Jen-Yea Jan ; Bo-Yao Wu
Author_Institution :
Dept. of Electron. Eng., Nat. Kaohsiung Univ. of Appl. Sci., Kaohsiung, Taiwan
Abstract :
A new wideband circularly polarized (CP) slot antenna with open slot structure using a microstrip-line for feeding is presented. The proposed antenna consists of an open C-slot with a straight slit on the ground plane, and a microstripline with a semi-circle-shaped patch on the other side of the substrate. The antenna size is reduced by about 35% compared with the circular slot antenna. By using the semi-circle-shaped patch to disturb the magnetic current distribution on the open C-slot, a wider CP bandwidth can be achieved. The measured results show that the proposed antenna can provide a 3 dB axial ratio (AR) bandwidth of 40% (4.1-6.2 GHz) and a 10 dB return loss impedance bandwidth of 107% (2.3-7.6 GHz).
Keywords :
broadband antennas; electromagnetic wave polarisation; microstrip antennas; microwave antennas; slot antennas; axial ratio bandwidth; bandwidth 2.3 GHz to 7.6 GHz; bandwidth 4.1 GHz to 6.2 GHz; circularly polarized slot antenna; ground plane; loss 10 dB; magnetic current distribution; open C-slot; open slot structure; semicircle-shaped patch; wideband microstrip-line; Antenna measurements; Bandwidth; Loss measurement; Microstrip; Microstrip antennas; Slot antennas; axial ratio (AR); circularly polarized (CP); magnetic current; open C-slot; semi-circle-shaped patch;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026753
