Title :
Broadband Microstrip-Coplanar Stripline-Fed Circularly Polarized Spiral Antenna
Author :
Tu, Wen-Hua ; Li, Ming-yi ; Chang, Kai
Author_Institution :
Texas A&M Univ., College Station, TX
Abstract :
A wideband microstrip-coplanar stripline-fed circularly polarized spiral antenna is presented. An electromagnetic coupled wideband balun from microstrip line to coplanar stripline is developed to feed the spiral antenna. The antenna shows a measured return loss of better than 10 dB from 6.85 GHz to 11.9 GHz. The axial ratio is smaller than 3 dB from 7 to 11.5 GHz
Keywords :
antenna feeds; baluns; broadband antennas; electromagnetic coupling; electromagnetic wave polarisation; microstrip antennas; microstrip lines; spiral antennas; 6.85 to 11.9 GHz; axial ratio; broadband microstrip-coplanar stripline-fed circularly polarized spiral antenna; coplanar stripline; electromagnetic coupled wideband balun; microstrip line; spiral antenna feed; wideband antenna; Antenna feeds; Antenna measurements; Broadband antennas; Electromagnetic coupling; Electromagnetic wave polarization; Impedance matching; Loss measurement; Microstrip antennas; Spirals; Stripline;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711417
