Title :
A novel circular-polarized array antenna based on substrate integrated waveguide for satellite communication
Author :
Jung, E.Y. ; Seo, T.Y. ; Kang, J.H. ; Lee, J.W. ; Lee, T.K. ; Lee, W.K.
Author_Institution :
Sch. of Electron., Telecommun. & Comput. Eng., Korea Aerosp. Univ., Goyang, South Korea
Abstract :
A circular-polarized array antenna having a novel feeding structure like a substrate integrated waveguide(SIW), SIW-based power divider, and sequentially rotated cavity-backed single element is proposed for satellite communication and enhancement of electrical performances in a double-layered fabrication. The bandwidth enhancements in terms of CP generation and broadband impedance matching characteristics are accomplished by using a fixed phase shifter and simple shorting via between the top patch and bottom ground plane. In addition, a broadband impedance bandwidth of 10% and a RHCP axial ratio of 5.7% have been obtained under the condition of less than VSWR 2:1 and axial ratio −3 dB, respectively.
Keywords :
Antenna arrays; Antenna feeds; Bandwidth; Character generation; Impedance matching; Optical device fabrication; Phase shifters; Power dividers; Satellite antennas; Satellite communication;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
