Title :
A low-profile helix array antenna designed for DBS
Author :
Li, Zengrui ; Yang, Jianhang ; Guo, Qingxin ; Wang, Junhong ; Jiang, Wenbo
Author_Institution :
Sch. of Inf. Eng., Commun. Univ. of China, Beijing, China
Abstract :
A low-profile array antenna composed of 2-turn helices with pitch angle of 4° is designed for the direct broadcast from satellite (DBS), it has a frequency band ranging from 11.5GHz to 13.0GHz. The antenna elements are fed by a radial waveguide in which a traveling wave in transverse electromagnetic (TEM) mode is propagating. The exciting phase of each helical element can be adjusted by rotating mechanically the element around its axis. Promising performances of the antenna are predicted theoretically first, and then the experiments are done for verifying the efficiency of the design.
Keywords :
direct broadcasting by satellite; waveguide antenna arrays; DBS; antenna elements; direct broadcast from satellite; frequency 11.5 GHz to 13.0 GHz; helical element; helix array antenna; radial waveguide; transverse electromagnetic mode; traveling wave; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; Helical antennas; Low-profile; Mechanical rotation; Radial waveguide; Right-hand polarization;
Conference_Titel :
Microwave Technology & Computational Electromagnetics (ICMTCE), 2011 IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8556-7
DOI :
10.1109/ICMTCE.2011.5915157
