Title :
A directivity comparison between hemispherical and planar arrays
Author :
Li, Dan ; Feng, Zhenghe
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
Hemispherical arrays are charming in receiving and processing multiple signals with wide space distributions, especially in integrated navigation systems. In this paper the directivity of a hemispherical array is compared with several kinds of planar array. It shows that the hemispherical array has an attractive scanning directivity performance through the hemi-space above earth plane, especially with small numbers of elements. The effect of element pattern, element number and minimal element spacing is discussed.
Keywords :
antenna earths; antenna radiation patterns; directive antennas; planar antenna arrays; receiving antennas; scanning antennas; earth plane; element number; element pattern; hemi-space; hemispherical arrays; integrated navigation systems; minimal element spacing; multiple signals; planar arrays; scanning directivity performance; wide space distributions; Digital communication; Earth; Equations; Geometry; Global Positioning System; Laboratories; Microwave antenna arrays; Navigation; Planar arrays; Signal processing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551323
