Title :
A novel element antenna with flat-topped pattern in the applications of limited scan array
Author :
Du, Hailong ; Yan, Lubin
Author_Institution :
China Acad. of Space Technol., Beijing, China
Abstract :
A novel element antenna for limited scan phased array of LEO satellite is proposed. A flat-topped element pattern is formed by the coupling from slots. With flat-topped element pattern, the gain degradations of the array over the scan volume are improved and grating lobes outside the scan volume are suppressed. The analysis is based on multi-mode scattering matrix method, with which high calculation speed and accuracy can be achieved. The results of calculation and measurement show that this element antenna can be applied for the limited scan array with ±25° scan. The results of calculation also show that the flat-topped element pattern and the reflection coefficient keep well at least in a 10% bandwidth.
Keywords :
S-matrix theory; antenna phased arrays; antenna radiation patterns; satellite antennas; scanning antennas; LEO satellite; flat-topped element pattern; limited scan phased array; multimode scattering matrix method; novel element antenna; reflection coefficient; Accuracy; Antenna arrays; Antenna measurements; Degradation; Gratings; Low earth orbit satellites; Phased arrays; Reflection; Satellite antennas; Scattering; flat-topped element pattern; grating lobe; limited scan arrays; multi-modes scattering matrix;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355551
