Title :
The performance of a linearly polarised RLSA antenna for different beam squint angles
Author :
Davis, Paul W. ; Bialkowski, Marek E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queensland Univ., St. Lucia, Qld., Australia
Abstract :
In the standard design of the linearly polarised Radial Line Slot Array (RLSA) antenna, the efficiency is poor due to a high return loss. This paper investigates a method of reducing this return loss figure by squinting the main beam direction. Three prototype antennas with squint angles of 0° (standard broadside), 10° and 20° were produced and investigated. Measurements on these prototypes indicate a significant improvement in return loss, and an ability to accurately design the beam tilt angle
Keywords :
antenna radiation patterns; antenna theory; electromagnetic wave polarisation; losses; slot antenna arrays; beam squint angles; beam tilt angle design; linearly polarised RLSA antenna; main beam direction; radial line slot array; return loss reduction; Antenna feeds; Antenna measurements; Australia; Linear antenna arrays; Optical reflection; Performance loss; Polarization; Prototypes; Satellite broadcasting; Slot antennas;
Conference_Titel :
Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific
Print_ISBN :
962-442-117-X
DOI :
10.1109/APMC.1997.654626
