Title :
Spiral antenna with external feeding for planar applications
Author :
Gschwendtner, E. ; Löffler, D. ; Wiesbeck, W.
Author_Institution :
Inst. fur Hochstfrequenztech. & Elektronik, Karlsruhe Univ., Germany
fDate :
6/21/1905 12:00:00 AM
Abstract :
Spiral antennas are conventionally fed in the center of the spiral. For planar integration of the spiral antenna this conventional feeding structure is not possible. This contribution investigates the possibility of feeding an archimedean spiral antenna with two transmission lines connected to the outer radius of the spiral at opposite sides. Experimental results show that an operation bandwidth of 3:1 with radiation characteristics corresponding to the center-fed spiral is possible
Keywords :
antenna feeds; antenna radiation patterns; microwave antennas; spiral antennas; 6.2 GHz; archimedean spiral antenna; bandwidth; external feed; planar applications; planar integration; radiation characteristics; spiral antenna; transmission lines; Antenna feeds; Arm; Bandwidth; Frequency; Mobile antennas; Mobile communication; Planar transmission lines; Satellite broadcasting; Spirals; Transmission line antennas;
Conference_Titel :
Africon, 1999 IEEE
Conference_Location :
Cape Town
Print_ISBN :
0-7803-5546-6
DOI :
10.1109/AFRCON.1999.821910
