Title :
Circularly polarized array antennas with electromagnetically coupled cross slot radiator
Author :
Min, Kyeong-Sik ; Ko, Ji-Won ; Arai, Hiroyuki ; Kim, Dong-Il
Author_Institution :
Dept. of Radio Sci. & Eng., Korea Maritime Univ., Pusan, South Korea
Abstract :
A circularly polarized cross slot array antennas fed by an open-ended microstrip line has been described. To obtain the broad impedance bandwidth, the cross slot is electromagnetically coupled to the feed line. The optimum parameters of a single element and an array with 15-elements are derived, and the beam tilting angle toward elevation direction is also presented. The calculated return loss and axial ratio of the 15-element array are -25 dB below and 1.4 dB below at DBS bands, respectively
Keywords :
antenna feeds; antenna radiation patterns; electromagnetic coupling; electromagnetic wave polarisation; losses; slot antenna arrays; 15-element array; DBS bands; EM-coupled cross slot; axial ratio; beam tilting angle; broad impedance bandwidth; circularly polarized array antennas; cross slot array antennas; electromagnetic coupling; open-ended microstrip line feed; optimum parameters; return loss; Antenna arrays; Bandwidth; Electromagnetic coupling; Electromagnetic wave polarization; Feeds; Impedance; Microstrip antenna arrays; Microstrip antennas; Satellite broadcasting; Slot antennas;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985335
