Title :
Design for optimal axial ratio of spiral antenna for NLJD system
Author :
Jae-Hwan Jeong ; Kyeong-Sik Min ; Jeong-Won Kim ; Chan-Jin Park ; In-hwan Kim
Author_Institution :
Dept. of Radio Commun. Eng., Korea Maritime Univ., Busan, South Korea
Abstract :
This paper describes a design for the optimal axial ratio of the spiral antenna applied for NLJD system. To improve the axial ratio, the archimedean slit conductor on ground plane is newly designed by comparison with the conventional antenna [2]. The improved axial ratio of 3 dB below is realized by the optimized cutting slit of DFG and PGE. The measured E-field radiation patterns and the main beam directivity toward +z axis direction are agreed well with the simulated results.
Keywords :
antenna radiation patterns; conductors (electric); spiral antennas; DFG; E-field radiation patterns; NLJD system; PGE; archimedean slit conductor; beam directivity; ground plane; optimal axial ratio design; optimized cutting slit; spiral antenna; Antenna measurements; Antenna radiation patterns; Broadband antennas; Loss measurement; Metals; Spirals; Broad bandwidth; Circular Polarization; Metal cap; NLJD System; Non-linear device; Spiral Antenna;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2012 Asia-Pacific
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1330-9
Electronic_ISBN :
978-1-4577-1331-6
DOI :
10.1109/APMC.2012.6421739
