Title :
High gain spiral antenna with conical wall
Author :
Jae-Hwan Jeong ; Kyeong-Sik Min ; In-hwan Kim ; Sung-min Kim
Author_Institution :
Dept. of Radio Commun. Eng., Korea Maritime Univ., Busan, South Korea
Abstract :
This paper presents design for a spiral antenna with conical wall to realize the high gain. To improve the axial ratio and the gain of spiral antenna, the conical wall and the optimized Archimedean slit on ground plane are novel designed for the conventional antenna with the circular cavity wall and with the 4.5-turn slit. The good axial ratio of 1.9 dB below and the improved gain of 9.5 dBi above are measured by the added conical wall and the novel designed slit on ground plane, respectively. The measured E-field radiation patterns and main beam directivity toward +z axis direction are agreed well with the simulated results.The proposed antenna will be applied for the NLJD system.
Keywords :
antenna radiation patterns; conical antennas; spiral antennas; Archimedean slit; E-field radiation patterns; NLJD system; axial ratio; circular cavity wall; conical wall; ground plane; high gain spiral antenna; main beam directivity; Antenna measurements; Antenna radiation patterns; Cavity resonators; Gain; Loss measurement; Spirals;
Conference_Titel :
Antennas & Propagation (ISAP), 2013 Proceedings of the International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-7-5641-4279-7
