Author :
Nakamura, Takuto ; Yamagichi, Soichiro ; Yokoyama, Tsutomu ; Egashira, Shigeru
Author_Institution :
Sojo Univ., Kumamoto, Japan
Abstract :
We present the ladder antenna composed of multi-step rectangular loops, which are mounted on the ground plane. The ladder antennas with two-step of square loops, rectangular loops and multi-step loops are analyzed by the moment method, and the calculated results of radiation pattern are reported. It is shown that the radiations to Z-direction from the horizontal elements add in phase and the gain of the antenna in H plane increases.
Keywords :
antenna radiation patterns; antenna theory; method of moments; ground plane; ladder antenna; moment method; multi-step loop; radiation pattern; rectangular loop; square loop; two-step loop; Antenna radiation patterns; Frequency; Moment methods; Pattern analysis; Reflector antennas; TV broadcasting; Writing;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on
Print_ISBN :
0-7803-7486-X
DOI :
10.1109/ICMMT.2002.1187713
