| 摘要 |
An antenna includes a simple structure and a small null angle, which achieves communication using a circularly-polarized wave. The antenna includes a conductive wire arranged in loops in such a way as to form a cross shape. A part at which two line portions projecting outward from the center portion define a right angle is included in the loop path of the conductive wire. This part allows the antenna to transmit and receive an electromagnetic wave in all directions and have a circular polarization characteristic.
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