| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiation antenna for radio communication, capable of controlling directivity with an increased gain while suppressing a scale in a height direction. <P>SOLUTION: The radiation antenna for radio communication includes a linear antenna element 10 and an arm element 20. The linear antenna element 10 extends from a power feeding unit 15. The arm element 20 is provided to increase the gain of the linear antenna element 10 and to control directivity, and is connected to the tip on the far side from the power feeding unit 15. An electric length from the power feeding unit 15 through the linear antenna element 10 to the open end of the arm element 20 is designed to resonate at a higher order mode of a target frequency. <P>COPYRIGHT: (C)2013,JPO&INPIT |
