| 摘要 |
<p>Disclosed herein is a balun internal type loop antenna, in which a radiation patch is helically formed on the outer circumference of a dielectric in a direction from the lower portion of the dielectric to the upper portion thereof, and a feeding part having a balun therein is inserted into the dielectric, thus preventing leakage current of the antenna, and realizing the miniaturization of the antenna. The antenna includes a dielectric which has the shape of a hollow cylinder and has a predetermined dielectric constant. An electrode patch is helically formed on an outer circumference of the dielectric in a direction from a lower portion of the dielectric to an upper portion thereof. A feeding part is a printed circuit board inserted into the dielectric, having a ' - I - ' shape, and having five layers.</p> |
