| 摘要 |
Provided is a variable-type spiral antenna. According to an embodiment of the present invention, the variable-type spiral antenna includes: a power feeding metal conductor formed in a spiral pattern on a dielectric substrate or in a free space; a grounding metal conductor which is separated from the power feeding metal conductor at a certain distance, is electrically short-circuited, and is formed in a spiral pattern on an inner line or an outer line of the power feeding metal conductor; a first metal conductor which is arranged on an outer line of the power feeding metal conductor or the grounding metal conductor and is electrically connected to the power feeding metal conductor or the grounding metal conductor; and a second metal conductor arranged on an outer line of the first metal conductor. The power feeding metal conductor and the grounding metal conductor are formed on the same plane of the dielectric substrate or the free space and are electrically connected to each other through the first metal conductor. |
