抄録
A low-profile antenna having a bi-directional radiation pattern is presented. Previous antenna has side lobe at 0° degree on vertical plane. Therefore , we proposed an antenna using a loop element. We designed the antenna having a resonance frequency of 7 GHz. We simulated S11 characteristics and radiation pattern. As a result , proposed antenna can decrease side lobe of vertical plane and increase main lobe of horizontal plane in the parallel direction to the ground plane.