| 摘要 |
<p>A patch antenna device and an antenna device that are miniaturized while avoiding degradation of radiation characteristics, such as a gain and an efficiency, are provided. A first electrode 3 is formed on a front surface 2a of a rectangular parallelepiped-shaped dielectric substrate 2. A second electrode 4 is formed on a rear surface 2b of the dielectric substrate 2. The first electrode 3 is connected through a coaxial cable 120 to a power supply unit 100. Then, the width W of each of the first and second electrodes 3 and 4 is smaller than or equal to a quarter of the length L thereof, and the thickness T of the dielectric substrate 2 is larger than or equal to the above width W. More preferably, the second electrode 4 is set so as to be longer than the first electrode 3, and both end portions of the second electrode 4 are bent and arranged on both end surfaces 2e and 2f of the dielectric substrate 2.</p> |
