| 摘要 |
<p>An antenna apparatus (101) is configured from: a dielectric substrate (102); a ground conductor (103) formed on one surface of the dielectric substrate (102); a dielectric block (104) configured from a dielectric material having a high dielectric constant, such as a ceramic resin; and a first antenna element (105) and a second antenna element (107), which are formed on a dielectric block (104) by means of a conductor pattern. The first antenna element (105) is formed in a substantially annular shape so as to surround the second antenna element (107), and in a center portion of the ground conductor (103), four L-shaped slits (401a, 401b, 401c, 401d) formed by cutting the conductor pattern are configured. With the configuration, an antenna gain of the second antenna element can be improved without deteriorating performance of the first antenna element, thereby achieving high antenna performance.</p> |
