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    • 2. 发明申请
    • ANTENNA APPARATUS
    • 天线装置
    • WO02075853B1
    • 2003-03-20
    • PCT/JP0202454
    • 2002-03-15
    • MATSUSHITA ELECTRIC IND CO LTDFUKUSHIMA SUSUMUYUDA NAOKI
    • FUKUSHIMA SUSUMUYUDA NAOKI
    • H01Q1/24H01Q5/00H01Q9/04H01Q13/08
    • H01Q13/085H01Q1/242H01Q5/371H01Q5/378H01Q9/0421H01Q9/0442
    • A small-sized antenna apparatus with wide-band frequency characteristics suitable for loading on a mobile communication equipment. This antenna apparatus comprises a platelike radial element (radial plate) and a ground plate opposite it in parallel. The power feed section is located nearly at the center of the rim edge section of the radial plate and supplies a high-frequency signal. The short-circuiting section short-circuits the radial plate and the ground plate near the power feed section. Two resonators are formed on the radial plate by providing a slit in the rim edge section nearly facing the power feed section. The coupling degree of the two resonators is optimized by adjusting the shape or dimensions of this slit or loading a reactance element or a conductor plate on the slit. Thus, a small-sized and short antenna is obtained with suitable characteristics.
    • 一种具有宽带频率特性的小型天线装置,适合于在移动通信设备上载入。 该天线装置包括平板状的径向元件(径向板)和与其平行相对的接地板。 供电部分位于径向板的边缘部分的中心附近,并提供高频信号。 短路部分使馈电部分附近的径向板和接地板短路。 通过在靠近馈电部分的边缘部分中设置狭缝,在径向板上形成两个谐振器。 通过调节该狭缝的形状或尺寸或者在狭缝上加载电抗元件或导体板来优化两个谐振器的耦合度。 因此,获得具有适当特性的小尺寸和短天线。