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    • 5. 发明授权
    • Antenna apparatus including multiple antenna portions on one antenna element operable at multiple frequencies
    • 天线设备包括在多个频率上可操作的一个天线单元上的多个天线部分
    • US08773317B2
    • 2014-07-08
    • US13063317
    • 2010-05-26
    • Tsutomu SakataAtsushi YamamotoSatoru Amari
    • Tsutomu SakataAtsushi YamamotoSatoru Amari
    • H01Q1/00
    • H01Q13/10H01Q1/521H01Q5/28H01Q5/50H01Q9/285H01Q9/40H01Q21/28
    • An antenna apparatus includes a slit provided on an antenna element between first and second feed ports; and a series resonant circuit provided at a location along the slit, with a distance from an opening of the slit. When the antenna apparatus operates at a first isolation frequency identical to a resonance frequency of the series resonant circuit, the series resonant circuit is short-circuited, and only a section of the slit from its opening to the series resonant circuit resonates, thus providing isolation between the feed ports at the first isolation frequency. When the antenna apparatus operates at a second isolation frequency lower than the first isolation frequency, the series resonant circuit is open, and the entire slit resonates, thus providing isolation between the feed ports at the second isolation frequency.
    • 天线装置包括设置在第一和第二馈送端口之间的天线元件上的狭缝; 以及串联谐振电路,其设置在沿着狭缝的位置处,与狭缝的开口相距一定距离。 当天线装置以与串联谐振电路的谐振频率相同的第一隔离频率工作时,串联谐振电路短路,并且只有狭缝从其开口到串联谐振电路的一部分谐振,从而提供隔离 在第一隔离频率的馈送端口之间。 当天线装置以低于第一隔离频率的第二隔离频率工作时,串联谐振电路断开,并且整个狭缝共振,从而在第二隔离频率的馈电端口之间提供隔离。