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    • 4. 发明授权
    • Radio frequency multiplexer for coupling antennas to AM/FM/WB, CB/WB, and cellular telephone apparatus
    • 用于将天线耦合到AM / FM / WB,CB / WB和蜂窝电话设备的射频多路复用器
    • US06297711B1
    • 2001-10-02
    • US09420233
    • 1999-10-19
    • Glen J. SewardPaul A. Bogdans
    • Glen J. SewardPaul A. Bogdans
    • H03H746
    • H01Q21/28H01Q1/3266H01Q5/321H01Q5/50H01Q9/32
    • An AM/FM/WB/CB/cellular telephone antenna includes a first frequency self-resonant circuit at a position above the lower end of the antenna such that the electrical length of the lower section of the antenna is equivalent to one-quarter wavelength for a frequency in the FM frequency range and a second frequency self-resonant circuit disposed below the first frequency self-resonant circuit. The first self-resonant circuit presents a high impedance in the FM frequency band and the second self-resonant circuit presents a high impedance in the cellular frequency range. The entire length of the antenna is equivalent to one-quarter wavelength in a frequency in the CB frequency band. The antenna wire is wound around a fiberglass core, and the FM self-resonant circuit is formed by a tightly wound, coiled section of the wire together with a thin-walled brass tube extending over the core in the area of the tightly wound section. A thin dielectric film is applied between the tube and the tightly wound section of antenna wire thereby forming a capacitor. Two antennas, each comprising two frequency self-resonant circuits, are connected by means of a multiplexing circuit to AM/FM/WB, CB/WB and cellular telephone apparatus.
    • AM / FM / WB / CB /蜂窝电话天线包括在天线下端上方的位置处的第一频率自谐振电路,使得天线的下部的电长度等于四分之一波长 FM频率范围内的频率和设置在第一频率自谐振电路下方的第二频率自谐振电路。 第一自谐振电路在FM频带中呈现高阻抗,第二自谐振电路在蜂窝频率范围内呈现高阻抗。 天线的整个长度等于CB频带频率的四分之一波长。 天线线缠绕在玻璃纤维芯上,FM自谐振电路由紧密卷绕的线的螺旋部分以及在紧密缠绕部分的区域中延伸穿过芯的薄壁黄铜管形成。 在该导管与天线的紧密缠绕部分之间施加薄介电膜,从而形成电容器。 每个包括两个频率自谐振电路的天线通过复用电路连接到AM / FM / WB,CB / WB和蜂窝电话设备。
    • 7. 发明授权
    • High powered multiband antenna
    • 高功率多频带天线
    • US06985121B1
    • 2006-01-10
    • US10711906
    • 2004-10-12
    • Paul A. BogdansGlen J. Seward
    • Paul A. BogdansGlen J. Seward
    • H01Q9/16
    • H01Q21/10H01Q1/3275H01Q5/40H01Q9/22
    • A multiband antenna has a lower conductive tube and three or more upper conductive tubes, all spaced from each other and disposed on the same longitudinal axis. A transmission line extends within the lower conductive tube to a first feed point and a second transmission line extends within the lower conductive tube and one or more of the upper conductive tubes to a second feed point. The lower and upper conductive tubes form a dipole radiator centered on the first feed point. The upper conductive tubes form a dipole radiator centered on the second feed point. One or more isolation circuits resonate in only one frequency band for signals transmitted along one of the transmission lines.
    • 多波段天线具有下导电管和三个或更多个上导电管,它们彼此间隔开并且设置在相同的纵轴上。 传输线在下导电管内延伸到第一馈电点,第二传输线在下导电管内延伸,并且一个或多个上导电管延伸到第二馈电点。 下部和上部导电管形成以第一馈电点为中心的偶极辐射器。 上导电管形成以第二馈电点为中心的偶极辐射体。 一个或多个隔离电路仅在一个频带中对沿着一条传输线传输的信号共振。