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公开(公告)号：US06384696B1
公开(公告)日：2002-05-07
申请号：US09568211
申请日：2000-05-09
申请人： Paul E. Miller , Paul A. Bogdans , Glen J. Seward
发明人： Paul E. Miller , Paul A. Bogdans , Glen J. Seward
IPC分类号： H03H746
CPC分类号： H03H7/463
摘要： A multiplexer circuit adapted to receive signals comprises two filter circuits. The first filter circuit presents a high impedance to signals outside a first frequency range and the second circuit presents a high impedance to signals outside a second frequency range. Isolation matching circuits enable transmission and reception of one of the signals in the first or second frequency ranges without degradation or interference with the other range. An embodiment allows transmission and reception of satellite Orbcomm frequencies over a standard AM/FM antenna without effect on the AM/FM signal.
摘要翻译： 适于接收信号的多路复用器电路包括两个滤波器电路。 第一滤波器电路对第一频率范围之外的信号呈现高阻抗，并且第二电路对第二频率范围之外的信号呈现高阻抗。 隔离匹配电路能够在第一或第二频率范围内发送和接收信号中的一个信号，而不会降低或与其他范围的干扰。 实施例允许在标准AM / FM天线上发射和接收卫星Orbcomm频率，而不影响AM / FM信号。
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公开(公告)号：US6107972A
公开(公告)日：2000-08-22
申请号：US929142
申请日：1997-09-10
申请人： Glen J. Seward , Paul E. Miller
发明人： Glen J. Seward , Paul E. Miller
摘要： An AM/FM/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. There is no direct electrical connection between the antenna wire and the tube, and the capacitance between these elements is essentially only stray capacitance. Two antennas, each comprising two frequency self-resonant circuits, are connected by means of a multiplexing circuit to AM/FM, CB and cellular telephone apparatus.
摘要翻译： AM / FM / CB /蜂窝式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频率的四分之一波长 在FM频率范围内，第二频率自谐振电路设置在第一频率自谐振电路之下。 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。 天线和管之间没有直接的电连接，这些元件之间的电容基本上只是杂散电容。 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，CB和蜂窝电话设备。
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公开(公告)号：US5734352A
公开(公告)日：1998-03-31
申请号：US615607
申请日：1996-03-13
申请人： Glen J. Seward , Paul E. Miller
发明人： Glen J. Seward , Paul E. Miller
摘要： An AM/FM/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. There is no direct electrical connection between the antenna wire and the tube, and the capacitance between these elements is essentially only stray capacitance. Two antennas, each comprising two frequency self-resonant circuits, are connected by means of a multiplexing circuit to AM/FM, CB and cellular telephone apparatus.
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