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    • 11. 发明授权
    • Low profile dipole antenna for use in wireless communications systems
    • 用于无线通信系统的低调偶极天线
    • US06369771B1
    • 2002-04-09
    • US09773377
    • 2001-01-31
    • Bing ChiangKenneth M. GaineyGriffin K. GothardChristopher A. Snyder
    • Bing ChiangKenneth M. GaineyGriffin K. GothardChristopher A. Snyder
    • H01Q928
    • H01Q9/40H01Q1/242H01Q9/28
    • A dipole antenna for use with a mobile subscriber unit in a wireless network communications system. The antenna is fabricated with printed circuit board (PCB) photo-etching techniques for precise control of the printed structure. The dipole antenna includes a planar substrate made of dielectric material. A conductive planar element is layered on one side of the substrate in an upper region of the substrate, and a conductive planar ground patch is layered on the other side of the substrate in a lower region of the substrate. That is, the conductive planar element is stacked above the conductive planar ground patch. A feed strip is connected to the bottom of the conductive planar element, and extends from the element to a bottom edge of the substrate and terminates at a bottom feed point. Typically, the feed point is connected to a transmission line for transmitting signals to and receiving signals from the dipole antenna. The conductive planar ground patch includes a bottom end for connecting the ground patch to a ground plane upon which the dipole antenna is mounted. The ground plane is aligned orthonormal to the antenna. Capacitive coupling between the conductive planar element and the conductive ground patch creates a junction which provides an upper dipole feed point in a mid-region of the substrate such that the conductive planar element acts as one element of an unbalanced dipole antenna and the conductive planar ground patch acts as the other element of the unbalanced dipole antenna. The unbalanced dipole antenna forms a beam which may be positionally directed along a horizon that is substantially parallel to the ground plane.
    • 一种与无线网络通信系统中的移动用户单元一起使用的偶极天线。 天线采用印刷电路板(PCB)光蚀刻技术制造,用于精确控制印刷结构。 偶极天线包括由介电材料制成的平面基板。 导电平面元件在基板的上部区域的一侧上层叠,并且在基板的下部区域中的基板的另一侧上层叠导电性平面接地片。 也就是说,导电平面元件堆叠在导电平面接地片上方。 馈电条连接到导电平面元件的底部,并且从元件延伸到衬底的底部边缘并终止于底部馈电点。 通常,馈电点连接到用于向偶极天线发送信号并从其接收信号的传输线。 导电平面接地片包括用于将接地片连接到安装偶极天线的接地平面的底端。 接地平面与天线对准正交。 导电平面元件和导电接地片之间的电容耦合产生一个结,其在衬底的中间区域中提供上偶极馈电点,使得导电平面元件充当不平衡偶极天线和导电平面接地的一个元件 补片作为非平衡偶极子天线的另一个元件。 不平衡偶极子天线形成可以沿着基本上平行于接地平面的水平线定位的光束。
    • 12. 发明授权
    • Adaptive antenna for use in wireless communication systems
    • 用于无线通信系统的自适应天线
    • US06515635B2
    • 2003-02-04
    • US09846693
    • 2001-05-01
    • Bing ChiangJames A. Proctor, Jr.Griffin K. GothardKenneth M. GaineyJoe T. Richeson
    • Bing ChiangJames A. Proctor, Jr.Griffin K. GothardKenneth M. GaineyJoe T. Richeson
    • H01Q1910
    • H01Q3/242H01Q19/32H01Q21/205
    • A directive antenna includes plural antenna elements in an antenna assemblage. A feed network connected to the antenna elements includes at least one switch to select a state of one of the antenna elements to be in an active state in response to a control signal. The other antenna elements are in a passive state, electrically coupled to an impedance to be in a reflective mode. The antenna elements in the passive state are electromagnetically coupled to the active antenna element, allowing the antenna assemblage to directionally transmit and receive signals. The directive antenna may further include an assisting switch associated with each antenna element to assist coupling the antenna elements, while in the passive state, to the respective impedances. The antenna assemblage may be circular for a 360° discrete scan in N directions, where N is the number of antenna elements. The directive antenna is suitable for use in a high data rate network having greater than 50 kbits per second data transfer rates, where the high data rate network may use CDMA2000, 1eV-DO, 1Extreme, or other such protocol.
    • 指示天线包括天线组合中的多个天线元件。 连接到天线元件的馈电网络包括至少一个开关,用于响应于控制信号选择一个天线元件处于活动状态的状态。 其他天线元件处于被动状态,电耦合到处于反射模式的阻抗。 处于被动状态的天线元件与有源天线元件电磁耦合,允许天线组件定向发射和接收信号。 指示天线还可以包括与每个天线元件相关联的辅助开关,以帮助天线元件在被动状态下耦合到相应的阻抗。 天线组合可以是N个方向上的360°离散扫描的圆形,其中N是天线元件的数量。 指令天线适用于高数据速率网络,每秒数据传输速率大于50kbits,高数据速率网络可能使用CDMA2000,1eV-DO,1Extreme或其他此类协议。
    • 15. 发明授权
    • Directional antenna
    • 定向天线
    • US06762722B2
    • 2004-07-13
    • US10282955
    • 2002-10-28
    • Bing ChiangWilliam R. PalmerGriffin K. GothardChristopher A. Snyder
    • Bing ChiangWilliam R. PalmerGriffin K. GothardChristopher A. Snyder
    • H01Q138
    • H01Q9/28H01Q1/08H01Q1/241H01Q3/446H01Q3/46H01Q9/285H01Q9/38H01Q19/28H01Q19/30H01Q19/32H01Q21/062H01Q21/205
    • A directional antenna having a number, N, of outlying monopole antenna elements. These monopole elements are formed as a first upper conductive segment on a portion of a dielectric substrate. The array also includes the same number, N, of image elements. The image elements are formed as a second set of lower conductive segments on the same substrate as the upper conductive segments. The image elements, generally having the same length and shape as the monopole elements, are connected to a ground reference potential. To complete the array, an active antenna element is also disposed on the same substrate, adjacent to at least one of the monopole elements. In a preferred arrangement, the passive monopole elements and corresponding image elements are selectively connected to operate to in either a reflective or directive mode, such as via a switchable coupling circuit that selectively changes the impedances connected between them.
    • 具有N个外围单极天线元件的定向天线。 这些单极元件形成为介电基片的一部分上的第一上导电段。 该阵列还包括相同数量的N个图像元素。 图像元件形成为与上导电段相同的衬底上的第二组下导电段。 通常具有与单极元件相同的长度和形状的图像元件连接到接地参考电位。 为了完成阵列,有源天线元件也设置在与至少一个单极元件相邻的同一衬底上。 在优选的布置中,无源单极子元件和对应的图像元件被选择性地连接以在反射或指向模式中操作,诸如经由可选择的耦合电路,其选择性地改变它们之间连接的阻抗。