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1. 发明申请

US20050146476A1 Vehicle mounted satellite antenna system with in-motion tracking using beam forming 有权
标题翻译：车载卫星天线系统，具有使用波束形成的运动跟踪
公开(公告)号：US20050146476A1
公开(公告)日：2005-07-07
申请号：US10752794
申请日：2004-01-07
申请人： James Wang , Chau Yang , Franklin Liu , Youren Chen , Wenzhang Wang
发明人： James Wang , Chau Yang , Franklin Liu , Youren Chen , Wenzhang Wang
IPC分类号： G01S3/14 , G01S3/40 , G01S3/42 , H01Q1/32 , H01Q3/04 , H01Q13/10 , H01Q21/00
CPC分类号： G01S3/40 , G01S3/14 , G01S3/42 , H01Q1/3275 , H01Q3/04 , H01Q21/005
摘要： The present invention relates to a vehicle mountable satellite antenna as defined in the claims which is operable while the vehicle is in motion. The satellite antenna of the present invention can be installed on top of (or embedded into) the roof of a vehicle. The antenna is capable of providing high gain and a narrow antenna beam for aiming at a satellite direction and enabling broadband communication to vehicle. The present invention provides a vehicle mounted satellite antenna which has low axial ratio, high efficiency and has low grating lobes gain. The vehicle mounted satellite antenna of the present invention provides two simultaneous polarization states. In one embodiment, a hybrid mechanic and electronic steering approach provides a more reasonable cost and performance trade-off. The antenna aiming in the elevation direction is achieved via control of an electronic beamforming network. The antenna is mounted on a rotatable platform under mechanical steering and motion control for aiming the antenna in the azimuth direction. Such approach significantly reduces the complexity and increases the reliability of the mechanical design. The antenna height is compatible to the two-dimensional electronic steering phased-array antenna. Additionally, the number of the electronic processing elements required is considerably reduced from that of the conventional two-dimensional electronic steering phased-array antenna, thereby allowing for low cost and large volume commercial production. The present invention provides electronically generated left, right, up, and down beams for focusing the antenna beam toward the satellite while the vehicle is moving. All of the beams are simultaneously available for use in the motion beam tracking. This provides much faster response and less signal degradation.
摘要翻译：本发明涉及一种如权利要求书所限定的可车载卫星天线，其可在车辆运动时操作。本发明的卫星天线可以安装在车辆顶部（或嵌入）车顶。天线能够提供高增益和窄天线波束，用于瞄准卫星方向并实现与车辆的宽带通信。本发明提供一种具有低轴比，高效率并且具有低的光栅增益的车载卫星天线。本发明的车载卫星天线提供两个同时的偏振状态。在一个实施例中，混合机械和电子转向方法提供了更合理的成本和性能权衡。通过电子波束成形网络的控制来实现朝向高度方向的天线。天线安装在机械转向和运动控制下的可旋转平台上，用于将天线瞄准方位角方向。这种方法显着降低了机械设计的复杂性并增加了其可靠性。天线高度与二维电子转向相控阵天线兼容。此外，所需的电子处理元件的数量比传统的二维电子转向相控阵天线的数量大大减少，从而允许低成本和大量的商业生产。本发明提供电子产生的左，右，上，下光束，用于在车辆移动时将天线光束朝向卫星聚焦。所有光束同时可用于运动光束跟踪。这提供了更快的响应和更少的信号衰减。

2. 发明申请

US20060135097A1 Wireless communication system using a plurality of antenna elements with adaptive weighting and combining techniques 失效
标题翻译：使用具有自适应加权和组合技术的多个天线元件的无线通信系统
公开(公告)号：US20060135097A1
公开(公告)日：2006-06-22
申请号：US10732003
申请日：2003-12-10
申请人： James Wang , Jack Winters , Meng Doong , Chau Yang
发明人： James Wang , Jack Winters , Meng Doong , Chau Yang
IPC分类号： H04B7/08 , H04B1/06
CPC分类号： H04B7/086 , H04B7/0857 , H04B7/10 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/442 , Y02D70/444
摘要： The present invention provides a method and system for operating a wireless communication system in which received signals from a plurality of antennas are weighted and combined with a beam forming operation to form an output signal. The beam forming operation determines weights adjusted to increase a desired signal power in the output signal while reducing the power in the output signal of out-of-band components. In an embodiment of the present invention, beam forming operations are performed with maximal ratio combining (MRC). Alternatively, a constant modulus algorithm (CMA) can be used for beam forming operations. In an alternate embodiment, improved interference suppression is performed with a novel algorithm referred to as an interference nulling algorithm (INA). The INA receives an error signal which is 180° out of phase with a combination of the channels for individual antennas, referred to as the SUM channel. The error signal is determined by complex conjugate multiplication of the individual signals and a reference complex signal. It is desirable to simultaneously achieve diversity and combining gain and suppress the adjacent channel by combining the weight generation for MRC and that for INA, as described above, to generate antenna weights similar to those of MMSE combining.
摘要翻译：本发明提供了一种用于操作无线通信系统的方法和系统，其中来自多个天线的接收信号被加权并与波束形成操作组合以形成输出信号。波束形成操作确定了为减小输出信号中的带外分量的功率而在输出信号中增加所需信号功率而调整的权重。在本发明的实施例中，以最大比组合（MRC）进行波束形成操作。或者，恒模算法（CMA）可用于波束形成操作。在替代实施例中，使用被称为干扰归零算法（INA）的新颖算法来执行改进的干扰抑制。 INA接收与被称为SUM信道的各个天线的信道的组合相差180°的误差信号。误差信号由各个信号和参考复信号的复共轭乘法确定。期望同时实现分集和组合增益并通过组合用于MRC的权重生成和针对INA的权重生成来抑制相邻信道，如上所述，以生成与MMSE组合类似的天线权重。

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