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1.
公开(公告)号:US20020083458A1
公开(公告)日:2002-06-27
申请号:US10020703
申请日:2001-11-30
发明人: John G. N. Henderson , Carl Scarpa
IPC分类号: H04N007/20 , H01Q003/22 , H01Q003/24 , H01Q003/26 , H01Q003/00 , H04B001/38 , H04M001/00 , H01Q013/00 , H01Q007/08 , H01Q007/04
CPC分类号: H01Q1/007 , H01Q1/24 , H01Q3/2611 , H01Q7/005
摘要: Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
摘要翻译: 描述了具有可导向天线方向图和使用这种天线的技术的天线。 根据本发明,使用具有一个或多个NULL的天线方向图。 通过使用数字控制信号,导航天线方向图,使得诸如多路径信号的信号干扰源将位于空值中。 以这种方式,可以使接收信号的S / N比最大化,从而便于解调。 本发明的技术可以应用于电视,计算机设备,移动设备以及各种其它系统。 用于控制天线的数字命令可以包括多个信息字段,例如方向字段,信道字段,增益字段和极性字段。 无法支持指定字段的天线无视不支持的字段中的信息。 每个支持的字段中的信息被解码并用于调整相应的天线特性。