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公开(公告)号：US06236844B1
公开(公告)日：2001-05-22
申请号：US09103131
申请日：1998-06-23
IPC分类号： H04Q720
CPC分类号： H04B7/0857 , H04H40/18 , H04H60/11
摘要： A proportional diversity radio system for mobile vehicles combats both short time delay multipath and long time delay multipath by mixing separate tuner signals obtained using separate space diversity antennas. The relative contribution of each tuner signal to a final mixed tuner output is determined in direct relation to their respective signal strength signals and inverse relation to their respective long time delay multipath noise signals.
摘要翻译： 用于移动车辆的比例分集无线电系统通过混合使用单独的空间分集天线获得的单独调谐器信号来同时进行短时间延迟多径和长时间延迟多径。 每个调谐器信号对最终混合调谐器输出的相对贡献是与它们各自的信号强度信号直接相关并且与它们各自的长时延多径噪声信号成反比关系来确定的。
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公开(公告)号：US6141536A
公开(公告)日：2000-10-31
申请号：US102587
申请日：1998-06-23
CPC分类号： H04H20/22 , H04B7/0871 , H04B7/0825 , H04H2201/13 , H04H2201/60 , H04H40/72
摘要： An RDS receiver having dual tuners and dual antennas operates in two distinct modes, a diversity mode and a non-diversity mode. Diversity mode is when both tuners are tuned to a signal with the same program audio content and the audio from both tuners is blended together in a manner to minimize the effects of multipath distortion. In non-diversity mode, a forcing circuit isolates the tuner output signals so that one tuner provides the audio output while the other can be retuned to any other frequency for purposes of gathering RDS data.
摘要翻译： 具有双调谐器和双天线的RDS接收机以两种不同的模式操作，分集模式和非分集模式。 分集模式是当两个调谐器被调谐到具有相同节目音频内容的信号，并且来自两个调谐器的音频被混合在一起以最小化多径失真的影响的方式时。 在非分集模式下，强制电路隔离调谐器输出信号，以便一个调谐器提供音频输出，而另一个调谐器可以重新调谐到任何其他频率以收集RDS数据。
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