公开(公告)号：US20170012650A1

公开(公告)日：2017-01-12

申请号：US15270065

申请日：2016-09-20

申请人： THE DIRECTV GROUP, INC.

发明人： Kushan Shah ,  BENJAMIN MUI

IPC分类号： H04B1/00 ,  H04L7/033

CPC分类号： H04B1/006 ,  H04B1/0071 ,  H04H20/63 ,  H04H40/90 ,  H04L7/033 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/26

摘要： This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to frequency drift due to varying temperature and/or humidity conditions. Correcting for the frequency drift may provide an opportunity to remove or filter excess bandwidth. Further embodiments may include receiving, in a tuning request, information about a transponder type. A frequency translation module may be adjusted based, at least in part, on the transponder type related to the IF signal being input into the frequency translation module. Such frequency-shifting and transponder-specific filtering may allow Single-Wire Multiswitch (SWM) devices to provide output signals with narrower bandwidth, which may improve signal quality, cable run length, reduce power demands, etc.

摘要翻译： 本公开涉及与卫星信息广播相关的设备和方法。 示例性实施例可以包括从微波频带向中频（IF）信号进行下变频的移频。 例如，涉及本地振荡器的下变频可能会由于温度和/或湿度变化而导致频率漂移。 校正频率漂移可能会提供去除或过滤带宽的机会。 另外的实施例可以包括在调谐请求中接收关于应答器类型的信息。 可以至少部分地基于与输入到频率转换模块的IF信号相关的转发器类型来调整频率转换模块。 这种频移和转发器特定滤波可以允许单线多开关（SWM）器件提供具有较窄带宽的输出信号，这可以改善信号质量，电缆行程长度，降低功率需求等。