A low-noise block downconverter (LNB) is the receiving device mounted on satellite dishes used for satellite TV reception, which collects the radio waves from the dish and converts them to a signal which is sent through a cable to the receiver inside the building.

2017年7月24日 · LNB（Low Noise Block down-converter），低噪声下变频器。 悬架于“锅”表面上方。 用于接收锅面反射的卫星信号。 其功能是将由馈源传送的卫星信号经过放大和下变频，把Ku或C波段信号频谱搬移到L波段。 然后经同轴电缆传送给卫星信号接收机（如DVBS机顶盒，电视等）。 因卫星讯号在抵达天线（锅）前已相当微弱及同轴电缆传输的频率越高讯号损耗越大，所以才需要LNB来做改善（低噪放大）。 LNB的工作流程，先将卫星高频讯号放大至数十万倍， …

2017年7月24日 · LNB（Low Noise Block down-converter），低噪声下变频器。 悬架于“锅”表面上方。 用于接收锅面反射的卫星信号。 其功能是将由馈源传送的卫星信号经过放大和下变频，把Ku或C波段信号频谱搬移到L波段。 然后经同轴电缆传送给卫星信号接收机（如DVBS 机顶盒，电视等）。 因卫星讯号在抵达天线u000f. 文章浏览阅读2.1k次，点赞2次，收藏13次。 本文详细介绍了LNB（低噪声下变频器）在数字电视系统中的作用，包括其放大和下变频卫星信号的功能， …

2017年11月23日 · lnb带宽相对较宽，如果前面没有滤波器一些干扰信号进来的话就直接饱和了，这个和 接收机动态范围 有关系。 lnb的增益比较高，卫星信号很弱的。 但其它干扰信号可不弱，一个稍微大点信号放大80db，放大器肯定挂了。 用波导主要是损耗小，对信噪比影响小。 带外抑制也比较陡峭. 常用的lnb，应该本身就是带通的吧，lnb前面加滤波器，能提高信噪比吗？

2006年3月31日 · 意法半导体(STMicroelectronics)日前推出能简化数字卫星电视的低噪音区块(LNB)控制的升压转换器LNBH21，用在机顶盒和集成数字电视。 LNBH21包括有升压电压转换器，输入电压在8V到15V之间，从而简化了系统设计。

LNB (Low Noise Block Down Converter) A device mounted on the dish, designed to amplify the satellite signals and convert them from a high frequency to a lower frequency. LNBs can be controlled to receive signals with different polarisation.

2016年3月14日 · Testing has shown the LNB will break lock with levels below -39 dBm and as high as -33 dBm output. The IV test fails output power in the -40 dBm and less range. The SNR test looks to be a much higher priority. The paradigm shift here for an LNB is: SNR; LO offset; output level; Where previously it was: output power; LO offset; SNR

This evaluation board implements a DC-DC converter based on the LNBH25S device. It is used to power LNBs inside dish antennas to receive satellite TV signals. The LNBH25S is an integrated solution for supplying / interfacing satellite LNB modules in …

The Gardiner C-Band TI and 5G Filter LNBF is a high-quality low-loss broadband filter that is a great way to stop any interference and protect your wireless connection. This filter can be used with a wireless router or a cordless phone.

DIMMA - A Distributed Interactive Multi-Media Architecture - is an open distributed processing (ODP) platform that facilitates the production of distributed applications. It has particular support for those applications that have soft real-time constraints, and those that make use of multi-media.