专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5604925A Super low noise multicoupler 失效
标题翻译：超低噪声多功能
公开(公告)号：US5604925A
公开(公告)日：1997-02-18
申请号：US430381
申请日：1995-04-28
申请人： John P. O'Malley , William J. Rinard , Rodney O. Williams
发明人： John P. O'Malley , William J. Rinard , Rodney O. Williams
IPC分类号： H01Q1/02 , H04B1/036 , H04B1/10 , H04B7/00
CPC分类号： H04B1/10 , H01Q1/02 , H04B1/036 , Y02B60/50
摘要： A method and multicoupler for a receiver at a base station in a cellular/PCS radio communication system includes a cooled container that is mounted on an antenna tower at the base station. The container is mounted on the antenna tower adjacent an antenna and contains thereinside a preselector filter, a highly linear amplifier, and a directional coupler that are cooled to a temperature less than 175.degree. K. and greater than 100.degree. K. A power splitter is connected between the output from the container and the radio system receiver, and is located at a ground station near the base of the antenna tower. Cooling the components inside the container, particularly the amplifier, to a temperature of about 150.degree. K. reduces the noise from the multicoupler so that base station range is extended, building penetration is improved, and subscriber transmit power may be reduced. The multicoupler may also be used for duplex channels, and in this event a transmit filter may also be cooled to reduce transmit power dissipation by the filter.
摘要翻译：在蜂窝/ PCS无线电通信系统中的基站处的接收机的方法和多重耦合器包括安装在基站的天线塔上的冷却容器。容器与天线相邻地安装在天线塔上，并包含预选滤波器，高线性放大器和定向耦合器，其被冷却到小于175°K且大于100°K。功率分配器是连接在容器的输出和无线电系统接收器之间，并且位于靠近天线塔底部的地面站。将容器内部，特别是放大器的部件冷却至约150°K的温度，从而降低了多重耦合器的噪音，从而延长了基站范围，提高了建筑物的穿透性，减少了用户发射功率。多重耦合器还可以用于双工通道，并且在这种情况下，发射滤波器也可以被冷却以减少滤波器的发射功率耗散。

2. 发明授权

US07098834B2 Multi-mode analog to digital converter 失效
标题翻译：多模式模数转换器
公开(公告)号：US07098834B2
公开(公告)日：2006-08-29
申请号：US10969283
申请日：2004-10-20
申请人： Lloyd F. Linder , Michael F. Clingempeel , William W. Cheng , William J. Rinard , Benjamin Felder
发明人： Lloyd F. Linder , Michael F. Clingempeel , William W. Cheng , William J. Rinard , Benjamin Felder
IPC分类号： H03M1/12 , H03M3/00 , H03M1/44
CPC分类号： H03M1/007 , H03M1/167
摘要： A multi-mode analog to, digital converter (ADC). The novel ADC includes an input terminal for receiving an analog input signal; a plurality of processing stages, each processing stage adapted to generate an output signal from an input to that processing stage; and a mechanism for determining a mode of operation and in accordance therewith connect the processing stages and the input terminal in a predetermined configuration. In an illustrative embodiment, the ADC can be configured as a subranging ADC, and the mechanism for determining, the mode of operation includes a signal processor for automatically selecting the mode of operation based on the frequency components of the input signal.
摘要翻译：多模式模数转换器（ADC）。该新型ADC包括用于接收模拟输入信号的输入端; 多个处理级，每个处理级适于从输入到该处理级产生输出信号; 以及用于确定操作模式并根据其以预定配置连接处理级和输入端的机构。在说明性实施例中，ADC可以被配置为子泛化ADC，并且用于确定操作模式的机制包括用于基于输入信号的频率分量自动选择操作模式的信号处理器。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式