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

US06205341B1 Process for adjusting the transmission and reception chains of the paths by a base station of a system for radio communication between mobiles 失效
标题翻译：用于由移动台之间的无线电通信的系统的基站调整路径的发送和接收链的过程
公开(公告)号：US06205341B1
公开(公告)日：2001-03-20
申请号：US08973758
申请日：1997-12-23
申请人： Jean-Jacques Monot , Robert Berranger , Gilbert Multedo
发明人： Jean-Jacques Monot , Robert Berranger , Gilbert Multedo
IPC分类号： H04B138
CPC分类号： H04B7/04 , H04B17/11 , H04B17/21
摘要： A process which adjusts the transmission and reception chains of the paths formed by a base station of a system for radio communication between mobiles which after calibration of the antenna base adjusts the reception chains relating to each path by distributing a first specified adjustment signal synchronously over each of the reception chains and calculating an equalization filter which inverts the transfer functions related to each reception chain. The process next adjusts the transmission chains related to each path by distributing a second specified adjustment signal synchronously over each of the transmission chains, by extracting from each of the paths a part of a transmission signal before the transmission signal is sent to the antenna base so as to re-inject that part of the transmission signal into the reception chains, and by calculating an equalization filter which inverts the transfer functions related to each transmission chain. Finally, the process receives via the equalization filters previously calculated for the reception chains reception signals originating from the antenna base, or transmits via the equalization filters previously calculated for the transmission chains the transmission signals originating from the multipath transmission/reception device.
摘要翻译：调整由用于移动台之间的无线电通信的系统的基站形成的路径的发送和接收链的过程，其在天线基准校准之后通过在每个路径上同步地分配第一指定的调整信号来调整与每个路径相关的接收链并计算均衡滤波器，该均衡滤波器反转与每个接收链相关的传递函数。该过程接下来通过在每个发送链上同步地分配第二指定调整信号，通过在发送信号被发送到天线基底之前从发送信号的一部分中提取每个路径来调整与每个路径相关的发送链，从而将发送信号的该部分重新注入到接收链中，并且通过计算反转与每个传输链相关的传递函数的均衡滤波器。最后，该处理经由先前针对从天线基站发送的接收链接收信号计算的均衡滤波器接收，或者经由先前为传输链路计算的均衡滤波器发送来自多径发送/接收装置的发送信号。

2. 发明授权

US06326929B1 Method and device for the measurement of antenna impedance 失效
标题翻译：用于测量天线阻抗的方法和装置
公开(公告)号：US06326929B1
公开(公告)日：2001-12-04
申请号：US09643991
申请日：2000-08-23
申请人： Robert Berranger
发明人： Robert Berranger
IPC分类号： G01R2702
CPC分类号： G01R29/10 , G01R27/04
摘要： The device comprises a current/voltage transformer (1) coupled by its primary winding between a matching device (2) of an antenna (3) and the output of an amplifier (4) for the supply or the antenna (3), a first (5a) and a second (5b) baseband digital frequency transposition device respectively coupled to the output of the amplifier (4) and to the secondary winding of the transformer (1), and a computation device (7) to compute the impedance of the antenna (3) from signals given by the first frequency transposition device (5a) and the second frequency transposition device (5b).
摘要翻译：该装置包括通过其初级绕组在天线（3）的匹配装置（2）和用于电源或天线（3）的放大器（4）的输出端之间耦合的电流/电压变压器（1），第一（5a）和分别耦合到放大器（4）的输出端和变压器（1）的次级绕组的第二（5b）基带数字频率转置装置，以及计算装置（7）天线（3）由第一频率转置装置（5a）和第二频率转置装置（5b）给出的信号。

3. 发明授权

US06307492B1 Device to compensate for the non-linearity of an analog/digital converter 失效
标题翻译：用于补偿模拟/数字转换器的非线性的装置
公开(公告)号：US06307492B1
公开(公告)日：2001-10-23
申请号：US09576441
申请日：2000-05-22
申请人： Robert Berranger , Jean-Luc de Gouy
发明人： Robert Berranger , Jean-Luc de Gouy
IPC分类号： H03M120
CPC分类号： H03M1/0641 , H03M1/12
摘要： The method consists of the adding of a dither signal of constant amplitude, frequency-modulated by noise, to the signal applied to the input of the converter. An automatic control link is set up between the level of the added interference signal and the signal applied to the input of the converter so that the level of the input signal added to the level of the added interference signal is equal to the level of the full scale signal of the converter. Application to digital communications radio receivers.
摘要翻译：该方法包括将由噪声进行频率调制的恒定幅度抖动信号添加到施加到转换器输入端的信号。在添加的干扰信号的电平和施加到转换器的输入的信号的电平之间建立自动控制链路，使得添加到相加干扰信号的电平的输入信号的电平等于满量程的电平转换器的标度信号。应用于数字通信无线电接收机。

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