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

EP2169837B1 Technique for suppressing noise in a transmitter device 失效
标题翻译：一种用于在发送设备的降噪方法
公开(公告)号：EP2169837B1
公开(公告)日：2013-01-30
申请号：EP08017151.5
申请日：2008-09-29
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Andersson, Stefan , Kozmin, Kirill , Tillman, Fredrik
IPC分类号： H04B1/04 , H04B1/52
CPC分类号： H04B1/0475 , H04B1/525

2. 发明公开

EP2360835A1 Down-conversion using square wave local oscillator signals 有权
标题翻译： Abwärtswandlungmithilfe Rechteckwellen-Empfangsoszillatorsignalen
公开(公告)号：EP2360835A1
公开(公告)日：2011-08-24
申请号：EP10154072.2
申请日：2010-02-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： Andersson, Stefan , Tillman, Fredrik , Din, Imad ud , Eckerbert, Daniel
IPC分类号： H03D7/16 , H03D7/18
CPC分类号： H03D7/165 , H03D7/18 , H03D2200/0086
摘要： In a method of frequency down-converting an input signal to an output signal, a first local oscillator signal is generated as a square wave having a duty cycle of 1/3 or 2/3, and the input signal is mixed with the first oscillator signal to achieve a first down-converted signal, A second local oscillator signal is generated as a modified square wave having the same period time and a duty cycle of 2/3, of which one part has a positive amplitude and another part has a negative amplitude. The input signal is mixed with the second oscillator signal to achieve a second down-converted signal. The first oscillator signal has a delay of 1/4 of the period time to achieve a phase shift of π/2 between the oscillator signals, and at least one down-converted signal is multiplied by a pre-calculated factor. The resulting down-converted signals are added to achieve the output signal.
摘要翻译：在将输入信号下变频为输出信号的方法中，产生第一本地振荡器信号作为占空比为1/3或2/3的方波，并且输入信号与第一振荡器信号以实现第一下变频信号，第二本地振荡器信号被生成为具有相同周期时间和2/3的占空比的修改的方波，其中一个部分具有正幅度，另一部分具有负的振幅。输入信号与第二振荡器信号混合以实现第二下变频信号。第一振荡器信号具有周期时间的1/4的延迟，以实现振荡器信号之间的±/ 2的相移，并且至少一个下变频信号乘以预先计算的因子。所产生的下变频信号被加入以实现输出信号。

3. 发明公开

EP2536031A1 Method and radio receiver enabling harmonic distortion detection 审中-公开
标题翻译： Verfahren undFunkempfängermit harmonischer Verzerrungserkennung
公开(公告)号：EP2536031A1
公开(公告)日：2012-12-19
申请号：EP11170049.8
申请日：2011-06-15
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Lindoff, Bengt , Tillman, Fredrik
IPC分类号： H04B1/10 , H04B1/16 , H04W52/02
CPC分类号： H04W24/08 , H04B1/1036 , H04B1/109 , H04B17/29 , H04B17/345 , H04W52/0229 , H04W52/0238 , Y02D70/1222 , Y02D70/1262 , Y02D70/40
摘要： A method of estimation of harmonic distortion level for a radio receiver operative in a cellular communication system enabled to receive signals from transmitters of one or more cells is disclosed. The method comprises measuring, within a bandwidth of operation, a total received signal power; measuring, within the bandwidth of operation, a received signal power of signals received from the one or more cells, respectively; and estimating, based on the measured total received signal power and the measured received signal power of signals received from the one or more cells, a level of harmonic receiver distortions. A such radio receiver, and a computer program for implementing the method are also disclosed.
摘要翻译：公开了一种用于在能够从一个或多个小区的发射机接收信号的蜂窝通信系统中操作的无线电接收机的谐波失真电平的估计方法。该方法包括在操作的带宽内测量总接收信号功率; 在操作的带宽内分别测量从所述一个或多个小区接收的信号的接收信号功率; 并且基于测量的总接收信号功率和从一个或多个小区接收的信号的测量的接收信号功率来估计谐波接收机失真的水平。还公开了一种这样的无线电接收机和用于实现该方法的计算机程序。

4. 发明授权

EP2360835B1 Down-conversion using square wave local oscillator signals 有权
标题翻译：下变频用的方波的本地振荡器信号
公开(公告)号：EP2360835B1
公开(公告)日：2012-12-05
申请号：EP10154072.2
申请日：2010-02-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： Andersson, Stefan , Tillman, Fredrik , Din, Imad ud , Eckerbert, Daniel
IPC分类号： H03D7/16 , H03D7/18
CPC分类号： H03D7/165 , H03D7/18 , H03D2200/0086
摘要： In a method of frequency down-converting an input signal to an output signal, a first local oscillator signal is generated as a square wave having a duty cycle of 1/3 or 2/3, and the input signal is mixed with the first oscillator signal to achieve a first down-converted signal, A second local oscillator signal is generated as a modified square wave having the same period time and a duty cycle of 2/3, of which one part has a positive amplitude and another part has a negative amplitude. The input signal is mixed with the second oscillator signal to achieve a second down-converted signal. The first oscillator signal has a delay of 1/4 of the period time to achieve a phase shift of À/2 between the oscillator signals, and at least one down-converted signal is multiplied by a pre-calculated factor. The resulting down-converted signals are added to achieve the output signal.

5. 发明授权

EP1542356B1 Mixer arrangement 有权
标题翻译：混音设备
公开(公告)号：EP1542356B1
公开(公告)日：2008-04-02
申请号：EP03028350.1
申请日：2003-12-10
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： Sjöland, Hendrik , Tillman, Fredrik
IPC分类号： H03D7/14
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D2200/0047 , H03D2200/0084

6. 发明公开

EP1542356A1 Mixer arrangement 有权
标题翻译： Mischervorrichtung
公开(公告)号：EP1542356A1
公开(公告)日：2005-06-15
申请号：EP03028350.1
申请日：2003-12-10
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Sjöland, Hendrik , Tillman, Fredrik
IPC分类号： H03D7/14
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D2200/0047 , H03D2200/0084
摘要： A quadrature connected passive mixer arrangement for frequency converting analog signals from a first to a second frequency. The arrangement comprises two parallel connected mixers provided as transistors. First and second LO signals and their inverse signals having separated phases are provided for driving the transistors. Signal path switches are provided between the RF terminals and the mixer transistors. The switches are driven by signals having a different phase than the signal driving the corresponding mixer transistor. Thus, any short circuit between IF terminals of the arrangement may be eliminated.
摘要翻译：一种正交连接的无源混频器装置，用于将模拟信号从第一频率转换到第二频率。该装置包括作为晶体管提供的两个并联连接的混频器。第一和第二LO信号及其具有分离相位的反相信号被提供用于驱动晶体管。信号路径开关设置在RF端子和混频器晶体管之间。开关由具有与驱动相应的混频器晶体管的信号不同的相位的信号驱动。因此，可以消除该装置的IF端子之间的任何短路。

7. 发明公开

EP2169837A1 Technique for suppressing noise in a transmitter device 失效
标题翻译：在einerÜbertragungsvorrichtung的Verfahren zurGeräuschunterdrückung
公开(公告)号：EP2169837A1
公开(公告)日：2010-03-31
申请号：EP08017151.5
申请日：2008-09-29
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Andersson, Stefan , Kozmin, Kirill , Tillman, Fredrik
IPC分类号： H04B1/04 , H04B1/52
CPC分类号： H04B1/0475 , H04B1/525
摘要： A technique of suppressing noise in a transmitter device (300) is provided, wherein the transmitter device (300) comprises a baseband signal processing stage (301) operating at baseband frequency and comprising a modulator (316, 320) for converting a baseband signal into an RF signal, and an RF signal processing stage (301) operating at RF and comprising an amplifier (330). A method implementation of this technique comprises the steps performed in a feedback loop (333, 336) coupled around the amplifier (330) of tapping the RF signal processing stage downstream of the amplifier (330) to obtain an amplified RF signal comprising a baseband signal component and a noise component, downconverting the tapped RF signal to baseband frequency, removing the baseband signal component from the downconverted signal, upconverting the resulting signals still comprising the noise component to RF frequency and feeding the upconverted signal back to the RF signal processing stage upstream of the amplifier (330) thereby suppressing the noise component.
摘要翻译：提供一种抑制发射机设备（300）中的噪声的技术，其中发射机设备（300）包括以基带频率工作的基带信号处理级（301），并且包括用于将基带信号转换成 RF信号和RF信号处理级（301），其在RF处工作并且包括放大器（330）。该技术的方法实现包括在反馈环路（333,336）中执行的步骤，该反馈环路（333,336）耦合在放大器（330）周围，对放大器（330）下游的RF信号处理级进行抽头以获得包括基带信号分量和噪声分量，将抽头的RF信号下变频到基带频率，从下变频信号中去除基带信号分量，将仍然包含噪声分量的结果信号上变频到RF频率，并将上变频信号反馈到RF信号处理级上游的放大器（330），从而抑制噪声分量。

8. 发明公开

EP1465334A1 Passive Mixer 有权
标题翻译：塞浦路斯米歇尔
公开(公告)号：EP1465334A1
公开(公告)日：2004-10-06
申请号：EP03007555.0
申请日：2003-04-01
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Tillman, Fredrik , Sjöland, Henrik
IPC分类号： H03D7/14
CPC分类号： H03D7/125
摘要： A passive mixer (100) for converting a radio frequency (RF) signal to an intermediary frequency (IF) signal or vice versa. The mixer comprises a voltage controlled mixing means (110) for mixing a local oscillator signal with either an RF or IF signal. A bootstrapping technique is used for feeding back a low frequency component of the IF signal through a low-pass filter (160) to the mixing means. The mixing means (110) will follow low frequency variations of the IF signal, which will improve the linearity of the mixer.
摘要翻译：一种用于将射频（RF）信号转换为中间频率（IF）信号的无源混频器（100），反之亦然。混频器包括用于将本地振荡器信号与RF或IF信号混频的电压控制混频装置（110）。自举技术用于通过低通滤波器（160）将IF信号的低频分量反馈到混频装置。混合装置（110）将遵循IF信号的低频变化，这将提高混频器的线性度。

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