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1. 发明申请

WO2011101305A1 DOWN-CONVERSION USING SQUARE WAVE LOCAL OSCILLATOR SIGNALS 审中-公开
标题翻译：使用平方波的下变频器本地振荡器信号
公开(公告)号：WO2011101305A1
公开(公告)日：2011-08-25
申请号：PCT/EP2011/052106
申请日：2011-02-14
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , ANDERSSON, Stefan , TILLMAN, Fredrik , ECKERBERT, Daniel , DIN, Imad Ud
发明人： ANDERSSON, Stefan , TILLMAN, Fredrik , ECKERBERT, Daniel , DIN, Imad Ud
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 ¼ 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振幅，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p / 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。

2. 发明申请

WO2010034834A1 TECHNIQUE FOR SUPPRESSING NOISE IN A TRANSMITTER DEVICE 审中-公开
标题翻译：用于在发射器装置中抑制噪声的技术
公开(公告)号：WO2010034834A1
公开(公告)日：2010-04-01
申请号：PCT/EP2009/062534
申请日：2009-09-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KOZMIN, Kirill , TILLMAN, Fredrik , ANDERSSON, Stefan
发明人： KOZMIN, Kirill , TILLMAN, Fredrik , ANDERSSON, Stefan
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：提供了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）包括在基带频率下操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放大器330旁边耦合的反馈回路（333,336）中执行的步骤，以便在放大器（330）的下游点击RF信号处理级，以获得包括基带信号的放大RF信号将抽头的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。

3. 发明申请

WO2009130207A2 PASSIVE MIXER AND FOUR-PHASE CLOCKING METHOD AND APPARATUS 审中-公开
标题翻译：被动混合器和四相时钟方法和装置
公开(公告)号：WO2009130207A2
公开(公告)日：2009-10-29
申请号：PCT/EP2009/054723
申请日：2009-04-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MU, Fenghao , TILLMAN, Fredrik
发明人： MU, Fenghao , TILLMAN, Fredrik
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/163 , H03D7/165 , H03D2200/0043 , H03D2200/0084 , H03D2200/0088 , H03D2200/009
摘要： According to one embodiment, a radio frequency receiver includes a quadrature mixer for converting radio frequency signals to baseband signals or intermediate frequency signals. The quadrature mixer includes an in-phase passive mixer and a quadrature-phase passive mixer. Each passive mixer includes a mixer core having a plurality of mixer input switch transistors and a plurality of output switch transistors connected to the mixer input switch transistors. Clock circuitry generates a first set of clock signals and a second set of clock signals. The first set of clock signals has a frequency twice that of the second set of clock signals. The first set of clock signals is arranged to drive the mixer input switch transistors and the second set of clock signals is arranged to drive the output switch transistors.
摘要翻译：根据一个实施例，射频接收机包括用于将射频信号转换成基带信号或中频信号的正交混频器。正交混频器包括同相无源混频器和正交相位无源混频器。每个无源混频器包括具有多个混频器输入开关晶体管的混频器核心和连接到混频器输入开关晶体管的多个输出开关晶体管。时钟电路产生第一组时钟信号和第二组时钟信号。第一组时钟信号的频率是第二组时钟信号的两倍。第一组时钟信号被布置成驱动混频器输入开关晶体管，并且第二组时钟信号被布置成驱动输出开关晶体管。

4. 发明申请

WO2004088835A1 PASSIVE MIXER 审中-公开
标题翻译：被动搅拌机
公开(公告)号：WO2004088835A1
公开(公告)日：2004-10-14
申请号：PCT/EP2004/002654
申请日：2004-03-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , SJÖLAND, Henrik , TILLMAN, Fredrik
发明人： SJÖLAND, Henrik , TILLMAN, Fredrik
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）信号转换成中间频率（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信号混频的压控混频装置（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。

5. 发明申请

WO2010118983A1 OFDMA SCHEDULING METHOD FOR AVOIDING LEAKAGE AT THE MOBILE STATIONS 审中-公开
标题翻译： OFDMA调度方法，用于在移动台上避免泄漏
公开(公告)号：WO2010118983A1
公开(公告)日：2010-10-21
申请号：PCT/EP2010/054638
申请日：2010-04-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , TILLMAN, Fredrik , LINDOFF, Bengt , BERGLJUNG, Christian
发明人： TILLMAN, Fredrik , LINDOFF, Bengt , BERGLJUNG, Christian
IPC分类号： H04W72/08
CPC分类号： H04W72/085 , H04W88/08 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262
摘要： The present invention relates to scheduling of uplink and downlink recources between mobile terminals (110, 120) and a base station (130). To reduce the power leakage between the transmitter and the receiver of the mobile terminal (110), the scheduler allocates uplink frequency carriers and downlink frequency carriers with a large duplex distance to those mobile terminals (110, 120) that have to transmit with hight power. This means that the requirements on the external SAW filter could be reduced.
摘要翻译：本发明涉及移动终端（110,120）和基站（130）之间的上行链路和下行链路资源的调度。为了减少移动终端（110）的发射机和接收机之间的功率泄漏，调度器向那些必须以高功率发射的移动终端（110,120）分配具有大的双工距离的上行链路频率载波和下行链路频率载波。这意味着可以减少对外部SAW滤波器的要求。

6. 发明申请

WO2009130209A3 PASSIVE MIXER AND FOUR-PHASE CLOCKING METHOD AND APPARATUS 审中-公开
公开(公告)号：WO2009130209A3
公开(公告)日：2009-10-29
申请号：PCT/EP2009/054725
申请日：2009-04-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MU, Fenghao , TILLMAN, Fredrik
发明人： MU, Fenghao , TILLMAN, Fredrik
IPC分类号： H03D7/14 , H03D7/16
摘要： According to one embodiment, a radio frequency receiver comprises a quadrature mixer configured to convert radio frequency signals to baseband signals or intermediate frequency signals. The quadrature mixer comprises an in-phase passive mixer and a quadrature-phase passive mixer. Each passive mixer comprises a mixer core having a plurality of mixer input switch transistors and a plurality of output switch transistors connected to the mixer input switch transistors. Clock circuitry generates a plurality of quadrature pulsed clock signals and delayed versions of the quadrature pulsed clock signals. The quadrature pulsed clock signals and the delayed versions of the quadrature pulsed clock signals drive the mixer input switch transistors and the output switch transistors.

7. 发明申请

WO2011110504A1 RADIO WHITE SPACE SENSING 审中-公开
标题翻译：无线电白色空间感应
公开(公告)号：WO2011110504A1
公开(公告)日：2011-09-15
申请号：PCT/EP2011/053323
申请日：2011-03-04
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , ROSENQVIST, Anders , SUNDSTRÖM, Lars , TILLMAN, Fredrik
发明人： ROSENQVIST, Anders , SUNDSTRÖM, Lars , TILLMAN, Fredrik
IPC分类号： H04W16/14
CPC分类号： H04W16/14 , H04W24/10
摘要： User equipment comprising a receiver obtains information about a set of channels to be sensed in a sensing process, wherein each channel is associated with a respective one of a number of radio frequencies. The receiver obtains a radio frequency signal by simultaneously sensing two or more of the channels included in the set of channels. A total power level of the sensed two or more channels is measured, and a comparison result is generated by comparing the total power level of the sensed two or more channels with a predetermined power level. The user equipment is controlled based on the comparison result. For example, if the total power level is below a threshold, then the sensed channels can be considered to not be in use by external transmission equipment.
摘要翻译：包括接收器的用户设备在感测过程中获得关于要感测的一组信道的信息，其中每个信道与多个无线电频率中的相应一个相关联。接收机通过同时感测包括在该组信道中的两个或多个信道来获得射频信号。测量感测的两个或更多个通道的总功率电平，并且通过将感测的两个或更多个通道的总功率电平与预定功率电平进行比较来生成比较结果。基于比较结果控制用户设备。例如，如果总功率水平低于阈值，则感测到的通道可被认为不被外部传输设备使用。

8. 发明申请

WO2010037608A1 RE-CONFIGURABLE PASSIVE MIXER FOR WIRELESS RECEIVERS 审中-公开
标题翻译：无线接收器的可重配置无源混频器
公开(公告)号：WO2010037608A1
公开(公告)日：2010-04-08
申请号：PCT/EP2009/061199
申请日：2009-08-31
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , TILLMAN, Fredrik , MU, Fenghao
发明人： TILLMAN, Fredrik , MU, Fenghao
IPC分类号： H03D7/14
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/165 , H03D2200/0023 , H03D2200/0043 , H03D2200/0084 , H03D2200/0088
摘要： A configurable passive mixer is described herein. According to one exemplary embodiment, the passive mixer comprises a clock generator, a controller, and a plurality of passive mixer cores connected in parallel. The clock generator comprises a local oscillator drive unit for each passive mixer core. The controller varies an effective transistor size of the passive mixer by separately configuringeachof the passive mixercoresto enable/disable each passive mixer core. For example, the controller may selectively enable one or more of the passive mixer cores to vary the effective transistor width of the passive mixer. As the performance requirements and/or the operatingcommunication standard change, the controller may re-configure eachpassive mixer core.
摘要翻译：这里描述了可配置的无源混频器。根据一个示例性实施例，无源混频器包括时钟发生器，控制器和并联连接的多个无源混频器核心。时钟发生器包括用于每个无源混频器核心的本地振荡器驱动单元。控制器通过单独配置无源混频器启用/禁用每个无源混频器内核来改变无源混频器的有效晶体管尺寸。例如，控制器可以选择性地使一个或多个无源混频器内核改变无源混频器的有效晶体管宽度。随着性能要求和/或操作通信标准的变化，控制器可以重新配置每个无源混频器核心。

9. 发明申请

WO2012171930A1 METHOD AND RADIO RECEIVER ENABLING HARMONIC DISTORTION ESTIMATION 审中-公开
标题翻译：方法和无线电接收器启用谐波失真估计
公开(公告)号：WO2012171930A1
公开(公告)日：2012-12-20
申请号：PCT/EP2012/061146
申请日：2012-06-13
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , LINDOFF, Bengt , TILLMAN, Fredrik
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 a level of harmonic receiver distortions by: determining whether a fraction of the total received signal power and a theoretical noise floor is below or above a first threshold; or determining whether a remaining part of the total received signal power, said remaining part not including said fraction, is above or below a second threshold. 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单元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; 在所述操作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; 以及通过以下步骤来估计谐波接收机失真的水平：确定总接收信号功率的一小部分和理论噪声基底是否低于或高于第一阈值; 或者确定总接收信号功率的剩余部分是否不包括所述分数的所述剩余部分高于或低于第二阈值。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。

10. 发明公开

EP2281339A2 PASSIVE MIXER AND FOUR-PHASE CLOCKING METHOD AND APPARATUS 审中-公开
标题翻译：无源混频器和四相时钟方法及装置
公开(公告)号：EP2281339A2
公开(公告)日：2011-02-09
申请号：EP09734164.8
申请日：2009-04-21
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： MU, Fenghao , TILLMAN, Fredrik
IPC分类号： H03D7/14 , H03D7/16
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/163 , H03D7/165 , H03D2200/0043 , H03D2200/0084 , H03D2200/0088 , H03D2200/009
摘要： According to one embodiment, a radio frequency receiver includes a quadrature mixer for converting radio frequency signals to baseband signals or intermediate frequency signals. The quadrature mixer includes an in-phase passive mixer and a quadrature-phase passive mixer. Each passive mixer includes a mixer core having a plurality of mixer input switch transistors and a plurality of output switch transistors connected to the mixer input switch transistors. Clock circuitry generates a first set of clock signals and a second set of clock signals. The first set of clock signals has a frequency twice that of the second set of clock signals. The first set of clock signals is arranged to drive the mixer input switch transistors and the second set of clock signals is arranged to drive the output switch transistors.
摘要翻译：根据一个实施例，射频接收器包括用于将射频信号转换为基带信号或中频信号的正交混频器。正交混频器包括一个同相无源混频器和一个正交相无源混频器。每个无源混频器包括具有多个混频器输入开关晶体管的混频器核心以及连接到混频器输入开关晶体管的多个输出开关晶体管。时钟电路产生第一组时钟信号和第二组时钟信号。第一组时钟信号的频率是第二组时钟信号的两倍。第一组时钟信号被设置为驱动混频器输入开关晶体管，并且第二组时钟信号被设置为驱动输出开关晶体管。

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