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1. 发明申请

WO2012074460A1 IMBALANCE DETECTION AND REDUCTION FOR WIDEBAND BALUN 审中-公开
标题翻译：不平衡检测和减少宽带巴伦
公开(公告)号：WO2012074460A1
公开(公告)日：2012-06-07
申请号：PCT/SE2011/051423
申请日：2011-11-24
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MU, Fenghao
发明人： MU, Fenghao
IPC分类号： H03H7/42 , H04B1/18 , H01F21/12
CPC分类号： H03H7/42 , H03H7/0153 , H03H7/06 , H03H7/1775 , H03H2250/00
摘要： A circuit converts a single-ended signal to differential signals that are balanced to have the same amplitudes and opposite phases. The circuit includes a balance tunable balun, a detector, and a controller. The balance tunable balun has a primary winding, a secondary winding, a control input, and a switched resistor-capacitor (RC) network. The primary winding receives the single-ended signal and the secondary winding outputs the differential signals. The control input receives a control signal and the switched RC network tunes an output imbalance of the balun responsive to this control signal. The detector detects the output imbalance and the controller generates the control signal to control the switched RC network to reduce that output imbalance. The circuit produces well balanced differential signals over a wide range of signal frequencies,even when asymmetries, process variations, or parasitic capacitance in the balun would otherwise result in imbalance.
摘要翻译：电路将单端信号转换为平衡的具有相同幅度和相位相位的差分信号。电路包括平衡可调平衡 - 不平衡转换器，检测器和控制器。平衡可调平衡不平衡转换器具有初级绕组，次级绕组，控制输入和开关电阻 - 电容（RC）网络。初级绕组接收单端信号，次级绕组输出差分信号。控制输入接收控制信号，并且交换的RC网络响应于该控制信号来调谐平衡 - 不平衡变换器的输出不平衡。检测器检测输出不平衡，并且控制器产生控制信号以控制切换的RC网络，以减少输出不平衡。即使在不平衡变压器中的非对称性，工艺变化或寄生电容导致不平衡的情况下，该电路也可在宽范围的信号频率上产生良好平衡的差分信号。

2. 发明申请

WO2011054727A1 DIGITAL AFFINE TRANSFORMATION MODULATED POWER AMPLIFIER FOR WIRELESS COMMUNICATIONS 审中-公开
标题翻译：数字自适应变换调制功率放大器，用于无线通信
公开(公告)号：WO2011054727A1
公开(公告)日：2011-05-12
申请号：PCT/EP2010/066365
申请日：2010-10-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MATTISSON, Sven , MU, Fenghao
发明人： MATTISSON, Sven , MU, Fenghao
IPC分类号： H03F3/24 , H03F3/195 , H04L27/36 , H03F3/21 , H03C5/00 , H04L27/20
CPC分类号： H03F3/24 , H03F3/195 , H03F3/211 , H03F2200/336
摘要： A digital affine transformation modulator and power amplifier drives a transmitter antenna. The modulator performs an affine transformation on a signal, wherein the I, Q space is mapped to a plurality of sectors. A signal in a sector is expressed as the sum of two vectors, the angles of which define the sector boundaries. A digital power amplifier comprises a plurality of amplifier cells, each cell comprising at least two amplifier units. For a given signal, each amplifier unit selectively amplifies a clock signal having a phase corresponding to one of the boundary angles of the signal's affine transformed sector. A subset of the plurality of amplifier cells receiving each phase clock signal are enabled, based on the magnitude of the associated vector describing the signal in affine transform space. The modulation scheme exhibits higher efficiency than quadrature modulation, without the bandwidth expansion and group delay mismatch of polar modulation.
摘要翻译：数字仿射变换调制器和功率放大器驱动发射机天线。调制器对信号执行仿射变换，其中I，Q空间映射到多个扇区。扇区中的信号被表示为两个矢量的和，它们的角度限定了扇区边界。数字功率放大器包括多个放大器单元，每个单元包括至少两个放大器单元。对于给定信号，每个放大器单元选择性地放大具有对应于信号仿射变换扇区的一个边界角的相位的时钟信号。基于描述仿射变换空间中的信号的相关矢量的大小，启用接收每个相位时钟信号的多个放大器单元的子集。调制方案表现出比正交调制更高的效率，没有频带扩展和极化调制的群延迟失配。

3. 发明申请

WO2010127963A2 A METHOD AND APPARATUS FOR MIMO REPEATER CHAINS IN A WIRELESS COMMUNICATION NETWORK 审中-公开
标题翻译：一种无线通信网络中MIMO复用链的方法与装置
公开(公告)号：WO2010127963A2
公开(公告)日：2010-11-11
申请号：PCT/EP2010/055611
申请日：2010-04-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MU, Fenghao , ANDERSSON, Stefan
发明人： MU, Fenghao , ANDERSSON, Stefan
IPC分类号： H04B7/26
CPC分类号： H04B7/15521
摘要： In one or more embodiments taught herein, a multi-band MIMO repeater is configured to translate normal wireless mobile bands into other frequency bands in the physical layer. An advantageous, multi-hop repeater chain includes two or more such repeaters, for propagating downlink signals from a base station, and for propagating uplink signals to the base station. Each such repeater may use paralleled homodyne structure transceivers for better SNR, spectrum combiners for uplink signal aggregation, spectrum separators for downlink signal de-aggregation, water mark signal inserters for optimization, and, among other things, spectrum analyzers for frequency band selection. In at least one such embodiment, a multi-hop repeater chain is configured for MIMO operation in an LTE Advanced or other MIMO network, to deliver high data rate over larger distances — e.g., further away from cell base stations.
摘要翻译：在本文教导的一个或多个实施例中，多频带MIMO中继器被配置为将正常的无线移动频带转换成物理层中的其他频带。有利的多跳中继链包括两个或更多个这样的中继器，用于从基站传播下行链路信号，以及用于将上行链路信号传播到基站。每个这样的中继器可以使用并行的零差结构收发器来获得更好的SNR，用于上行链路信号聚合的频谱组合器，用于下行链路信号去聚合的频谱分离器，用于优化的水印信号插入器，以及用于频带选择的频谱分析器。在至少一个这样的实施例中，多跳中继链被配置用于LTE高级或其他MIMO网络中的MIMO操作，以在更远的距离（例如远离蜂窝基站）提供高数据速率。

4. 发明申请

WO2014128158A1 DISTRIBUTED POWER AMPLIFIER CIRCUIT 审中-公开
标题翻译：分布式功率放大器电路
公开(公告)号：WO2014128158A1
公开(公告)日：2014-08-28
申请号：PCT/EP2014/053223
申请日：2014-02-19
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： MU, Fenghao
IPC分类号： H03F3/21 , H03F3/24 , H03F1/02 , H03F3/195 , H03F3/72 , H03F1/18
CPC分类号： H03F1/0288 , H03F1/0277 , H03F1/18 , H03F3/195 , H03F3/211 , H03F3/213 , H03F3/245 , H03F3/72 , H03F2200/451 , H03F2200/516 , H03F2200/537 , H03F2200/541 , H03F2203/21145 , H03F2203/7221 , H04L27/2614 , H04W52/0206 , H04W52/0261 , Y02D70/1262 , Y02D70/142
摘要： A distributed power amplifier circuit comprises an amplifier arrangement (100) comprising a plurality of sub amplifiers (110.1 - 110_ N ), each having an output port (120_1 - 120_ N ) for outputting an output signal of the sub-amplifier (110_1 - 110_ N ) and an output combiner network (200) for combining the output signals from the sub amplifiers (110_1 - 110_ N ). The output combiner network (200) comprises, for each sub amplifier (110 _ i ), an associated auto transformer (210_ i ) operatively connected to the output port (120_ i ) of the sub amplifier (110_ i ) for receiving the output signal of the sub amplifier (110_ i ). The auto transformers (210_1 - 210_ N ) each have a first interconnection terminal (240_1 - 240_ N ) and a second interconnection terminal (230_1 - 230 - N ). The auto transformers (210_1 - 210_ N ) are operatively connected in series via said interconnection terminals (230_1 - 230_ N ; 240_1 - 240_ N ).
摘要翻译：一种分布式功率放大器电路包括一个包括多个子放大器（110.1-110_N）的放大器装置（100），每个子放大器具有用于输出子放大器（110_1-110_N）的输出信号的输出端口（120_1-120_N）和输出组合器网络（200），用于组合来自子放大器（110_1-110_N）的输出信号。输出组合器网络（200）对于每个子放大器（110i）包括可操作地连接到子放大器（110_i）的输出端口（120_i）的相关联的自动变压器（210_i），用于接收子放大器（110_i）。自动变压器（210_1〜210_N）各自具有第一互连端子（240_1〜240_N）和第二互连端子（230_1〜230-N）。自动变压器（210_1-210_N）通过所述互连端子（230_1-230_N; 240_1-240_N）可操作地串联连接。

5. 发明申请

WO2013095263A2 SELECTIVE POWER AMPLIFIER 审中-公开
标题翻译：选择功率放大器
公开(公告)号：WO2013095263A2
公开(公告)日：2013-06-27
申请号：PCT/SE2012/051345
申请日：2012-12-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： MU, Fenghao , LINDOFF, Bengt
IPC分类号： H04L27/36
CPC分类号： H04L27/0008 , H03F1/02 , H03F1/0211 , H03F1/0222 , H03F1/0227 , H03F1/3282 , H03F3/19 , H03F3/217 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/336 , H03F2200/451 , H03F2201/3212 , H04B1/04 , H04B1/406 , H04B2001/045 , H04J11/00 , H04L1/203 , H04L27/362 , H04L43/16 , H04L45/745 , H04W52/0209 , H04W52/52 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/0453 , H04W72/0473 , H04W88/12 , Y02D70/1222 , Y02D70/1262 , Y02D70/40
摘要： A transmitter comprising a power amplifier, a phase modulator, a switched DC-DC converter, all operating in dual mode, and a controller is disclosed. The power amplifier is arranged to selectively operate either in a first mode or in a second mode, wherein the first mode is a linear mode and the second mode is a non-linear mode in order to save power with least increasing cost in hardware. The transmitter is adapted to operate at different allocated bandwidths, for different radio standards while keeping minimum power consumption governed by the controller. A transceiver, a communication device, a method and a computer program are also disclosed.
摘要翻译：一种发射机，包括功率放大器，相位调制器，全双工工作的开关式DC-DC转换器，以及控制器。功率放大器被布置成选择性地以第一模式或第二模式操作，其中第一模式是线性模式，并且第二模式是非线性模式，以便在硬件中以最小的成本节省功率。发射机适用于在不同的无线电标准的不同分配带宽下工作，同时保持由控制器控制的最小功耗。还公开了收发器，通信设备，方法和计算机程序。

6. 发明申请

WO2013079389A1 TECHNIQUE FOR CROSSTALK REDUCTION 审中-公开
标题翻译：降低CROSSTALK的技术
公开(公告)号：WO2013079389A1
公开(公告)日：2013-06-06
申请号：PCT/EP2012/073331
申请日：2012-11-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： MU, Fenghao , SUNDSTRÖM, Lars
IPC分类号： H04B15/04 , H03L7/00
CPC分类号： H04L25/08 , H04B3/32 , H04B15/04
摘要： A technique for cancelling or reducing crosstalk signals between controlled oscillators in an integrated circuit is provided. The technique involves an arrangement adapted to reduce a crosstalk signal generated by a first controlled oscillator to a second oscillator both comprised in the integrated circuit, wherein both controlled oscillators are configured to output a respective clock signal. The arrangement comprises a detector adapted to detect the crosstalk signal generated by the first controlled oscillator to the second controlled oscillator, a crosstalk cancellation circuit adapted to generate a cancellation signal having an amplitude substantially the same as that of the crosstalk signal and a phase substantially opposite to that of the crosstalk signal, and a cancellation signal injector adapted to introduce the cancellation signal into the second controlled oscillator.
摘要翻译：提供了用于消除或减少集成电路中受控振荡器之间的串扰信号的技术。该技术涉及一种适于将由第一受控振荡器产生的串扰信号减小到集成电路中包括的第二振荡器的布置，其中两个受控振荡器被配置为输出相应的时钟信号。该装置包括检测器，适于检测由第一受控振荡器产生的串扰信号到第二受控振荡器;串扰消除电路，适于产生具有基本上与串扰信号幅度基本相同的幅度的消除信号，以及消除信号注入器，其适于将抵消信号引入到第二受控振荡器中。

7. 发明申请

WO2013012383A1 TRANSFORMER FILTER ARRANGEMENT 审中-公开
标题翻译：变压器滤波器布置
公开(公告)号：WO2013012383A1
公开(公告)日：2013-01-24
申请号：PCT/SE2012/050823
申请日：2012-07-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , ANDERSSON, Stefan , WERNEHAG, Johan , MU, Fenghao
发明人： ANDERSSON, Stefan , WERNEHAG, Johan , MU, Fenghao
IPC分类号： H03H7/42 , H01F27/29 , H03H7/09 , H05K1/16 , H01F27/34 , H04B1/10 , H04B1/12
CPC分类号： H01F29/02 , H01F27/2804 , H01F27/343 , H01F27/42 , H03H7/0115 , H03H7/09 , H03H7/38 , H03H7/42 , H03H7/427 , H03H2001/0078 , H03H2007/013
摘要： A transformer filter arrangement (30) for passing signals at a fundamental frequency and suppressing signals at one or more interfering frequencies is disclosed. It comprises a transformer (100) having a first winding (110) and a second winding (120), wherein the first winding (110) has a first end (112a) and a second end (122b) and the second winding (120) has a first end (122a) and a second end (122b). It further comprises one or more capacitors (130a-e). For each capacitor (130a-c) of a first set of at least one capacitor of the one or more capacitors (130a-e), the capacitor (130a-c) is connected between a pair of taps (a1, a2; b1, b2; c1, c2) of the first winding (110), wherein each tap (a1, a2, b1, b2, c1, c2) of the pair of taps (a1, a2; b1, b2; c1, c2) is located between the first end (112a) and the second end (112b) of the first winding (110), and the capacitor (130a-c), together with an inductive sub segment (140a-c) of the first winding (110), which is connected in parallel with the capacitor (130a-c) between the pair of taps (a1, a2; b1, b2; c1, c2), forms a parallel LC circuit which is tuned to resonate at one of said interfering frequencies for suppressing signals at said one of the interfering frequencies. A corresponding integrated circuit, a corresponding radio receiver circuit, a corresponding radio transmitter circuit, and a corresponding radio communication apparatus are also disclosed.
摘要翻译：公开了一种用于以基本频率传递信号并以一个或多个干扰频率抑制信号的变压器滤波器装置（30）。它包括具有第一绕组（110）和第二绕组（120）的变压器（100），其中第一绕组（110）具有第一端（112a）和第二端（122b）和第二绕组（120）具有第一端（122a）和第二端（122b）。它还包括一个或多个电容器（130a-e）。对于一个或多个电容器（130a-e）中的至少一个电容器的第一组的每个电容器（130a-c），电容器（130a-c）连接在一对抽头（a1，a2; b1，（a1，a2; b1，b2; c1，c2）的每个抽头（a1，a2，b1，b2，c1，c2）位于第一绕组（110）的b2; c1，c2）在第一绕组（110）的第一端（112a）和第二端（112b）之间，以及电容器（130a-c）与第一绕组（110）的感应子段（140a-c）其与所述一对抽头（a1，a2; b1，b2; c1，c2）之间的电容器（130a-c）并联连接，形成并联LC电路，其被调谐为以所述干扰频率之一谐振以抑制在所述一个干扰频率处的信号。还公开了相应的集成电路，相应的无线电接收器电路，相应的无线电发射机电路和相应的无线电通信装置。

8. 发明申请

WO2011015533A1 DIGITAL MODULATED RF POWER AMPLIFIER WITH IMPEDANCE COMPENSATION CIRCUIT 审中-公开
标题翻译：具有阻抗补偿电路的数字调制型射频功率放大器
公开(公告)号：WO2011015533A1
公开(公告)日：2011-02-10
申请号：PCT/EP2010/061134
申请日：2010-07-30
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , MU, Fenghao
发明人： MU, Fenghao
IPC分类号： H03F1/56 , H03F3/193 , H03F3/217
CPC分类号： H03F1/56 , H03F3/193 , H03F3/2175
摘要： A digital modulated power amplifier unit includes a differential radio frequency (RF) amplifier circuit having differential output nodes, a digital modulation signal input and complimentary clock signal inputs. The differential RF amplifier circuit includes a first pair of transistors operable to receive a digital modulation signal and a second pair of transistors operable to receive complimentary clock signals. The digital modulated power amplifier unit further includes an impedance compensation circuit connected between the differential output nodes of the differential RF amplifier circuit. The impedance compensation circuit includes a transistor connected in series between first and second RC circuits. The transistor is operable to electrically connect and disconnect the first RC circuit and the second RC circuit responsive to the digital modulation signal.
摘要翻译：数字调制功率放大器单元包括具有差分输出节点的差分射频（RF）放大器电路，数字调制信号输入和补充时钟信号输入。差分RF放大器电路包括可操作以接收数字调制信号的第一对晶体管和可操作以接收互补时钟信号的第二对晶体管。数字调制功率放大器单元还包括连接在差分RF放大器电路的差分输出节点之间的阻抗补偿电路。阻抗补偿电路包括串联连接在第一和第二RC电路之间的晶体管。晶体管可操作以响应于数字调制信号电连接和断开第一RC电路和第二RC电路。

9. 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。

10. 发明申请

WO2015144233A1 A BEAM FORMING RECEIVER 审中-公开
标题翻译：波束形成接收器
公开(公告)号：WO2015144233A1
公开(公告)日：2015-10-01
申请号：PCT/EP2014/056231
申请日：2014-03-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： MU, Fenghao , SUNDSTRÖM, Lars
IPC分类号： H04B7/08
CPC分类号： H04B7/0837
摘要： A beam forming receiver comprises a plurality of front end circuits (4, 5, 6, 7, 8) receiving RF signals from array antennas (2, 22) and down-converting them to analog baseband signals. A receiving section comprises a first beam former (11, 12, 13) that controls phase and amplitude of each analog baseband signal individually to obtain analog phase shifted signals and combines them to a combined analog baseband signal. A beam tracking section comprises analog-to-digital converters (35, 36) to convert the analog baseband signals to digital baseband signals, and a second beam former. The second beam former phase shifts and combines the digital baseband signals to a combined digital baseband signal; and the searching and tracking section can further determine from this signal a signal indicative of a beam direction and provide it as a control signal to the first beam former.
摘要翻译：波束形成接收器包括从阵列天线（2,22）接收RF信号并将其下变频为模拟基带信号的多个前端电路（4,5,6,7,8）。接收部分包括分别控制每个模拟基带信号的相位和幅度以获得模拟相移信号并将它们组合到组合的模拟基带信号的第一波束形成器（11,12,13）。光束跟踪部分包括用于将模拟基带信号转换为数字基带信号的模数转换器（35,36）和第二波束形成器。第二个波束形成器相移并组合数字基带信号到组合的数字基带信号; 并且搜索和跟踪部分可以从该信号进一步确定指示波束方向的信号，并将其提供给第一波束形成器的控制信号。

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