公开(公告)号：WO2009130207A3

公开(公告)日：2010-06-10

申请号：PCT/EP2009054723

申请日：2009-04-21

Applicant: ERICSSON TELEFON AB L M ,  MU FENGHAO ,  TILLMAN FREDRIK

Inventor： MU FENGHAO ,  TILLMAN FREDRIK

IPC: H03D7/14 ,  H03D7/16

CPC classification number: H03D7/166 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/163 ,  H03D7/165 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/0088 ,  H03D2200/009

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2010115723A3

公开(公告)日：2010-12-09

申请号：PCT/EP2010053910

申请日：2010-03-25

Applicant: ERICSSON TELEFON AB L M ,  MU FENGHAO

Inventor： MU FENGHAO

IPC: H03J1/00 ,  H03J3/20

CPC classification number: H03J3/20 ,  H03J2200/10 ,  H04B1/18

Abstract: A tuning method and circuit for an LC tank resonant circuit, including an inductor and a variable capacitor, are described. In a tuning mode, an RF input signal is applied to an input port of the circuit, and the RF output signal is monitored as a variable capacitor control input is varied. A peak output is detected, and the corresponding variable capacitor control input is stored, and applied to the variable capacitor in an operating mode. In one embodiment, the variable capacitor control input is adjusted for delay in the peak detection process. In one embodiment, the variable capacitor comprises a coarse capacitor and a fine capacitor; the tuning procedure is repeated for each capacitor; and both coarse and fine variable capacitor control inputs are stored and applied to the respective capacitors in operating mode.

Abstract translation: 描述了包括电感器和可变电容器的LC谐振电路的调谐方法和电路。 在调谐模式中，将RF输入信号施加到电路的输入端口，并且随着可变电容器控制输入变化而监视RF输出信号。 检测到峰值输出，并且存储相应的可变电容器控制输入，并且在工作模式下将其施加到可变电容器。 在一个实施例中，可变电容器控制输入被调整用于峰值检测过程中的延迟。 在一个实施例中，可变电容器包括粗电容器和精细电容器; 对每个电容器重复调谐过程; 并且粗略和精细的可变电容器控制输入被存储并且在操作模式下被施加到相应的电容器。

公开(公告)号：WO2010127963A3

公开(公告)日：2011-03-24

申请号：PCT/EP2010055611

申请日：2010-04-27

Applicant: ERICSSON TELEFON AB L M ,  MU FENGHAO ,  ANDERSSON STEFAN

Inventor： MU FENGHAO ,  ANDERSSON STEFAN

IPC: H04B7/26

CPC classification number: H04B7/15521

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2011015534A3

公开(公告)日：2011-04-21

申请号：PCT/EP2010061137

申请日：2010-07-30

Applicant: ERICSSON TELEFON AB L M ,  MU FENGHAO

Inventor： MU FENGHAO

IPC: H03D7/14 ,  H03D7/16

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D7/165 ,  H03D7/166 ,  H03D2200/0025 ,  H03D2200/0084 ,  H03D2200/009

Abstract: A differential positive coefficient weighted quadrature modulator is actuated responsive to quadrature clock signals and positive digital modulation signals input to the modulator. The modulator includes an l-channel positive coefficient weighted modulator (PCWM) and a Q-channel PCWM. The l-channel PCWM has differential output nodes configured to output a differential l-channel signal responsive to the state of first and second positive digital modulation signals and first and second complimentary quadrature clock signals input to the l-channel PCWM. The Q-channel PCWM has differential output nodes configured to output a differential Q-channel signal responsive to the state of third and fourth positive digital modulation signals and third and fourth complimentary quadrature clock signals input to the Q-channel PCWM. The positive digital modulation signals input to the l-channel and Q-channel PCWMs have positive amplitude and the l-channel and Q-channel PCWMs conduct at approximately half clock cycle or less of the corresponding quadrature clock signals.

Abstract translation: 响应输入到调制器的正交时钟信号和正数字调制信号，启动差分正系数加权正交调制器。 该调制器包括一个I通道正系数加权调制器（PCWM）和一个Q通道PCWM。 I信道PCWM具有差分输出节点，其被配置为响应于输入到I信道PCWM的第一和第二正数字调制信号以及第一和第二互补正交时钟信号的状态而输出差分I信道信号。 Q信道PCWM具有被配置为响应于输入到Q信道PCWM的第三和第四正数字调制信号以及第三和第四互补正交时钟信号的状态而输出差分Q信道信号的差分输出节点。 输入到I通道和Q通道PCWM的正数字调制信号具有正幅度，并且I通道和Q通道PCWM在大约半个时钟周期或更少的相应正交时钟信号上导通。

公开(公告)号：WO2009130209A2

公开(公告)日：2009-10-29

申请号：PCT/EP2009054725

申请日：2009-04-21

Applicant: ERICSSON TELEFON AB L M ,  MU FENGHAO ,  TILLMAN FREDRIK

Inventor： MU FENGHAO ,  TILLMAN FREDRIK

IPC: H03D7/16

CPC classification number: H03D7/163 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/165 ,  H03D7/166 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/0088 ,  H03D2200/009

Abstract: 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.

Abstract translation: 根据一个实施例，射频接收机包括被配置为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。 时钟电路产生多个正交脉冲时钟信号和正交脉冲时钟信号的延迟版本。 正交脉冲时钟信号和正交脉冲时钟信号的延迟版本驱动混频器输入开关晶体管和输出开关晶体管。

公开(公告)号：WO2013095263A3

公开(公告)日：2013-11-07

申请号：PCT/SE2012051345

申请日：2012-12-05

Applicant: ERICSSON TELEFON AB L M

Inventor： MU FENGHAO ,  LINDOFF BENGT

IPC: H04B1/04 ,  H03F1/02 ,  H03F1/32

CPC classification number: H04L27/0008 ,  H03F1/02 ,  H03F1/0211 ,  H03F1/0222 ,  H03F1/0227 ,  H03F1/3282 ,  H03F3/19 ,  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

Abstract: 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.

Abstract translation: 公开了一种包括功率放大器，相位调制器，开关DC-DC转换器，全部以双模式操作的发射器以及控制器。 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以最小的成本增加硬件来节省功率。 发射机适用于在不同的分配带宽下工作，适用于不同的无线电标准，同时保持控制器所规定的最低功耗。 还公开了收发器，通信设备，方法和计算机程序。