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    • 71. 发明授权
    • Extended cavity fabry-perot laser assembly capable of high speed optical modulation with narrow mode spacing and WDM optical system including same
    • 具有狭窄模式间隔的高速光调制和包括其的WDM光学系统的扩展腔法布里 - 珀罗激光器组件
    • US09479280B2
    • 2016-10-25
    • US13543259
    • 2012-07-06
    • Jun ZhengStefan J. Murry
    • Jun ZhengStefan J. Murry
    • H04J14/02H04B10/50H04B10/572H01S5/14
    • H01S5/146H01S5/125H04B10/25H04B10/503H04B10/506H04B10/572H04J14/02H04J14/0246H04J14/025H04J14/0282
    • An extended cavity Fabry-Perot laser assembly provides relatively narrow mode spacing while allowing relatively high speed optical modulation. The extended cavity Fabry-Perot laser assembly generally includes an exit reflector physically separated from a laser emitter (e.g., a gain chip) to extend the lasing cavity and narrow the mode spacing while maintaining a relatively small gain region in the laser emitter capable of higher speed optical modulation. The extended cavity Fabry-Perot laser assembly may be used in a multi-channel transmitter in a wavelength division multiplexed (WDM) optical system that selects a channel wavelength for the transmitter from among multiple channel wavelengths emitted by the laser assembly. The narrow mode spacing may be less than a WDM channel width, and more specifically, may be less than a channel passband of an arrayed waveguide grating (AWG) or other filter used to select the channel wavelength.
    • 扩展腔法布里 - 珀罗激光器组件提供相对窄的模式间隔,同时允许相对高速的光学调制。 扩展腔法布里 - 珀罗激光器组件通常包括与激光发射器(例如,增益芯片)物理分离的出射反射器,以延伸激光腔并且缩小模式间隔,同时保持激光发射器中能够较高的相对小的增益区域 速度光调制。 扩展腔法布里 - 珀罗激光器组件可以用在波分复用(WDM)光学系统中的多通道发射机中,该系统从由激光组件发射的多个信道波长中选择用于发射机的信道波长。 窄模式间隔可以小于WDM沟道宽度,更具体地,可以小于用于选择沟道波长的阵列波导光栅(AWG)或其他滤波器的通道通带。
    • 72. 发明授权
    • Optically matched laser array coupling assembly for coupling laser array to arrayed waveguide grating
    • 光学匹配激光阵列耦合组件,用于将激光阵列耦合到阵列波导光栅
    • US09341774B2
    • 2016-05-17
    • US13357142
    • 2012-01-24
    • Jun ZhengI-Lung HoHung-Lun Chang
    • Jun ZhengI-Lung HoHung-Lun Chang
    • H04B10/00G02B6/34G02B6/12G02B6/42
    • G02B6/12019G02B6/4215
    • A laser array optical coupling assembly may be used to couple a laser array to an arrayed waveguide grating (AWG), for example, in an optical transmitter in a wavelength division multiplexed (WDM) optical communication system. The laser array optical coupling assembly may include an optical fiber tip array with polished optical fiber tips providing a reduced mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may also include a direct coupling of the laser array to the AWG with modified AWG inputs reducing the mode field diameter to improve coupling efficiency with the laser array. The laser array optical coupling assembly may be used, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON) or in other transmitters or transceivers in a WDM system capable of transmitting and receiving optical signals on multiple channel wavelengths.
    • 可以使用激光阵列光耦合组件将激光器阵列耦合到阵列波导光栅(AWG),例如在波分复用(WDM)光通信系统中的光发射机中。 激光阵列光耦合组件可以包括具有抛光光纤尖端的光纤尖端阵列,其提供减小的模场直径以提高与激光器阵列的耦合效率。 激光阵列光耦合组件还可以包括激光器阵列与AWG的直接耦合,其具有改进的AWG输入,降低模场直径以提高与激光器阵列的耦合效率。 激光阵列光耦合组件可用于例如WDM无源光网络(PON)中的光线路终端(OLT)或能够在多个信道上发射和接收光信号的WDM系统中的其他发射机或收发机 波长。
    • 73. 发明授权
    • Method and system for a double search user group selection scheme with range reduction in TDD multiuser MIMO downlink transmission
    • 用于TDD多用户MIMO下行链路传输的范围缩减的双重搜索用户组选择方案的方法和系统
    • US08934432B2
    • 2015-01-13
    • US13611957
    • 2012-09-12
    • Jun ZhengChengjin ZhangPieter van Rooyen
    • Jun ZhengChengjin ZhangPieter van Rooyen
    • H04W4/00H04J3/00H04B7/04
    • H04B7/0452H04B7/0408H04B7/0413H04L5/1469
    • Certain aspects of a method and system for processing signals in a communication system may include maximizing system capacity for a time division duplex (TDD) multiple-input multiple-output (MIMO) system, based on reducing a search range within which to find a group of signals having maximum channel gain. At least one of: a first signal for a first user and a second signal for a second user may be selected, which are both within the reduced search range, and which provides a maximum system capacity. The first signal for the first user may be selected from the reduced search range corresponding to a channel gain that is greater than a channel gain corresponding to a remaining portion of the reduced search range. The reduced search range may be generated by sorting a plurality of signals based on a channel gain corresponding to each of the plurality of signals.
    • 用于处理通信系统中的信号的方法和系统的某些方面可以包括:基于减少在其中寻找组的搜索范围来最大化时分双工(TDD)多输入多输出(MIMO)系统的系统容量 的信号具有最大的信道增益。 可以选择以下中的至少一个:可以选择第一用户的第一信号和第二用户的第二信号,这两者都在缩小的搜索范围内,并且提供最大的系统容量。 用于第一用户的第一信号可以从对应于比还原搜索范围的剩余部分对应的信道增益大的信道增益的缩小搜索范围中选择。 可以通过基于与多个信号中的每个信号相对应的信道增益对多个信号进行排序来生成缩小搜索范围。
    • 74. 发明授权
    • Switching power converter for reducing EMI from ring oscillation and its control method
    • 开关电源转换器,用于降低环形振荡的EMI及其控制方法
    • US08817497B2
    • 2014-08-26
    • US13131587
    • 2008-12-03
    • Jun ZhengEng Hwee QuekHuaming Guo
    • Jun ZhengEng Hwee QuekHuaming Guo
    • H02M3/335H02M1/44
    • H02M3/33507H02M1/44
    • A switching power converter (200, 300, 400, 500) comprises a transformer (211) with a parasitic capacitance (212), a first switch (207) coupled to the transformer (211) and configured to couple or decouple a load (219) to or from a power source via the transformer (211), a switch controller (205) coupled to the first switch (207) and configured to generate a switch drive signal (206) for turning on or off the first switch (207) according to switching cycles, and a bypass circuit configured to provide a bypass path for the parasitic elements such as the parasitic capacitance (212). The bypass circuit may be coupled in parallel with the auxiliary winding (220), the primary winding (213), or the secondary winding (214) of the transformer (211). High frequency ringing and EMI/RFI is reduced when the bypass circuit is enabled.
    • 开关功率转换器(200,300,400,500)包括具有寄生电容(212)的变压器(211),耦合到变压器(211)的第一开关(207)并且被配置为耦合或解耦负载(219 )连接到第一开关(207)并且被配置为产生用于接通或断开第一开关(207)的开关驱动信号(206)的开关控制器(205) 以及旁路电路,其被配置为为诸如寄生电容(212)的寄生元件提供旁路路径。 旁路电路可以与变压器(211)的辅助绕组(220),初级绕组(213)或次级绕组(214)并联耦合。 当旁路电路使能时,高频振铃和EMI / RFI降低。
    • 75. 发明申请
    • METHODS AND APPARATUSES FOR COMMUNICATION IN A PERSONAL AREA NETWORK
    • 个人网络通信的方法和设备
    • US20130271288A1
    • 2013-10-17
    • US13996059
    • 2010-12-20
    • Zheng LiangGang LiuJun ZhengHaibo WenFanxiang BinChunyan Yao
    • Zheng LiangGang LiuJun ZhengHaibo WenFanxiang BinChunyan Yao
    • H04W52/02
    • H04W52/0203H04W28/16H04W52/0216H04W52/0219H04W52/0229H04W52/0258H04W76/28H04W84/18Y02D70/144
    • Provided are methods and apparatuses for communication in a personal area network. A method comprises transmitting, to a personal area network coordinator, joint information of a sensor device, wherein the joint information is indicated by reserved bits and includes a type, an overall successful channel access rate, and a latest node buffer occupation rate of the sensor device; receiving, from the personal area network coordinator, information regarding adjusted active duration and duty cycle of the communication of the sensor device, wherein the adjustments of the active duration and duty cycle are determined based upon the joint information; and performing further communication based upon the adjusted active duration and duty cycle. A further method comprises receiving, from a sensor device, joint information which is indicated by reserved bits and includes a type, an overall successful channel access rate, and a latest node buffer occupation rate of the sensor device; adjusting, based upon the joint information, an active duration and a duty cycle of the communication of the sensor device; and transmitting information regarding the adjusted active duration and the duty cycle to the sensor device. With the present invention, multimedia services in low rate and low power wireless sensor networks are supported.
    • 提供了用于个人区域网络中的通信的方法和装置。 一种方法包括向个人区域网络协调器发送传感器设备的联合信息,其中联合信息由保留位指示,并且包括传感器的类型,总成功信道访问速率和最新节点缓冲器占用率 设备; 从所述个人区域网络协调器接收关于所述传感器设备的通信的调整的有效持续时间和占空比的信息,其中所述活动持续时间和占空比的调整基于所述联合信息来确定; 并且基于调整的有效持续时间和占空比执行进一步的通信。 另一种方法包括从传感器设备接收由保留位指示的联合信息,并且包括传感器设备的类型,整体成功的信道访问速率和最新的节点缓冲器占用率; 基于联合信息调整传感器装置的通信的有效持续时间和占空比; 以及将关于经调整的有效持续时间和占空比的信息发送到传感器装置。 利用本发明,支持低速率和低功率无线传感器网络中的多媒体业务。
    • 77. 发明申请
    • RF TRANSCEIVER WITH BEAMFORMING ANTENNA AND METHODS FOR USE THEREWITH
    • 射频收发器与波束形成天线及其使用方法
    • US20130109448A1
    • 2013-05-02
    • US13329302
    • 2011-12-18
    • David GarrettJun ZhengHamid Eslami
    • David GarrettJun ZhengHamid Eslami
    • H04W88/02
    • H04B7/0617H04B7/0623H04B7/0695
    • An RF transceiver includes a configuration controller that generates a control signal to select a first candidate radiation pattern for a beamforming antenna based on a first plurality of steering weights. An RF transceiver section broadcasts a first beacon transmission with the first candidate radiation pattern, and generates feedback signals to indicate if a first remote station has responded to the first beacon transmission. When the first remote station has responded to the first beacon transmission, the configuration controller stores the first plurality of steering weights used in association with the beacon transmission and generates control signals to the RF transceiver section to use the first candidate radiation pattern when communicating with the first remote station.
    • RF收发器包括配置控制器,其基于第一多个转向权重产生控制信号以选择用于波束成形天线的第一候选辐射图。 RF收发器部分利用第一候选辐射图广播第一信标传输,并且产生反馈信号以指示第一远程站是否响应于第一信标传输。 当第一远程站对第一信标传输作出响应时,配置控制器存储与信标传输相关联使用的第一多个转向权重,并且当与该收发器部分通信时产生控制信号到RF收发器部分以使用第一候选辐射模式 第一个远程站。
    • 79. 发明授权
    • Systems and methods for reducing clipping in multichannel modulated optical systems
    • 用于减少多通道调制光学系统中的限幅的系统和方法
    • US08358937B2
    • 2013-01-22
    • US11753162
    • 2007-05-24
    • Jun Zheng
    • Jun Zheng
    • H04B10/00H01S3/00
    • H04B10/504H04B10/25751H04B10/58
    • A system for reducing clipping may be used between a multichannel RF source and a laser to reduce or correct clipping that might occur in the laser as a result of negative spikes or peaks in a multichannel RF signal. The system generally includes a clipping correction circuit that receives the multichannel RF signal and responsive to the RF signal, prevents one or more of the negative peaks in the RF signal from causing clipping. The clipping correction circuit may either detect an envelope of the RF signal and/or may detect one or more peaks in the RF signal. One or more negative peaks may be prevented from causing clipping by adjusting a bias current provided by a bias control circuit and/or by modifying the RF signal with one or more clipping correction pulses coinciding with one or more negative peaks.
    • 可以在多通道RF源和激光器之间使用用于减少削波的系统,以减少或纠正由于多通道RF信号中的负尖峰或峰值而在激光器中可能发生的限幅。 系统通常包括限幅校正电路,其接收多声道RF信号并且响应于RF信号,防止RF信号中的一个或多个负峰值引起限幅。 限幅校正电路可以检测RF信号的包络和/或可以检测RF信号中的一个或多个峰值。 可以通过调整由偏置控制电路提供的偏置电流和/或通过用与一个或多个负峰重合的一个或多个限幅校正脉冲修改RF信号来防止一个或多个负峰值引起限幅。
    • 80. 发明申请
    • LASER ARRAY MUX ASSEMBLY WITH EXTERNAL REFLECTOR FOR PROVIDING A SELECTED WAVELENGTH OR MULTIPLEXED WAVELENGTHS
    • 具有外部反射器的激光阵列复用器组件,用于提供选定的波长或多个波长
    • US20130016977A1
    • 2013-01-17
    • US13357130
    • 2012-01-24
    • Jun ZhengStefan J. Murry
    • Jun ZhengStefan J. Murry
    • H04J14/02
    • H01S5/0268H01S5/1028H01S5/141H01S5/146H01S5/4062H01S5/4087H04B10/2587H04J14/0282
    • A laser array mux assembly generally includes an array of laser emitters coupled to an optical multiplexer, such as an arrayed waveguide grating (AWG), with an external partial reflector after the multiplexer. Each of the laser emitters may include a gain region that emits light across a range of wavelengths including, for example, channel wavelengths in an optical communication system. The AWG filters the emitted light from each of the laser emitters at different channel wavelengths associated with each of the laser emitters. The reflector reflects at least a portion of the filtered light such that lasing occurs at the channel wavelengths of the reflected light. The laser array mux assembly may be used to generate an optical signal at a selected channel wavelength or to generate and combine optical signals at multiple channel wavelengths.
    • 激光器阵列多路复用器组件通常包括耦合到诸如阵列波导光栅(AWG)的光学多路复用器的激光发射器的阵列,在多路复用器之后具有外部部分反射器。 每个激光发射器可以包括在包括例如光通信系统中的信道波长的波长范围内发射光的增益区域。 AWG在与每个激光发射器相关联的不同通道波长处对来自每个激光发射器的发射光进行滤波。 反射器反射至少一部分经滤光的光,使得在反射光的通道波长处发生激光。 可以使用激光阵列多路复用器组件来产生所选择的信道波长的光信号,或者产生并组合多个信道波长的光信号。