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    • 52. 发明申请
    • SYSTEMS AND METHODS FOR A DISCRETE RESIZING OF POWER DEVICES WITH CONCURRENT POWER COMBINING STRUCTURE FOR RADIO FREQUENCY POWER AMPLIFIER
    • 用于无线电频率功率放大器的具有相同功率组合结构的功率器件分离的系统和方法
    • US20110260797A1
    • 2011-10-27
    • US12765988
    • 2010-04-23
    • Chang-Ho Lee
    • Chang-Ho Lee
    • H03F3/68
    • H03F3/211
    • Systems and methods are provided for discrete resizing of power devices. The systems and methods can include a plurality of unit power amplifiers arranged in parallel, where each unit power amplifier includes at least one first input port, at least one first output port, and a plurality of sub-power-device cells configured in parallel between the at least one first input port and the at least one first output port; a switch controller, where the controller is operative to activate or deactivate at least one of the plurality of sub-power-device cells of a respective unit power amplifier; and an output matching network, where the matching network is configured to combine respective outputs from the respective plurality of unit power amplifiers to generate a system output, wherein during an operational state, all of the plurality of unit power amplifiers contribute outputs to the matching network to generate the system output.
    • 提供了用于功率器件分立调整大小的系统和方法。 该系统和方法可以包括并联布置的多个单位功率放大器,其中每个单位功率放大器包括至少一个第一输入端口,至少一个第一输出端口以及多个子功率器件单元 所述至少一个第一输入端口和所述至少一个第一输出端口; 开关控制器,其中所述控制器用于激活或去激活相应单元功率放大器的所述多个子功率器件单元中的至少一个; 以及输出匹配网络,其中匹配网络被配置为组合来自相应的多个单元功率放大器的各个输出以产生系统输出,其中在操作状态期间,所有多个单位功率放大器向输入匹配网络贡献输出 生成系统输出。
    • 53. 发明授权
    • Systems and methods for a SPDT switch or SPMT switch with transformer
    • 具有变压器的SPDT开关或SPMT开关的系统和方法
    • US08044540B2
    • 2011-10-25
    • US12565137
    • 2009-09-23
    • Dong Ho LeeMinsik AhnKyu Hwan AnWangmyong WooChang-Ho LeeJoy Laskar
    • Dong Ho LeeMinsik AhnKyu Hwan AnWangmyong WooChang-Ho LeeJoy Laskar
    • H01H31/10
    • H03K17/693Y10T307/76
    • A SPDT or SPMT switch may include a transformer having a primary winding and a secondary winding, where a first end of the secondary winding is connected to a single pole port, where a first end of the primary winding is connected to a first throw port; a first switch having a first end and a second end, where the first end is connected to ground; and a second switch, where a second end of the secondary winding is connected to both a second end of the first switch and a first end of the second switch, where a second end of the second switch is connected to a second throw port, where the first switch controls a first communication path between the single pole port and the first throw port, and where the second switch controls a second communication path between the second throw port and the single pole port.
    • SPDT或SPMT开关可以包括具有初级绕组和次级绕组的变压器,其中次级绕组的第一端连接到单极端口,其中初级绕组的第一端连接到第一端口; 第一开关,其具有第一端和第二端,其中第一端连接到地; 以及第二开关,其中所述次级绕组的第二端连接到所述第一开关的第二端和所述第二开关的第一端,其中所述第二开关的第二端连接到第二突出端口,其中 第一开关控制单极端口和第一端口之间的第一通信路径,并且其中第二开关控制第二端口和单极端口之间的第二通信路径。
    • 57. 发明授权
    • Limited current circuit of digital inverter for LCD backlight
    • LCD背光数字逆变器有限电流电路
    • US07911147B2
    • 2011-03-22
    • US11646720
    • 2006-12-27
    • Oh-Sang KwonChang-Ho LeeYong-Kon Lee
    • Oh-Sang KwonChang-Ho LeeYong-Kon Lee
    • H05B37/00
    • H05B41/2858Y02B20/186
    • A limited current circuit of this invention comprising: a transformer that raises an alternating current (AC) power supplied from the digital inverter to an AC voltage of a high voltage to light a lamp; a voltage/current detection unit that detects at least one of the current and voltage supplied to the lamp; an A/D converter that converts the detected voltage/current value of analog to a digital value; and a microcontroller unit (MCU) that induces an LCC check point after the start of a striking process, compares at least one of the output current value and voltage value from the transformer with a preset reference value on the basis of an output signal of the A/D converter and then shuts down the inverter when the output current value or voltage value is determined to be abnormal, wherein the reference value comprises at least one of the current value and voltage value measured at the LCC check point when an object having noninductive resistance is not contacted to the inverter.
    • 本发明的有限电流电路包括:变压器,其将从数字逆变器提供的交流电(AC)电力提高到高电压的AC电压以点亮灯; 电压/电流检测单元,其检测提供给所述灯的电流和电压中的至少一个; A / D转换器,其将检测到的模拟电压/电流值转换为数字值; 以及在触发过程开始之后引起LCC检查点的微控制器单元(MCU),将来自变压器的输出电流值和电压值中的至少一个与预设的参考值进行比较,基于输出信号 A / D转换器,然后当输出电流值或电压值被确定为异常时,关闭逆变器,其中参考值包括当具有非导体的物体时在LCC检查点测量的电流值和电压值中的至少一个 电阻不接触逆变器。