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    • 1. 发明申请
    • Wake-up system using oscillation
    • 唤醒系统使用振荡
    • US20060101298A1
    • 2006-05-11
    • US11073819
    • 2005-03-07
    • Tah ParkYoung KwonJoong Kim
    • Tah ParkYoung KwonJoong Kim
    • G06F1/26
    • G06F1/3203
    • Disclosed is a wake-up system based on an oscillation principle adopted to wireless transmission/reception devices such as remote controllers, mobile communication terminals, etc. The wake-up system uses oscillation capable of performing a wake-up operation such that a receiver responds to a wake-up signal transmitted from a transmitter with a relatively low power, as an amplifying unit including an amplifier and a correlator is oscillated, in which the correlator is connected to the amplifier through a positive feedback loop and another correlator having the same structure as that of the receiver is applied to the transmitter.
    • 公开了基于对诸如遥控器,移动通信终端等的无线发送/接收设备采用的振荡原理的唤醒系统。唤醒系统使用能够执行唤醒操作的振荡,使得接收机响应 到具有相对较低功率的发射机发送的唤醒信号,作为包括放大器和相关器的放大单元被振荡,其中相关器通过正反馈回路连接到放大器,并且具有相同结构的另一个相关器 因为接收机应用于发射机。
    • 2. 发明申请
    • Optical coupling module with self-aligned etched grooves and method for fabricating the same
    • 具有自对准蚀刻槽的光耦合模块及其制造方法
    • US20050185892A1
    • 2005-08-25
    • US11110100
    • 2005-04-19
    • Young KwonBun-Joong Kim
    • Young KwonBun-Joong Kim
    • G02B6/42G02B6/30G02B6/36
    • G02B6/3636G02B6/30G02B6/3652G02B6/3692
    • The present invention relates to an optical coupling module for optically coupling an optical fiber with an optical waveguide, and a method of fabricating the optical coupling module. In an optical coupling module for optically coupling an optical network with a planar lightwave circuit (PLC), an etched groove for disposition of the optical fiber and an etched groove for mounting of the optical waveguide are exposed using a mask having mask patterns that are aligned with each other, and then anisotropically etched. By doing so, the two grooves can be precisely aligned with each other at one time, compared with a conventional method in which an exposure process is carried out two or more times. Accordingly, an inexpensive structure having high optical coupling efficiency upon manual alignment can be obtained. In addition, since a tapered structure in which an inlet is larger than a body is employed in the optical waveguide, tolerance in vertical and horizontal alignment upon manual alignment can be broaden, resulting in improvement of optical coupling efficiency and facilitation of manual alignment. Furthermore, by utilizing a thick insulation film on the substrate or a thick insulation film of the optical waveguide itself as a board, a structure for allowing assembly into and application to a high-frequency electric-optical circuit can be obtained.
    • 本发明涉及光耦合光波导的光耦合模块及其制造方法。 在用于光学耦合光网络与平面光波电路(PLC)的光耦合模块中,用于配置光纤的蚀刻凹槽和用于安装光波导的蚀刻凹槽使用具有对准的掩模图案的掩模来曝光 彼此之间,然后各向异性蚀刻。 通过这样做,与其中曝光处理进行两次或更多次的常规方法相比,两个凹槽可以一次精确对准。 因此,可以获得在手动对准时具有高光耦合效率的便宜的结构。 此外,由于在光波导中采用入口大于体的锥形结构,因此可以使手动对准时的垂直和水平对准中的公差变宽,从而提高光耦合效率并促进手动对准。 此外,通过将基板上的厚绝缘膜或光波导本身的厚绝缘膜用作基板,可以获得用于组装到高频电光电路中并应用于其的结构。
    • 3. 发明授权
    • Impedance matching circuit capable of efficiently isolating paths for multi-band power amplifier
    • 阻抗匹配电路能够有效隔离多波段功率放大器的路径
    • US08643449B2
    • 2014-02-04
    • US12732409
    • 2010-03-26
    • Jung Hyun KimUn Ha KimSang Hwa JungYoung Kwon
    • Jung Hyun KimUn Ha KimSang Hwa JungYoung Kwon
    • H03H7/38
    • H03F1/56
    • In accordance with a representative embodiment, an impedance matching circuit for use at an output stage of a power amplifier is disclosed. The impedance matching circuit comprises: an input port for receiving a frequency band signal; and a plurality of paths, each path being allocated with a principal band signal to be transmitted therethrough and including a path on-off network and a fixed-value impedance matching network. Depending on a type of the received frequency band signal, the path on-off network is configured to activate a selected one of the plurality of paths by rendering an input impedance of the selected path to have a lower absolute magnitude so that the signal is transmitted therethrough, and to deactivate the remaining paths of the plurality of paths by rendering the input impedance thereof to have a higher absolute magnitude so that the signal is not transmitted therethrough. The fixed-value impedance matching network matches a load impedance of the output port of each path to the input impedance thereof, thereby rendering the input impedance thereof to have a prescribed reference value with respect to the principal band signal when said path is activated by the path on-off network.
    • 根据代表性实施例,公开了一种在功率放大器的输出级使用的阻抗匹配电路。 阻抗匹配电路包括:用于接收频带信号的输入端口; 和多个路径,每个路径被分配有要通过其传输的主频带信号,并且包括路径开关网络和固定值阻抗匹配网络。 根据所接收的频带信号的类型,路径开关网络被配置为通过使所选择的路径的输入阻抗具有较低的绝对量值来激活所述多个路径中的所选择的一个路径,使得发送所述信号 并且通过使其输入阻抗具有更高的绝对量值来使多个路径的剩余路径去激活,使得该信号不通过其传输。 固定值阻抗匹配网络将每个路径的输出端口的负载阻抗与其输入阻抗匹配,从而当所述路径被激活时,其输入阻抗相对于主频带信号具有规定的参考值 路径开关网络。
    • 7. 发明授权
    • Power amplifier
    • 功率放大器
    • US08779860B2
    • 2014-07-15
    • US13586218
    • 2012-08-15
    • Moon Suk JeonJung Rin WooSang Hwa JungJung Hyun KimYoung Kwon
    • Moon Suk JeonJung Rin WooSang Hwa JungJung Hyun KimYoung Kwon
    • H03F1/22
    • H03F1/223H03F1/0222H03F2200/102H03F2200/18
    • A power amplifier comprises a common source amplification stage and a first common gate amplification stage. The common source amplification stage includes a common source transistor for receiving a radio frequency (RF) input signal via a gate. The first common gate amplification stage is connected in cascode between a variable supply voltage source and the common source amplification stage, and amplifies an output of the common source amplification stage. The first common gate amplification stage includes a first common gate transistor, and a first gate bias controller configured to generate a first divided voltage based on a variable supply voltage of the variable supply voltage source, and to supply a first gate bias voltage generated by buffering the first divided voltage to a gate of the first common gate transistor.
    • 功率放大器包括公共源极放大级和第一公共栅极放大级。 公共源极放大级包括用于经由栅极接收射频(RF)输入信号的公共源极晶体管。 第一公共栅极放大级以可变电源电压源和公共源极放大级之间的级联连接,并放大公共源极放大级的输出。 第一公共栅极放大级包括第一公共栅极晶体管和第一栅极偏置控制器,其被配置为基于可变电源电压源的可变电源电压产生第一分压,并且提供由缓冲产生的第一栅极偏置电压 第一公共栅极晶体管的栅极的第一分压。
    • 8. 发明授权
    • Method and apparatus for providing impedance matching for high-frequency signal transmitter
    • 提供高频信号发射机阻抗匹配的方法和装置
    • US08233851B2
    • 2012-07-31
    • US12699112
    • 2010-02-03
    • Joo Young JeonSang Hwa JungJung Hyun KimYoung Kwon
    • Joo Young JeonSang Hwa JungJung Hyun KimYoung Kwon
    • H04B1/04H04B17/00
    • H04B1/04
    • In accordance with another representative embodiment, a high-frequency signal transmitter a power amplifier configured to supply a high-frequency signal; an antenna configured to transmit the high-frequency signal; a transmission line configured to transfer the high-frequency signal from the power amplifier to the antenna; and an impedance matching circuit connected to the transmission line. The high-frequency signal transmitter also comprises a mismatch detector. The mismatch detector is configured to designate a comparatively poor linearity region and a comparatively good linearity region by dividing a Smith chart into the two regions based on Adjacent Channel Power Ratio (ACPR) contours drawn on the Smith chart at a point on the transmission line where the impedance matching circuit is connected, to measure a time-dependent reflection coefficient of the high-frequency signal transmitter in terms of a phase and a magnitude, to determine whether the reflection coefficient is located in the comparatively poor linearity region or the comparatively good linearity region, and based on a result of the determination, to improve the linearity of the high-frequency signal transmitter.
    • 根据另一个代表性实施例,一种高频信号发射机,被配置为提供高频信号的功率放大器; 配置为发送高频信号的天线; 传输线,被配置为将高频信号从功率放大器传送到天线; 以及与传输线连接的阻抗匹配电路。 高频信号发射机还包括不匹配检测器。 不匹配检测器被配置为通过基于在传输线上的一点上在史密斯圆图上绘制的相邻信道功率比(ACPR)轮廓将史密斯圆图划分成两个区域来指定相对较差的线性区域和相对良好的线性度区域,其中 连接阻抗匹配电路,根据相位和幅度测量高频信号发射器的时间相关反射系数,以确定反射系数是否位于相对较差的线性区域或较好的线性度 区域,并且基于确定的结果,提高高频信号发射机的线性度。