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1.发明授权Elimination of DC offset in analog baseband circuit with minimized transients 失效以最小的瞬变消除模拟基带电路中的直流偏移公开(公告)号：US07760824B2
公开(公告)日：2010-07-20
申请号：US11788411
申请日：2007-04-20
申请人： Jae-Wan Kim , Young-Jin Kim , Jae-Heon Lee
发明人： Jae-Wan Kim , Young-Jin Kim , Jae-Heon Lee
IPC分类号： H04L27/08
CPC分类号： H03G3/3052 , H03G1/04
摘要： An analog baseband circuit includes first and second DC (direct current) offset cancellers and an offset canceller controller. The first DC offset canceller includes a first filter and a first PGA (programmable gain amplifier) with a first gain step for eliminating a first dc component from an input baseband signal. The second DC offset canceller includes a second filter and a second PGA with a second gain step less than the first gain step for eliminating a second dc component from an output of the first DC offset canceller. The offset canceller controller controls the first and second filters to operate in a fast mode when a gain of the first PGA is changed.
摘要翻译： 模拟基带电路包括第一和第二DC（直流）偏移消除器和偏移消除器控制器。 第一DC偏移消除器包括第一滤波器和第一PGA（可编程增益放大器），其具有用于从输入基带信号消除第一直流分量的第一增益步骤。 第二DC偏移消除器包括第二滤波器和具有小于第一增益步长的第二增益步长的第二PGA，用于从第一DC偏移消除器的输出消除第二直流分量。 当第一PGA的增益改变时，偏移消除器控制器控制第一和第二滤波器以快速模式操作。
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2.发明申请Elimination of DC offset in analog baseband circuit with minimized transients 失效以最小的瞬变消除模拟基带电路中的直流偏移公开(公告)号：US20070259638A1
公开(公告)日：2007-11-08
申请号：US11788411
申请日：2007-04-20
申请人： Jae-Wan Kim , Young-Jin Kim , Jae-Heon Lee
发明人： Jae-Wan Kim , Young-Jin Kim , Jae-Heon Lee
CPC分类号： H03G3/3052 , H03G1/04
摘要： An analog baseband circuit includes first and second DC (direct current) offset cancellers and an offset canceller controller. The first DC offset canceller includes a first filter and a first PGA (programmable gain amplifier) with a first gain step for eliminating a first dc component from an input baseband signal. The second DC offset canceller includes a second filter and a second PGA with a second gain step less than the first gain step for eliminating a second dc component from an output of the first DC offset canceller. The offset canceller controller controls the first and second filters to operate in a fast mode when a gain of the first PGA is changed.
摘要翻译： 模拟基带电路包括第一和第二DC（直流）偏移消除器和偏移消除器控制器。 第一DC偏移消除器包括第一滤波器和第一PGA（可编程增益放大器），其具有用于从输入基带信号消除第一直流分量的第一增益步骤。 第二DC偏移消除器包括第二滤波器和具有小于第一增益步长的第二增益步长的第二PGA，用于从第一DC偏移消除器的输出消除第二直流分量。 当第一PGA的增益改变时，偏移消除器控制器控制第一和第二滤波器以快速模式操作。
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公开(公告)号：US20070075777A1
公开(公告)日：2007-04-05
申请号：US11528880
申请日：2006-09-28
申请人： Jae-Wan Kim
发明人： Jae-Wan Kim
IPC分类号： H03F3/45
CPC分类号： H03F3/45197 , H03F3/4565
摘要： A DC offset elimination device includes a first signal path that delivers a differential input signal pair from an input node to an output node and a second signal path that delivers a differential output signal pair from the output node to the input node. The second signal path includes a first transconductor having an input terminal coupled to the output node, an amplifier having an input terminal coupled to an output terminal of the first transconductor, a capacitor coupled in parallel to the amplifier, and a second transconductor coupled to the output terminal of the amplifier and to the input node.
摘要翻译： DC偏移消除装置包括将差分输入信号对从输入节点传递到输出节点的第一信号路径以及将差分输出信号对从输出节点传送到输入节点的第二信号路径。 第二信号路径包括具有耦合到输出节点的输入端的第一跨导体，具有耦合到第一跨导体的输出端的输入端的放大器，与放大器并联耦合的电容器和耦合到放大器的第二跨导器 输出端子和输入节点。
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公开(公告)号：US20050275438A1
公开(公告)日：2005-12-15
申请号：US11145254
申请日：2005-06-03
申请人： Jae-Wan Kim
发明人： Jae-Wan Kim
CPC分类号： H03L7/093 , H03H11/483 , H03L7/0891
摘要： A capacitance multiplier includes a cascade of a plurality of current amplifiers with each current amplifier having a respective current gain Ki. In addition, the capacitance multiplier includes a capacitor coupled in parallel across the cascade of current amplifiers. Such a capacitance multiplier occupies a smaller area with higher capacitance gain but with low power consumption.
摘要翻译： 电容倍增器包括多个电流放大器的级联，每个电流放大器具有相应的电流增益Ki。 此外，电容倍增器包括并联耦合在级联的电流放大器上的电容器。 这种电容倍增器占用较小的区域，具有较高的电容增益但功耗较低。
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公开(公告)号：US06850676B2
公开(公告)日：2005-02-01
申请号：US10193433
申请日：2002-07-11
申请人： Jong-Youl Kim , Seung-Jin Baek , Jae-Wan Kim
发明人： Jong-Youl Kim , Seung-Jin Baek , Jae-Wan Kim
CPC分类号： G02B6/3636 , G02B6/3652 , G02B6/3692 , G03F1/38 , G03F1/80
摘要： A photomask is disclosed for the fabrication of an optical fiber block including a first section provided with slit arrays adapted to form an optical fiber alignment region of the optical fiber block while having a uniform slit pitch, partition portions arranged between adjacent ones of the slit arrays while having a pitch larger than the slit pitch, and end portions arranged outside the slit arrays while having a pitch larger than the slit pitch. The photomask also includes a second section adapted to form a stress-reducing recessed region of the optical fiber block etched to a desired depth from the level of the optical fiber alignment region. The photomask also includes auxiliary slit arrays arranged at an interface between the first and second sections. The auxiliary slit array includes at least one slit.
摘要翻译： 公开了一种用于制造光纤块的光掩模，该光纤块包括：第一部分，其设置有狭缝阵列，该狭缝阵列适于形成光纤块的光纤对准区域，同时具有均匀的狭缝间距;分隔部分布置在相邻的狭缝阵列之间 同时具有大于狭缝间距的间距，以及设置在狭缝阵列外侧的端部，同时具有大于狭缝间距的间距。 光掩模还包括第二部分，其适于形成从光纤对准区域的水平面蚀刻到期望深度的光纤块的应力减小凹陷区域。 光掩模还包括布置在第一和第二部分之间的界面处的辅助狭缝阵列。 辅助狭缝阵列包括至少一个狭缝。
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公开(公告)号：US06859588B2
公开(公告)日：2005-02-22
申请号：US10074528
申请日：2002-02-12
申请人： Hyun-Ki Kim , Moon-Koog Song , Jae-Wan Kim , Jong-Youl Kim
发明人： Hyun-Ki Kim , Moon-Koog Song , Jae-Wan Kim , Jong-Youl Kim
CPC分类号： G02B6/3636 , G02B6/30 , G02B6/3652
摘要： This invention provides an optical fiber block that includes an optical-fiber-alignment portion and a stress-reduction-depth portion. In the optical-fiber-alignment portion, a V groove array is arranged to accommodate the non-coated fiber portion of a ribbon fiber. The V groove array is formed by primary and secondary wet-etching processes on a silicon wafer, and further includes first V grooves at both sides and second V grooves different from the first V grooves disposed between the first V grooves. Meanwhile, the stress-reduction-depth portion is formed by another wet etching, extending to a predetermined depth from the optical-fiber-alignment portion, for reducing stress caused by a variation in the coating thickness of the optical fibers.
摘要翻译： 本发明提供一种光纤块，其包括光纤对准部和应力减少深度部。 在光纤取向部中，配置V槽阵列以容纳带状光纤的未涂覆光纤部分。 V沟槽阵列通过在硅晶片上的初级和次级湿蚀刻工艺形成，并且还包括两侧的第一V槽和与设置在第一V槽之间的第一V槽不同的第二V槽。 同时，通过另一湿法蚀刻形成应力减小深度部分，从光纤取向部延伸至预定深度，以减少由于光纤的涂层厚度变化引起的应力。
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公开(公告)号：US06830376B2
公开(公告)日：2004-12-14
申请号：US10282070
申请日：2002-10-29
申请人： Jae-Wan Kim , Jae-Hyun Jung , Hyeong-Cheol Kim , Jun-Bo Kim , Won Choi , Hyoung-Jo Jeon
发明人： Jae-Wan Kim , Jae-Hyun Jung , Hyeong-Cheol Kim , Jun-Bo Kim , Won Choi , Hyoung-Jo Jeon
IPC分类号： G01D1800
摘要： A radioactive image apparatus and a method of controlling a focus thereof. The radioactive image apparatus includes a radioactive ray generating unit, a robot table, and a radioactive ray detecting unit. The focus control method includes obtaining a radioactive transmission image of a test pattern, defining a circle with a given radius in the radioactive transmission image of the test pattern, detecting values of pixels located on a circumference of the circle, calculating the standard deviation of the values of the pixels located on the circumference of the circle, and determining the radius of the circle to be an index factor of a resolution in response to the calculated standard deviation being smaller than a preset threshold value.
摘要翻译： 放射性图像装置及其焦点的控制方法。 放射性图像装置包括放射线产生单元，机器人台和放射线检测单元。 聚焦控制方法包括获得测试图案的放射性透射图像，在测试图案的放射性透射图像中定义具有给定半径的圆，检测位于圆周上的像素的值，计算 位于圆周上的像素的值，以及响应于所计算的标准偏差小于预设阈值，将圆的半径确定为分辨率的指标因子。
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公开(公告)号：US08485849B2
公开(公告)日：2013-07-16
申请号：US13106013
申请日：2011-05-12
申请人： Hae-Won Ahn , Jae-Wan Kim , Dong Hoon Kwak
发明人： Hae-Won Ahn , Jae-Wan Kim , Dong Hoon Kwak
IPC分类号： H01R13/648
CPC分类号： H01R12/707 , H01R12/714 , H01R13/6594 , H01R43/16 , Y10T29/49204
摘要： A Universal Serial Bus (USB) connector with a connector housing is provided with at least one soldering part and at least one reinforcement part around its circumference. The USB connector includes: a connector housing; one or more soldering parts formed by cutting and unfolding predetermined areas around the circumference of the connector housing; and one or more reinforcement parts, each of which is formed by bending an end of the connector housing. The reinforcement parts being engaged with the soldering parts to support and reinforce the soldering parts, respectively.
摘要翻译： 具有连接器壳体的通用串行总线（USB）连接器设置有至少一个焊接部分和围绕其周边的至少一个加强部分。 USB连接器包括：连接器壳体; 通过在连接器壳体的周围切割和展开预定区域而形成的一个或多个焊接部件; 以及一个或多个加强部件，每个加强部件通过弯曲连接器壳体的端部而形成。 加强部件与焊接部件接合以分别支撑和加固焊接部件。
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9.发明授权RF transmitter for efficiently compensating output power variation due to temperature and process 失效RF发射器，用于有效地补偿由温度和过程引起的输出功率变化公开(公告)号：US07564922B2
公开(公告)日：2009-07-21
申请号：US11290534
申请日：2005-12-01
申请人： Jae-Wan Kim , Jong-Dae Bae
发明人： Jae-Wan Kim , Jong-Dae Bae
CPC分类号： H03F1/30 , H03B5/24 , H03B2200/0058 , H04B2001/0416 , H04L27/368
摘要： An RF transmitter includes a modulating circuit adapted to modulating an RF signal, an output amplifier adapted to amplify the modulated RF signal; an auto tuner generating a tuning voltage that varies in accordance with operating temperature fluctuations and/or manufacturing process variances, and a reference current generating circuit adapted to generate a reference current in response to the tuning voltage.
摘要翻译： RF发射机包括适于调制RF信号的调制电路，适于放大经调制的RF信号的输出放大器; 产生根据工作温度波动和/或制造工艺方差变化的调谐电压的自动调谐器，以及适于响应于调谐电压产生参考电流的参考电流产生电路。
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公开(公告)号：US20060035617A1
公开(公告)日：2006-02-16
申请号：US11193713
申请日：2005-07-29
申请人： Jae-Wan Kim
发明人： Jae-Wan Kim
CPC分类号： H04B1/0032 , H04B1/28
摘要： An intermediate frequency receiver includes mixers for generating first and second IF signals from a RF signal and local oscillator signals. A magnitude calibration loop adjusts a gain of the first and/or second IF signals generated from the mixers depending on a magnitude difference between the IF signals. The phase calibration loop adjusts a phase of a local oscillator signal before being used at the mixers depending on a phase difference between the IF signals.
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