公开(公告)号：US08018267B2

公开(公告)日：2011-09-13

申请号：US12819144

申请日：2010-06-18

申请人： Yun-mo Kang ,  Tae-yeoul Yun ,  Hee-woo An ,  Chang Sun Kim ,  Yea Chul Roh ,  Seong Hoon Choi

发明人： Yun-mo Kang ,  Tae-yeoul Yun ,  Hee-woo An ,  Chang Sun Kim ,  Yea Chul Roh ,  Seong Hoon Choi

IPC分类号： G06G7/12

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0084

摘要： Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage. The bias stage is connected between the transconductance stage and a ground terminal, and has the switched biasing technique for allowing not only the stable bias current but also lowering the flicker noise.

摘要翻译： 提供了一种变频混频器。 变频混频器包括跨导级，开关级，负载级，电流泄放电路和偏置级。 跨导级接收RF信号，并且输出与RF信号的电压相对应的电流。 开关级响应于本地振荡信号切换从跨导级输出的电流，以将RF信号频率转换成中频（IF）信号。 负载级连接在开关级和电源电压端子之间。 电流放电电路与开关级并联连接，特别是体现了跨导级逆变器结构，不仅具有电流出流效应，而且具有电流再利用效应，还有一个谐振电感，用于降低跨导间节点寄生电容产生的噪声 舞台和切换阶段。 偏置级连接在跨导级与接地端子之间，并且具有开关偏置技术，不仅允许稳定的偏置电流，还允许降低闪烁噪声。

公开(公告)号：US20110109392A1

公开(公告)日：2011-05-12

申请号：US12907925

申请日：2010-10-19

申请人： Jang Hyun PARK ,  Chang Sun Kim ,  Yea Chul Roh ,  Tae-Yeoul Yun ,  Hyun-kyu Park ,  Ji-Young Lee

发明人： Jang Hyun PARK ,  Chang Sun Kim ,  Yea Chul Roh ,  Tae-Yeoul Yun ,  Hyun-kyu Park ,  Ji-Young Lee

IPC分类号： H03F1/34

CPC分类号： H03F1/32 ,  H03F1/223 ,  H03F1/342 ,  H03F2200/117 ,  H03F2200/144 ,  H03F2200/147 ,  H03F2200/294 ,  H03F2200/36 ,  H03F2200/411 ,  H03F2200/451

摘要： Provided is a Low Noise Amplifier (LNA). Embodiments of the present invention provide LNAs including: a common gate amplifier circuit configure to amplify a signal of an input node to which an Alternating Current (AC) component is provided and transfer the amplified signal to an amplifier node; and a negative-feedback amplifier circuit configured to amplify a signal of the amplifier node, transfer the amplified signal to an output node, wherein the negative-feedback amplifier circuit includes a feedback capacitor and a feedback inductor connected in series between the amplifier node and the output node to form a negative feedback. the LNA of the present invention forms a negative feedback exclusive of a feedback resistance, such that a broad frequency bandwidth is obtained and noise and heat are reduced.

摘要翻译： 提供了一种低噪声放大器（LNA）。 本发明的实施例提供LNA，其包括：公共栅极放大器电路，其配置为放大提供交流电（AC）分量的输入节点的信号，并将放大的信号传送到放大器节点; 以及负反馈放大器电路，被配置为放大放大器节点的信号，将放大的信号传送到输出节点，其中负反馈放大器电路包括反馈电容器和反馈电感器，其串联连接在放大器节点和 输出节点形成负反馈。 本发明的LNA形成排除反馈电阻的负反馈，从而获得宽的频率带宽，降低噪声和热量。

公开(公告)号：US08629852B2

公开(公告)日：2014-01-14

申请号：US12878338

申请日：2010-09-09

申请人： Oh-Kyong Kwon ,  Jang Hyun Park ,  Yea Chul Roh ,  Chang Sun Kim

发明人： Oh-Kyong Kwon ,  Jang Hyun Park ,  Yea Chul Roh ,  Chang Sun Kim

IPC分类号： G06F3/045 ,  G06F3/041

CPC分类号： G06F3/0418 ,  G06F3/044

摘要： Provided are a touch screen and a method for compensating sensing capacitance variations and offset variations thereof. The touch screen includes: a touch panel where a plurality of driving lines and a plurality of sensing lines intersect and are wired; a driving unit for activating the driving lines sequentially; an input unit for measuring a sensing capacitance formed in a sensing line corresponding to an activated driving line; a multiplexer for serializing and outputting the measured sensing capacitance; an analog-to-digital converter for sampling the sensing capacitance outputted from the multiplexer by reflecting an initial sensing capacitance as an offset and performing analog-to-digital conversion for the sampling result; and a host processor for determining a touch event in response to the analog-to-digital conversion result.

摘要翻译： 提供了一种用于补偿感测电容变化和偏移变化的触摸屏和方法。 触摸屏包括：触摸面板，其中多条驱动线和多条感测线相交并布线; 顺序地驱动行驶线的驱动单元; 输入单元，用于测量与激活的驱动线相对应的感测线中形成的感测电容; 用于串行化并输出所测量的感测电容的多路复用器; 模拟数字转换器，用于通过将初始感测电容反映为偏移并对采样结果执行模数转换，对从多路复用器输出的感测电容进行采样; 以及主机处理器，用于响应于模数转换结果确定触摸事件。

公开(公告)号：US20110109585A1

公开(公告)日：2011-05-12

申请号：US12878338

申请日：2010-09-09

申请人： Oh-Kyong KWON ,  Jang Hyun Park ,  Yea Chul Roh ,  Chang Sun Kim

发明人： Oh-Kyong KWON ,  Jang Hyun Park ,  Yea Chul Roh ,  Chang Sun Kim

IPC分类号： G06F3/045

CPC分类号： G06F3/0418 ,  G06F3/044

摘要： Provided are a touch screen and a method for compensating sensing capacitance variations and offset variations thereof. The touch screen includes: a touch panel where a plurality of driving lines and a plurality of sensing lines intersect and are wired; a driving unit for activating the driving lines sequentially; an input unit for measuring a sensing capacitance formed in a sensing line corresponding to an activated driving line; a multiplexer for serializing and outputting the measured sensing capacitance; an analog-to-digital converter for sampling the sensing capacitance outputted from the multiplexer by reflecting an initial sensing capacitance as an offset and performing analog-to-digital conversion for the sampling result; and a host processor for determining a touch event in response to the analog-to-digital conversion result.

摘要翻译： 提供了一种用于补偿感测电容变化和偏移变化的触摸屏和方法。 触摸屏包括：触摸面板，其中多条驱动线和多条感测线相交并布线; 顺序地驱动行驶线的驱动单元; 输入单元，用于测量与激活的驱动线相对应的感测线中形成的感测电容; 用于串行化并输出所测量的感测电容的多路复用器; 模拟数字转换器，用于通过将初始感测电容反映为偏移并对采样结果执行模数转换，对从多路复用器输出的感测电容进行采样; 以及主机处理器，用于响应于模数转换结果确定触摸事件。