公开(公告)号：US07782928B2

公开(公告)日：2010-08-24

申请号：US11508569

申请日：2006-08-23

申请人： Hyun-Il Kang ,  Chang-Seok Lee ,  Jae-Kon Lee ,  Jong-Ae Park ,  Jae-Sup Lee ,  Tae-Wook Kim ,  Sang-Hyun Woo

发明人： Hyun-Il Kang ,  Chang-Seok Lee ,  Jae-Kon Lee ,  Jong-Ae Park ,  Jae-Sup Lee ,  Tae-Wook Kim ,  Sang-Hyun Woo

IPC分类号： H04B1/38

CPC分类号： H04L25/061 ,  H03D3/008 ,  H04B17/101 ,  H04B17/14 ,  H04B17/21 ,  H04L1/243

摘要： Disclosed is a method and an apparatus for self-calibrating direct current (DC) offset and imbalance between orthogonal signals, which may occur in a mobile transceiver. In the apparatus, a transmitter of a mobile terminal functions as a signal generator, and a receiver of the mobile terminal functions as a response characteristic detector. Further, a baseband processor applies test signals to the transmitter, receives the test signals returning from the receiver, and compensates the imbalance and DC offset for the transmitter side and the receiver side by using the test signals.

摘要翻译： 公开了用于自校准直流（DC）偏移和正交信号之间的不平衡的方法和装置，其可能发生在移动收发机中。 在该装置中，移动终端的发射机用作信号发生器，移动终端的接收机用作响应特性检测器。 此外，基带处理器将测试信号施加到发射机，接收从接收机返回的测试信号，并且通过使用测试信号来补偿发射机侧和接收机侧的不平衡和DC偏移。

公开(公告)号：US07454185B2

公开(公告)日：2008-11-18

申请号：US11089219

申请日：2005-03-24

申请人： Yun-Seo Park ,  Sang-Hyun Woo ,  Hwan-Seok Song ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

发明人： Yun-Seo Park ,  Sang-Hyun Woo ,  Hwan-Seok Song ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC分类号： H04B1/10

CPC分类号： H03D7/165 ,  H03H7/20 ,  H03H7/21 ,  H03H2007/0192

摘要： An apparatus for generating an in-phase/quadrature-phase (I/Q) signal in a wireless transceiver is disclosed, including a local oscillator for generating an oscillation signal, and first and second mixers for mixing an oscillation signal with a transmission/reception signal to convert the transmission/reception signal into a baseband or high-frequency signal. The apparatus includes a phase locked circuit for controlling the local oscillator, and a polyphase filter installed between the local oscillator and the mixers, for separating the oscillation signal from the local oscillator into an I signal and a Q signal depending on a control signal from the phase locked circuit, and outputting the separated I and Q signals to the first and second mixers, respectively.

摘要翻译： 公开了一种用于在无线收发机中产生同相/正交相（I / Q）信号的装置，包括用于产生振荡信号的本地振荡器，以及用于将振荡信号与发送/接收混合的第一和第二混频器 信号将发送/接收信号转换为基带或高频信号。 该装置包括用于控制本地振荡器的锁相电路和安装在本地振荡器和混频器之间的多相滤波器，用于将振荡信号与本地振荡器分离成I信号和Q信号，这取决于来自 并且将分离的I和Q信号分别输出到第一和第二混频器。

公开(公告)号：US07414505B2

公开(公告)日：2008-08-19

申请号：US10436142

申请日：2003-05-13

申请人： Sang-hyun Woo ,  Kwang-du Lee

发明人： Sang-hyun Woo ,  Kwang-du Lee

IPC分类号： H01F5/00 ,  H01F7/06 ,  H01L23/02

CPC分类号： H01L21/568 ,  H01F17/0006 ,  H01L21/486 ,  H01L21/6835 ,  H01L23/49816 ,  H01L23/66 ,  H01L24/29 ,  H01L24/81 ,  H01L24/83 ,  H01L2224/05571 ,  H01L2224/05573 ,  H01L2224/16225 ,  H01L2224/16235 ,  H01L2224/81801 ,  H01L2224/8319 ,  H01L2224/838 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01033 ,  H01L2924/01075 ,  H01L2924/07802 ,  H01L2924/0781 ,  H01L2924/07811 ,  H01L2924/09701 ,  H01L2924/15311 ,  H01L2924/15787 ,  H01L2924/19041 ,  H01L2924/19042 ,  H01L2924/19043 ,  H01L2924/30105 ,  H01L2924/30107 ,  H01L2924/3011 ,  Y10T29/4902 ,  H01L2924/00 ,  H01L2224/05599

摘要： An inductor used in an RF unit for a wireless communication terminal, includes first inductor means for electrically connecting an RF chip placed over a substrate at a predetermined distance from the substrate that are enclosed by an interlayer dielectric layer and second inductor means for connecting the RF chip to the first inductor means.

摘要翻译： 在用于无线通信终端的RF单元中使用的电感器包括：第一电感器装置，用于将放置在基板上的RF芯片电连接到距离衬底的预定距离并由层间介电层包围;以及第二电感器装置，用于连接RF 芯片到第一个电感装置。

公开(公告)号：US07408408B2

公开(公告)日：2008-08-05

申请号：US11185107

申请日：2005-07-20

申请人： Hyun-Il Kang ,  Young-Hwan Kim ,  Jae-Sup Lee ,  Sang-Hyun Woo

发明人： Hyun-Il Kang ,  Young-Hwan Kim ,  Jae-Sup Lee ,  Sang-Hyun Woo

IPC分类号： H03F1/26

CPC分类号： H03F1/3276

摘要： A predistorter that linearizes the nonlinearity of a power amplifier in a system supporting a multimode and a multiband (frequency band). The predistorter includes a field-effect transistor, an impedance transform unit, a first inductor, a first capacitor, and a second capacitor. The field-effect transistor has a source connected to the ground and uses a variable gate bias voltage. The impedance transform unit is connected to a drain of the field-effect transistor to perform impedance transform. The first inductor is connected between the impedance transform unit and a voltage provided to the field-effect transistor. The first capacitor is connected between a power input terminal and the impedance transform unit. The second capacitor is connected between a power output terminal and the impedance transform unit.

摘要翻译： 一种预失真器，其将支持多模和多频带（频带）的系统中的功率放大器的非线性线性化。 预失真器包括场效应晶体管，阻抗变换单元，第一电感器，第一电容器和第二电容器。 场效应晶体管具有连接到地并且使用可变栅极偏置电压的源极。 阻抗变换单元连接到场效应晶体管的漏极，以进行阻抗变换。 第一电感器连接在阻抗变换单元和提供给场效应晶体管的电压之间。 第一电容器连接在电源输入端子和阻抗变换单元之间。 第二电容器连接在电力输出端子和阻抗变换单元之间。

公开(公告)号：US07113008B2

公开(公告)日：2006-09-26

申请号：US11222011

申请日：2005-09-08

申请人： Bevin George Perumana ,  Sudipto Chakraborty ,  Chang-Ho Lee ,  Joy Laskar ,  Sang-Hyun Woo

发明人： Bevin George Perumana ,  Sudipto Chakraborty ,  Chang-Ho Lee ,  Joy Laskar ,  Sang-Hyun Woo

IPC分类号： H03B19/00

CPC分类号： H03D7/125

摘要： A frequency mixing apparatus is provided. In the frequency mixing apparatus, a PMOS transistor is coupled to an NMOS transistor in a cascode configuration and an LO signal is applied to the bulks of the PMOS and NMOS transistors so that an input signal applied to their gates is mixed with the LO signal. High isolation between the bulks and gates of the transistors resulting from application of the LO signal to the bulks prevents leakage of the LO signal, thereby decreasing a DC offset voltage. This renders the frequency mixing applicable to a DCR. Also, due to the cascade configuration similar to an inverter configuration, the frequency mixing apparatus can be incorporated in an FPGA of a MODEM in SDR applications. Frequency mixing based on switching of a threshold voltage decreases a noise factor and enables frequency mixing in a low supply voltage range, thereby decreasing power consumption.

摘要翻译： 提供了一种混频装置。 在频率混合装置中，PMOS晶体管以共源共栅配置耦合到NMOS晶体管，并且LO信号施加到PMOS和NMOS晶体管的体积，使得施加到其栅极的输入信号与LO信号混合。 通过将LO信号施加到体积而产生的晶体管的大块和栅极之间的高隔离防止了LO信号的泄漏，从而减小了DC偏移电压。 这使得频率混合适用于DCR。 另外，由于与逆变器配置相似的级联配置，所以可将混频装置并入SDR应用中的MODEM的FPGA中。 基于阈值电压的切换的频率混合降低了噪声因子，并且能够在低电源电压范围内进行频率混合，从而降低功耗。

公开(公告)号：US20060170523A1

公开(公告)日：2006-08-03

申请号：US11141123

申请日：2005-05-31

申请人： Rajarshi Mukhopadhy ,  Sebastien Nuttinck ,  Sang-Hyun Woo ,  Jong-Han Kim ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

发明人： Rajarshi Mukhopadhy ,  Sebastien Nuttinck ,  Sang-Hyun Woo ,  Jong-Han Kim ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC分类号： H03H11/00

CPC分类号： H03H11/50 ,  H03H11/48

摘要： An active inductor capable of tuning a self-resonant frequency, an inductance, a Q factor, and a peak Q frequency by applying a tunable feedback resistor to a cascode-grounded active inductor is disclosed. The tunable active inductor includes a first transistor having a source connected to a power supply voltage and a gate connected to first bias voltage; a second transistor having a drain connected to a drain of the first transistor and a gate connected to a second bias voltage; a third transistor having a drain connected to a source of the second transistor and a source connected to a ground voltage; a fourth transistor having a drain connected to a gate of the third transistor, a source connected to the ground voltage and a gate connected to a third bias voltage; a fifth transistor having a source connected to the drain of the fourth transistor and a drain connected to the power supply voltage.

摘要翻译： 公开了一种通过将可调谐反馈电阻器施加到共源共栅接地有源电感器来调谐自谐振频率，电感，Q因子和峰值Q频率的有源电感器。 可调谐有源电感器包括具有连接到电源电压的源极和连接到第一偏置电压的栅极的第一晶体管; 第二晶体管，具有连接到所述第一晶体管的漏极的漏极和连接到第二偏置电压的栅极; 具有连接到所述第二晶体管的源极的漏极和连接到接地电压的源极的第三晶体管; 具有连接到第三晶体管的栅极的漏极的第四晶体管，连接到接地电压的源极和连接到第三偏置电压的栅极; 第五晶体管，其源极连接到第四晶体管的漏极，漏极连接到电源电压。

公开(公告)号：US20050225397A1

公开(公告)日：2005-10-13

申请号：US11088591

申请日：2005-03-24

申请人： Rahul Bhatia ,  Sang-Hyun Woo ,  Ji-Hoon Bang ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

发明人： Rahul Bhatia ,  Sang-Hyun Woo ,  Ji-Hoon Bang ,  Seong-Soo Lee ,  Chang-Ho Lee ,  Joy Laskar

IPC分类号： H04B1/40 ,  H03F3/191 ,  H03F3/68 ,  H04B1/18

CPC分类号： H03F3/191 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/7209 ,  H04B1/18

摘要： Provided is a multiband low noise amplifier including a first transistor, an input matching circuit, and a first capacitor. The first transistor includes a collector electrically connected to a first power supply, a grounded emitter, and a base connected to the other end of a first inductor having one end as an input end of the low noise amplifier. The input matching circuit is connected between the collector and the base of the first transistor. The first capacitor connected to the collector of the first transistior. The input matching circuit includes a varactor. The input matching circuit includes a second capacitor connected to the varactor. The input matching circuit includes a first resistor connected to the varactor. In the multiband low noise amplifier, a varactor having a variable capacitance is installed at an input end, thereby easily performing band switching through bias voltage control by a small amount and minimizing noises that may be caused by a control signal.

摘要翻译： 提供了一种包括第一晶体管，输入匹配电路和第一电容器的多频带低噪声放大器。 第一晶体管包括电连接到第一电源，接地发射极和与第一电感器的另一端连接的基极的集电极，第一电感器的一端作为低噪声放大器的输入端。 输入匹配电路连接在第一晶体管的集电极和基极之间。 第一个电容连接到第一个transistior的收集器。 输入匹配电路包括变容二极管。 输入匹配电路包括连接到变容二极管的第二电容器。 输入匹配电路包括连接到变容二极管的第一电阻器。 在多频带低噪声放大器中，具有可变电容的变容二极管安装在输入端，从而通过少量的偏置电压控制容易地执行频带切换并且最小化可能由控制信号引起的噪声。

公开(公告)号：US06944436B2

公开(公告)日：2005-09-13

申请号：US10216899

申请日：2002-08-13

申请人： Sang-hyun Woo ,  Sang-min Nam

发明人： Sang-hyun Woo ,  Sang-min Nam

IPC分类号： H04B1/16 ,  H04B1/04 ,  H04B1/30 ,  H04B1/10 ,  H04B15/06

CPC分类号： H04B1/30 ,  H01L2224/16227 ,  H01L2224/16235 ,  H01L2924/0002 ,  H01L2924/15192 ,  H01L2924/19105 ,  H01L2924/00

摘要： A direct conversion transceiver capable of reducing a DC offset, using a multi-chip module is provided. In the transceiver, a mixer and an element constituting a local oscillator are positioned above a shielding ground surface, and an interconnection connecting the mixer and the element constituting the local oscillator are positioned below the shielding ground surface. The transceiver is formed as a multi-chip module and thus its size is not bigger than a one-chip direct conversion receiver and advantageous in that its size and manufacturing costs are less than a general direct conversion receiver that additionally includes a DC offset cancellation circuit or an off-chip type oscillator for reducing a DC offset.

摘要翻译： 提供了一种使用多芯片模块来减少DC偏移的直接转换收发器。 在收发器中，混合器和构成本地振荡器的元件位于屏蔽地表面上方，并且连接混合器和构成本地振荡器的元件的互连件位于屏蔽地表面下方。 收发器形成为多芯片模块，因此其尺寸不大于单芯片直接转换接收机，并且其优点在于其尺寸和制造成本小于通用直接转换接收机，其另外包括DC偏移消除电路 或用于减小DC偏移的片外型振荡器。

公开(公告)号：US08207470B2

公开(公告)日：2012-06-26

申请号：US12547163

申请日：2009-08-25

申请人： Hyeong-Tag Jeon ,  Sang-Hyun Woo ,  Hyung-Chul Kim ,  Chin-Wook Chung

发明人： Hyeong-Tag Jeon ,  Sang-Hyun Woo ,  Hyung-Chul Kim ,  Chin-Wook Chung

IPC分类号： B23K10/00

CPC分类号： H01J37/32532 ,  H01J37/32082 ,  H01J37/32357

摘要： Provided is an apparatus for generating remote plasma, which can improve thin-film quality by preventing an arc at a bias electrode. The apparatus includes a radio frequency (RF) electrode installed inside an upper portion of a chamber, a bias electrode installed apart from the RF electrode, and including a plurality of through holes through which plasma passes, wherein a bias power is supplied to the bias electrode, a plasma generating unit formed between the RF electrode and the bias electrode, wherein a plasma gas is supplied to the plasma generating unit, and a ground electrode installed under and spaced apart from the bias electrode, and including plasma through holes corresponding to the through holes of the bias electrode, wherein a pulsed DC bias of a second voltage level, which has a first voltage level periodically, is applied to the bias electrode.

摘要翻译： 提供一种用于产生远程等离子体的装置，其可以通过防止偏置电极处的电弧来提高薄膜质量。 该装置包括安装在室的上部内的射频（RF）电极，与RF电极分开安装的偏置电极，并且包括多个通过等离子体通过的通孔，其中偏置功率被提供给偏置 电极，形成在RF电极和偏置电极之间的等离子体产生单元，其中等离子体气体被供应到等离子体产生单元，以及接地电极，安装在偏置电极之下并与偏置电极隔开，并且包括对应于等离子体的等离子体通孔 偏置电极的通孔，其中周期性地具有第一电压电平的第二电压电平的脉冲DC偏压施加到偏置电极。

公开(公告)号：US07449934B2

公开(公告)日：2008-11-11

申请号：US11585465

申请日：2006-10-24

申请人： Sang-Hyun Woo ,  Jin-Sung Park ,  Chang-Ho Lee ,  Joy Laskar

发明人： Sang-Hyun Woo ,  Jin-Sung Park ,  Chang-Ho Lee ,  Joy Laskar

IPC分类号： G06F7/44

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

摘要： Provided is a mixer for use in a direct conversion receiver. The mixer includes Field Effect Transistors (FETs), a current source (IBias), two load resistors (RLoad), another FET, and two inductors L1 and L2. The FET M21 constitutes a current bleeding circuitry and the other components except for the two inductors L1 and L2 constitute a so-called Gilbert cell mixer.

摘要翻译： 提供一种用于直接转换接收机的混频器。 混频器包括场效应晶体管（FET），电流源（IBias），两个负载电阻（RLoad），另一个FET和两个电感器L 1和L 2。 FET M 21构成电流泄放电路，除了两个电感器L 1和L 2之外的其它部件构成所谓的吉尔伯特细胞混合器。