公开(公告)号：US08378744B2

公开(公告)日：2013-02-19

申请号：US13279953

申请日：2011-10-24

Applicant: Bon Hoon Koo ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

Inventor： Bon Hoon Koo ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

IPC: H03F1/14

CPC classification number: H03F1/223 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/516 ,  H03F2200/541 ,  H03F2203/7221 ,  H03F2203/7236

Abstract: There is provided a multi-mode power amplifier operable in a low power mode having a preset power range and in a high power mode having a power range higher than the power range of the low power mode. The multi-mode power amplifier includes: a high power amplifying unit including at least one cascode amplifier to amplify an input signal to a high power level having a preset power range; a low power amplifying unit sharing a common source node of the at least one cascode amplifier to amplify the input signal to a low power level having a power range lower than the high power level; and a coupling unit coupling a transfer path of a signal output from the high power amplifying unit and a transfer path of a signal output from the low power amplifying unit to each other.

Abstract translation: 提供了一种可在具有预设功率范围的低功率模式下工作的多模式功率放大器和功率范围高于低功率模式的功率范围的高功率模式。 多模式功率放大器包括：高功率放大单元，包括至少一个共源共栅放大器，用于将输入信号放大到具有预设功率范围的高功率电平; 共享所述至少一个共源共栅放大器的公共源节点的低功率放大单元，以将所述输入信号放大到功率范围低于所述高功率电平的低功率电平; 以及耦合单元，耦合从高功率放大单元输出的信号的传输路径和从低功率放大单元输出的信号的传送路径。

公开(公告)号：US08354883B2

公开(公告)日：2013-01-15

申请号：US13024144

申请日：2011-02-09

Applicant: Bon Hoon Koo ,  Ki Yong Son ,  Song Cheol Hong ,  Gyu Suck Kim ,  Yoo Sam Na

Inventor： Bon Hoon Koo ,  Ki Yong Son ,  Song Cheol Hong ,  Gyu Suck Kim ,  Yoo Sam Na

IPC: H03G3/20

CPC classification number: H03F1/0266 ,  H03F3/195 ,  H03F2200/105 ,  H03F2200/555

Abstract: There is provided a power amplifier capable of supplying variable bias to an amplifier circuit by accurately transferring the envelope components of an input signal during the supply of active bias power to the amplifier circuit. The power amplifier includes: an envelope detector detecting an envelope of an input signal; a bias power generator including at least one P-type MOSFET and one N-type MOSFET connected to each other in an inverter manner between a driving power terminal supplying driving power having a preset voltage level and a reference bias power terminal supplying preset reference bias power to generate bias power varied according to detection results from the envelope detector; and an amplifier amplifying the input signal according to the bias power level from the bias power generator.

Abstract translation: 提供了一种功率放大器，其能够通过在将有源偏置功率提供给放大器电路期间精确地传送输入信号的包络分量来向放大器电路提供可变偏置。 功率放大器包括：检测输入信号的包络的包络检测器; 一个偏置功率发生器，它包括至少一个P型MOSFET和一个N型MOSFET，它们以一个反相器的方式相互连接，驱动电源端子提供具有预设电压电平的驱动电源和一个提供预设参考偏置功率的参考偏置电源端子 以产生根据来自包络检测器的检测结果而变化的偏置功率; 以及根据偏置功率发生器的偏置功率电平放大输入信号的放大器。

公开(公告)号：US20110140755A1

公开(公告)日：2011-06-16

申请号：US12852475

申请日：2010-08-07

Applicant: Song Cheol Hong ,  Bon Hyun Ku

Inventor： Song Cheol Hong ,  Bon Hyun Ku

IPC: H03L5/00 ,  H03L7/00

CPC classification number: H03H7/25

Abstract: Disclosed herein is a digital attenuator, which can improve the variation in the pass phase of the digital attenuator because the difference between parasitic components caused by the turn-on and turn-off operations of the switching transistors of the digital attenuator causes the difference between the pass phases. The digital attenuator of the present invention includes an attenuation circuit unit configured to cause a variation in a pass phase due to a difference between parasitic components caused by turn-on and turn-off operations of switching transistors, and a phase correction unit connected in parallel with the attenuation circuit unit and provided with a series resistor and a low pass filter. Accordingly, variations in pass phase can be eliminated by connecting a low pass filter, connected to series resistors, in parallel with the series switch of an attenuation circuit unit, thus eliminating the influence of the parasitic components.

Abstract translation: 这里公开了一种数字衰减器，其可以改善数字衰减器的通过相位的变化，因为由数字衰减器的开关晶体管的导通和关断操作引起的寄生分量之间的差异导致数字衰减器之间的差异 通过阶段 本发明的数字衰减器包括：衰减电路单元，被配置为由于由开关晶体管的导通和截止操作引起的寄生分量之间的差异导致通过相位的变化，以及并联连接的相位校正单元 与衰减电路单元并配有串联电阻和低通滤波器。 因此，通过将连接到串联电阻器的低通滤波器与衰减电路单元的串联开关并联连接，可以消除通过相位的变化，从而消除了寄生分量的影响。

公开(公告)号：US20070013582A1

公开(公告)日：2007-01-18

申请号：US11441081

申请日：2006-05-26

Applicant: Sang-wook Kwon ,  Song-cheol Hong ,  In-sang Song ,  Dong-kyun Kim ,  Jeong-geun Kim

Inventor： Sang-wook Kwon ,  Song-cheol Hong ,  In-sang Song ,  Dong-kyun Kim ,  Jeong-geun Kim

IPC: G01S13/00

CPC classification number: H03D7/125 ,  G01S7/026 ,  G01S7/034 ,  H01Q9/0435 ,  H01Q21/24

Abstract: A radar system includes a transmitter stage for generating a certain transmission signal; a circularly polarized antenna for emitting the transmission signal in a form of a circularly polarized signal, and receiving a reflection signal; a polarizer for isolating the reflection signal received from the circularly polarized antenna from the transmission signal, and outputting the reflection signal to a next stage; and a receiver stage for receiving the reflection signal output from the polarizer, converting the reflection signal into a signal of a certain frequency by using as a certain mixer switching signal the leakage signal leaking from the transmitter stage, and outputting the converted reflection signal. Therefore, the high-sensitivity radar system can be built in a compact size.

Abstract translation: 雷达系统包括用于产生某一传输信号的发射机级; 圆极化天线，用于以圆偏振信号的形式发射发送信号，并接收反射信号; 偏振器，用于将从圆极化天线接收的反射信号与发送信号隔离，并将反射信号输出到下一级; 以及接收器级，用于接收从偏振器输出的反射信号，通过使用作为特定混频器切换信号将反射信号转换成特定频率的信号，从发射器级泄漏泄漏信号，并输出转换后的反射信号。 因此，高灵敏度雷达系统可以构建成紧凑的尺寸。

公开(公告)号：US5796886A

公开(公告)日：1998-08-18

申请号：US669691

申请日：1996-06-24

Applicant: Song-Cheol Hong ,  Doo-Young Ha

Inventor： Song-Cheol Hong ,  Doo-Young Ha

IPC: H01L31/12 ,  G02B6/12 ,  G02B6/122 ,  G02B6/28 ,  G02B6/35

CPC classification number: G02B6/3502 ,  G02B6/122 ,  G02B6/3536 ,  G02B2006/12145 ,  G02B2006/12147 ,  G02B2006/2865 ,  G02B6/3546 ,  G02B6/3566 ,  G02B6/357 ,  G02B6/3596

Abstract: The present invention relates to an optical coupler 2.times.2 optical switch which can efficiently shorten the length of device by employing a cantilever and a movable optical waveguide and a method for optical switching with the optical coupler 2.times.2 optical switch. An optical coupler 2.times.2 optical switch of the present invention comprises: an optical coupler in which two fixed optical waveguides are provided on a substrate; an optical waveguide positioned between the fixed optical waveguides, which is moved up and down; and, a cantilever which is linked to the optical waveguide to move the optical waveguide up and down by the voltage applied to electrodes. Since the coupling length of the optical coupler(22) is changed depending on the distance between the fixed optical waveguides(21, 21') and the optical waveguide(23), length(D) of the optical, coupler(22) can be shortened to a great extent compared to the prior art optical coupler 2.times.2 optical switch, and the insertion loss of the device in the construction of optical communication system can be lowered significantly and optical switching can be carried out with a good performance.

Abstract translation: 本发明涉及一种光耦合器2x2光开关，其可以通过采用悬臂和可移动光波导来有效地缩短装置的长度，以及用光耦合器2×2光开关进行光切换的方法。 本发明的光耦合器2x2光开关包括：光耦合器，其中两个固定的光波导设置在基板上; 位于固定光波导之间的光波导，其上下移动; 以及连接到光波导以通过施加到电极的电压来上下移动光波导的悬臂。 由于光耦合器（22）的耦合长度根据固定光波导（21,21'）和光波导（23）之间的距离而改变，所以光耦合器（22）的长度（D）可以是 与现有技术的光耦合器2x2光开关相比缩短了很大程度，并且可以显着降低光通信系统中的设备的插入损耗，并且可以以良好的性能进行光切换。

公开(公告)号：US5747865A

公开(公告)日：1998-05-05

申请号：US802012

申请日：1997-02-18

Applicant: Dong-Wook Kim ,  Jeong-Hwan Son ,  Song-Cheol Hong ,  Yeong-Se Kwon

Inventor： Dong-Wook Kim ,  Jeong-Hwan Son ,  Song-Cheol Hong ,  Yeong-Se Kwon

IPC: H01L29/93 ,  H01L29/70 ,  H01L29/861

CPC classification number: H01L29/93

Abstract: An area-variable varactor diode is disclosed, in which the capacitance can be arbitrarily varied under an applied bias voltage. The area-variable varactor diode is characterized in that, in order to ensure freedom to designing the epi-layer, to obtain the desired capacitance characteristics, and to facilitate the integration with other elements, a steeply varied depletion layer area is provided through a variation of the surface layout area, and thus, varied capacitance characteristics are obtained. In steeply varying the area of the depletion layer, an etching of the active layer, a selective epi-layer growth, and an ion implantation are carried out or a combination of them is carried out. The capacitance characteristics are varied in accordance with the pattern of the mask, and therefore, a restriction is not imposed on the epi-layer, with the result that an integration with other elements becomes easy. Further, because the mask pattern is resorted to, it becomes possible to manufacture a varactor diode which shows a capacitance variation of a strong non-linearity and a large capacitance variation rate.

Abstract translation: 公开了一种面积可变变容二极管，其中电容可以在施加的偏压下任意变化。 面积可变变容二极管的特征在于，为了确保设计外延层的自由度，为了获得期望的电容特性，并且为了便于与其它元件的集成，通过变化来提供急剧变化的耗尽层面积 的表面布局面积，从而获得变化的电容特性。 在急剧变化耗尽层的面积时，进行活性层的蚀刻，选择性外延生长和离子注入，或者进行它们的组合。 电容特性根据掩模的图案而变化，因此不对外延层施加限制，结果是与其它元件的集成变得容易。 此外，由于采用了掩模图案，所以可以制造显示强非线性的电容变化和大的电容变化率的变容二极管。

公开(公告)号：US08344824B2

公开(公告)日：2013-01-01

申请号：US12768432

申请日：2010-04-27

Applicant: Yu Sin Kim ,  Song Cheol Hong ,  Sang Hyun Baek ,  Youn Suk Kim

Inventor： Yu Sin Kim ,  Song Cheol Hong ,  Sang Hyun Baek ,  Youn Suk Kim

IPC: H03H7/38

CPC classification number: H03H11/36 ,  H03F1/0288 ,  H03H7/18 ,  H03H7/38

Abstract: Disclosed herein is an asymmetric power divider. The asymmetric power divider includes a power dividing unit, a first matching network, and a second matching network. The power dividing unit supplies different amounts of power to a carrier amplifier and a peaking amplifier, which are connected in parallel. The first matching network is connected between the power dividing unit and the carrier amplifier so as to perform impedance matching between the power dividing unit and the carrier amplifier. The second matching network is connected between the power dividing unit and the peaking amplifier so as to perform impedance matching between the power dividing unit and the peaking amplifier.

Abstract translation: 本文公开了一种不对称功率分配器。 不对称功率分配器包括功率分配单元，第一匹配网络和第二匹配网络。 功率分配单元向并联的载波放大器和峰化放大器提供不同的功率量。 第一匹配网络连接在功率分配单元和载波放大器之间，以便在功率分配单元和载波放大器之间执行阻抗匹配。 第二匹配网络连接在功率分配单元和峰化放大器之间，以便在功率分配单元和峰化放大器之间执行阻抗匹配。

公开(公告)号：US20120299657A1

公开(公告)日：2012-11-29

申请号：US13279953

申请日：2011-10-24

Applicant: Bon Hoon KOO ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

Inventor： Bon Hoon KOO ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

IPC: H03F3/68 ,  H03F1/22

CPC classification number: H03F1/223 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/516 ,  H03F2200/541 ,  H03F2203/7221 ,  H03F2203/7236

Abstract: There is provided a multi-mode power amplifier operable in a low power mode having a preset power range and in a high power mode having a power range higher than the power range of the low power mode. The multi-mode power amplifier includes: a high power amplifying unit including at least one cascode amplifier to amplify an input signal to a high power level having a preset power range; a low power amplifying unit sharing a common source node of the at least one cascode amplifier to amplify the input signal to a low power level having a power range lower than the high power level; and a coupling unit coupling a transfer path of a signal output from the high power amplifying unit and a transfer path of a signal output from the low power amplifying unit to each other.

Abstract translation: 提供了一种可在具有预设功率范围的低功率模式下工作的多模式功率放大器和功率范围高于低功率模式的功率范围的高功率模式。 多模式功率放大器包括：高功率放大单元，包括至少一个共源共栅放大器，用于将输入信号放大到具有预设功率范围的高功率电平; 共享所述至少一个共源共栅放大器的公共源节点的低功率放大单元，以将所述输入信号放大到功率范围低于所述高功率电平的低功率电平; 以及耦合单元，耦合从高功率放大单元输出的信号的传输路径和从低功率放大单元输出的信号的传送路径。

公开(公告)号：US20110304395A1

公开(公告)日：2011-12-15

申请号：US13006920

申请日：2011-01-14

Applicant: Bon Hoon KOO ,  Ki Yong SON ,  Song Cheol HONG ,  Gyu Suck KIM ,  Yoo Sam NA

Inventor： Bon Hoon KOO ,  Ki Yong SON ,  Song Cheol HONG ,  Gyu Suck KIM ,  Yoo Sam NA

IPC: H03F3/45 ,  H03F3/68 ,  H03F1/22 ,  H03F3/16

CPC classification number: H03F3/195 ,  H03F1/0261 ,  H03F1/223 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45179 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/18 ,  H03F2200/451

Abstract: Disclosed is a power amplifier. A power amplifier according to an aspect of the invention may include: a first amplification section having a first N metal oxide semiconductor (MOS) amplifier and a second N MOS amplifier connected in a cascode configuration and amplifying an input signal; a second amplification section having a first P MOS amplifier and a second P MOS amplifier connected in a cascode configuration and amplifying the input signal; and a power combining section combining respective output signals of the first amplification section and the second amplification section.

Abstract translation: 公开了一种功率放大器。 根据本发明的一个方面的功率放大器可以包括：第一放大部分，具有第一N个金属氧化物半导体（MOS）放大器和以共源共极配置连接并放大输入信号的第二N个MOS放大器; 第二放大部分，具有第一P MOS放大器和以共源共享配置连接的第二P MOS放大器，并放大输入信号; 以及组合第一放大部分和第二放大部分的输出信号的功率合并部分。

公开(公告)号：US20110267194A1

公开(公告)日：2011-11-03

申请号：US12831240

申请日：2010-07-06

Applicant: Song Cheol Hong ,  Sun Bo Shim

Inventor： Song Cheol Hong ,  Sun Bo Shim

IPC: H01P5/18 ,  G08B13/14

CPC classification number: H01P5/185

Abstract: A compact directional coupler and a mobile Radio-Frequency Identification (RFID) reader transceiver system using the same. The compact directional coupler can include a primary transmission line, a secondary transmission line, and a second capacitor connected in parallel to the secondary transmission line. The coupler can further include a first capacitor connected in parallel to the primary transmission line and capacitors connected between both end of the first capacitors and the ground respectively. A mobile RFID reader transceiver system can include a transmission terminal circuit, a power amplifier, the compact directional coupler, an antenna, a low noise amplifier, and the reception terminal circuit. The system further can include a band-pass filer, and/or a power combiner to match an output terminal of the power amplifier.

Abstract translation: 一种紧凑型定向耦合器和使用其的移动射频识别（RFID）读取器收发器系统。 紧凑型定向耦合器可以包括与二次传输线并联连接的主传输线，二次传输线和第二电容器。 耦合器还可以包括并联连接到主传输线的第一电容器和分别连接在第一电容器和地的两端之间的电容器。 移动RFID读取器收发器系统可以包括传输终端电路，功率放大器，小型定向耦合器，天线，低噪声放大器和接收终端电路。 该系统还可以包括带通滤波器和/或功率组合器，以匹配功率放大器的输出端子。