公开(公告)号：KR1020080056043A

公开(公告)日：2008-06-20

申请号：KR1020060128542

申请日：2006-12-15

Applicant: 한국과학기술원

Inventor： 홍성철 ,  김철영 ,  박종배 ,  김정호

IPC: H03H9/64

CPC classification number: H03H9/64 ,  H01L23/13 ,  H01L23/3677 ,  H01L23/3735 ,  H03H2001/0085

Abstract: A package structure of an LTCC(Low Temperature Co-fired Ceramic) module is provided to minimize the size thereof by stacking a dummy cavity layer and a PCB substrate through a BGA(Ball Grid Array) process. A package structure of an LTCC(Low Temperature Co-fired Ceramic) module includes an RF(Radio Frquency) module(200), a dummy cavity layer(210), and a PCB(Printed Circuit Board) substrate(220). The RF module includes a transceiver circuit on one surface thereof and a patch antenna on the other surface thereof through an LTCC process. The RF module, the dummy cavity layer, and the PCB substrate are sequentially stacked. The stacked RF module, dummy cavity layer, and PCB substrate are connected with one another through a BGA(Ball Grid Array) process.

Abstract translation: 提供LTCC（低温共烧陶瓷）模块的封装结构，以通过BGA（球栅阵列）工艺堆叠虚空腔层和PCB衬底来最小化其尺寸。 LTCC（低温共烧陶瓷）模块的封装结构包括RF（无线电频率）模块（200），虚拟空腔层（210）和PCB（印刷电路板）衬底（220）。 RF模块通过LTCC工艺在其一个表面上包括收发器电路和在另一表面上的贴片天线。 RF模块，虚拟空腔层和PCB基板依次层叠。 层叠的RF模块，虚拟空腔层和PCB衬底通过BGA（球栅阵列）工艺相互连接。

公开(公告)号：KR1020080045890A

公开(公告)日：2008-05-26

申请号：KR1020060115133

申请日：2006-11-21

Applicant: 한국과학기술원

Inventor： 홍성철 ,  박창근

IPC: H03F3/20

CPC classification number: H03F3/602 ,  H01P5/16 ,  H03F1/0205 ,  H03F1/565 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/318 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2200/543

Abstract: A power amplifier using a power combiner is provided to enhance efficiency thereof by using a transmission line transformer for coupling power and reducing power loss. A first and second amplifier terminals(603,604) for amplifying high frequencies of different phases are connected to a first and second transmission lines of a first transmission line transformer. A third and fourth amplifier terminals(605,606) for amplifying high frequencies of different phases are connected to a third and fourth transmission lines of a second transmission line transformer. The second transmission line of the first transmission line transformer is connected to the third transmission line of the second transmission line transformer through a grounding part(505). The first transmission line of the first transmission line transformer is connected to a fifth transmission line of a third transmission line transformer. The fourth transmission line of the second transmission line transformer is connected to a sixth transmission line of the third transmission line transformer. The fifth transmission line of the third transmission line transformer is connected to the grounding part through an output resistor. The sixth transmission line of the third transmission line transformer is connected to the grounding part.

Abstract translation: 提供使用功率合成器的功率放大器，以通过使用用于耦合功率的传输线变压器和降低功率损耗来提高其效率。 用于放大不同相位的高频的第一和第二放大器端子（603,604）连接到第一传输线变压器的第一和第二传输线。 用于放大不同相位的高频的第三和第四放大器端子（605,606）连接到第二传输线变压器的第三和第四传输线。 第一传输线变压器的第二传输线通过接地部分连接到第二传输线变压器的第三传输线。 第一传输线变压器的第一传输线连接到第三传输线变压器的第五传输线。 第二传输线变压器的第四传输线连接到第三传输线变压器的第六传输线。 第三传输线变压器的第五传输线通过输出电阻连接到接地部分。 第三传输线变压器的第六传输线连接到接地部分。

公开(公告)号：KR100821618B1

公开(公告)日：2008-04-16

申请号：KR1020070044553

申请日：2007-05-08

Applicant: 한국과학기술원

Inventor： 홍성철 ,  박창근 ,  이유미

IPC: H01L27/02

Abstract: An inductor formed in a semiconductor integrated circuit is provided to increase an inductance value and a quality factor by winding metal lines in several strands. A first insulator layer(20) is formed on a semiconductor substrate(10), and a first lower metal line(300) and a second lower metal line are formed on the first insulator layer. A second insulator layer(30) is formed to cover the first and second lower metal lines. An upper metal line(301) is formed on the second insulator layer, and has a first metal line(310) of one strand and a second metal line(312) of two strands. A first terminal(Port1) and a second terminal are formed on the second insulator layer, and are connected to the first and second lower metal lines, respectively, via a first via contact(302) and a second via contact.

Abstract translation: 提供了形成在半导体集成电路中的电感器，以通过以多股线缠绕金属线来增加电感值和品质因数。 第一绝缘体层（20）形成在半导体衬底（10）上，并且在第一绝缘体层上形成第一下金属线（300）和第二下金属线。 形成第二绝缘体层（30）以覆盖第一和第二下部金属线。 上金属线（301）形成在第二绝缘体层上，并且具有一条线的第一金属线（310）和两条线的第二金属线（312）。 第一端子（端口1）和第二端子形成在第二绝缘体层上，并且分别经由第一通孔接触件（302）和第二通孔接头连接到第一和第二下部金属线路。

公开(公告)号：KR1020070105633A

公开(公告)日：2007-10-31

申请号：KR1020060038027

申请日：2006-04-27

Applicant: 한국과학기술원

Inventor： 홍성철 ,  이동호 ,  이경애

IPC: H01F38/08 ,  H01F38/00 ,  H01P3/08

Abstract: A transmission line transformer suitable to miniaturization is provided to reduce the whole area by serially connecting an inductor or parallel connecting a capacitor to a transmission line, and to reduce parasitic resistance by using the short transmission line. A transmission line transformer suitable to miniaturization includes first to fourth transformed transmission lines(120,130,140,150). The first transformed transmission line is composed of a first transmission line(122), and a first capacitor(121) connected to the first transmission line in parallel. The second transformed transmission line is composed of a second transmission line(132), and a first inductor(131) connected to the second transmission line in series. The third transformed transmission line is composed of a third transmission line(143), a second inductor(141) connected to the third transmission line in series, and a second capacitor(142) connected to both ends of the third transmission line in parallel. The fourth transformed transmission line is composed of a fourth transmission line(153), a third capacitor(152) connected to the fourth transmission line in parallel, and a third inductor(151) inserted between the third capacitor and the fourth transmission line. The first to fourth transmission lines are shorter than a conventional transmission line.

Abstract translation: 提供适于小型化的传输线变压器，以通过串联连接电感器或将电容器并联连接到传输线来减小整个面积，并通过使用短传输线路来减小寄生电阻。 适于小型化的传输线变压器包括第一至第四变换传输线（120,130,140,​​150）。 第一变换传输线由第一传输线（122）和与第一传输线并联连接的第一电容器（121）组成。 第二变换传输线由第二传输线（132）和与第二传输线串联连接的第一电感器（131）组成。 第三变换传输线由串联连接到第三传输线的第三传输线（143），第二电感器（141）和并联连接到第三传输线两端的第二电容器（142）组成。 第四变换传输线由并联连接到第四传输线的第四传输线（153），第三电容器（152）和插入在第三电容器和第四传输线之间的第三电感器（151）组成。 第一至第四传输线比传统传输线短。

公开(公告)号：KR1020070101723A

公开(公告)日：2007-10-17

申请号：KR1020060033237

申请日：2006-04-12

Applicant: 한국과학기술원

Inventor： 박창근 ,  홍성철

IPC: H03F3/20

CPC classification number: H03F3/72 ,  H03F1/0205 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/24 ,  H03F3/45188 ,  H03F3/604 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2203/45318 ,  H03F2203/45481 ,  H03F2203/45731 ,  H03F2203/7239

Abstract: A power amplifier is provided to increase an operation range of the power amplifier by directly outputting output power from a driving amplifier stage using a transmission line transformer. A power amplifier includes a driving amplifier stage(503) and a power amplifier stage(502). Each of the power and driving amplifier stages includes a matching circuit and a power coupler. An output signal from the driving amplifier stage drives the power amplifier stage. The matching circuit and the power coupler is a transmission line transformer(501), which includes a secondary transmission line and a primary transmission line. The secondary transmission line is connected to an output terminal. The primary transmission lines are arranged at both sides of the secondary transmission line and have different parasitic components. The driving amplifier stage is connected to one end of the primary transmission line, while the power amplifier stage is connected to the other end of the primary transmission line.

Abstract translation: 提供功率放大器以通过使用传输线变压器直接从驱动放大器级输出输出功率来增加功率放大器的操作范围。 功率放大器包括驱动放大器级（503）和功率放大级（502）。 功率和驱动放大器级中的每一个包括匹配电路和功率耦合器。 来自驱动放大器级的输出信号驱动功率放大器级。 匹配电路和功率耦合器是包括二次传输线和一次传输线的传输线变压器（501）。 二次传输线连接到输出端子。 主传输线布置在二次传输线的两侧并且具有不同的寄生分量。 驱动放大器级连接到主传输线的一端，而功率放大器级连接到主传输线的另一端。

公开(公告)号：KR100748992B1

公开(公告)日：2007-08-14

申请号：KR1020060096949

申请日：2006-10-02

Applicant: 한국과학기술원

Inventor： 홍성철 ,  김철영

IPC: G01S13/74

Abstract: A circularly polarized radar device is provided to prevent the waste of power by decreasing the loss of transmitted power and polarization loss, and to make the size small by reducing the influence of interference although two radar devices face each other. A circularly polarized radar device for obtaining a baseband signal by removing a transmitted leak signal without the loss of transmitted power is composed of a signal generator(301) generating two signals with phase difference of 180 degrees; first and second coupler blocks(302a,302b) receiving and transmitting two signals generated from the signal generator, to an antenna(403) and a mixer(106); the circularly polarized antenna receiving the signals from the first and second coupler blocks; a 90 degree-phase delay lag block(404) connected between the second coupler block and the input side of the antenna; a power combination unit(303) combining received signals input through the antenna and removing the received signal leaking from the first and second coupler blocks to a receiving stage; and the mixer receiving the signals from the first and second coupler blocks and mixing LO signals output from the first and second coupler blocks and a signal output from the power combination unit.

Abstract translation: 提供圆偏振雷达装置以通过减少发射功率损失和极化损失来防止功率浪费，并且尽管两个雷达装置彼此面对，但通过减小干扰的影响使尺寸变小。 一种圆偏振雷达装置，用于通过消除发送的泄漏信号而不损失发射功率来获得基带信号，包括：信号发生器（301），其产生具有180度相位差的两个信号; 第一和第二耦合器块（302a，302b），接收并发送从信号发生器产生的两个信号到天线（403）和混频器（106）; 圆极化天线接收来自第一和第二耦合器块的信号; 连接在第二耦合器块和天线的输入侧之间的90度相位延迟滞后块（404） 功率组合单元（303），将通过天线输入的接收信号组合并将从第一和第二耦合器块泄漏的接收信号去除到接收级; 并且混频器接收来自第一和第二耦合器块的信号并混合从第一和第二耦合器块输出的LO信号和从功率组合单元输出的信号。

公开(公告)号：KR100660118B1

公开(公告)日：2006-12-21

申请号：KR1020050028505

申请日：2005-04-06

Applicant: 한국과학기술원

Inventor： 홍성철 ,  이동호 ,  이경애

IPC: H03F3/45 ,  H03F1/30 ,  H03F1/02

CPC classification number: H03F3/45 ,  H03F2203/45361

Abstract: 본 발명은 차동증폭장치와 이의 컴퓨터 시뮬레이션 모델 생성 방법에 관한 것으로써 증폭장치가 열에 의해 성능 저하가 발생되거나 파괴되는 열효과 현상을 방지하면서도 다른 성능은 개선 또는 유지시킬 수 있도록 단위 트랜지스터의 차동구조에 밸러스트 저항을 사용하여 열적으로 안정되면서 동시에 고이득, 고효율, 고선형성, 광대역폭 특성을 얻을 수 있을 뿐만 아니라 차동 모드에서 이미터의 기생(Parasitic) 저항이나 비아(Via)나 본딩 와이어(Bonding Wire) 등이 증폭장치에 미치는 영향도 줄어들어 설계가 용이해지며, 전체 크기가 작고 주파수 대역폭은 넓어지는 이점이 있다.
Power amplifier, Differential amplifier, Ballast, Hetero junction Bipolar Transistor, Bipolar Junction Transistor, 전력증폭기, 차동증폭기, 밸러스트 저항, 바이폴라

公开(公告)号：KR100656341B1

公开(公告)日：2006-12-13

申请号：KR1020050015437

申请日：2005-02-24

Applicant: 한국과학기술원

Inventor： 김윤석 ,  홍성철

IPC: H03F3/34

CPC classification number: H03F3/189 ,  H03F1/56

Abstract: 본 발명은 변압기의 변압비 변경을 이용한 고출력 증폭기에 관한 것으로서, 고출력 증폭기의 출력단에 변압기를 사용하고 이 변압기의 변압비를 조절하여 신호의 왜곡현상과 효율이 낮아지는 문제없이 부하저항을 조절함으로써 동작영역과 효율을 높일 수 있는 이점이 있다.
Power amplifier, Transformer, Variable load, 부하저항, 동작영역, 변압비

公开(公告)号：KR1020060112539A

公开(公告)日：2006-11-01

申请号：KR1020050035096

申请日：2005-04-27

Applicant: 한국과학기술원

Inventor： 박창근 ,  홍성철

IPC: H03F1/02 ,  H03F3/20

CPC classification number: H03F1/0277

Abstract: A power amplifier with automatically switching function is provided to vary output by operating whole parts of a circuit by turning on in case of requiring high power and stopping a portion of the circuit by turning off in case of requiring low power according to a magnitude of an envelop signal. In a power amplifier consisting of a plurality of power amplifying terminals receiving an envelop signal with automatically switching function, a plurality of switching circuits turns on/off the plurality of power amplifying terminals, wherein the switching circuits mounted at a front terminal of each of the power amplifying terminals or at each of the power amplifying terminals is individually switched in accordance with a magnitude of the envelop signal inputted by the respective reference voltages.

Abstract translation: 具有自动切换功能的功率放大器被提供以通过在需要高功率的情况下通过接通来操作电路的整个部分来改变输出，并且在需要低功率的情况下通过关闭来停止一部分电路 包络信号。 在由多个功率放大端子组成的功率放大器中，其接收具有自动切换功能的包络信号，多个开关电路使多个功率放大端子接通/断开，其中安装在各个功率放大端子的前端的开关电路 功率放大端子或每个功率放大端子根据由各个参考电压输入的包络信号的大小单独切换。

公开(公告)号：KR1020060094340A

公开(公告)日：2006-08-29

申请号：KR1020050015437

申请日：2005-02-24

Applicant: 한국과학기술원

Inventor： 김윤석 ,  홍성철

IPC: H03F3/34

CPC classification number: H03F3/189 ,  H03F1/56

Abstract: 본 발명은 변압기의 변압비 변경을 이용한 고출력 증폭기에 관한 것으로서, 고출력 증폭기의 출력단에 변압기를 사용하고 이 변압기의 변압비를 조절하여 신호의 왜곡현상과 효율이 낮아지는 문제없이 부하저항을 조절함으로써 동작영역과 효율을 높일 수 있는 이점이 있다.
Power amplifier, Transformer, Variable load, 부하저항, 동작영역, 변압비

Abstract translation: 使用本发明的变压器的一个可变压力比的变化涉及到高功率放大器中，通过使用变压器向大功率放大器的输出端子和调整负载电阻和调节变压器的没有任何问题和失真和信号的效率的变压器比的操作被降低 有一个优点是面积和效率可以提高。