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公开(公告)号：US11527996B2
公开(公告)日：2022-12-13
申请号：US17496984
申请日：2021-10-08
Inventor： Dong Hwan Shin , Dong Pil Chang , Byoung Hak Kim , Seong Mo Moon , In Bok Yom , Jun Han Lim , Jin Cheol Jeong , In Kwon Ju
Abstract: Provided is a FET resistive frequency mixing device having improved RF-LO and IF-LO isolations. The frequency mixing device includes: a field effect transistor (FET), a local oscillation matching circuit connected to a gate of the FET to transfer a local oscillation signal to the gate of the FET, a gate biasing circuit connected to the gate of the FET, a radio frequency (RF) matching circuit having a first terminal connected to a drain side of the FET and a second terminal serving as a RF terminal to receive or output a RF signal, an intermediate frequency (IF) matching circuit having a first terminal connected to the drain side of the FET and a second terminal serving as an IF terminal to receive or output an IF signal, and a series resonance circuit providing a path from the drain of the FET to ground for the local oscillation signal.
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公开(公告)号：US09419345B2
公开(公告)日：2016-08-16
申请号：US14462745
申请日：2014-08-19
Inventor： So Hyeun Yun , Chang Soo Kwak , Man Seok Uhm , In Bok Yom , Hong Yeol Lee
CPC classification number: H01Q15/16 , H01Q19/19 , H01Q19/192
Abstract: The present invention relates to a dual reflector antenna with a hybrid subreflector, and more particularly, to a dual reflector antenna with a subreflector having a structure in which an ellipse and a hyperbola are combined. An exemplary embodiment of the present invention provides a dual reflector antenna including: a main reflector; and a hybrid subreflector which faces the main reflector and has a first structure and a second structure which are combined therein.
Abstract translation: 本发明涉及一种具有混合子反射器的双反射器天线，更具体地说，涉及具有其中组合了椭圆和双曲线的结构的副反射器的双反射器天线。 本发明的示例性实施例提供一种双反射器天线，包括：主反射器; 以及面向主反射体并具有组合在其中的第一结构和第二结构的混合子反射器。
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公开(公告)号：US08970441B2
公开(公告)日：2015-03-03
申请号：US13656437
申请日：2012-10-19
Inventor： So Hyeun Yun , Hong Yeol Lee , Chang Soo Kwak , Man Seok Uhm , Jang Sup Choi , In Bok Yom
CPC classification number: H01Q21/08 , H01Q13/0275 , H01Q25/00
Abstract: Provided is an antenna apparatus which employs a small number of antenna devices and is intended to obtain a desired pattern without adjusting amplitude level and phase of each antenna device. The antenna apparatus includes a first ridge horn antenna, and a second ridge horn antenna spaced apart from the first ridge horn antenna by a determined distance. Here, a multi-beam pattern is generated using a third-order mode beam pattern of a synthetic beam obtained by synthesizing beams respectively radiated from the first and second ridge horn antennas. Accordingly, the antenna apparatus can be simplified, and a desired multi-beam pattern can be obtained without adjusting signal level and phase of each antenna device. Also, by employing the ridge horn antennas as array devices, the antenna apparatus can be used in a wide frequency band.
Abstract translation: 提供一种使用少量天线装置的天线装置，其目的是在不调整每个天线装置的振幅电平和相位的情况下获得期望的模式。 天线装置包括第一脊喇叭天线和与第一脊喇叭天线间隔一定距离的第二脊喇叭天线。 这里，使用通过合成从第一和第二脊喇叭天线辐射的光束获得的合成束的三阶模式波束图来生成多波束图案。 因此，可以简化天线装置，并且可以在不调整每个天线装置的信号电平和相位的情况下获得期望的多波束图案。 此外，通过使用脊喇叭天线作为阵列装置，天线装置可以在宽频带中使用。
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公开(公告)号：US09614265B2
公开(公告)日：2017-04-04
申请号：US14450374
申请日：2014-08-04
Inventor： Chang Soo Kwak , Youn Sub Noh , Man Seok Uhm , So Hyeun Yun , Hong Yeol Lee , In Bok Yom
CPC classification number: H01P1/207 , H01P1/205 , H01P1/2053 , H01P7/06
Abstract: A tunable filter device that changes a central frequency and a bandwidth is provided. The tunable filter device may include a body forming a cavity together with a cover, a resonator attached to or integrally formed on a lower surface of the cavity, a frequency-tuning element including a head and a shaft, the shaft passed through the cover and inserted in the resonator, and a cam disposed on the head to contact the head, wherein an insertion length of the shaft is controlled by the cam.
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公开(公告)号：US20170033424A1
公开(公告)日：2017-02-02
申请号：US15140648
申请日：2016-04-28
Inventor： Chang Soo KWAK , Man Seok Uhm , In Bok Yom , So Hyeun Yun , Hong Yeol Lee
IPC: H01P1/208
CPC classification number: H01P1/2086
Abstract: A dual-mode filter is provided. A filter may include a cylindrical cavity configured to implement resonance modes with a plurality of different resonant frequencies, and a plurality of slot irises formed on a side of the cylindrical cavity, and the plurality of slot irises may be arranged asymmetrically to each other with respect to the cylindrical cavity.
Abstract translation: 提供双模式滤波器。 滤波器可以包括被配置为实现具有多个不同谐振频率的谐振模式的圆柱形腔，以及形成在圆柱形腔的一侧上的多个狭槽虹膜，并且多个狭槽虹膜可以相对于彼此不对称地布置 到圆柱形腔。
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Patent Agency Ranking
公开(公告)号：US09024702B2
公开(公告)日：2015-05-05
申请号：US13895498
申请日：2013-05-16
Inventor： Dong Hwan Shin , Seong Mo Moon , In Bok Yom
CPC classification number: H03H11/245 , H03H7/25
Abstract: Disclosed is a low phase shift voltage variable attenuator. The low phase shift voltage variable attenuator may include: a first directional coupler including a first input terminal in which a signal is input, a first isolation terminal connected to a ground power source through a termination resistor, a first coupling terminal, and a first through terminal; a second directional coupler including a second input terminal through which an attenuated signal, which is the attenuated input input signal, is output, a second isolation terminal connected to a ground power source through a termination resistor, a second coupling terminal, and a second through terminal; and a signal attenuating unit connected to the first coupling terminal, the first through terminal, the second coupling terminal, and the second through terminal, and configured to attenuate a signal transmitted through the first directional coupler to transmit the attenuated signal to the second directional coupler.
Abstract translation: 公开了一种低相移电压可变衰减器。 低相移电压可变衰减器可以包括：第一定向耦合器，包括其中输入信号的第一输入端，通过终端电阻连接到地电源的第一隔离端，第一耦合端和第一通 终奌站; 第二定向耦合器，包括第二输入端，输出衰减输入信号的衰减信号，通过终端电阻连接到地电源的第二隔离端，第二耦合端和第二通 终奌站; 以及连接到所述第一耦合端子，所述第一通孔，所述第二耦合端子和所述第二通孔的信号衰减单元，并且被配置为衰减通过所述第一定向耦合器传输的信号以将所述衰减信号发送到所述第二定向耦合器 。
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公开(公告)号：US20140184438A1
公开(公告)日：2014-07-03
申请号：US14139221
申请日：2013-12-23
Inventor： Dong Pil Chang , In Bok Yom , Youn Sub Noh , Jin Cheol Jeong , Hong Gu Ji , Man Seok Uhm
IPC: G01S13/02
CPC classification number: G01S7/032 , G01S2007/027
Abstract: A transmit/receive module for radar may include a radio frequency (RF) circuit unit including an RF substrate and an RF part; and a direct current (DC) power supply circuit unit including a printed circuit board (PCB) and a DC power supply circuit part. The RF circuit unit and the DC power supply circuit unit may be disposed so that a rear surface of the RF circuit unit faces a rear surface of the DC power supply circuit unit, and may be assembled to have a separate space using at least one separation wall.
Abstract translation: 用于雷达的发射/接收模块可以包括包括RF基板和RF部分的射频（RF）电路单元; 以及包括印刷电路板（PCB）和直流电源电路部分的直流（DC）电源电路单元。 RF电路单元和DC电源电路单元可以被布置成使得RF电路单元的后表面面向DC电源电路单元的后表面，并且可以组装成具有使用至少一个分离的单独空间 壁。
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公开(公告)号：US20140077901A1
公开(公告)日：2014-03-20
申请号：US13856467
申请日：2013-04-04
Inventor： Man Seok Uhm , Chang Soo Kwak , So Hyeun Yun , Jang Sup M. Choi , Hong Yeol Lee , Dong Hwan Shin , Youn Sub Noh , In Bok Yom
IPC: H01P1/26
CPC classification number: H01P1/264
Abstract: Provided is a compact waveguide termination including: a waveguide, a termination coupled with the waveguide and formed with a groove, and a thin film resistor part coupled with the groove and configured to attenuate an input signal at a central region of the waveguide, thereby improving frequency performance.
Abstract translation: 提供了一种紧凑型波导终端，其包括：波导，与波导耦合并形成有凹槽的终端，以及与该凹槽耦合的薄膜电阻器部分，其被配置为衰减波导的中心区域处的输入信号，从而改善 频率性能。
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公开(公告)号：US20220115986A1
公开(公告)日：2022-04-14
申请号：US17496984
申请日：2021-10-08
Inventor： Dong Hwan Shin , Dong Pil Chang , Byoung Hak Kim , Seong Mo Moon , In Bok Yom , Jun Han Lim , Jin Cheol Jeong , In Kwon Ju
Abstract: Provided is a FET resistive frequency mixing device having improved RF-LO and IF-LO isolations. The frequency mixing device includes: a field effect transistor (FET), a local oscillation matching circuit connected to a gate of the FET to transfer a local oscillation signal to the gate of the FET, a gate biasing circuit connected to the gate of the FET, a radio frequency (RF) matching circuit having a first terminal connected to a drain side of the FET and a second terminal serving as a RF terminal to receive or output a RF signal, an intermediate frequency (IF) matching circuit having a first terminal connected to the drain side of the FET and a second terminal serving as an IF terminal to receive or output an IF signal, and a series resonance circuit providing a path from the drain of the FET to ground for the local oscillation signal.
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公开(公告)号：US10727556B2
公开(公告)日：2020-07-28
申请号：US16165433
申请日：2018-10-19
Inventor： Changsoo Kwak , In Bok Yom , So-hyeun Yun , Hongyeol Lee
Abstract: Disclosed is a multimode microwave filter including a resonator in which a cavity is formed to generate a resonant mode and a plurality of irises formed on a side surface of the resonator, in which the cavity of the resonator has a rhombus-shaped cross section.
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