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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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Patent Agency Ranking
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：US10079416B2
公开(公告)日：2018-09-18
申请号：US15462000
申请日：2017-03-17
Inventor： Seong Mo Moon , In Bok Yom , Moon-Que Lee
CPC classification number: H01P1/201 , H01P1/00 , H01P1/18 , H01P1/22 , H01P5/12 , H01P5/227 , H03H7/00
Abstract: Provided is a microwave filter system having a feedback structure. The microwave filter system may include an input hybrid coupler configured to output first output signals having a phase difference with respect to an input signal; filters disposed to be in parallel with an output end of the input hybrid coupler, and configured to filter the first output signals; and an output hybrid coupler configured to output second output signals having a phase difference with respect to each of signals filtered through the filters. An output signal of the output hybrid coupler is applied to an input end of the input hybrid coupler along a feedback path.
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公开(公告)号：US12255662B2
公开(公告)日：2025-03-18
申请号：US17977074
申请日：2022-10-31
Inventor： Dong Hwan Shin , Dong Pil Chang , Seong Mo Moon , Byoung-Sun Lee
IPC: H03L7/099
Abstract: A master reference oscillator system is provided. The master reference oscillator system includes a plurality of reference oscillators and a hybrid matrix receiving signals from the plurality of reference oscillators and outputting a plurality of output signals having the same signal magnitude, wherein at least two output signals among the plurality of output signals may have a phase difference.
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公开(公告)号：US12206383B2
公开(公告)日：2025-01-21
申请号：US17945212
申请日：2022-09-15
Inventor： Jun Han Lim , Seong Mo Moon , Jin Sek Park , Dong Pil Chang
Abstract: Disclosed is a dual-band phase shifter in which series/parallel resonance circuits are applied to a polyphase filter to implement a phase shifter, which is a core block of a multi-channel RFIC for implementing a phased array antenna system. The dual-band phase shifter may be configured by converting a capacitor (C) of an LC circuit or a CL circuit in the RFIC into a series resonance circuit and converting an inductor (L) thereof into a parallel resonance circuit, so that a signal generator operating in one frequency band can operate in a dual-band.
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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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