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公开(公告)号：KR101609692B1
公开(公告)日：2016-04-08
申请号：KR1020140093171
申请日：2014-07-23
Applicant: 한국항공대학교산학협력단
Abstract: 본발명은저잡음증폭기에관한것으로, RF 신호를입력받아노이즈특성을개선하는제 1 입력단및 상기 RF 신호의차동신호를입력받아노이즈특성을개선하는제 2 입력단을포함하는제 1 증폭부; 및상기제 1 증폭부의신호를입력받아진폭및 위상의미스매치를보상하고증폭하는제 2 증폭부를포함하는구성을마련하여종래기술에비해인덕터를사용하지않고, 싱글투 디퍼렌셜(Single to differential)을사용함으로써디퍼렌셜로인한장점을가짐과동시에단일입력(Single input)을사용함으로써핀 개수를줄일수 있다는점으로인해칩 사이즈를현저히줄일수 있다는효과가얻어진다.
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公开(公告)号：KR101440919B1
公开(公告)日：2014-09-18
申请号：KR1020130078688
申请日：2013-07-05
Applicant: 한국항공대학교산학협력단
Abstract: The present invention relates to a CMOS rectifier. According to the present invention, duty of clock signals, which is provided to a pair of NMOS switches arranged on a bridge circuit, is controlled based on monitored voltage values by monitoring output voltages, rectified into direct currents in the CMOS bridge circuit. The output voltages of the bridge circuit are monitored; turn-off timing of the clock signals, which are provided from a comparator to a gate terminal of the NMOS switch based on the maximum value monitored, is adjusted. By adjusting the turn on/off timing of the NMOS switch, reverse leakage currents are minimized, thus efficiency of the rectifier can be maximized.
Abstract translation: 本发明涉及一种CMOS整流器。 根据本发明，通过监视整流为CMOS桥式电路中的直流电流的输出电压，基于所监视的电压值来控制提供给布置在桥式电路上的一对NMOS开关的时钟信号的占空比。 监测桥接电路的输出电压; 基于监视的最大值，从比较器向NMOS开关的栅极端子提供的时钟信号的关断定时被调整。 通过调整NMOS开关的导通/截止定时，反向泄漏电流被最小化，从而可以使整流器的效率最大化。
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Patent Agency Ranking
公开(公告)号：KR1020160011900A
公开(公告)日：2016-02-02
申请号：KR1020140093171
申请日：2014-07-23
Applicant: 한국항공대학교산학협력단
Abstract: 본발명은저잡음증폭기에관한것으로, RF 신호를입력받아노이즈특성을개선하는제 1 입력단및 상기 RF 신호의차동신호를입력받아노이즈특성을개선하는제 2 입력단을포함하는제 1 증폭부; 및상기제 1 증폭부의신호를입력받아진폭및 위상의미스매치를보상하고증폭하는제 2 증폭부를포함하는구성을마련하여종래기술에비해인덕터를사용하지않고, 싱글투 디퍼렌셜(Single to differential)을사용함으로써디퍼렌셜로인한장점을가짐과동시에단일입력(Single input)을사용함으로써핀 개수를줄일수 있다는점으로인해칩 사이즈를현저히줄일수 있다는효과가얻어진다.
Abstract translation: 本发明涉及一种低噪声放大器，包括：第一放大单元，包括通过接收射频（RF）信号来提高噪声特性的第一输入端，以及通过接收RF的差分信号来提高噪声特性的第二输入端 信号; 以及第二放大单元，通过接收第一放大单元的信号来补偿和放大幅度和相位的失配。 因此，与现有技术相比，通过使用单差分而不使用电感器的优点，同时使用单个输入，可以减少引脚数以显着降低芯片尺寸。
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公开(公告)号：KR1020150038829A
公开(公告)日：2015-04-09
申请号：KR1020130116859
申请日：2013-09-30
Applicant: 한국항공대학교산학협력단
IPC: H03F1/26
CPC classification number: H03F1/26
Abstract: RF 프런트-엔드(front-end) 단에서 single to differential로신호를처리할때 발생하는위상및 이득부조화를보상할수 있도록한 위상및 이득부조화보상용저잡음증폭기에관한것으로, 수신신호로부터분리된제1신호(INP)를증폭하고, 증폭된제1신호와벡터합을통해위상부조화와진폭부조화를보상하는제1신호부조화보상부; 및상기수신신호로부터분리된제2신호(INN)를증폭하고, 증폭된제2신호와벡터합을통해위상부조화와진폭부조화를보상하는제2신호부조화보상부로위상및 이득부조화보상용저잡음증폭기를구현함으로써, RF 프런트-엔드(front-end) 단에서 single to differential로신호를처리할때 위상및 이득부조화를보상하기위해별도의보상장치를사용하지않고, 저잡음증폭기자체적으로위상및 이득부조화를보상할수 있게된다.
Abstract translation: 本发明涉及一种在RF前端终端中用单差分处理信号时产生相位和增益失配补偿的低噪声放大器。 具有相位和增益失配补偿的低噪声放大器包括：第一信号失配补偿部分，其放大与接收信号分离的第一信号（INP），并通过矢量和和放大的第一信号校正幅度失配和相位失配; 以及第二信号失配补偿部分，其放大与接收信号分离的第二信号（INN），并且通过矢量和和放大的第二信号来校正幅度失配和相位失配。 因此，当在RF前端终端中用单差分处理信号时，低噪声放大器校正相位和增益失配，而不使用单独的补偿装置来校正相位和增益失配。
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公开(公告)号：KR101547251B1
公开(公告)日：2015-09-07
申请号：KR1020130116859
申请日：2013-09-30
Applicant: 한국항공대학교산학협력단
IPC: H03F1/26
Abstract: RF 프런트-엔드(front-end) 단에서 single to differential로신호를처리할때 발생하는위상및 이득부조화를보상할수 있도록한 위상및 이득부조화보상용저잡음증폭기에관한것으로, 수신신호로부터분리된제1신호(INP)를증폭하고, 증폭된제1신호와벡터합을통해위상부조화와진폭부조화를보상하는제1신호부조화보상부; 및상기수신신호로부터분리된제2신호(INN)를증폭하고, 증폭된제2신호와벡터합을통해위상부조화와진폭부조화를보상하는제2신호부조화보상부로위상및 이득부조화보상용저잡음증폭기를구현함으로써, RF 프런트-엔드(front-end) 단에서 single to differential로신호를처리할때 위상및 이득부조화를보상하기위해별도의보상장치를사용하지않고, 저잡음증폭기자체적으로위상및 이득부조화를보상할수 있게된다.
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公开(公告)号：KR101398175B1
公开(公告)日：2014-05-20
申请号：KR1020130001962
申请日：2013-01-08
Applicant: 한국항공대학교산학협력단
IPC: H03D7/00
Abstract: Disclosed is a frequency converter for radio frequency to improve the linearity of the frequency converter by resolving a glitch phenomenon represented on an output of the frequency converter. The disclosed frequency converter for the radio frequency comprises: a single balanced down-frequency converter and a bi-balanced down-frequency converter switching received high frequency in accordance with the local oscillation signal to convert the high frequency to a intermediate frequency signal per a channel; a single balanced up-frequency converter and a bi-balanced up-frequency converter switching the input intermediate frequency in accordance with the local oscillation signal to convert the intermediate frequency to the high frequency signal; and a glitch removal to remove a glitch which is occurred when switching the single balanced down-frequency converter, the bi-balanced down-frequency converter, the single balanced up-frequency converter, and the bi-balanced up-frequency converter.
Abstract translation: 公开了一种用于射频的频率转换器，其通过解决在变频器的输出上表示的毛刺现象来提高变频器的线性度。 公开的用于射频的频率转换器包括：单个平衡低频转换器和根据本地振荡信号接收的高频的双平衡低频转换器，以将高频转换成每个通道的中频信号 ; 单平衡上变频器和双平衡上变频转换器根据本地振荡信号切换输入中频，将中频转换成高频信号; 以及去除毛刺以去除在切换单个平衡低频转换器，双平衡低频转换器，单个平衡上变频器和双平衡上变频器时发生的毛刺。
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公开(公告)号：KR101573828B1
公开(公告)日：2015-12-02
申请号：KR1020140072054
申请日：2014-06-13
Applicant: 한국항공대학교산학협력단
Abstract: 이중대역(2.4GHz, 5GHz)을사용하는무선통신시스템(무선랜 시스템)에서낮은국부발진주파수(LOF; Local Oscillator Frequency)를사용하면서도이중대역을모두커버할수 있는이중대역송수신기에관한것으로서, 수신한제1주파수대역의무선신호를저잡음증폭하는제1저잡음증폭기; 수신한제2주파수대역의무선신호를저잡음증폭하는제2저잡음증폭기; 상기제1주파수대역및 제2주파수대역의신호를처리하기위한국부발진주파수를발생하는위상동기루프; 및상기위상동기루프에서발생하는국부발진주파수와상기제1저잡음증폭기또는상기제2저잡음증폭기에서출력되는무선신호를혼합하여중간주파수를추출하는주파수혼합기로이중대역송수신기의주파수하향변환기를구현하고, 위상동기루프는단일의전압제어발진기를통해국부발진주파수를발생한다.
Abstract translation: 本发明涉及一种使用双频（2.4GHz和5GHz）的无线通信系统（或无线LAN系统）中使用较低本地振荡器频率（LOF）的双频收发器，并且能够覆盖整个 双频。 双频收发器包括：第一低噪声放大器，其对第一频带中的接收到的无线信号执行低噪声放大操作; 第二低噪声放大器，其在第二频带中对接收到的无线信号执行另一低噪声放大操作; 相位同步环，其产生用于处理第一和第二频带中的信号的LOF; 以及混频器，其将由相位同步环路产生的LOF与从第一低噪声放大器或第二低噪声放大器输出的无线信号混合，以便提取中间频率。 相位同步环路通过单个压控振荡器产生LOF。
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