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公开(公告)号：KR101419806B1
公开(公告)日：2014-07-17
申请号：KR1020100115713
申请日：2010-11-19
Applicant: 한국전자통신연구원
CPC classification number: H03G1/0088
Abstract: 본 발명은 가변 이득 증폭기에 관한 것이다. 본 발명의 실시 예에 따른 가변 이득 증폭기는 연산 증폭기, 가변 궤환 임피던스부, 가변 보상 임피던스부 및 가변 전류원을 포함한다. 상기 가변 궤환 임피던스부는 상기 연산 증폭기의 반전 입력 단자와 출력 단자 사이에 연결되고, 이득 조절을 위해 가변하는 궤환 임피던스 값을 갖는다. 상기 가변 보상 임피던스부는 상기 반전 입력 단자에 연결되고, 궤환 인자를 일정하게 유지하기 위해 상기 궤환 임피던스 값의 변화에 대응하여 가변하는 보상 임피던스 값을 갖는다. 상기 가변 전류원은 상기 반전 입력 단자에 연결되고, 상기 보상 임피던스 값의 변화에 대응하여 가변하는 출력 전류를 상기 가변 보상 임피던스부에 제공한다. 본 발명의 실시 예에 따른 가변 이득 증폭기에 의하면, 이득 변화에도 주파수 특성을 일정하게 유지하기 위한 보상 커패시터가 요구되지 않으므로 면적을 줄일 수 있다. 그리고, 높은 공통 모드 입력 전압이 인가되더라도 보상 임피던스에 높은 전압이 인가되는 것을 방지하여 전력소모를 줄일 수 있다. 또한, 보상 임피던스에 전류를 공급하는 가변 전류원을 입력 노드에 연결하여 출력 전압 스윙에 대한 영향을 줄일 수 있다.
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公开(公告)号：KR1020140088250A
公开(公告)日：2014-07-10
申请号：KR1020120146606
申请日：2012-12-14
Applicant: 한국전자통신연구원
CPC classification number: H01Q1/52 , H04B7/0617
Abstract: An apparatus for improving isolation for a transmission/reception antenna according to the present invention may include a 180° hybrid coupler that divides a transmission signal into two outputs having a phase difference of 180° for delivery to respective circulators in a beam former and delivers two reception signals delivered from the beam former to a reception port and the beam former that radiates a transmission signal having a 0° phase and a transmission signal shifted to a 180° phase which are delivered from the 180° hybrid coupler to respective antennas through respective phase shifters and delivers two reception signals having the same phase which are received through the respective antennas from the 180° hybrid coupler.
Abstract translation: 根据本发明的用于改善发送/接收天线的隔离的装置可以包括180°混合耦合器，其将发送信号分成具有180°的相位差的两个输出，用于传送到波束形成器中的各个循环器，并且传送两个 从波束形成器传送到接收端口的接收信号和辐射具有0°相位和偏移到180°相位的传输信号的传输信号的波束成形器，该传输信号从180°混合耦合器通过各自的相位递送到各个天线 并提供具有相同相位的两个接收信号，这些信号通过相应天线从180°混合耦合器接收。
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公开(公告)号：KR1020140030358A
公开(公告)日：2014-03-12
申请号：KR1020120093478
申请日：2012-08-27
Applicant: 한국전자통신연구원
CPC classification number: H04L25/4902 , H03K7/08 , H03M3/504 , H04B14/062
Abstract: Disclosed are a delta-sigma modulator and a transmitter including the same. The delta-sigma modulator included in a transmitter includes a first integrator to integrate an input signal and a first feedback signal; a second integrator to integrate an output signal of the first integrator and a second feedback signal; a first comparator and a second comparator to compare an output of the second integrator with a reference signal for outputting a first comparison signal and a second comparison signal, respectively; a first DAC and a second DAC to generate a first signal and a second signal corresponding to the first comparison signal and the second comparison signal, respectively; a delay unit to generate delay signals obtained by delaying the first comparison signal and the second comparison signal by a preset time; and an output DAC to generate an output signal at a multi-voltage level corresponding to the delay signals. Accordingly, the performance and efficiency of the transmitter can be improved. [Reference numerals] (509) First DAC; (511) Second DAC; (515) Delay unit; (517) Output DAC; (519) Offset compensator; (521) Time constant compensator; (523) Differential clock generator; (525) Reference signal generator
Abstract translation: 公开了一种Δ-Σ调制器和包括其的发射器。 包括在发射机中的Δ-Σ调制器包括：第一积分器，用于积分输入信号和第一反馈信号; 第二积分器，用于积分第一积分器的输出信号和第二反馈信号; 第一比较器和第二比较器，用于将第二积分器的输出与用于分别输出第一比较信号和第二比较信号的参考信号进行比较; 第一DAC和第二DAC，分别产生对应于第一比较信号和第二比较信号的第一信号和第二信号; 延迟单元，用于产生通过将第一比较信号和第二比较信号延迟预定时间而获得的延迟信号; 以及输出DAC，以产生与延迟信号对应的多电压电平的输出信号。 因此，可以提高发射机的性能和效率。 （附图标记）（509）第一DAC; （511）第二DAC; （515）延迟单位; （517）输出DAC; （519）偏移补偿器; （521）时间常数补偿器; （523）差分时钟发生器; （525）参考信号发生器
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公开(公告)号：KR1020140001565A
公开(公告)日：2014-01-07
申请号：KR1020120069446
申请日：2012-06-27
Applicant: 한국전자통신연구원
IPC: H03M3/02
Abstract: A time constant calibration apparatus of a low pass delta sigma modulation apparatus calibrates a time constant of an integrator using a resistor and a capacitor, and the time constant calibration apparatus generates a reference voltage by flowing a reference current to a reference resistor, converts the reference voltage to a digital signal, and varies a value of the resistor of the integrator and a value of the capacitor from the digital signal. [Reference numerals] (410) Reference current generating unit; (423) Digital processing unit
Abstract translation: 低通量ΔΣ调制装置的时间常数校准装置使用电阻器和电容器校准积分器的时间常数，并且时间常数校准装置通过将参考电流流向参考电阻器来产生参考电压，转换参考电压 电压到数字信号，并且从数字信号改变积分器的电阻值和电容器的值。 （附图标记）（410）参考电流产生单元; （423）数字处理单元
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公开(公告)号：KR1020130085521A
公开(公告)日：2013-07-30
申请号：KR1020110135056
申请日：2011-12-15
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A base station apparatus for a mobile communication and a controlling method thereof are provided to perform the functions of a distribution type base station by including an radio part in an remote radio head (RRH) in a center base station, in a distribution type base station structure. CONSTITUTION: A baseband signal processing part (314) conducts the processing of a baseband signal according to a transmission signal modulation method. A digital radio control part (316) up-converts the processed baseband signal to a digital radio signal. A digital light transmitter (318) converts the digital radio signal into a digital light signal. The digital light transmitter transfers the converted digital light signal to a remote unit. [Reference numerals] (312) Network interface; (314) Baseband signal processing part; (316) Digital radio control part; (318) Digital light transmitter; (322) Digital light receiver; (324) Electricity amplifier
Abstract translation: 目的：提供一种用于移动通信的基站装置及其控制方法，用于通过在中心基站中的无线电部分（RRH）中包括无线部分，以分布型 基站结构。 构成：基带信号处理部（314）根据发送信号调制方式进行基带信号的处理。 数字无线电控制部分（316）将经处理的基带信号上变频到数字无线电信号。 数字光发射器（318）将数字无线电信号转换成数字光信号。 数字光发射器将转换的数字光信号传输到远程单元。 （附图标记）（312）网络接口; （314）基带信号处理部分; （316）数字无线电控制部分; （318）数字光发射机; （322）数字光接收机; （324）电力放大器
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Patent Agency Ranking
公开(公告)号：KR1020130058294A
公开(公告)日：2013-06-04
申请号：KR1020110124221
申请日：2011-11-25
Applicant: 한국전자통신연구원
IPC: H03M1/38
Abstract: PURPOSE: An SAR(Successive Approximation Register) ADC(Analog to Digital Converter) and an operation method thereof are provided to improve the reliability of an AD conversion. CONSTITUTION: An SAR ADC(100) comprises a digital converter(110). The digital converter receives control signals from a comparator controller(120). The digital converter converts an analog input voltage into a digital signal in response to the control signals. The digital converter comprises a DAC, a comparator(112), and an SAR logic circuit(113). The DAC samples an analog input signal and outputs the sampled result as a differential signal. The comparator detects a level difference of the differential signal, latches the level difference and outputs the latched result as a comparator signal. The SAR logic circuit determines digital bits which correspond to the analog input signal from the comparator signal. [Reference numerals] (112) Comparator; (113) SAR logic circuit; (120) Comparator controller; (130) SAR controller
Abstract translation: 目的：提供SAR（逐次逼近寄存器）ADC（模数转换器）及其操作方法，以提高AD转换的可靠性。 构成：SAR ADC（100）包括数字转换器（110）。 数字转换器从比较器控制器（120）接收控制信号。 数字转换器响应于控制信号将模拟输入电压转换成数字信号。 数字转换器包括DAC，比较器（112）和SAR逻辑电路（113）。 DAC对模拟输入信号进行采样，并将采样结果作为差分信号输出。 比较器检测差分信号的电平差，锁存电平差，并将锁存结果作为比较器信号输出。 SAR逻辑电路确定与比较器信号的模拟输入信号相对应的数字位。 （112）比较器; （113）SAR逻辑电路; （120）比较器控制器; （130）SAR控制器
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公开(公告)号：KR1020120118340A
公开(公告)日：2012-10-26
申请号：KR1020110035840
申请日：2011-04-18
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2614 , H03F1/025
Abstract: PURPOSE: A signal amplifier, a wireless transmitter, and a method thereof are provided to increase amplifier efficiency by supplying a bias to an amplifier based on size change of a pulse quantization signal. CONSTITUTION: A signal amplification device(10) comprises a signal modulation part(100), a bias generating part(120), and a signal amplification part(130). The signal modulation part outputs a digitized multilevel quantization signal by quantizing an envelope signal into a multilevel. The bias generating part tracks size modulation of a pulse quantization signal inputted into the signal amplification part. The bias generating part provides a bias to the signal amplification part based on the tracking result. The signal amplification part amplifies the pulse quantization signal in which the multilevel quantization signal and a phase signal are combined. [Reference numerals] (100) Signal modulation part; (120) Bias generating part; (130) Signal amplification part
Abstract translation: 目的：提供信号放大器，无线发射机及其方法，以通过基于脉冲量化信号的大小变化向放大器提供偏置来提高放大器效率。 构成：信号放大装置（10）包括信号调制部（100），偏置产生部（120）和信号放大部（130）。 信号调制部通过将包络信号量化为多级，输出数字化的多级量化信号。 偏置产生部跟踪输入到信号放大部的脉冲量化信号的大小调制。 偏置产生部件基于跟踪结果向信号放大部分提供偏置。 信号放大部分放大其中组合了多电平量化信号和相位信号的脉冲量化信号。 （附图标记）（100）信号调制部; （120）偏压发生部; （130）信号放大部分
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公开(公告)号：KR1020120072039A
公开(公告)日：2012-07-03
申请号：KR1020100133803
申请日：2010-12-23
Applicant: 한국전자통신연구원
IPC: H03B5/12
CPC classification number: H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B5/1287 , H03B2201/0208
Abstract: PURPOSE: A resonator for responding a high speed signal is provided to obtain high gains by forming active feedback load. CONSTITUTION: A first transconductor(101) changes a voltage signal into a current signal. An LC(Resonant Circuit) tank(103) extracts only a desired frequency signal from signals outputted from the first transconductor. A second transconductor(102) increases a quality factor of the signals outputted from the LC tank. The first transconductor includes transistors changing the voltage signal into the current signal, transistors for linearity maintenance, and transistor consisting of a current source. The transistors are composed of an N-channel MOS(Metal-Oxide Semiconductor) field effect transistor.
Abstract translation: 目的：提供用于响应高速信号的谐振器，以通过形成主动反馈负载来获得高增益。 构成：第一跨导体（101）将电压信号改变为电流信号。 LC（谐振电路）槽（103）仅从第一跨导体输出的信号中提取期望的频率信号。 第二跨导体（102）增加从LC箱输出的信号的品质因数。 第一个跨导体包括将电压信号改变为电流信号的晶体管，用于线性维护的晶体管和由电流源组成的晶体管。 晶体管由N沟道MOS（金属氧化物半导体）场效应晶体管构成。
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公开(公告)号：KR1020120070911A
公开(公告)日：2012-07-02
申请号：KR1020100132434
申请日：2010-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04B1/62 , H03F1/3247 , H03F2201/3233
Abstract: PURPOSE: A distortion compensation apparatus and a distortion compensation signal transmission method are provided to convert the transmission characteristic of a non-linear apparatus by using predetermined transmission characteristic. CONSTITUTION: A pre-distortion unit(120) performs pre-distortion compensation of an input signal. A transfer characteristic conversion unit(122) applies the pre-distortion compensated signal to a non-linear device(10). The transfer characteristic conversion unit converts the transfer characteristic of the non-linear device. A distortion information extraction unit(124) extracts the distortion information.
Abstract translation: 目的：提供失真补偿装置和失真补偿信号传输方法，以通过使用预定的传输特性来转换非线性装置的传输特性。 构成：预失真单元（120）执行输入信号的预失真补偿。 传输特性转换单元（122）将预失真补偿信号应用于非线性设备（10）。 传送特性转换单元转换非线性装置的传送特性。 失真信息提取单元（124）提取失真信息。
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公开(公告)号：KR1020120054366A
公开(公告)日：2012-05-30
申请号：KR1020100115711
申请日：2010-11-19
Applicant: 한국전자통신연구원
CPC classification number: H04B1/18 , H03F1/26 , H03F2200/294 , H04B1/10
Abstract: PURPOSE: A signal conversion apparatus, differential signal conversion apparatus, and frequency conversion method are provided to eliminate noise by applying coupling signals to an input end of a frequency conversion unit. CONSTITUTION: A frequency converting unit(430) converts a high-frequency signal received by an input end to the output signal of down frequency by responding to an LO(Local Oscillation) frequency signals. A noise elimination unit(410) is connected to the input end of the frequency conversion unit. The noise elimination unit controls the band of the high frequency signal. The noise elimination unit eliminates the capacitance of a parasitic capacitor in the input end.
Abstract translation: 目的：提供信号转换装置，差分信号转换装置和频率转换方法，以通过将耦合信号施加到变频单元的输入端来消除噪声。 构成：频率转换单元（430）通过响应LO（本地振荡）频率信号将由输入端接收到的高频信号转换为低频的输出信号。 噪声消除单元（410）连接到变频单元的输入端。 噪声消除单元控制高频信号的频带。 噪声消除单元消除输入端的寄生电容器的电容。
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