-
公开(公告)号：KR101405453B1
公开(公告)日：2014-06-11
申请号：KR1020100086002
申请日：2010-09-02
Applicant: 한국전자통신연구원
Abstract: 광대역 이동 통신용 시스템에서 신호 송신 장치는 송신하고자 하는 신호로부터 크기 정보인 포락선 신호와 위상 정보인 위상 신호를 분리하고, 포락선 신호를 설정 전압과 비교한다. 그리고 비교 결과를 토대로 서로 다른 구동 전압에 따라 포락선 신호를 증폭시켜 출력하는 능동 바이어스 제어를 수행하며, 증폭된 신호를 토대로 위상 신호를 증폭하는 전력 증폭부로 바이어스 전압을 공급한다.
-
公开(公告)号：KR1020130065293A
公开(公告)日：2013-06-19
申请号：KR1020110132090
申请日：2011-12-09
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A transmitter using an interval delta-sigma modulation method and its signal generation method are provided to increase encoding efficiency or amplification efficiency. CONSTITUTION: A transmitter includes a polar converter (110), an interval delta-sigma modulator (120), a mixer (130) and a power amplifier (160). The polar converter separates an amplitude signal and a phase signal from a baseband signal. The interval delta-sigma modulator of 1-bit delta-sigma modulates or bypasses the amplitude signal according to a reference level. The mixer mixes the phase signal including an amplitude component and the envelope signal including a frequency component and transmits the phase signal to a DAC (140). The power amplifier amplifies the mixed signal. [Reference numerals] (110) Polar converter; (120) Interval delta-sigma modulator; (150) Up-converter; (160) Power amplifier; (AA) Status signal; (BB) Envelope signal; (CC) RF output
Abstract translation: 目的：提供使用间隔Δ-Σ调制方法的发射机及其信号发生方法，以提高编码效率或放大效率。 构成：发射机包括极化转换器（110），间隔Δ-Σ调制器（120），混频器（130）和功率放大器（160）。 极性转换器将幅度信号和相位信号与基带信号分离。 1位delta-sigma的间隔Δ-Σ调制器根据参考电平调制或旁路幅度信号。 混频器将包括振幅分量的相位信号和包括频率分量的包络信号相混合，并将相位信号发送到DAC（140）。 功率放大器放大混合信号。 （附图标记）（110）极转换器; （120）间隔Δ-Σ调制器; （150）上变频器; （160）功率放大器; （AA）状态信号; （BB）信封信号; （CC）RF输出
-
公开(公告)号：KR1020130063774A
公开(公告)日：2013-06-17
申请号：KR1020110130319
申请日：2011-12-07
Applicant: 한국전자통신연구원
IPC: H03F1/32
CPC classification number: H03F3/245 , G06F1/0307 , H03F1/3247 , H03F3/19 , H03F2201/3212 , H03F2201/3233 , H04L27/368
Abstract: PURPOSE: A digital predistortion apparatus and a predistortion method thereof are provided to supply high linearity while reducing consumption of resources. CONSTITUTION: A predistortion compensating lookup table(110) supplies an output value to which an inverse function having a transfer characteristic of a power amplifier(150) applied according to the level of an input signal. A function generator(120) refers to a predistorted value supplied from the predistortion compensating lookup table or two pairs of input and output and supplies the predistorted value having higher accuracy. A DPD(Digital Predistortion) control unit(130) passes through an ADC(Analog to Digital Converter)(170) from the predistorted value outputted by the function generator and the power amplifier, refers to a feedback signal and updates the predistortion compensating lookup table. A DAC(Digital to Analog Converter)(140) converts the predistorted value of the input signal outputted by a DPD processing part(110-130) into an analog signal. [Reference numerals] (110) Predistortion compensating lookup table; (120) Function generator; (130) DPD control unit; (150) Power amplifier; (AA) Lookup table update; (BB) DPD processor; (CC) Feedback signal; (DD) Antenna output
Abstract translation: 目的：提供数字预失真装置及其预失真方法，以提供高线性度，同时减少资源消耗。 构成：预失真补偿查找表（110）根据输入信号的电平提供具有功率放大器（150）的转移特性的反函数的输出值。 函数发生器（120）是指从预失真补偿查找表提供的预失真值或两对输入和输出，并提供具有较高精度的预失真值。 DPD（数字预失真）控制单元（130）通过ADC（模数转换器）（170）从功能发生器和功率放大器输出的预失真值中引用反馈信号并更新预失真补偿查找表 。 DAC（数模转换器）（140）将由DPD处理部（110-130）输出的输入信号的失真值转换为模拟信号。 （附图标记）（110）预失真补偿查找表; （120）函数发生器; （130）DPD控制单元; （150）功率放大器; （AA）查找表更新; （BB）DPD处理器; （CC）反馈信号; （DD）天线输出
-
公开(公告)号：KR101201198B1
公开(公告)日：2012-11-15
申请号：KR1020080127722
申请日：2008-12-16
Applicant: 한국전자통신연구원
CPC classification number: H04L27/361
Abstract: 본 발명은 신호를 증폭하는 장치 및 방법과 이를 이용한 무선 송신 장치에 관한 것으로서, 넓은 주파수 대역에서도 고효율로 신호를 증폭하고자 한다. 이를 위하여 본 발명에 따른 신호 증폭 장치는 신호를 극좌표로 변환하여 포락선 신호 및 위상 신호를 출력하는 극좌표 변환부, 포락선 신호를 다중 레벨로 양자화하여 다중 레벨 양자화 신호를 출력하는 다중 레벨 양자화부, 다중 레벨 양자화 신호를 이용하여 증폭 스테이트를 제어하는 증폭 스테이트 제어부, 및 제어된 증폭 스테이트에 따라 위상 신호를 증폭하는 전력 증폭부를 포함한다.
광대역 증폭, 극좌표(Polar), 델타-시그마(delta-sigma) 변환, 스위칭 전력증폭기-
公开(公告)号：KR1020110071731A
公开(公告)日：2011-06-29
申请号：KR1020090128372
申请日：2009-12-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An information searching method using the search word is provided to reduce the number of the searched information by adding the additional search condition to the information search using a initial sound. CONSTITUTION: A search word is comprised of the initial sound of the character and the final sound indicator indicating the existence of the final sound. The word corresponding to the initial sound of the character and the final sound indicator is searched.
Abstract translation: 目的：提供使用搜索词的信息搜索方法，通过使用初始声音将附加搜索条件添加到信息搜索中来减少搜索信息的数量。 构成：搜索词由字符的初始声音和最终声音指示符组成，表示最终声音的存在。 搜索与字符的初始声音和最终声音指示符相对应的字。
-
Patent Agency Ranking
公开(公告)号：KR1020100069126A
公开(公告)日：2010-06-24
申请号：KR1020080127722
申请日：2008-12-16
Applicant: 한국전자통신연구원
CPC classification number: H04L27/361
Abstract: PURPOSE: An apparatus and a method for amplifying a signal, and a wireless transmitter therewith are provided to have high efficiency in a broad frequency band. CONSTITUTION: A polar coordinate conversion unit(202) outputs a phase signal and an envelope signal by converting a signal into a polar coordinate, and a multi-level quantization unit(204) outputs a multi-level quantization signal by quantizing an envelope signal. An amplification state control unit(206) controls an amplification state by using the multi-level quantization signal, and a power amplification unit(208) amplifies the phase signal according to the controlled amplification state.
Abstract translation: 目的：提供用于放大信号的装置和方法，以及其中的无线发射机，以在宽频带中具有高效率。 构成：极坐标转换单元（202）通过将信号转换为极坐标来输出相位信号和包络信号，多级量化单元（204）通过量化包络信号来输出多电平量化信号。 放大状态控制单元（206）通过使用多电平量化信号来控制放大状态，功率放大单元（208）根据受控放大状态放大相位信号。
-
公开(公告)号：KR1020100062351A
公开(公告)日：2010-06-10
申请号：KR1020080120955
申请日：2008-12-02
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2647 , H03G3/3068 , H04W72/0453 , H04W72/0473
Abstract: PURPOSE: A device and a method for controlling a gain in a receiver of a multi-band OFDM system are provided to perform automatic gain control at each band using the information on resource allocation for each band and the information on power for the whole band. CONSTITUTION: An amplifier(202) amplifies a received signal according to a first automatic gain control signal. An analog-digital converter(203) converts the amplified signal into a digital signal. A reception signal extractor for each band extracts the signal of the wanted reception band from the digitized signal for each reception band. The received signal extractors per band control the gains of the extracted signal according to a second automatic gain control signal. A received power detector(208) detects the received power value of the whole band from the digitized signal. A multi-band base-band processing unit(210) generates first and second automatic gain control signals.
Abstract translation: 目的：提供一种用于控制多频带OFDM系统的接收机中的增益的装置和方法，以使用关于每个频带的资源分配的信息和关于整个频带的功率的信息来在每个频带执行自动增益控制。 构成：放大器（202）根据第一自动增益控制信号放大接收信号。 模拟数字转换器（203）将放大的信号转换为数字信号。 每个频带的接收信号提取器从每个接收频带的数字化信号中提取所需接收频带的信号。 每个频带的接收信号提取器根据第二自动增益控制信号控制提取的信号的增益。 接收功率检测器（208）从数字化信号中检测整个频带的接收功率值。 多频带基带处理单元（210）产生第一和第二自动增益控制信号。
-
公开(公告)号：KR100961260B1
公开(公告)日：2010-06-03
申请号：KR1020070125060
申请日：2007-12-04
CPC classification number: H04L27/364 , H03C3/406
Abstract: 본 발명은 직교 변조 시스템에서 반송파 누설 보상 장치 및 그 방법에 관한 것이다.
반송파 누설을 억제하고 이를 최소화하여 보상하기 위해, 아날로그 방식의 간단한 회로를 이용하여 동위상과 직교위상 기저대역 차동 입력 직류 전압차를 0 또는 임의의 미세한 전압차로 동시에 조정한다. 따라서, 간단한 아날로그 방식의 반송파 누설 보상 장치를 이용하여 반송파 누설을 억제할 수 있으며, 다양한 직교 변조기를 이용하여 간단하게 반송파 누설 보상 장치를 구현할 수 있다.
직교 변조 시스템, 반송파, 누설, 보상, 변조기, 아날로그-
公开(公告)号：KR100886434B1
公开(公告)日：2009-03-02
申请号：KR1020070112618
申请日：2007-11-06
Applicant: 한국전자통신연구원
IPC: H03H7/12
CPC classification number: H03H7/0161 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/036
Abstract: A scalable bandwidth system and a method for controlling the tunable filter are provided to reduce complexity of hardware without an additional digital-analog converter by using a digital signal as a control signal. A scalable bandwidth system includes a tunable filter part(100) and a controller(200). The tunable filter part includes an inductor(L1) and a plurality of diodes(D1-Dn). The tunable filter part filters pass band corresponding to the inductance corresponding to inductor and the capacitance corresponding to a plurality of diodes. The controller controls the capacitance by using the control bit corresponding to each diode. A first terminal and a second terminal of the inductor are connected to the input terminal and the output terminal of the tunable filter part respectively. The cathode terminal and the anode terminal of each diode are connected to the second terminal and a ground terminal of the inductor.
Abstract translation: 提供可扩展的带宽系统和用于控制可调滤波器的方法，以通过使用数字信号作为控制信号来减少硬件的复杂度，而不需要额外的数模转换器。 可扩展带宽系统包括可调滤波器部分（100）和控制器（200）。 可调谐滤波器部分包括电感器（L1）和多个二极管（D1-Dn）。 可调谐滤波器部分对应于对应于电感器的电感的通带和对应于多个二极管的电容。 控制器通过使用与每个二极管对应的控制位控制电容。 电感器的第一端子和第二端子分别连接到可调谐滤波器部件的输入端子和输出端子。 每个二极管的阴极端子和阳极端子连接到电感器的第二端子和接地端子。
-
公开(公告)号：KR1020080052860A
公开(公告)日：2008-06-12
申请号：KR1020060124576
申请日：2006-12-08
CPC classification number: H04B1/0475 , H04B2001/0408 , H04B2001/0416 , H04L5/22 , H04L25/03012
Abstract: A LINC transmitter and an error correction method for the LINC transmitter are provided to configure the LINC transmitter using a switch, a downconverter, and an ADC to correct only the error of a nonlinear power amplifier during a frame section, thereby reducing an amount of operation in a baseband significantly without an additional hardware. An error correction method for a LINC(Linear amplification with Nonlinear Components) transmitter comprises the following steps of: outputting a first output signal and a second output signal through a switch by frame in a transmission section in order(S100); connecting the first output signal and the second output signal to the downconverter of a receiver through a coupler and downconverting and outputting the output signal of a nonlinear power amplifier(S110); converting the downconverted signal into a digital signal through an ADC(Analog to Digital Converter) and outputting the digital signal to a digital operation unit(S120); and calculating the phase and gain error of a transmitting signal by a first nonlinear power amplifier using the first output signal when an inputted signal by frame section is the first output signal and calculating the phase and gain error of a transmitting signal by a second nonlinear power amplifier using the second output signal when an inputted signal by frame section is the second output signal(S130).
Abstract translation: 提供LINC发射机和用于LINC发射机的纠错方法，用于使用开关，下变频器和ADC配置LINC发射机，以在帧部分仅校正非线性功率放大器的误差，从而减少操作量 在基带上，没有额外的硬件。 一种用于LINC（具有非线性分量线性放大器）发送器的纠错方法包括以下步骤：按顺序在发送部分逐帧地输出第一输出信号和第二输出信号（S100）; 通过耦合器将第一输出信号和第二输出信号连接到接收机的下变频器并进行下变频并输出非线性功率放大器的输出信号（S110）; 通过ADC（模/数转换器）将下变频信号转换为数字信号，并将数字信号输出到数字操作单元（S120）; 以及当输入的逐帧部分是第一输出信号并且通过第二非线性功率计算发射信号的相位和增益误差时，使用第一输出信号由第一非线性功率放大器计算发射信号的相位和增益误差 当输入的逐帧部分是第二输出信号时，使用第二输出信号的放大器（S130）。
-
-
-
-
-
-
-
-
-
Search Results
96
records
(took 0.026 seconds)
