公开(公告)号：US20090215413A1

公开(公告)日：2009-08-27

申请号：US12391774

申请日：2009-02-24

申请人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

发明人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

IPC分类号： H04B1/04

CPC分类号： H03G3/3042 ,  H03C5/00 ,  H03F1/0227 ,  H03F3/245 ,  H03F2200/15 ,  H03F2200/511 ,  H03G3/004

摘要： An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulating the phase component into a Radio Frequency (RF) signal, a bias modulator for linearly amplifying the amplitude component, for determining a bias voltage according to a magnitude of the amplitude component, and for providing a current generated using the determined bias voltage to a high-efficiency power amplifier and the high-efficiency power amplifier for amplifying the RF signal using the linearly amplified amplitude component as a drain bias voltage and using the generated current as a drain bias current.

摘要翻译： 提供了消除和消除信封（EER）功率发射器的装置和方法。 该装置包括用于将发射信号分解为振幅分量和相位分量的信号分离器，用于将相位分量调制为射频（RF）信号的正交调制器，用于线性放大振幅分量的偏置调制器，用于确定 根据幅度分量的大小，将偏置电压提供给高效率功率放大器和用于使用线性放大振幅分量放大RF信号的高效率功率放大器作为漏极 使用发电电流作为漏极偏置电流。

公开(公告)号：US08107904B2

公开(公告)日：2012-01-31

申请号：US12391774

申请日：2009-02-24

申请人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

发明人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

IPC分类号： H01Q11/12

CPC分类号： H03G3/3042 ,  H03C5/00 ,  H03F1/0227 ,  H03F3/245 ,  H03F2200/15 ,  H03F2200/511 ,  H03G3/004

摘要： An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulating the phase component into a Radio Frequency (RF) signal, a bias modulator for linearly amplifying the amplitude component, for determining a bias voltage according to a magnitude of the amplitude component, and for providing a current generated using the determined bias voltage to a high-efficiency power amplifier and the high-efficiency power amplifier for amplifying the RF signal using the linearly amplified amplitude component as a drain bias voltage and using the generated current as a drain bias current.

摘要翻译： 提供了消除和消除信封（EER）功率发射器的装置和方法。 该装置包括用于将发射信号分解为振幅分量和相位分量的信号分离器，用于将相位分量调制为射频（RF）信号的正交调制器，用于线性放大振幅分量的偏置调制器，用于确定 根据幅度分量的大小，将偏置电压提供给高效率功率放大器和用于使用线性放大振幅分量放大RF信号的高效率功率放大器作为漏极 使用发电电流作为漏极偏置电流。

公开(公告)号：US20090218995A1

公开(公告)日：2009-09-03

申请号：US12380622

申请日：2009-03-02

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： G05F1/10

CPC分类号： H03F1/0227 ,  H03F1/0266 ,  H03F3/245 ,  H03F2200/336 ,  H03F2200/351 ,  H03F2200/451

摘要： An apparatus and a method for a bias modulator using a Zero Current Switching (ZCS) are provided. The bias modulator includes a Pulse Width Modulation (PWM) signal generator for converting an input envelope signal to a PWM signal; a PWM/ZCS converter for calculating the number of ZCS control signals to be provided within an on-time duration of the PWM signal and generating at least one ZCS control signal according to the number of the ZCS control signals; and a ZCS switching regulator for generating a bias current according to the ZCS control signal.

摘要翻译： 提供了一种使用零电流开关（ZCS）的偏置调制器的装置和方法。 偏置调制器包括用于将输入包络信号转换为PWM信号的脉宽调制（PWM）信号发生器; PWM / ZCS转换器，用于计算在PWM信号的导通时间内提供的ZCS控制信号的数量，并根据ZCS控制信号的数量产生至少一个ZCS控制信号; 以及用于根据ZCS控制信号产生偏置电流的ZCS开关调节器。

公开(公告)号：US20090180530A1

公开(公告)日：2009-07-16

申请号：US12319512

申请日：2009-01-08

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： H03K7/08 ,  H04L25/03

CPC分类号： H04L25/4902 ,  H03F1/0266 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/351 ,  H03F2200/408 ,  H03F2203/21193 ,  H03G3/3047

摘要： A transmitter is provided for amplifying signal power in a communication system. The transmitter includes a single-tone signal generator for generating a single-tone signal; a baseband signal generator for generating a baseband signal; a bias modulator for switching a positive bias signal to a first power amplifier using the baseband signal, and switching a negative bias signal to the second power amplifier using the baseband signal; the first power amplifier for power-amplifying the single-tone signal using the positive bias signal; and the second power amplifier for power-amplifying the single-tone signal using the negative bias signal.

摘要翻译： 提供了一种用于在通信系统中放大信号功率的发射机。 发射机包括用于产生单音信号的单音信号发生器; 用于产生基带信号的基带信号发生器; 偏置调制器，用于使用所述基带信号将正偏置信号切换到第一功率放大器;以及使用所述基带信号将负偏置信号切换到所述第二功率放大器; 第一功率放大器，用于使用正偏置信号对单音信号进行功率放大; 以及使用负偏置信号对单音信号进行功率放大的第二功率放大器。

公开(公告)号：US08054878B2

公开(公告)日：2011-11-08

申请号：US12319512

申请日：2009-01-08

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： H03K9/08

CPC分类号： H04L25/4902 ,  H03F1/0266 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/351 ,  H03F2200/408 ,  H03F2203/21193 ,  H03G3/3047

摘要： A transmitter is provided for amplifying signal power in a communication system. The transmitter includes a single-tone signal generator for generating a single-tone signal; a baseband signal generator for generating a baseband signal; a bias modulator for switching a positive bias signal to a first power amplifier using the baseband signal, and switching a negative bias signal to the second power amplifier using the baseband signal; the first power amplifier for power-amplifying the single-tone signal using the positive bias signal; and the second power amplifier for power-amplifying the single-tone signal using the negative bias signal.

摘要翻译： 提供了一种用于在通信系统中放大信号功率的发射机。 发射机包括用于产生单音信号的单音信号发生器; 用于产生基带信号的基带信号发生器; 偏置调制器，用于使用所述基带信号将正偏置信号切换到第一功率放大器;以及使用所述基带信号将负偏置信号切换到所述第二功率放大器; 第一功率放大器，用于使用正偏置信号对单音信号进行功率放大; 以及使用负偏置信号对单音信号进行功率放大的第二功率放大器。

公开(公告)号：US20080268797A1

公开(公告)日：2008-10-30

申请号：US12109720

申请日：2008-04-25

申请人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

发明人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

IPC分类号： H04B1/04 ,  G06F3/033

CPC分类号： H01Q3/30 ,  H01Q21/0025 ,  H04B7/0617 ,  Y02D70/444

摘要： An apparatus and a method for beamforming with less heat in a wireless communication system including multiple antennas are provided. The apparatus includes a digital signal processor for processing at least one baseband digital signal, and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for one or more antenna elements constituting a respective antenna of the at least one antenna.

摘要翻译： 提供了一种用于在包括多个天线的无线通信系统中具有较少热量的波束成形的装置和方法。 该装置包括用于处理至少一个基带数字信号的数字信号处理器和至少一个射频（RF）信号处理器，用于将至少一个基带数字信号的相应基带数字信号转换成RF模拟信号，并用于放大 构成所述至少一个天线的相应天线的一个或多个天线元件的RF模拟信号的功率。

公开(公告)号：US08942653B2

公开(公告)日：2015-01-27

申请号：US12109720

申请日：2008-04-25

申请人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

发明人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

IPC分类号： H04B1/04 ,  H01Q3/30 ,  H01Q21/00 ,  H04B7/06

CPC分类号： H01Q3/30 ,  H01Q21/0025 ,  H04B7/0617 ,  Y02D70/444

摘要： An apparatus and a method for beamforming with less heat in a wireless communication system including multiple antennas are provided. The apparatus includes a digital signal processor for processing at least one baseband digital signal, and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for one or more antenna elements constituting a respective antenna of the at least one antenna.

摘要翻译： 提供了一种用于在包括多个天线的无线通信系统中具有较少热量的波束成形的装置和方法。 该装置包括用于处理至少一个基带数字信号的数字信号处理器和至少一个射频（RF）信号处理器，用于将至少一个基带数字信号的相应基带数字信号转换成RF模拟信号，并用于放大 构成所述至少一个天线的相应天线的一个或多个天线元件的RF模拟信号的功率。

公开(公告)号：US08467757B2

公开(公告)日：2013-06-18

申请号：US12871221

申请日：2010-08-30

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： H04B1/16

CPC分类号： H04B1/28 ,  H04B1/1027 ,  H04B2215/065

摘要： A wideband receiver for a wireless communication system and a method for controlling the same are provided. In the wideband receiver for a wireless communication system, a receive path includes a mixer for receiving a Radio Frequency (RF) signal having a frequency fSG and for converting the RF signal into an Intermediate Frequency (IF) signal having a frequency fIF by mixing the RF signal with a first local oscillation signal having a first local oscillation frequency fLO1, and at least one Phase Locked Loop (PLL) for providing the local oscillation signal to the mixer. A control block determines whether a half-IF signal having a center frequency of fSG−fIF/2 exists in the IF signal, and when the half-IF signal exists, controls the at least one PLL to generate a second local oscillation signal having a second local oscillation frequency fLO2 greater than the first local oscillation frequency fLO1.

摘要翻译： 提供了一种用于无线通信系统的宽带接收机及其控制方法。 在用于无线通信系统的宽带接收机中，接收路径包括用于接收具有频率fSG的射频（RF）信号的混频器，并且用于通过混合频率将RF信号转换成具有频率fIF的中频（IF）信号 RF信号具有具有第一本地振荡频率fLO1的第一本地振荡信号，以及用于向混频器提供本地振荡信号的至少一个锁相环（PLL）。 控制块确定在IF信号中是否存在具有中心频率fSG-fIF / 2的半中频信号，并且当半中频信号存在时，控制至少一个PLL以产生第二本地振荡信号，该第二本地振荡信号具有 第二本地振荡频率fLO2大于第一本地振荡频率fLO1。

公开(公告)号：US08049477B2

公开(公告)日：2011-11-01

申请号：US12380622

申请日：2009-03-02

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： G05F1/44 ,  G05F1/56

CPC分类号： H03F1/0227 ,  H03F1/0266 ,  H03F3/245 ,  H03F2200/336 ,  H03F2200/351 ,  H03F2200/451

摘要： An apparatus and a method for a bias modulator using a Zero Current Switching (ZCS) are provided. The bias modulator includes a Pulse Width Modulation (PWM) signal generator for converting an input envelope signal to a PWM signal; a PWM/ZCS converter for calculating the number of ZCS control signals to be provided within an on-time duration of the PWM signal and generating at least one ZCS control signal according to the number of the ZCS control signals; and a ZCS switching regulator for generating a bias current according to the ZCS control signal.

摘要翻译： 提供了一种使用零电流开关（ZCS）的偏置调制器的装置和方法。 偏置调制器包括用于将输入包络信号转换为PWM信号的脉宽调制（PWM）信号发生器; PWM / ZCS转换器，用于计算在PWM信号的导通时间内提供的ZCS控制信号的数量，并根据ZCS控制信号的数量产生至少一个ZCS控制信号; 以及用于根据ZCS控制信号产生偏置电流的ZCS开关调节器。

公开(公告)号：US07792501B2

公开(公告)日：2010-09-07

申请号：US11834078

申请日：2007-08-06

申请人： Cheol-Woo Ahn

发明人： Cheol-Woo Ahn

IPC分类号： H04B1/04 ,  H04K3/00

CPC分类号： H04B1/0475 ,  H04B1/28

摘要： An apparatus and method for attenuating a leakage signal of a transmitter in a communication system is provided. The apparatus includes a local oscillator, a mixer, and a leakage signal attenuator. The local oscillator outputs a reference frequency signal. The mixer adds the reference frequency signal to an IF signal to convert the IF signal into an RF signal, and outputs the RF signal, a leakage signal and an image signal. The leakage signal attenuator extracts a partial signal from the reference frequency signal output from the local oscillator, adjusts the amplitude of the extracted signal, shifts the phase of the extracted signal, and combines the resulting signal and the output signal of the mixer, to remove the leakage signal.

摘要翻译： 提供一种用于衰减通信系统中的发射机的泄漏信号的装置和方法。 该装置包括本地振荡器，混频器和泄漏信号衰减器。 本地振荡器输出参考频率信号。 混频器将参考频率信号添加到IF信号，以将IF信号转换成RF信号，并输出RF信号，泄漏信号和图像信号。 泄漏信号衰减器从本地振荡器输出的参考频率信号中提取部分信号，调整提取信号的幅度，移位提取的信号的相位，并将结果信号与混频器的输出信号相结合，去除 泄漏信号。