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1. 发明授权

US08447259B2 Mode-switching low-noise amplifier and wide-band RF receiver 有权
标题翻译：模式切换低噪声放大器和宽带射频接收器
公开(公告)号：US08447259B2
公开(公告)日：2013-05-21
申请号：US12358372
申请日：2009-01-23
申请人： Jae-Hong Chang , Hyung-Ki Ahn , Hui-Jung Kim
发明人： Jae-Hong Chang , Hyung-Ki Ahn , Hui-Jung Kim
IPC分类号： H03D11/02
CPC分类号： H04B1/18 , H03F3/45179
摘要： A mode-switching LNA generally includes an input unit, an output unit and a bias voltage generator. The input unit amplifies an input signal to generate an amplified signal. The output unit receives the amplified signal from the input unit and operates either in an oscillation mode or in an amplification mode in response to a control signal to generate an output signal having a center frequency equal to a target frequency. The control signal indicates whether the center frequency of the output signal is the same as the target frequency. The bias voltage generator provides an input bias voltage to the input unit in response to the control signal, where the input bias voltage includes a first bias voltage in the amplification mode and a second bias voltage in the oscillation mode.
摘要翻译：模式切换LNA一般包括输入单元，输出单元和偏置电压发生器。输入单元放大输入信号以产生放大信号。输出单元从输入单元接收放大的信号，并响应于控制信号以振荡模式或放大模式操作，以产生具有等于目标频率的中心频率的输出信号。控制信号表示输出信号的中心频率是否与目标频率相同。偏置电压发生器响应于控制信号向输入单元提供输入偏置电压，其中输入偏置电压包括放大模式中的第一偏置电压和振荡模式中的第二偏置电压。

2. 发明授权

US08446190B2 Frequency divider, frequency synthesizer and application circuit 有权
标题翻译：分频器，频率合成器和应用电路
公开(公告)号：US08446190B2
公开(公告)日：2013-05-21
申请号：US12499978
申请日：2009-07-09
申请人： Woogeun Rhee , Xueyi Yu , Yuanfeng Sun , Sang-Soo Ko , Byeong-Ha Park , Hyung-Ki Ahn , Woo-Seung Choo , Zhihua Wang
发明人： Woogeun Rhee , Xueyi Yu , Yuanfeng Sun , Sang-Soo Ko , Byeong-Ha Park , Hyung-Ki Ahn , Woo-Seung Choo , Zhihua Wang
IPC分类号： H03L7/06
CPC分类号： H03K23/667 , H03K23/507
摘要： A frequency divider includes a prescaler and multiple modulus dividers commonly coupled to the prescaler. The prescaler generates intermediate frequency signals having a same phase difference with respect to one another in response to an oscillation frequency signal. The prescaler operates at a first frequency. The modulus dividers respectively divide the intermediate frequency signals with respective ratio to provide a plurality of division frequency signals in response to a control signal. The modulus dividers operate at a second frequency less than the first frequency.
摘要翻译：分频器包括通常耦合到预分频器的预分频器和多模式分频器。预分频器响应于振荡频率信号产生相对于彼此具有相同相位差的中频信号。预分频器以第一频率工作。模数分频器分别以相应的比例分割中频信号以响应于控制信号提供多个分频信号。模数分频器以小于第一频率的第二频率工作。

3. 发明授权

US08022782B2 Two-point phase modulator and method of calibrating conversion gain of the same 有权
标题翻译：两点相位调制器和校准转换增益的方法
公开(公告)号：US08022782B2
公开(公告)日：2011-09-20
申请号：US12585319
申请日：2009-09-11
申请人： Hyung-Ki Ahn
发明人： Hyung-Ki Ahn
IPC分类号： H03C3/00 , H03C3/06 , H03C3/09 , H03L7/08 , H03L7/085 , H03L7/18 , H04L27/20
CPC分类号： H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0991
摘要： A two-point phase modulator and a method of calibrating conversion gain of the same are provided. The two-point phase modulator locks an output frequency signal by charging and pumping charge in a phase-locked loop (PLL) circuit at the beginning of operation, opens a loop of the PLL circuit for a period of time, and applies a step signal, thus calibrating conversion gain of a modulation signal that controls the output frequency signal. Thus, the conversion gain may be accurately calibrated by the calibration operation at one time.
摘要翻译：提供了两点相位调制器和校准其转换增益的方法。两点相位调制器通过在操作开始时在锁相环（PLL）电路中充电和抽取电荷来锁定输出频率信号，打开PLL电路的一个环路一段时间，并施加步进信号，从而校准控制输出频率信号的调制信号的转换增益。因此，可以通过一次的校准操作来精确地校准转换增益。

4. 发明授权

US07880656B2 RF chip including shared converter and transceiver including the RF chip 有权
标题翻译： RF芯片包括共享转换器和收发器，包括RF芯片
公开(公告)号：US07880656B2
公开(公告)日：2011-02-01
申请号：US12238707
申请日：2008-09-26
申请人： Hyung Ki Ahn
发明人： Hyung Ki Ahn
IPC分类号： H03M1/12
CPC分类号： H04L27/364 , H03M1/1225 , H04L27/206
摘要： The invention generally relates to a radio frequency (RF) chip and/or a baseband chip for use in a wireless transmitter and/or receiver. Embodiments of the invention solve a problem caused by a mismatch in amplitude and/or phase between in-phase (I) and quadrature (Q) signals in such communication devices. According to an aspect of the invention, there is provided a communication device including: a baseband signal processing unit configured to output a plurality of analog baseband signals through a corresponding plurality of channels; and a radio frequency (RF) processing unit coupled to the plurality of channels, the RF processing unit configured to convert the plurality of analog baseband signals into a plurality of digital signals using a shared analog-to-digital converter (ADC), the RF processing unit further configured to generate an RF signal based on the plurality of digital signals.
摘要翻译：本发明一般涉及用于无线发射机和/或接收机的射频（RF）芯片和/或基带芯片。本发明的实施例解决了由这种通信设备中的同相（I）和正交（Q）信号之间的幅度和/或相位失配引起的问题。根据本发明的一个方面，提供了一种通信设备，包括：基带信号处理单元，被配置为通过相应的多个信道输出多个模拟基带信号; 以及耦合到所述多个通道的射频（RF）处理单元，所述RF处理单元被配置为使用共享模数转换器（ADC）将所述多个模拟基带信号转换为多个数字信号，所述RF 处理单元还被配置为基于所述多个数字信号生成RF信号。

5. 发明申请

US20100066459A1 Two-point phase modulator and method of calibrating conversion gain of the same 有权
标题翻译：两点相位调制器和校准转换增益的方法
公开(公告)号：US20100066459A1
公开(公告)日：2010-03-18
申请号：US12585319
申请日：2009-09-11
申请人： Hyung-Ki Ahn
发明人： Hyung-Ki Ahn
IPC分类号： H03C3/06
CPC分类号： H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0991
摘要： A two-point phase modulator and a method of calibrating conversion gain of the same are provided. The two-point phase modulator locks an output frequency signal by charging and pumping charge in a phase-locked loop (PLL) circuit at the beginning of operation, opens a loop of the PLL circuit for a period of time, and applies a step signal, thus calibrating conversion gain of a modulation signal that controls the output frequency signal. Thus, the conversion gain may be accurately calibrated by the calibration operation at one time.
摘要翻译：提供了两点相位调制器和校准其转换增益的方法。两点相位调制器通过在操作开始时在锁相环（PLL）电路中充电和抽取电荷来锁定输出频率信号，打开PLL电路的一个环路一段时间，并施加步进信号，从而校准控制输出频率信号的调制信号的转换增益。因此，可以通过一次的校准操作来精确地校准转换增益。

6. 发明申请

US20100225361A1 FREQUENCY DIVIDER, FREQUENCY SYNTHESIZER AND APPLICATION CIRCUIT 有权
标题翻译：频率分频器，频率合成器和应用电路
公开(公告)号：US20100225361A1
公开(公告)日：2010-09-09
申请号：US12499978
申请日：2009-07-09
申请人： Woogeun RHEE , Xueyi YU , Yuanfeng SUN , Sang-Soo KO , Byeong-Ha PARK , Hyung-Ki AHN , Woo-Seung CHOO , Zhihua WANG
发明人： Woogeun RHEE , Xueyi YU , Yuanfeng SUN , Sang-Soo KO , Byeong-Ha PARK , Hyung-Ki AHN , Woo-Seung CHOO , Zhihua WANG
IPC分类号： H03B21/00 , H03B19/00 , H03K21/00
CPC分类号： H03K23/667 , H03K23/507
摘要： A frequency divider includes a prescaler and multiple modulus dividers commonly coupled to the prescaler. The prescaler generates intermediate frequency signals having a same phase difference with respect to one another in response to an oscillation frequency signal. The prescaler operates at a first frequency. The modulus dividers respectively divide the intermediate frequency signals with respective ratio to provide a plurality of division frequency signals in response to a control signal. The modulus dividers operate at a second frequency less than the first frequency.
摘要翻译：分频器包括通常耦合到预分频器的预分频器和多模式分频器。预分频器响应于振荡频率信号产生相对于彼此具有相同相位差的中频信号。预分频器以第一频率工作。模数分频器分别以相应的比例分割中频信号以响应于控制信号提供多个分频信号。模数分频器以小于第一频率的第二频率工作。

7. 发明申请

US20090191838A1 MODE-SWITCHING LOW-NOISE AMPLIFIER AND WIDE-BAND RF RECEIVER 有权
标题翻译：模式开关低噪声放大器和宽带RF接收器
公开(公告)号：US20090191838A1
公开(公告)日：2009-07-30
申请号：US12358372
申请日：2009-01-23
申请人： Jae-Hong CHANG , Hyung-Ki AHN , Hui-Jung KIM
发明人： Jae-Hong CHANG , Hyung-Ki AHN , Hui-Jung KIM
IPC分类号： H04B1/16
CPC分类号： H04B1/18 , H03F3/45179
摘要： A mode-switching LNA generally includes an input unit, an output unit and a bias voltage generator. The input unit amplifies an input signal to generate an amplified signal. The output unit receives the amplified signal from the input unit and operates either in an oscillation mode or in an amplification mode in response to a control signal to generate an output signal having a center frequency equal to a target frequency. The control signal indicates whether the center frequency of the output signal is the same as the target frequency. The bias voltage generator provides an input bias voltage to the input unit in response to the control signal, where the input bias voltage includes a first bias voltage in the amplification mode and a second bias voltage in the oscillation mode.
摘要翻译：模式切换LNA通常包括输入单元，输出单元和偏置电压发生器。输入单元放大输入信号以产生放大信号。输出单元从输入单元接收放大的信号，并响应于控制信号以振荡模式或放大模式操作，以产生具有等于目标频率的中心频率的输出信号。控制信号表示输出信号的中心频率是否与目标频率相同。偏置电压发生器响应于控制信号向输入单元提供输入偏置电压，其中输入偏置电压包括放大模式中的第一偏置电压和振荡模式中的第二偏置电压。

8. 发明申请

US20090096653A1 RF CHIP INCLUDING SHARED CONVERTER AND TRANSCEIVER INCLUDING THE RF CHIP 有权
标题翻译： RF芯片包括共享转换器和收发器，包括RF芯片
公开(公告)号：US20090096653A1
公开(公告)日：2009-04-16
申请号：US12238707
申请日：2008-09-26
申请人： Hyung Ki AHN
发明人： Hyung Ki AHN
IPC分类号： H03M1/12
CPC分类号： H04L27/364 , H03M1/1225 , H04L27/206
摘要： The invention generally relates to a radio frequency (RF) chip and/or a baseband chip for use in a wireless transmitter and/or receiver. Embodiments of the invention solve a problem caused by a mismatch in amplitude and/or phase between in-phase (I) and quadrature (Q) signals in such communication devices. According to an aspect of the invention, there is provided a communication device including: a baseband signal processing unit configured to output a plurality of analog baseband signals through a corresponding plurality of channels; and a radio frequency (RF) processing unit coupled to the plurality of channels, the RF processing unit configured to convert the plurality of analog baseband signals into a plurality of digital signals using a shared analog-to-digital converter (ADC), the RF processing unit further configured to generate an RF signal based on the plurality of digital signals.
摘要翻译：本发明一般涉及用于无线发射机和/或接收机的射频（RF）芯片和/或基带芯片。本发明的实施例解决了由这种通信设备中的同相（I）和正交（Q）信号之间的幅度和/或相位失配引起的问题。根据本发明的一个方面，提供了一种通信设备，包括：基带信号处理单元，被配置为通过相应的多个信道输出多个模拟基带信号; 以及耦合到所述多个通道的射频（RF）处理单元，所述RF处理单元被配置为使用共享模数转换器（ADC）将所述多个模拟基带信号转换为多个数字信号，所述RF 处理单元还被配置为基于所述多个数字信号生成RF信号。

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