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1. 发明授权

US07408408B2 Predistorter for power amplifier 有权
标题翻译：功率放大器预失真器
公开(公告)号：US07408408B2
公开(公告)日：2008-08-05
申请号：US11185107
申请日：2005-07-20
申请人： Hyun-Il Kang , Young-Hwan Kim , Jae-Sup Lee , Sang-Hyun Woo
发明人： Hyun-Il Kang , Young-Hwan Kim , Jae-Sup Lee , Sang-Hyun Woo
IPC分类号： H03F1/26
CPC分类号： H03F1/3276
摘要： A predistorter that linearizes the nonlinearity of a power amplifier in a system supporting a multimode and a multiband (frequency band). The predistorter includes a field-effect transistor, an impedance transform unit, a first inductor, a first capacitor, and a second capacitor. The field-effect transistor has a source connected to the ground and uses a variable gate bias voltage. The impedance transform unit is connected to a drain of the field-effect transistor to perform impedance transform. The first inductor is connected between the impedance transform unit and a voltage provided to the field-effect transistor. The first capacitor is connected between a power input terminal and the impedance transform unit. The second capacitor is connected between a power output terminal and the impedance transform unit.
摘要翻译：一种预失真器，其将支持多模和多频带（频带）的系统中的功率放大器的非线性线性化。预失真器包括场效应晶体管，阻抗变换单元，第一电感器，第一电容器和第二电容器。场效应晶体管具有连接到地并且使用可变栅极偏置电压的源极。阻抗变换单元连接到场效应晶体管的漏极，以进行阻抗变换。第一电感器连接在阻抗变换单元和提供给场效应晶体管的电压之间。第一电容器连接在电源输入端子和阻抗变换单元之间。第二电容器连接在电力输出端子和阻抗变换单元之间。

2. 发明授权

US07782928B2 Method and apparatus for self-calibration in a mobile transceiver 有权
标题翻译：移动收发机中自校准的方法和装置
公开(公告)号：US07782928B2
公开(公告)日：2010-08-24
申请号：US11508569
申请日：2006-08-23
申请人： Hyun-Il Kang , Chang-Seok Lee , Jae-Kon Lee , Jong-Ae Park , Jae-Sup Lee , Tae-Wook Kim , Sang-Hyun Woo
发明人： Hyun-Il Kang , Chang-Seok Lee , Jae-Kon Lee , Jong-Ae Park , Jae-Sup Lee , Tae-Wook Kim , Sang-Hyun Woo
IPC分类号： H04B1/38
CPC分类号： H04L25/061 , H03D3/008 , H04B17/101 , H04B17/14 , H04B17/21 , H04L1/243
摘要： Disclosed is a method and an apparatus for self-calibrating direct current (DC) offset and imbalance between orthogonal signals, which may occur in a mobile transceiver. In the apparatus, a transmitter of a mobile terminal functions as a signal generator, and a receiver of the mobile terminal functions as a response characteristic detector. Further, a baseband processor applies test signals to the transmitter, receives the test signals returning from the receiver, and compensates the imbalance and DC offset for the transmitter side and the receiver side by using the test signals.
摘要翻译：公开了用于自校准直流（DC）偏移和正交信号之间的不平衡的方法和装置，其可能发生在移动收发机中。在该装置中，移动终端的发射机用作信号发生器，移动终端的接收机用作响应特性检测器。此外，基带处理器将测试信号施加到发射机，接收从接收机返回的测试信号，并且通过使用测试信号来补偿发射机侧和接收机侧的不平衡和DC偏移。

3. 发明申请

US20070047634A1 Method and apparatus for self-calibration in a mobile transceiver 有权
标题翻译：移动收发机中自校准的方法和装置
公开(公告)号：US20070047634A1
公开(公告)日：2007-03-01
申请号：US11508569
申请日：2006-08-23
申请人： Hyun-Il Kang , Chang-Seok Lee , Jae-Kon Lee , Jong-Ae Park , Jae-Sup Lee , Tae-Wook Kim , Sang-Hyun Woo
发明人： Hyun-Il Kang , Chang-Seok Lee , Jae-Kon Lee , Jong-Ae Park , Jae-Sup Lee , Tae-Wook Kim , Sang-Hyun Woo
IPC分类号： H04B17/00 , H04L27/10
CPC分类号： H04L25/061 , H03D3/008 , H04B17/101 , H04B17/14 , H04B17/21 , H04L1/243
摘要： Disclosed is a method and an apparatus for self-calibrating direct current (DC) offset and imbalance between orthogonal signals, which may occur in a mobile transceiver. In the apparatus, a transmitter of a mobile terminal functions as a signal generator, and a receiver of the mobile terminal functions as a response characteristic detector. Further, a baseband processor applies test signals to the transmitter, receives the test signals returning from the receiver, and compensates the imbalance and DC offset for the transmitter side and the receiver side by using the test signals.
摘要翻译：公开了用于自校准直流（DC）偏移和正交信号之间的不平衡的方法和装置，其可能发生在移动收发机中。在该装置中，移动终端的发射机用作信号发生器，移动终端的接收机用作响应特性检测器。此外，基带处理器将测试信号施加到发射机，接收从接收机返回的测试信号，并且通过使用测试信号来补偿发射机侧和接收机侧的不平衡和DC偏移。

4. 发明申请

US20060197595A1 Predistorter for power amplifier 有权
标题翻译：功率放大器预失真器
公开(公告)号：US20060197595A1
公开(公告)日：2006-09-07
申请号：US11185107
申请日：2005-07-20
申请人： Hyun-II Kang , Young-Hwan Kim , Jae-Sup Lee , Sang-Hyun Woo
发明人： Hyun-II Kang , Young-Hwan Kim , Jae-Sup Lee , Sang-Hyun Woo
IPC分类号： H03F1/26
CPC分类号： H03F1/3276
摘要： A predistorter that linearizes the nonlinearity of a power amplifier in a system supporting a multimode and a multiband (frequency band). The predistorter includes a field-effect transistor, an impedance transform unit, a first inductor, a first capacitor, and a second capacitor. The field-effect transistor has a source connected to the ground and uses a variable gate bias voltage. The impedance transform unit is connected to a drain of the field-effect transistor to perform impedance transform. The first inductor is connected between the impedance transform unit and a voltage provided to the field-effect transistor. The first capacitor is connected between a power input terminal and the impedance transform unit. The second capacitor is connected between a power output terminal and the impedance transform unit.
摘要翻译：一种预失真器，其将支持多模和多频带（频带）的系统中的功率放大器的非线性线性化。预失真器包括场效应晶体管，阻抗变换单元，第一电感器，第一电容器和第二电容器。场效应晶体管具有连接到地并且使用可变栅极偏置电压的源极。阻抗变换单元连接到场效应晶体管的漏极，以进行阻抗变换。第一电感器连接在阻抗变换单元和提供给场效应晶体管的电压之间。第一电容器连接在电源输入端子和阻抗变换单元之间。第二电容器连接在电力输出端子和阻抗变换单元之间。

5. 发明申请

US20070211808A1 Method for self-calibration in a mobile receiver 审中-公开
标题翻译：移动接收机中的自校准方法
公开(公告)号：US20070211808A1
公开(公告)日：2007-09-13
申请号：US11709910
申请日：2007-02-22
申请人： Hyun-Il Kang , Jae-Kon Lee , Hyeong-Seok Yu , Sang-Hyun Woo
发明人： Hyun-Il Kang , Jae-Kon Lee , Hyeong-Seok Yu , Sang-Hyun Woo
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04B17/0085 , H04B17/21 , H04L2027/0016 , H04L2027/0024
摘要： Provided is an apparatus and method for calibrating an imbalance characteristic of a received signal of a frequency domain in a mobile receiver which supports an Orthogonal Frequency Division Multiplexing (OFDM) scheme. To this end, a received signal of a radio frequency band is converted into a baseband signal by using a carrier, and the baseband received signal is converted from a time domain signal to a frequency domain signal. Then, a calibration coefficient is measured by using two consecutively received signals from the Fast Fourier Transform (FFT) unit. An imbalance component included in the received signal of the frequency domain due to an imbalance of the carrier is removed by using the measured calibration coefficient. In this case, the two consecutively received signals refer to two transmission signals consecutively transmitted from a transmitter, and the two transmission signals are predetermined signals.
摘要翻译：提供了一种用于校准支持正交频分复用（OFDM）方案的移动接收机中的频域的接收信号的不平衡特性的装置和方法。为此，通过使用载波将无线电频带的接收信号转换为基带信号，并将基带接收信号从时域信号转换为频域信号。然后，通过使用来自快速傅里叶变换（FFT）单元的两个连续接收的信号来测量校准系数。通过使用测量的校准系数来消除由于载波的不平衡而包括在频域的接收信号中的不平衡分量。在这种情况下，两个连续接收的信号是指从发送机连续发送的两个发送信号，两个发送信号是预定信号。

6. 发明申请

US20070159162A1 Method and apparatus for self-calibration in a mobile transceiver 审中-公开
标题翻译：移动收发机中自校准的方法和装置
公开(公告)号：US20070159162A1
公开(公告)日：2007-07-12
申请号：US11636083
申请日：2006-12-08
申请人： Hyun-Il Kang , Jae-Kon Lee , Young-Hwan Lee , Hyeong-Seok Yu , Sang-Hyun Woo
发明人： Hyun-Il Kang , Jae-Kon Lee , Young-Hwan Lee , Hyeong-Seok Yu , Sang-Hyun Woo
IPC分类号： G01R31/28
CPC分类号： H04B17/0085 , H04B17/21
摘要： Disclosed is a method and an apparatus for self-calibrating a Direct Current (DC) offset and an imbalance between orthogonal signals, which may occur in a mobile transceiver. In the apparatus, a transmitter of a mobile terminal functions as a signal generator, and a receiver of the mobile terminal functions as a response characteristic detector. Further, a baseband processor applies test signals to the transmitter, receives the test signals returning from the receiver, and compensates the imbalance and DC offset for the transmitter side and the receiver side by using the test signals. The test signal is applied to only one of the I channel path and the Q channel path, and an RF band signal output from the transmission side by the test signal is used as an input signal to the reception side.
摘要翻译：公开了用于自校准直流（DC）偏移和正交信号之间的不平衡的方法和装置，其可能发生在移动收发器中。在该装置中，移动终端的发射机用作信号发生器，移动终端的接收机用作响应特性检测器。此外，基带处理器将测试信号施加到发射机，接收从接收机返回的测试信号，并且通过使用测试信号来补偿发射机侧和接收机侧的不平衡和DC偏移。测试信号仅施加到I信道路径和Q信道路径中的一个，并且通过测试信号从发送侧输出的RF频带信号被用作到接收侧的输入信号。

7. 发明授权

US07403075B2 Ultra wide band signal generator 有权
标题翻译：超宽带信号发生器
公开(公告)号：US07403075B2
公开(公告)日：2008-07-22
申请号：US11345716
申请日：2006-02-02
申请人： Rajarshi Mukhopadhyay , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
发明人： Rajarshi Mukhopadhyay , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
IPC分类号： H03B1/00
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/124 , H03B5/1256 , H03B2200/007
摘要： Disclosed is an ultra wide band signal generator. The ultra wide band signal generator generates a signal of a required frequency using a harmonic signal having a frequency range of a ultra wide band (UWB). The ultra wide band signal generator includes an active inductor for generating harmonic signals having power strengths substantially equal to each other within a non-linear operation range, the tunable active inductor capable of tuning a value thereof, an oscillator for amplifying and outputting the harmonic signals generated from the active inductor by frequency-transiting the harmonic signals into high frequency bands, and a filter for selectively outputting one of the harmonic signals output from the oscillator.
摘要翻译：公开了一种超宽带信号发生器。超宽带信号发生器使用具有超宽带（UWB）的频率范围的谐波信号产生所需频率的信号。超宽带信号发生器包括有源电感器，用于产生具有在非线性运行范围内彼此基本相等的功率强度的谐波信号，该可调谐有源电感器能调谐其值，用于放大和输出谐波信号的振荡器通过将谐波信号频率转换成高频带从有源电感器产生的滤波器以及用于选择性地输出从振荡器输出的谐波信号之一的滤波器。

8. 发明申请

US20060197617A1 Ultra wide band signal generator 有权
标题翻译：超宽带信号发生器
公开(公告)号：US20060197617A1
公开(公告)日：2006-09-07
申请号：US11345716
申请日：2006-02-02
申请人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
发明人： Rajarshi Mukhopadhy , Sebastien Nuttinck , Yun-Seo Park , Sang-Woong Yoon , Sang-Hyun Woo , Hyun-Il Kang , Chang-Ho Lee , Joy Laskar
IPC分类号： H03B1/00
CPC分类号： H03B5/1231 , H03B5/1203 , H03B5/124 , H03B5/1256 , H03B2200/007
摘要： Disclosed is an ultra wide band signal generator. The ultra wide band signal generator generates a signal of a required frequency using a harmonic signal having a frequency range of a ultra wide band (UWB). The ultra wide band signal generator includes an active inductor for generating harmonic signals having power strengths substantially equal to each other within a non-linear operation range, the tunable active inductor capable of tuning a value thereof, an oscillator for amplifying and outputting the harmonic signals generated from the active inductor by frequency-transiting the harmonic signals into high frequency bands, and a filter for selectively outputting one of the harmonic signals output from the oscillator.
摘要翻译：公开了一种超宽带信号发生器。超宽带信号发生器使用具有超宽带（UWB）的频率范围的谐波信号产生所需频率的信号。超宽带信号发生器包括有源电感器，用于产生具有在非线性运行范围内彼此基本相等的功率强度的谐波信号，该可调谐有源电感器能调谐其值，用于放大和输出谐波信号的振荡器通过将谐波信号频率转换成高频带从有源电感器产生的滤波器以及用于选择性地输出从振荡器输出的谐波信号之一的滤波器。

9. 发明授权

US07253688B2 Input matching circuit for multiband low noise amplifier 失效
标题翻译：多频低噪声放大器输入匹配电路
公开(公告)号：US07253688B2
公开(公告)日：2007-08-07
申请号：US11088591
申请日：2005-03-24
申请人： Rahul Bhatia , Sang-Hyun Woo , Ji-Hoon Bang , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Rahul Bhatia , Sang-Hyun Woo , Ji-Hoon Bang , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
IPC分类号： H03F3/191 , H03F1/22
CPC分类号： H03F3/191 , H03F2200/294 , H03F2200/372 , H03F2203/7209 , H04B1/18
摘要： Provided is a multiband low noise amplifier including a first transistor, an input matching circuit, and a first capacitor. The first transistor includes a collector electrically connected to a first power supply, a grounded emitter, and a base connected to the other end of a first inductor having one end as an input end of the low noise amplifier. The input matching circuit is connected between the collector and the base of the first transistor. The first capacitor connected to the collector of the first transistior. The input matching circuit includes a varactor. The input matching circuit includes a second capacitor connected to the varactor. The input matching circuit includes a first resistor connected to the varactor. In the multiband low noise amplifier, a varactor having a variable capacitance is installed at an input end, thereby easily performing band switching through bias voltage control by a small amount and minimizing noises that may be caused by a control signal.
摘要翻译：提供了一种包括第一晶体管，输入匹配电路和第一电容器的多频带低噪声放大器。第一晶体管包括电连接到第一电源，接地发射极和与第一电感器的另一端连接的基极的集电极，第一电感器的一端作为低噪声放大器的输入端。输入匹配电路连接在第一晶体管的集电极和基极之间。第一个电容连接到第一个transistior的收集器。输入匹配电路包括变容二极管。输入匹配电路包括连接到变容二极管的第二电容器。输入匹配电路包括连接到变容二极管的第一电阻器。在多频带低噪声放大器中，具有可变电容的变容二极管安装在输入端，从而通过少量的偏置电压控制容易地执行频带切换并且最小化可能由控制信号引起的噪声。

10. 发明申请

US20060194556A1 Local oscillation circuit for direct conversion receiver 审中-公开
标题翻译：用于直接转换接收器的本地振荡电路
公开(公告)号：US20060194556A1
公开(公告)日：2006-08-31
申请号：US11345738
申请日：2006-02-02
申请人： Yun-Seo Park , Sang-Hyun Woo , Jong-Ae Park , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
发明人： Yun-Seo Park , Sang-Hyun Woo , Jong-Ae Park , Seong-Soo Lee , Chang-Ho Lee , Joy Laskar
IPC分类号： H04B1/06 , H04B1/26
CPC分类号： H04B1/30
摘要： Disclosed is a local oscillation circuit for a direct conversion receiver, which includes a local oscillator for outputting a local oscillation signal of a predetermined frequency; and a fractional signal generator for converting the local oscillation signal into a fractional harmonic signal, which has a frequency equal to a frequency of a received signal, and outputting the converted signal to a down converter. The fractional signal generator includes a divider for dividing a frequency of an output signal of the fractional signal generator by a predetermined integer; and a mixer for mixing the local oscillation signal and an output signal of the divider.
摘要翻译：公开了一种用于直接转换接收机的本地振荡电路，其包括用于输出预定频率的本地振荡信号的本地振荡器; 以及分数信号发生器，用于将本地振荡信号转换成具有等于接收信号的频率的频率的分数谐波信号，并将转换的信号输出到下变频器。分数信号发生器包括用于将分数信号发生器的输出信号的频率除以预定整数的分频器; 以及用于混合本地振荡信号和分频器的输出信号的混频器。

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