公开(公告)号：US07565124B2

公开(公告)日：2009-07-21

申请号：US11178474

申请日：2005-07-12

申请人： Junghwan Lee ,  Bonkee Kim

发明人： Junghwan Lee ,  Bonkee Kim

IPC分类号： H04B1/06 ,  H04B17/00

CPC分类号： H03G3/3068 ,  H04W52/52

摘要： Disclosed herein is an automatic gain control circuit including a power detector. The automatic gain control circuit includes a receiving unit for receiving an RF signal and a gain control unit for controlling the gain of the receiving unit. The receiving unit comprises an amplification part including a low noise amplifier and a gain amplifier for amplifying the RF signal, a mixer for down-converting and tuning the RF signal output from the gain amplifier, a low pass filter for receiving the down-converted signal from the mixer, and an intermediate frequency variable gain amplifier for amplifying the signal filtered by the low pass filter to an intermediate frequency signal. The gain control unit comprises a received signal strength indicator connected to the output port of the low pass filter to detect the level of the output signal of the low pass filter, a first comparator for comparing the output signal level detected by the received signal strength indicator with a reference signal level, a power detector for detecting the output signal level of the amplification part of the receiving unit, a second comparator for comparing the output signal level detected by the power detector with a reference signal level, and a gain controller for increasing, decreasing or holding the gain in response to the signals output from the first and second comparators.

摘要翻译： 这里公开了一种包括功率检测器的自动增益控制电路。 自动增益控制电路包括用于接收RF信号的接收单元和用于控制接收单元的增益的增益控制单元。 接收单元包括放大部分，其包括低噪声放大器和用于放大RF信号的增益放大器，用于下变频和调谐从增益放大器输出的RF信号的混频器，用于接收下变频信号的低通滤波器 以及用于将由低通滤波器滤波的信号放大到中频信号的中频可变增益放大器。 增益控制单元包括连接到低通滤波器的输出端口的接收信号强度指示器，以检测低通滤波器的输出信号的电平;第一比较器，用于比较由接收信号强度指示器检测的输出信号电平 具有参考信号电平的功率检测器，用于检测接收单元的放大部分的输出信号电平的功率检测器，用于将由功率检测器检测的输出信号电平与参考信号电平进行比较的第二比较器和用于增加的增益控制器 响应于从第一和第二比较器输出的信号减小或保持增益。

公开(公告)号：US20070117532A1

公开(公告)日：2007-05-24

申请号：US11463634

申请日：2006-08-10

申请人： Bonkee Kim ,  Bo-Eun Kim

发明人： Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04H1/00 ,  H04B1/16

CPC分类号： H03J1/005 ,  H04B1/0064 ,  H04B1/0082 ,  H04B1/30 ,  H04H40/18 ,  H04H2201/11 ,  H04H2201/20

摘要： Provided is a terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver. A T-DMB and DAB low IF receiver comprises a low noise amplifier (LNA), an image rejection down-conversion mixer, a low pass filter, an amplifier, a local oscillator, and a phase-locked loop. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the local oscillator, and the phase-locked loop are integrated in a monolithic semiconductor integrated circuit substrate. Using the T-DMB and DAB low IF receiver allows a removal of a conventional SAW filter and the T-DMB and DAB low IF receiver can be easily integrated in the monolithic semiconductor integrated circuit substrate, and manufactured at low costs.

摘要翻译： 提供了地面数字多媒体广播（T-DMB）和数字音频广播（DAB）低中频（IF）接收机。 T-DMB和DAB低中频接收机包括低噪声放大器（LNA），镜像抑制下变频混频器，低通滤波器，放大器，本地振荡器和锁相环。 特别地，LNA，图像抑制下变频混频器，低通滤波器，放大器，本地振荡器和锁相环集成在单片半导体集成电路基板中。 使用T-DMB和DAB低IF接收器可以去除传统的SAW滤波器，而T-DMB和DAB低IF接收器可以轻松集成在单片半导体集成电路基板中，并以低成本制造。

公开(公告)号：US20070042742A1

公开(公告)日：2007-02-22

申请号：US11463639

申请日：2006-08-10

申请人： Bonkee Kim ,  Bo-Eun Kim

发明人： Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/30

摘要： A terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver comprises a low noise amplifier (LNA), an image rejection down-conversion mixer, a low pass filter, an amplifier, a local oscillator, a phase-locked loop, and an automatic gain controller (AGC). Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the AGC, the local oscillator, and the phase-locked loop are integrated in monolithic semiconductor integrated circuit substrate. The AGC supplies a gain control signal to the LNA and the amplifier according to the magnitude of the RF signal, and the gain control signal is controlled by a null control signal based on a null signal comprised in a received radio frequency (RF) signal.

摘要翻译： 地面数字多媒体广播（T-DMB）和数字音频广播（DAB）低中频（IF）接收机包括低噪声放大器（LNA），镜像抑制下变频混频器，低通滤波器，放大器， 本地振荡器，锁相环和自动增益控制器（AGC）。 特别地，LNA，图像抑制下变频混频器，低通滤波器，放大器，AGC，本地振荡器和锁相环集成在单片半导体集成电路基板中。 AGC根据RF信号的幅度向LNA和放大器提供增益控制信号，并且基于包含在接收的射频（RF））信号中的零信号，通过零控制信号来控制增益控制信号。

公开(公告)号：US08988904B2

公开(公告)日：2015-03-24

申请号：US13421994

申请日：2012-03-16

申请人： Bonkee Kim

发明人： Bonkee Kim

IPC分类号： H02M3/335 ,  H02M1/42 ,  H02M1/00

CPC分类号： H02M3/33523 ,  H02M1/4258 ,  H02M2001/0009 ,  Y02B70/126

摘要： The present invention relates to a power supply for controlling current that uses a flyback converter for electrical insulation between a load line unit and the power supply for controlling current. In a transformer (a flyback converter) having a flyback structure in the present invention, disclosed is a device which expects a current of the second coil by sensing a current of the first coil of the transformer, and controls the current flowing through the load line unit. A level detector is included, which updates a duty time or an on-time of the switch by transferring a reset signal to an integrator and a second sampler in accordance with a cycle of an input power. As a result, it is possible to reduce power loss by increasing a power factor through the adjustment of the phase of the current of the load line unit and an input voltage.

摘要翻译： 本发明涉及一种用于控制电流的电源，该电流使用用于负载线单元和用于控制电流的电源之间的电绝缘的反激转换器。 在本发明中具有回扫结构的变压器（反激式转换器）中，公开了一种通过检测变压器的第一线圈的电流来预测第二线圈的电流并控制流过负载线的电流的装置 单元。 包括电平检测器，其通过根据输入功率的周期将复位信号传送到积分器和第二采样器来更新占空比时间或导通时间。 结果，可以通过调整负载线单元的电流的相位和输入电压来增加功率因数来降低功率损耗。

公开(公告)号：US20120326734A1

公开(公告)日：2012-12-27

申请号：US13531879

申请日：2012-06-25

申请人： Youngho Cho ,  Bonkee Kim

发明人： Youngho Cho ,  Bonkee Kim

IPC分类号： G01R27/26

CPC分类号： G06F3/0416 ,  G01D3/032 ,  G01D5/24 ,  G06F3/044 ,  G11C27/026 ,  H03H19/004 ,  H03K17/962 ,  H03K2217/960705 ,  H03K2217/960725

摘要： Disclosed is a capacitance sensor including: a capacitance-voltage/current converter which converts a capacitance value of a sense capacitor into a voltage signal or a current signal by using an input signal; a multiplier which applies a weight to an output signal of the capacitance-voltage/current converter and outputs the weighted output signal; and an accumulator which accumulates continuously the output signal of the multiplier.

摘要翻译： 公开了一种电容传感器，包括：电容电压/电流转换器，其通过使用输入信号将感测电容器的电容值转换为电压信号或电流信号; 乘法器，其对电容电压/电流转换器的输出信号施加权重，并输出加权的输出信号; 以及累加器，其累加乘法器的输出信号。

公开(公告)号：US07756499B2

公开(公告)日：2010-07-13

申请号：US11843322

申请日：2007-08-22

申请人： Bonkee Kim ,  Bo-Eun Kim

发明人： Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04B1/06 ,  H04L27/08

CPC分类号： H03G3/3068

摘要： The receiver comprises a variable gain amplification unit, a mixing unit, a filtering unit, and three compensation unit. Each compensation unit detects powers of the signal amplified in the variable gain amplification unit, the signal down-converted in the mixing unit and the signal filtered in the filtering unit. A gain of the variable gain amplification unit is adjusted based on the powers detected by three compensation units.

摘要翻译： 接收机包括可变增益放大单元，混合单元，滤波单元和三个补偿单元。 每个补偿单元检测在可变增益放大单元中放大的信号的功率，在混合单元中被下变频的信号和在滤波单元中滤波的信号。 基于由三个补偿单元检测的功率来调整可变增益放大单元的增益。

公开(公告)号：US07684772B2

公开(公告)日：2010-03-23

申请号：US11304566

申请日：2005-12-16

申请人： Junghwan Lee ,  Bonkee Kim

发明人： Junghwan Lee ,  Bonkee Kim

IPC分类号： H01Q11/12

CPC分类号： H04B1/30 ,  H03G3/3078

摘要： A tuner down-converts a Radio Frequency (RF) wireless signal and outputs the converted signal. The tuner compensates for a TOP depending on a temperature and: detects a received signal strength depending on a RF output of the tuner and transmitting the detected strength to a gain control unit; measures an operating temperature of the tuner and transmits the measured temperature value; receives the measured temperature value to compare the received temperature value with a reference TOP value, compensating compensates for the TOP value depending on variation in temperature and outputting outputs the compensated value; and receives the compensated value to control the RF output based on the TOP value and the received signal strength.

摘要翻译： 调谐器降频转换射频（RF）无线信号并输出​​转换的信号。 调谐器根据温度补偿TOP，并根据调谐器的RF输出检测接收到的信号强度，并将检测到的强度发送到增益控制单元; 测量调谐器的工作温度并传送测量的温度值; 接收测量的温度值，将接收到的温度值与参考TOP值进行比较，根据温度变化补偿TOP值，并输出输出补偿值; 并根据TOP值和接收信号强度接收补偿值以控制RF输出。

公开(公告)号：US07400192B2

公开(公告)日：2008-07-15

申请号：US11390203

申请日：2006-03-28

申请人： Youngho Cho ,  Bonkee Kim ,  Seong-Ho Park

发明人： Youngho Cho ,  Bonkee Kim ,  Seong-Ho Park

IPC分类号： H03F1/14 ,  H03F3/45 ,  H03G3/30

CPC分类号： H03F1/0277 ,  H03F1/223 ,  H03F3/45192 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/451 ,  H03F2203/45171 ,  H03F2203/45302 ,  H03F2203/45386 ,  H03F2203/45392 ,  H03F2203/45396 ,  H03F2203/45638 ,  H03F2203/7206 ,  H03F2203/7231 ,  H03F2203/7236 ,  H03G1/0088

摘要： A low noise amplifier (LNA), and more particularly, to a LNA capable of making gain variable is provided. The variable gain LNA comprises a selection unit comprising a first selection cell, a second selection cell, and a third selection cell for selectively transmitting an input signal to an amplification unit to select one of the first to third selection cells in accordance with the magnitude of the input signal and an amplification unit comprising a first amplification cell for amplifying a signal applied from the first selection cell to a first gain mode and outputting, a second amplification cell for amplifying a signal applied from the second selection cell to a second gain and outputting, and a third amplification cell for amplifying a signal applied from the third selection cell to a third gain mode and outputting.

摘要翻译： 提供了一种低噪声放大器（LNA），更具体地说，涉及一种能够提高增益的LNA。 可变增益LNA包括选择单元，其包括第一选择单元，第二选择单元和第三选择单元，用于根据第一至第三选择单元的大小选择性地将输入信号发送到放大单元以选择第一至第三选择单元之一 所述输入信号和放大单元包括用于将从所述第一选择单元施加的信号放大到第一增益模式的第一放大单元，并输出用于将从所述第二选择单元施加的信号放大到第二增益的第二放大单元， 以及第三放大单元，用于将从第三选择单元施加的信号放大到第三增益模式并输出。

公开(公告)号：US20070210871A1

公开(公告)日：2007-09-13

申请号：US11681893

申请日：2007-03-05

申请人： Tae Wook KIM ,  Hee yong Yoo ,  Bonkee Kim ,  Minsu Jeong

发明人： Tae Wook KIM ,  Hee yong Yoo ,  Bonkee Kim ,  Minsu Jeong

IPC分类号： H03G3/10

CPC分类号： H03F1/301 ,  H03F3/193 ,  H03F3/68

摘要： The present invention relates to an amplifier and, more particularly, to an adaptive linear amplifier with low power consumption and a high linearity. The adaptive linear amplifier according to the present invention comprises amplification means and a bias controller. The amplification means comprises a main transistor and an auxiliary transistor unit. The main transistor and the auxiliary transistor unit are coupled to each other. The bias controller controls a bias voltage applied to the main transistor and the auxiliary transistor unit.

摘要翻译： 本发明涉及一种放大器，更具体地说，涉及一种具有低功耗和高线性度的自适应线性放大器。 根据本发明的自适应线性放大器包括放大装置和偏置控制器。 放大装置包括主晶体管和辅助晶体管单元。 主晶体管和辅助晶体管单元彼此耦合。 偏置控制器控制施加到主晶体管和辅助晶体管单元的偏置电压。

公开(公告)号：US20070042730A1

公开(公告)日：2007-02-22

申请号：US11463643

申请日：2006-08-10

申请人： Bonkee Kim ,  Bo-Eun Kim

发明人： Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04B7/08 ,  H04B1/18

CPC分类号： H04B17/21 ,  H04B7/0842

摘要： Provided is a terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver. A T-DMB and DAB low IF receiver comprises a low noise amplifier (LNA), an image rejection down-conversion mixer, a low pass filter, an amplifier, a local oscillator, a phase-locked loop, and at least one high pass filter. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the local oscillator, the phase-locked loop, and the high pass filter are integrated in a monolithic semiconductor integrated circuit substrate. The T-DMB and DAB low IF receiver allows a removal of a conventional SAW filter without degrading the performance of the receiver. Thus, the T-DMB and DAB low IF receiver can be easily integrated into a single and manufactured at low costs.

摘要翻译： 提供了地面数字多媒体广播（T-DMB）和数字音频广播（DAB）低中频（IF）接收机。 T-DMB和DAB低中频接收机包括低噪声放大器（LNA），镜像抑制下变频混频器，低通滤波器，放大器，本地振荡器，锁相环以及至少一个高通 过滤。 具体地，单片半导体集成电路基板中集成有LNA，图像抑制下变频混频器，低通滤波器，放大器，本地振荡器，锁相环和高通滤波器。 T-DMB和DAB低IF接收器允许去除传统的SAW滤波器而不降低接收机的性能。 因此，T-DMB和DAB低IF接收机可以轻松集成到一个单一的并以低成本制造。