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    • 1. 发明授权
    • Radio frequency receiver
    • 射频接收机
    • US08774747B2
    • 2014-07-08
    • US13488902
    • 2012-06-05
    • Seok-bong HyunBong Hyuk ParkYun Ho ChoiJae Ho Jung
    • Seok-bong HyunBong Hyuk ParkYun Ho ChoiJae Ho Jung
    • H04B1/10H03D1/06
    • H03F3/45179H03F3/72H03F2200/294H03F2203/45302H03F2203/45394H03F2203/7236
    • A radio frequency receiver of the present invention removes out-of-band jamming signals and interference signals without SAW filters. The radio frequency receiver includes: a low noise amplifier amplifying a signal received through an antenna; a second order intermodulation cancellation unit removing second order intermodulation caused by an out-of-band jamming or interference signal included in the signal output from the low noise amplifier; a passive mixer unit converting a frequency of the signal output from the second order intermodulation cancellation unit; and a low pass filter unit removing an out-of-band jamming or interference signal included in the signal output from the passive mixer unit and delivering the signal with the out-of-band jamming or interference signal removed therefrom to a transimpedance amplifier.
    • 本发明的射频接收机在没有SAW滤波器的情况下去除带外干扰信号和干扰信号。 射频接收机包括:放大通过天线接收的信号的低噪声放大器; 二阶互调消除单元去除由低噪声放大器输出的信号中包含的带外干扰或干扰信号引起的二阶互调; 无源混频器单元,转换从二阶互调消除单元输出的信号的频率; 以及低通滤波器单元,去除从无源混频器单元输出的信号中包含的带外干扰或干扰信号,并且将从其去除的带外干扰或干扰信号的信号传送到跨阻抗放大器。
    • 2. 发明申请
    • RADIO FREQUENCY RECEIVER
    • 无线电频率接收机
    • US20130135048A1
    • 2013-05-30
    • US13488902
    • 2012-06-05
    • Seok-bong HYUNBong Hyuk ParkYun Ho ChoiJae Ho Jung
    • Seok-bong HYUNBong Hyuk ParkYun Ho ChoiJae Ho Jung
    • H03F3/45H03F3/16
    • H03F3/45179H03F3/72H03F2200/294H03F2203/45302H03F2203/45394H03F2203/7236
    • A radio frequency receiver of the present invention removes out-of-band jamming signals and interference signals without SAW filters. The radio frequency receiver includes: a low noise amplifier amplifying a signal received through an antenna; a second order intermodulation cancellation unit removing second order intermodulation caused by an out-of-band jamming or interference signal included in the signal output from the low noise amplifier; a passive mixer unit converting a frequency of the signal output from the second order intermodulation cancellation unit; and a low pass filter unit removing an out-of-band jamming or interference signal included in the signal output from the passive mixer unit and delivering the signal with the out-of-band jamming or interference signal removed therefrom to a transimpedance amplifier.
    • 本发明的射频接收机在没有SAW滤波器的情况下去除带外干扰信号和干扰信号。 射频接收机包括:放大通过天线接收的信号的低噪声放大器; 二阶互调消除单元去除由低噪声放大器输出的信号中包含的带外干扰或干扰信号引起的二阶互调; 无源混频器单元,转换从二阶互调消除单元输出的信号的频率; 以及低通滤波器单元,去除从无源混频器单元输出的信号中包含的带外干扰或干扰信号,并且将从其去除的带外干扰或干扰信号的信号传送到跨阻抗放大器。
    • 3. 发明授权
    • High-efficiency mixed-mode power amplifier
    • 高效率混合模式功率放大器
    • US07436257B2
    • 2008-10-14
    • US11482576
    • 2006-07-07
    • Min ParkYun Ho ChoiKyung Hwan ParkSeok Bong HyunSeong Su Park
    • Min ParkYun Ho ChoiKyung Hwan ParkSeok Bong HyunSeong Su Park
    • H03F1/14
    • H03F1/0222H03F1/0277
    • Provided is a power amplifier of a low-power consumption system that has linearity at a peak output power while increasing efficiency in a most frequently used range, and thereby enables a battery to last longer. The power amplifier includes an input impedance matcher for impedance-matching a signal input from the outside; a high-power amplifier and a low-power amplifier for amplifying the signal having passed through the input impedance matcher; an amplification controller controlling the high-power amplifier and low-power amplifier according to the power level of the input signal; an output impedance matcher for impedance-matching the signal amplified by the high-power amplifier and low-power amplifier; and a dynamic voltage supplier for supplying the low-power amplifier with a variable driving voltage. With the constitution set forth above, linearity at peak output power is maintained, and efficiency increases in the most frequently used range, thereby enabling the battery of a handheld to last longer.
    • 提供了一种低功耗系统的功率放大器,其在峰值输出功率下具有线性度,同时提高了最常用范围内的效率,从而使得电池能够持续更长时间。 功率放大器包括用于阻抗匹配从外部输入的信号的输入阻抗匹配器; 大功率放大器和用于放大已经通过输入阻抗匹配器的信号的低功率放大器; 放大控制器根据输入信号的功率电平控制大功率放大器和低功率放大器; 用于阻抗匹配由大功率放大器和低功率放大器放大的信号的输出阻抗匹配器; 以及用于向低功率放大器供应可变驱动电压的动态电压供应器。 根据上述结构,保持峰值输出功率的线性度,并且在最常用的范围内效率增加,从而使得手持式电池的持续时间更长。
    • 5. 发明授权
    • Apparatus of 60 GHZ band modem
    • 60 GHZ频带调制解调器的装置
    • US08675715B2
    • 2014-03-18
    • US12977261
    • 2010-12-23
    • Mun Geon KyeongYun Ho ChoiWoo Yong Lee
    • Mun Geon KyeongYun Ho ChoiWoo Yong Lee
    • H04B1/38
    • H01Q3/02H01Q1/2258H04B1/7163
    • A high-bandwidth communication modem such as an ultra wideband (UWB) communication modem or a high-giga wideband (HGWB) modem includes an interface configured to transceive data in connection with a host device, a baseband processor configured to process, in a parallel manner, a baseband signal being transceived between the interface and a parallel/serial converter, the parallel/serial converter configured to combine a parallel signal into a serial signal and output the serial signal, and separate a serial signal into a parallel signal and output the parallel signal, a radio frequency (RF) processor configured to reduce a frequency of a received UWB or HGWB signal and transmit the frequency-reduced signal to the parallel/serial converter, and increase a frequency of the serial signal received from the parallel/serial converter and transmit the frequency-increased signal to a directional antenna, and the directional antenna configured to transceive a wireless signal by forming a directional beam and control a direction of the directional beam.
    • 诸如超宽带(UWB)通信调制解调器或高千兆宽带(HGWB)调制解调器的高带宽通信调制解调器包括被配置为收发与主机设备相关的数据的接口,被配置为以并行方式处理的基带处理器 方式,在接口和并行/串行转换器之间收发基带信号,并行/串行转换器被配置为将并行信号组合成串行信号并输出​​串行信号,并将串行信号分离成并行信号并输出 并行信号,射频(RF)处理器,被配置为降低接收的UWB或HGWB信号的频率,并将频率降低的信号发送到并行/串行转换器,并且增加从并行/串行接收的串行信号的频率 转换器,并将频率增加的信号发送到定向天线,并且定向天线被配置成通过形成一个无线信号来收发无线信号 光束束并控制方向光束的方向。