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    • 11. 发明申请
    • DIGITAL AMPLITUDE MODULATOR AND POLAR TRANSMITTER USING THEREOF
    • 数字振幅调制器及其使用的极性发射器
    • US20110280334A1
    • 2011-11-17
    • US12859800
    • 2010-08-20
    • Joon Hyung LimHan Jin ChoYong Il KwonKyung Hee HongKoon Shik ChoMyeung Su Kim
    • Joon Hyung LimHan Jin ChoYong Il KwonKyung Hee HongKoon Shik ChoMyeung Su Kim
    • H04L27/00H03C1/02
    • H04L27/361H03C5/00H03F2200/331H03M1/682H03M1/685H03M7/3042
    • The present invention provides a digital amplitude modulator and polar transmitter using the same. The polar transmitter includes: a polar converter for converting an input signal into an amplitude information signal and a phase information signal, and outputting the converted amplitude and phase information signal; a sigma-delta modulator for receiving a fractional part of the amplitude information signal, and generating a correcting value for an integer part of the amplitude information signal; a phase-modulator for upward-modulating the phase information signal outputted from the polar converter, and outputting carrier waves including the upward-modulated phase information signal; and a digital power amplifier for generating an output signal whose amplitude corresponds to the integer part of the amplitude information signal which is subjected to correction by the correcting value, and outputting combining the output signal with an output value of the phase-modulator to output the combined signal.
    • 本发明提供一种数字振幅调制器和使用该调幅器的极化发射机。 极性发射机包括:极化转换器,用于将输入信号转换为振幅信息信号和相位信息信号,并输出转换的幅度和相位信息信号; 一个Σ-Δ调制器,用于接收幅度信息信号的分数部分,并产生一个幅度信息信号整数部分的校正值; 相位调制器,用于对从极化转换器输出的相位信息信号进行向上调制,并输出包括向上调制相位信息信号的载波; 以及数字功率放大器,用于产生其幅度对应于通过校正值进行校正的振幅信息信号的整数部分的输出信号,并且输出将输出信号与相位调制器的输出值相组合以输出 组合信号。
    • 15. 发明授权
    • Antenna diversity receiver
    • 天线分集接收机
    • US08374565B2
    • 2013-02-12
    • US12188871
    • 2008-08-08
    • Yong Il KwonMyeung Su KimTah Joon Park
    • Yong Il KwonMyeung Su KimTah Joon Park
    • H04B1/06
    • H04B7/0814
    • An antenna diversity receiver includes a plurality of antennas, an antenna selector unit, an RF module unit, a logic gate unit, a power detector unit, and a selection controller unit. The antenna selector unit selects one of the antennas. The RF module unit converts an RF RX signal received from the antenna selector unit into a baseband RX signal. The logic gate unit controls a power detection mode for detecting the power levels of RX signals and an operation mode for selecting one of the antennas. The power detector unit detects the power level of the RX signal. The selection controller unit controls the antenna selector unit to sequentially select the antennas in the power detection mode, and controls the antenna selector unit to select the antenna with a relatively good RX sensitivity among the antennas.
    • 天线分集接收机包括多个天线,天线选择器单元,RF模块单元,逻辑门单元,功率检测单元和选择控制单元。 天线选择器单元选择一个天线。 RF模块单元将从天线选择器单元接收的RF RX信号转换为基带RX信号。 逻辑门单元控制用于检测RX信号的功率电平的功率检测模式和用于选择天线之一的操作模式。 功率检测器单元检测RX信号的功率电平。 选择控制器单元控制天线选择器单元在功率检测模式中顺序地选择天线,并且控制天线选择器单元选择天线之间具有相对良好的RX灵敏度的天线。
    • 16. 发明授权
    • Oscillation stabilization circuit
    • 振荡稳定电路
    • US07522009B2
    • 2009-04-21
    • US11808516
    • 2007-06-11
    • Yong Il KwonMyeung Su KimTah Joon Park
    • Yong Il KwonMyeung Su KimTah Joon Park
    • H03L1/00
    • H03L3/00
    • An oscillation stabilization detecting circuit comprises a T flip flop receiving a pulse-type oscillation signal generated by oscillating a crystal oscillator and then dividing the oscillation signal to output; a pulse control unit including inverters and transistors, the pulse control unit converting the signal output from the T flip flop into a pulse-type signal starting from a high level and then outputting the converted signal; and an oscillation stabilization detecting unit including a capacitor charged with the signal output from the pulse control unit; and a plurality of transistors. The oscillation stabilization detecting unit controls charging time of the capacitor by adjusting a bias current and, after the charging time passes, outputs a stabilization signal to a CPU, the stabilization signal representing that the oscillation signal is stabilized.
    • 振荡稳定检测电路包括:T触发器,接收通过振荡晶振产生的脉冲型振荡信号,然后将振荡信号分频输出; 脉冲控制单元,包括反相器和晶体管,所述脉冲控制单元将从所述T触发器输出的信号转换为从高电平开始的脉冲型信号,然后输出所述转换的信号; 以及振荡稳定检测单元,其包括充电了从脉冲控制单元输出的信号的电容器; 和多个晶体管。 振荡稳定检测单元通过调整偏置电流来控制电容器的充电时间,并且在充电时间过去之后,向CPU输出稳定信号,稳定信号表示振荡信号稳定。
    • 17. 发明申请
    • Oscillation stabilization circuit
    • 振荡稳定电路
    • US20070296514A1
    • 2007-12-27
    • US11808516
    • 2007-06-11
    • Yong Il KwonMyeung Su KimTah Joon Park
    • Yong Il KwonMyeung Su KimTah Joon Park
    • H03L7/099
    • H03L3/00
    • An oscillation stabilization detecting circuit comprises a T flip flop receiving a pulse-type oscillation signal generated by oscillating a crystal oscillator and then dividing the oscillation signal to output; a pulse control unit including inverters and transistors, the pulse control unit converting the signal output from the T flip flop into a pulse-type signal starting from a high level and then outputting the converted signal; and an oscillation stabilization detecting unit including a capacitor charged with the signal output from the pulse control unit; and a plurality of transistors. The oscillation stabilization detecting unit controls charging time of the capacitor by adjusting a bias current and, after the charging time passes, outputs a stabilization signal to a CPU, the stabilization signal representing that the oscillation signal is stabilized.
    • 振荡稳定检测电路包括:T触发器,接收通过振荡晶振产生的脉冲型振荡信号,然后将振荡信号分频输出; 脉冲控制单元,包括反相器和晶体管,所述脉冲控制单元将从所述T触发器输出的信号转换为从高电平开始的脉冲型信号,然后输出所述转换的信号; 以及振荡稳定检测单元,其包括充电了从脉冲控制单元输出的信号的电容器; 和多个晶体管。 振荡稳定检测单元通过调整偏置电流来控制电容器的充电时间,并且在充电时间过去之后,向CPU输出稳定信号,稳定信号表示振荡信号稳定。
    • 18. 发明申请
    • ANTENNA DIVERSITY RECEIVER
    • 天线多样性接收机
    • US20090170461A1
    • 2009-07-02
    • US12188871
    • 2008-08-08
    • Yong Il KWONMyeung Su KimTah Joon Park
    • Yong Il KWONMyeung Su KimTah Joon Park
    • H04B1/06
    • H04B7/0814
    • An antenna diversity receiver includes a plurality of antennas, an antenna selector unit, an RF module unit, a logic gate unit, a power detector unit, and a selection controller unit. The antenna selector unit selects one of the antennas. The RF module unit converts an RF RX signal received from the antenna selector unit into a baseband RX signal. The logic gate unit controls a power detection mode for detecting the power levels of RX signals and an operation mode for selecting one of the antennas. The power detector unit detects the power level of the RX signal. The selection controller unit controls the antenna selector unit to sequentially select the antennas in the power detection mode, and controls the antenna selector unit to select the antenna with a relatively good RX sensitivity among the antennas.
    • 天线分集接收机包括多个天线,天线选择器单元,RF模块单元,逻辑门单元,功率检测单元和选择控制单元。 天线选择器单元选择一个天线。 RF模块单元将从天线选择器单元接收的RF RX信号转换为基带RX信号。 逻辑门单元控制用于检测RX信号的功率电平的功率检测模式和用于选择天线之一的操作模式。 功率检测器单元检测RX信号的功率电平。 选择控制器单元控制天线选择器单元在功率检测模式中顺序地选择天线,并且控制天线选择器单元选择天线之间具有相对良好的RX灵敏度的天线。