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    • 14. 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。
    • 15. 发明申请
    • RECEIVER WITH SIGMA-DELTA STRUCTURE
    • 接收器带有SIGMA-DELTA结构
    • US20090131004A1
    • 2009-05-21
    • US12137479
    • 2008-06-11
    • Yong Il KWONSang Hyun MinTah Joon Park
    • Yong Il KWONSang Hyun MinTah Joon Park
    • H04B1/06
    • H04B1/0007
    • There is provided a receiver with a sigma-delta structure, the receiver including: a low noise amplifier amplifying a received signal according to a detection signal; a mixer converting an RF signal of the low noise amplifier into an IF signal; a sigma-delta A/D converter converting the IF signal from the mixer 200 into a digital signal; a 1 bit detector determining whether a voltage of the output signal of the mixer is greater than that of a predetermined reference voltage and outputting the detection signal including a result of the determination; and a demodulator obtaining an FFT result with respect to the signal from the sigma-delta A/D converter and adding or subtracting a predetermined gain value to or from the FFT result to calculate received signal strength indication (RSSI).
    • 提供具有Σ-Δ结构的接收机,所述接收机包括:低噪声放大器,根据检测信号放大接收信号; 将低噪声放大器的RF信号转换成IF信号的混频器; 将来自混频器200的IF信号转换成数字信号的Σ-ΔA/ D转换器; 1比特检测器,确定混频器的输出信号的电压是否大于预定参考电压的输出信号,并输出包括确定结果的检测信号; 以及解调器,相对于来自Σ-ΔA/ D转换器的信号获得FFT结果,并向FFT结果加上或减去预定增益值,以计算接收信号强度指示(RSSI)。
    • 16. 发明申请
    • SELF CALIBRATING RC OSCILLATOR
    • 自校准RC振荡器
    • US20070285185A1
    • 2007-12-13
    • US11754089
    • 2007-05-25
    • Yong Il KWONTah Joon PARK
    • Yong Il KWONTah Joon PARK
    • H03B5/20
    • H03K3/0231H03K3/011H03L7/085H03L2207/06
    • There is disclosed a self-calibrating resistor-capacitor (RC) oscillator in which a resistor has a resistance value varied minimally by temperature change and process variation, a capacitor has a capacitance value selected adequately according to needs, and the resistor and capacitor are configurable as a one-chip by a complementary metal-oxide semiconductor (CMOS) process. The self-calibrating RC oscillator comprises a resistor part including a first resistor having a resistance value reduced with increase in temperature and a second resistor connected in series with the first resistor and having a resistance value increasing with increase in temperature.
    • 公开了一种自校准电阻电容器(RC)振荡器,其中电阻器具有由温度变化和工艺变化最小变化的电阻值,电容器具有根据需要充分选择的电容值,并且电阻器和电容器可配置 作为通过互补金属氧化物半导体(CMOS)工艺的单芯片。 自校准RC振荡器包括电阻器部分,其包括具有随着温度升高而降低的电阻值的第一电阻器和与第一电阻器串联连接的第二电阻器,并且具有随温度升高而增加的电阻值。