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    • 1. 发明授权
    • Buffer amplifier
    • 缓冲放大器
    • US07358810B2
    • 2008-04-15
    • US11438222
    • 2006-05-23
    • Ick-jin KwonSeong-sik SongYun-seong EoHeung-bae Lee
    • Ick-jin KwonSeong-sik SongYun-seong EoHeung-bae Lee
    • H03F3/45
    • H03F3/45183H03F2203/45336H03F2203/45362H03F2203/45508H03F2203/45638H03F2203/45702
    • A buffer amplifier, which includes a first differential signal amplifier including first and second NMOSFETs (N-type metal-oxide semiconductor field-effect transistors) amplifying differential input signals; a second differential signal amplifier including first and second PMOSFETs (P-type metal-oxide semiconductor field-effect transistors) amplifying the differential input signals; a first feedback resistor including an end commonly connected to drains of the first NMOSFET and the first PMOSFET and the other end commonly connected to gates of the first NMOSFET and the first PMOSFET; a second feedback resistor including an end commonly connected to drains of the second NMOSFET and the second PMOSFET and the other end commonly connected to gates of the second NMOSFET and the second PMOSFET; and a current source providing a bias current for driving the first and second differential signal amplifiers, is provided.
    • 一种缓冲放大器,包括:第一差分信号放大器,包括放大差分输入信号的第一和第二NMOSFET(N型金属氧化物半导体场效应晶体管); 包括放大差分输入信号的第一和第二PMOSFET(P型金属氧化物半导体场效应晶体管)的第二差分信号放大器; 第一反馈电阻器,其包括公共连接到第一NMOSFET和第一PMOSFET的漏极的端部,另一端公共连接到第一NMOSFET和第一PMOSFET的栅极; 第二反馈电阻器,其包括公共连接到第二NMOSFET和第二PMOSFET的漏极的端部,另一端公共连接到第二NMOSFET和第二PMOSFET的栅极; 并且提供了提供用于驱动第一和第二差分信号放大器的偏置电流的电流源。
    • 2. 发明申请
    • Buffer amplifier
    • 缓冲放大器
    • US20070001760A1
    • 2007-01-04
    • US11438222
    • 2006-05-23
    • Ick-jin KwonSeong-sik SongYun-seong EoHeung-bae Lee
    • Ick-jin KwonSeong-sik SongYun-seong EoHeung-bae Lee
    • H03F3/45
    • H03F3/45183H03F2203/45336H03F2203/45362H03F2203/45508H03F2203/45638H03F2203/45702
    • A buffer amplifier, which includes a first differential signal amplifier including first and second NMOSFETs (N-type metal-oxide semiconductor field-effect transistors) amplifying differential input signals; a second differential signal amplifier including first and second PMOSFETs (P-type metal-oxide semiconductor field-effect transistors) amplifying the differential input signals; a first feedback resistor including an end commonly connected to drains of the first NMOSFET and the first PMOSFET and the other end commonly connected to gates of the first NMOSFET and the first PMOSFET; a second feedback resistor including an end commonly connected to drains of the second NMOSFET and the second PMOSFET and the other end commonly connected to gates of the second NMOSFET and the second PMOSFET; and a current source providing a bias current for driving the first and second differential signal amplifiers, is provided.
    • 一种缓冲放大器,包括:第一差分信号放大器,包括放大差分输入信号的第一和第二NMOSFET(N型金属氧化物半导体场效应晶体管); 包括放大差分输入信号的第一和第二PMOSFET(P型金属氧化物半导体场效应晶体管)的第二差分信号放大器; 第一反馈电阻器,其包括公共连接到第一NMOSFET和第一PMOSFET的漏极的端部,另一端公共连接到第一NMOSFET和第一PMOSFET的栅极; 第二反馈电阻器,其包括公共连接到第二NMOSFET和第二PMOSFET的漏极的端部,另一端公共连接到第二NMOSFET和第二PMOSFET的栅极; 并且提供了提供用于驱动第一和第二差分信号放大器的偏置电流的电流源。
    • 3. 发明授权
    • Mixer
    • 混合器
    • US07711347B2
    • 2010-05-04
    • US11414346
    • 2006-05-01
    • Ick-jin KwonYun-seong EoHeung-bae Lee
    • Ick-jin KwonYun-seong EoHeung-bae Lee
    • H04B1/28
    • H03D7/1441H03D7/1458H03D2200/0084
    • Provided is a mixer including: an amplifier amplifying an input signal using at least one amplifier element; a mixing unit mixing the input signal amplified by the amplifier with a local oscillator signal output from a local oscillator. The mixing unit includes at least one pair of switching elements switching the amplifier, and the switching elements are MOSFETs having gates and body nodes to which a same local oscillator signal is applied. Thus, a time required for turning on the switching elements can be reduced, and 1/f noise is also reduced. Also, an overdrive voltage can be increased with respect to local oscillator signals having an identical intensity. Thus, a relatively low voltage operation can be performed.
    • 提供一种混频器,包括:使用至少一个放大器元件放大输入信号的放大器; 混合单元将由放大器放大的输入信号与从本地振荡器输出的本地振荡器信号进行混合。 混合单元包括至少一对开关放大器的开关元件,并且开关元件是具有施加相同本地振荡器信号的门和体节点的MOSFET。 因此,可以减少接通开关元件所需的时间,并且还可以降低1 / f噪声。 此外,相对于具有相同强度的本机振荡器信号,可以增加过驱动电压。 因此,可以执行相对低的电压操作。
    • 4. 发明申请
    • Mixer
    • 混合器
    • US20070004369A1
    • 2007-01-04
    • US11414346
    • 2006-05-01
    • Ick-jin KwonYun-seong EoHeung-bae Lee
    • Ick-jin KwonYun-seong EoHeung-bae Lee
    • H04B1/26
    • H03D7/1441H03D7/1458H03D2200/0084
    • Provided is a mixer including: an amplifier amplifying an input signal using at least one amplifier element; a mixing unit mixing the input signal amplified by the amplifier with a local oscillator signal output from a local oscillator. The mixing unit includes at least one pair of switching elements switching the amplifier, and the switching elements are MOSFETs having gates and body nodes to which a same local oscillator signal is applied. Thus, a time required for turning on the switching elements can be reduced, and 1/f noise is also reduced. Also, an overdrive voltage can be increased with respect to local oscillator signals having an identical intensity. Thus, a relatively low voltage operation can be performed.
    • 提供一种混频器,包括:使用至少一个放大器元件放大输入信号的放大器; 混合单元将由放大器放大的输入信号与从本地振荡器输出的本地振荡器信号进行混合。 混合单元包括至少一对开关放大器的开关元件,并且开关元件是具有施加相同本地振荡器信号的门和体节点的MOSFET。 因此,可以减少接通开关元件所需的时间,并且还可以降低1 / f噪声。 此外,相对于具有相同强度的本机振荡器信号,可以增加过驱动电压。 因此,可以执行相对低的电压操作。
    • 5. 发明授权
    • RFID reader and method for removing a transmission carrier leakage signal
    • RFID读写器和去除传输载波泄漏信号的方法
    • US08120464B2
    • 2012-02-21
    • US11634099
    • 2006-12-06
    • Hee-mun BangYun-seong EoIck-jin KwonHeung-bae Lee
    • Hee-mun BangYun-seong EoIck-jin KwonHeung-bae Lee
    • G08B21/00
    • G06K7/0008H04B1/525H04B1/59
    • A radio frequency identification (RFID) reader is provided, having a transmitting circuit that generates a transmitted signal to operate an RFID tag, a receiving circuit that receives a received signal including a tag signal from the RFID tag and a transmission carrier leakage signal leaking from the transmitting circuit, and a leakage removing circuit that senses a phase and amplitude of the transmission carrier leakage signal inputted to the receiving circuit, converts the transmitted signal from the transmitting circuit into a signal having a phase opposite to that of the transmission carrier leakage signal and an amplitude equal to that of the transmission carrier leakage signal, and synthesizes the converted signal and the received signal inputted to the receiving circuit.
    • 提供了一种射频识别(RFID)读取器,其具有产生用于操作RFID​​标签的发送信号的发送电路,接收来自RFID标签的包含标签信号的接收信号的接收电路以及从RFID标签泄漏的发送载波泄漏信号 发送电路和检测输入到接收电路的传输载波泄漏信号的相位和幅度的泄漏消除电路将来自发送电路的发送信号转换成具有与发送载波泄漏信号相反的相位的信号 振幅等于发射载波泄漏信号的振幅,并将转换的信号和输入到接收电路的接收信号合成。
    • 6. 发明申请
    • RFID reader and method for removing a transmission carrier leakage signal
    • RFID读写器和去除传输载波泄漏信号的方法
    • US20070194886A1
    • 2007-08-23
    • US11634099
    • 2006-12-06
    • Hee-mun BangYun-seong EoIck-jin KwonHeung-bae Lee
    • Hee-mun BangYun-seong EoIck-jin KwonHeung-bae Lee
    • H04Q5/22
    • G06K7/0008H04B1/525H04B1/59
    • A radio frequency identification (RFID) reader is provided, having a transmitting circuit that generates a transmitted signal to operate an RFID tag, a receiving circuit that receives a received signal including a tag signal from the RFID tag and a transmission carrier leakage signal leaking from the transmitting circuit, and a leakage removing circuit that senses a phase and amplitude of the transmission carrier leakage signal inputted to the receiving circuit, converts the transmitted signal from the transmitting circuit into a signal having a phase opposite to that of the transmission carrier leakage signal and an amplitude equal to that of the transmission carrier leakage signal, and synthesizes the converted signal and the received signal inputted to the receiving circuit.
    • 提供了一种射频识别(RFID)读取器,其具有产生用于操作RFID​​标签的发送信号的发送电路,接收来自RFID标签的包含标签信号的接收信号的接收电路以及从RFID标签泄漏的发送载波泄漏信号 发送电路和检测输入到接收电路的传输载波泄漏信号的相位和幅度的泄漏消除电路将来自发送电路的发送信号转换成具有与发送载波泄漏信号相反的相位的信号 振幅等于发射载波泄漏信号的振幅,并将转换的信号和输入到接收电路的接收信号合成。
    • 8. 发明申请
    • Variable inductance applying device using variable capacitor and variable frequency generating device thereof
    • 使用可变电容器的可变电感施加装置及其变频发生装置
    • US20060197622A1
    • 2006-09-07
    • US11360525
    • 2006-02-24
    • Yun-seong EoKwang-du LeeHeung-bae Lee
    • Yun-seong EoKwang-du LeeHeung-bae Lee
    • H03B5/08
    • H03B5/08H03J3/20
    • Disclosed is a variable inductance applying device using a variable capacitor, and a variable frequency generating device thereof. The variable inductance applying device includes: a first inductor whose both terminals are connected to an inductance applying terminal applying inductance to an external circuit; a second inductor inductively coupled to the first inductor; and a variable capacitor connected to both terminals of the second inductor, which varies inductance from the inductance applying terminal by changing capacitance. Therefore, the inductance to be applied to the external circuit can be varied by changing the capacitance of the variable capacitor. Since the variable capacitor rarely contains a resistance component, energy loss due to the resistance component hardly occurs. As a result, the variable inductance applying device has a high value of Q.
    • 公开了一种使用可变电容器的可变电感施加装置及其可变频率发生装置。 可变电感施加装置包括:第一电感器,其两个端子连接到电感施加端子,将电感施加到外部电路; 电感耦合到第一电感器的第二电感器; 以及连接到第二电感器的两个端子的可变电容器,其通过改变电容来改变来自电感施加端子的电感。 因此,可以通过改变可变电容器的电容来改变施加到外部电路的电感。 由于可变电容器很少包含电阻分量,所以几乎不发生由电阻分量引起的能量损失。 结果,可变电感施加装置具有高的Q值。