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    • 5. 发明授权
    • Quadrature voltage controlled oscillator
    • 正交压控振荡器
    • US07375596B2
    • 2008-05-20
    • US11348229
    • 2006-02-07
    • Jin-soo ParkChan-young JeongChang-sik YooSeong-soo LeeHeung-bae Lee
    • Jin-soo ParkChan-young JeongChang-sik YooSeong-soo LeeHeung-bae Lee
    • H03B5/00
    • H03B27/00H03B5/1215H03B5/1228H03B5/1243H03B2200/0078
    • A quadrature voltage controlled oscillator having low phase noise and excellent output swing characteristics includes a first voltage controlled oscillator for outputting a positive in-phase output signal and a negative in-phase output signal; a second voltage controlled oscillator for outputting a positive quadrature-phase output signal and a negative quadrature-phase output signal, the second voltage controlled oscillator having a symmetrical structure with the first voltage controlled oscillator and constituting a feedback loop together with the first voltage controlled oscillator; a first constant current source for supplying constant current to the first voltage controlled oscillator in response to the output signals; and a second constant current source for supplying constant current to the second voltage controlled oscillator in response to the output signals.
    • 具有低相位噪声和优异输出摆幅特性的正交压控振荡器包括用于输出正同相输出信号和负同相输出信号的第一压控振荡器; 用于输出正正交相输出信号和负正交相输出信号的第二压控振荡器,所述第二压控振荡器与所述第一压控振荡器具有对称结构,并与所述第一压控振荡器一起构成反馈回路 ; 用于响应于所述输出信号向所述第一压控振荡器提供恒定电流的第一恒流源; 以及用于响应于输出信号向第二压控振荡器提供恒定电流的第二恒流源。
    • 6. 发明授权
    • Subharmonic mixer capable of reducing noise and enhancing gain and linearlty
    • 能够降低噪音并增强增益和线性度的次谐波混频器
    • US07616937B2
    • 2009-11-10
    • US11438223
    • 2006-05-23
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • H04B1/26H04B1/28
    • H03D7/166
    • A subharmonic mixer, including an amplification unit for amplifying an input signal using at least one pair of amplification devices connected in parallel and a mixing unit for mixing the amplified signal with local oscillation signals from local oscillators is provided. The mixing unit performs switching over the amplification devices and at least four pairs of switching devices connected in parallel with each other, two pairs of switching devices being connected in parallel with each other and performing switching over one amplification device. The switching devices are supplied with local oscillation signals having different phases respectively, and two switching devices forming a pair are connected in parallel with each other and supplied with local oscillation signals having a 180° phase difference therebetween. Accordingly, the switching stage is formed with one stage, the operation is enabled with low-voltage power supplies, and noise performance, linearity, and gain are enhanced.
    • 提供了一种次谐波混频器,其包括用于使用并联连接的至少一对放大装置放大输入信号的放大单元和用于将放大的信号与来自本地振荡器的本地振荡信号混合的混合单元。 混合单元对放大装置进行切换,并且至少四对开关装置彼此并联连接,两对开关装置彼此并联并执行一个放大装置的切换。 为开关器件分别提供具有不同相位的本地振荡信号,并且形成一对的两个开关器件彼此并联连接并且提供与它们之间具有180°相位差的本地振荡信号。 因此,开关级形成为一级,通过低压电源实现动作,提高噪声性能,线性度和增益。
    • 7. 发明申请
    • Subharmonic mixer capable of reducing noise and enhancing gain and linearlty
    • 能够降低噪音并增强增益和线性度的次谐波混频器
    • US20070087721A1
    • 2007-04-19
    • US11438223
    • 2006-05-23
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-Soo LeeHeung-Bae Lee
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-Soo LeeHeung-Bae Lee
    • H04B1/28
    • H03D7/166
    • A subharmonic mixer, including an amplification unit for amplifying an input signal using at least one pair of amplification devices connected in parallel and a mixing unit for mixing the amplified signal with local oscillation signals from local oscillators is provided. The mixing unit performs switching over the amplification devices and at least four pairs of switching devices connected in parallel with each other, two pairs of switching devices being connected in parallel with each other and performing switching over one amplification device. The switching devices are supplied with local oscillation signals having different phases respectively, and two switching devices forming a pair are connected in parallel with each other and supplied with local oscillation signals having a 180° phase difference therebetween. Accordingly, the switching stage is formed with one stage, the operation is enabled with low-voltage power supplies, and noise performance, linearity, and gain are enhanced.
    • 提供了一种次谐波混频器,其包括用于使用并联连接的至少一对放大装置放大输入信号的放大单元和用于将放大的信号与来自本地振荡器的本地振荡信号混合的混合单元。 混合单元对放大装置进行切换,并且至少四对开关装置彼此并联连接,两对开关装置彼此并联并执行一个放大装置的切换。 为开关器件分别提供具有不同相位的本地振荡信号,并且形成一对的两个开关器件彼此并联连接并且提供与它们之间具有180°相位差的本地振荡信号。 因此,开关级形成为一级,通过低压电源实现动作,提高噪声性能,线性度和增益。
    • 8. 发明授权
    • Re-configurable low noise amplifier utilizing feedback capacitors
    • 利用反馈电容器重新配置低噪声放大器
    • US07800450B2
    • 2010-09-21
    • US12358419
    • 2009-01-23
    • Jae-woo ParkChang-sik Yoo
    • Jae-woo ParkChang-sik Yoo
    • H03F3/68
    • H03F3/193H03F3/72H03F2200/111H03F2200/294H03F2200/378H03F2200/387H03F2200/429H03F2200/451
    • A re-configurable low noise amplifier utilizing feedback capacitors is disclosed. The low noise amplifier has output transistors, capacitor switch cells, and capacitance distributors all in an output portion. The output transistors are for controlling selection of a specific frequency band in a wide band of frequencies. The capacitor switch cells are for adjusting a harmonic frequency for the specific frequency band. The capacitance distributor is for determining an amount of gain, and according to the gain, an output impedance feeds back to an input portion of the low noise amplifier for input matching. Since the output portion is at high impedance and suitable for a wide band of frequencies, input matching not only makes the low noise amplifier applicable to kinds of wireless communication standards, but also fulfills high gain and low noise figure.
    • 公开了一种利用反馈电容器的可重构低噪声放大器。 低噪声放大器具有输出晶体管,电容开关单元和电容分配器。 输出晶体管用于控制宽频带中的特定频带的选择。 电容开关单元用于调整特定频带的谐波频率。 电容分配器用于确定增益量,并且根据增益,输出阻抗反馈到低噪声放大器的输入部分用于输入匹配。 由于输出部分处于高阻抗并且适用于宽频带,输入匹配不仅使低噪声放大器适用于各种无线通信标准,而且还实现了高增益和低噪声系数。
    • 9. 发明申请
    • RE-CONFIGURABLE LOW NOISE AMPLIFIER UTILIZING FEEDBACK CAPACITORS
    • 可重新配置低噪声放大器,利用反馈电容器
    • US20090195316A1
    • 2009-08-06
    • US12358419
    • 2009-01-23
    • Jae-woo ParkChang-sik Yoo
    • Jae-woo ParkChang-sik Yoo
    • H03F3/16
    • H03F3/193H03F3/72H03F2200/111H03F2200/294H03F2200/378H03F2200/387H03F2200/429H03F2200/451
    • A re-configurable low noise amplifier utilizing feedback capacitors is disclosed. The low noise amplifier has output transistors, capacitor switch cells, and capacitance distributors all in an output terminal. The output transistors are for controlling selection of a specific frequency band in a wide band of frequencies. The capacitor switch cells are for adjusting a harmonic frequency for the specific frequency band. The capacitance distributor is for determining an amount of gain, and according to the gain, an output impedance feeds back to an input terminal of the low noise amplifier for input matching. Since the output terminal is at high impedance and suitable for a wide band of frequencies, input matching not only makes the low noise amplifier applicable to kinds of wireless communication standards, but also fulfills high gain and low noise figure.
    • 公开了一种利用反馈电容器的可重构低噪声放大器。 低噪声放大器具有输出晶体管,电容开关单元和电容分配器。 输出晶体管用于控制宽频带中的特定频带的选择。 电容开关单元用于调整特定频带的谐波频率。 电容分配器用于确定增益量,并且根据增益,输出阻抗反馈到低噪声放大器的输入端以进行输入匹配。 由于输出端子处于高阻抗并且适用于宽频带,所以输入匹配不仅可以使低噪声放大器适用于各种无线通信标准,而且可以实现高增益和低噪声系数。