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    • 1. 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。
    • 3. 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。
    • 8. 发明授权
    • Dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing
    • 双频压控振荡器采用偏置开关和输出缓冲复用
    • US07414490B2
    • 2008-08-19
    • US11288212
    • 2005-11-29
    • Sang-yoon JeonHeung-bae LeeSeong-soo LeeJinup LimJoongho Choi
    • Sang-yoon JeonHeung-bae LeeSeong-soo LeeJinup LimJoongho Choi
    • H03B5/12
    • H03B5/1228H03B5/1209H03B5/1215H03B5/124
    • Disclosed is a dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing. The dual-band voltage-controlled oscillator includes a power supply unit for supplying a source voltage; plural voltage-controlled oscillation units for outputting different oscillation frequencies according to controls of a certain tuning voltage; plural bias units for generating driving voltages for driving the voltage-controlled oscillation units and supplying the driving voltages to the voltage-controlled oscillation units; and plural buffers for selectively outputting oscillation frequencies of the plural voltage-controlled oscillation units. The present invention implements the dual-band voltage-controlled oscillator through bias switching and output-buffer multiplexing, which brings an advantage of elimination of interference between output frequencies to enhance phase noise characteristics.
    • 公开了一种使用偏置开关和输出缓冲器复用的双频带压控振荡器。 双频带压控振荡器包括用于提供源电压的电源单元; 多个电压控制振荡单元,用于根据某个调谐电压的控制输出不同的振荡频率; 多个偏压单元,用于产生用于驱动压控振荡单元的驱动电压并将驱动电压提供给压控振荡单元; 以及用于选择性地输出多个压控振荡单元的振荡频率的多个缓冲器。 本发明通过偏置开关和输出缓冲多路复用来实现双频压控振荡器,其具有消除输出频率之间的干扰以增强相位噪声特性的优点。
    • 9. 发明申请
    • Dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing
    • 双频压控振荡器采用偏置开关和输出缓冲复用
    • US20060170512A1
    • 2006-08-03
    • US11288212
    • 2005-11-29
    • Sang-yoon JeonHeung-bae LeeSeong-soo LeeJinup LimJoongho Choi
    • Sang-yoon JeonHeung-bae LeeSeong-soo LeeJinup LimJoongho Choi
    • H03B5/12
    • H03B5/1228H03B5/1209H03B5/1215H03B5/124
    • Disclosed is a dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing. The dual-band voltage-controlled oscillator includes a power supply unit for supplying a source voltage; plural voltage-controlled oscillation units for outputting different oscillation frequencies according to controls of a certain tuning voltage; plural bias units for generating driving voltages for driving the voltage-controlled oscillation units and supplying the driving voltages to the voltage-controlled oscillation units; and plural buffers for selectively outputting oscillation frequencies of the plural voltage-controlled oscillation units. The present invention implements the dual-band voltage-controlled oscillator through bias switching and output-buffer multiplexing, which brings an advantage of elimination of interference between output frequencies to enhance phase noise characteristics.
    • 公开了一种使用偏置开关和输出缓冲器复用的双频带压控振荡器。 双频带压控振荡器包括用于提供源电压的电源单元; 多个电压控制振荡单元,用于根据某个调谐电压的控制输出不同的振荡频率; 多个偏压单元,用于产生用于驱动压控振荡单元的驱动电压并将驱动电压提供给压控振荡单元; 以及用于选择性地输出多个压控振荡单元的振荡频率的多个缓冲器。 本发明通过偏置开关和输出缓冲多路复用来实现双频压控振荡器,其具有消除输出频率之间的干扰以增强相位噪声特性的优点。