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    • 3. 发明申请
    • QUADRATURE VOLTAGE-CONTROLLED OSCILLATOR
    • 正弦电压控制振荡器
    • US20070247242A1
    • 2007-10-25
    • US11733042
    • 2007-04-09
    • Jeong Hoon KIMSang-Gug LEENam-Jin OHSeok-Ju YUNEung Ju KIMTah Joon PARK
    • Jeong Hoon KIMSang-Gug LEENam-Jin OHSeok-Ju YUNEung Ju KIMTah Joon PARK
    • H03L7/085
    • H03B27/00H03B5/1215H03B5/1228H03B5/1243H03B2200/0078
    • A quadrature voltage-controlled oscillator comprises a first delay cell outputting first and second phase signals having a different phase; and a second delay cell outputting third and fourth phase signals having a different phase, the third and fourth phase signals crossing the first and second phase signals, respectively. The first delay cell includes a first differential voltage-controlled oscillator connected to a power supply and outputting the first and second phase signals; and a first coupling section including first and second coupling transistors connected to the first differential voltage-controlled oscillator and first and second coupling capacitors connected in parallel to the first and second coupling transistors, respectively, so as to be grounded, the first coupling section coupling the output phase signals. The second delay cell includes a second differential voltage-controlled oscillator connected to the power supply and outputting the third and fourth phase signals; and a second coupling section including third and fourth coupling transistors connected to the second differential voltage-controlled oscillator and third and fourth coupling capacitors connected in parallel to the third and fourth coupling transistors, respectively, so as to be grounded, the second coupling section coupling the output phase signals.
    • 正交压控振荡器包括:输出具有不同相位的第一和第二相位信号的第一延迟单元; 以及输出具有不同相位的第三和第四相位信号的第二延迟单元,所述第三和第四相位信号分别与所述第一和第二相位信号交叉。 第一延迟单元包括连接到电源并输出第一和第二相位信号的第一差分压控振荡器; 以及第一耦合部分,分别包括连接到第一差分压控振荡器的第一和第二耦合晶体管以及分别与第一和第二耦合晶体管并联连接以便接地的第一和第二耦合电容器,第一耦合部分耦合 输出相位信号。 第二延迟单元包括连接到电源并输出第三和第四相位信号的第二差分压控振荡器; 以及第二耦合部分,包括连接到第二差分压控振荡器的第三和第四耦合晶体管,以及分别与第三和第四耦合晶体管并联连接以便接地的第三和第四耦合电容器,第二耦合部分耦合 输出相位信号。
    • 4. 发明授权
    • Offset local oscillator without using frequency divider
    • 偏移本地振荡器而不使用分频器
    • US07319366B2
    • 2008-01-15
    • US11409886
    • 2006-04-24
    • Nam-Jin OhSang-Gug Lee
    • Nam-Jin OhSang-Gug Lee
    • H03B5/12H03B21/01
    • H03B27/00H03B5/1215H03B5/1228H03B5/1243
    • A local oscillator without a frequency divider is provided. The local oscillator includes a quadrature voltage controlled oscillator generating I and Q signals having a frequency which is one-third of a local oscillation frequency, and a differential second-harmonic signal having a frequency which is two-thirds of the local oscillation frequency, a poly-phase filter converting the differential second-harmonic signal input from the quadrature voltage controlled oscillator into I and Q signals, and a single side band (SSB) mixer receiving the I and Q signals having the frequency which is one-third of the local oscillation frequency from the quadrature voltage controlled oscillator as an input and receiving the I and Q signals having the frequency which is two-thirds of the local oscillation frequency from the poly-phase filter as an input, and outputting the I and Q signals having the local oscillation frequency.
    • 提供了没有分频器的本地振荡器。 本地振荡器包括正交压控振荡器,其生成具有本地振荡频率的三分之一的频率的I和Q信号,以及具有作为本地振荡频率的三分之二的频率的差分二次谐波信号, 将从正交压控振荡器输入的差分二次谐波信号转换为I和Q信号的多相滤波器以及接收具有本地的三分之一频率的I和Q信号的单边带(SSB)混频器 振荡频率作为输入,从作为输入的多相滤波器接收具有作为本地振荡频率的三分之二的频率的I和Q信号,并输出具有 本地振荡频率。
    • 6. 发明申请
    • Offset local oscillator without using frequency divider
    • 偏移本地振荡器而不使用分频器
    • US20070173218A1
    • 2007-07-26
    • US11409886
    • 2006-04-24
    • Nam-Jin OhSang-Gug Lee
    • Nam-Jin OhSang-Gug Lee
    • H04B7/00
    • H03B27/00H03B5/1215H03B5/1228H03B5/1243
    • A local oscillator without a frequency divider is provided. The local oscillator includes a quadrature voltage controlled oscillator generating I and Q signals having a frequency which is one-third of a local oscillation frequency, and a differential second-harmonic signal having a frequency which is two-thirds of the local oscillation frequency, a poly-phase filter converting the differential second-harmonic signal input from the quadrature voltage controlled oscillator into I and Q signals, and a single side band (SSB) mixer receiving the I and Q signals having the frequency which is one-third of the local oscillation frequency from the quadrature voltage controlled oscillator as an input and receiving the I and Q signals having the frequency which is two-thirds of the local oscillation frequency from the poly-phase filter as an input, and outputting the I and Q signals having the local oscillation frequency.
    • 提供了没有分频器的本地振荡器。 本地振荡器包括正交压控振荡器,其生成具有本地振荡频率的三分之一的频率的I和Q信号,以及具有作为本地振荡频率的三分之二的频率的差分二次谐波信号, 将从正交压控振荡器输入的差分二次谐波信号转换为I和Q信号的多相滤波器以及接收具有本地的三分之一频率的I和Q信号的单边带(SSB)混频器 振荡频率作为输入,从作为输入的多相滤波器接收具有作为本地振荡频率的三分之二的频率的I和Q信号,并输出具有 本地振荡频率。