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    • 6. 发明专利
    • High frequency second harmonic oscillator
    • 高频二次谐波振荡器
    • JP2011147003A
    • 2011-07-28
    • JP2010007092
    • 2010-01-15
    • Mitsubishi Electric Corp三菱電機株式会社
    • WATANABE SHINSUKETSUKAHARA YOSHIHIROKANETANI YASUSHIMIWA SHINICHI
    • H03B5/18H03B19/10
    • H03B5/1847H03D2200/0086
    • PROBLEM TO BE SOLVED: To provide a high frequency second harmonic oscillator capable of reducing phase noise regardless of a deterioration factor of the phase noise.
      SOLUTION: The high frequency second harmonic oscillator includes: a transistor; a first electric signal line connected to a base side of the transistor; a first shunt capacitor connected to the first electric signal line and having another terminal being grounded; a second electric signal line connected to a collector side of the transistor; a second shunt capacitor connected to the second electric signal line and having another terminal being grounded; and a bulk capacitor connecting the first electric signal line and the second electric signal line. A line length of the first electric signal line is a value between a length which is obtained by subtracting a length of 1/16 wavelength of a fundamental wave signal from a length of an odd multiple of a 1/4 wavelength value of the fundamental wave signal, and a length which is obtained by adding the length of 1/16 wavelength of the fundamental wave signal to the length of the odd multiple of the 1/4 wavelength value of the fundamental wave signal.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供能够降低相位噪声的高频二次谐波振荡器,而不管相位噪声的劣化因素如何。 解决方案:高频二次谐波振荡器包括:晶体管; 连接到所述晶体管的基极侧的第一电信号线; 连接到第一电信号线并具有另一个端子接地的第一并联电容器; 连接到所述晶体管的集电极侧的第二电信号线; 连接到第二电信号线并具有另一个端子接地的第二并联电容器; 以及连接第一电信号线和第二电信号线的大容量电容器。 第一电信号线的线路长度是通过从基波的1/4波长值的奇数倍的长度减去基波信号的1/16波长的长度而得到的长度之间的值 信号和通过将基波信号的1/16波长的长度与基波信号的1/4波长值的奇数倍的长度相加而获得的长度。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • User-definable, low cost, low phase hit and spectrally pure tunable oscillator
    • 用户可定义,低成本,低相位HIT和光谱纯TUNNABLE振荡器
    • JP2007181181A
    • 2007-07-12
    • JP2006297597
    • 2006-11-01
    • Synergy Microwave Corpシナジー マイクロウェーブ コーポレーションSynergy Microwave Corporation
    • ROHDE ULRICH LPODDER AJAY KUMARSCHOEPF KLAUS JUERGENPATEL PARIMAL
    • H03B5/18H01P7/08
    • H03B5/1847H03B5/1203H03B5/1231H03B5/1243
    • PROBLEM TO BE SOLVED: To provide a multimode VCO which includes a function to absorb phase hits over a tuning range of operation and operates reliably at a low cost. SOLUTION: A tunable oscillator includes a first transistor, a second transistor connected in parallel with the first transistor, a noise feedback and bias network coupled to the first and the second transistors, a planar coupled resonator network coupled to the first and the second transistors, and a means for dynamically tuning the resonant frequency of the planar coupled resonator network and the junction capacitance of the first and the second transistors. The dynamic tuning means has a plurality of capacitive elements coupled so as to lie astride each junction of the first and the second transistors. The capacitive element has a varactor diode coupled in series to a first capacitor and a second capacitor coupled in series to the varactor diode. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种多模VCO,其包括在调谐范围内吸收相位匹配的功能,并以低成本可靠地运行。 解决方案:可调谐振荡器包括第一晶体管,与第一晶体管并联连接的第二晶体管,耦合到第一和第二晶体管的噪声反馈和偏置网络,耦合到第一和第二晶体管的平面耦合谐振器网络 第二晶体管,以及用于动态调谐平面耦合谐振器网络的谐振频率和第一和第二晶体管的结电容的装置。 动态调谐装置具有耦合以跨越第一和第二晶体管的每个结的跨多个电容元件。 电容元件具有串联耦合到第一电容器的变容二极管和与变容二极管串联耦合的第二电容器。 版权所有(C)2007,JPO&INPIT