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    • 1. 发明申请
    • Crystal oscillator
    • 水晶振荡器
    • US20080106347A1
    • 2008-05-08
    • US11978728
    • 2007-10-30
    • Fumio AsamuraTakeo OitaKatsuaki Sakamoto
    • Fumio AsamuraTakeo OitaKatsuaki Sakamoto
    • H03B5/36
    • H03B5/04H03B5/368
    • There is disclosed a crystal oscillator in which when a base ground type crystal oscillation circuit is used, a temperature characteristic of an oscillation frequency is improved to omit a measurement operation of the temperature characteristic of the oscillator, and manufacturing is facilitated to reduce a manufacturing time. In the crystal oscillator, a base ground type crystal oscillation circuit of a transistor is used, a power voltage is applied to a collector C of a transistor Q1 via series connection of an inductor L4 for resonance and a resistance R9, a crystal unit X1 is disposed in a loop which returns to an emitter E of the transistor Q1 from a point between the inductor L4 for resonance and the resistance R9, and further, in the loop, a first parallel circuit in which a stationary capacitor C34 having a negative temperature coefficient and a stationary capacitor C10 having a zero temperature coefficient are connected in parallel with each other is inserted between an oscillation output taking point and the collector C of the transistor Q1.
    • 公开了一种晶体振荡器,其中当使用基极型晶体振荡电路时,提高振荡频率的温度特性以省略振荡器的温度特性的测量操作,并且便于制造以减少制造时间 。 在晶体振荡器中,使用晶体管的基极型晶体振荡电路,通过串联连接用于谐振的电感器L 4和电阻R 9,晶体管Q 1的晶体管Q1向晶体管Q 1的集电极C施加电压 单元X 1设置在从谐振电感器L 4和电阻R 9之间的点返回到晶体管Q 1的发射极E的环路中,并且在该环路中,第一并联电路 具有负温度系数的电容器C 34和具有零温度系数的固定电容器C 10彼此并联连接,插入在晶体管Q 1的振荡输出取样点和集电极C之间。
    • 2. 发明授权
    • Crystal oscillator
    • 水晶振荡器
    • US07649427B2
    • 2010-01-19
    • US11978728
    • 2007-10-30
    • Fumio AsamuraTakeo OitaKatsuaki Sakamoto
    • Fumio AsamuraTakeo OitaKatsuaki Sakamoto
    • H03L1/04H03B5/36
    • H03B5/04H03B5/368
    • A crystal oscillator in which a temperature characteristic of an oscillation frequency is improved to omit a measurement operation of the temperature characteristic of the oscillator, and manufacturing is facilitated to reduce a manufacturing time. In the crystal oscillator, a power voltage is applied to a collector of a transistor via series connection of an inductor for resonance and a resistance, a crystal unit is disposed in a loop which returns to an emitter of the transistor from a point between the inductor L4 and the resistance, and further, in the loop, a first parallel circuit in which a stationary capacitor having a negative temperature coefficient and a stationary capacitor having a zero temperature coefficient are connected in parallel with each other is inserted between an oscillation output taking point and the collector.
    • 提高了振荡频率的温度特性以省略振荡器的温度特性的测量操作的晶体振荡器,并且便于制造以减少制造时间。 在晶体振荡器中,通过用于谐振的电感器和电阻器的串联连接将电源电压施加到晶体管的集电极,晶体单元设置在从电感器之间的点返回到晶体管的发射极的环路中 L4和电阻,此外,在环路中,将具有负温度系数的固定电容器和具有零温度系数的固定电容器彼此并联的第一并联电路彼此并联连接在振荡输出取样点 和收藏家。
    • 3. 发明授权
    • Coplanar line based high frequency oscillator
    • 基于共面线的高频振荡器
    • US06909333B2
    • 2005-06-21
    • US10329861
    • 2002-12-26
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • H03B7/14H03B9/14H03B5/18
    • H03B9/147
    • A high frequency oscillator has a substrate made of, for example, a dielectric material, a resonator circuit disposed on one principal surface of the substrate and formed of a finite-length coplanar line having a signal line and a ground conductor arranged along the signal line on both sides thereof, a negative resistance element for connecting between the signal line and the ground conductor, and an output line routed on the other principal surface of the substrate and electromagnetically coupled to the resonator circuit through the substrate. A Gunn diode is preferably used for the negative resistance element, and is connected, for example, in a substantially central region of the signal line. The output line preferably forms a microstrip line structure together with the ground conductor.
    • 高频振荡器具有由例如介电材料制成的衬底,设置在衬底的一个主表面上的谐振器电路,并且由具有沿信号线布置的信号线和接地导体的有限长度的共面线构成 在其两侧具有用于连接信号线和接地导体之间的负电阻元件,以及在衬底的另一个主表面上布线的输出线,并通过衬底电磁耦合到谐振器电路。 耿氏二极管优选用于负电阻元件,并且例如连接在信号线的大致中心区域。 输出线优选地与接地导体一起形成微带线结构。
    • 4. 发明授权
    • Injection locked high frequency oscillator
    • 注射锁定高频振荡器
    • US07145404B2
    • 2006-12-05
    • US11046515
    • 2005-01-28
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • H03B7/12
    • H03B5/1852
    • A push-push high frequency oscillator comprises a pair of amplifiers for oscillation, a loop-shaped microstrip line for connecting inputs of the pair of amplifiers to each other and connecting outputs of the pair of amplifiers to each other, a slot line disposed between the inputs and the outputs of the pair of amplifiers for electromagnetically coupling with the microstrip line, a nonlinear circuit for enhancing the level of harmonic components in an applied synchronization signal, a coupler circuit for electromagnetically coupling the output of the nonlinear circuit to the microstrip line, and a filter circuit disposed at the output of the nonlinear circuit. The filter circuit filters harmonic components of the synchronization signal such that the two oscillation systems are injected with the same frequency components as the fundamental wave or frequency components twice as high as the fundamental wave to increase frequency stability.
    • 推挽式高频振荡器包括一对用于振荡的放大器,一个环形微带线,用于将一对放大器的输入彼此连接并将一对放大器的输出彼此连接,一条槽线设置在 用于与微带线电磁耦合的一对放大器的输入和输出,用于增强所施加的同步信号中的谐波分量的非线性电路,用于将非线性电路的输出电磁耦合到微带线的耦合器电路, 以及设置在非线性电路的输出端的滤波电路。 滤波器电路对同步信号的谐波分量进行滤波,使得两个振荡系统以与基波相同的基波或频率分量相同的频率分量被注入,以提高频率稳定性。
    • 8. 发明授权
    • Planar high frequency oscillator
    • 平面高频振荡器
    • US07145405B2
    • 2006-12-05
    • US11046516
    • 2005-01-28
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • H03B7/12
    • H03B5/1852
    • A planar harmonic high frequency oscillator comprises a pair of amplifiers for oscillation, a micro-strip line for connecting between inputs of the pair of amplifiers and between outputs of the amplifiers, a slot line disposed between the inputs and the outputs of the pair of the amplifiers for electromagnetically coupling with the micro-strip line, an output line connected to the micro-strip line at a position at which the micro-strip line traverses the slot line between the inputs or outputs of the pair of amplifiers, and an electronic device for connecting conductors on both sides of the slot line, and for controlling an electromagnetic wave field of the slot line in response to a control signal applied thereto. Two oscillation systems which oscillate in opposite phases with respect to the fundamental wave of oscillation are formed to generate an even-order harmonic of the fundamental wave.
    • 平面谐波高频振荡器包括用于振荡的一对放大器,用于连接放大器对的输入之间和放大器的输出之间的微带线,设置在该对放大器的输入和输出之间的时隙线 用于与微带线电磁耦合的放大器,在微带线穿过该对放大器的输入或输出之间的缝隙线的位置连接到微带线的输出线,以及电子器件 用于连接槽线两侧的导体,并响应于施加到其上的控制信号来控制缝线的电磁波场。 形成相对于基波的相位振荡的两个振荡系统,以产生基波的偶次谐波。
    • 9. 发明授权
    • Planar array antenna
    • 平面阵列天线
    • US07095373B2
    • 2006-08-22
    • US11137107
    • 2005-05-25
    • Masayoshi AikawaEisuke NishiyamaFumio AsamuraTakeo Oita
    • Masayoshi AikawaEisuke NishiyamaFumio AsamuraTakeo Oita
    • H01Q1/38
    • H01Q21/065
    • A planar array antenna using a multi-layer substrate having an intermediate layer conductor in a laminated face comprises: four pieces of planar antenna elements disposed at each of geometrically square shaped apexes; first and second slot lines formed in the intermediate layer conductor, and intersecting each other; first to fourth microstrip lines formed along each side of geometrical squares so as to be coupled to each antenna element, and at the same time, electromagnetically coupled to first and second slot lines at both ends of these slot lines; and fifth and sixth microstrip lines, the top end sides thereof traversing the first and second slot lines, respectively, so as to be electromagnetically coupled to the first and second slot lines.
    • 使用在层叠面中具有中间层导体的多层基板的平面阵列天线包括:四个平面天线元件,设置在每个几何方形的顶点处; 第一和第二槽线形成在中间层导体中并彼此交叉; 沿着几何正方形的每一侧形成的第一至第四微带线,以便耦合到每个天线元件,同时电磁耦合到这些槽线两端的第一和第二槽线; 以及第五和第六微带线,其顶端侧分别穿过第一和第二槽线,以便电磁耦合到第一和第二槽线。