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    • 33. 发明授权
    • 3 밴드전환형 발진기
    • 3드전환형발진기
    • KR100408117B1
    • 2003-12-03
    • KR1020010030443
    • 2001-05-31
    • 알프스 덴키 가부시키가이샤
    • 나카노가즈히로노우미히로키하세가와이사오
    • H03B5/08
    • H03B5/1847H03B5/1203H03B5/1231H03B5/1243H03B5/1262H03B2201/0208H03B2201/0258H03B2201/038
    • In a three-band switching oscillator, a switching circuit is provided to switch the operating conditions of a first and second voltage-controlled oscillator and to switch an oscillation frequency band of the first voltage-controlled oscillator. The switching circuit switches a first switch in accordance with a switching voltage inputted to a first switching terminal and switches an oscillation frequency band in accordance with a switching voltage inputted to a second switching terminal. Only when a high-level switching voltage is inputted to the second switching terminal, the second switch is placed into an open condition by a high-level switching voltage inputted to the first switching terminal and placed into a closed condition by a low-level switching voltage inputted thereto, and when a low-level switching voltage is inputted to the second switching terminal, the second switch is placed into the open condition irrespective of the switching voltage inputted to the first switching terminal.
    • 在三频切换振荡器中,提供切换电路以切换第一和第二电压控制振荡器的操作条件并切换第一电压控制振荡器的振荡频带。 开关电路根据输入到第一开关端子的开关电压来切换第一开关,并且根据输入到第二开关端子的开关电压切换振荡频带。 仅当高电平切换电压输入到第二切换端子时,第二开关通过输入到第一切换端子的高电平切换电压置于断开状态,并通过低电平切换置于闭合状态 并且当低电平切换电压输入到第二切换端子时,不管输入到第一切换端子的切换电压如何,第二开关都被置于开路状态。
    • 34. 发明公开
    • 백게이트를 이용한 저전력 4위상 전압 제어 발진기
    • 低功耗4相电压控制振荡器使用后门
    • KR1020030071748A
    • 2003-09-06
    • KR1020030058741
    • 2003-08-25
    • 학교법인 한국정보통신학원
    • 이상국김혜령
    • H03B5/00
    • H03K3/354H03B5/1215H03B5/1228H03B5/1243H03B2201/0208
    • PURPOSE: A low power 4-phase voltage control oscillator using a back gate is provided to implement coupling between a first and a second delay cells without utilizing an additional coupling transistor. CONSTITUTION: A low power 4-phase voltage control oscillator using a back gate includes a first delay cell(100) for outputting a first and a second dynamic phase signals, each of the first and the second dynamic phase signals having a phase different from each other, and a second delay cell(200) for outputting a first and a second orthogonal phase signals, each of the first and the second orthogonal phase signals having a phase different from each other. The first delay cell(100) includes a first switching transistor(MN41), a second switching transistor(MN42), an LC resonance circuit(110) and a first current source(ISS1). The second delay cell(200) includes a third switching transistor(MN43), a fourth switching transistor(MN44), an LC resonance circuit(210) and a second current source(ISS2). In the low power 4-phase voltage control oscillator, the first and the second orthogonal phase signals are applied to the back gates of the first and the second switching transistors(MN41,MN42) and the first and the second dynamic phase signals are applied to the back gates of the third and the fourth switching transistors(MN43,MN44).
    • 目的:提供使用背栅的低功率4相电压控制振荡器,以实现第一和第二延迟单元之间的耦合,而不需要额外的耦合晶体管。 构成:使用背栅的低功率4相电压控制振荡器包括用于输出第一和第二动态相位信号的第一延迟单元(100),第一和第二动态相位信号中的每一个具有不同于每个的相位 以及用于输出第一和第二正交相位信号的第二延迟单元(200),所述第一和第二正交相位信号中的每一个具有彼此不同的相位。 第一延迟单元(100)包括第一开关晶体管(MN41),第二开关晶体管(MN42),LC谐振电路(110)和第一电流源(ISS1)。 第二延迟单元(200)包括第三开关晶体管(MN43),第四开关晶体管(MN44),LC谐振电路(210)和第二电流源(ISS2)。 在低功率4相电压控制振荡器中,第一和第二正交相位信号被施加到第一和第二开关晶体管(MN41,MN42)的后栅极,第一和第二动态相位信号被施加到 第三和第四开关晶体管(MN43,MN44)的背栅极。
    • 35. 发明公开
    • 소스 단자의 병렬 커플링을 이용한 4위상 전압 제어 발진기
    • 使用源极并联的正弦电压控制振荡器
    • KR1020030070576A
    • 2003-08-30
    • KR1020030055429
    • 2003-08-11
    • 학교법인 한국정보통신학원
    • 이상국신소봉최형철
    • H03B27/00
    • H03K3/354H03B5/1215H03B5/1228H03B5/1243H03B27/00H03K3/0322
    • PURPOSE: A quadrature voltage controlled oscillator using parallel coupling of a source terminal is provided to reduce the low frequency noise generated from plural coupling transistors by improving a structure of the quadrature voltage controlled oscillator. CONSTITUTION: A quadrature voltage controlled oscillator using parallel coupling of a source terminal includes the first delay cell(410) for outputting the first and the second inphase signals and the second delay cell(430) for outputting the first and the second orthogonal phase signals. The first delay cell includes the first differential voltage controlled oscillator(401) and the first and the second coupling transistors(MN41,MN42). The first differential voltage controlled oscillator is connected between a power source and the first current source. The first and the second coupling transistors are used for changing the first the intensity and the direction of the current of the second terminal to the third terminal according to the intensity of the first and the second orthogonal phase signals. The second delay cell includes the second differential voltage controlled oscillator(403) and the third and the fourth coupling transistors(MN43,MN44). The second differential voltage controlled oscillator is connected between the power source and the second current source. The third and the fourth coupling transistors are used for changing the first the intensity and the direction of the current of the second terminal to the third terminal according to the intensity of the first and the second inphase signals.
    • 目的:提供使用源极并联耦合的正交压控振荡器,以通过改善正交压控振荡器的结构来减少由多个耦合晶体管产生的低频噪声。 构成:使用源极并联耦合的正交压控振荡器包括用于输出第一和第二同相信号的第一延迟单元(410)和用于输出第一和第二正交相位信号的第二延迟单元(430)。 第一延迟单元包括第一差分压控振荡器(401)和第一和第二耦合晶体管(MN41,MN42)。 第一差分压控振荡器连接在电源和第一电流源之间。 第一和第二耦合晶体管用于根据第一和第二正交相位信号的强度将第一端子的电流的强度和方向改变到第三端子。 第二延迟单元包括第二差分电压控制振荡器(403)和第三和第四耦合晶体管(MN43,MN44)。 第二差分压控振荡器连接在电源和第二电流源之间。 第三和第四耦合晶体管用于根据第一和第二同相信号的强度将第一端子的电流强度和方向改变到第三端子。
    • 37. 发明公开
    • FM 신호 발진 회로 및 변조 레벨 보정 방법
    • FM信号振荡电路和调制电平校正方法
    • KR1020020002293A
    • 2002-01-09
    • KR1020010037994
    • 2001-06-29
    • 가부시끼가이샤 도시바
    • 나가따미노루
    • H03C3/00H03B5/12H04L27/12
    • H03C3/04H03B5/1215H03B5/1231H03B5/1243H03B5/1293
    • PURPOSE: To integrate a circuit only with an ordinary integrated circuit production process by preventing the degree of modulation at the time of frequency modulation from being changed by a transmitting frequency even when a variable capacity diode for graded junction or abrupt junction is used for a resonance circuit. CONSTITUTION: A modulation signal is amplified by a variable gain amplifier to change a gain with a control voltage, which is applied to the variable capacity diode of the resonance circuit, so as to fix the degree of modulation at the time of frequency modulation regardless of an oscillation frequency to be changed by the control voltage. Thus, after the level of the modulation signal is set, the signal is superimposed on the control voltage and impressed to the variable capacity diode so that a frequency modulation signal having the fixed degree of modulation can be provided from a driver circuit regardless of the control voltage. Thus, the FM signal oscillation circuit can be integrated only by the ordinary integrated circuit production process and the circuit can be produced at low cost.
    • 目的:即使将用于渐变结或突变结的可变电容二极管用于谐振时,仅通过防止调频时的调制度由发送频率改变而将电路集成到普通的集成电路制作工艺中 电路。 构成:调制信号由可变增益放大器放大,以便将控制电压改变为增益,该控制电压施加到谐振电路的可变容量二极管,以便固定频率调制时的调制度,而不管 由控制电压改变的振荡频率。 因此,在调制信号的电平被置位之后,信号叠加在控制电压上并被施加到可变容量二极管,使得可以从驱动器电路提供具有固定调制度的调制信号,而不管控制 电压。 因此,FM信号振荡电路只能通过普通的集成电路制造工艺进行集成,并且可以以低成本制造电路。