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    • 1. 发明授权
    • 전압제어발진회로
    • KR100408118B1
    • 2003-12-03
    • KR1020010032715
    • 2001-06-12
    • 알프스 덴키 가부시키가이샤
    • 고바야시히로키이카라시야스히로치바유타카
    • H03B5/08
    • H03J5/244H03B2201/0208H03J3/185H03L7/099H03L2207/06
    • In a voltage controlled oscillator for switching oscillation frequency bands by supplying a band switching signal to an LC resonator circuit that is connected in a phase locked loop having a phase comparator and a loop filter and sets oscillation frequencies, the LC resonator circuit includes at least two inductor elements the connection and non-connection of a part of which are switched in response to a band switching signal and a capacitor element in which a voltage variable capacitor element whose capacitance value is adjusted in response to the control voltage from the loop filter is connected in series to impedance elements acting as a composite element that exhibits a capacitance value in oscillation frequency ranges. With this arrangement, when an oscillation signal is selectively output in a high or low frequency band by switching the LC resonator circuit, the voltage controlled oscillator can increase the difference between the rates of change Kv in the high and low frequency bands.
    • 在用于通过向LC谐振器电路提供频带切换信号来切换振荡频带的压控振荡器中,所述LC谐振器电路连接在具有相位比较器和环路滤波器的锁相环中并且设置振荡频率,所述LC谐振器电路包括至少两个 响应于频带切换信号切换其一部分的连接和非连接的电感元件和电容元件,其中响应于来自环路滤波器的控制电压来调节其电容值的电压可变电容元件被连接 串联到用作复合元件的阻抗元件,所述复合元件在振荡频率范围内呈现电容值。 采用这种结构,当振荡信号通过切换LC谐振器电路在高频带或低频带中选择性地输出时,压控振荡器可以增加高频带和低频带中的变化率Kv之间的差值。
    • 2. 发明公开
    • 듀얼밴드 발진기
    • 双带振荡器
    • KR1020060117267A
    • 2006-11-16
    • KR1020060042936
    • 2006-05-12
    • 알프스 덴키 가부시키가이샤
    • 고바야시히로키
    • H03B5/24H03B5/18
    • H03B5/1231H03B5/1218H03B5/1243H03B2200/0046H03B2200/0048H03B2201/0266
    • A dual band oscillator is provided to prevent an oscillation signal outputted from one side oscillation transistor from being attenuated by an inductor connected to a collector of the other side oscillation transistor. In a dual band oscillator, a first oscillation transistor(11) outputs an oscillation signal of a first frequency bandwidth from a collector. A first inductor(12) supplies power to the collector of the first oscillation transistor(11). A first switching device(16) converts an operation/non-operation of the first oscillation transistor(11). The second oscillation transistor(21) outputs an oscillation signal of a second frequency bandwidth from a collector. A second inductor(22) supplies power to the collector of the second oscillation transistor(21). A second switching device(26) switches an operation/non-operation of the second oscillation transistor(21). An output terminal(30) outputs the oscillation signal of the first frequency bandwidth or the oscillation signal of the second frequency bandwidth to outside. And, the dual band oscillator is inserted between the first inductor(12) and the output terminal(30) through the first switching device(16) and inserted between the second inductor(22) and the output terminal(30) through the second switching device(26).
    • 提供双频带振荡器以防止从一侧振荡晶体管输出的振荡信号被连接到另一侧振荡晶体管的集电极的电感器衰减。 在双频带振荡器中,第一振荡晶体管(11)从集电极输出第一频带的振荡信号。 第一电感器(12)向第一振​​荡晶体管(11)的集电极供电。 第一开关器件(16)转换第一振荡晶体管(11)的操作/非操作。 第二振荡晶体管(21)从集电极输出第二频带的振荡信号。 第二电感器(22)向第二振荡晶体管(21)的集电极供电。 第二开关器件(26)切换第二振荡晶体管(21)的操作/非操作。 输出端子(30)将第一频带的振荡信号或第二频带的振荡信号输出到外部。 并且,通过第一开关器件(16)将双频带振荡器插入到第一电感器(12)和输出端子(30)之间,并通过第二开关插入到第二电感器(22)和输出端子(30)之间 装置(26)。
    • 7. 发明公开
    • 트랜지스터 발진회로
    • 晶体管振荡电路
    • KR1020060128741A
    • 2006-12-14
    • KR1020060052034
    • 2006-06-09
    • 알프스 덴키 가부시키가이샤
    • 고바야시히로키다가이마사키마키타류타로고즈도루
    • H03B5/24H03B5/12
    • H03B5/1847H03B5/04
    • A transistor oscillatory circuit is provided to reduce a change of an oscillating frequency irrespective of a change of a supply voltage by suppressing a change of internal capacitance between a collector and a base of an oscillating transistor or between the collector and an emitter of the oscillating transistor. A transistor oscillatory circuit includes an oscillating transistor(3) having an emitter, a base, and a collector. The emitter is connected through an emitter load resistor(8) to the ground. A resonance circuit(2) is connected between the base and the ground. The collector is connected to a power supply terminal. A base bias resistor is connected between the base and the collector of the oscillating transistor and between the base and the emitter of the oscillating transistor.
    • 提供晶体管振荡电路以通过抑制振荡晶体管的集电极和基极之间或晶体管的集电极和发射极之间的内部电容的变化来减小振荡频率的变化,而不管电源电压的变化 。 晶体管振荡电路包括具有发射极,基极和集电极的振荡晶体管(3)。 发射极通过发射极负载电阻(8)连接到地。 谐振电路(2)连接在基座和地之间。 收集器连接到电源端子。 基极偏置电阻连接在振荡晶体管的基极和集电极之间,并连接在振荡晶体管的基极和发射极之间。