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    • 63. 发明授权
    • Frequency shift key modulating oscillator
    • 频移键调制振荡器
    • US06317009B2
    • 2001-11-13
    • US09836047
    • 2001-04-16
    • John P. Hill
    • John P. Hill
    • H03C300
    • H03C3/16H03B5/1847H03B5/187H03B2201/017
    • The present invention teaches a system for selectably oscillating at a first or a second oscillating frequency. The system comprises an oscillator for providing an oscillating output. Moreover, the system comprises a switching device for selecting a first or a second impedance in response to a select signal having a voltage. Each of the first and second impedances are fixed independently of the select signal voltage such that the oscillating output oscillates at the first oscillating frequency when the first impedance is provided and oscillates at the second oscillating frequency when the second impedance is provided.
    • 本发明教导了一种用于以第一或第二振荡频率可选地振荡的系统。 所述系统包括用于提供振荡输出的振荡器。 此外,该系统包括用于响应于具有电压的选择信号选择第一或第二阻抗的开关装置。 第一和第二阻抗中的每一个都是独立于选择信号电压固定的,使得当提供第一阻抗时,振荡输出以第一振荡频率振荡,并且当提供第二阻抗时以第二振荡频率振荡。
    • 65. 发明授权
    • Microwave oscillation circuit
    • 微波振荡电路
    • US5079524A
    • 1992-01-07
    • US665755
    • 1991-03-07
    • Hideo Sugawara
    • Hideo Sugawara
    • H03B5/18H03B19/18
    • H03B5/1876H03B5/187H03B2200/0024H03B2200/0034H03B2200/0086H03B5/1847
    • The microwave oscillation circuit provides a transistor having the collector electrode grounded, the base electrode connected to a resonator circuit determining the oscillation frequency, and the emitter electrode connected to an output open stub. An output transmission line is placed parallel to the output open stub for the output power supplied from the output open stub to be output via an end of the output transmission line to a buffer amplifier. A resistor having an impedance equal to a characteristic impedance of the output transmission line connects a stub circuit to an open end of the output transmission line. The stub circuit exhibits an infinite impedance at the oscillation frequency. At the oscillation frequency, the resistor floats due to the infinite impedance of the stub circuit so that all the oscillation power supplied from the output open stub is output to the buffer amplifier, without being consumed by the resistor. At frequencies other than the oscillation frequency, where the buffer amplifier is likely to be unstable, the output impedance of the output transmission line is damped enough to prevent the buffer amplifier from its unstable condition, because the resistor is grounded by a relatively low impedance of the stub circuit.
    • 微波振荡电路提供了集电极接地的晶体管,基极连接到确定振荡频率的谐振电路,并且发射极连接到输出开路短路。 输出传输线与输出开路短路并联放置,用于从输出开路短路提供的输出功率经由输出传输线的一端输出到缓冲放大器。 具有等于​​输出传输线的特性阻抗的阻抗的电阻将短截线电路连接到输出传输线的开路端。 短路电路在振荡频率处呈现无限阻抗。 在振荡频率下,由于短路电阻的无限阻抗,电阻器浮起,使得从输出开路短截线提供的所有振荡功率输出到缓冲放大器,而不被电阻器消耗。 在缓冲放大器可能不稳定的振荡频率以外的频率处,输出传输线路的输出阻抗足够大,以防止缓冲放大器处于不稳定状态,因为电阻器通过相对较低的阻抗 短线电路。
    • 69. 发明授权
    • Solid-state MIC oscillator
    • 固态麦克风振荡器
    • US4331940A
    • 1982-05-25
    • US156195
    • 1980-06-03
    • Tomoki Uwano
    • Tomoki Uwano
    • H03B9/12H03B5/04H03B5/18H03B7/08H03B9/14H03B7/14
    • H03B9/148H03B5/187H03B2009/126H03B2200/0032H03B5/04H03B5/1847H03B7/08
    • A solid-state MIC oscillator in the form of a planar transmission circuit has a band rejection filter as a load circuit of an oscillation device. The band rejection filter is a resonator coupled to a transmission line which connects the oscillation device with an oscillator load. The load impedance of the oscillation device is adjusted to the oscillating condition by the position of the resonator. A simple capacitive susceptance stub is connected to the transmission line near the coupling point of the resonator. Variation of the oscillator frequency characteristics versus temperature caused by variation of the oscillator load is improved in an excellent manner due to the provision of the simple capacitive susceptance stub.
    • 作为平面发送电路形式的固态MIC振荡器具有作为振荡装置的负载电路的带阻滤波器。 带阻滤波器是耦合到将振荡器件与振荡器负载连接的传输线路的谐振器。 通过谐振器的位置将振荡装置的负载阻抗调节到振荡状态。 简单的电容电纳短截线连接到谐振器耦合点附近的传输线。 由于提供简单的电容电容短截线,由于振荡器负载的变化引起的振荡器频率特性对温度的变化以极佳的方式得到改善。