发明名称 |
Voltage-controlled oscillator with diode and passive element to increase range of oscillating frequency |
摘要 |
A Colpitts-type voltage-controlled oscillator includes a transistor having a collector which is connected to a power terminal through a stripline. A capacitor is connected between the collector and the emitter thereof. A diode is connected to the capacitor and an inductor is connected to a point between the capacitor and diode. Another capacitor is connected between the base and the emitter of the transistor. An inductive reactance is formed by a stripline which is connected between the base of the transistor and the ground, two capacitors for DC blocking, and a variable-capacitance diode. Bypass capacitors are connected between the collector of the transistor and the ground. A resistor is connected between the emitter of the transistor and the ground. Two other resistors are provided for dividing a power voltage at the power terminal and for supplying a base voltage to the transistor. Turning the diode on and off allows the oscillating frequency of the voltage-controlled oscillator to vary by a large amount.
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申请公布号 |
US6008702(A) |
申请公布日期 |
1999.12.28 |
申请号 |
US19980045956 |
申请日期 |
1998.03.23 |
申请人 |
MURATA MANUFACTURING CO., LTD. |
发明人 |
YAMAMOTO, HIROYUKI |
分类号 |
H03B5/12;H03B5/18;(IPC1-7):H03B5/12 |
主分类号 |
H03B5/12 |
代理机构 |
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主权项 |
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地址 |
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