发明申请
US20050007204A1 High spectral purity microwave oscillator using air-dielectric cavity
失效
使用空气介电腔的高光谱纯度微波振荡器
- 专利标题： High spectral purity microwave oscillator using air-dielectric cavity
- 专利标题（中）： 使用空气介电腔的高光谱纯度微波振荡器
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申请号： US10885118申请日： 2004-07-07
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公开(公告)号： US20050007204A1公开(公告)日： 2005-01-13
- 发明人: David Howe , Amitava Gupta , Craig Nelson , Fred Walls
- 申请人： David Howe , Amitava Gupta , Craig Nelson , Fred Walls
- 申请人地址： US MD Gaithersburg
- 专利权人： The National Institute of Standards & Technology, Government of the United States of America,,as represented by the Secretary of Commerce
- 当前专利权人： The National Institute of Standards & Technology, Government of the United States of America,,as represented by the Secretary of Commerce
- 当前专利权人地址： US MD Gaithersburg
- 主分类号： H03B5/18
- IPC分类号： H03B5/18 ; H03B9/12 ; H03L7/00 ; H03L7/081 ; H03L7/099
摘要：
A high spectral purity microwave oscillator is provided. The Oscillator uses an air-dielectric cavity and employs the known carrier-suppression technique. In one embodiment, the oscillator employs a high-Q cavity to self-sustain an oscillating signal formed by feeding back into its input a power-amplified output signal of the cavity in which residual phase noise in the amplifier stages is suppressed. A bandpass filter selects the cavity mode. FIG. 1 illustrates this embodiment. Another embodiment suppresses the noise of a voltage-controlled oscillator whose frequency and power-amplified output interrogates the cavity mode. FIG. 2 illustrates this embodiment.
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