发明名称 |
Integrated circuit oscillators having microelectromechanical resonators therein with parasitic impedance cancellation |
摘要 |
An integrated circuit oscillator includes a microelectromechanical (MEM) resonator having input and output terminals. An oscillation sustaining circuit is provided. The oscillation sustaining circuit is electrically coupled between the input and output terminals of the microelectromechanical resonator. The oscillation sustaining circuit includes a sustaining amplifier and a negative impedance circuit electrically coupled to the sustaining amplifier. The negative impedance circuit is configured to increase a tuning range of the oscillator by at least partially cancelling a parasitic shunt capacitance associated with the microelectromechanical resonator.
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申请公布号 |
US8022779(B2) |
申请公布日期 |
2011.09.20 |
申请号 |
US20090570592 |
申请日期 |
2009.09.30 |
申请人 |
GEORGIA TECH RESEARCH CORPORATION |
发明人 |
AYAZI FARROKH;LAVASANI SEYED HOSSEIN MIRI |
分类号 |
H03B5/30 |
主分类号 |
H03B5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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