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1. 发明申请

US20100271144A1 Clock, Frequency Reference, and Other Reference Signal Generator with Frequency Stability Over Temperature Variation 有权
标题翻译：时钟，频率参考和其他参考信号发生器，频率稳定度超过温度变化
公开(公告)号：US20100271144A1
公开(公告)日：2010-10-28
申请号：US12766205
申请日：2010-04-23
申请人： Michael Shannon McCorquodale , Scott Michael Pernia , Vidyabhusan Gupta , Nathaniel Charles Gaskin , Nader Fayyaz
发明人： Michael Shannon McCorquodale , Scott Michael Pernia , Vidyabhusan Gupta , Nathaniel Charles Gaskin , Nader Fayyaz
IPC分类号： H03B5/12
CPC分类号： H03B5/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1271 , H03B5/1293
摘要： Exemplary embodiments provide a reference signal generator having a reference or center frequency within a predetermined variance over variations in temperature within a specified range. An exemplary apparatus comprises a reference resonator to generate a first reference signal having a resonant frequency, with the reference resonator having a first temperature dependence; and a plurality of switchable circuits, with at least one switchable circuit providing a second temperature dependence opposing the first temperature dependence to maintain the resonant frequency within a predetermined variance over a temperature variation. A wide variety of switchable circuits are disclosed, including a transistor having an on resistance value greater than a nominal resistance, a resistor coupled to a transistor or other switch, and circuit comprising a first reactance coupled to a first switch, with a second reactance coupled to a resistance and a second switch coupled in series to the second reactance or to the resistance. Various coatings may also be applied to an integrated circuit embodiment, such as a silicone coating on a first surface and a metal layer on a second surface.
摘要翻译：示例性实施例提供了参考信号发生器，其具有在指定范围内的温度变化的预定方差内的参考或中心频率。示例性装置包括参考谐振器，以产生具有谐振频率的第一参考信号，参考谐振器具有第一温度依赖性; 以及多个可切换电路，其中至少一个可切换电路提供与第一温度依赖性相反的第二温度依赖性，以将谐振频率保持在温度变化以上的预定变化范围内。公开了各种各样的可切换电路，包括具有大于标称电阻的导通电阻值的晶体管，耦合到晶体管或其它开关的电阻器，以及包括耦合到第一开关的第一电抗的电路，第二电抗耦合耦合到与第二电抗或电阻串联耦合的电阻和第二开关。各种涂层也可以应用于集成电路实施例，例如第一表面上的硅氧烷涂层和第二表面上的金属层。

2. 发明授权

US08134414B2 Clock, frequency reference, and other reference signal generator with frequency stability over temperature variation 有权
标题翻译：时钟，频率参考和其他参考信号发生器，频率稳定度超过温度变化
公开(公告)号：US08134414B2
公开(公告)日：2012-03-13
申请号：US12766205
申请日：2010-04-23
申请人： Michael Shannon McCorquodale , Scott Michael Pernia , Vidyabhusan Gupta , Nathaniel Charles Gaskin , Nader Fayyaz
发明人： Michael Shannon McCorquodale , Scott Michael Pernia , Vidyabhusan Gupta , Nathaniel Charles Gaskin , Nader Fayyaz
IPC分类号： H03B5/12 , H03L1/00 , H03L5/00 , H03L7/099
CPC分类号： H03B5/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1271 , H03B5/1293
摘要： Exemplary embodiments provide a reference signal generator having a reference or center frequency within a predetermined variance over variations in temperature within a specified range. An exemplary apparatus comprises a reference resonator to generate a first reference signal having a resonant frequency, with the reference resonator having a first temperature dependence; and a plurality of switchable circuits, with at least one switchable circuit providing a second temperature dependence opposing the first temperature dependence to maintain the resonant frequency within a predetermined variance over a temperature variation. A wide variety of switchable circuits are disclosed, including a transistor having an on resistance value greater than a nominal resistance, a resistor coupled to a transistor or other switch, and circuit comprising a first reactance coupled to a first switch, with a second reactance coupled to a resistance and a second switch coupled in series to the second reactance or to the resistance. Various coatings may also be applied to an integrated circuit embodiment, such as a silicone coating on a first surface and a metal layer on a second surface.
摘要翻译：示例性实施例提供了参考信号发生器，其具有在指定范围内的温度变化的预定方差内的参考或中心频率。示例性装置包括参考谐振器，以产生具有谐振频率的第一参考信号，参考谐振器具有第一温度依赖性; 以及多个可切换电路，其中至少一个可切换电路提供与第一温度依赖性相反的第二温度依赖性，以将谐振频率保持在温度变化以上的预定变化范围内。公开了各种各样的可切换电路，包括具有大于标称电阻的导通电阻值的晶体管，耦合到晶体管或其它开关的电阻器，以及包括耦合到第一开关的第一电抗的电路，第二电抗耦合耦合到与第二电抗或电阻串联耦合的电阻和第二开关。各种涂层也可以应用于集成电路实施例，例如第一表面上的硅氧烷涂层和第二表面上的金属层。

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