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1. 发明授权

US08324978B2 Crystal oscillator clock circuit 失效
标题翻译：晶振时钟电路
公开(公告)号：US08324978B2
公开(公告)日：2012-12-04
申请号：US12936023
申请日：2009-03-25
申请人： Sebastian Loeda
发明人： Sebastian Loeda
IPC分类号： H03L5/00
CPC分类号： H03L5/00 , H03B5/04 , H03B5/36
摘要： A crystal oscillator clock circuit which facilitates switching its output between an internally generated clock signal and an externally generated clock signal. A feedback loop detects the presence of an externally generated clock signal applied to an output pin of a crystal oscillator circuit and powers down the internally generated clock signal. As a result, the crystal oscillator clock circuit simply passes the externally generated clock signal as its output signal.
摘要翻译：一种晶体振荡器时钟电路，有助于在内部产生的时钟信号和外部产生的时钟信号之间切换其输出。反馈回路检测到施加到晶体振荡器电路的输出引脚的外部产生的时钟信号的存在，并关闭内部产生的时钟信号。结果，晶体振荡器时钟电路简单地将外部产生的时钟信号作为其输出信号。

2. 发明授权

US08244195B2 Low noise amplifier 失效
标题翻译：低噪声放大器
公开(公告)号：US08244195B2
公开(公告)日：2012-08-14
申请号：US12937573
申请日：2009-03-25
申请人： David Wilson
发明人： David Wilson
IPC分类号： H04B7/06 , H04K3/00
CPC分类号： H03G1/0029 , H03G1/0017 , H03G1/0088
摘要： A wideband tuneable low noise amplifier that is capable of receiving signals over a wide range of frequencies, providing tuneable filtering to remove out of band interferer signals, and providing variable gain for a wide range of frequencies. To accommodate variable gain, the low noise amplifier has an amplifier stage comprising two gain stages, and the relationship between the gain stages is controlled responsive to changes in the voltage gain of an input stage. Linearity monitoring combined with Q-enhance may be employed to increase performance at low signal levels.
摘要翻译：宽带可调低噪声放大器，能够在宽范围的频率范围内接收信号，提供可调滤波以去除带外干扰信号，并为广泛的频率提供可变增益。为了适应可变增益，低噪声放大器具有包括两个增益级的放大器级，响应于输入级的电压增益的变化来控制增益级之间的关系。可以采用与Q增强相结合的线性监测来提高低信号电平下的性能。

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