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1. 发明授权

US08098111B2 Reduced phase noise multi-band VCO 有权
标题翻译：降低相位噪声多频带VCO
公开(公告)号：US08098111B2
公开(公告)日：2012-01-17
申请号：US12693993
申请日：2010-01-26
申请人： Calvin (Shr-Lung) Chen , Morteza Vadipour , Xinyu Chen
发明人： Calvin (Shr-Lung) Chen , Morteza Vadipour , Xinyu Chen
IPC分类号： H03L7/099
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1243
摘要： Embodiments of a multi-band voltage controlled oscillator (VCO) are provided herein. The multi-band VCO is configured to adjust a frequency of an output signal based on an input signal. The multi-band VCO includes a tank module, an active module, and a control module. The tank module includes a parallel combination of a capacitor and an inductor. The active module includes a pair of cross-coupled transistors that are configured to provide a negative conductance that cancels out a positive conductance associated with the tank module. To improve the phase noise associated with the multi-band VCO, the control module is configured to adjust the body voltage of the cross-coupled transistors.
摘要翻译：本文提供了多频带压控振荡器（VCO）的实施例。多频带VCO被配置为基于输入信号调整输出信号的频率。多频带VCO包括一个储能模块，一个有源模块和一个控制模块。油箱模块包括电容器和电感器的并联组合。有源模块包括一对交叉耦合晶体管，其被配置为提供抵消与该模块相关联的正电导的负电导。为了改善与多频带VCO相关联的相位噪声，控制模块被配置为调节交叉耦合晶体管的体电压。

2. 发明申请

US20110090024A1 Switched Capacitor Array Having Reduced Parasitics 有权
标题翻译：具有减少寄生的开关电容阵列
公开(公告)号：US20110090024A1
公开(公告)日：2011-04-21
申请号：US12580916
申请日：2009-10-16
申请人： Calvin (Shr-Lung) CHEN , Ethan CHANG
发明人： Calvin (Shr-Lung) CHEN , Ethan CHANG
IPC分类号： H03H7/12 , H01G4/30
CPC分类号： H01G4/38 , Y10T29/43
摘要： A switched capacitor includes a capacitor and a switch. The capacitor is coupled between a p-node and an n-node and includes interleaved p-fingers and n-fingers. A number of the p-fingers is greater than a number of the n-fingers. The switch is coupled between the n-node and ground.
摘要翻译：开关电容器包括电容器和开关。电容器耦合在p节点和n节点之间，并且包括交错的p指和n指。多个手指的数量大于n个手指的数量。开关耦合在n节点和地之间。

3. 发明申请

US20110090017A1 Reduced Phase Noise Multi-Band VCO 有权
标题翻译：减少相位噪声多频带VCO
公开(公告)号：US20110090017A1
公开(公告)日：2011-04-21
申请号：US12693993
申请日：2010-01-26
申请人： Calvin (Shr-Lung) CHEN , Morteza Vadipour , Xinyu Chen
发明人： Calvin (Shr-Lung) CHEN , Morteza Vadipour , Xinyu Chen
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1243
摘要： Embodiments of a multi-band voltage controlled oscillator (VCO) are provided herein. The multi-band VCO is configured to adjust a frequency of an output signal based on an input signal. The multi-band VCO includes a tank module, an active module, and a control module. The tank module includes a parallel combination of a capacitor and an inductor. The active module includes a pair of cross-coupled transistors that are configured to provide a negative conductance that cancels out a positive conductance associated with the tank module. To improve the phase noise associated with the multi-band VCO, the control module is configured to adjust the body voltage of the cross-coupled transistors.
摘要翻译：本文提供了多频带压控振荡器（VCO）的实施例。多频带VCO被配置为基于输入信号调整输出信号的频率。多频带VCO包括一个储能模块，一个有源模块和一个控制模块。油箱模块包括电容器和电感器的并联组合。有源模块包括一对交叉耦合晶体管，其被配置为提供抵消与该模块相关联的正电导的负电导。为了改善与多频带VCO相关联的相位噪声，控制模块被配置为调节交叉耦合晶体管的体电压。

4. 发明授权

US08358991B2 Transconductance enhanced RF front-end 有权
标题翻译：跨导增强射频前端
公开(公告)号：US08358991B2
公开(公告)日：2013-01-22
申请号：US12693981
申请日：2010-01-26
申请人： Xinyu Chen , Calvin (Shr-Lung) Chen , John Leete
发明人： Xinyu Chen , Calvin (Shr-Lung) Chen , John Leete
IPC分类号： H04B1/06
CPC分类号： H04B1/28
摘要： Embodiments of an RF receiver front-end are presented herein. In an embodiment, the RF receiver front-end comprises a transconductance LNA, a passive mixer, and a gm-enhanced common-gate buffer. The transconductance LNA is configured to convert an RF voltage signal to an RF current signal and provide the RF current signal at an output. The passive mixer is coupled to the output of the transconductance LNA and is configured to mix the RF current signal with a local oscillator signal to produce a frequency translated current signal. The gm-enhanced common-gate buffer is configured to receive the frequency translated current signal at an input and convert the frequency translated current signal to a frequency translated voltage signal. In an embodiment, the input of the gm-enhanced common-gate buffer is configured to provide a low input impedance to limit a voltage swing of the frequency translated current signal.
摘要翻译： RF接收器前端的实施例在本文中给出。在一个实施例中，RF接收机前端包括跨导LNA，无源混频器以及增强型通用门控缓冲器。跨导LNA被配置为将RF电压信号转换为RF电流信号，并在输出端提供RF电流信号。无源混频器耦合到跨导LNA的输出，并且被配置为将RF电流信号与本地振荡器信号混频以产生频率转换的电流信号。 gm增强型共栅缓冲器被配置为在输入处接收频率转换的电流信号，并将频率转换的电流信号转换成频率转换的电压信号。在一个实施例中，gm增强型共栅缓冲器的输入被配置为提供低输入阻抗以限制频率转换的电流信号的电压摆幅。

5. 发明授权

US08421556B2 Switched capacitor array having reduced parasitics 有权
标题翻译：具有减少的寄生效应的开关电容器阵列
公开(公告)号：US08421556B2
公开(公告)日：2013-04-16
申请号：US12580916
申请日：2009-10-16
申请人： Calvin (Shr-Lung) Chen , Ethan Chang
发明人： Calvin (Shr-Lung) Chen , Ethan Chang
IPC分类号： H03H7/00 , H01G4/00
CPC分类号： H01G4/38 , Y10T29/43
摘要： A switched capacitor includes a capacitor and a switch. The capacitor is coupled between a p-node and an n-node and includes interleaved p-fingers and n-fingers. A number of the p-fingers is greater than a number of the n-fingers. The switch is coupled between the n-node and ground.
摘要翻译：开关电容器包括电容器和开关。电容器耦合在p节点和n节点之间，并且包括交错的p指和n指。多个手指的数量大于n个手指的数量。开关耦合在n节点和地之间。

6. 发明申请

US20110092180A1 Transconductance Enhanced RF Front-End 有权
标题翻译：跨导增强RF前端
公开(公告)号：US20110092180A1
公开(公告)日：2011-04-21
申请号：US12693981
申请日：2010-01-26
申请人： Xinyu CHEN , Calvin (Shr-Lung) Chen , John Leete
发明人： Xinyu CHEN , Calvin (Shr-Lung) Chen , John Leete
IPC分类号： H04B1/16
CPC分类号： H04B1/28
摘要： Embodiments of an RF receiver front-end are presented herein. In an embodiment, the RF receiver front-end comprises a transconductance LNA, a passive mixer, and a gm-enhanced common-gate buffer. The transconductance LNA is configured to convert an RF voltage signal to an RF current signal and provide the RF current signal at an output. The passive mixer is coupled to the output of the transconductance LNA and is configured to mix the RF current signal with a local oscillator signal to produce a frequency translated current signal. The gm-enhanced common-gate buffer is configured to receive the frequency translated current signal at an input and convert the frequency translated current signal to a frequency translated voltage signal. In an embodiment, the input of the gm-enhanced common-gate buffer is configured to provide a low input impedance to limit a voltage swing of the frequency translated current signal.
摘要翻译： RF接收器前端的实施例在本文中给出。在一个实施例中，RF接收机前端包括跨导LNA，无源混频器以及增强型通用门控缓冲器。跨导LNA被配置为将RF电压信号转换为RF电流信号，并在输出端提供RF电流信号。无源混频器耦合到跨导LNA的输出，并且被配置为将RF电流信号与本地振荡器信号混频以产生频率转换的电流信号。 gm增强型共栅缓冲器被配置为在输入处接收频率转换的电流信号，并将频率转换的电流信号转换成频率转换的电压信号。在一个实施例中，gm增强型共栅缓冲器的输入被配置为提供低输入阻抗以限制频率转换的电流信号的电压摆幅。

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