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1. 发明申请

WO2012092385A1 WIDEBAND MULTI-MODE VCO 审中-公开
标题翻译：宽带多模VCO
公开(公告)号：WO2012092385A1
公开(公告)日：2012-07-05
申请号：PCT/US2011/067620
申请日：2011-12-28
申请人： QUALCOMM INCORPORATED , LI, Guansheng , LIU, Li , TANG, Yiwu
发明人： LI, Guansheng , LIU, Li , TANG, Yiwu
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/1225 , H03B5/1256 , H03B5/1262 , H03B5/1281 , H03B5/1296
摘要： A VCO includes a transformer-based resonator that has a first LC tank and a second LC tank. The resonator has an even resonant mode and an odd resonant mode. The VCO further includes an active transconductance network that is coupled to a two-terminal port of the first tank and is also coupled to a two-terminal port of the second tank. A first terminal of the port of the first tank is capacitively coupled to a first terminal of the port of the second tank. A second terminal of the port of the first tank is capacitively coupled to a second terminal of the port of the second tank. The active transconductance network causes the resonator to resonate in a selectable one of the even and odd resonant modes depending on a digital control signal. The VCO is fine tuned by changing the capacitances of capacitors of the tanks.
摘要翻译： VCO包括具有第一LC箱和第二LC箱的基于变压器的谐振器。谐振器具有均匀谐振模式和奇数谐振模式。 VCO还包括有源跨导网络，其耦合到第一箱的两端口并且还耦合到第二箱的两端口。第一罐的端口的第一端子电容耦合到第二罐的端口的第一端子。第一罐的端口的第二端子电容耦合到第二罐的端口的第二端子。有源跨导网络使得谐振器根据数字控制信号以奇数谐振模式和奇数谐振模式中的可选择谐振模式谐振。通过改变电容器的电容，可以对VCO进行微调。

2. 发明申请

WO2012054826A1 AN OSCILLATOR CIRCUIT AND SYSTEM 审中-公开
标题翻译：振荡器电路和系统
公开(公告)号：WO2012054826A1
公开(公告)日：2012-04-26
申请号：PCT/US2011/057276
申请日：2011-10-21
申请人： CORNELL UNIVERSITY , AFSHARI, Ehsan , LI, Guansheng
发明人： AFSHARI, Ehsan , LI, Guansheng
IPC分类号： H03B5/08 , H04B1/40
CPC分类号： H03B5/1265 , H03B5/1212 , H03B5/1225 , H03B5/1228 , H03B2200/0048 , H03B2200/005 , H03B2201/0266
摘要： The present invention is directed to a distributed dual-band oscillator suitable for low-phase-noise applications. The invention is configured to switch between the odd and even resonant modes of a fourth-order resonator. The switches used for mode selection do not conduct current and therefore do not affect the quality factor (Q) of the resonator. The benefit of this feature is relatively low phase noise.
摘要翻译：本发明涉及适用于低相位噪声应用的分布式双频振荡器。本发明被配置为在四阶谐振器的奇偶谐振模式之间切换。用于模式选择的开关不会导通电流，因此不影响谐振器的品质因数（Q）。该功能的优点是相位相对较低。

3. 发明公开

EP2659584A1 WIDEBAND MULTI-MODE VCO 有权
标题翻译：多模式宽带VCO
公开(公告)号：EP2659584A1
公开(公告)日：2013-11-06
申请号：EP11815885.6
申请日：2011-12-28
申请人： Qualcomm Incorporated
发明人： LI, Guansheng , LIU, Li , TANG, Yiwu
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/1225 , H03B5/1256 , H03B5/1262 , H03B5/1281 , H03B5/1296
摘要： A VCO includes a transformer-based resonator that has a first LC tank and a second LC tank. The resonator has an even resonant mode and an odd resonant mode. The VCO further includes an active transconductance network that is coupled to a two-terminal port of the first tank and is also coupled to a two-terminal port of the second tank. A first terminal of the port of the first tank is capacitively coupled to a first terminal of the port of the second tank. A second terminal of the port of the first tank is capacitively coupled to a second terminal of the port of the second tank. The active transconductance network causes the resonator to resonate in a selectable one of the even and odd resonant modes depending on a digital control signal. The VCO is fine tuned by changing the capacitances of capacitors of the tanks.

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