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公开(公告)号：US08022780B2
公开(公告)日：2011-09-20
申请号：US12107592
申请日：2008-04-22
IPC分类号： H03L1/02
摘要： Techniques for compensating for the effects of temperature change on voltage controlled oscillator (VCO) frequency are disclosed. In an embodiment, an auxiliary varactor is coupled to an LC tank of the VCO. The auxiliary varactor has a capacitance controlled by a temperature-dependant control voltage to minimize the overall change in VCO frequency with temperature. Techniques for generating the control voltage using digital and analog means are further disclosed.
摘要翻译： 公开了用于补偿温度变化对压控振荡器（VCO）频率的影响的技术。 在一个实施例中，辅助变容二极管耦合到VCO的LC箱。 辅助变容二极管具有由温度依赖控制电压控制的电容，以最小化VCO频率随温度的总体变化。 进一步公开了使用数字和模拟装置产生控制电压的技术。
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公开(公告)号：US20090261917A1
公开(公告)日：2009-10-22
申请号：US12107592
申请日：2008-04-22
IPC分类号： H03L1/02
摘要： Techniques for compensating for the effects of temperature change on voltage controlled oscillator (VCO) frequency are disclosed. In an embodiment, an auxiliary varactor is coupled to an LC tank of the VCO. The auxiliary varactor has a capacitance controlled by a temperature-dependant control voltage to minimize the overall change in VCO frequency with temperature. Techniques for generating the control voltage using digital and analog means are further disclosed.
摘要翻译： 公开了用于补偿温度变化对压控振荡器（VCO）频率的影响的技术。 在一个实施例中，辅助变容二极管耦合到VCO的LC箱。 辅助变容二极管具有由温度依赖控制电压控制的电容，以最小化VCO频率随温度的总体变化。 进一步公开了使用数字和模拟装置产生控制电压的技术。
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公开(公告)号：US20090278620A1
公开(公告)日：2009-11-12
申请号：US12116527
申请日：2008-05-07
IPC分类号： H03L7/099
摘要： Techniques are disclosed for trimming a capacitance associated with a capacitor bank for use in a voltage-controlled oscillator (VCO). In an embodiment, each capacitance is sub-divided into a plurality of constituent capacitances. The constituent capacitances may be selectively enabled or disabled to trim the step sizes of the capacitor bank. Further techniques are disclosed for calibrating the trimmable capacitance to minimize step size error for the capacitor bank.
摘要翻译： 公开了用于修整与用于压控振荡器（VCO）的电容器组相关的电容的技术。 在一个实施例中，每个电容被细分成多个组成电容。 可以选择性地使能或禁用构成电容来修整电容器组的步长。 公开了用于校准可调整电容以最小化电容器组的步长误差的其它技术。
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公开(公告)号：US07855610B2
公开(公告)日：2010-12-21
申请号：US12116527
申请日：2008-05-07
IPC分类号： H03B5/08
摘要： Techniques are disclosed for trimming a capacitance associated with a capacitor bank for use in a voltage-controlled oscillator (VCO). In an embodiment, each capacitance is sub-divided into a plurality of constituent capacitances. The constituent capacitances may be selectively enabled or disabled to trim the step sizes of the capacitor bank. Further techniques are disclosed for calibrating the trimmable capacitance to minimize step size error for the capacitor bank.
摘要翻译： 公开了用于修整与用于压控振荡器（VCO）的电容器组相关的电容的技术。 在一个实施例中，每个电容被细分成多个组成电容。 可以选择性地使能或禁用构成电容来修整电容器组的步长。 公开了用于校准可调整电容以最小化电容器组的步长误差的其它技术。
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公开(公告)号：US20120262239A1
公开(公告)日：2012-10-18
申请号：US13086325
申请日：2011-04-13
IPC分类号： H03L7/00
CPC分类号： H03L7/18 , H03B19/14 , H03B2200/0078 , H03J2200/10
摘要： A tunable Injection-Locked Oscillator (ILO) having a wide locking range is used in a Local Oscillator (LO) of a wideband wireless transceiver to generate differential signals. The ILO includes a resonator with an adjustable natural oscillating frequency. In one example, the ILO is part of a quadrature divider that can lock onto a Phase-Locked Loop (PLL) output signal in a wide frequency band while achieving lower power consumption and lower phase noise than a differential latch type divider. The ILO is tuned by disabling a Voltage-Controlled Oscillator (VCO) from driving the ILO, adjusting the natural oscillating frequency, making a measurement indicative of the natural oscillating frequency, and determining whether the measurement is within a predetermined range. If the measurement is below the predetermined range, capacitances of resonators within the ILO are decreased, whereas if the measurement is above the predetermined range, capacitances of the resonators are increased.
摘要翻译： 在宽带无线收发器的本地振荡器（LO）中使用具有宽锁定范围的可调注入锁定振荡器（ILO）以产生差分信号。 国际劳工组织包括具有可调节的自然振荡频率的谐振器。 在一个示例中，国际劳工组织是正交分频器的一部分，其可以在宽频带内锁定锁相环（PLL）输出信号，同时实现比差分锁存器类型分频器更低的功耗和更低的相位噪声。 国际劳工组织通过禁用驱动国际劳工组织的电压控制振荡器（VCO）进行调整，调整自然振荡频率，进行表示自然振荡频率的测量，以及确定测量是否在预定范围内。 如果测量低于预定范围，则国际劳工组织内的谐振器的电容减小，而如果测量高于预定范围，则谐振器的电容增加。
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公开(公告)号：US08704603B2
公开(公告)日：2014-04-22
申请号：US13086325
申请日：2011-04-13
CPC分类号： H03L7/18 , H03B19/14 , H03B2200/0078 , H03J2200/10
摘要： A tunable Injection-Locked Oscillator (ILO) having a wide locking range is used in a Local Oscillator (LO) of a wideband wireless transceiver to generate differential signals. The ILO includes a resonator with an adjustable natural oscillating frequency. In one example, the ILO is part of a quadrature divider that can lock onto a Phase-Locked Loop (PLL) output signal in a wide frequency band while achieving lower power consumption and lower phase noise than a differential latch type divider. The ILO is tuned by disabling a Voltage-Controlled Oscillator (VCO) from driving the ILO, adjusting the natural oscillating frequency, making a measurement indicative of the natural oscillating frequency, and determining whether the measurement is within a predetermined range. If the measurement is below the predetermined range, capacitances of resonators within the ILO are decreased, whereas if the measurement is above the predetermined range, capacitances of the resonators are increased.
摘要翻译： 在宽带无线收发器的本地振荡器（LO）中使用具有宽锁定范围的可调注入锁定振荡器（ILO）以产生差分信号。 国际劳工组织包括具有可调节的自然振荡频率的谐振器。 在一个示例中，国际劳工组织是正交分频器的一部分，其可以在宽频带内锁定锁相环（PLL）输出信号，同时实现比差分锁存器类型分频器更低的功耗和更低的相位噪声。 国际劳工组织通过禁用驱动国际劳工组织的电压控制振荡器（VCO）进行调整，调整自然振荡频率，进行表示自然振荡频率的测量，以及确定测量是否在预定范围内。 如果测量低于预定范围，则国际劳工组织内的谐振器的电容减小，而如果测量高于预定范围，则谐振器的电容增加。
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公开(公告)号：US20110291716A1
公开(公告)日：2011-12-01
申请号：US13208456
申请日：2011-08-12
申请人： Shen Wang , Sang-Oh Lee , Jeongsik Yang
发明人： Shen Wang , Sang-Oh Lee , Jeongsik Yang
IPC分类号： H03L7/08
CPC分类号： H03L7/0896 , H03L7/18
摘要： In one embodiment of the invention, a method for a charge pump is disclosed. The method includes biasing a plurality of transistors; switching a pair of main transistor switches to apply or remove a net charge on an output terminal though the biased transistors; and turning on auxiliary transistor switches when the main transistor switches are turned off. The auxiliary transistor switches when turned on provide an auxiliary equalizing path to nodes between the main transistor switches and the biased transistors. The auxiliary equalizing path equalizes voltages between the intermediate nodes to rapidly turn off the biased transistors and reduce noise on the output terminal of the charge pump.
摘要翻译： 在本发明的一个实施例中，公开了一种用于电荷泵的方法。 该方法包括偏置多个晶体管; 切换一对主晶体管开关以通过偏置晶体管施加或去除输出端子上的净电荷; 并且当主晶体管开关断开时，接通辅助晶体管开关。 辅助晶体管开关导通时，为主晶体管开关和偏置晶体管之间的节点提供辅助均衡通路。 辅助均衡路径均衡中间节点之间的电压，以快速关闭偏置晶体管，并降低电荷泵输出端子上的噪声。
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公开(公告)号：US20120187994A1
公开(公告)日：2012-07-26
申请号：US13011716
申请日：2011-01-21
申请人： Jeongsik Yang , Chan Hong Park , Sang-oh Lee
发明人： Jeongsik Yang , Chan Hong Park , Sang-oh Lee
IPC分类号： H03K5/00
CPC分类号： H04L27/3863 , H03D7/1441 , H03D7/1458 , H03D7/165 , H03L7/0812 , H04L27/368
摘要： System for I-Q phase mismatch detection and correction. An apparatus to correct a phase mismatch between I and Q signals includes a correction circuit configured to continuously compare a reference signal and a phase error signal associated with the I and Q signals to generate an I bias signal and a Q bias signal, a first CMOS buffer configured to receive the I signal and the I bias signal and output a phase adjusted I signal based on the I bias signal, and a second CMOS buffer configured to receive the Q signal and the Q bias signal and output a phase adjusted Q signal based on the Q bias signal.
摘要翻译： 用于I-Q相位失配检测和校正的系统。 用于校正I和Q信号之间的相位失配的装置包括校正电路，被配置为连续地比较参考信号和与I和Q信号相关联的相位误差信号，以产生I偏置信号和Q偏置信号，第一CMOS 缓冲器，被配置为接收I信号和I偏置信号，并且基于I偏置信号输出相位调整的I信号;以及第二CMOS缓冲器，被配置为接收Q信号和Q偏置信号，并输出基于相位的Q信号 对Q偏置信号。
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9.发明授权Systems and methods for self testing a voltage controlled oscillator in an open loop configuration 有权用于在开环配置中自我测试压控振荡器的系统和方法公开(公告)号：US08143958B2
公开(公告)日：2012-03-27
申请号：US12469548
申请日：2009-05-20
申请人： Jeongsik Yang , Jin Wook Kim , Hong Sun Kim , Sang-Oh Lee
发明人： Jeongsik Yang , Jin Wook Kim , Hong Sun Kim , Sang-Oh Lee
CPC分类号： G01R31/2824
摘要： Methods and apparatus for self testing a multiband voltage controlled oscillator (VCO) are disclosed. A tuning voltage of the VCO is adjusted where the output of the VCO does not affect the input to the VCO. Frequency bands in the VCO are selected. Output frequencies of the VCO are measured.
摘要翻译： 公开了用于自测试多频带压控振荡器（VCO）的方法和装置。 调整VCO的调谐电压，其中VCO的输出不影响到VCO的输入。 选择VCO中的频带。 测量VCO的输出频率。
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公开(公告)号：US20090121759A1
公开(公告)日：2009-05-14
申请号：US11953575
申请日：2007-12-10
申请人： Shen Wang , Sang-Oh Lee , Jeongsik Yang
发明人： Shen Wang , Sang-Oh Lee , Jeongsik Yang
CPC分类号： H03L7/0896 , H03L7/18
摘要： In one embodiment of the invention, a method for a charge pump is disclosed. The method includes biasing a plurality of transistors; switching a pair of main transistor switches to apply or remove a net charge on an output terminal though the biased transistors; and turning on auxiliary transistor switches when the main transistor switches are turned off. The auxiliary transistor switches when turned on provide an auxiliary equalizing path to nodes between the main transistor switches and the biased transistors. The auxiliary equalizing path equalizes voltages between the intermediate nodes to rapidly turn off the biased transistors and reduce noise on the output terminal of the charge pump.
摘要翻译： 在本发明的一个实施例中，公开了一种用于电荷泵的方法。 该方法包括偏置多个晶体管; 切换一对主晶体管开关以通过偏置晶体管施加或去除输出端子上的净电荷; 并且当主晶体管开关断开时，接通辅助晶体管开关。 辅助晶体管开关导通时，为主晶体管开关和偏置晶体管之间的节点提供辅助均衡通路。 辅助均衡路径均衡中间节点之间的电压，以快速关闭偏置晶体管，并降低电荷泵输出端子上的噪声。
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