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公开(公告)号：US20130012150A1
公开(公告)日：2013-01-10
申请号：US13604542
申请日：2012-09-05
申请人： Vinod V. Panikkath , Li Liu
发明人： Vinod V. Panikkath , Li Liu
CPC分类号： H03K5/1565 , H03K3/017 , H03L7/08
摘要： A local oscillator (LO) module comprises a local oscillator and a feedback circuit. The local oscillator, biased at a supply voltage, generates a local oscillator signal having a duty cycle. The feedback circuit makes an absolute adjustment of the duty cycle of the local oscillator signal in response to a difference between a first voltage signal, representing a voltage level of the local oscillator signal, and a second voltage signal, representing a voltage level of a portion of the supply voltage corresponding to a desired duty cycle for the local oscillator signal.
摘要翻译： 本地振荡器（LO）模块包括本地振荡器和反馈电路。 以电源电压偏置的本地振荡器产生具有占空比的本地振荡器信号。 响应于表示本地振荡器信号的电压电平的第一电压信号和表示本地振荡器信号的电压电平的第二电压信号之间的差异，反馈电路对本地振荡器信号的占空比进行绝对调整， 的电源电压对应于本地振荡器信号的期望占空比。
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公开(公告)号：US08712357B2
公开(公告)日：2014-04-29
申请号：US12270764
申请日：2008-11-13
IPC分类号： H04B1/16
摘要： Techniques for generating local oscillator (LO) signals are described. In one design, an apparatus may include a deskew circuit and a divider circuit. The deskew circuit may receive a differential input oscillator signal having timing skew and provide a differential output oscillator signal having reduced timing skew. The differential input oscillator signal may include first and second input oscillator signals, and the differential output oscillator signal may include first and second output oscillator signals. In one design, the deskew circuit may include first and second variable delay circuits that receive the first and second input oscillator signals, respectively, and provide the first and second output oscillator signals, respectively. Each output oscillator signal may have an adjustable delay selected to reduce timing skew. The divider circuit may divide the differential output oscillator signal in frequency and provide differential I and Q divided signals, which may be used to generate LO signals.
摘要翻译： 描述用于产生本地振荡器（LO）信号的技术。 在一种设计中，设备可以包括去歪斜电路和分频器电路。 偏移电路可以接收具有定时偏移的差分输入振荡器信号，并提供具有减小的定时偏移的差分输出振荡器信号。 差分输入振荡器信号可以包括第一和第二输入振荡器信号，并且差分输出振荡器信号可以包括第一和第二输出振荡器信号。 在一种设计中，偏移电路可以包括分别接收第一和第二输入振荡器信号的第一和第二可变延迟电路，并分别提供第一和第二输出振荡器信号。 每个输出振荡器信号可以具有选择的可调延迟以减少定时偏移。 分频器电路可以分频差分输出振荡器信号，并提供差分I和Q分频信号，可用于产生LO信号。
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公开(公告)号：US20130226496A1
公开(公告)日：2013-08-29
申请号：US13407993
申请日：2012-02-29
CPC分类号： H04B17/0085 , G01R31/3191 , H04B17/11 , H04B17/13 , H04B17/21
摘要： A system for precise calibration of electronic components is disclosed. In an exemplary embodiment, an apparatus for calibrating a tunable component on an integrated circuit chip includes an on-chip reference component configured to generate a first on-chip reference level, an on-chip connector configured to couple to an external test unit component to generate a second on-chip reference level, and an on-chip memory configured to store at least one error adjustment parameter determined from a difference between the first on-chip reference level and the second on-chip reference level, and wherein the at least one error adjustment parameter is configured to calibrate the tunable component to a desired value.
摘要翻译： 公开了一种用于精确校准电子部件的系统。 在示例性实施例中，用于校准集成电路芯片上的可调谐部件的装置包括：片上参考部件，被配置为产生第一片上参考电平;片上连接器，被配置为耦合到外部测试单元部件， 产生第二片上参考电平，以及片上存储器，被配置为存储从第一片上参考电平和第二片上参考电平之间的差确定的至少一个误差调整参数，并且其中至少 一个错误调整参数被配置为将可调组件校准为期望值。
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公开(公告)号：US20120135698A1
公开(公告)日：2012-05-31
申请号：US12957247
申请日：2010-11-30
申请人： Hongyan Yan , Bhushan Shanti Asuri , Vinod V. Panikkath , Janakiram G. Sankaranarayanan , Himanshu Khatri
发明人： Hongyan Yan , Bhushan Shanti Asuri , Vinod V. Panikkath , Janakiram G. Sankaranarayanan , Himanshu Khatri
IPC分类号： H04W52/00
CPC分类号： H03H7/24
摘要： Disclosed are circuits, techniques and methods for implementing an attenuator in a signal transmission path. In one particular implementation, an attenuation may be adjusted based, at least in part, on a control signal. In another implementation, such an attenuation may be adjusted in coarse increments by varying one or more gate voltages applied one or more transistors. In yet another implementation, adjusting said attenuation in fine increments by varying a bias voltage applied to at least one level shifter.
摘要翻译： 公开了用于在信号传输路径中实现衰减器的电路，技术和方法。 在一个特定实现中，可以至少部分地基于控制信号来调整衰减。 在另一实现中，可以通过改变施加一个或多个晶体管的一个或多个栅极电压来以粗略增量来调整这种衰减。 在又一实施方案中，通过改变施加到至少一个电平移位器的偏置电压来以微小增量来调节所述衰减。
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公开(公告)号：US08903344B2
公开(公告)日：2014-12-02
申请号：US12957247
申请日：2010-11-30
申请人： Hongyan Yan , Bhushan Shanti Asuri , Vinod V Panikkath , Janakiram G Sankaranarayanan , Himanshu Khatri
发明人： Hongyan Yan , Bhushan Shanti Asuri , Vinod V Panikkath , Janakiram G Sankaranarayanan , Himanshu Khatri
CPC分类号： H03H7/24
摘要： Disclosed are circuits, techniques and methods for implementing an attenuator in a signal transmission path. In one particular implementation, an attenuation may be adjusted based, at least in part, on a control signal. In another implementation, such an attenuation may be adjusted in coarse increments by varying one or more gate voltages applied one or more transistors. In yet another implementation, adjusting said attenuation in fine increments by varying a bias voltage applied to at least one level shifter.
摘要翻译： 公开了用于在信号传输路径中实现衰减器的电路，技术和方法。 在一个特定实现中，可以至少部分地基于控制信号来调整衰减。 在另一实现中，可以通过改变施加一个或多个晶体管的一个或多个栅极电压来以粗略增量来调整这种衰减。 在又一实施方案中，通过改变施加到至少一个电平移位器的偏置电压来以微小增量来调节所述衰减。
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公开(公告)号：US08514008B2
公开(公告)日：2013-08-20
申请号：US12883940
申请日：2010-09-16
申请人： Hongyan Yan , Janakiram Ganesh Sankaranarayanan , Bhushan Shanti Asuri , Himanshu Khatri , Vinod V. Panikkath
发明人： Hongyan Yan , Janakiram Ganesh Sankaranarayanan , Bhushan Shanti Asuri , Himanshu Khatri , Vinod V. Panikkath
IPC分类号： H03K17/687
CPC分类号： H03K17/063 , H03K17/161 , H03K17/687 , H03K2017/066 , H03K2217/0018 , H03K2217/0054
摘要： In a first aspect, an RF switch includes a main transistor and a gate-to-source shorting circuit. When the RF switch is turned off, the gate-to-source shorting circuit is turned on to short the source and gate of the main transistor together, thereby preventing a Vgs from developing that would cause the main transistor to leak. When the RF switch is turned on, the gate-to-source shorting circuit is turned off to decouple the source from the gate. The gate is supplied with a digital logic high voltage to turn on the main transistor. In a second aspect, an RF switch includes a main transistor that has a bulk terminal. When the RF switch is turned off, the bulk is connected to ground through a high resistance. When the RF switch is turned on, the source and bulk are shorted together thereby reducing the threshold voltage of the main transistor.
摘要翻译： 在第一方面，RF开关包括主晶体管和栅极至源极短路电路。 当RF开关关闭时，栅极 - 源极短路电路导通，将主晶体管的源极和栅极连接在一起，从而防止Vgs发展，导致主晶体管泄漏。 当RF开关导通时，栅极至源极短路电路被关闭，以使源极与栅极分离。 门提供数字逻辑高电压来接通主晶体管。 在第二方面，RF开关包括具有大容量端子的主晶体管。 当RF开关关闭时，体积通过高电阻连接到地。 当RF开关导通时，源极和体积短路在一起，从而降低了主晶体管的阈值电压。
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7.发明授权公开(公告)号：US08493126B2
公开(公告)日：2013-07-23
申请号：US12836779
申请日：2010-07-15
申请人： Janakiram G. Sankaranarayanan , Bhushan S. Asuri , Vinod V. Panikkath , Hongyan Yan , Himanshu Khatri , Maulin Bhagat
发明人： Janakiram G. Sankaranarayanan , Bhushan S. Asuri , Vinod V. Panikkath , Hongyan Yan , Himanshu Khatri , Maulin Bhagat
IPC分类号： G06G7/12
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/165 , H03D2200/0023 , H03H7/1775 , H03H7/422 , H03H7/465
摘要： An RF transmitter capable of transmitting over a wide range of frequencies includes a mixer, a wideband high-Q balun, a first driver amplifier and a second driver amplifier. The balun has a single primary winding and two secondary windings. A differential output of the mixer is coupled to the primary winding. A first of the two secondary windings is coupled to drive the first driver amplifier. A second of the two secondary windings is coupled to drive the second driver amplifier. One driver amplifier is used when transmitting at lower frequencies whereas the other driver amplifier is used when transmitting at higher frequencies. By appropriate sizing of the inductances of the secondary windings and by switching out one of the secondary windings at certain times, the balun is tunable to operate over the wide frequency range while having a high quality factor Q, thereby facilitating reduced power consumption while simultaneously meeting performance requirements.
摘要翻译： 能够在宽频率范围内发射的RF发射机包括混频器，宽带高Q平衡 - 不平衡变换器，第一驱动器放大器和第二驱动器放大器。 平衡 - 不平衡转换器具有单个初级绕组和两个次级绕组。 混频器的差分输出耦合到初级绕组。 两个次级绕组中的第一个被耦合以驱动第一驱动放大器。 两个次级绕组中的第二个被耦合以驱动第二个驱动放大器。 当以较低频率发射时使用一个驱动放大器，而在较高频率下传输时使用另一个驱动放大器。 通过适当地确定次级绕组的电感和通过在某些时间切换出一个次级绕组，平衡 - 不平衡变换器可以在宽频率范围内工作，同时具有高品质因数Q，从而有助于降低功耗，同时满足 性能要求。
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公开(公告)号：US20100120390A1
公开(公告)日：2010-05-13
申请号：US12270764
申请日：2008-11-13
IPC分类号： H04B1/16
摘要： Techniques for generating local oscillator (LO) signals are described. In one design, an apparatus may include a deskew circuit and a divider circuit. The deskew circuit may receive a differential input oscillator signal having timing skew and provide a differential output oscillator signal having reduced timing skew. The differential input oscillator signal may include first and second input oscillator signals, and the differential output oscillator signal may include first and second output oscillator signals. In one design, the deskew circuit may include first and second variable delay circuits that receive the first and second input oscillator signals, respectively, and provide the first and second output oscillator signals, respectively. Each output oscillator signal may have an adjustable delay selected to reduce timing skew. The divider circuit may divide the differential output oscillator signal in frequency and provide differential I and Q divided signals, which may be used to generate LO signals.
摘要翻译： 描述用于产生本地振荡器（LO）信号的技术。 在一种设计中，设备可以包括去歪斜电路和分频器电路。 偏移电路可以接收具有定时偏移的差分输入振荡器信号，并提供具有减小的定时偏移的差分输出振荡器信号。 差分输入振荡器信号可以包括第一和第二输入振荡器信号，并且差分输出振荡器信号可以包括第一和第二输出振荡器信号。 在一种设计中，歪斜电路可以包括分别接收第一和第二输入振荡器信号的第一和第二可变延迟电路，并分别提供第一和第二输出振荡器信号。 每个输出振荡器信号可以具有选择的可调延迟以减少定时偏移。 分频器电路可以分频差分输出振荡器信号，并提供差分I和Q分频信号，可用于产生LO信号。
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公开(公告)号：US08755456B2
公开(公告)日：2014-06-17
申请号：US13415572
申请日：2012-03-08
CPC分类号： H04L27/368 , H04L27/365
摘要： A wireless device for waveform scaling is disclosed. The wireless device includes a modulator that increases a magnitude of a peak digital code beyond a maximum available digital code for transmit power levels below a transmit power threshold to produce an adjusted digital code. The magnitude of the peak digital code is not increased beyond the maximum available digital code for transmit power levels above the transmit power threshold. The wireless device also includes a digital-to-analog converter that converts the adjusted digital code into an analog signal.
摘要翻译： 公开了一种用于波形缩放的无线设备。 该无线设备包括调制器，该调制器将峰值数字码的大小增加到超过发射功率阈值的发射功率电平的最大可用数字码以产生经调整的数字码。 高于发射功率阈值的发射功率电平，峰值数字码的幅度不会超过最大可用数字码。 无线设备还包括将经调整的数字代码转换为模拟信号的数模转换器。
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公开(公告)号：US08718574B2
公开(公告)日：2014-05-06
申请号：US12277882
申请日：2008-11-25
申请人： Vinod V. Panikkath , Li Liu
发明人： Vinod V. Panikkath , Li Liu
IPC分类号： H04B1/40
CPC分类号： H03K5/1565 , H03K3/017 , H03L7/08
摘要： A local oscillator (LO) module comprises a local oscillator and a feedback circuit. The local oscillator, biased at a supply voltage, generates a local oscillator signal having a duty cycle. The feedback circuit makes an absolute adjustment of the duty cycle of the local oscillator signal in response to a difference between a first voltage signal, representing a voltage level of the local oscillator signal, and a second voltage signal, representing a voltage level of a portion of the supply voltage corresponding to a desired duty cycle for the local oscillator signal.
摘要翻译： 本地振荡器（LO）模块包括本地振荡器和反馈电路。 以电源电压偏置的本地振荡器产生具有占空比的本地振荡器信号。 响应于表示本地振荡器信号的电压电平的第一电压信号和表示本地振荡器信号的电压电平的第二电压信号之间的差异，反馈电路对本地振荡器信号的占空比进行绝对调整， 的电源电压对应于本地振荡器信号的期望占空比。
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