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公开(公告)号：US20150372665A1
公开(公告)日：2015-12-24
申请号：US14547868
申请日：2014-11-19
发明人： Massoud Tohidian , Robert Bogdan Staszewski , Ali Fotowat Ahmady , Seyed Amir Reza Ahmadi Mehr , Mahmoud Kamarei , Fabien Ndagijimana
CPC分类号： H03K5/133 , H03B5/1212 , H03B5/1228 , H03B5/124 , H03B27/00 , H03B2200/0074 , H03B2201/0208 , H03K3/011 , H03K3/0315 , H03K3/0322 , H03L3/00
摘要： A quadrature LC tank based digitally controlled ring oscillator (DCO). The oscillator structure incorporates a plurality of stages, each stage including a buffer and a series LC tank. Four stages are coupled together to create a 360 degree phase shift around a loop. The oscillation frequency of the oscillator is the same as the resonant frequency of each LC tank, therefore it avoids quality factor degradation of LC tanks found in the prior art. In one example embodiment, class-D amplifiers are used to drive each of the LC tanks Capacitor banks before at the input and output of the buffers provide coarse and fine tuning of the frequency of oscillation. The high efficiency exhibited by these amplifiers results in very good phase noise performance of this oscillator. The oscillator utilizes a startup circuit to launch oscillation upon power on.
摘要翻译： 一个基于LC槽的数字控制环形振荡器（DCO）。 振荡器结构包括多个级，每级包括缓冲器和串联LC槽。 四个阶段耦合在一起，以围绕一个循环创建一个360度的相移。 振荡器的振荡频率与每个液晶盒的谐振频率相同，因此避免了现有技术中发现的LC液晶盒的品质因素降低。 在一个示例性实施例中，D类放大器用于在缓冲器的输入和输出提供振荡频率的粗调和微调之前驱动每个LC槽电容器组。 这些放大器表现出的高效率使得该振荡器具有非常好的相位噪声性能。 振荡器利用启动电路在上电时发出振荡。
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2.发明授权High-IF superheterodyne receiver incorporating high-Q complex band pass filter 有权包含高Q复带通滤波器的高IF超外差接收机公开(公告)号：US09014653B2
公开(公告)日：2015-04-21
申请号：US14027849
申请日：2013-09-16
CPC分类号： H03L7/00 , H03B1/00 , H03B5/1215 , H03B5/1228 , H03B5/124 , H03B5/1296 , H03B7/06 , H03L7/099 , H04B1/10 , H04B1/26
摘要： A novel and useful reconfigurable superheterodyne receiver that employs a 3rd order complex IQ charge-sharing band-pass filter (BPF) for image rejection and 1st order feedback based RF BPF for channel selection filtering. The operating RF input frequency of the receiver is 500 MHz to 1.2 GHz with a varying high IF range of 33 to 80 MHz. The gain stages are inverter based gm stages and the total gain of the receiver is 35 dB and in-band IIP3 at mid gain is +10 dBm. The NF of the receiver is 6.7 dB which is acceptable for the receiver without an LNA. The architecture is highly reconfigurable and follows the technology scaling.
摘要翻译： 一种新颖有用的可重新配置的超外差接收机，其采用用于图像抑制的3阶复合IQ电荷共享带通滤波器（BPF）和用于信道选择滤波的基于1阶反馈的RF BPF。 接收机的工作RF输入频率为500 MHz至1.2 GHz，具有33至80 MHz变化的高中频范围。 增益级是基于逆变器的gm级，接收机的总增益为35 dB，中间增益的带内IIP3为+10 dBm。 接收机的NF为6.7 dB，对于没有LNA的接收机，这是可以接受的。 该架构是高度可重构的，并遵循技术缩放。
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公开(公告)号：US09641164B2
公开(公告)日：2017-05-02
申请号：US14547868
申请日：2014-11-19
发明人： Massoud Tohidian , Robert Bogdan Staszewski , Ali Fotowat Ahmady , Seyed Amir Reza Ahmadi Mehr , Mahmoud Kamarei , Fabien Ndagijimana
CPC分类号： H03K5/133 , H03B5/1212 , H03B5/1228 , H03B5/124 , H03B27/00 , H03B2200/0074 , H03B2201/0208 , H03K3/011 , H03K3/0315 , H03K3/0322 , H03L3/00
摘要： A quadrature LC tank based digitally controlled ring oscillator (DCO). The oscillator structure incorporates a plurality of stages, each stage including a buffer and a series LC tank. Four stages are coupled together to create a 360 degree phase shift around a loop. The oscillation frequency of the oscillator is the same as the resonant frequency of each LC tank, therefore it avoids quality factor degradation of LC tanks found in the prior art. In one example embodiment, class-D amplifiers are used to drive each of the LC tanks. Capacitor banks before at the input and output of the buffers provide coarse and fine tuning of the frequency of oscillation. The high efficiency exhibited by these amplifiers results in very good phase noise performance of this oscillator. The oscillator utilizes a startup circuit to launch oscillation upon power on.
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公开(公告)号：US20170104455A1
公开(公告)日：2017-04-13
申请号：US15386637
申请日：2016-12-21
发明人： Massoud Tohidian , Robert Bogdan Staszewski , Ali Fotowat Ahmady , Seyed Amir Reza Ahmadi Mehr , Mahmoud Kamarei , Fabien Ndagijimana
CPC分类号： H03K5/133 , H03B5/1212 , H03B5/1228 , H03B5/124 , H03B27/00 , H03B2200/0074 , H03B2201/0208 , H03K3/011 , H03K3/0315 , H03K3/0322 , H03L3/00
摘要： A quadrature LC tank based digitally controlled ring oscillator (DCO). The oscillator structure incorporates a plurality of stages, each stage including a buffer and a series LC tank. Four stages are coupled together to create a 360 degree phase shift around a loop. The oscillation frequency of the oscillator is the same as the resonant frequency of each LC tank, therefore it avoids quality factor degradation of LC tanks found in the prior art. In one example embodiment, class-D amplifiers are used to drive each of the LC tanks. Capacitor banks before at the input and output of the buffers provide coarse and fine tuning of the frequency of oscillation. The high efficiency exhibited by these amplifiers results in very good phase noise performance of this oscillator. The oscillator utilizes a startup circuit to launch oscillation upon power on.
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5.发明授权公开(公告)号：US09444433B2
公开(公告)日：2016-09-13
申请号：US14247534
申请日：2014-04-08
摘要： A novel and useful wideband FM demodulator operating across an 8 GHz IF bandwidth for application in low-power, wideband heterodyne receivers. The demodulator includes an n-stage ring oscillator that is injection locked to a wideband input signal. Locking to the input frequency, it divides the FM deviation by n, thereby facilitating as well as reducing the energy required for wideband demodulation. The quadrature-phased output of the ring oscillator is phase correlated using a low-power folded CMOS mixer capable of detecting FM up to 400 Mb/s over a 2-10 GHz IF frequency range.
摘要翻译： 一种新颖有用的宽带FM解调器，可在8 GHz的IF带宽上工作，适用于低功率宽带外差接收机。 解调器包括n级环形振荡器，其被注入锁定到宽带输入信号。 锁定到输入频率，它将FM偏差除以n，从而有助于减少宽带解调所需的能量。 环形振荡器的正交相输出使用能够在2-10 GHz IF频率范围内检测高达400 Mb / s的FM功率的低功耗折叠CMOS混频器进行相位相关。
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公开(公告)号：US09197221B2
公开(公告)日：2015-11-24
申请号：US14027635
申请日：2013-09-16
CPC分类号： H03L7/00 , H03B1/00 , H03B5/1215 , H03B5/1228 , H03B5/124 , H03B5/1296 , H03B7/06 , H03L7/099 , H04B1/10 , H04B1/26
摘要： A novel and useful oscillator topology demonstrating an improved phase noise performance that exploits the time-variant phase noise model with insights into the phase noise conversion mechanisms. The oscillator is based on enforcing a pseudo-square voltage waveform around an LC tank by increasing the third-harmonic of the fundamental oscillation voltage through an additional impedance peak. Alternatively, the oscillator is based on enforcing clipped oscillation waveform by increasing the second harmonic of the fundamental oscillation voltage through an additional impedance peak. This auxiliary impedance peak is realized by a transformer with moderately coupled resonating windings. As a result, the effective impulse sensitivity function (ISF) decreases thus reducing the oscillator's effective noise factor such that a significant improvement in the oscillator phase noise and power efficiency are achieved.
摘要翻译： 一种新颖有用的振荡器拓扑，展示了改进的相位噪声性能，利用了相位噪声转换机制的深入了解的时变相位噪声模型。 振荡器基于通过增加基波振荡电压的三次谐波通过附加的阻抗峰值来强制在LC槽周围的伪平方电压波形。 或者，振荡器基于通过附加阻抗峰值增加基波振荡电压的二次谐波来强制削波振荡波形。 该辅助阻抗峰值由具有中等耦合谐振绕组的变压器实现。 结果，有效的脉冲灵敏度函数（ISF）降低，从而减小了振荡器的有效噪声因子，从而实现了振荡器相位噪声和功率效率的显着提高。
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7.发明授权High order discrete time charge rotating passive infinite impulse response filter 有权高阶离散时间充电旋转被动无限脉冲响应滤波器公开(公告)号：US09148125B2
公开(公告)日：2015-09-29
申请号：US14039466
申请日：2013-09-27
摘要： A novel and useful high-order discrete-time charge rotating (CR) infinite impulse response (IIR) low-pass filter is presented. The filter utilizes capacitors and a gm-cell, rather than operational amplifiers, and is thus compatible with digital nanoscale technology. A 7th-order charge-sampling and 6th-order voltage-sampling discrete time filter is disclosed. The order of the filter is easily extendable to higher orders. The charge rotating filter is process-scalable with Moore's law and amenable to digital nanoscale CMOS technology. Bandwidth of this filter is precise and robust to PVT variation. The filter exhibits very low power consumption per filter pole, low input-referred noise, wide tuning range, excellent linearity and low area per minimum bandwidth and filter pole.
摘要翻译： 提出了一种新颖有用的高阶离散时间充电旋转（CR）无限脉冲响应（IIR）低通滤波器。 滤波器采用电容器和gm单元，而不是运算放大器，因此与数字纳米技术相兼容。 公开了7阶电荷采样和6阶电压采样离散时间滤波器。 过滤器的顺序很容易扩展到更高的订单。 充电旋转滤波器具有Moore定律的过程可扩展性，适用于数字纳米级CMOS技术。 该滤波器的带宽对于PVT变化是精确和鲁棒的。 滤波器每个滤波器极性的功耗非常低，输入参考噪声低，调谐范围宽，线性度好，最小带宽和滤波极小。
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8.发明申请HIGH ORDER DISCRETE TIME CHARGE ROTATING PASSIVE INFINITE IMPULSE RESPONSE FILTER 有权高阶离散时间充电旋转无源无刺激反应过滤器公开(公告)号：US20140354376A1
公开(公告)日：2014-12-04
申请号：US14039466
申请日：2013-09-27
IPC分类号： H03H15/00
摘要： A novel and useful high-order discrete-time charge rotating (CR) infinite impulse response (IIR) low-pass filter is presented. The filter utilizes capacitors and a gm-cell, rather than operational amplifiers, and is thus compatible with digital nanoscale technology. A 7th-order charge-sampling and 6th-order voltage-sampling discrete time filter is disclosed. The order of the filter is easily extendable to higher orders. The charge rotating filter is process-scalable with Moore's law and amenable to digital nanoscale CMOS technology. Bandwidth of this filter is precise and robust to PVT variation. The filter exhibits very low power consumption per filter pole, low input-referred noise, wide tuning range, excellent linearity and low area per minimum bandwidth and filter pole.
摘要翻译： 提出了一种新颖有用的高阶离散时间充电旋转（CR）无限脉冲响应（IIR）低通滤波器。 滤波器采用电容器和gm单元，而不是运算放大器，因此与数字纳米技术相兼容。 公开了7阶电荷采样和6阶电压采样离散时间滤波器。 过滤器的顺序很容易扩展到更高的订单。 充电旋转滤波器具有Moore定律的过程可扩展性，适用于数字纳米级CMOS技术。 该滤波器的带宽对于PVT变化是精确和鲁棒的。 滤波器每个滤波器极性的功耗非常低，输入参考噪声低，调谐范围宽，线性度好，最小带宽和滤波极低。
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9.发明申请公开(公告)号：US20140080436A1
公开(公告)日：2014-03-20
申请号：US14027849
申请日：2013-09-16
CPC分类号： H03L7/00 , H03B1/00 , H03B5/1215 , H03B5/1228 , H03B5/124 , H03B5/1296 , H03B7/06 , H03L7/099 , H04B1/10 , H04B1/26
摘要： A novel and useful reconfigurable superheterodyne receiver that employs a 3rd order complex IQ charge-sharing band-pass filter (BPF) for image rejection and 1st order feedback based RF BPF for channel selection filtering. The operating RF input frequency of the receiver is 500 MHz to 1.2 GHz with varying high IF range of 33 to 80 MHz. The gain stages are inverter based gm stages and the total gain of the receiver is 35 dB and in-band IIP3 at mid gain is +10 dBm. The NF of the receiver is 6.7 dB which is acceptable for the receiver without an LNA. The architecture is highly reconfigurable and follows the technology scaling.
摘要翻译： 一种新颖有用的可重新配置的超外差接收机，其采用用于图像抑制的3阶复合IQ电荷共享带通滤波器（BPF）和用于信道选择滤波的基于1阶反馈的RF BPF。 接收机的工作RF输入频率为500 MHz至1.2 GHz，变化的高IF范围为33至80 MHz。 增益级是基于逆变器的gm级，接收机的总增益为35 dB，中间增益的带内IIP3为+10 dBm。 接收机的NF为6.7 dB，对于没有LNA的接收机，这是可以接受的。 该架构是高度可重构的，并遵循技术缩放。
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10.发明授权High resolution millimeter wave digitally controlled oscillator with reconfigurable distributed metal capacitor passive resonators 有权高分辨率毫米波数字控制振荡器，具有可重配置的分布式金属电容器无源谐振器公开(公告)号：US09118335B2
公开(公告)日：2015-08-25
申请号：US14027967
申请日：2013-09-16
CPC分类号： H03L7/00 , H03B1/00 , H03B5/1215 , H03B5/1228 , H03B5/124 , H03B5/1296 , H03B7/06 , H03L7/099 , H04B1/10 , H04B1/26
摘要： A novel and useful millimeter-wave digitally controlled oscillator (DCO) that achieve a tuning range greater than 10% and fine frequency resolution less than 1 MHz. Switched metal capacitors are distributed across a passive resonator for tuning the oscillation frequency. To obtain sub-MHz frequency resolution, tuning step attenuation techniques are used that exploit an inductor and a transformer. A 60-GHz fine-resolution inductor-based DCO (L-DCO) and a 60 GHz transformer-coupled DCO (T-DCO), both fabricated in 90 nm CMOS, are disclosed. The phase noise of both DCOs is lower than −90.5 dBc/Hz at 1 MHz offset across 56 to 62 GHz frequency range. The T-DCO achieves a fine frequency tuning step of 2.5 MHz, whereas the L-DCO tuning step is over one order of magnitude finer at 160 kHz.
摘要翻译： 一种新颖有用的毫米波数字控制振荡器（DCO），可实现大于10％的调谐范围和小于1 MHz的精细频率分辨率。 开关金属电容器分布在无源谐振器上，用于调谐振荡频率。 为了获得低频分辨率，采用调谐步进衰减技术，利用电感和变压器。 公开了一种以90nm CMOS制造的60GHz精细分辨率电感器DCO（L-DCO）和60GHz变压耦合DCO（T-DCO）。 在56至62 GHz频率范围内，两个DCO的相位噪声均低于-1MHz偏移时的-90.5 dBc / Hz。 T-DCO实现2.5MHz的精细频率调谐步骤，而L-DCO调谐步骤在160kHz下更精细超过一个数量级。
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