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1.发明授权公开(公告)号：US12107511B2
公开(公告)日：2024-10-01
申请号：US18616423
申请日：2024-03-26
发明人： Munir A. Al-Absi
CPC分类号： H02M7/219 , H02J50/001 , H02J50/20
摘要： A circuit and methods describing a complementary metal-oxide semiconductor (CMOS) rectifier for use in radio frequency (RF) energy harvesting with body biasing by the RF input to control the threshold voltage of each transistor. The CMOS rectifier includes an energy harvesting antenna, and multiple rectifier stages. The antenna receives electromagnetic radiation from the environment and generates a DC current. The oscillating input current is an RF+ positive current during a first half cycle and is an RF− negative current during a second half cycle. A first rectifier stage includes a first capacitor connected to the RF+ positive current, a second capacitor connected to the RF− negative current and a cross coupled CMOS circuit connected to the antenna.
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公开(公告)号：US12101037B2
公开(公告)日：2024-09-24
申请号：US18616450
申请日：2024-03-26
发明人： Munir A. Al-Absi
CPC分类号： H02M7/219 , H02J50/001 , H02J50/20
摘要： A circuit and methods describing a complementary metal-oxide semiconductor (CMOS) rectifier for use in radio frequency (RF) energy harvesting with body biasing by the RF input to control the threshold voltage of each transistor. The CMOS rectifier includes an energy harvesting antenna, and multiple rectifier stages. The antenna receives electromagnetic radiation from the environment and generates a DC current. The oscillating input current is an RF+ positive current during a first half cycle and is an RF− negative current during a second half cycle. A first rectifier stage includes a first capacitor connected to the RF+ positive current, a second capacitor connected to the RF− negative current and a cross coupled CMOS circuit connected to the antenna.
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公开(公告)号：US09553562B1
公开(公告)日：2017-01-24
申请号：US15169696
申请日：2016-05-31
CPC分类号： H03H11/04 , H03H11/483
摘要： The compact C-multiplier includes four MOSFETs operating in the subthreshold region using the translinear principle. The multiplier is controllable to meet designer requirements. A Tanner Tspice simulator is used to confirm the functionality of the design in 0.13 pm CMOS Technology. The circuit operates from a ±0.75 supply voltage. Simulation results indicate that the multiplication factor is large compared to existing designs.
摘要翻译： 紧凑型C乘法器包括使用跨导原理在亚阈值区域中工作的四个MOSFET。 乘法器是可控的，以满足设计师的要求。 Tanner Tspice模拟器用于在0.13 pm CMOS技术中确认设计的功能。 电路工作在±0.75电源电压。 仿真结果表明，与现有设计相比，倍增系数较大。
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公开(公告)号：US12113453B2
公开(公告)日：2024-10-08
申请号：US18616391
申请日：2024-03-26
发明人： Munir A. Al-Absi
CPC分类号： H02M7/219 , H02J50/001 , H02J50/20
摘要： A circuit and methods describing a complementary metal-oxide semiconductor (CMOS) rectifier for use in radio frequency (RF) energy harvesting with body biasing by the RF input to control the threshold voltage of each transistor. The CMOS rectifier includes an energy harvesting antenna, and multiple rectifier stages. The antenna receives electromagnetic radiation from the environment and generates a DC current. The oscillating input current is an RF+ positive current during a first half cycle and is an RF− negative current during a second half cycle. A first rectifier stage includes a first capacitor connected to the RF+ positive current, a second capacitor connected to the RF− negative current and a cross coupled CMOS circuit connected to the antenna.
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公开(公告)号：US09384371B2
公开(公告)日：2016-07-05
申请号：US14526474
申请日：2014-10-28
CPC分类号： G06G7/16
摘要： The compact CMOS current-mode analog multifunction circuit is based on an implementation using MOSFETs operating in a sub-threshold region and forming two overlapping translinear loops capable of performing multiplication, division, controllable gain current amplifier, current mode differential amplifier, and differential-input single-output current amplifier.
摘要翻译： 紧凑型CMOS电流模式模拟多功能电路基于使用在亚阈值区域中操作的MOSFET的实现，并形成能够执行乘法，分频，可控增益电流放大器，电流模式差分放大器和差分输入的两个重叠的跨线性回路 单输出电流放大器。
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6.发明授权CMOS logarithmic current generator and method for generating a logarithmic current 有权CMOS对数电流发生器和产生对数电流的方法公开(公告)号：US09298952B2
公开(公告)日：2016-03-29
申请号：US14083113
申请日：2013-11-18
IPC分类号： G06G7/24
CPC分类号： G06G7/24
摘要： A CMOS logarithmic current generator includes current mode circuitry having a design principle based on a Taylor's series expansion that approximates an exponential function. A MOSFET circuit provides a function generator core cell having a biasing current Ib. The FETs of the circuit are matched and are biased in the weak inversion region. Additional transistors are used to convert a pair of input currents to a pair of voltages to provide an output current based upon a current mode logarithmic function. The biasing current Ib can be varied to provide a variable gain in the circuit.
摘要翻译： CMOS对数电流发生器包括具有基于近似指数函数的泰勒级数展开的设计原理的电流模式电路。 MOSFET电路提供具有偏置电流Ib的功能发生器核心单元。 电路的FET匹配，并在弱反转区域被偏置。 附加晶体管用于将一对输入电流转换成一对电压，以基于当前模式对数函数提供输出电流。 可以改变偏置电流Ib以在电路中提供可变增益。
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公开(公告)号：US09176513B2
公开(公告)日：2015-11-03
申请号：US14243741
申请日：2014-04-02
摘要： The high dynamic range exponential current generator produces an output waveform (current/voltage) which is an exponential function of the input waveform (current/voltage). The exponential characteristics are obtained in BiCMOS or Bipolar technologies using the intrinsic characteristics (IC/VBE) of the bipolar transistors. The high dynamic range exponential current generator is biased in weak inversion region. MOSFETs biased in weak inversion region are used not to utilize the inherent exponential (IDS/VGS) relationship but to simply implement x2 and x4 terms using translinear loops. The term x4 is realized by two cascaded squaring units. The approximation equation used is ⅇ x ≅ 0.025 + ( 1 + 0.125 x ) 4 0.025 + ( 1 - 0.125 x ) 4 .
摘要翻译： 高动态范围指数电流发生器产生作为输入波形（电流/电压）的指数函数的输出波形（电流/电压）。 使用双极晶体管的固有特性（IC / VBE）在BiCMOS或双极技术中获得指数特性。 高动态范围指数电流发生器在弱反演区域偏置。 在弱反转区域中偏置的MOSFET不利用固有的指数（IDS / VGS）关系，而是简单地使用跨线性循环实现x2和x4项。 术语x4由两个级联平方单元实现。 所使用的近似方程式为ⅇx≅0.025 +（1 + 0.125×）4 0.025 +（1 - 0.125 x）4。
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公开(公告)号：US08610614B1
公开(公告)日：2013-12-17
申请号：US13910111
申请日：2013-06-04
申请人： King Fahd University of Petroleum and Minerals , King Abdulaziz City for Science and Technology
IPC分类号： H03M1/12
CPC分类号： H03M1/141
摘要： A CMOS current-mode folding amplifier circuit is provided that uses MOSFETs operating in relatively strong inversion. The CMOS current-mode folding amplifier circuit produces a saw-tooth shaped input-output characteristic which provides for relative precision in flash-type analog-to-digital converters. Furthermore, the CMOS current-mode folding amplifier circuit uses a plurality of simple current mirrors, in addition to biasing currents, for defining the switching levels. Accordingly, the current-mode amplifier requires less area on the chip and consumes less power relative to other analog preprocessing circuits. Moreover, the CMOS current-mode folding amplifier circuit is resilient to process, temperature and power supply variations. Tanner simulation tools using 0.35 μm CMOS technology confirm the functionality of the current-mode folding amplifier.
摘要翻译： 提供了CMOS电流模式折叠放大器电路，其使用在相对强的反相中工作的MOSFET。 CMOS电流模式折叠放大器电路产生锯齿形输入 - 输出特性，其提供闪存型模数转换器的相对精度。 此外，CMOS电流模式折叠放大器电路除了用于限定开关电平的偏置电流之外还使用多个简单的电流镜。 因此，电流模式放大器在芯片上需要更少的面积并且相对于其它模拟预处理电路消耗更少的功率。 此外，CMOS电流模式折叠放大器电路对处理，温度和电源变化具有弹性。 使用0.35 mum CMOS技术的Tanner模拟工具确认了当前模式折叠放大器的功能。
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公开(公告)号：US11747212B2
公开(公告)日：2023-09-05
申请号：US15902503
申请日：2018-02-22
发明人： Munir A. Al-Absi
IPC分类号： G01K7/01 , H01L27/088
CPC分类号： G01K7/01 , G01K7/015 , H01L27/088
摘要： The present disclosure relates to a compact temperature sensor displaying a temperature-resistance relationship. The temperature sensor comprises cross-coupled CMOS technology exhibits negative resistance, resulting in resistance-sensitive temperature sensing and amplification. The temperature sensor can be tuned to operate across a wide range of temperatures via modulation of a biasing current. The present disclosure further relates to subthreshold operation of CMOS technology.
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公开(公告)号：US08610486B1
公开(公告)日：2013-12-17
申请号：US13934171
申请日：2013-07-02
申请人： King Fahd University of Petroleum and Minerals , King Abdulaziz City for Science and Technology
IPC分类号： G06G7/16
CPC分类号： G06G7/16
摘要： A current-mode analog computational circuit can be controlled to produce multiplying, squaring, divider and inverse functions and corresponding current outputs. The current-mode analog computational circuit is based on an implementation using MOSFETs operating in a sub-threshold region as can provide relatively ultra-low power dissipation. Furthermore, the current-mode analog computational circuit can be operated from a ±0.75 V DC supply. Tanner simulation results conducted using a 0.35-μm TSMC CMOS process confirmed the functionality of the multiplying, squaring, divider and inverse functions of the circuit. The current-mode analog computational circuit advantageously can have a total power consumption of 2.3 μW, a total harmonic distortion is 1.1%, a maximum linearity error of 0.3% and a bandwidth of 2.3 MHz.
摘要翻译： 可以控制电流模式计算电路，以产生乘法，平方，除法和反函数和相应的电流输出。 电流模式模拟计算电路基于使用在亚阈值区域中操作的MOSFET的实现，因为可以提供相对超低功耗。 此外，电流模式模拟计算电路可以从±0.75 V直流电源工作。 使用0.35毫米TSMC CMOS工艺进行的Tanner仿真结果证实了电路的乘法，平方，除法和反函数的功能。 电流模拟计算电路有利地可以具有2.3WW的总功耗，总谐波失真为1.1％，最大线性误差为0.3％，带宽为2.3MHz。
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