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1.发明授权Single-ended polar transmitting circuit with current salvaging and substantially constant bandwidth 有权单端极性发射电路，具有当前的抢救和基本上恒定的带宽公开(公告)号：US08111181B2
公开(公告)日：2012-02-07
申请号：US12577075
申请日：2009-10-09
IPC分类号： H03M1/66
CPC分类号： H03C5/00 , H03D7/1441 , H03D7/1458 , H03D2200/0023
摘要： An embodiment of the invention provides a single-ended polar transmitting circuit. The single-ended polar transmitting circuit comprises a DAC, a differential-to-single-ended converter, a GmC filter and a load. The GmC filter comprises two gain stages, two filters, two switching devices, a translinear loop and a current mirror. When a second clock signal is high, a first current is conducted through the load, a second switching device and a second gain stage. When a first clock signal is high, a second current is conducted through a first switching device and the second gain stage. The first gain stage has a transconductance Gm1 and the second gain stage has a transconductance Gm2. The bandwidth of the GmC filter is approximately equal to the square root of the quantity (Gm1*Gm2)/(C1*C2). The bandwidth of the GmC filter is substantially a constant value.
摘要翻译： 本发明的实施例提供了一种单端极性发射电路。 单端极性发射电路包括DAC，差分到单端转换器，GmC滤波器和负载。 GmC滤波器包括两个增益级，两个滤波器，两个开关器件，一个跨线回路和一个电流镜。 当第二时钟信号为高时，通过负载，第二开关装置和第二增益级传导第一电流。 当第一时钟信号为高时，通过第一开关器件和第二增益级传导第二电流。 第一增益级具有跨导Gm1，第二增益级具有跨导Gm2。 GmC滤波器的带宽近似等于量的平方根（Gm1 * Gm2）/（C1 * C2）。 GmC滤波器的带宽基本上是一个恒定值。
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2.发明申请Active-Passive Continuous-Time Sigma-Delta Analog-to-Digital Converter Having Improved Linearity and Reduced Power Consumption 审中-公开有源无源连续时间Σ-Delta模数转换器具有改善的线性度和降低的功耗公开(公告)号：US20090224954A1
公开(公告)日：2009-09-10
申请号：US12042398
申请日：2008-03-05
IPC分类号： H03M1/34
摘要： An active-passive continuous-time analog-to-digital converter and a method of continuous-time sigma-delta analog-to-digital conversion. In certain embodiments, the converter has a reduced power consumption, and the method requires less power to carry out. One embodiment of the converter has a signal input and includes: (1) an input summing junction coupled to the signal input, (2) a folded cascode transconductor having an input coupled to the input summing junction and (3) a feedforward path that couples the signal input to at least two nodes within the folded cascode transconductor.
摘要翻译： 主动被动连续时间模数转换器和连续时间Σ-Δ模数转换的方法。 在某些实施例中，转换器具有降低的功耗，并且该方法需要更少的功率来执行。 转换器的一个实施例具有信号输入，并且包括：（1）耦合到信号输入的输入求和点，（2）具有耦合到输入求和结的输入的折叠共源共栅跨导体，以及（3）耦合 信号输入到折叠共源共栅跨导体内的至少两个节点。
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公开(公告)号：US07587190B2
公开(公告)日：2009-09-08
申请号：US11430391
申请日：2006-05-08
CPC分类号： G06F1/3203 , Y02D10/126
摘要： Various systems and methods for low power identification are described herein. For example, a radio frequency device including a radio frequency energy receiver. The radio frequency energy receiver is operable to receive a radio frequency energy and to convert the radio frequency energy to a DC current. In addition, the device further includes a first clock generator that generates a first clock at a first frequency and second clock generator that generates another clock based on the first clock. The first clock generator includes a duty cycle correction circuit. The second clock has a positive going clock edge for each edge of the first clock.
摘要翻译： 本文描述了用于低功率识别的各种系统和方法。 例如，包括射频能量接收器的射频装置。 射频能量接收器可操作以接收射频能量并将射频能量转换成直流电流。 另外，该装置还包括：第一时钟发生器，其以第一频率产生第一时钟;第二时钟发生器，其基于第一时钟生成另一个时钟。 第一时钟发生器包括占空比校正电路。 第二个时钟对于第一个时钟的每个边沿都有一个正向时钟沿。
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公开(公告)号：US07538673B2
公开(公告)日：2009-05-26
申请号：US11213063
申请日：2005-08-26
IPC分类号： G08B13/14
CPC分类号： G06K19/0723 , G06K19/0701
摘要： A voltage regulation circuit for an RFID circuit having a voltage limiter circuit including a current sensing element for sensing current through the voltage limiter circuit. The voltage limiter generates a limited voltage. A voltage regulator is coupled to the limited voltage for generating a regulated output voltage. The voltage regulator has a dynamic biasing current responsive to an output of the sensing element for increasing bandwidth of the voltage regulator when current in the voltage limiter circuit increases.
摘要翻译： 一种用于RFID电路的电压调节电路，具有包括用于感测通过限压器电路的电流的电流检测元件的限压器电路。 电压限制器产生有限的电压。 电压调节器耦合到限制电压以产生稳定的输出电压。 电压调节器具有响应于感测元件的输出的动态偏置电流，用于在电压限制器电路中的电流增加时增加电压调节器的带宽。
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5.发明申请SINGLE-ENDED POLAR TRANSMITTING CIRCUIT WITH CURRENT SALVAGING AND SUBSTANTIALLY CONSTANT BANDWIDTH 有权具有电流稳定和极大持续带宽的单端极性发射电路公开(公告)号：US20110084864A1
公开(公告)日：2011-04-14
申请号：US12577075
申请日：2009-10-09
IPC分类号： H03M1/66
CPC分类号： H03C5/00 , H03D7/1441 , H03D7/1458 , H03D2200/0023
摘要： An embodiment of the invention provides a single-ended polar transmitting circuit. The single-ended polar transmitting circuit comprises a DAC, a differential-to-single-ended converter, a GmC filter and a load. The GmC filter comprises two gain stages, two filters, two switching devices, a translinear loop and a current mirror. When a second clock signal is high, a first current is conducted through the load, a second switching device and a second gain stage. When a first clock signal is high, a second current is conducted through a first switching device and the second gain stage. The first gain stage has a transconductance Gm1 and the second gain stage has a transconductance Gm2. The bandwidth of the GmC filter is approximately equal to the square root of the quantity (Gm1*Gm2)/(C1*C2). The bandwidth of the GmC filter is substantially a constant value.
摘要翻译： 本发明的实施例提供了一种单端极性发射电路。 单端极性发射电路包括DAC，差分到单端转换器，GmC滤波器和负载。 GmC滤波器包括两个增益级，两个滤波器，两个开关器件，一个跨线回路和一个电流镜。 当第二时钟信号为高时，通过负载，第二开关装置和第二增益级传导第一电流。 当第一时钟信号为高时，通过第一开关器件和第二增益级传导第二电流。 第一增益级具有跨导Gm1，第二增益级具有跨导Gm2。 GmC滤波器的带宽近似等于量的平方根（Gm1 * Gm2）/（C1 * C2）。 GmC滤波器的带宽基本上是一个恒定值。
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6.发明申请公开(公告)号：US20110080310A1
公开(公告)日：2011-04-07
申请号：US12573378
申请日：2009-10-05
IPC分类号： H03M1/66
CPC分类号： H03M1/0665 , H03M1/747
摘要： In accordance with at least some embodiments, an electronic device comprises a digital-to-analog converter (DAC) having a DAC element array. Reference-rotated data weighted averaging (RRDWA) is applied to the DAC element array.
摘要翻译： 根据至少一些实施例，电子设备包括具有DAC元件阵列的数模转换器（DAC）。 参考旋转数据加权平均（RRDWA）被应用于DAC元件阵列。
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7.发明授权公开(公告)号：US07916058B1
公开(公告)日：2011-03-29
申请号：US12573378
申请日：2009-10-05
IPC分类号： H03M1/66
CPC分类号： H03M1/0665 , H03M1/747
摘要： In accordance with at least some embodiments, an electronic device comprises a digital-to-analog converter (DAC) having a DAC element array. Reference-rotated data weighted averaging (RRDWA) is applied to the DAC element array.
摘要翻译： 根据至少一些实施例，电子设备包括具有DAC元件阵列的数模转换器（DAC）。 参考旋转数据加权平均（RRDWA）被应用于DAC元件阵列。
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