专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100277283A1 Systems and methods for RFID tag operation 审中-公开
标题翻译： RFID标签操作的系统和方法
公开(公告)号：US20100277283A1
公开(公告)日：2010-11-04
申请号：US12387460
申请日：2009-05-01
申请人： Scott M. Burkart , Ken A. Stroud , Joshua D. Anderson , Mark A. Chivers , Sujit Ravindran , Ross A. McClain, JR. , Jonathan E. Brown , James K. Burgess, III
发明人： Scott M. Burkart , Ken A. Stroud , Joshua D. Anderson , Mark A. Chivers , Sujit Ravindran , Ross A. McClain, JR. , Jonathan E. Brown , James K. Burgess, III
IPC分类号： H04Q5/22
CPC分类号： G06Q10/00 , H04Q2213/13095
摘要： A RFID tag system may be configured as a tag having a first band (e.g., multiple channel-based NBFM frequency band) transceiver to allow field programmability of tag behavior and onboard tag data. The RFID tag system may be configured to collect data from one or more local sensors through the first band link and store data points of interest in tag onboard storage. The RFID tag system may be configured to work in conjunction with a remote interrogating unit, and a handheld device or other local interrogating unit may be additionally or alternatively provided to communicate with such aRFID tag. Data that is stored on the RFID tag may be retrieved or changed, and/or the operation of the tag may be modified.
摘要翻译： RFID标签系统可以被配置为具有第一频带（例如，基于多个信道的NBFM频带）收发器的标签，以允许标签行为的现场可编程性和板载标签数据。 RFID标签系统可以被配置为通过第一频带链路从一个或多个本地传感器收集数据，并将感兴趣的数据点存储在标签板载存储器中。 RFID标签系统可以被配置为与远程询问单元一起工作，并且手持设备或其他本地询问单元可以被附加地或替代地提供以与这样的RID标签进行通信。可以检索或改变存储在RFID标签上的数据，和/或可以修改标签的操作。

2. 发明申请

US20100278214A1 Pulse-level interleaving for UWB systems 审中-公开
标题翻译： UWB系统的脉冲级交织
公开(公告)号：US20100278214A1
公开(公告)日：2010-11-04
申请号：US12387425
申请日：2009-05-01
申请人： Bryan L. Westcott , Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Ross A. McClain, JR. , Scott Burkart
发明人： Bryan L. Westcott , Gerald L. Fudge , Mark A. Chivers , Sujit Ravindran , Ross A. McClain, JR. , Scott Burkart
IPC分类号： H04B1/69
CPC分类号： H04B1/7163 , H04B1/71635 , H04B1/71637
摘要： Systems and methods are disclosed that provide pulse-level interleaving for multi-pulse-per-bit ultra wideband (UWB) transmit and receive processing techniques to provide significantly improved multi-access for UWB systems and, more particularly, for long range UWB systems. A bit stream is processed such that each bit in a bit stream is represented by a plurality of bits in a bit frame and then transmitted using a plurality of UWB pulses for each bit frame. Where on-off-keying (OOK) modulation is used, each logic “1” is sent out as a plurality of pulses, and each logic “0” is sent out as a plurality of non-pulses. Pulse-level interleaving (PLI) of the pulses across multiple bit frames prior to transmission is provided to allow for improved multi-access (MA) by a plurality of UWB transmitters operating at the same time. Rather than attempt to detect each pulse as it arrives at the receiver, the receiver instead first de-interleaves the pulses and then aggregates the energy from the multiple pulses within each bit frame. The aggregated pulse energy is then processed by a pulse detector to detect a pulse. Where OOK modulation is used, this pulse detection detects the existence of a pulse or the lack of a pulse within the bit frame.
摘要翻译：公开了提供用于多脉冲每比特超宽带（UWB）发射和接收处理技术的脉冲级交织的系统和方法，以提供用于UWB系统的显着改进的多接入，更具体地，针对远距离UWB系统。处理比特流，使得比特流中的每个比特由比特帧中的多个比特表示，然后使用针对每个比特帧的多个UWB脉冲进行发送。在使用开 - 关键（OOK）调制的情况下，每个逻辑“1”作为多个脉冲发出，每个逻辑“0”作为多个非脉冲发送出去。提供在发送之前跨多个位帧的脉冲的脉冲级交织（PLI），以允许由同时操作的多个UWB发射机改进多址（MA）。每个脉冲到达接收机时，不是尝试检测每个脉冲，而是首先对脉冲进行解交织，然后从每个位帧内的多个脉冲聚合能量。聚集的脉冲能量然后由脉冲检测器处理以检测脉冲。在使用OOK调制的情况下，该脉冲检测检测脉冲的存在或位帧内缺少脉冲。

3. 发明授权

US09362979B2 Ultra wideband time-delayed correlator 有权
标题翻译：超宽带时间延迟相关器
公开(公告)号：US09362979B2
公开(公告)日：2016-06-07
申请号：US14714680
申请日：2015-05-18
申请人： Mark A. Chivers , Sujit Ravindran
发明人： Mark A. Chivers , Sujit Ravindran
IPC分类号： H04B1/7163 , H04B1/7176
CPC分类号： H04B1/71637 , H04B1/71635 , H04B1/7176
摘要： The present invention is for a method and apparatus to improve an ultra wideband (UWB) digital receiver's performance sensitivity. A transmitted signal stream has each data bit having multiple identical modulated pulses separated by a constant time interval. The received signal stream is applied to a plurality of signal processing groups where the original signal is duplicated in each processing group. The duplicated signal stream in each signal processing group is delayed by a different constant time interval between modulated pulses in the original signal stream and the two signal streams in each signal processing group is correlated and magnitude summed and combined to form a final signal stream which is detected to improve the sensitivity of the receiver.
摘要翻译：本发明是为了提高超宽带（UWB）数字接收机的性能灵敏度的方法和装置。传输的信号流具有由恒定时间间隔隔开的具有多个相同调制脉冲的每个数据位。接收的信号流被应用于多个信号处理组，其中原始信号在每个处理组中被复制。每个信号处理组中的复制信号流被延迟原始信号流中的调制脉冲之间的不同的恒定时间间隔，并且每个信号处理组中的两个信号流相关并且幅度相加并组合以形成最终的信号流检测到提高接收机的灵敏度。

4. 发明申请

US20120201274A1 Ultra-wideband dual band magnitude summer apparatus and method 有权
标题翻译：超宽带双频带幅度夏季装置及方法
公开(公告)号：US20120201274A1
公开(公告)日：2012-08-09
申请号：US13374386
申请日：2011-12-23
申请人： Mark A. Chivers , Sujit Ravindran
发明人： Mark A. Chivers , Sujit Ravindran
IPC分类号： H04B1/69
CPC分类号： H04B1/71637
摘要： This invention relates to capturing and processing the full bandwidth of an Ultra-Wideband (UWB) signal. An incoming UWB signal is processed in two different analog signal bands in parallel and their magnitudes summed to facilitate a Field programmable gate array (FPGA) processing of the entire UWB bandwidth to minimize digital implementation loss and promote a higher range.
摘要翻译：本发明涉及捕获和处理超宽带（UWB）信号的全带宽。输入的UWB信号在两个不同的模拟信号频带中并行处理，并且它们的幅度相加，以便于整个UWB带宽的现场可编程门阵列（FPGA）处理，以最小化数字实现损耗并提高更高的范围。

5. 发明申请

US20100202566A1 System and method for improved spur reduction in direct RF receiver architectures 失效
标题翻译：直接RF接收机架构改进支线减少的系统和方法
公开(公告)号：US20100202566A1
公开(公告)日：2010-08-12
申请号：US12592777
申请日：2009-12-02
申请人： Gerald L. Fudge , Ross E. Bland , Sujit Ravindran , Mark A. Chivers
发明人： Gerald L. Fudge , Ross E. Bland , Sujit Ravindran , Mark A. Chivers
IPC分类号： H04L27/14 , H04L27/00
CPC分类号： H04L27/148 , H04L27/1566
摘要： Improved spur reduction architectures that improve linearity in direct radio frequency (RF) receiver architectures. Non-uniform sampling in the form of sampling clock phase (or frequency) modulation is used to induce phase (or frequency) modulation on signals that are being received from a given Nyquist zone. At the output of the ADC (analog-to-digital converter), the signals are de-modulated to remove the induced modulation based on the Nyquist zone that is being received. The de-modulation process results in non-desired spurious artifacts (interfering leakage signals and ADC spurs) being spread in the frequency domain. Strong spurious artifacts may be removed after measuring the induced modulation and de-modulating. For the case of weak spurious artifacts, the de-modulation for the desired Nyquist zone spread these signals in the frequency domain. Induced modulation on signals may also provide a dithering effect on the ADC.
摘要翻译：改进的直接射频（RF）接收机架构改善线性度的减少架构。以采样时钟相位（或频率）调制形式的非均匀采样用于对从给定奈奎斯特区域接收的信号进行相位（或频率）调制。在ADC（模拟 - 数字转换器）的输出端，信号被去调制，以消除基于接收到的奈奎斯特区域的感应调制。去调制过程导致在频域中扩展的非期望的伪伪影（干扰泄漏信号和ADC刺激）。在测量诱导的调制和解调后，可能会去除强杂散伪像。对于弱伪伪影的情况，期望的奈奎斯特地带的去调制在频域中扩展了这些信号。对信号的诱导调制也可能对ADC产生抖动效应。

6. 发明授权

US07436911B2 Nyquist folded bandpass sampling receivers with narrow band filters for UWB pulses and related methods 有权
标题翻译：奈奎斯特折叠带通采样接收机，具有窄带滤波器，用于UWB脉冲和相关方法
公开(公告)号：US07436911B2
公开(公告)日：2008-10-14
申请号：US11545641
申请日：2006-10-10
申请人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
发明人： Gerald L. Fudge , James E. Harvey , Mark A. Chivers , Sujit Ravindran
IPC分类号： H03D1/00
CPC分类号： H04B1/406 , H03M1/12 , H04B1/0003 , H04B1/71637
摘要： Nyquist folded bandpass sampling receivers are disclosed that utilize narrow band filters in parallel with wideband filters to enhance reception of ultra wideband (UWB) pulses. The addition of the narrow band filter facilitates the reception of ultra wideband signal pulses and, therefore, extends the Nyquist folding bandpass sampling receiver to allow improved processing of ultra wideband (UWB) pulses. RF sampling circuitry utilizing a modulated sampling clock signal can then better capture UWB pulse signals.
摘要翻译：公开了奈奎斯特折叠带通采样接收机，其利用与宽带滤波器并联的窄带滤波器来增强超宽带（UWB）脉冲的接收。窄带滤波器的添加有助于接收超宽带信号脉冲，因此扩展了奈奎斯特折叠带通采样接收机，以允许对超宽带（UWB）脉冲进行改进的处理。利用调制采样时钟信号的RF采样电路可以更好地捕获UWB脉冲信号。

7. 发明申请

US20150249481A1 ULTRA WIDEBAND TIME-DELAYED CORRELATOR 审中-公开
标题翻译：超声波宽带时间延迟器
公开(公告)号：US20150249481A1
公开(公告)日：2015-09-03
申请号：US14714680
申请日：2015-05-18
申请人： Mark A. Chivers , Sujit Ravindran
发明人： Mark A. Chivers , Sujit Ravindran
IPC分类号： H04B1/7163 , H04B1/717 , H04B1/709 , H04B1/7176
CPC分类号： H04B1/71637 , H04B1/71635 , H04B1/7176
摘要： The present invention is for a method and apparatus to improve an ultra wideband (UWB) digital receiver's performance sensitivity. A transmitted signal stream has each data bit having multiple identical modulated pulses separated by a constant time interval. The received signal stream is applied to a plurality of signal processing groups where the original signal is duplicated in each processing group. The duplicated signal stream in each signal processing group is delayed by a different constant time interval between modulated pulses in the original signal stream and the two signal streams in each signal processing group is correlated and magnitude summed and combined to form a final signal stream which is detected to improve the sensitivity of the receiver.
摘要翻译：本发明是为了提高超宽带（UWB）数字接收机的性能灵敏度的方法和装置。传输的信号流具有由恒定时间间隔隔开的具有多个相同调制脉冲的每个数据位。接收的信号流被应用于多个信号处理组，其中原始信号在每个处理组中被复制。每个信号处理组中的复制信号流被延迟原始信号流中的调制脉冲之间的不同的恒定时间间隔，并且每个信号处理组中的两个信号流相关并且幅度相加并组合以形成最终的信号流检测到提高接收机的灵敏度。

8. 发明授权

US08509354B2 System and method for improved spur reduction in direct RF receiver architectures 失效
标题翻译：直接RF接收机架构改进支线减少的系统和方法
公开(公告)号：US08509354B2
公开(公告)日：2013-08-13
申请号：US12592777
申请日：2009-12-02
申请人： Gerald L. Fudge , Ross E. Bland , Sujit Ravindran , Mark A. Chivers
发明人： Gerald L. Fudge , Ross E. Bland , Sujit Ravindran , Mark A. Chivers
IPC分类号： H04L27/00
CPC分类号： H04L27/148 , H04L27/1566
摘要： Improved spur reduction architectures that improve linearity in direct radio frequency (RF) receiver architectures. Non-uniform sampling in the form of sampling clock phase (or frequency) modulation is used to induce phase (or frequency) modulation on signals that are being received from a given Nyquist zone. At the output of the ADC (analog-to-digital converter), the signals are de-modulated to remove the induced modulation based on the Nyquist zone that is being received. The de-modulation process results in non-desired spurious artifacts (interfering leakage signals and ADC spurs) being spread in the frequency domain. Strong spurious artifacts may be removed after measuring the induced modulation and de-modulating. For the case of weak spurious artifacts, the de-modulation for the desired Nyquist zone spread these signals in the frequency domain. Induced modulation on signals may also provide a dithering effect on the ADC.
摘要翻译：改进的直接射频（RF）接收机架构改善线性度的减少架构。以采样时钟相位（或频率）调制形式的非均匀采样用于对从给定奈奎斯特区域接收的信号进行相位（或频率）调制。在ADC（模拟 - 数字转换器）的输出端，信号被去调制，以消除基于接收到的奈奎斯特区域的感应调制。去调制过程导致在频域中扩展的非期望的伪伪影（干扰泄漏信号和ADC刺激）。在测量诱导的调制和解调后，可能会去除强杂散伪像。对于弱伪伪影的情况，期望的奈奎斯特地带的去调制在频域中扩展了这些信号。对信号的诱导调制也可能对ADC产生抖动效应。

9. 发明授权

US08630357B2 Ultra-wideband dual band magnitude summer apparatus and method 有权
标题翻译：超宽带双频带幅度夏季装置及方法
公开(公告)号：US08630357B2
公开(公告)日：2014-01-14
申请号：US13374386
申请日：2011-12-23
申请人： Mark A. Chivers , Sujit Ravindran
发明人： Mark A. Chivers , Sujit Ravindran
IPC分类号： H04L27/00
CPC分类号： H04B1/71637
摘要： This invention relates to capturing and processing the full bandwidth of an Ultra-Wideband (UWB) signal. An incoming UWB signal is processed in two different analog signal bands in parallel and their magnitudes summed to facilitate a Field programmable gate array (FPGA) processing of the entire UWB bandwidth to minimize digital implementation loss and promote a higher range.
摘要翻译：本发明涉及捕获和处理超宽带（UWB）信号的全带宽。输入的UWB信号在两个不同的模拟信号频带中并行处理，并且它们的幅度相加，以便于整个UWB带宽的现场可编程门阵列（FPGA）处理，以最小化数字实现损耗并提高更高的范围。

10. 发明申请

US20120170618A1 Ultra wideband time-delayed correlator 审中-公开
标题翻译：超宽带时间延迟相关器
公开(公告)号：US20120170618A1
公开(公告)日：2012-07-05
申请号：US13199416
申请日：2011-08-30
申请人： Mark A. Chivers , Sujit Ravindran
发明人： Mark A. Chivers , Sujit Ravindran
IPC分类号： H04B1/707
CPC分类号： H04B1/7176 , H04B1/71635
摘要： The present invention is for a method and apparatus to improve an Ultra Wideband (UWB) digital receiver's performance sensitivity. A transmitted signal stream has each data bit having multiple identical modulated pulses separated by a constant time interval. The received signal stream is duplicated to create a second signal stream of identical modulated pulses to the original signal stream. The duplicated signal stream is delayed by the constant time interval between identical modulated pulses and the two signal streams correlated to form one signal stream which is detected to improve the sensitivity of the receiver.
摘要翻译：本发明是为了提高超宽带（UWB）数字接收机的性能灵敏度的方法和装置。传输的信号流具有由恒定时间间隔隔开的具有多个相同调制脉冲的每个数据位。所接收的信号流被复制以产生与原始信号流相同的调制脉冲的第二信号流。复制的信号流被延迟相同的调制脉冲与相关的两个信号流之间的恒定时间间隔，形成一个信号流，该信号流被检测以提高接收机的灵敏度。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式