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

US20060072688A1 Wireless communication system and method with frequency burst acquisition feature using autocorrelation 有权
标题翻译：采用自相关的无线通信系统和频率突发采集特征的方法
公开(公告)号：US20060072688A1
公开(公告)日：2006-04-06
申请号：US10954791
申请日：2004-09-30
申请人： Jing Liang , Marvin Vis , Richard Behrens
发明人： Jing Liang , Marvin Vis , Richard Behrens
IPC分类号： H04L27/06
CPC分类号： H04L27/22 , H04L2027/0028 , H04L2027/0057 , H04L2027/0095
摘要： A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. In one embodiment, the system includes FB search hardware that operates in two modes, namely an FB location mode with narrowband interference (e.g. CW or continuous wave) detection and an FB location mode without such narrowband interference detection, depending on whether a CW signal (carrier or other narrowband interferer) is present or not.
摘要翻译：提供了一种通过分析接收信号的自相关函数来检测频率突发（FB）的无线通信系统。该系统可以适应与较便宜的参考频率晶体相关联的相对较大的频率偏移。在一个实施例中，系统包括以两种模式操作的FB搜索硬件，即具有窄带干扰（例如CW或连续波）检测的FB位置模式和没有这种窄带干扰检测的FB位置模式，这取决于CW信号载波或其他窄带干扰源）存在或不存在。

2. 发明申请

US20060067437A1 Wireless communication system and method with frequency burst acquisition feature using autocorrelation 有权
标题翻译：采用自相关的无线通信系统和频率突发采集特征的方法
公开(公告)号：US20060067437A1
公开(公告)日：2006-03-30
申请号：US10955584
申请日：2004-09-30
申请人： Marvin Vis , Jing Liang , Richard Behrens , Samuel Rousselin
发明人： Marvin Vis , Jing Liang , Richard Behrens , Samuel Rousselin
IPC分类号： H04L27/06
CPC分类号： H04L27/22 , H04L2027/0028 , H04L2027/0057 , H04L2027/0095
摘要： A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. The system employs a multi-mode filter including an FB filter and a channelization filter. In one embodiment, the FB filter is employed until an FB is located and then, once the FB is located, the channelization filter is employed to receive signals.
摘要翻译：提供了一种通过分析接收信号的自相关函数来检测频率突发（FB）的无线通信系统。该系统可以适应与较便宜的参考频率晶体相关联的相对较大的频率偏移。该系统采用包括FB滤波器和信道化滤波器的多模式滤波器。在一个实施例中，使用FB滤波器直到FB被定位，然后一旦FB被定位，则使用信道化滤波器来接收信号。

3. 发明授权

US2853061A Internal combustion engine 失效
公开(公告)号：US2853061A
公开(公告)日：1958-09-23
申请号：US65225157
申请日：1957-04-11
申请人： WOLFGANG HENRY RICHARD BEHRENS
发明人： LUDWIG ELSBETT
IPC分类号： F02B25/00
CPC分类号： F02B25/00 , F02B2700/031

4. 发明申请

US20060141973A1 Digital architecture for radio-frequency apparatus and associated methods 有权
公开(公告)号：US20060141973A1
公开(公告)日：2006-06-29
申请号：US11287995
申请日：2005-11-28
申请人： Richard Behrens , Tod Paulus , Mark Spurbeck , Vishnu Srinivasan , Donald Kerth , Jeffrey Scott , G. Tuttle , G. Vishakhadatta
发明人： Richard Behrens , Tod Paulus , Mark Spurbeck , Vishnu Srinivasan , Donald Kerth , Jeffrey Scott , G. Tuttle , G. Vishakhadatta
IPC分类号： H04B1/26 , H04B1/28
CPC分类号： H04B1/28 , H04B1/0003 , H04B1/38 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

5. 发明申请

US20050003762A1 Partitioned radio-frequency apparatus and associated methods 有权
标题翻译：分频射频设备及相关方法
公开(公告)号：US20050003762A1
公开(公告)日：2005-01-06
申请号：US10878880
申请日：2004-06-28
申请人： Donald Kerth , Richard Behrens , Jeffrey Scott , G. Vishakhadatta , G. Tuttle , Vishnu Srinivasan
发明人： Donald Kerth , Richard Behrens , Jeffrey Scott , G. Vishakhadatta , G. Tuttle , Vishnu Srinivasan
IPC分类号： H04B1/28 , H04B1/40 , H04B15/02 , H04B15/04 , H04B1/10
CPC分类号： H04B1/109 , H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064 , H04L27/2649
摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
摘要翻译：射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋于降低。

6. 发明授权

US2744508A Internal combustion engines 失效
公开(公告)号：US2744508A
公开(公告)日：1956-05-08
申请号：US34937953
申请日：1953-04-17
申请人： WOLFGANG HENRY RICHARD BEHRENS
发明人： LUDWIG ELSBETT
IPC分类号： F01P1/02 , F02B33/00
CPC分类号： F01P1/02 , F02B33/00 , F02M2700/331

7. 发明申请

US20070054629A1 PARTITIONING OF RADIO-FREQUENCY APPARATUS 有权
标题翻译：无线电频率设备的分配
公开(公告)号：US20070054629A1
公开(公告)日：2007-03-08
申请号：US10730404
申请日：2003-12-08
申请人： James Maligeorgos , Augusto Marques , Lysander Lim , G. Tuttle , Aslamali Rafi , Tod Paulus , Gregory Uehara , Jeffrey Scott , Richard Behrens , Donald Kerth , G. Vishakhadatta , Vishnu Srinivasan , Caiyi Wang
发明人： James Maligeorgos , Augusto Marques , Lysander Lim , G. Tuttle , Aslamali Rafi , Tod Paulus , Gregory Uehara , Jeffrey Scott , Richard Behrens , Donald Kerth , G. Vishakhadatta , Vishnu Srinivasan , Caiyi Wang
IPC分类号： H04B1/38
CPC分类号： H04B1/30 , H03J2200/10 , H04L27/0002
摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.
摘要翻译：包括生成具有可变频率的参考信号的晶体振荡器电路的收发器电路和频率修改电路的射频（RF）设备的组件可以以各种方式被划分，例如作为一个或多个单独的集成电路。频率修改电路可以被实现为包括数字控制的晶体振荡器（“DCXO”）电路和晶体的晶体振荡器电路的一部分。频率修改电路可以包括至少一个可变电容器件，并且可以用于产生具有可调频率的参考信号。可调参考信号可以被提供给RF装置的其他部件，和/或RF装置可以被配置为向基带处理器电路提供可调参考信号。自动频率控制（AFC）电路可以与RF电路的其它组件集成，并且可以基于例如从温度传感器接收的信号来生成用于频率修改电路的频率控制信号。数模转换器（DAC）电路可以与RF电路的其他部件集成，以实现从基带处理器电路到RF电路的全数字频率控制通信。

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