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1. 发明授权

US07345547B2 Bias circuit for BJT amplifier 有权
标题翻译： BJT放大器的偏置电路
公开(公告)号：US07345547B2
公开(公告)日：2008-03-18
申请号：US11253203
申请日：2005-10-17
申请人： Nanlei Larry Wang , Walter A. Strifler
发明人： Nanlei Larry Wang , Walter A. Strifler
IPC分类号： H03G3/30
CPC分类号： H03F1/30 , H03F1/32 , H03F3/191 , H03F3/605 , H03F2200/18 , H03F2200/222 , H03F2200/391 , H03F2200/451
摘要： The embodiments of the present invention include a bias circuit for a power-amplifying device, which receives and amplifies an input RF signal having a series of RF cycles within a modulation envelop. The bias circuit compensates odd-order distortion processes by detecting the power in the input signal and providing a dynamic adjustment to a bias stimulus for the power-amplifying device within a time scale of the modulation envelope.
摘要翻译：本发明的实施例包括用于功率放大装置的偏置电路，其接收并放大在调制包络内具有一系列RF周期的输入RF信号。偏置电路通过检测输入信号中的功率并且在调制包络的时间尺度内为功率放大装置的偏置激励提供动态调整来补偿奇数失真处理。

2. 发明申请

US20050140457A1 Linearized power amplifier modulator in an RFID reader 审中-公开
标题翻译： RFID读写器中的线性化功率放大器调制器
公开(公告)号：US20050140457A1
公开(公告)日：2005-06-30
申请号：US11021946
申请日：2004-12-23
申请人： John Bellantoni
发明人： John Bellantoni
IPC分类号： G06K7/00 , H03K7/00
CPC分类号： G06K7/0008
摘要： An RFID reader accessible thorough a personal computer and includes a PC card interface and a controller both operating according to clock signals from a crystal oscillator. The RFID reader further includes a linearized power amplifier modulator in a transmit path, a receive chain capable of demodulating either class_1 or class_0 signals from RFID tags, and an integrated switching device for selecting one of a plurality of antenna for transmitting or receiving RF signals.
摘要翻译： RFID读写器可通过个人计算机访问，并且包括PC卡接口和控制器，两者均根据晶体振荡器的时钟信号进行操作。 RFID读取器还包括发送路径中的线性化功率放大器调制器，能够解调来自RFID标签的class_1或class_0信号的接收链，以及用于选择多个天线之一用于发送或接收RF信号的集成开关设备。

3. 发明授权

US07369811B2 System and method for sensitivity optimization of RF receiver using adaptive nulling 有权
标题翻译：使用自适应归零的RF接收机灵敏度优化的系统和方法
公开(公告)号：US07369811B2
公开(公告)日：2008-05-06
申请号：US11116494
申请日：2005-04-27
申请人： John Vincent Bellantoni
发明人： John Vincent Bellantoni
IPC分类号： H04B7/00
CPC分类号： G06K7/0008
摘要： The present invention provides sensitivity enhancement for a single antenna RFID interrogating device by separately coupling a nulling signal formed using a portion of a transmit signal into a receiver. The phase and amplitude of nulling signal can be adjusted so that the nulling signal cancels that a reflected transmit signal from the antenna, resulting in the small backscattered signal from the distant RFID tag to be more easily detected, and improving the sensitivity of the RFID receiver.
摘要翻译：本发明通过将使用发射信号的一部分形成的归零信号分别耦合到接收机中来提供单个天线RFID询问装置的灵敏度增强。可以调整归零信号的相位和幅度，使得零位信号消除来自天线的反射的发射信号，导致来自远距离RFID标签的小的反向散射信号被更容易地检测，并且提高RFID接收器的灵敏度。

4. 发明申请

US20050143026A1 Integrated switching device for routing radio frequency signals 有权
标题翻译：用于路由射频信号的集成开关装置
公开(公告)号：US20050143026A1
公开(公告)日：2005-06-30
申请号：US11021539
申请日：2004-12-23
申请人： John Bellantoni
发明人： John Bellantoni
IPC分类号： H04B1/04
CPC分类号： H04B1/0458 , H04B1/18 , H04B1/401 , H04B1/48
摘要： An RFID reader accessible thorough a personal computer and includes a PC card interface and a controller both operating according to clock signals from a crystal oscillator. The RFID reader further includes a linearized power amplifier modulator in a transmit path, a receive chain capable of demodulating either class_1 or class _0 signals from RFID tags, and an integrated switching device for selecting one of a plurality of antenna for transmitting or receiving RF signals.
摘要翻译： RFID读写器可通过个人计算机访问，并且包括PC卡接口和控制器，两者均根据晶体振荡器的时钟信号进行操作。 RFID读取器还包括发送路径中的线性化功率放大器调制器，能够解调来自RFID标签的class_1或class_0信号的接收链，以及用于选择多个天线之一用于发送或接收RF信号的集成开关设备。

5. 发明授权

US07235846B2 ESD protection structure with SiGe BJT devices 有权
标题翻译：具有SiGe BJT器件的ESD保护结构
公开(公告)号：US07235846B2
公开(公告)日：2007-06-26
申请号：US11116807
申请日：2005-04-27
申请人： Greg Fung
发明人： Greg Fung
IPC分类号： H01L23/62 , H01L29/72 , H01L29/74 , H01L31/111 , H01L31/119
CPC分类号： H01L27/0259 , H01L29/7378 , H01L2924/0002 , H01L2924/00
摘要： The present invention provides an ESD protection device or structure that exploits the high conductivity of a heavily doped heterojunction base of a standard SiGe bipolar junction transistor (BJT) cell. This improved ESD protection scheme further uses the combination of trench isolation and buried subcollector layer of the SiGe BJT to confine ESD current, minimizing parasitic substrate leakage and achieving large forward voltages while imposing minimal parasitic capacitive loads on a protected active device. Since the ESD protection structure is formed from conventional SiGe BJT transistor cells through modification of the contact metallization, it can be fabricated in an available SiGe BiCMOS fabrication process without additional processing steps, and characterization data already available for the SiGe BJTs can be used to model the performance of the ESD protection devices.
摘要翻译：本发明提供了利用标准SiGe双极结晶体管（BJT）电池的重掺杂异质结基极的高导电性的ESD保护器件或结构。这种改进的ESD保护方案进一步使用SiGe BJT的沟槽隔离和掩埋子集电极层的组合来限制ESD电流，最小化寄生衬底泄漏并实现大的正向电压，同时在受保护的有源器件上施加最小的寄生电容负载。由于ESD保护结构是由传统的SiGe BJT晶体管单元通过改变接触金属化形成的，所以可以在可用的SiGe BiCMOS制造工艺中制造出无需额外的处理步骤，而已经可用于SiGe BJT的表征数据可用于建模 ESD保护器件的性能。

6. 发明申请

US20070096823A1 Bias circuit for BJT amplifier 有权
标题翻译： BJT放大器的偏置电路
公开(公告)号：US20070096823A1
公开(公告)日：2007-05-03
申请号：US11253203
申请日：2005-10-17
申请人： Nanlei Wang , Walter Strifler
发明人： Nanlei Wang , Walter Strifler
IPC分类号： H03G3/10
CPC分类号： H03F1/30 , H03F1/32 , H03F3/191 , H03F3/605 , H03F2200/18 , H03F2200/222 , H03F2200/391 , H03F2200/451
摘要： The embodiments of the present invention include a bias circuit for a power-amplifying device, which receives and amplifies an input RF signal having a series of RF cycles within a modulation envelop. The bias circuit compensates odd-order distortion processes by detecting the power in the input signal and providing a dynamic adjustment to a bias stimulus for the power-amplifying device within a time scale of the modulation envelope.
摘要翻译：本发明的实施例包括用于功率放大装置的偏置电路，其接收并放大在调制包络内具有一系列RF周期的输入RF信号。偏置电路通过检测输入信号中的功率并且在调制包络的时间尺度内为功率放大装置的偏置激励提供动态调整来补偿奇数失真处理。

7. 发明授权

US07197279B2 Multiprotocol RFID reader 有权
标题翻译：多协议RFID阅读器
公开(公告)号：US07197279B2
公开(公告)日：2007-03-27
申请号：US11021302
申请日：2004-12-23
申请人： John Vincent Bellantoni
发明人： John Vincent Bellantoni
IPC分类号： H04B1/40 , H04B1/59
CPC分类号： G06K7/0008 , G06K7/10128 , G06K7/10316 , G06K7/10346 , G06K19/07741
摘要： An RFID reader accessible thorough a personal computer and includes a PC card interface and a controller both operating according to clock signals from a crystal oscillator. The RFID reader further includes a linearized power amplifier modulator in a transmit path, a receive chain capable of demodulating EPCglobal Class_1 and Class_0 signals from RFID tags, and an integrated switching device for selecting one of a plurality of antenna for transmitting or receiving RF signals.
摘要翻译： RFID读写器可通过个人计算机访问，并且包括PC卡接口和控制器，两者均根据晶体振荡器的时钟信号进行操作。 RFID读取器还包括发送路径中的线性化功率放大器调制器，能够解调来自RFID标签的EPCglobal Class_1和Class_0信号的接收链，以及用于选择多个天线之一用于发送或接收RF信号的集成开关设备。

8. 发明授权

US07012288B2 Heterojunction bipolar transistor having non-uniformly doped collector for improved safe-operating area 有权
标题翻译：异质结双极晶体管具有非均匀掺杂的集电极，用于改善安全工作面积
公开(公告)号：US07012288B2
公开(公告)日：2006-03-14
申请号：US10267215
申请日：2002-10-08
申请人： Chien Ping Lee , Hin Fai Chau , Nanlei Larry Wang , Clarence John Dunnrowicz , Yan Chen , Barry Jia-Fu Lin
发明人： Chien Ping Lee , Hin Fai Chau , Nanlei Larry Wang , Clarence John Dunnrowicz , Yan Chen , Barry Jia-Fu Lin
IPC分类号： H01L31/0336
CPC分类号： H01L29/7371 , H01L29/0821
摘要： The safe-operating area (SOA) in a heterojunction bipolar transistor (HBT) is improved by providing a collector region in the transistor having a graded (uniformly or stepped) doping between the base region and the underlying subcollector region with the collector doping being lower near the base and higher near the subcollector and with the collector doping being less than the doping of the subcollector. The non-uniformly doped collector reduces Kirk effect induced breakdown when collector current increases.
摘要翻译：异质结双极晶体管（HBT）中的安全操作区域（SOA）通过在晶体管中提供集电极区域来改善，晶体管在基极区域和下面的子集电极区域之间具有渐变（均匀或阶梯状）掺杂，集电极掺杂较低靠近基极并且在子集电极附近较高，并且集电极掺杂小于子集电极的掺杂。当集电极电流增加时，非均匀掺杂的集电极会降低Kirk效应引起的击穿。

9. 发明授权

US07239858B2 Integrated switching device for routing radio frequency signals 有权
标题翻译：用于路由射频信号的集成开关装置
公开(公告)号：US07239858B2
公开(公告)日：2007-07-03
申请号：US11021539
申请日：2004-12-23
申请人： John Vincent Bellantoni
发明人： John Vincent Bellantoni
IPC分类号： H04B1/40 , H04B1/18
CPC分类号： H04B1/0458 , H04B1/18 , H04B1/401 , H04B1/48
摘要： An RFID reader accessible thorough a personal computer and includes a PC card interface and a controller both operating according to clock signals from a crystal oscillator. The RFID reader further includes a linearized power amplifier modulator in a transmit path, a receive chain capable of demodulating either class_1 or class _0 signals from RFID tags, and an integrated switching device for selecting one of a plurality of antenna for transmitting or receiving RF signals.
摘要翻译： RFID读写器可通过个人计算机访问，并且包括PC卡接口和控制器，两者均根据晶体振荡器的时钟信号进行操作。 RFID读取器还包括发送路径中的线性化功率放大器调制器，能够解调来自RFID标签的class_1或class_0信号的接收链，以及用于选择多个天线之一用于发送或接收RF信号的集成开关设备。

10. 发明申请

US20070115098A1 RFID SYSTEM INCLUDING TAGS HAVING LOW RF SCATTERING MODE 审中-公开
标题翻译： RFID系统，包括具有低射频散射模式的标签
公开(公告)号：US20070115098A1
公开(公告)日：2007-05-24
申请号：US11427991
申请日：2006-06-30
申请人： Daniel Dobkin
发明人： Daniel Dobkin
IPC分类号： H04Q5/22
CPC分类号： G06K19/0723
摘要： A radio frequency identification (RFID) system includes a plurality of RFID tags addressable by a tag reader, with each tag comprising a RF antenna, an integrated circuit including a memory for identification data and coupled to the antenna, the integrated circuit being configured to have a first antenna load impedance when accessed by the tag reader and a second higher load impedance after access by tag reader whereby the tag switches to a low scattering state for a finite period of time to reduce scattering of signals from the tag reader.
摘要翻译：射频识别（RFID）系统包括可由标签读取器寻址的多个RFID标签，每个标签包括RF天线，集成电路，包括用于识别数据的存储器并耦合到天线，该集成电路被配置为具有当由标签读取器访问时，第一天线负载阻抗和由标签读取器访问之后的第二较高负载阻抗，由此标签在有限时间段内切换到低散射状态以减少来自标签读取器的信号的散射。

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