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1. 发明授权

US08968461B1 Concrete mix for electromagnetic wave/pulse shielding 有权
标题翻译：混凝土混合电磁波/脉冲屏蔽
公开(公告)号：US08968461B1
公开(公告)日：2015-03-03
申请号：US13472670
申请日：2012-05-16
申请人： Christopher Tuan , Lim Nguyen , Bing Chen
发明人： Christopher Tuan , Lim Nguyen , Bing Chen
IPC分类号： C04B14/48
CPC分类号： C04B14/022 , C04B14/024 , C04B14/48 , C04B28/04 , C04B40/001 , C04B2111/00258 , H01B1/16 , Y02W30/94 , C04B14/305 , C04B14/308 , C04B18/146 , C04B2103/32
摘要： Conductive concrete mixtures are described that are configured to provide EMP shielding and reflect and/or absorb, for instance, EM waves propagating through the conductive concrete mixture. The conductive concrete mixtures include cement, aggregate, water, metallic conductive material, and conductive carbon particles and/or magnetic material. The conductive material may include steel fibers, and the magnetic material may include taconite aggregate. The conductive concrete mixture may also include graphite powder, silica fume, and/or other supplementary cementitious materials (SCM). The conductive carbon particles may comprise from about zero to twenty-five percent (0-25%) of the conductive concrete mixture by weight and/or the magnetic material may comprise from about zero to fifty percent (0-50%) of the conductive concrete mixture by weight.
摘要翻译：描述了导电混凝土混合物，其被配置为提供EMP屏蔽并且反射和/或吸收例如通过导电混凝土混合物传播的EM波。导电混凝土混合物包括水泥，骨料，水，金属导电材料和导电碳颗粒和/或磁性材料。导电材料可以包括钢纤维，并且磁性材料可以包括铁灰石骨料。导电混凝土混合物还可以包括石墨粉，硅粉和/或其它辅助水泥材料（SCM）。导电碳颗粒可以包含按重量计约0.05％至25％（0-25％）的导电混凝土混合物，和/或磁性材料可包含约0-50％（0-50％）的导电混凝土混合物重量。

2. 发明申请

US20190115884A1 HIGH PERFORMANCE FOLDED CASCODE CURRENT SOURCE WITH DUAL MIRRORS CURRENT FEEDBACK 审中-公开
公开(公告)号：US20190115884A1
公开(公告)日：2019-04-18
申请号：US16158620
申请日：2018-10-12
申请人： Lim Nguyen
发明人： Lim Nguyen
IPC分类号： H03F3/45 , H03F1/22
摘要： Systems and methods for providing a high performance current source are described. In an example implementation, the current source includes transistors in dual current mirror configuration. The dual mirror configuration employs current feedback to increase the output resistance of the current source while achieving a wide voltage swing.

3. 发明授权

US06825444B1 Heated bridge deck system and materials and method for constructing the same 有权
标题翻译：加热桥面系统及其构造材料及方法
公开(公告)号：US06825444B1
公开(公告)日：2004-11-30
申请号：US09890445
申请日：2001-10-29
申请人： Christopher Y. Tuan , Sherif Yehia , Bing Chen , Lim Nguyen
发明人： Christopher Y. Tuan , Sherif Yehia , Bing Chen , Lim Nguyen
IPC分类号： H05B300
CPC分类号： E01D19/083 , E01C11/265 , H05B3/0004
摘要： A heated bridge deck (20) uses electrodes (24, 26) embedded within conductive concrete and connected to a power source to remove snow and ice accumulation. A cement-based mixture containing optimal amounts of conductive materials is molded into pre-formed slabs (22) placed atop the paved surface of a bridge deck. Alternatively, the conductive concrete may be cast in place on top of an existing bridge deck. A control unit with temperature and moisture sensors may be coupled to the heated bridge deck.
摘要翻译：加热桥面（20）使用嵌入在导电混凝土内的电极（24,26），并与电源相连以去除积雪。将含有最佳数量的导电材料的水泥基混合物模制成放置在桥面板铺设表面顶部的预成型板坯（22）中。或者，导电混凝土可以在现有的桥面板的顶部上铸造就位。具有温度和湿度传感器的控制单元可以联接到加热的桥面板。

4. 发明授权

US10848113B2 High performance folded cascode current source with dual mirrors current feedback 有权
公开(公告)号：US10848113B2
公开(公告)日：2020-11-24
申请号：US16158620
申请日：2018-10-12
申请人： Lim Nguyen
发明人： Lim Nguyen
IPC分类号： H03F3/45 , H03F1/22 , G05F3/26
CPC分类号： H03F3/45174 , G05F3/26 , H03F1/223 , H03F3/45121 , H03F3/45219 , H03F3/45273 , H03F2203/45
摘要： Systems and methods for providing a high performance current source are described. In an example implementation, the current source includes transistors in dual current mirror configuration. The dual mirror configuration employs current feedback to increase the output resistance of the current source while achieving a wide voltage swing.

5. 发明授权

US06442190B1 Method and system for self-encoding a sequential string of data symbols for transmission via communication systems 有权
标题翻译：用于自编码用于经由通信系统传输的数据符号的连续字符串的方法和系统
公开(公告)号：US06442190B1
公开(公告)日：2002-08-27
申请号：US09189187
申请日：1998-11-10
申请人： Lim Nguyen
发明人： Lim Nguyen
IPC分类号： H04B1707
CPC分类号： H04B1/70718
摘要： Disclosed is a method of “self-encoding” data symbols for transmission over spread-spectrum, (eg. (CDMA), (FDMA)), communication systems which utilizes encountered data symbols, in a sequence of data symbols, to develop data symbol energy spreading codes which are applied to encode subsequently encountered data symbols. The method includes decoding each encoded data symbol after it is transmitted to a receiver in the spread-spectrum communication system.
摘要翻译：公开了一种用于在扩频（例如（CDMA），（FDMA））上传输的数据符号“自编码”的方法，在数据符号序列中利用遇到的数据符号的通信系统来开发数据符号应用于编码随后遇到的数据符号的能量扩展码。该方法包括在将每个经编码的数据符号发送到扩频通信系统中的接收机之后进行解码。

6. 发明授权

US5760941A System and method for performing optical code division multiple access communication using bipolar codes 失效
标题翻译：使用双极性码进行光码分多址通信的系统和方法
公开(公告)号：US5760941A
公开(公告)日：1998-06-02
申请号：US609017
申请日：1996-02-29
申请人： James F. Young , Benhaam Aazhang , Lim Nguyen
发明人： James F. Young , Benhaam Aazhang , Lim Nguyen
IPC分类号： H04J14/00 , H04J14/08 , H04B10/04
CPC分类号： H04J14/005
摘要： An optical encoding and decoding system which performs code-division multiple access (CDMA) communication in the incoherent, or direct detection, optical domain using bipolar +1/-1 codes. The present invention uses code modulation and detection principles that permit all-optical implementation of the bipolar, +1/-1, code and correlation detection that have been developed for the radio frequency (RF) systems. This is possible in spite of the non-negative, or unipolar, +1/0, nature of the incoherent optical system that only detects and processes the signal intensity. The unipolar optical system of the present invention is equivalent to the bipolar RF system in that the correlation properties of the bipolar codes is completely preserved. The optical CDMA system can be realized both in time or frequency domain encoding with all-optical components.
摘要翻译：一种光学编码和解码系统，其使用双极+ 1 / -1码在非相干或直接检测光域中执行码分多址（CDMA）通信。本发明使用允许全光学实现针对射频（RF）系统开发的双极性，±1 / -1码和相关检测的码调制和检测原理。尽管只能检测和处理信号强度的非相干光学系统的非负或单极性的+1/0性质，这是可能的。本发明的单极光学系统相当于双极性RF系统，因为双极性代码的相关特性被完全保留。可以在具有全光学部件的时域或频域编码中实现光CDMA系统。

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