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1. 发明申请

WO2014143320A2 WIDE BAND RECONFIGURABLE PLANAR ANTENNA WITH OMNIDIRECTIONAL AND DIRECTIONAL PATTERNS 审中-公开
标题翻译：宽带可重构平面天线，具有网络和方向图案
公开(公告)号：WO2014143320A2
公开(公告)日：2014-09-18
申请号：PCT/US2013/076816
申请日：2013-12-20
申请人： DREXEL UNIVERSITY , ADANT TECHNOLOGIES, INC.
发明人： PATRON, Damiano , DANDEKAR, Kapil, R. , PIAZZA, Daniele
IPC分类号： H01Q3/26
CPC分类号： H01Q3/24 , H01Q1/38 , H01Q3/44 , H01Q9/44 , H01Q21/205 , H01Q21/30
摘要： A planar reconfigurable antenna that is capable of generating omnidirectional and directional radiation patterns over a wide frequency band or over multiple frequency bands includes a substrate, one or more pairs of conductive elements on at least one side of the substrate, a common RF feed point, and respective switches that selectively connects one or all of the conductive elements to the common RF feed point. An omni-directional radiation pattern is generated when all of the conductive elements are connected to the common RF feed point, while a directional radiation pattern is generated when only a pair of conductive elements on opposite sides of the substrate are connected to the common RF feed point. In the directional radiation mode, the conductive elements that are not connected to the common RF feed point act as a reflector for other conductive elements that are connected to the common RF feed point.
摘要翻译：能够在宽频带或多个频带上产生全向和定向辐射图案的平面可重构天线包括衬底，衬底的至少一侧上的一对或多对导电元件，公共RF馈电点，以及各个开关，其选择性地将一个或所有导电元件连接到公共RF馈电点。当所有导电元件连接到公共RF馈电点时，产生全向辐射图，而当基板的相对侧上仅一对导电元件连接到公共RF馈电时产生定向辐射图点。在定向辐射模式中，未连接到公共RF馈电点的导电元件用作连接到公共RF馈电点的其它导电元件的反射器。

2. 发明申请

WO2014138204A1 SMART KNITTED FABRICS 审中-公开
标题翻译：智能针织面料
公开(公告)号：WO2014138204A1
公开(公告)日：2014-09-12
申请号：PCT/US2014/020681
申请日：2014-03-05
申请人： DREXEL UNIVERSITY , PHILADELPHIA HEALTH & EDUCATION CORPORATION d/b/a DREXEL UNIVERSITY COLLEGE OF MEDICINE
发明人： DANDEKAR, Kapil, R. , DION, Genevieve , FONTECCHIO, Adam, K. , KURZWEG, Timothy, P. , PATRON, Damiano , MONTGOMERY, Owen
IPC分类号： A61B5/02
CPC分类号： A61B5/6804 , A61B5/0002 , A61B5/0024 , A61B5/0205 , A61B5/04085 , A61B5/0476 , A61B5/4356 , A61B5/4362 , A61B5/4519 , A61B5/4818 , A61B5/742 , D04B1/12 , D04B1/24 , D04B1/243 , D04B35/00 , D10B2403/02431 , G06F3/016 , G06F3/041 , H05K1/038
摘要： Knitting machines are used to intermesh conductive yarns into loops resulting in knitted fabrics. The knitting machine is adapted to import different types of yarns (conductive and non- conductive) directly into the knit structure. Combining conductive yarns and knitting systems allows for integration of electrical or mechanical component designs into existing clothing fabrication processes, avoiding current limitations of attaching or gluing conductive fabrics or other components over various materials. Starting with a planar design of an antenna, RFID tag, or some other electronic structure, the layout is converted into a CAD knitting program including a grid representing stitches. The CAD specifications of the final design/product are exported to the knitting machines so that the knitting machine may make conductive fabrics in accordance with the CAD specifications. The conductive fabrics are knitted into a variety of garments that monitor the vital signs of the wearer, including the fetus of an expectant mother.
摘要翻译：针织机用于将导电纱线互相啮合，形成针织物。针织机适用于将不同类型的纱线（导电和非导电）直接导入编织结构中。结合导电纱线和编织系统允许将电气或机械部件设计集成到现有的服装制造工艺中，避免了导电织物或其他部件在各种材料上附着或胶合的现有限制。从天线，RFID标签或其他电子结构的平面设计开始，布局被转换成包括表示针迹的网格的CAD编织程序。最终设计/产品的CAD规格出口到针织机，以便针织机根据CAD规格制作导电织物。导电织物被编织成各种衣服，其监测佩戴者的生命体征，包括孕妇的胎儿。

3. 发明申请

WO2013192265A1 RECONFIGURABLE ANTENNAS FOR PERFORMANCE ENHANCEMENT OF INTERFERENCE NETWORKS EMPLOYING INTERFERENCE ALIGNMENT 审中-公开
标题翻译：干扰网络性能提升的可重构天线使用干扰对齐
公开(公告)号：WO2013192265A1
公开(公告)日：2013-12-27
申请号：PCT/US2013/046468
申请日：2013-06-19
申请人： DREXEL UNIVERSITY
发明人： BAHL, Rohit , GULATI, Nikhil , DANDEKAR, Kapil, R. , JAGGARD, Dwight, L.
IPC分类号： H04B7/04
CPC分类号： H04B15/00 , H04B7/0452 , H04B7/0456 , H04B7/0617 , H04L27/2601
摘要： By using reconfigurable antenna based pattern diversity, an optimal channel can be realized in order to maximize the distance between two subspaces, thereby increasing sum-rate. The inventors show the benefits of pattern reconfigurability using real-world channels, measured in a MIMO-OFDM interference network. The results are quantified with two different reconfigurable antenna architectures. An additional 47% gain in choral distance and 45% gain in sum capacity were achieved by exploiting pattern diversity with IA. Due to optimal channel selection, the performance of IA can also be improved in a low SNR regime.
摘要翻译：通过使用基于可重构天线的模式分集，可以实现最佳信道，以便最大化两个子空间之间的距离，从而增加总和速率。本发明人使用在MIMO-OFDM干扰网络中测量的真实世界信道来显示模式可重构性的优点。结果用两种不同的可重构天线架构进行量化。通过利用IA的模式多样性，实现了合唱距离增加了47％的增长和总和能力的45％的增长。由于最优信道选择，IA的性能也可以在低SNR方案中得到改善。

4. 发明申请

WO2018132796A1 PHYSICAL GATE BASED PREAMBLE OBFUSCATION FOR SECURING WIRELESS COMMUNICATION 审中-公开
公开(公告)号：WO2018132796A1
公开(公告)日：2018-07-19
申请号：PCT/US2018/013728
申请日：2018-01-15
申请人： DREXEL UNIVERSITY
发明人： CHACKO, James, J. , DANDEKAR, Kapil, R. , JACOVIC, Marko , JURETUS, Kyle , KANDASAMY, Nagarajan , SAHIN, Cem , SAVIDIS, Ioannis
IPC分类号： H04K1/04 , H04K1/02 , H04K1/10 , H04L29/06 , H04W12/02 , H04W12/04
摘要： A physical layer based technique secures wireless communication between a transmitter and receiver. The technique involves obfuscating the preamble data of the baseband signal through unique keys that are generated at the transmitter and the receiver based on channel characteristics known only to them.

5. 发明申请

WO2011116289A1 RECONFIGURABLE ANTENNAS AND CONFIGURATION SELECTION METHODS FOR AD-HOC NETWORKS 审中-公开
标题翻译：可重构天线和配置选择方法用于AD-HOC网络
公开(公告)号：WO2011116289A1
公开(公告)日：2011-09-22
申请号：PCT/US2011/029008
申请日：2011-03-18
申请人： DREXEL UNIVERSITY , PIAZZA, Daniele , KOUNTOURIOTIS, John , D'AMICO, Michele , DANDEKAR, Kapil, R. , MOOKIAH, Prathaban
发明人： PIAZZA, Daniele , KOUNTOURIOTIS, John , D'AMICO, Michele , DANDEKAR, Kapil, R. , MOOKIAH, Prathaban
IPC分类号： H04L12/28
CPC分类号： H01Q21/29 , H01Q1/007 , H01Q3/24 , H01Q5/342 , H01Q9/0407 , H01Q9/0435 , H01Q9/145 , H01Q9/285 , H01Q13/203 , H01Q21/062 , H01Q21/08 , H04B7/04 , H04W84/18 , H04W88/06
摘要： Reconfigurable antennas in an ad-hoc network are provided where all nodes employ MIMO/SIMO/MISO communication techniques. Three types of reconfigurable antennas: Reconfigurable Printed Dipole Array (RPDA), Reconfigurable Circular Patch Antenna (RCPA) and Two-Port Reconfigurable CRLH Leaky Wave Antennas are used. The RPDA, RCPA and the CRLH Leaky Wave antennas have a different number of configurations as well as different degrees of pattern diversity between possible configurations. To effectively use these antennas in a network, the performance of centralized and decentralized antenna configuration selection schemes are quantified for reconfiguration at one or both link ends. The sum capacity of the network is used as a metric to quantify the performance of these antennas in measured and simulated network channels.
摘要翻译：在所有节点采用MIMO / SIMO / MISO通信技术的情况下，提供了自组织网络中的可重新配置的天线。三种类型的可重构天线：可重构可编配偶极阵列（RPDA），可重配置圆形补片天线（RCPA）和双端口可重构CRLH泄漏波天线。 RPDA，RCPA和CRLH泄漏波天线在可能的配置之间具有不同的配置数量以及不同程度的模式分集。为了在网络中有效地使用这些天线，集中式和分散式天线配置选择方案的性能被量化以在一个或两个链路端重新配置。网络的总容量用作量度这些天线在测量和模拟网络信道中的性能的度量。

6. 发明申请

WO2013086311A1 A JOINT BIT LOADING AND SYMBOL ROTATION SCHEME FOR MULTI-CARRIER SYSTEMS IN SISO AND MIMO LINKS 审中-公开
标题翻译： SISO和MIMO链路中的多载波系统的联合位加载和符号旋转方案
公开(公告)号：WO2013086311A1
公开(公告)日：2013-06-13
申请号：PCT/US2012/068431
申请日：2012-12-07
申请人： DREXEL UNIVERSITY
发明人： SOSA, Guillermo , DANDEKAR, Kapil, R. , BIELINSKI, Magdalena , WANUGA, Kevin
IPC分类号： H04J11/00
CPC分类号： H04L27/2618 , H04L5/0064 , H04L27/2615 , H04W52/16 , H04W52/42
摘要： The problems of high peak to average power ratio (PAPR) in multi-carrier systems and throughput improvement in multi-carrier systems by PAPR-aware rate adaptive bit loading are addressed by implementing two symbol rotation-inversion algorithms that reduce the peak to average power ratio in multi carrier OFDM systems jointly with rate adaptation. The method combines the benefits of bit allocation and symbol rotation to reduce the PAPR in OFDM communication systems and thus improve system range and robustness to noise. When coupled with adaptive bit loading techniques, these PAPR remediation strategies can substantially increase link throughput. Symbol rotation results in more than one order of magnitude BER reduction for SISO OFDM and one order of magnitude reduction in MIMO OFDM.
摘要翻译：通过PAPR感知速率自适应位负载，多载波系统中的高峰值平均功率比（PAPR）和多载波系统的吞吐量改善的问题通过实现两个符号旋转反演算法来解决，这两种算法降低了峰值对平均功率多载波OFDM系统中的速率匹配率。该方法结合了比特分配和符号旋转的优点，以减少OFDM通信系统中的PAPR，从而提高系统范围和噪声鲁棒性。当与自适应位加载技术相结合时，这些PAPR修复策略可以显着增加链路吞吐量。符号旋转导致SISO OFDM的BER降低超过一个数量级，MIMO OFDM中降低一个数量级。

7. 发明申请

WO2010126876A1 TRANSPARENT CONFORMAL POLYMER ANTENNAS FOR RFID AND OTHER WIRELESS COMMUNICATIONS APPLICATIONS 审中-公开
标题翻译： RFID和其他无线通信应用的透明一致的聚合物天线
公开(公告)号：WO2010126876A1
公开(公告)日：2010-11-04
申请号：PCT/US2010/032541
申请日：2010-04-27
申请人： DREXEL UNIVERSITY , FONTECCHIO, Adam, K. , DANDEKAR, Kapil, R. , KURZWEG, Timothy
发明人： FONTECCHIO, Adam, K. , DANDEKAR, Kapil, R. , KURZWEG, Timothy
IPC分类号： H01R13/20
CPC分类号： H01Q1/38 , G06K19/07773 , H01Q1/2208 , H01Q1/2225 , H01Q1/36 , H01Q9/065 , H01Q9/16
摘要： An optically transparent conformal polymer antenna and a method for producing the antenna from optically transparent conductive polymers. The method includes selecting an antenna design; providing an optically transparent conductive polymer material capable of being printed using an ink-jet printer device; and printing layers of the polymer in the desired antenna design pattern onto a substrate. The surface tension of the polymer solution is adjusted to allow the material to pass through a printer head for printing on a flexible substrate. The material is modified to have a higher conductivity than regular conductive polymer materials so that a suitable antenna may be formed.
摘要翻译：光学透明的保形聚合物天线和由光学透明导电聚合物制造天线的方法。该方法包括选择天线设计; 提供能够使用喷墨打印机装置打印的光学透明导电聚合物材料; 并将所需的天线设计图案中的聚合物层印刷到基底上。调节聚合物溶液的表面张力，以使材料通过打印头以在柔性基底上印刷。该材料被修改为具有比常规导电聚合物材料更高的导电性，使得可以形成合适的天线。

8. 发明申请

WO2010085722A1 SYSTEMS AND METHODS FOR SELECTING RECONFIGURABLE ANTENNAS IN MIMO SYSTEMS 审中-公开
标题翻译：在MIMO系统中选择可重构天线的系统和方法
公开(公告)号：WO2010085722A1
公开(公告)日：2010-07-29
申请号：PCT/US2010/021917
申请日：2010-01-25
申请人： DREXEL UNIVERSITY , PIAZZA, Daniele , KOUNTOURIOTIS, John , D'AMICO, Michele , DANDEKAR, Kapil, R.
发明人： PIAZZA, Daniele , KOUNTOURIOTIS, John , D'AMICO, Michele , DANDEKAR, Kapil, R.
IPC分类号： H04B7/00
CPC分类号： H01Q1/1257 , H01Q3/24 , H01Q9/0407 , H01Q13/10 , H04B7/0434 , H04B7/0689
摘要： A method allows reconfigurable multi-element antennas to select the antenna configuration in MIMO, SIMO and MISO communication system. This selection scheme uses spatial correlation, channel reciprocal condition number, delay spread and average Signal to Noise Ratio (SNR) information to select the antenna radiation pattern at the receiver. Using this approach, it is possible to achieve capacity gains in a multi-element reconfigurable antenna system without modifying the data frame of a conventional wireless communication system. The capacity gain achievable with this configuration selection approach is calculated through numerical simulations using reconfigurable circular patch antennas at the receiver of a MIMO system that employs minimum mean square error receivers for channel estimation. Channel capacity and Bit Error Rate (BER) results show the improvement offered relative to a conventional antenna selection technique for reconfigurable MIMO systems.
摘要翻译：一种方法允许可重配置的多元天线在MIMO，SIMO和MISO通信系统中选择天线配置。该选择方案使用空间相关性，信道倒数条件数，延迟扩展和平均信噪比（SNR）信息来选择接收机处的天线辐射图。使用这种方法，可以在不修改常规无线通信系统的数据帧的情况下实现多元可重构天线系统中的容量增益。使用该配置选择方法可实现的容量增益通过使用在MIMO系统的接收机处使用可重构的圆形贴片天线的数值模拟来计算，该系统使用最小均方误差接收机进行信道估计。信道容量和误码率（BER）结果显示出相对于可重配置MIMO系统的常规天线选择技术的改进。

9. 发明申请

WO2022241306A1 A WEARABLE AND PORTABLE SMART ACTUATION DEVICE FOR DVT RISK MITIGATION: DEEP VEIN THROMBOSIS PREVENTION DEVICE (DVT-PD) 审中-公开
公开(公告)号：WO2022241306A1
公开(公告)日：2022-11-17
申请号：PCT/US2022/029408
申请日：2022-05-16
申请人： DREXEL UNIVERSITY
发明人： EL MGHARI, Hassan , OLSEN, Gregory , LING, Zikang , GANESH, Srivatsa, Rayar , MONGAN, William , PANO, Vasil , DANDEKAR, Kapil, R.
IPC分类号： A61H9/00 , A61H1/00
摘要： A deep vein thrombosis prevention device (DVT-PD) is a wearable device for the lower extremities senses the user's dynamic or static movements and actuates accordingly to lower DVT risks. The device uses a comprehensive control system together with an integrated machine learning model, to classify, manage, direct, and regulate signals and the behavior of the device.

10. 发明申请

WO2013036794A1 RECONFIGURABLE ANTENNA BASED SOLUTIONS FOR DEVICE AUTHENTICATION AND INSTRUSION DETECTION IN WIRELESS NETWORKS 审中-公开
标题翻译：基于天线的可重构基于无线网络中设备认证和探测的解决方案
公开(公告)号：WO2013036794A1
公开(公告)日：2013-03-14
申请号：PCT/US2012/054205
申请日：2012-09-07
申请人： DREXEL UNIVERSITY , PRATHABAN, Mookiah , DANDEKAR, Kapil, R. , WALSH, John, MacLaren , GREENSTADT, Rachel
发明人： PRATHABAN, Mookiah , DANDEKAR, Kapil, R. , WALSH, John, MacLaren , GREENSTADT, Rachel
IPC分类号： H01L35/00
CPC分类号： H04L63/1483 , H04L63/08 , H04L63/1416 , H04W12/06 , H04W12/12
摘要： Channel based authentication schemes for intrusion detection that operates at the physical layer are described that apply the capabilities of a pattern reconfigurable antenna for improved performance. Performance gains are achieved by the schemes as a function of the number of antenna modes. The first scheme relies on a channel based fingerprint for differentiating between transmitters whereas another scheme poses the intruder detection problem as a generalized likelihood ratio (GLR) test problem that operates on the channel realizations corresponding to different modes present in a reconfigurable antenna. The benefits of these two schemes over single element antennas are demonstrated. General guidelines are provided on how to choose the different elements of the decision metric in order to realize better performance for physical layer based authentication schemes based on any diversity scheme.
摘要翻译：描述了在物理层操作的用于入侵检测的基于信道的认证方案，其应用模式可重配置天线的能力以改善性能。通过作为天线模式数量的函数的方案来实现性能增益。第一种方案依赖于基于信道的指纹来区分发射机，而另一种方案将入侵者检测问题作为对存在于可重构天线中的不同模式的信道实现进行操作的广义似然比（GLR）测试问题。证明了这两种方案在单一元件天线上的优点。提供了关于如何选择决策度量的不同元素的一般准则，以便基于任何分集方案实现基于物理层的认证方案的更好的性能。

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