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1. 发明申请

US20170222326A1 SLOTTED SLOT ANTENNA 审中-公开
公开(公告)号：US20170222326A1
公开(公告)日：2017-08-03
申请号：US15327593
申请日：2014-11-03
申请人： Jim WIGHT , Peter FRANK , Roland SMITH , Mike SKOF , Telefonaktiebolaget LM Ericsson (publ)
发明人： Jim WIGHT , Peter FRANK , Mike SKOF , Roland SMITH
IPC分类号： H01Q13/16 , H01Q9/04
摘要： A slot antenna comprising a conductor, a principal slot, a feed point and one or more side slots is provided. The conductor has an axis defining a first conductor side and a second conductor side. The principal slot extends longitudinally within the conductor along the axis. The feed point comprises a first coupling point and a second coupling point respectively located on the first and second conductor sides. The one or more side slots extend from the principal slot. The slot antenna has a reduced physical length compared to the length of a typical slot antenna at the same frequency of operation. Electronic device comprising a ground plane and one or more slot antenna is provided. The one or more slot antennas are mounted on the ground plane.

2. 发明申请

US20110109442A1 Passive RFID tag reader/locator 审中-公开
标题翻译：被动RFID标签阅读器/定位器
公开(公告)号：US20110109442A1
公开(公告)日：2011-05-12
申请号：US12591208
申请日：2009-11-12
申请人： George Pavlov , Jim Wight , Ying Shao , Sanjay Chadha
发明人： George Pavlov , Jim Wight , Ying Shao , Sanjay Chadha
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008
摘要： Systems and methods for use in reading and locating passive RFID tags. A reader/locator system sends out a signal with varying frequency. A tag reflects the signal back and the receiver portion of the reader/locator system receives the signal after a certain propagation delay. Since during this propagation delay the transmit frequency has changed, the received signal frequency differs from the one is currently transmitted. The received signal gets mixed with the currently transmitted signal and the resulting beat frequency depends on the frequency variation pattern (which is known) and the signal propagation delay. This beat frequency is directly proportional to the distance between the reader/locator and the RFID tag. The beat frequency can therefore be used to estimate this distance between the reader/locator and the RFID tag. Also provided are methods for determining if an incoming signal is data bearing and a method to obtain a cleaner incoming signal by storing a “carbon footprint” or background clutter and subtracting the carbon footprint from the incoming signal. A novel type of passive RFID tag is also disclosed.
摘要翻译：用于读取和定位无源RFID标签的系统和方法。读取器/定位器系统发送具有不同频率的信号。标签反映信号，读取器/定位器系统的接收器部分在一定的传播延迟之后接收信号。由于在该传播延迟期间，发射频率已经改变，所以接收信号频率与当前传输的频率不同。所接收的信号与当前发送的信号混合，并且所得到的拍频取决于频率变化模式（已知的）和信号传播延迟。该拍频与读写器与RFID标签之间的距离成正比。因此，拍频可用于估计读/定位器与RFID标签之间的距离。还提供了用于确定输入信号是否是数据承载的方法以及通过存储“碳足迹”或背景杂波并从输入信号中减去碳足迹来获得更干净的输入信号的方法。还公开了一种新型的无源RFID标签。

3. 发明申请

US20080130765A1 Method and Apparatus for Multiple Input Multiple Output Wireless 审中-公开
公开(公告)号：US20080130765A1
公开(公告)日：2008-06-05
申请号：US11566745
申请日：2006-12-05
申请人： Jim Wight
发明人： Jim Wight
IPC分类号： H04L27/28
CPC分类号： H04B7/0434 , H04L25/0204
摘要： A method and system for communicating multiple input multiple output (MIMO) wireless data comprising inputs for a plurality of signals Si, a network for weighting each of a plurality of signals Si for each of a plurality of transmit antennas and combining signals weighted for each of the plurality of antennas, a plurality of antennas for transmitting the plurality of combined signals, a plurality of antennas for receiving a plurality of signals on a plurality of receive antennas, a receiver for recovering a second plurality of signals So by deriving receiver weightings for each of the plurality of received signals in dependence upon the respective transmitter weightings by factoring a matrix H representative of a channel between the plurality of transmit and receive antennas. The receiver includes means for factoring the channel matrix H into two matrices, the second of which is a first unitary matrix, means for decomposing the first unitary matrix to provide an upper triangular matrix whose principal diagonal comprises eigenvalues of the first unitary matrix and a second unitary matrix and means for factoring in parallel rows of the upper triangular matrix to isolate eigenvalues λj ans Soj=λjSij. Factoring the channel matrix H includes a LQ decomposition: H=LQ1 where L is a lower triangular matrix and Q1 is a Unitary matrix. Decomposing the first unitary matrix Q1 includes a Schur decomposition Q1=Q2*UQ2−1 where U is an upper triangular matrix with the principal diagonal being the eigenvalues of Q1 and Q2 is the second Unitary Matrix. Factoring in parallel includes factoring U as U=MjTj where Tj is a matrix formed by transposing the elements to the right of the principal diagonal of the jth row of the upper triangular matrix, into the elements below the principal diagonal of the jth column, while leaving all other rows untouched.

4. 发明授权

US5912645A Array feed for axially symmetric and offset reflectors 失效
标题翻译：用于轴对称和偏移反射器的阵列进给
公开(公告)号：US5912645A
公开(公告)日：1999-06-15
申请号：US820829
申请日：1997-03-19
申请人： Jim Wight , David J. Roscoe
发明人： Jim Wight , David J. Roscoe
IPC分类号： H01Q19/17 , H01Q21/22 , H01Q25/00 , H01Q3/02 , H01Q19/12
CPC分类号： H01Q19/17 , H01Q21/22 , H01Q25/007
摘要： In the past, parabolic offset reflector antennas were fed a signal through a corrugated horn in order to optimize field distribution and polarization at the reflector. It has been found that cost savings and other advantages are realized by using an array of radiating patches. The geometrical placement of the radiating patches and the power distribution to each patch is arranged such that radiated energy from the patches sums at the reflector surface to produce the predetermined field distribution and polarization.
摘要翻译：在过去，抛物面偏移反射器天线通过波纹喇叭馈送信号，以优化反射器的场分布和极化。已经发现，通过使用辐射贴片阵列来实现成本节省和其它优点。辐射片的几何布置和每个贴片的功率分布被布置成使得来自贴片的辐射能量在反射器表面处相加以产生预定的场分布和极化。

5. 发明申请

US20080225985A1 Method and Apparatus for Enhancing GSM System Capacity 审中-公开
标题翻译：提高GSM系统容量的方法和装置
公开(公告)号：US20080225985A1
公开(公告)日：2008-09-18
申请号：US11685341
申请日：2007-03-13
申请人： Shiquan (Robert) Wu , Jim Wight , Shiwei Gao
发明人： Shiquan (Robert) Wu , Jim Wight , Shiwei Gao
IPC分类号： H04L27/12
CPC分类号： H04L27/0008 , H04L1/0071 , H04L5/12 , H04L27/18 , H04L27/2017 , H04L27/2601
摘要： There is provided a system and method of enhancing capacity of a wireless communication channel compromising the steps of modulating data in accordance with first modulation scheme transforming the modulated data from a frequency domain symbol to a time domain version and encoding bits in a wireless communication timeslot independence upon the time domain version whereby capacity of the wireless communication channel is enhanced. The system and method further comprises the steps of: means for receiving the timeslot means for decoding the timeslot and means for transforming the decoded bits from time domain to frequency domain to recover the data. GSM capacity is enhanced between two and six times.
摘要翻译：提供了一种增强无线通信信道的容量的系统和方法，该无线通信信道损害了根据调制数据从频域符号变换为时域版本的第一调制方案和在无线通信时隙独立编码比特的数据的步骤在时域版本上，从而增强了无线通信信道的容量。该系统和方法还包括以下步骤：接收用于解码时隙的时隙装置的装置和用于将解码的比特从时域变换到频域的装置，以恢复数据。 GSM容量增加了两到六倍。

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