公开(公告)号：US08384572B2

公开(公告)日：2013-02-26

申请号：US12985044

申请日：2011-01-05

申请人： Tzer-Hso Lin ,  Yuanchang Liu ,  Donald C. D. Chang

发明人： Tzer-Hso Lin ,  Yuanchang Liu ,  Donald C. D. Chang

IPC分类号： H03M1/20

CPC分类号： H03M1/002 ,  H03M1/0641 ,  H03M1/08 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/1215 ,  H03M1/188 ,  H03M1/20 ,  H04B1/0475 ,  H04B1/123 ,  H04B7/10 ,  H04L27/06

摘要： A novel noise injection technique is presented to improve dynamic range with low resolution and low speed analog to digital converters. This technique combines incoming signal and noise signal with wave front de-multiplexer and split into several channels. Then low resolution and low speed analog to digital converters are used to sample each channels. All signals are recovered using wave front multiplexer. For advanced design, ground diagnostic signals with optimizing processor can be added to guarantee recovery quality.

摘要翻译： 提出了一种新颖的噪声注入技术，通过低分辨率和低速模数转换器来改善动态范围。 该技术将输入信号和噪声信号与波前解复用器相结合，并分为多个通道。 然后使用低分辨率和低速模数转换器对每个通道进行采样。 所有信号使用波前复用器进行恢复。 对于先进的设计，可以添加具有优化处理器的接地诊断信号，以保证恢复质量。

公开(公告)号：US09692549B2

公开(公告)日：2017-06-27

申请号：US14728980

申请日：2015-06-02

申请人： Juo-Yu Lee ,  Donald C. D. Chang ,  Tzer-Hso Lin

发明人： Juo-Yu Lee ,  Donald C. D. Chang ,  Tzer-Hso Lin

IPC分类号： H04J14/06 ,  H01Q21/24 ,  H04B7/185

CPC分类号： H04J14/06 ,  H01Q21/245 ,  H04B7/18504 ,  H04B7/18513

摘要： Presented are methods that utilize wavefront multiplexing for enabling linearly-polarized terminals to access circularly-polarized satellite transponders. The methods disclosed herein feature (1) polarization formation capability that renders transmitted signal conditioned on circularly-polarized channels through multiple linearly-polarized feeds, and (2) polarization-conversion capability that compensate path differentials introduced by electromagnetic wave propagation channels. Data streams to be transmitted are pre-processed by a wavefront multiplexer into multiple wavefront components in linear polarization formats, where signals from respective data streams are replicated into linearly-polarized sub-channels. These replicated data streams are linked via a unique complex weighting vector (amplitude and phase or their equivalents), or “wavefront”, which are also linked by various spatially independent wavefronts. Additionally, a probing signal is sent on the transmitting side and linked via some of the independent wavefronts. Aggregated signals in linearly-polarized sub-channels are unique linear combinations of all input data streams. Aggregated signals in turn appear in circularly-polarized formats and propagate through circularly-polarized channels including circularly-polarized satellite transponders and a circularly-polarized teleport on the receiving side. Correlation between the circularly-polarized signal and the probing signal is sent back to the transmitting side that drives the polarization-conversion function toward the optimal state such that this correlation is lower than a pre-defined level. Accordingly, an optimally configured satellite communication system either (1) enables the linearly-polarized terminal on the transmitting side to access right-hand circularly-polarized satellite transponder without interfering the left-hand circularly-polarized satellite transponder, or (2) enables the linearly-polarized terminal on the transmitting side to access left-hand circularly-polarized satellite transponder without interfering the right-hand circularly-polarized satellite transponder.

公开(公告)号：US20120064759A1

公开(公告)日：2012-03-15

申请号：US12952056

申请日：2010-11-22

申请人： Yuanchang Liu ,  Donald C. D. Chang ,  Derrick Chu

发明人： Yuanchang Liu ,  Donald C. D. Chang ,  Derrick Chu

IPC分类号： H01R13/72

CPC分类号： H03M1/002 ,  H03M1/0641 ,  H03M1/08 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/1215 ,  H03M1/188 ,  H03M1/20 ,  H04B1/0475 ,  H04B1/123 ,  H04B7/10 ,  H04L27/06 ,  H05K999/99

摘要： A retractable mobile device power module comprises of a plug to power outlet, a retractable power cord, an adapter, and a retractor. With this design, power supply for mobile devices can be compact and low profile. Besides providing power, this design can be used for data transmission as well.

摘要翻译： 可伸缩移动设备电源模块包括插头到电源插座，可伸缩电源线，适配器和牵开器。 通过这种设计，移动设备的电源可以紧凑和低调。 除了提供电源，这种设计也可以用于数据传输。

公开(公告)号：US08773307B2

公开(公告)日：2014-07-08

申请号：US12952029

申请日：2010-11-22

申请人： Donald C. D. Chang ,  Yulan Sun ,  Yuanchang Liu

发明人： Donald C. D. Chang ,  Yulan Sun ,  Yuanchang Liu

IPC分类号： G01S3/16 ,  H01Q3/00

CPC分类号： H03M1/002 ,  H03M1/0641 ,  H03M1/08 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/1215 ,  H03M1/188 ,  H03M1/20 ,  H04B1/0475 ,  H04B1/123 ,  H04B7/10 ,  H04L27/06

摘要： A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.

摘要翻译： 通过采用天线阵列来接收和发送通过扰动程序计算的复零零权重向量的信号，新的宽零空位形成系统实现宽带宽和波束宽度零。 新的宽零位成形系统包括用于接收或发送信号的多元件天线阵列。 存在与元件数量相匹配的多个调节单元来调节信号以进行适当的接收和分析，之后一系列复杂乘法器处理器增加了复杂的权重。 在加权之后，每个组成光束在加法处理器中组合以形成用户使用的一个组合光束。

公开(公告)号：US20120063542A1

公开(公告)日：2012-03-15

申请号：US12952029

申请日：2010-11-22

申请人： Yuanchang Liu ,  Yulan Sun ,  Donald C. D. Chang

发明人： Yuanchang Liu ,  Yulan Sun ,  Donald C. D. Chang

IPC分类号： H04L25/03 ,  H04L27/08 ,  H04B1/10 ,  H04B7/10

CPC分类号： H03M1/002 ,  H03M1/0641 ,  H03M1/08 ,  H03M1/12 ,  H03M1/1205 ,  H03M1/1215 ,  H03M1/188 ,  H03M1/20 ,  H04B1/0475 ,  H04B1/123 ,  H04B7/10 ,  H04L27/06

摘要： A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.

摘要翻译： 通过采用天线阵列来接收和发送通过扰动程序计算的复零零权重向量的信号，新的宽零空位形成系统实现宽带宽和波束宽度零。 新的宽零位成形系统包括用于接收或发送信号的多元件天线阵列。 存在与元件数量相匹配的多个调节单元来调节信号以进行适当的接收和分析，之后一系列复杂乘法器处理器增加了复杂的权重。 在加权之后，每个组成光束在加法处理器中组合以形成用户使用的一个组合光束。

公开(公告)号：US08643562B2

公开(公告)日：2014-02-04

申请号：US12847941

申请日：2010-07-30

申请人： Donald C. D. Chang ,  Yuanchang Liu

发明人： Donald C. D. Chang ,  Yuanchang Liu

IPC分类号： H01Q21/08 ,  H01Q1/38

CPC分类号： H01Q21/065 ,  H01Q1/243 ,  H01Q21/0075 ,  H01Q21/20

摘要： A compact patch antenna array for mobile terminal applications comprising: a plurality of radiators mounted on one surface of a dielectric, with a ground plane being mounted on the other side of the dielectric. Beneath the ground plane, another dielectric with feeding network is placed. Other embodiments are described and shown in FIG. 2.

摘要翻译： 一种用于移动终端应用的紧凑型贴片天线阵列，包括：安装在电介质的一个表面上的多个散热器，其中接地平面安装在电介质的另一侧上。 在地平面下方放置另一个带馈电网络的电介质。 在图1中描述和示出了其它实施例。 2。

公开(公告)号：US09762309B2

公开(公告)日：2017-09-12

申请号：US14038813

申请日：2013-09-27

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/185 ,  H03F1/02 ,  H03F1/32 ,  H03F3/21 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72

CPC分类号： H04B7/18515 ,  H03F1/0277 ,  H03F1/3247 ,  H03F1/3258 ,  H03F3/211 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72 ,  H03F2201/3212 ,  H03F2203/21106 ,  H03F2203/21109 ,  H03F2203/21136 ,  H03F2203/21145 ,  H03F2203/21175 ,  H03F2203/7215 ,  H03F2203/7224 ,  H03F2203/7236

摘要： This invention aims to present a smart and dynamic power amplifier module that features both power combining and power sharing capabilities. The proposed flexible power amplifier (PA) module consists of a pre-processor, N PAs, and a post-processor. The pre-processor is an M-to-N wavefront (WF) multiplexer (muxer), while the post processor is a N-to-M WF de-multiplexer (demuxer), where N≧M≧2. Multiple independent signals can be concurrently amplified by a proposed multi-channel PA module with a fixed total power output, while individual signal channel outputs feature different power intensities with no signal couplings among the individual signals. In addition to basic configurations, some modules can be configured to feature both functions of parallel power amplifiers and also as M-to-M switches. Other programmable features include configurations of power combining and power redistribution functions with a prescribed amplitude and phase distributions, as well as high power PA with a linearizer.

公开(公告)号：US09628250B2

公开(公告)日：2017-04-18

申请号：US13071388

申请日：2011-03-24

申请人： Donald C. D. Chang ,  Frank Lu ,  Yulan Sun

发明人： Donald C. D. Chang ,  Frank Lu ,  Yulan Sun

IPC分类号： H04L5/16 ,  H04L5/04

CPC分类号： H04L5/04

摘要： An advanced digital beam forming technique is achieved that is capable of simultaneously forming multiple beams and attenuating the cross-pol component at multiple locations. The proposed invention, comprising a series of signal inputs, optimization loops and weighting processes, successfully eliminates the side effect of an increase of the cross-pol in the process of beam-forming, thus reducing potential interference. This technique utilizes the orthogonally polarized signal component which is already available and can minimize both the horizontally polarized and vertically polarized cross-pol at the same time. The complexity of computation can be reduced by using only part of the orthogonal polarized components in the optimization.

公开(公告)号：US09621254B2

公开(公告)日：2017-04-11

申请号：US13778175

申请日：2013-02-27

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/185 ,  H04B1/04

CPC分类号： H04B7/18504 ,  H04B1/0483 ,  H04B7/18506 ,  H04B7/18513 ,  H04W4/90 ,  H04W72/0453 ,  H04W84/12

摘要： A communication system includes a transmitter segment at a source location inputting a plurality of input signals to be transmitted. The input signals are transformed to wavefront multiplexed signals (WFM signals), and the WFM signals are modulated into WFM waveforms. The WFM waveforms are transmitted through a segment of propagation to a receiver segment; wherein the segment of propagation includes a plurality of UAV based transmission channels among the WFM waveforms; wherein the WFM waveforms are transmitted over the transmission channels; wherein the receiver segment receives the WFM waveforms from the transmission channels. Demodulation is performed on the received WFM waveforms to convert the received WFM waveforms to received WFM signals individually. A wavefront de-multiplexing transform is performed on the received WFM signals to recover individual desired signals.

公开(公告)号：US09479243B2

公开(公告)日：2016-10-25

申请号：US13236418

申请日：2011-09-19

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/08 ,  H01Q1/24 ,  H01Q3/24 ,  H01Q3/26 ,  H01Q21/20

CPC分类号： H01Q1/243 ,  H01Q1/242 ,  H01Q3/24 ,  H01Q3/2605 ,  H01Q21/00 ,  H01Q21/20 ,  H04B7/086

摘要： The present invention features novel methods of implementing configurable arrays for personal portable devices including hand-held mobile devices and re-locatable wireless devices, utilizing a wireless communications system that employs multiple individual hubs and/or base-stations. The digital beam forming (DBF) methodology utilizes multiple low gain elements conformal to the mechanical contours of handheld devices to function as arrays. The distributed N element arrays dynamically provide the options of reconfigurable shaped beams with near hemispheric radiation patterns for various handheld orientations and conditions by various users, while also supporting operations of multiple orthogonal beams concurrently connecting to multiple hubs. The larger the N becomes, the more flexibility the residing devices can provide.

摘要翻译： 本发明的特征在于，利用使用多个单独的集线器和/或基站的无线通信系统来实现用于个人便携式设备的可配置阵列的新颖方法，包括手持移动设备和可重新定位的无线设备。 数字波束形成（DBF）方法利用符合手持设备的机械轮廓的多个低增益元件作为阵列。 分布式N元素阵列动态地提供具有近半球辐射图的可重构形状波束的选项，用于各种用户的各种手持方向和条件，同时还支持同时连接到多个中心的多个正交波束的操作。 N越大，驻留设备可以提供的灵活性就越大。