公开(公告)号：US09917635B2

公开(公告)日：2018-03-13

申请号：US14203386

申请日：2014-03-10

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/185

CPC分类号： H04B7/18526 ,  H04B7/18504 ,  H04B7/18578

摘要： Signals of data streams for transmission to user equipment (UE) in spoke-and-hub configurations will utilize multiple transponders of satellites. Radiation patterns from ground terminals with distributed apertures feature orthogonal beams (OB). A tracking OB beam from a moving platform dynamically shall autonomously be formed as a shaped beam by a digital-beam-forming (DBF) network with a peak to a desired satellite, and nulls to undesired satellites to minimize mutual interferences among multiple satellite spatially. Ground hubs and mobile terminals feature “coherent” bandwidth aggregating capability from multiple available but non-contiguous slices of frequency slots in many transponders by wavefront multiplexing/demultiplexing (WF muxing/demuxing) techniques. These individual frequency slots must be dynamically selected, calibrated and equalized continuously in receivers via embedded probing signals as a part of WF muxing/demuxing techniques.

公开(公告)号：US09780859B2

公开(公告)日：2017-10-03

申请号：US14193540

申请日：2014-02-28

申请人： Donald C. D. Chang ,  Juo-Yu Lee

发明人： Donald C. D. Chang ,  Juo-Yu Lee

IPC分类号： H04B7/06 ,  H04L5/00 ,  H04B7/0413 ,  H04B7/0456

CPC分类号： H04B7/0626 ,  H04B7/0413 ,  H04B7/0456 ,  H04L5/0048

摘要： Aircrafts flying near Earth or naval vessels are used as active scattering platforms in a multipath communications channel in MIMO communications systems. These man-made platforms in a communications channel, with techniques of beam forming and wavefront multiplexing in both transmitters at source and receivers at destinations enhance the ability to coherently combine the power of the communication signals, and improve the signal-to-noise ratio in addition to the MIMO advantage of multiple times of channel capacity over a finite bandwidth via frequency reuse. These platforms may be stationary, mobile ground based, or ocean surface based. They may also be airborne, or space borne. A swarm of 10's micro-UAV based mini-transponders is an example through active scattering of these micro-UAV to generate 10× more available bandwidth between a base station and ground mobile users over same bandwidth.

公开(公告)号：US09647347B2

公开(公告)日：2017-05-09

申请号：US13274782

申请日：2011-10-17

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/10 ,  H01Q25/00 ,  H01Q1/22 ,  H01Q1/00 ,  H01Q3/26 ,  H04J13/00

CPC分类号： H01Q25/00 ,  H01Q1/007 ,  H01Q1/2258 ,  H01Q1/2266 ,  H01Q3/2605 ,  H04J13/0003 ,  H04J13/004

摘要： A system is provided that enhances the throughput and reliability of wireless communications by providing multi-beam user terminals that exhibit directional discrimination. Multiple wireless communication channels are matched with multiple beams created from an array antenna by a beam-forming processor. The multiple wireless communication channels are bonded into a single virtual channel, thereby increasing data bandwidth while reducing interference and multi-path effects that can degrade communications. The beam-forming function may be performed in a dedicated beam-forming processor or may reside within a general-purpose microprocessor located in the user terminal. In addition, a wireless communications system with access points featuring multiple beams that exhibit directional discrimination that can concurrently support multiple users with multi-beam terminals via a common frequency channel. Both forward and return links feature multiple-folded frequency reuse, enabling multiple users with higher throughput and improved reliability. The spectrum utility of the communications system has been enhanced with multiple folds.

公开(公告)号：US09166673B2

公开(公告)日：2015-10-20

申请号：US14010546

申请日：2013-08-27

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/185 ,  H04B7/04 ,  H04B7/204 ,  H04L25/03

CPC分类号： H04B7/18515 ,  H04B7/0413 ,  H04B7/18517 ,  H04B7/18523 ,  H04B7/2041 ,  H04J14/00 ,  H04J14/005 ,  H04J14/08 ,  H04L25/03006

摘要： A direct broadcasting satellite (DBS) system features a capability of coherently combining amplified signals powers from various broadcasting transponders without modifying the satellite segment. Organized DBS transponders would function as an equivalent DBS transponder with a higher EIRP. Power allocations are via a mechanism in an uplink transmitter in a ground segment and power combining mechanisms are in user receivers in a user segment. Specifically, the transmitter generates mixtures of input signals by using Wavefront-Multiplexing and transmits wavefront-multiplexed (WFM) signals which are sent concurrently through multiple parallel channels of transponders in the satellite segment. A receiver in the user segment separates the mixtures of received amplified WFM signals and coherently combines amplified components by various transponders by adaptive equalizing and Wavefront De-Multiplexing processors. The WFM signal mixtures allow an operator, or automated system, at the transmitter to dynamically allocate the equivalent transponder powers according to continuously changing demands.

摘要翻译： 直播卫星（DBS）系统具有将来自各种广播转发器的放大信号功率相干组合的能力，而不改变卫星段。 有组织的DBS转发器将作为具有较高EIRP的等效DBS转发器。 功率分配通过地面段中的上行链路发射机中的机制，并且功率合并机制在用户分段中的用户接收机中。 具体地，发射机通过使用波前复用来产生输入信号的混合，并发送通过卫星段中的多个并发信道的并行信道同时发送的波前复用（WFM）信号。 用户区段中的接收机将接收到的放大的WFM信号的混合分离，并通过自适应均衡和波前解复用处理器将各种应答器相干组合放大的分量。 WFM信号混合允许发射机上的操作员或自动化系统根据不断变化的需求动态分配等效的应答器功率。

公开(公告)号：US09100085B2

公开(公告)日：2015-08-04

申请号：US13281261

申请日：2011-10-25

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B10/50 ,  H04B10/60 ,  H04B7/185 ,  G01S13/93 ,  H04L25/03 ,  H04B7/204 ,  B64C39/02 ,  G01S7/00

CPC分类号： H04B7/18502 ,  B64C39/02 ,  G01S7/006 ,  G01S13/9303 ,  H04B7/18504 ,  H04B7/2041 ,  H04B10/2581 ,  H04J14/02 ,  H04L25/03891

摘要： A system is provided for high speed optical fiber data transmission by generating artificial wavefronts along multiple paths exhibiting spatial mutual orthogonality. Multiple independent signal streams are “structured” over a group of different propagation paths that are coherently organized by wavefront multiplexing and de-multiplexing techniques. Therefore, signal streams with enhanced throughput and reliability may be fully recovered at destinations via embedded diagnostic signals and optimization loops. Multiple optical channels are matched with multiple orthogonal wavefronts created by a signal pre-processor. A receiving end signal post-processor dynamically aligns propagation paths via diagnostic signals and orthogonality of the propagation wavefronts electronically. The multiple optical channels are coherently bonded into a single virtual channel, thereby increasing data bandwidth while reducing interference and unwanted multi-path effects. The wavefront multiplexing and de-multiplexing functions may be performed in a dedicated signal processor or may reside in a general-purpose microprocessor located in the user terminal.

摘要翻译： 通过沿着显示空间相互正交性的多个路径产生人造波前，提供用于高速光纤数据传输的系统。 多个独立信号流通过波阵面复用和解复用技术相干组织的一组不同传播路径“结构化”。 因此，具有增强的吞吐量和可靠性的信号流可以通过嵌入式诊断信号和优化环路在目的地完全恢复。 多个光通道与由信号预处理器创建的多个正交波前匹配。 接收端信号后处理器通过诊断信号和传播波前的电子方式的正交性动态对齐传播路径。 多个光信道被相干地结合到单个虚拟信道中，从而增加数据带宽，同时减少干扰和不期望的多径效应。 波前复用和解复用功能可以在专用信号处理器中执行，或者可以驻留在位于用户终端中的通用微处理器中。

公开(公告)号：US08817694B2

公开(公告)日：2014-08-26

申请号：US13291594

申请日：2011-11-08

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04L12/28 ,  H04N7/20 ,  H04B7/204 ,  H04J1/16

CPC分类号： H04L27/265 ,  H04B7/1851 ,  H04B7/2041 ,  H04N7/20 ,  H04W16/14

摘要： A satellite broadcasting system is achieved where remote beam forming processors combined with wavefront multiplexers located among distributed ground stations are used to control downlink beam footprints and pointing directions. Digital beam forming (DBF) techniques allow a single satellite download broadcast antenna array to generate multiple independently pointed simultaneous downlinks, which may contain distinct information content. Allocation of some uplink back-channel elements as diagnostic signals allows for continuous calibration of uplink channels, improving downlink broadcast array and user broadcast performance. Wavefront multiplexing/demultiplexing allows all array element signals to be radiated by the broadcasting antenna array, with simultaneous propagation from ground stations to the broadcasting satellites through available parallel propagation channels in the uplinks of feeder links, with equalized amplitude and phase differentials. Further, additional wavefront multiplexing/demultiplexing pairs are further used to coherently broadcast signals from a remote beam forming facility on ground to cover areas through multiple broadcasting satellites.

摘要翻译： 实现了一种卫星广播系统，其中使用与分布式地面站中的波前多路复用器组合的远程波束形成处理器来控制下行链路波束覆盖和指向方向。 数字波束形成（DBF）技术允许单个卫星下载广播天线阵列生成多个独立指向的同时下行链路，其可以包含不同的信息内容。 将一些上行链路后向信道元素分配为诊断信号允许上行链路信道的连续校准，改善下行链路广播阵列和用户广播性能。 波前多路复用/解复用允许所有阵列元件信号由广播天线阵列辐射，同时通过馈线链路的上行链路中的可用并行传播信道同时从地面站传播到广播卫星，具有均衡的幅度和相位差。 此外，另外的波前复用/解复用对还被用于将来自远程波束形成设备的信号在地面上相干地广播以通过多个广播卫星覆盖区域。

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：US08767615B2

公开(公告)日：2014-07-01

申请号：US13623882

申请日：2012-09-21

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H04B7/185

CPC分类号： H04B7/18502 ,  B64C39/02 ,  G01S7/006 ,  G01S13/9303 ,  H04B7/18504 ,  H04B7/2041 ,  H04B10/2581 ,  H04J14/02 ,  H04L25/03891

摘要： Aircrafts or unmanned air vehicles flying near Earth are used as airborne communications towers or relays. Using techniques of ground based beam forming and wavefront multiplexing enhance the ability to coherently combine the power of the communication signals, and improve the signal-to-noise ratio.

摘要翻译： 飞机附近的飞机或无人驾驶飞机被用作机载通信塔或继电器。 使用基于地面的波束形成和波前多路复用的技术增强了将通信信号的功率相干组合的能力，并提高了信噪比。

公开(公告)号：US08570103B2

公开(公告)日：2013-10-29

申请号：US13180826

申请日：2011-07-12

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H03F3/68

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.

摘要翻译： 本发明旨在提出具有功率组合和功率共享功能的智能和动态功率放大器模块。 所提出的灵活功率放大器（PA）模块由预处理器，N PA和后处理器组成。 预处理器是M到N波前（WF）多路复用器（muxer），而后处理器是N到M WF去多路复用器（demuxer），其中N> = M> = 2。 多个独立信号可以由具有固定总功率输出的所提出的多通道PA模块同时放大，而单独的信号通道输出具有不同的功率强度，在各个信号之间没有信号耦合。 除基本配置外，一些模块可配置为兼容并行功率放大器的功能以及M-to-M开关。 其他可编程功能包括具有规定幅度和相位分布的功率组合和功率再分配功能的配置，以及具有线性化器的高功率PA。

公开(公告)号：US20120319772A1

公开(公告)日：2012-12-20

申请号：US13180826

申请日：2011-07-12

申请人： Donald C. D. Chang

发明人： Donald C. D. Chang

IPC分类号： H03F3/68

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.

摘要翻译： 本发明旨在提出具有功率组合和功率共享功能的智能和动态功率放大器模块。 所提出的灵活功率放大器（PA）模块由预处理器，N PA和后处理器组成。 预处理器是M到N波前（WF）多路复用器（muxer），而后处理器是N到M WF去多路复用器（解复用器），其中N≥M≥2。 多个独立信号可以由具有固定总功率输出的所提出的多通道PA模块同时放大，而单独的信号通道输出具有不同的功率强度，在各个信号之间没有信号耦合。 除基本配置外，一些模块可配置为兼容并行功率放大器的功能以及M-to-M开关。 其他可编程功能包括具有规定幅度和相位分布的功率组合和功率再分配功能的配置，以及具有线性化器的高功率PA。