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公开(公告)号：US07558541B2
公开(公告)日：2009-07-07
申请号：US11001978
申请日：2004-12-01
申请人： Harold A. Rosen , James D. Thompson
发明人： Harold A. Rosen , James D. Thompson
IPC分类号： H01Q11/12
CPC分类号： H04B7/18515 , H03F1/0205 , H03F1/32 , H03F1/3282 , H03F3/211 , H03F3/24 , H03F3/602 , H03F3/604
摘要： Methods and apparatus are provided for stabilizing the phase and gain of an amplifier in a power pooling arrangement. A pilot signal combining a reference carrier frequency with a reference sideband frequency is passed through the amplifier via an adjustable phase shifter and an adjustable attenuator in the amplifier input line. A portion of the amplified pilot signal is coupled from the output of the amplifier and mixed with the reference frequency. The remaining audio frequency signal is compared to a reference (input) audio signal to determine phase and gain changes during amplification in the amplifier. Phase and gain control signals are developed from this comparison, and are fed back to the adjustable phase shifter and adjustable attenuator, respectively, in order to compensate an incoming signal for phase and gain variations in the amplifier.
摘要翻译： 提供了用于稳定功率集成装置中的放大器的相位和增益的方法和装置。 将参考载波频率与参考边带频率组合的导频信号通过放大器中的可调移相器和可调衰减器在放大器输入线中传递。 放大的导频信号的一部分从放大器的输出端耦合，并与参考频率混频。 将剩余音频信号与参考（输入）音频信号进行比较，以确定放大器放大期间的相位和增益变化。 相位和增益控制信号从该比较开发，并分别反馈给可调移相器和可调衰减器，以补偿输入信号中放大器的相位和增益变化。
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公开(公告)号：US4752925A
公开(公告)日：1988-06-21
申请号：US670085
申请日：1984-11-13
CPC分类号： H04B7/18521
摘要： A two-hop communications system utilizing two collocated spacecraft (Se and Sw) and two remote intersatellite exchange (RISE) means (Re and Rw) provides for communications between ground stations located in two or more defined subregions. Each satellite includes wide band transponders for relaying ground station transmissions to the RISEs. The RISEs convert first hop frequency division multiplexed (FDM) signals to time division multiplexed (TDM) for the second hop. Signals are coded by frequency, polarization and direction so as to avoid loss of bandwidth due to the two-hop approach.
摘要翻译： 利用两个并置的航天器（Se和Sw）和两个远程卫星间交换（RISE）装置（Re和Rw）的两跳通信系统提供位于两个或更多个确定的次区域内的地面站之间的通信。 每个卫星包括用于将地面站传输中继到RISE的宽带应答器。 RISE将第一跳频分复用（FDM）信号转换为第二跳的时分复用（TDM）。 信号由频率，极化和方向编码，以避免由于双跳方式而导致的带宽损失。
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公开(公告)号：US06421528B1
公开(公告)日：2002-07-16
申请号：US09301967
申请日：1999-04-29
申请人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
发明人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
IPC分类号： H04J1302
CPC分类号： H04B7/18513 , H04B7/2041 , Y02D70/446
摘要： A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.
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公开(公告)号：US4989011A
公开(公告)日：1991-01-29
申请号：US111909
申请日：1987-10-23
申请人： Harold A. Rosen , James D. Thompson
发明人： Harold A. Rosen , James D. Thompson
摘要： A phased array antenna system (20; 120) having an array (22; 122) of radiating elements (24-30; H1-H32), such as pyramidal horns, and a distribution network (32; 124) connected thereto, has a dual mode of operation where each mode produces a composite beam which can and preferably does produce an identical far-field electromagnetic radiation pattern. The first composite beam is made up of a plurality of individual beams, forming a linear combination of excitation coefficients (a.sub.1 -a.sub.4) that are mathematically orthogonal to the linear combination of excitation coefficients (b.sub.1 -b.sub.4) of the individual beams of the other composite beam. A plurality of input ports (42-44; 176-178) are provided, and each composite beam is associated with an information-bearing input signal applied to one of the input ports. The distribution network (32; 124) is preferably constructed with at least two stages of signal-dividing devices (52-58; 222-228, 270-282) such as directional couplers and at least a pair of phase-shifting devices (60-62; 230-232, 284-296). By using passive devices, the distribution network (32; 124) is substantially lossless and reciprocal, and can thus also be used for dual mode reception of two distinct beams.
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公开(公告)号：US4858229A
公开(公告)日：1989-08-15
申请号：US896559
申请日：1986-08-14
申请人： Harold A. Rosen , James D. Thompson
发明人： Harold A. Rosen , James D. Thompson
CPC分类号： H04B7/18515
摘要： A satellite communications system employs separate subsystems for providing broadcast and point-to-point two-way communications using the same assigned frequency band. The broadcast and point-to-point subsystems employ an integrated satellite antenna system which uses a common reflector (12). The point-to-point subsystem achieves increased communication capacity through the reuse of the assigned frequency band over multiple, contiguous zones (32, 34, 36, 38) covering the area of the earth to be serviced. Small aperture terminals in the zones are serviced by a plurality of high gain downlink fan beams (29) steered in the east-west direction by frequency address. A special beam-forming network (98) provides in conjunction with an array antenna (20) the multiple zone frequency address function. The satellite (10) employs a filter interconnection matrix (90) for connecting earth terminals in different zones in a manner which permits multiple reuse of the entire band of assigned frequencies. A single pool of solid state transmitters allows rain disadvantaged users to be assigned higher than normal power at minimum cost. The intermodulation products of the transmitters are geographically dispersed.
摘要翻译： 卫星通信系统采用单独的子系统，用于使用相同的分配频带提供广播和点对点双向通信。 广播和点对点子系统采用使用公共反射器（12）的集成卫星天线系统。 点对点子系统通过在覆盖要被维护的地球区域的多个连续区域（32,34,36,38）上重新使用分配的频带来实现增加的通信容量。 区域中的小孔径终端由多个通过频率地址在东西方向转向的高增益下行风扇波束（29）提供服务。 特殊的波束形成网络（98）结合阵列天线（20）提供多频带地址功能。 卫星（10）采用滤波器互连矩阵（90），用于以允许分配频率的整个频带的多重重用的方式在不同区域中连接接地端子。 一个单一的固态发射器池允许雨水处于不利地位的用户以最低的成本分配高于正常功率。 发射机的互调产物在地理上分散。
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6.发明授权公开(公告)号：US06799014B2
公开(公告)日：2004-09-28
申请号：US10068543
申请日：2002-02-06
申请人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
发明人： Harold A. Rosen , Todd K. Citron , Steven O. Lane , James D. Thompson , Arnold L. Berman , Robert E. Vaughan
IPC分类号： H04B7185
CPC分类号： H04B7/18513 , H04B7/2041 , Y02D70/446
摘要： A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization. The present invention allows for the reduction of RF transmit power to achieve the same communications performance enabling either increases in satellite functionality and/or an increase in total capacity of the satellite communication system.
摘要翻译： 用于调整发送到卫星覆盖区域内的局部区域的信号的卫星通信信号发射功率的系统和方法利用局部区域内的天气条件（172）和/或实际路径损耗（174）的实时信息来调整 卫星射束（188）的有效各向同性辐射功率（EIRP），以最小化传输所需的总射频（RF）功率。 可以使用用于发射点波束和/或区域覆盖波束的各种天线类型来实现传输系统。 代表性的天线实现包括具有低级波束成形网络和混合矩阵放大器系统的多波束天线，具有独立输入幅度控制的相控阵列和用于每个波束的波束导引，以及相控阵列，其馈送单个广播波束的共焦成像系统 极化。 本发明允许降低RF发射功率以实现相同的通信性能，从而能够增加卫星功能和/或增加卫星通信系统的总容量。
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7.发明授权Method and reagent for treatment of diseases by expression of the c-Myc gene 失效通过c-Myc基因表达治疗疾病的方法和试剂公开(公告)号：US06544755B1
公开(公告)日：2003-04-08
申请号：US08192943
申请日：1994-02-07
IPC分类号： C07H2104
CPC分类号： C12N15/113 , C12N15/1135 , C12N2310/121 , C12N2310/122 , C12N2310/123 , C12N2310/124 , C12N2310/126
摘要： An enzymatic RNA molecule which cleaves mRNA associated with development or maintenance of Burkitt's lymphoma or acute lymphocytic leukemia.
摘要翻译： 一种酶切RNA分子，其切割与发展或维持伯基特氏淋巴瘤或急性淋巴细胞性白血病相关的mRNA。
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公开(公告)号：US5012254A
公开(公告)日：1991-04-30
申请号：US411810
申请日：1989-09-25
申请人： James D. Thompson
发明人： James D. Thompson
CPC分类号： H01Q25/00 , H01Q21/22 , H03F3/602 , H03F2200/198
摘要： A beam-forming network (98) employs one or a plurality of first transmission delay lines (168, 170, 172, 174) for receiving transmit signals (T1-T4) applied thereto, and a plurality of second transmission lines (176), which serve as line summers. Each of the first transmission delay lines has first and second portions (168a, 168b; 170a, 170b; 172a; 172b; 174a; 174b) spaced apart from one another so as to define first and second levels displaced from one another. The set of second transmission lines (176) are arranged in first and second subsets (176a, 176b) which are respectively disposed adjacent to the first and second levels and respectively associated with the first and second portions of the first lines, such that the first subset of second lines is coupled to the first portion of the first lines, and the second subset of the second lines is coupled to the second portion of the first lines. Further, selected ones of the first subset of second lines are disposed adjacent to selected ones of the second subset of second lines in order to facilitate simple and orderly routing of transmission lines (126, 128, 130) between the beam-forming network and a novel equal power amplifier system (100) described herein.
摘要翻译： 波束形成网络（98）采用一个或多个第一传输延迟线（168,170,172,174）来接收施加到其上的发射信号（T1-T4）和多个第二传输线（176）， 作为线夏天。 每个第一传输延迟线具有彼此间隔开的第一和第二部分（168a，168b; 170a，170b; 172a; 172b; 174a; 174b），以便限定彼此偏移的第一和第二级。 第二传输线（176）的组被布置在第一和第二子集（176a，176b）中，第一和第二子集（176a，176b）分别设置成与第一和第二电平相邻并且分别与第一和第二电平的第一和第二部分相关联， 第二线的子集耦合到第一线的第一部分，并且第二线的第二子集耦合到第一线的第二部分。 此外，第二行的第一子集中的选定的第二行被布置为与第二行的第二子集中的所选择的子集相邻，以便于在波束形成网络和一个或多个波束形成网络之间简单且有序地路由传输线（126,128,130） 新颖的等功率放大器系统（100）。
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公开(公告)号：US4924234A
公开(公告)日：1990-05-08
申请号：US34460
申请日：1987-03-26
申请人： James D. Thompson
发明人： James D. Thompson
CPC分类号： H01Q21/22 , H01Q25/00 , H03F3/602 , H03F2200/198
摘要： A beam-forming network (98) employs one or a plurality of first transmission delay lines (168, 170, 172, 174) for receiving transmit signals (T1-T4) applied thereto, and a plurality of second transmission lines (176), which serve as line summers. Each of the first transmission delay lines has first and second portions (168a, 168b; 170a, 170b; 172a, 172b; 174a, 174b) spaced apart from one another so as to define first and second levels displaced from one another. The set of second transmission lines (176) are arranged in first and second subsets (176a, 176b) which are respectively disposed adjacent to the first and second levels and respectively associated with the first and second portions of the first lines, such that the first subset of second lines is coupled to the first portion of the first lines, and the second subset of the second lines is coupled to the second portion of the first lines. Further, selected ones of the first subset of second lines are disposed adjacent to selected ones of the second subset of second lines in order to facilitate simple and orderly routing of transmission lines (126, 128, 130) between the beam-forming network and a novel equal power amplifier system (100) described herein.
摘要翻译： 波束形成网络（98）采用一个或多个第一传输延迟线（168,170,172,174）来接收施加到其上的发射信号（T1-T4）和多个第二传输线（176）， 作为线夏天。 每个第一传输延迟线具有彼此间隔开的第一和第二部分（168a，168b; 170a，170b; 172a，172b; 174a，174b），以便限定彼此偏移的第一和第二级。 第二传输线（176）的组被布置在第一和第二子集（176a，176b）中，第一和第二子集（176a，176b）分别设置成与第一和第二电平相邻并且分别与第一和第二电平的第一和第二部分相关联， 第二线的子集耦合到第一线的第一部分，并且第二线的第二子集耦合到第一线的第二部分。 此外，第二行的第一子集中的选定的第二行被布置为与第二行的第二子集中的所选择的子集相邻，以便于在波束形成网络和一个或多个波束形成网络之间简单且有序地路由传输线（126,128,130） 新颖的等功率放大器系统（100）。
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公开(公告)号：US4757325A
公开(公告)日：1988-07-12
申请号：US912702
申请日：1986-09-26
CPC分类号： H01Q19/13 , H01Q13/025
摘要： An improved method for designing sector beam antennas. The method is used to provide a sector beam antenna having a feed horn with a cross sectional azimuth dimension and a cross sectional elevational dimension which are optimized to irradiate a reflector to transmit a signal over a coverage area such that the gain-area-product of the transmitted signal is maximized.
摘要翻译： 一种改进的扇形波束天线设计方法。 该方法用于提供具有横截面方位尺寸和横截面正视尺寸的馈电喇叭的扇形束天线，其被优化以照射反射器以在覆盖区域上传输信号，使得增益面积乘积 发送信号最大化。
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