-
公开(公告)号：US4912367A
公开(公告)日：1990-03-27
申请号：US181279
申请日：1988-04-14
CPC分类号： H01J25/005
摘要： A high-power microwave/mm-wave oscillator is filled with an ionizable gas at a pressure of about 1-20 mTorr, into which an electron beam is injected at a high current density of at least about 1 amp/cm.sup.2, but typically 50-100 A/cm.sup.2. A plasma is formed which inhibits space-charge blowup of the beam, thereby eliminating the prior requirement of a magnet system to control the beam. The system functions as a slow-wave tube to produce narrow-band microwaves for a gas pressure of about 1-5 mTorr, and as a plasma wave tube to produce broadband microwave/mm-wave radiation for a gas pressure of about 10-20 mTorr. A new high output, hollow-cathode-plasma electron gun is employed in which a metal oxide layer is formed on the inner surface to enhance the secondary electron yield; a cathode, grid, and extraction anode have respective sets of multiple apertures which are mutually aligned to yield a high perveance beam; the cathode, grid, and anode are curved to geometrically focus the beam, and a beam with a circular cross-section is generated.
摘要翻译： 大功率微波/毫米波振荡器以约1-20毫托的压力填充可电离气体，电子束以至少约1安/厘米2的高电流密度注入电子束，但通常为50 -100A / cm 2。 形成等离子体，其阻止光束的空间电荷喷射，从而消除磁体系统先前的要求来控制光束。 该系统用作慢波管，以产生约1-5mTorr的气体压力的窄带微波，并且作为等离子体波长管产生用于气体压力约10-20的宽带微波/毫米波辐射 mTorr。 采用新的高输出中空阴极 - 等离子体电子枪，其中在内表面上形成金属氧化物层以提高二次电子产率; 阴极，栅极和提取阳极具有相互对准的多个孔的各自的组，以产生高的通量束; 阴极，栅极和阳极弯曲成几何地聚焦光束，并且产生具有圆形横截面的光束。
-
公开(公告)号：US08451171B1
公开(公告)日：2013-05-28
申请号：US12186435
申请日：2008-08-05
申请人： Joseph Santoru
发明人： Joseph Santoru
IPC分类号： H01Q1/12
CPC分类号： H01Q1/1221 , H01Q19/17
摘要： An alignment tool for aligning an antenna to a satellite configuration and a method for aligning an antenna to a satellite configuration is disclosed. An alignment tool for aligning an antenna to a satellite configuration in accordance with the present invention comprises a meter for measuring a satellite downlink signal power from the antenna, a motor for adjusting at least one fine adjustment mechanism of the antenna, and a processor, coupled to the motor and to the meter, for commanding the motor based on the received power from the antenna, wherein the processor commands the motor to maximize a received power from the antenna.
摘要翻译： 公开了一种用于将天线对准卫星配置的对准工具和用于将天线对准卫星配置的方法。 根据本发明的用于将天线对准卫星配置的对准工具包括用于测量来自天线的卫星下行链路信号功率的仪表，用于调整天线的至少一个微调机构的电动机和耦合的 到电动机和仪表，用于基于从天线接收的功率来命令电动机，其中处理器命令电动机使来自天线的接收功率最大化。
-
63.发明授权公开(公告)号：US07982687B1
公开(公告)日：2011-07-19
申请号：US12244684
申请日：2008-10-02
申请人： Joseph Santoru
发明人： Joseph Santoru
IPC分类号： H01Q15/02
CPC分类号： H01Q19/132 , H01Q19/195
摘要： Methods, systems, and apparatuses for receiving signals from communications satellites are disclosed. An antenna unit for receiving signals transmitted from a plurality of communications satellites at a plurality of orbital slots, in accordance with one or more embodiments of the present invention comprises a first reflecting surface, a frequency selective reflective surface, and a plurality of low noise block down converters with feedhorns (LNBFs), wherein at least a first LNBF is placed on the antenna unit in a first location and receives at least first signals at a first frequency band from a first orbital slot and at least a second LNBF is placed on the antenna unit at a second location and receives at least second signals at a second frequency band from the same orbital slot, wherein the first signals reflect from the first reflecting surface and transmit through the frequency selective surface and the second signals reflect from the first reflecting surface and also reflect from the frequency selective surface.
摘要翻译： 公开了用于从通信卫星接收信号的方法，系统和装置。 根据本发明的一个或多个实施例的用于接收从多个通信卫星在多个轨道时隙发射的信号的天线单元包括第一反射表面，频率选择反射表面和多个低噪声块 （LNBF），其中至少第一LNBF被放置在第一位置的天线单元上，并且从第一轨道时隙接收处于第一频带的至少第一信号，并且至少第二LNBF被放置在 天线单元，并且从相同的轨道时隙接收来自第二频带的至少第二信号，其中所述第一信号从所述第一反射表面反射并通过所述频率选择表面传输，并且所述第二信号从所述第一反射表面反射 并且还从频率选择表面反射。
-
公开(公告)号：US07859330B2
公开(公告)日：2010-12-28
申请号：US12421485
申请日：2009-04-09
申请人： Guangcai Zhou , Tung-Sheng Lin , Dennis Lai , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Cecilia Comeaux
发明人： Guangcai Zhou , Tung-Sheng Lin , Dennis Lai , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Cecilia Comeaux
IPC分类号： G01R19/00
CPC分类号： H04B17/0085 , H03F1/32 , H04B17/15
摘要： Systems and methods for characterizing amplifiers. A system for characterizing an amplifier in accordance with the present invention comprises a Gaussian signal source for generating a signal in the frequency domain, a notch filter, coupled to the Gaussian Noise source, wherein the notch filter has a notch at a specified frequency and a frequency bandwidth, the frequency bandwidth encompassing the specified frequency, an Inverse Fast Fourier Transform device, coupled to an output of the notch filter, a normalization device, coupled to the Inverse Fast Fourier Transform device, an amplifier under test, coupled to the normalization device, for amplifying the signal generated by the Gaussian signal source, and a measurement device, coupled to an output of the amplifier, for measuring a power output of the amplifier in the frequency bandwidth and a noise output at the specified notch frequency, and for calculating the ratio between the power output and the noise output.
摘要翻译： 表征放大器的系统和方法。 用于表征根据本发明的放大器的系统包括用于产生频域中的信号的高斯信号源，耦合到高斯噪声源的陷波滤波器，其中陷波滤波器具有指定频率的陷波和 频率带宽，包含指定频率的频率带宽，耦合到陷波滤波器的输出的反相快速傅立叶变换装置，耦合到快速傅立叶逆变换装置的归一化装置，被测放大器，耦合到归一化装置 ，用于放大由高斯信号源产生的信号，以及耦合到放大器的输出的测量装置，用于测量放大器在频率带宽中的功率输出和在指定陷波频率下的噪声输出，并用于计算 功率输出与噪声输出之间的比例。
-
公开(公告)号：US07844213B2
公开(公告)日：2010-11-30
申请号：US11831821
申请日：2007-07-31
申请人： Ernest C. Chen , Joseph Santoru , Shamik Maitra , Dennis Lai , Tung-Sheng Lin , Guangcai Zhou
发明人： Ernest C. Chen , Joseph Santoru , Shamik Maitra , Dennis Lai , Tung-Sheng Lin , Guangcai Zhou
IPC分类号： H04H1/00
CPC分类号： H04B7/18515
摘要： Systems for delivering a plurality of broadcast programs where the transmitter and receiver roll-off factors are mismatched. A system in accordance with the present invention comprises a transmitter comprising a modulator, and a plurality of receivers, each receiver in the plurality of receivers receiving the plurality of broadcast programs, each receiver in the plurality of receivers further comprising a demodulator; wherein the modulator has a first root-raised cosine filter having a first roll-off factor and each receiver has a second root-raised cosine filter having a second roll-off factor, the first roll-off factor being smaller than the second roll-off factor.
摘要翻译： 用于传送发射机和接收机滚降因子不匹配的多个广播节目的系统。 根据本发明的系统包括：发射机，包括调制器和多个接收机，所述多个接收机中的每个接收机接收所述多个广播节目，所述多个接收机中的每个接收机还包括解调器; 其中所述调制器具有具有第一滚降因子的第一根升余弦滤波器，并且每个接收器具有具有第二滚降因子的第二根升余弦滤波器，所述第一滚降因子小于所述第二滚降系数， 关闭因素。
-
公开(公告)号：US07663560B1
公开(公告)日：2010-02-16
申请号：US11274771
申请日：2005-11-15
CPC分类号： H01Q17/00 , H01Q1/1257 , H01Q13/02
摘要： A satellite system 10 includes an outdoor unit that has an LNB 24. The antenna of the outdoor unit is aligned using a microwave energy-absorbing cap. The microwave-absorbing cap has microwave-absorbing material therein or thereon. A signal strength meter is used to measure the signal strength with the cap on so that the signal strength meter is less likely to be saturated during the alignment process.
摘要翻译： 卫星系统10包括具有LNB24的室外单元。室外单元的天线使用微波能量吸收帽对准。 微波吸收帽在其中或其上具有微波吸收材料。 使用信号强度计来测量信号强度，盖子打开，信号强度计在对准过程中不太可能饱和。
-
公开(公告)号：US07551736B2
公开(公告)日：2009-06-23
申请号：US11102958
申请日：2005-04-11
申请人： Lin-Nan Lee , Feng-Wen Sun , Adam Von Ancken , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Lin-Nan Lee , Feng-Wen Sun , Adam Von Ancken , Joseph Santoru , Ernest C. Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first header of the first signal using a first scrambling code, scrambling a second header of the second signal using a second scrambling code, and transmitting the first signal and the second signal with the scrambled first header and the scrambled second header over different channels of the communication system.
摘要翻译： 公开了用于最小化通信系统中的同信道干扰的方法和装置。 根据本发明的方法包括使用第一扰码对第一信号的第一报头进行加扰，使用第二加扰码对第二信号的第二报头进行加扰，并且以第一加扰方式发送第一信号和第二信号 报头和通信系统的不同信道上的加扰的第二报头。
-
公开(公告)号：US07512189B2
公开(公告)日：2009-03-31
申请号：US10532632
申请日：2003-10-10
IPC分类号： H04L27/00
CPC分类号： H04L27/3488 , H04B7/18515 , H04B17/318 , H04L1/20 , H04L27/183 , H04L27/227 , H04L27/366 , H04L2027/0061
摘要： A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.
摘要翻译： 公开了一种用于发送和接收具有上层信号和下层信号的编码信号的方法和装置。 该方法包括以下步骤：组合上层信号和下层信号，编码组合上层信号和下层信号，延迟上层信号，调制延迟的上层信号，调制下层信号，发送延迟的 上层信号并传输下层信号。 该装置包括用于编码组合的上层信号和下层信号的编码器，通信地耦合到编码器的用于延迟上层信号的延迟，用于调制延迟的上层信号的第一调制器，第二调制器， 用于调制下层信号的发射机，通信地耦合到第一调制器，用于发送延迟的上层信号;以及第二发射机，通信地耦合到第二调制器。
-
公开(公告)号：US07469019B2
公开(公告)日：2008-12-23
申请号：US11655001
申请日：2007-01-18
申请人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
发明人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest C. Chen , Joseph Santoru , William C. Lindsey
IPC分类号： H04L27/04
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04W52/42
摘要： A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.
摘要翻译： 公开了一种用于优化用于发送分层调制信号的系统的方法和装置。 该方法包括以下步骤：根据一组系统参数定义系统，包括第一调制层的功率和第二调制层的功率之间的最佳功率分离S和所需的系统载波比 （CNRS），确定最佳功率分离S以最小化较低层调制信号BERL的误码率，以及使用确定的最佳功率分离S选择该组系统参数中的剩余系统参数。
-
公开(公告)号：US20080298505A1
公开(公告)日：2008-12-04
申请号：US12176533
申请日：2008-07-21
申请人： Ernest C. Chen , Joseph Santoru
发明人： Ernest C. Chen , Joseph Santoru
IPC分类号： H04L27/22
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04L2001/0098
摘要： A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8PSK signal, are disclosed. An exemplary method includes demodulating and processing (502) the hierarchically modulated signal (202) to produce symbols (212) from the first modulation at the first hierarchical level, applying information (504) from a plurality of the symbols from the first modulation at the first hierarchical level in subtracting (214) from the demodulated hierarchically modulated signal to obtain the second modulation at the second hierarchical level and processing (506) the second modulation at the second hierarchical level to produce second symbols (222) from the demodulated second signal. The hierarchically modulated signal comprises a non-uniform 8PSK signal. Applying the information from the plurality of the symbols from the first modulation can be achieved by applying the symbols after error correction. A decision-directed demodulation of the first modulation can also be used to further improve performance.
摘要翻译： 用于解调和解码分层调制信号的方法和接收机系统，例如， 8PSK信号。 一种示例性方法包括解调和处理（502）分级调制信号（202）以从第一层级的第一调制产生符号（212），从来自第一调制的多个符号应用信息（504） 从解调的分层调制信号中减去（214）第一层级，以获得第二层级的第二调制，并处理（506）第二层级的第二调制，以从解调的第二信号产生第二符号（222）。 分级调制信号包括不均匀的8PSK信号。 可以通过在纠错后应用符号来实现来自第一调制的多个符号的信息。 也可以使用第一调制的决策导向解调来进一步提高性能。
-
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.022 秒)
