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31.发明授权
公开(公告)号：EP1894307B1
公开(公告)日：2008-12-17
申请号：EP06710153.5
申请日：2006-02-06
申请人： Astrium Limited
CPC分类号： H04B1/26 , H04B1/1027
摘要： A system which provides frequency conversion and continuously variable bandwidth control is implemented using first and second filter networks that exhibit a generalised Chebyshev transfer function. The first and second filter networks may comprise a pseudo-high-pass type filter in combination with a pseudo-low-pass type filter, or in a particularly efficient embodiment, a pseudo- high-pass type filter in combination with an elliptic low pass type filter. The effective frequency response overlap of first and second filter networks produces a composite band-pass filter response which is highly selective by nature and is determined only by the steep band edge transition region of the individual filter networks. The maximum pass-band of the first and second filter networks can be tailored to precisely fit the maximum band-pass bandwidth required by a channelised radio communications system. This is advantageous in that the individual filter pass-bands will be fully utilised and the single sided band edge transition slope is for a given number of components is optimised. This eliminates the requirement to increase the number of circuit components in order to achieve the desired selectivity.
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公开(公告)号：EP1901477A1
公开(公告)日：2008-03-19
申请号：EP06270084.4
申请日：2006-09-13
申请人： Astrium Limited
CPC分类号： G06F7/588 , H04L9/0618 , H04L9/0668 , H04L9/0838
摘要： A method and apparatus for obtaining, while on a spacecraft, a random number and hence a secure cryptographic key. The method includes the steps of providing, on the spacecraft, a device capable of producing random information when subject to random space phenomena, obtaining the random information and producing a random number therefrom and using an algorithm to establish the secure key. The apparatus includes a random access memory (RAM) which experiences bit-flips when struck by radiation such as cosmic rays. Changes in the RAM bits are propagated using a linear feedback shift register.
摘要翻译： 一种用于在航天器上获得随机数并因此获得安全密码密钥的方法和装置。 该方法包括以下步骤：在航天器上提供能够在受到随机空间现象时产生随机信息的装置，获得随机信息并从中产生随机数并使用算法建立安全密钥。 该装置包括一个随机存取存储器（RAM），当被诸如宇宙射线的辐射照射时，该随机存取存储器经受位翻转。 RAM位的改变使用线性反馈移位寄存器传播。
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公开(公告)号：EP1087238B1
公开(公告)日：2004-05-19
申请号：EP00308334.2
申请日：2000-09-22
CPC分类号： G01S7/025 , G01S7/4004 , G01S13/90
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公开(公告)号：EP1134640A2
公开(公告)日：2001-09-19
申请号：EP00309213.7
申请日：2000-10-19
申请人： Astrium Limited
发明人： Holt, Antony Philip
摘要： Attitude is controlled using reaction wheels (or other reaction means) taking as the control signal the inertial momentum vector of the spacecraft, based on the estimated momentum of the structure of the spacecraft and the sensed momentum of the reaction means, to provide more accurate control than hitherto.
摘要翻译： 基于估计的航天器结构的动量和反应装置的动量，使用反作用力（或其他反应装置）作为控制信号作为航天器的惯性动量矢量来控制姿态，以提供更准确的控制 比迄今为止。
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公开(公告)号：EP2022168B1
公开(公告)日：2018-09-05
申请号：EP07733659.2
申请日：2007-05-04
申请人： Astrium Limited
CPC分类号： H03F1/0244 , H03F1/0211 , H03F1/0222 , H03F1/0266 , H03F1/32 , H03F3/24 , H03F2200/105 , H03F2200/468 , H03F2201/3203
摘要： A Solid State Power Amplifier (SSPA) for powering a single element of a multi-element antenna, the SSPA comprising: an RF amplifier, having a signal amplifying path that includes preamplifier, driver amplifier and a power output stage; an Electronic Power Conditioner (EPC) for providing a variable value of DC voltage for powering the power output stage of the RF amplifier; a control ASIC for receiving an input power signal of the RF amplifier for providing a voltage control signal to the EPC to determine the value of the DC voltage, the control ASIC addressing an EEPROM holding a collection of control words that define output values of a control output signal for varying values of said input power, such that the value of the DC voltage to the power output stage is varied so as to control the gain compression of the RF amplifier for varying values of input power in order to maintain constant amplifier linearity.
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公开(公告)号：EP2766759B1
公开(公告)日：2018-05-09
申请号：EP12773292.3
申请日：2012-10-09
申请人： Astrium Limited
发明人： SWEENEY, Stephen , ZHANG, Yaping
CPC分类号： G02B6/293 , G01J3/0205 , G01J3/0218 , G01J3/0259 , G02B6/29341
摘要： A structure for guiding electromagnetic radiation, comprising: a substrate (230); a waveguide (220) provided on the substrate and having a first end (220a) for receiving electromagnetic radiation and a second end (220b); and an anti-reflection region (270) provided at the second end (220b) of the waveguide on the substrate, the length and the width of the anti-reflection region being optimised to suppress back reflection of radiation that reaches the second end.
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公开(公告)号：EP2541812B1
公开(公告)日：2017-04-19
申请号：EP11275102.9
申请日：2011-06-30
申请人： Astrium Limited
发明人： Morris, Ian
CPC分类号： H04B17/40 , H04B17/0085
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38.发明授权MITIGATING A PHASE ANOMALY IN AN ANALOGUE-TO-DIGITAL CONVERTER OUTPUT SIGNAL 有权一相异常对模拟 - 数字转换器的输出弱化
公开(公告)号：EP2831998B1
公开(公告)日：2016-07-27
申请号：EP13713831.9
申请日：2013-03-26
申请人： Astrium Limited
发明人： FARRUGIA, Lewis , GIBSON, Mark , PEARSON, Ryan
CPC分类号： H04B1/1027 , H03M1/0836 , H03M1/12
摘要： A method and apparatus for mitigating a phase anomaly in an analogue-to-digital converter (ADC) output signal is disclosed. A plurality of codewords output by the ADC are received and information about an estimated level of interference due to the codeword is obtained for each codeword based on the logic values of bits in the codeword. In-phase (I) and quadrature (Q) corrections are obtained based on the information about the estimated level of interference, and applied to I and Q values obtained from the ADC output signal. The information about the estimated level of interference can be obtained based on the Hamming weight of the codeword, a weighted digit sum of the codeword, and the numbers of 0 to 1 and 1 to 0 transitions between the current codeword and the preceding codeword. In an embodiment, the information about the estimated level of interference can be a sequence of values defining an estimated interfering signal, and scaling and rotating the estimated interfering signal according to predetermined amplitude scaling and phase rotation parameters.
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39.发明授权A METHOD OF MANUFACTURING A CONNECTOR, AND A CONNECTOR 有权HERSTELLUNGSVERFAHREN EINES VERBINDERS UND VERBINDER
公开(公告)号：EP2559113B1
公开(公告)日：2015-04-08
申请号：EP11714323.0
申请日：2011-04-15
申请人： Astrium Limited
IPC分类号： H01R13/11 , H01R43/16 , H01R13/03 , H01R13/622 , H01R103/00 , H01R24/40
CPC分类号： H01R24/40 , H01R13/03 , H01R13/11 , H01R13/111 , H01R13/622 , H01R43/16 , H01R2103/00 , Y10T29/49204
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公开(公告)号：EP2774219A1
公开(公告)日：2014-09-10
申请号：EP12783189.9
申请日：2012-10-30
申请人： Astrium Limited
CPC分类号： H01Q19/134 , H01Q13/20 , H01Q19/193
摘要： A reflector antenna includes a dual-band waveguide feed and a splashplate support arranged to define a space between the waveguide feed aperture and the splashplate. The dual-band waveguide feed is configured to receive an input signal in a first transmission mode, the input signal including a plurality of frequencies arranged into upper and lower frequency bands, and includes means for converting a transmission mode of the upper frequency band from a first transmission mode to a mixed transmission mode including the first transmission mode and a second transmission mode. The supporting portion can be spaced apart from the aperture of the waveguide feed, and may have a thickness corresponding to half a wavelength of a beam emitted from the aperture. The shape of the supporting portion may preferably correspond to a shape of the beam wavefront after it has been reflected from the splashplate. A satellite including the reflector antenna is also disclosed.
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