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公开(公告)号：EP2311144B1
公开(公告)日：2020-01-15
申请号：EP09781143.4
申请日：2009-07-27
申请人： Astrium Limited
发明人： MAXWELL-COX, Graham
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公开(公告)号：EP2559098B1
公开(公告)日：2019-08-21
申请号：EP11714588.8
申请日：2011-04-18
申请人： Astrium Limited
发明人： KUNES, Mark, Anthony
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公开(公告)号：EP2766757B1
公开(公告)日：2018-08-08
申请号：EP12772908.5
申请日：2012-10-09
申请人： Astrium Limited
发明人： SWEENEY, Stephen , ZHANG, Yaping
IPC分类号： G02B6/293
CPC分类号： H01L31/035236 , B82Y20/00 , G01J3/0205 , G01J3/0259 , G01J3/42 , G02B6/29341 , G02F1/01708 , G02F2001/0155 , G06F17/5045 , H01L27/1446 , H01L31/02325
摘要： A device for guiding and absorbing electromagnetic radiation, the device comprising: absorbing means for absorbing the electromagnetic radiation; and a coupled to the absorbing means for guiding the electromagnetic radiation to the absorbing means, wherein the waveguide and the absorbing means are formed from a structure comprising a first cladding layer, a second cladding layer over the first cladding layer, and a quantum-well layer between the first and second cladding layers, the quantum-well layer being formed of a material having a different composition to the first and second cladding layers, wherein the thickness and the composition of the quantum-well layer is optimised to control the degree of absorption of electromagnetic radiation in the waveguide while providing an appropriate band gap for absorption of the electromagnetic radiation in the absorbing means.
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公开(公告)号：EP2433382B1
公开(公告)日：2018-03-07
申请号：EP10725357.7
申请日：2010-05-20
申请人： Astrium Limited
发明人： LESTER, Donald , HODSON, Kevin
CPC分类号： H04H40/90 , H04H20/74 , Y02D70/168
摘要： A receiving device for receiving a satellite broadcast comprising: a receiver for receiving a sustaining satellite beam; and a controller for switching the receiver to receive a high power content beam in response to a determination that the high power content beam can be received by the receiving device. A communication satellite transmits the high power content beam to different geographical areas at different times. The sustaining beam allows the receiving device to remain synchronised with the communication satellite when the high power content beam is directed elsewhere. The sustaining beam may be a lower power beam. The determination that the high power content beam can be received may be performed based on information in the sustaining beam. Alternatively or additionally, the determination that the high power content beam can be received may be made by monitoring the signal strength of a frequency associated with the high power content beam.
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公开(公告)号：EP2443039B1
公开(公告)日：2015-01-07
申请号：EP10728630.4
申请日：2010-06-17
申请人： Astrium Limited
发明人： SLADE, Richard, Paul
CPC分类号： E04H12/185 , B64G1/222 , B64G1/66 , B64G2001/1092
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公开(公告)号：EP2818419A1
公开(公告)日：2014-12-31
申请号：EP13275146.2
申请日：2013-06-27
申请人： Astrium Limited
发明人： Garland, Martin , Bamford, Stephen , White, Carl
摘要： The invention relates to a gear assembly (10) for use in a space craft for control of a moveable component thereof. The assembly comprises a load gear (11) in engagement with a drive gear (12) and an auxiliary gear (13). The drive gear (12) is coupled to a drive motor (14) so as to drive the load gear (11) in a first rotational direction. The auxiliary gear (13) is coupled to a retardation device (15) that is configured to passively resist the load gear (11) from rotating in the first rotational direction.
摘要翻译： 本发明涉及一种用于太空飞船中用于控制其可移动部件的齿轮组件（10）。 组件包括与驱动齿轮（12）和辅助齿轮（13）接合的负载齿轮（11）。 驱动齿轮（12）联接到驱动马达（14），以便沿第一旋转方向驱动载荷齿轮（11）。 辅助齿轮（13）联接到延迟装置（15），其构造成被动地抵抗负载齿轮（11）沿第一旋转方向旋转。
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公开(公告)号：EP2766988A1
公开(公告)日：2014-08-20
申请号：EP12761716.5
申请日：2012-09-12
申请人： Astrium Limited
发明人： GOSS, Martin
CPC分类号： H03G1/0017 , H03F1/3241 , H03F1/3247 , H03F1/3282 , H03F1/345 , H03F3/19 , H03F3/21 , H03F2200/405 , H03F2200/438 , H03F2200/451 , H03F2200/66 , H03F2201/3233
摘要： An apparatus for controlling the gain and phase of an input signal input to a power amplifier comprises a gain control loop configured to control the gain of the input signal based on power levels of the input signal and an amplified signal output by the power amplifier, to obtain a predetermined gain of the amplified signal, and a phase control loop configured to obtain an error signal related to a phase difference between a first signal derived from the input and a second signal derived from the amplified signal, and control the phase based on the error signal, to obtain a predetermined phase of the amplified signal. The phase control loop is arranged to delay the first signal before obtaining the error signal, such that the delayed first signal and the second signal used to obtain the error signal correspond to the same part of the input signal. The gain control loop may compare a power of a third signal derived from the input signal and a power of a fourth signal derived from the amplified signal. The third and fourth signals may be output by first and second couplers, which may have coupling factors that are selected such that the third and fourth signals have the same power level when the amplified signal has the predetermined gain. The current gain and phase of the amplified signal may be dependent on an operational history of the power amplifier, which may be a GaN power amplifier, and the apparatus and power amplifier may be included in a satellite. In another embodiment, a satellite includes a power amplifier control system that uses a feed-forward control loop to control both the gain and phase of a signal input to the power amplifier.
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公开(公告)号：EP2766755A1
公开(公告)日：2014-08-20
申请号：EP12769130.1
申请日：2012-10-09
申请人： Astrium Limited
发明人： SWEENEY, Stephen , ZHANG, Yaping
CPC分类号： G01J3/0256 , G01J3/0205 , G01J3/0259 , G02B6/1228 , G02B6/29343
摘要： A spectrometer comprises a substrate and a waveguide on the substrate, the waveguide including an elongate part and a tapered input for guiding electromagnetic radiation to the elongate part. The tapered input includes an input end for receiving the electromagnetic radiation and an output end coupled to the elongate part, the input end being wider than the output end. The spectrometer may further comprise a plurality of resonators coupled to the elongate part of the waveguide.
摘要翻译： 光谱仪包括衬底和衬底上的波导，波导包括细长部分和用于将电磁辐射引导到细长部分的锥形输入。 锥形输入包括用于接收电磁辐射的输入端和耦合到细长部分的输出端，输入端比输出端宽。 光谱仪还可以包括耦合到波导的细长部分的多个谐振器。
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公开(公告)号：EP2663042A1
公开(公告)日：2013-11-13
申请号：EP12275064.9
申请日：2012-05-09
申请人： Astrium Limited
发明人： Young, David
CPC分类号： H04L25/03159 , H03H21/0001 , H04B7/18513 , H04L25/03878 , H04L2025/03375
摘要： There is provided a filter network arrangement comprising a filter network; and one or more correction networks, wherein the one or more correction networks is arranged to substantially equalise the passband gain and group delay of the filter network arrangement. Given an appropriate Q for the one or more correction networks, a polynomial for the one or more correction networks can be found that equalises both the passband gain and group delay and the one or more correction networks can be synthesised from the polynomial.
摘要翻译： 提供了一种包括滤波器网络的滤波器网络布置; 以及一个或多个校正网络，其中所述一个或多个校正网络被布置为基本上均衡滤波器网络布置的通带增益和组延迟。 给定一个或多个校正网络的适当的Q，可以找到一个或多个校正网络的多项式，其使通带增益和组延迟均衡，并且可以从多项式来合成一个或多个校正网络。
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