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51.发明申请公开(公告)号：US20070147557A1
公开(公告)日：2007-06-28
申请号：US11641352
申请日：2006-12-19
申请人： Vincent Demoulin , Olivier Mocquard , Samuel Guillouard , Franck Thudor , Jean-Yves Le Naour , Jacques Perraudeau
发明人： Vincent Demoulin , Olivier Mocquard , Samuel Guillouard , Franck Thudor , Jean-Yves Le Naour , Jacques Perraudeau
CPC分类号： H03G3/3068 , H03G3/3078 , H04L7/04
摘要： The gain control method for the RF and IF amplification stages of a bursty data frame reception system enables, following a step for evaluating the received signal strength, the gain adjustment step of the RF amplification stage to be temporarily deferred until a frame structure symbol is received, during which the gain adjustment step of the IF amplification stage takes place simultaneously with that of the RF gain, while retaining an overall gain linearly dependent on the input signal strength. The corresponding device comprises a control element 46 which generates the control signal for the RF and IF gain amplifiers
摘要翻译： 用于突发数据帧接收系统的RF和IF放大级的增益控制方法使得能够在RF放大级的增益调整步骤暂时延迟到接收到帧结构符号之后，在接收信号强度评估步骤之后， 在此期间，IF放大级的增益调整步骤与RF增益的增益调节步骤同时进行，同时保持与输入信号强度成线性关系的总体增益。 相应的装置包括控制元件46，其产生用于RF和IF增益放大器的控制信号
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52.发明申请Broad distribution bi-directional user terminal at configurable broadcast frequencies 有权广泛分布的双向用户终端可配置广播频率公开(公告)号：US20070032190A1
公开(公告)日：2007-02-08
申请号：US10572089
申请日：2004-09-13
IPC分类号： H04B7/185
CPC分类号： H01P1/209
摘要： The invention proposes an upgradable product capable of covering two sub-bands. An outdoor unit comprises, on the uplink, a switchable oscillator coupled to a waveguide featuring a removable cover enabling the said waveguide to be converted into a band rejector filter.
摘要翻译： 本发明提出了能够覆盖两个子带的可升级产品。 室外单元在上行链路上包括耦合到波导的可切换振荡器，其具有能够将所述波导转换成频带退出滤波器的可拆卸盖。
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公开(公告)号：US07132907B2
公开(公告)日：2006-11-07
申请号：US10494983
申请日：2002-10-24
IPC分类号： H01P5/12
CPC分类号： H01P1/2131
摘要： The module comprises an input/output access point at a first end of a waveguide with a square cross section, called a square waveguide, two access points made of waveguides with a rectangular cross section, called rectangular waveguides, placed side by side at a second end of the square waveguide and a septum positioned in the square waveguide at the end of a separation region common to the two rectangular waveguides in order to allow the production of two circular polarizations of opposite handedness each associated with a rectangular waveguide. The module is arranged so as to form a diplexer in which the septum is included and where the access points by rectangular waveguide are extended by filters, each access point being endowed with a filter provided in order to transmit a frequency band which is different. The steps of the septum are dimensioned so as to compensate for reflections.
摘要翻译： 该模块包括在具有正方形横截面的波导的第一端处的输入/输出接入点，称为方波导，由具有矩形横截面的波导制成的两个接入点，称为矩形波导，并入第二个 方波波导的端部和位于两个矩形波导共用的分离区域的端部处的方波导中的隔膜，以便允许产生与矩形波导相关联的相反方向性的两个圆偏振。 该模块被布置成形成其中包括隔膜并且矩形波导的接入点通过滤波器延伸的双工器，每个接入点被赋予滤波器，以便发送不同的频带。 隔膜的步骤的尺寸被设计成补偿反射。
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公开(公告)号：US07046976B2
公开(公告)日：2006-05-16
申请号：US10075833
申请日：2002-02-13
IPC分类号： H04B7/00
摘要： The invention aims to minimize the analogue/digital converter over-dimensioning within the framework of reception of signals originating from a satellite and exhibiting power levels which can vary over time. The invention proposes a technique of automatic gain control which handles the setting of the noise level associated with the amplified signal. The automatic gain control is achieved by neutralizing the signal received by the antenna, and by adjusting the gain during the neutralization of the signal received until a predetermined noise level is obtained at the end of the reception facility. The invention also pertains to a device comprising the means for implementing the method.
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55.发明申请Device for converting frequencies, method of calibrating said device and system for transmitting/receiving electromagnetic signals comprising such a device 有权用于转换频率的装置，校准所述装置的方法和用于发送/接收包括这种装置的电磁信号的系统公开(公告)号：US20050277395A1
公开(公告)日：2005-12-15
申请号：US11147839
申请日：2005-06-08
CPC分类号： H03D7/02
摘要： The invention relates to a device for converting frequencies comprising a local oscillator of fixed frequency and a first mixer with two inputs and an output, a first input receiving the signal to be converted and a second input receiving the signal arising from the local oscillator. It further comprises a second mixer with two inputs and an output, a first input receiving the signal arising from the phase-shifted local oscillator and the second input receiving a dc signal whose value is dependent on the power of the residual spectral component at the output of an adder receiving as input the signals arising from the first and from the second mixer(s) and giving as output a transposed signal. The invention applies in particular in terminals operating in the Ka band.
摘要翻译： 本发明涉及一种用于转换频率的装置，包括固定频率的本地振荡器和具有两个输入的第一混频器和一个输出端，接收待转换信号的第一输入端和接收本地振荡器产生的信号的第二输入。 它还包括具有两个输入和一个输出的第二混频器，第一输入接收由相移本地振荡器产生的信号，第二输入端接收直流信号，该直流信号的值取决于输出端的剩余频谱分量的功率 一个加法器接收从第一和第二混频器输出的信号作为输入，并输出转置的信号。 本发明尤其适用于在Ka频段工作的终端。
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