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    • 7. 发明授权
    • Optical cable with extruded peripheral reinforcements
    • 具有挤出外围加强件的光缆
    • US5892873A
    • 1999-04-06
    • US784472
    • 1997-01-17
    • Olivier Tatat
    • Olivier Tatat
    • G02B6/44
    • G02B6/443G02B6/4432G02B6/4486
    • An optical cable has a core containing optical fibers, non-metallic peripheral reinforcements to armor the cable and a thermoplastics material outer sheath. It is fabricated by a method including successive steps of applying reinforcements to the core, extruding the sheath over the reinforcements and cooling the cable. The reinforcements are extruded onto the core as it moves through a first extruder. The combination of the core and the reinforcements is then cooled in a first cooling tank. The sheath is extruded in a second extruder downstream of the first, after which the cable is cooled in a second cooling tank downstream of the first.
    • 光缆具有包含光纤的芯,用于装配电缆的非金属外围加强件和热塑性材料外护套。 它通过一种方法制造,该方法包括将加强件施加到芯上,将护套挤压在加强件上并冷却电缆的连续步骤。 当增强件移动通过第一挤出机时,加强件被挤压到芯上。 然后将芯和增强件的组合在第一冷却槽中冷却。 护套在第一挤出机下游的第二挤出机中挤出,然后将电缆在第一冷却槽的下游冷却。
    • 8. 发明授权
    • Quadrature modulator malfunction estimator and modulator stage using it
    • 正交调制器故障估计器和使用它的调制器级
    • US5883551A
    • 1999-03-16
    • US969154
    • 1997-11-12
    • Rossano MarchesaniJean-Xavier Canonici
    • Rossano MarchesaniJean-Xavier Canonici
    • H04L27/20H04L27/00H04L27/36
    • H04L27/364H04L2027/0016
    • A quadrature modulator including two mixers to which two carrier signals are applied and to each of which a modulating signal is applied, output signals of the mixers being applied to a combiner to constitute a modulated signal. A defect estimator for the modulator detects a first signal representative of the instantaneous power of the modulated signal, generates a second signal representative of a reference envelope obtained from the modulating signals, and corrects the amplitude of one of the first and second signals in accordance with the mean amplitude difference observed between this amplitude corrected signal and the other signal. A processor supplies from the observed amplitude difference between the amplitude corrected signal and the other signal, at least one signal relating to the defect.
    • 一种正交调制器,包括两个施加两个载波信号的混频器,并且其中施加调制信号的每个混频器将混频器的输出信号施加到组合器以构成调制信号。 用于调制器的缺陷估计器检测表示调制信号的瞬时功率的第一信号,产生表示从调制信号获得的参考包络的第二信号,并且根据调制信号校正第一和第二信号之一的振幅 在该幅度校正信号与另一信号之间观察到的平均振幅差。 处理器从观测到的幅度校正信号和另一信号之间的振幅差提供与缺陷有关的至少一个信号。