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    • 94. 发明授权
    • Phase synchronizing circuit
    • 相位同步电路
    • US4394626A
    • 1983-07-19
    • US211847
    • 1980-12-01
    • Hiroshi KuriharaSadao TakenakaEiji Itaya
    • Hiroshi KuriharaSadao TakenakaEiji Itaya
    • H03L7/10H03L7/087H04L7/027H04L27/00H04L27/227H03L7/08
    • H04L27/2273H03L7/087H04L7/027H04L2027/003H04L2027/0057
    • A phase synchronizing circuit, wherein two phase detectors are used in quadrature to detect the phase of an input signal and to avoid hang-up when the phase of the input signal changes abruptly by 180.degree.. The two detected phase signals are then multiplied by a locally generated reference signal and re-combined, so that a synchronized output signal having reduced phase jitter results. This circuit is also incorporated in an N-phase PSK system, where it is used as a synchronizer and not as a demodulator. In a receiver for such a PSK system, the frequency of the received signal is multiplied by N, the phase synchronizer circuit of the invention is then used to extract the carrier (at a N times higher frequency), and a divider is then used to convert the synchronized carrier provided by the synchronizer circuit of the invention down to the original frequency.
    • 相位同步电路,其中两相检测器用于正交检测输入信号的相位,并且当输入信号的相位突然变化180°时避免挂起。 然后将两个检测到的相位信号乘以本地产生的参考信号并重新组合,使得具有降低的相位抖动的同步输出信号结果。 该电路也被并入N相PSK系统中,其被用作同步器而不是解调器。 在这种PSK系统的接收机中,将接收信号的频率乘以N,然后使用本发明的相位同步器电路提取载波(频率为N倍),然后使用分频器 将由本发明的同步器电路提供的同步载波转换为原始频率。
    • 95. 发明授权
    • Cross polarization compensating system
    • 交叉极化补偿系统
    • US4310813A
    • 1982-01-12
    • US154096
    • 1980-05-28
    • Hironori YuukiKazunori InagakiMakoto AraiNoboru BabaMatsuichi YamadaHiroshi Kurihara
    • Hironori YuukiKazunori InagakiMakoto AraiNoboru BabaMatsuichi YamadaHiroshi Kurihara
    • H04J11/00H04B7/00H01P1/161
    • H04B7/002
    • A cross polarization compensating system, in which two elliptically polarized waves of opposite polarities are applied to a cascade connection of two successively connected rotatable 90.degree. phase shifters and an Orthomode (Trademark) transducer. Two cross polarized wave components of the two elliptically polarized waves are detected from the two perpendicularly intersecting output terminals of the Orthomode (Trademark) transducer. Two in-phase components of the same phase as their co-polarized components of the two cross-polarized wave components and two orthogonal components each having a phase difference of 90.degree. from corresponding one of the co-polarized waves of the two cross-polarized wave components are detected from the two output terminals of the Orthomode (Trademark) transducer. One of the two phase shifters is controlled by an addition output of the two in-phase components while the other of the two phase shifters is controlled by a difference output between the two orthogonal components, so that two elliptically polarized waves at the output terminals of the Orthomode (Trademark) transducer are made equal in the cross polarization, and so that a phase difference between the co-polarized wave components and a phase difference between the cross-polarized wave components are made equal in magnitude and opposite in sign.
    • 交叉极化补偿系统,其中两个相反极性的椭圆极化波被施加到两个相继连接的可旋转90°移相器和Orthomode(商标)换能器的级联。 从Orthomode(商标)传感器的两个垂直相交的输出端检测两个椭圆偏振波的两个交叉极化波分量。 与两个交叉极化波分量的共极化分量相同的相位的两个同相分量和两个正交分量,每个正交分量各自具有与两个交叉极化的相位差相对应的90°的相位差 从Orthomode(商标)传感器的两个输出端检测波分量。 两个移相器中的一个由两个同相分量的相加输出控制,而两个移相器中的另一个由两个正交分量之间的差输出控制,使得在输出端的两个椭圆偏振波 使正交模(商标)换能器在交叉极化中相等,使得共极化波分量之间的相位差和交叉极化波分量之间的相位差在幅度上相等并且符号相反。