公开(公告)号：US4710975A

公开(公告)日：1987-12-01

申请号：US365345

申请日：1982-04-05

申请人： Yoshiharu Okamoto ,  Izumi Horikawa ,  Shozo Komaki

发明人： Yoshiharu Okamoto ,  Izumi Horikawa ,  Shozo Komaki

IPC分类号： H04B7/08

CPC分类号： H04B7/084

摘要： A space diversity reception system which minimizes the inband amplitude and/or phase dispersion by controlling the phase shifter is described. According to the present invention, the interference waves in the two antenna outputs are combined in anti-phase condition. The phase shifter control direction is decided by the sign of the two parameters. One of them is difference between two antenna levels at the center frequency of the pass-band, and the other is the difference of the combined signal levels at the extreme edges of the pass-band. The control means comprises four detectors for detecting said levels, two subtractors for providing said level differences between them, and the control circuit for deciding the phase shifter control direction.

摘要翻译： 描述了通过控制移相器来最小化带内幅度和/或相位色散的空间分集接收系统。 根据本发明，两个天线输出中的干扰波被组合成反相状态。 移相器控制方向由两个参数的符号决定。 其中之一是在通带的中心频率处的两个天线电平之间的差异，另一个是通带极端边缘处的组合信号电平的差异。 控制装置包括用于检测所述电平的四个检测器，用于提供它们之间的所述电平差的两个减法器和用于确定移相器控制方向的控制电路。

公开(公告)号：US4326294A

公开(公告)日：1982-04-20

申请号：US113591

申请日：1980-01-21

申请人： Yoshiharu Okamoto ,  Izumi Horikawa ,  Shozo Komaki

发明人： Yoshiharu Okamoto ,  Izumi Horikawa ,  Shozo Komaki

IPC分类号： H04B7/08

CPC分类号： H04B7/084

摘要： A space diversity reception system which minimizes the inband amplitude and/or phase dispersion by controlling the phase shifter is described. According to the present invention, the interference waves in the two antenna outputs are combined in anti-phase condition. The phase shifter control direction is decided by the sign of the two parameters. One of them is difference between two antenna levels at the center frequency of the pass-band, and the other is the difference of the combined signal levels at the extreme edges of the pass-band. The control means comprises four detectors for detecting said levels, two subtractors for providing said level difference between them, and the control circuit for deciding the phase shifter control direction.

摘要翻译： 描述了通过控制移相器来最小化带内幅度和/或相位色散的空间分集接收系统。 根据本发明，两个天线输出中的干扰波被组合成反相状态。 移相器控制方向由两个参数的符号决定。 其中之一是在通带的中心频率处的两个天线电平之间的差异，另一个是通带极端边缘处的组合信号电平的差异。 控制装置包括用于检测所述电平的四个检测器，用于提供它们之间的所述电平差的两个减法器和用于确定移相器控制方向的控制电路。

公开(公告)号：US06058145A

公开(公告)日：2000-05-02

申请号：US988934

申请日：1997-12-11

申请人： Shozo Komaki ,  Minoru Okada ,  Takeshi Kawabe

发明人： Shozo Komaki ,  Minoru Okada ,  Takeshi Kawabe

IPC分类号： H04J11/00 ,  H04B3/06 ,  H04B7/005 ,  H04L25/03 ,  H04L27/26 ,  H04L27/14 ,  H03D3/00 ,  H04L27/06

CPC分类号： H04L25/03159 ,  H04L27/2653 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2676 ,  H04L2025/03414 ,  H04L2025/03522

摘要： A multi-frequency quadrature modulated signal is divided into a plurality of frequency bands. Each frequency band component is estimated as to variation in phase due to multi-path phasing, using its guard interval waveform so as to compensate the variation.

摘要翻译： 多频正交调制信号被分成多个频带。 使用其保护间隔波形来估计由于多路径定相而导致的相位变化的每个频带分量，以补偿变化。

公开(公告)号：US5999575A

公开(公告)日：1999-12-07

申请号：US784054

申请日：1997-01-17

申请人： Ryohei Tanaka ,  Minoru Okada ,  Shinsuke Hara ,  Shozo Komaki ,  Norihiko Morinaga

发明人： Ryohei Tanaka ,  Minoru Okada ,  Shinsuke Hara ,  Shozo Komaki ,  Norihiko Morinaga

IPC分类号： H04L27/22 ,  H03H17/02 ,  H04J1/00 ,  H04J1/04 ,  H04L5/06 ,  H04B1/10

CPC分类号： H04J1/04 ,  H03H17/0264 ,  H04L5/06

摘要： There is disclosed a channel separating filter apparatus for separating a frequency-multiplexed signal comprised of channel signals into respective channel signals. A frequency-converting section frequency-converts the frequency-multiplexed signal into a plurality of channel signals, so that an average value of carrier wave frequencies of two channel signals which are located in the center of the frequency-multiplexed signal and are adjacent to each other becomes substantially zero, and then outputs the plurality of frequency-converted channel signals. Thereafter, a channel separating section separates the plurality of frequency-converted channel signals outputted from the frequency-converting section into respective channel signals each having only a frequency component of each channel signal, thereby separating the frequency-multiplexed signal into at least two channel signals.

摘要翻译： 公开了一种用于将由信道信号组成的频率复用信号分离成各个信道信号的信道分离滤波装置。 频率转换部将频率复用信号频率转换为多个信道信号，使得位于频率复用信号的中心并与每个信道相邻的两个信道信号的载波频率的平均值 其他变为基本为零，然后输出多个频率转换的信道信号。 此后，信道分离部分将从频率转换部分输出的多个频率转换信道信号分离成各自仅具有每个信道信号的频率分量的信道信号，从而将频率复用信号分离为至少两个信道信号 。