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    • 4. 发明授权
    • Reception circuit
    • 接收电路
    • US08681913B2
    • 2014-03-25
    • US13295052
    • 2011-11-12
    • Naohisa TakayamaRyoji HayashiHiroyuki JobaMorishige Hieda
    • Naohisa TakayamaRyoji HayashiHiroyuki JobaMorishige Hieda
    • H03D1/00
    • H04L7/042
    • A reception circuit is provided which can detect the beginning of data regardless of a preamble or a unique word contained or not in a received signal and regardless of coding systems for received signals. The reception circuit includes a correlation operation portion that performs a correlation operation to generate a correlation signal while sliding one symbol of reference signal in relation to a received signal. The reference signal goes to a high level during a first half symbol period and goes to a low level during a second half symbol period. The reception circuit further includes: a delay portion that outputs a delay signal by delaying the received signal for a half symbol period in relation to the received signal; and a data beginning timing detection portion that detects a beginning peak timing for the correlation signal as a beginning timing of data contained in the delay signal.
    • 提供了一种可以检测数据开始的接收电路,而不管前置码或包含或不包含在接收信号中的唯一字,而不管接收信号的编码系统如何。 接收电路包括相关操作部分,其执行相关操作以产生相关信号,同时相对于接收信号滑动参考信号的一个符号。 参考信号在第一半符号周期期间进入高电平,并且在后半个符号周期期间变为低电平。 接收电路还包括:延迟部分,通过相对于所接收的信号延迟接收信号半个符号周期来输出延迟信号; 以及数据开始定时检测部分,其将相关信号的开始峰值定时检测为包含在延迟信号中的数据的开始定时。
    • 10. 发明授权
    • Phase-shifting circuit and multibit phase shifter
    • 移相电路和多位移相器
    • US07541894B2
    • 2009-06-02
    • US10594009
    • 2004-07-27
    • Kenichi MiyaguchiMorishige HiedaTamotsu NishinoMasatake HangaiMoriyasu MiyazakiYukihisa YoshidaTadashi TakagiMikio Hatamoto
    • Kenichi MiyaguchiMorishige HiedaTamotsu NishinoMasatake HangaiMoriyasu MiyazakiYukihisa YoshidaTadashi TakagiMikio Hatamoto
    • H01P9/00
    • H01P1/185H03H11/20H03H11/48H03H19/008
    • A phase-shifting circuit includes: a first parallel circuit which is connected across input and output terminals of a high frequency signal, composed of a first inductor and a first switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the first switching element is in the OFF state; a series circuit composed of a second inductor and a third inductor and connected in parallel with the first parallel circuit; a capacitor having its first terminal connected to a point of connection of the second and third inductors; and a second parallel circuit which is connected across a second terminal of the capacitor and a ground, composed of a fourth inductor and a second switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the second switching element is in the OFF state. The phase-shifting circuit establishes by switching an operation mode of setting the first switching element at the ON state and the second switching element at the OFF state, or an operation mode of setting the first switching element at the OFF state and the second switching element at the ON state.
    • 一种移相电路包括:第一并联电路,其连接在高频信号的输入和输出端上,该第一并联电路由第一电感器和第一开关元件组成,该第一电感器和第一开关元件呈现导通状态的通态, OFF状态,并且当所述第一开关元件处于OFF状态时,以规定频率产生并联谐振; 串联电路,由第二电感器和第三电感器组成,并与第一并联电路并联; 电容器,其第一端子连接到第二和第三电感器的连接点; 以及连接在电容器的第二端子和地之间的第二并联电路,由第四电感器和第二开关元件构成,该第四电感器和第二开关元件呈现处于导通状态的通状态和处于断开状态的电容性质,并且产生并联 当第二开关元件处于断开状态时以规定频率进行谐振。 移相电路通过切换将处于导通状态的第一开关元件设定为OFF状态的操作模式,或者将第一开关元件设定为OFF状态的操作模式和第二开关元件 在ON状态。