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    • 1. 发明申请
    • AMPLITUDE MODULATION CIRCUIT AND NON-CONTACT POWER FEEDING DEVICE
    • 振幅调制电路和非接触式电源馈电装置
    • US20140300197A1
    • 2014-10-09
    • US14242066
    • 2014-04-01
    • Funai Electric Co., Ltd.
    • Naoyuki Wakabayashi
    • H03C1/10H01F38/14
    • H03C1/10H01F38/14H02J7/025H02J50/12H03C7/02
    • An amplitude modulation circuit includes a resonance circuit powered by an oscillator and comprising a power transmission coil with a first coil portion, a second coil portion, a modulation coil, and a resonance condenser; and a switch that switches between a state where the first coil portion and the second coil portion are connected in series and a state where the first coil portion and the modulation coil are connected in series according to a level switching timing of transmission data and a timing when a coil current in the resonance circuit becomes zero. The combined inductance of the first coil portion and the second coil portion connected in series and a combined inductance of the first coil portion and the modulation coil connected in series are equal.
    • 振幅调制电路包括由振荡器供电并包括具有第一线圈部分的电力传输线圈,第二线圈部分,调制线圈和谐振电容器的谐振电路; 以及在第一线圈部分和第二线圈部分串联连接的状态之间切换的开关以及第一线圈部分和调制线圈根据发送数据的电平切换定时和时序连接的状态 当谐振电路中的线圈电流变为零时。 串联连接的第一线圈部分和第二线圈部分的组合电感以及串联连接的第一线圈部分和调制线圈的组合电感相等。
    • 2. 发明授权
    • Suppressed carrier modulator formed from two partial modulators each
including a phase delay path
    • 每个包括相位延迟路径的两个部分调制器形成的抑制载波调制器
    • US5153536A
    • 1992-10-06
    • US627632
    • 1990-12-14
    • Fred-Egon Muller
    • Fred-Egon Muller
    • H03C1/10H04L27/227H04L27/36
    • H04L27/362
    • A modulator suitable for 16 quadrature amplitude modulation (QAM) is designed as a double modulator (1), wherein a 16 QAM modulator (39) consists of two double modulators (1). One double modulator (1) has two partial modulators (1',1") forming a bridge. Each partial modulator (1',1") has two possible transmission paths: (6',6") with a phase delay line (39',39") which causes a 180.degree. phase shift. On each of the two paths (6',6", 7',7"), a semiconductor diode (D.sub.1 ',D.sub.1 ",D.sub.2 ',D.sub.2 ") is disposed in such a way that they provide the carrier (U.sub.c) with a 180.degree. phase inversion and are accordingly rendered conductive in unison, if no modulation voltage (U.sub.m) is applied, whereby the carrier is suppressed at the signal output (3'). When a modulation signal (U.sub.m) is applied, the balance is changed to push-pull, and one of the two paths (6',6") assumes less impedance compared to the other path (7',7"), which leads to the generation of the modulated carrier voltage (U.sub.mc). Through its design as a double modulator (1) such that the transmission path is realized respectively via an electrically short path (7',7") of one partial modulator (1',1") and via a phase delay path (6",6') of the other partial modulator (1',1") or conversely, differences in the two paths are averaged. The double push-pull modulator (1) is used in radio link systems. The modulator (1) can also be used as a mixer.
    • 适用于16正交幅度调制(QAM)的调制器被设计为双调制器(1),其中16QAM调制器(39)由两个双调制器(1)组成。 一个双调制器(1)具有形成桥的两个部分调制器(1',1“)。 每个部分调制器(1',1“)具有两个可能的传输路径:具有相位延迟线(39',39”)的(6',6“),其导致180°的相移。 在两个路径(6',6“,7”,7“)的每一个上,半导体二极管(D1',D1”,D2',D2“)以这样的方式设置, (Uc),并且如果不施加调制电压(Um),则相应地导通,从而在信号输出(3')处抑制载波。 当施加调制信号(Um)时,平衡被改变为推挽,并且两条路径(6',6“)中的一条与其它路径(7',7”)相比呈现较少的阻抗, 这导致产生调制载波电压(Umc)。 通过其作为双调制器(1)的设计,使得传输路径分别经由一个部分调制器(1',1“)的电短路径(7',7”)实现,并且经由相位延迟路径 6“,6”),或者相反地,两个路径中的差被平均。 双推挽调制器(1)用于无线电链路系统。 调制器(1)也可以用作混合器。