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    • 3. 发明申请
    • NEAR FIELD RF COMMUNICATORS AND NEAR FIELD RF COMMUNICATIONS-ENABLED DEVICES
    • 近场RF通信器和近场RF通信启动设备
    • WO2008065375A2
    • 2008-06-05
    • PCT/GB2007/004524
    • 2007-11-27
    • INNOVISION RESEARCH & TECHNOLOGY PLCBANGS, JoakimMILES, David
    • BANGS, JoakimMILES, David
    • H04B5/02H04B5/0062H04B5/0081
    • A near field RF communicator has an antenna circuit (120) to receive a modulated radio frequency signal by inductive coupling; and demodulation circuitry (130, 131 or 132) to extract the modulation from a received modulated radio frequency signal inductively coupled to the antenna circuit. The demodulation circuitry has a first modulated signal input (118) to receive a first modulated radio frequency signal from a first output (J2) of the antenna circuit and a second modulated signal input (119) to receive a second modulated radio frequency signal from a second output (Jl) of the antenna circuit. The demodulation circuitry extracts modulation from a received modulated RF signal using both the first and second modulated radio frequency signals. The demodulation circuitry may have a differential amplifier and a demodulator or may have one or more differential mixers.
    • 近场RF通信器具有通过电感耦合接收调制射频信号的天线电路(120); 和解调电路(130,131或132),用于从接收到的与天线电路耦合的调制射频信号中提取调制。 解调电路具有第一调制信号输入端(118),用于接收来自天线电路的第一输出端(J2)的第一调制射频信号和第二调制信号输入端(119),以接收第二调制射频信号 天线电路的第二输出(J1)。 解调电路使用第一和第二调制射频信号,从接收的调制RF信号中提取调制。 解调电路可以具有差分放大器和解调器,或者可以具有一个或多个差分混频器。
    • 10. 发明申请
    • NEAR FIELD RF COMMUNICATORS
    • 近场射频通信器
    • WO2009013495A2
    • 2009-01-29
    • PCT/GB2008/002528
    • 2008-07-23
    • INNOVISION RESEARCH & TECHNOLOGY PLCBANGS, JoakimBUTLER, Paul
    • BANGS, JoakimBUTLER, Paul
    • H04W4/008H04B5/00H04B5/0031H04B5/0081H04W4/80
    • A near field RF communicator has an inductive coupler (102) to couple inductively to an H field of an RF signal from another near field RF communicator in near field range to provide a received signal, a demodulator (300) coupled to extract any modulation from a source signal representing a received RF signal to provide an extracted modulation signal; and a controller (107) coupled to receive an extracted modulation signal from the demodulator. The demodulator (300) has a sampler (400) to sample the source signal in sampling periods and to compare signal samples with at least one of other signal samples and a clock or reference signal to remove or reject the carrier of the received RF signal and to extract the modulation.
    • 近场RF通信器具有电感耦合器(102)以感应耦合到来自近场RF范围内的另一近场RF通信器的RF信号的H场,以提供接收信号,解调器( 300),用于从表示接收的RF信号的源信号中提取任何调制,以提供提取的调制信号; 和控制器(107),其被耦合以从解调器接收所提取的调制信号。 解调器(300)具有采样器(400),以采样周期对源信号进行采样,并将信号采样与其他信号采样中的至少一个和时钟或参考信号进行比较,以移除或拒绝接收到的RF信号的载波,以及 提取调制。