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    • 8. 发明授权
    • Diode modulator for radio frequency transponder
    • 射频应答器二极管调制器
    • US5606323A
    • 1997-02-25
    • US521898
    • 1995-08-31
    • Harley K. HeinrichDaniel J. Friedman
    • Harley K. HeinrichDaniel J. Friedman
    • H04B1/59G01S13/75G06K19/07H04Q1/18
    • G06K19/0701G06K19/0723G01S13/758
    • A diode modulator which is not part of the rectifier power supply circuit of an RF Transponder is controlled by the transponder electronic logic and memory circuitry to conduct RF current from a second terminal to a first terminal of the RF Transponder antenna in a first state of the transponder electronic circuitry, and does not conduct appreciable current in a second state of the transponder electronic circuitry, thereby changing the loading of the RF Transponder antenna between the first state and the second state of the transponder electronic circuitry, and thereby changing the intensity of the RF radiation backscattered from the RF Tag. The present invention has further advantages that the same diode used as a modulator can also be used in the transponder receiver circuit.
    • 不是RF转发器的整流器电源电路的一部分的二极管调制器由应答器电子逻辑和存储器电路来控制,以将RF电流从RF转发器天线的第二端子传导到第一状态 应答器电子电路,并且在应答器电子电路的第二状态下不会导致明显的电流,由此在应答器电子电路的第一状态和第二状态之间改变RF应答器天线的负载,从而改变 RF辐射从RF标签反向散射。 本发明还具有用作调制器的相同二极管也可用于应答器接收器电路中的另外的优点。