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    COMMUNICATION APPARATUS
    1.
    发明公开
    COMMUNICATION APPARATUS 审中-公开
    通信设备

    公开(公告)号：EP2824843A4

    公开(公告)日：2015-03-25

    申请号：EP12870779

    申请日：2012-07-26

    Applicant: PANASONIC CORP

    Inventor： MORIMOTO SHIGERU

    IPC: H04B1/59 ,  G06K7/10 ,  G06K19/07 ,  H04B1/40 ,  H04B5/00 ,  H04B5/02

    CPC classification number: H04B5/0062 ,  G06K7/10009 ,  G06K19/0715 ,  G06K19/0726 ,  H04B5/0075

    Abstract: An RFID tag (1) includes an antenna coil (111) configured to transmit and receive a signal through near field communication, a signal processing circuit (121) configured to process the signal transmitted and received by the antenna coil (111), a capacitive element (112) arranged in series between the antenna coil (111) and the signal processing circuit (121), and a control unit (122) configured to control the capacity value of the capacitive element (112). The control unit (122) changes the capacity value of the capacitive element (112) according to whether a voltage is applied from an external power supply.

    AMPLIFIER, INFORMATION COMMUNICATION APPARATUS AND AMPLIFYING METHOD
    2.
    发明公开
    AMPLIFIER, INFORMATION COMMUNICATION APPARATUS AND AMPLIFYING METHOD 审中-公开
    AMP，信息通信设备加固工艺

    公开(公告)号：EP1744449A4

    公开(公告)日：2009-03-18

    申请号：EP05736644

    申请日：2005-04-27

    Applicant: PANASONIC CORP

    Inventor： MORIMOTO SHIGERU ,  ADACHI HISASHI ,  MATSUURA TORU

    IPC: H03F1/32 ,  H03F1/02 ,  H03F3/24 ,  H04B1/04 ,  H04L27/00 ,  H04L27/36

    CPC classification number: H04L27/361 ,  H03F1/02 ,  H03F1/32 ,  H03F3/24

    Abstract: Conventionally, the circuit scale and cost were increased so as to significantly reduce the distortion of modulated signals of amplifiers. An amplifier comprising a modulation encoder (101) that receives an original modulated signal and generates an amplitude signal and a phase signal; voltage adjusting means (110) for generating from the amplitude signal an amplitude modulated signal; a carrier generator (102) for generating from the phase signal a phase modulated signal; and an amplifying element (106) that receives the phase modulated signal, also receives, as a bias voltage, the amplitude modulated signal, and outputs a modulated signal obtained by reconstructing and amplifying the original modulated signal; wherein the voltage adjusting means (110) decides, based on a level control signal indicative of the level of the amplitude modulated signal, a DC offset voltage, and generates an amplitude modulated signal in which the DC offset voltage has been added.

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