RADIO FREQUENCY TRANSMITTER AND METHOD OF OPERATING A RADIO FREQUENCY TRANSMITTER
    1.
    发明公开
    RADIO FREQUENCY TRANSMITTER AND METHOD OF OPERATING A RADIO FREQUENCY TRANSMITTER 审中-公开
    FUNKFREQUENZSENDER UND VERFAHREN ZUM BETRIEB EINES FUNKFREQUENZSENDERS

    公开(公告)号:EP1619848A1

    公开(公告)日:2006-01-25

    申请号:EP04291852.4

    申请日:2004-07-21

    Applicant: Evolium S.A.S.

    Inventor: Schütz, Thomas

    CPC classification number: H04L27/364 H03C3/406 H04W52/0229 Y02D70/1222

    Abstract: The present invention relates to a radio frequency transmitter (1) comprising an I/Q modulator (2) for obtaining a modulated output signal (2a) from an in-phase signal (I) and a quadrature phase signal (Q), and an I/Q modulator control loop (3b, 3c) controlling (130) said I/Q modulator (2), characterized by an activation switch (3a) capable of activating/deactivating said I/Q modulator control loop (3b, 3c).
    The present invention also relates to a method of operating a radio frequency transmitter (1) comprising an I/Q modulator (2) for obtaining a modulated output signal (2a) from an in-phase signal (I) and a quadrature phase signal (Q), an I/Q modulator control loop (3b, 3c) controlling (130) said I/Q modulator (2), characterized by activating (120) said I/Q modulator control loop (3b, 3c) if a suitable calibration signal is supplied to said transmitter (1).

    Abstract translation: 本发明涉及一种射频发射机(1),其包括用于从同相信号(I)和正交相位信号(Q)获得调制输出信号(2a)的I / Q调制器(2) 控制(130)所述I / Q调制器(2)的I / Q调制器控制环路(3b,3c),其特征在于能够激活/去激活所述I / Q调制器控制环路(3b,3c)的激活开关(3a)。 本发明还涉及一种操作射频发射机(1)的方法,该射频发射机(1)包括用于从同相信号(I)和正交相位信号(I)获得调制输出信号(2a)的I / Q调制器(2) 控制(130)所述I / Q调制器(2)的I / Q调制器控制回路(3b,3c),其特征在于如果适当的校准(120)激活(120)所述I / Q调制器控制回路(3b,3c) 信号被提供给所述发射器(1)。

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