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    • 1. 发明授权
    • LINEARIZATION ARRANGEMENT OF A POWER AMPLIFIER
    • 一种功率放大器的线性化安排
    • EP0953232B1
    • 2007-01-31
    • EP98947576.9
    • 1998-10-07
    • Nokia Corporation
    • PELLONPERÄ, Marko
    • H04B1/40
    • H03F3/191H03C3/08H03F1/32H03F1/34H03F3/24H03F2200/336H03F2200/451H04B2001/0433H04L27/368
    • A method of compensating delay in a linearization loop of a power amplifier and a linearization arrangement of a power amplifier, which arrangement comprises an I/Q modulator (10), one or more power amplifiers (13) to be linearized and generating delay, and a feedback loop comprising an I/Q demodulator (11) when the I/Q modulator (10) and the I/Q demodulator (11) derive an oscillator frequency from the same local oscillator (14). In accordance with the invention, the delay generated by the power amplifier in the feedback is compensated by delaying a local oscillator signal applied to the I/Q demodulator (11). The delay of the local oscillator signal applied to the I/Q demodulator (11) is generated by an amplifier optimized to have a great delay, preferably by a small-signal amplifier.
    • 一种补偿功率放大器的线性化环路和功率放大器的线性化装置中的延迟的方法,所述装置包括I / Q调制器(10),一个或多个待线性化并产生延迟的功率放大器(13),以及 当I / Q调制器(10)和I / Q解调器(11)从相同的本地振荡器(14)导出振荡器频率时,反馈回路包括I / Q解调器(11)。 根据本发明,通过延迟施加到I / Q解调器(11)的本地振荡器信号来补偿功率放大器在反馈中产生的延迟。 施加到I / Q解调器(11)的本地振荡器信号的延迟由优化为具有大延迟的放大器产生,优选地由小信号放大器产生。