带通σ - δ调制的高效UHF d类功率放大器建模

2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO) Pub Date : 2017-07-01 DOI:10.1109/SINKHROINFO.2017.7997508

O. Varlamov, I. Chugunov

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引用次数: 16

摘要

σ - δ调制是一种利用非线性元件构建射频线性功率放大器的方法。它可以大大简化功率放大路径的结构，在这种情况下，功率放大路径应作为1位dac工作。初步建立了E、F、D(电压开关和电流开关)和脉冲门调制输出级的电位变化模型。结果表明，只有在具有电压开关的D类放大器中才能实现所要求的幅度特性线性度。这样的放大器可以用桥式或半桥式电路构成。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Modeling of efficiency UHF class-D power amplifier with bandpass sigma-delta modulation

Sigma-delta modulation is a method of constructing the radio frequency linear power amplifier with the using non-linear components. It can significantly simplify the structure of the power amplification path, which in this case shall operate as one-bit DACs. The preliminary modeling of potential different variants of the output stage in classes E, F, D (voltage switching and current switching) and the pulsed gate modulation was done. It is shown that the required linearity of amplitude characteristic can be realized only in the class D amplifier with voltage switching. Such an amplifier can be constructed in a bridge or half-bridge circuits.

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2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)

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