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Data converter, signal generator, transmitter and communication apparatus using the data converter or the signal generator, and data conversion method
Data converter, signal generator, transmitter and communication apparatus using the data converter or the signal generator, and data conversion method
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机译:使用该数据转换器或信号发生器的数据转换器,信号发生器,发射机和通信设备以及数据转换方法
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摘要
A data converter arranged to enable linear high-efficiency amplification of a signal having a fluctuating envelope. The data converter has a computation circuit, a vector quantizer, and an output terminal. The computation circuit is formed by connecting n (n: a natural number) number of unit circuits each including a vector subtracter having a first input terminal and a second input terminal, and a vector integrator connected to an output side of the vector subtracter. An output at the output terminal and/or an output from each vector integrator are input to the vector subtracter through the second input terminal in the corresponding unit circuit. The vector subtracter outputs data obtained by subtracting a vector input through the second input terminal from a vector input through the first input terminal. The vector quantizer outputs a predetermined value quantized at least with respect to the magnitude of the input vector.
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