| 摘要 |
A bandpass amplifier for use in a communication system is described. The amplifier includes a filter, a quantizer, a driver, and a feedback loop. The filter filters the input signal, thereby generating a filtered signal. The quantizer quantizes the filtered signal into one of two values, thereby generating a quantized signal. The driver amplifies the quantized signal, thereby generating the output signal. The feedback loop feeds the output signal to the filter. The quantizer has characteristics in which the quantized signal does not fluctuate between the two values when the input signal is substantially stable.
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