| 摘要 |
<p>Apparatus and method for use with a sampled input signal having an input sampling frequency Fs, including M digital filters (106-1 to 106-M), each receiving the input signal (104), each having a respective transfer characteristic hm(n) and each producing a respective output signal updated at the input sample rate Fs each m'th one of the filters updating its output signal in response to a respective m'th phase of the input sample clock, M ≥ 2. The apparatus and method then combine the output signals of the digital filters to produce a combined output signal having a sample rate of at least MFs. The apparatus and method may also be viewed as a hybrid digital/analog filter.</p> |
