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complex filter from lpf

时间:04-12 整理:3721RD 点击:
why Complex Filter use I and Q input?
what is the difference between complex filter and common LPF?

The total noise at baseband is sum of noise at "POSITIVE" and "NEGATIVE" frequencies. If you work at baseband there is no way of separating these. By I and Q sampling you will be able reduce the effects.

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