April 28, 2024
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Frequency Response

Bandreject Filter

Problem #2

A radio receptor is often disrupted by 8 kHz whistle. Design a "whistle-stop" filter that has a bandwidth of 1 kHz and uses 33 nF capacitor.

b) The previous example is ideal and will completely eliminate the 8 kHz whistle. However, circuits are not ideal so let’s assume that the inductor has 2 Ω resistance and the source has 50 Ω resistance. If the filter specification calls for -18 dB, will the specification be met?

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