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The Circuit of Active High-Pass Filter With Sharp Cutoff Per

2017-02-25 21:17  
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The Circuit of Active High-Pass Filter With Sharp Cutoff Performance (RC4558DN)
The Circuit of Active High-Pass Filter With Sharp Cutoff Performance (RC4558DN)
Active high-pass filter with sharp cutoff performance is shown in this circuit. To improve the frequency characteristic around cutoff frequency fc of high-pass filter, in this circuit a high-pass filter and a band-stop filter are connected in series to improve the frequency characteristic of the high-pass filter. The first stage in this circuit is band-stop filter consists of double-T network and load resistance R4, composing band-pass filter that gain descends in low frequency. To increase the value of Q, there is a bootstrapping at the end of the double-T network.