Timeline for Is -3dB bandwidth defined for any type of transfer function?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 5, 2021 at 15:06 | comment | added | D.A.S. | Yes -3dB Voltage is always the “half-power breakpoint” so it is always relative to passband gain. | |
| Jul 5, 2021 at 14:55 | comment | added | Bimpelrekkie | Not directly related but say my gain at 0Hz had been 5dB...2 dB IF 0 Hz is what you define as "passband" (and for a lowpass filter in your question, this is the case) then yes, at the end of that passband the transfer would be 3 dB lower. So if the transfer is + 5 dB at 0 Hz then the edge is where the transfer is + 5 dB - 3 dB = + 2 dB. | |
| Jul 5, 2021 at 14:47 | comment | added | needbrainscratched | Not directly related but say my gain at 0Hz had been 5dB, then I would have been looking at 2dB for bandwidth right? | |
| Jul 5, 2021 at 14:37 | history | answered | D.A.S. | CC BY-SA 4.0 |