Timeline for Low power amplifier for 433MHz wake up receiver
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 13, 2018 at 22:42 | comment | added | rbraddy | Will do once I have answers. | |
| Jul 13, 2018 at 21:51 | comment | added | Maple | Good luck! And post the results when you are done, please. Very curious how it turns out. | |
| Jul 13, 2018 at 21:49 | comment | added | rbraddy | I have enough to begin prototyping to research and validate various ideas and potential options. Thank you for all the help. | |
| Jul 13, 2018 at 20:43 | comment | added | rbraddy | What might work would be to have a “predetector” that can determine there’s a faint signal present in the passband (it made it through the bandpass filter on the front-end), down in the mud at -80 dBM or so, then use that predetection to enable a low-power amplifier like the MAX2634. This way, we only amplify when there’s someone knocking. This would increase the costs of detection and wake up but increases the sensitivity. That’s a way to leverage @maple suggestion. | |
| Jul 13, 2018 at 13:43 | comment | added | rbraddy | Yes. On the surface looks promising but the 4uA is shutdown mode, normal operation uses 40 to 70 mA. MMICs power consumption down into 4 mA range are available but nothing yet with low quiesce current with no input signal and sensitivity below -50 dBm. All I have found want -21 dBm or more input signal level. Thanks for continuing the hunt with me. | |
| Jul 13, 2018 at 6:23 | comment | added | Maple | Have you looked at MMIC devices, like BGA6130? 4 uA sounds promising | |
| Jul 12, 2018 at 0:56 | history | answered | rbraddy | CC BY-SA 4.0 |