Lm358 as an RF "amplifier" : possible ?

[Klodo]

Hello ,

can we amplify a small signal of 433Mhz by an amplifier based on an lm358 (which its 700khz of BW) ??
I got this question while watching this video (in the video the guy went even further than my question; he made it into a mobile phone wave detector) ;

Thank you in advance for your answers.

 

[bertus]

Hello,

No, the LM358 has only a bandwidth of 1 MHz, on 1 MHz the gain is only 1.
There is not even a selective circuit and RF detector shown.
It will respond to ALL RF signals very close by.

bertus

 

[Klodo]

Hello,

No, the LM358 has only a bandwidth of 1 MHz, on 1 MHz the gain is only 1.
There is not even a selective circuit and RF detector shown.
It will respond to ALL RF signals very close by.

bertus

Ok , i'ts good for me !
Thks

 

[bertus]

Hello,

If you want some more serious reading about RF detectors, have a look at the following pages:
https://www.maximintegrated.com/en/design/technical-documents/app-notes/5/5085.html
https://www.reddit.com/r/rfelectron...f_detector_circuit_for_listening_devices_and/

Bertus