antenna input voltage amplification @433MHz

Hi,
Is there a way to amplify the input voltage from an antenna that receives 433MHz signal, using opamps i.e TLV2402 or 741?

Does anyone knows a place in UK were its possible to buy Linear RF Power Amplifier ?

micael said:

Hi,
Is there a way to amplify the input voltage from an antenna that receives 433MHz signal, using opamps i.e TLV2402 or 741?

Click to expand...

No!.

Does anyone knows a place in UK were its possible to buy Linear RF Power Amplifier ?

Click to expand...

Plenty of places, but you need to be licenced!.

In the first question - if you are asking if you can amplify the signals received by an antenna the answer is yes and it is called a pre-amplifier. If you want to increase the power going out of the antenna then Nigel's answers apply.

An old 741 opamp can deliver full output at frequencies lower than only 9kHz.

Have a look here:
https://www.electro-tech-online.com/threads/rf-amplifier.21123/
for a suitable 432Mhz pre-amp.

JimB

Hi micael. Have a look at this: https://www.linxtechnologies.com/in...ts&category=rf_modules&subcategory=bba_series

It's the BBA-332.

I used this little pre-amp in a 900MHZ analog mic project, and it more than doubled the range. It has a +20dB gain and a gain flatness of +-2dB from 100MHZ to 2GHZ, so it should work well with 433MHZ.

Although I'm not sure exactly how impedance matching works in regards to antennas and rx/tx, it has a 50 ohm input and output.

It's about $10 on digikey. and best of all, it can't get much simpler!