How to generate DC voltage from the received RF signal?

[danda821]

RF to DC generator

I am wondering if there is any efficent way to generate DC voltage from the received RF signal. Thanks.

 

[aryajur]

Re: RF to DC generator

I think select the strongest station, rectify it and filter the DC component. Maybe try something like a charge pump with parallel such circuits to get more power.

 

[snake]

Re: RF to DC generator

but you need the DC to make what ????
to power something or to mesure de power in RF ????????

 

[biff44]

Re: RF to DC generator

**broken link removed**

 

[danda821]

Re: RF to DC generator

I know this circuit. It works. But the efficiecy is very low, around 10-15%, it depends on the received RF frequency ( the higher the worse).