[SOLVED] How to make an RF Signal Harvesters

Sir/Mam,

We have a project called RF Signals Harvester! The idea is collecting Radio Frequency and convert it to DC Voltage and our main objective is to used this as a charger of different gadget(ex. cellphone, tablet etc)! We conduct a research and its possible! In fact, there a company selling this kind of device!

Here is the link!
https://www.powercastco.com/products/development-kits/

Can someone give me idea to make this kind of device!

Re: RF Signal Harvesters!

This has been discussed here many times.

The link you show is for harvesting power from a transmitter located very close to it. In my pocket I carry I carry an RFID tag which has no battery or other source of power. When I approach my house the gates autromatically open for me. The RFID tag is powered by harvesting energy from a transmitter mounted on the gate. Mine uses a lower frequency but the link shows a unit working at 915MHz.

What you must understand is the energy isn't 'free', you have to produce it nearby, typically within a few metres and pick some of it up to power the circuit. If you take the transmitter away and try to use radio waves present natuarally or from other man-made sources, the amount you will harvest is only a few microwatts unless you are located VERY close to a powerful radio/TV station and it will not be enough to use for a practical application like a charger.

Brian.

Re: RF Signal Harvesters!

What specific Thread should i look to find the past discussion about my topic! Thanks in Advance!

Re: RF Signal Harvesters!

Type "harvesting" in the search box at the top right corner of the Edaboard page.

Brian.