Power harvester evaluation board and antenna issues

[Wow_01]

Hi,

I am trying to learn about power harvesting by using a simple evaluation board. When I bought it, it came with its own antenna but I want to use another one. The issue lies here, the board can only handle 915-930 MHz, higher frequencies and it can be destroyed of course. This is a very small range so here comes the question. Can I use an amplifier between the antenna and the board? If yes, how should I think? For example, if I buy a 700 MHz antenna, what amplifier should I use to reach 915 or the maximum value (maybe there is a way to calculate the right amplifier value)?. Are there other methods besides this one?

I am a newbie so please consider it.

Thanks in advance!

 

[FvM]

Are you serious? Using an amplifier with energy harvesting? Did you understand the basic idea?

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Energy harvesting is intended to supply ultra low power systems from a power source present in the environment, e.g. vibration, heat flow, RF radiation. Using an amplifier for the "harvested" RF means to loose more power than you gain.

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Receiving most of the incident power from a particular RF source requires a tuned antenna and matching circuit. It can be surely redesigned for a different frequency.

 

[Wow_01]

Well, I am trying to learn so sorry about that....
Okay, thanks for the explanation! Basically, tuning the antenna then. We thought an amplifier could work but now we know why not. Thanks