+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Newbie level 2
    Points: 19, Level: 1

    Join Date
    Sep 2019
    Posts
    2
    Helped
    0 / 0
    Points
    19
    Level
    1

    Power harvester evaluation board and antenna issues

    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!

    •   AltAdvertisement

        
       

  2. #2
    Super Moderator
    Points: 260,253, Level: 100
    Awards:
    1st Helpful Member

    Join Date
    Jan 2008
    Location
    Bochum, Germany
    Posts
    45,445
    Helped
    13828 / 13828
    Points
    260,253
    Level
    100

    Re: Power harvester evaluation board and antenna issues

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

    - - - Updated - - -

    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.

    - - - Updated - - -

    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.



    •   AltAdvertisement

        
       

  3. #3
    Newbie level 2
    Points: 19, Level: 1

    Join Date
    Sep 2019
    Posts
    2
    Helped
    0 / 0
    Points
    19
    Level
    1

    Re: Power harvester evaluation board and antenna issues

    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



--[[ ]]--