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Recent content by r12624

  1. R

    Design of a Battery-free Wireless Sensor Node

    The lines influence the impedance seen at the input of the voltage multiplier in a significant manner (even though they are both physically and electrically small). I wanted that impedance to be as close to reality as possible, so that I would be able to design a good matching network (so...
  2. R

    Design of a Battery-free Wireless Sensor Node

    In the case of a TV signal I would say the best antenna would have a high gain and a bandwidth large enough to cover the intended frequency band Regarding the components, I think you will have to use SMD parts because typical components are hard to find Also, I would advise you to take into...
  3. R

    Design of a Battery-free Wireless Sensor Node

    Check this: www.media.mit.edu/~jrs/WISP-WARP.pdf
  4. R

    Design of a Battery-free Wireless Sensor Node

    5uA is the amount of current that the sensor node consumes while sleeping (this value corresponds to the sum of the quiescent currents, and was based on datasheet information) by the way, feel free to ask more questions
  5. R

    Design of a Battery-free Wireless Sensor Node

    Sure, the transmitter antenna was set to radiate 2Werp @ 866.6MHz (you can see the radio regulations here: RFID-Handbook - RFID-Frequencies).
  6. R

    Design of a Battery-free Wireless Sensor Node

    Hi everyone, In my MSc thesis I have developed a passive wireless sensor node that harvests the energy it needs from a nearby RF power source (basically just like passive RFID tags do). I would like to share this with you :-D Main characteristics: battery-free, ASK demodulator, backscatter...

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