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Trainers

Trainers. Monopole Yagi. GSM antenna. Monopole antenna’s signal strength was -80dbm Yagi antenna’s signal strength was 70dbm Better than the stock GSM antenna. Functionality. Learnt how to construct a GSM antenna Learnt how to solder

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Trainers

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  1. Trainers

  2. Monopole • Yagi GSM antenna

  3. Monopole antenna’s signal strength was -80dbm • Yagi antenna’s signal strength was 70dbm • Better than the stock GSM antenna Functionality

  4. Learnt how to construct a GSM antenna • Learnt how to solder • Learnt what materials go into a GSM antenna and what components to buy (or not to buy) Learning points

  5. Interesting experience • Had to go to Sim Lim Tower multiple times to get the correct materials, effort was not wasted • Surprised that our Yagi antenna worked so well even though we did not use a copper base Reflections

  6. Does not work (yet) • Lacks the code required for the GSM antenna to interpret the commands sent via the Arduino board • Transmitting signals works Level shifter

  7. How to interpret datasheets • How to construct the level shifter using the Max232 IC • How to use a CRO to monitor data transmission Learning points

  8. Disappointed it did not work • Need more time to figure out the code • Will be putting some extra time during holidays to make it work Reflections

  9. Q&A Thanks!

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