Trainers. GSM antenna  Monopole  Yagi Functionality  Monopole antenna’s signal strength was - 80dbm  Yagi antenna’s signal strength was 70dbm  Better.

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Presentation transcript:

Trainers

GSM antenna  Monopole  Yagi

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

Learning points  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)

Reflections  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

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

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

Reflections  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

Q&A Thanks!