IoT M2M blog

The home of free hints and tips about wireless IoT / M2M

How an extrem compromise will look like? GSM module in a watch

Customisted antenna design example for GSM watch

  • Meandered monopole antenna

    GSM watch

    GSM watch

  • Type: Inverted F antenna on chip
  • Dualband GSM 900 / 1800
  • Tuning by extrem customisation
  • Size of antenna: Round shape with a diameter of estimated 30 mm
  • Size of whole PCB: 25 mm diameter

This GSM watch was planned for mass production.

Unique features of the GSM watch

  • Extrem small PCB small
  • Ultra small battery to drive the 2 Ampere peaks
  • Mechanical clock watch
  • Microphone for emergeny call

Does who want a small GSM application like a GSM watch, GSM /GPS tracker or wireless sensor should not hesitate to send an email to harald.naumann (at) gsm-modem.de EAD#

Updated: 2013-06-20 — 8:11 AM

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