IoT M2M blog

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

Category: M2M FAQ, hints, tips

How to connect your embedded antenna with your wireless module? EA#

Transmission line: The PCB track between GSM module and embedded antenna PCB trace impedance / transmission line calculators If there is no coaxial cable between your antenna and the GSM module then there is often a PCB track. A coaxial cable has an inner conductor, an isolator and a shielding. GSM modules or other wireless […]

WIFI for creating the IoT?

In the video they mention public #WIFI e.g. at airports. At Mobile World Congress #MWC 2013 WIFI had its one zone. If WIFI will rise in public locations like airports and railway stations it will rise in industrial applications as well. WIFI in IoT – practical paradigm I already guideline the development of applications where […]

Which radio approvels has your M2M device to pass? EA#

The table with radio approvals is not complete. Testing for world region Reference Type of testing Specifiaction Notes Europe R&TTE Directive Article 3.2 Mobile Communication – Radiated Spurious Emission 2G EN 301 511 POS terminal, People tracker, Electricity meter Europe R&TTE Directive Article 3.2 Radio – Radio test EN 300 220 – Transceiver (Tx, Rx […]

How will the ground plane effect your embedded antenna? EA#

The size of the ground plane of your embedded antenna will effect the performance In the introduction it was mentioned that the enclosure and the components close to the embedded antenna like battery or display will interfere. The size of your PCB will have an effect of the performance of your selected embedded antenna as […]

50 ANT slaves talking to one ANT master – ANT vers BLE Part 1

How to connect 50 ultra low power slaves to one master? Bluetooth Low Energy is limited because each wireless slave connected to the master will charge RAM. Nevertheless, Bluetooth Low Energy is just one 2400 MHz technology out of several others. In comparison to Bluetooth Low Energy a technology called ANT charges much less RAM. […]

Comparsion of Bluetooth Low Energy – BLE – Bluetooth Smart ICs

BLE = Bluetooth Low Energy = Bluetooth Smart = a part of Bluetooth 4.0 Competitor vers. nRF51 (left side third party / right side nRF51 for my application) Switch Mode Power Supply & Linear regulators/ ditto Not supported / Individual power management for all peripherals inside the IC 1 x 10-bit ADC / 8/9/10 bit […]

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