Category: M2M FAQ, hints, tips

In which frequency bands will LTE-M and NB-IoT operate in DACH?

NB-IoT LTE-M frequency bands

Q: I have a question before I start my development. I seem to remember that you mentioned in an email that we need more bands for LTE-M. Are frequency band 8 and 20 not enough? The answer about frequency bands for LTE-M and NB-IoT in DACH A: The question about frequency bands for LTE-M / […]

IoT M2M Cookbook – The outlook for embedded antenna design

GSM PCB antenna simulation

The IoT M2M Cookbook contains a simulation of a dual F antenna for cellular. This antenna has been customized several times by customers, or by us on behalf of customers. The Gillette order button using this base design and described in the book supports NB-IoT, LTE-M and GSM from about 750 MHz with 960 MHz […]

NB-IoT and Sigfox comparison – number of operators in Germany and the States

Cellular operators versus Sigfox in US

In order to minimize the risk, the developers of IoT devices try to avoid single source components and services. For microcontrollers and radio modules it becomes difficult, but mostly similar components from different manufacturers are used. The LPWAN technology has to be chosen sooner or later. NB-IoT and LTE-M are offered by different network operators […]

LPWAN gateway on a farm in Australia – diffraction of radio wave

LPWAN with diffraction in detail

When a rectilinear radio wave hits an edge, it changes its course. This effect is called diffraction. By diffraction, we understand a bending effect during the propagation of electromagnetic and acoustic waves. The diffraction causes a change from the straight-line propagation of the waves and occurs at obstructions, mountains or buildings. A simple, free simulation […]

LPWAN gateway in the middle of the North Sea – Fresnel zone

LPWAN Helgoland radio link on 169 m and 1 m mast

Low frequencies in the 900 MHz range are a blessing and a curse for LPWAN. The low frequencies spread further in the open field and penetrate the walls of buildings better. But the curse of the low frequencies is the much wider Fresnel zone. To ensure undisturbed transmission, the space between the transmitter and receiver […]

NB-IoT and Sigfox comparison – number of base stations / gateways

In order to understand why more base stations automatically represent a better network, some explanations are necessary. Sigfox has planned 2400 gateways for Germany. These 2400 gateways are confronted with 24,000 LTE base stations from Vodafone and approximately the same amount from Deutsche Telekom. These 48,000 LTE base stations do not all need to be […]