by Harald Naumann | Nov 9, 2020 | FAQ
Which IoT protocol do I use? Very recently a significant new customer has asked us to design a combined LoRaWAN / Cellular (LTE-M/ NB-IoT) board. Cellular is pretty new. Q: I am currently selecting a suitable cellular modem. The idea is that we will run sensor...
by Harald Naumann | May 1, 2020 | FAQ
Which LPWAN do you use for an emergency call button? Register your interest for more on LPWAN designs in the upcoming LPWAN cookbook First of all, we have to establish whether the mobile emergency call button is to be used locally in a building, on a company campus,...
by Harald Naumann | Aug 19, 2019 | FAQ
Request for an NB-IoT PCB antenna LoRa Tag without an enclosure Another request for a custom PCB antenna for NB-IoT. Since we invested in NB-IoT early on, we can bring a lot of experience. Simply taking over a layout of an antenna for an unlicensed band like LoRaWAN...
by Harald Naumann | Aug 14, 2019 | FAQ
Can you fit NB-IoT into a matchbox? We received a request for an NB-IoT device in a matchbox. It is of course not an actual matchbox but similar in size. Small NB-IoT devices with batteries operating in the frequency range from 600 MHz to 1000 MHz are the premium...
by Harald Naumann | Dec 8, 2018 | Antenna
NB-IoT throughput V antenna gain Because a picture is worth a thousand words, here is the NB-IoT throughput table in a graph. With a 144 dB link budget (all the power gains and losses from transmitter to receiver), we will achieve a speed of 21 kbps. If the link...
by Harald Naumann | Aug 12, 2018 | Antenna
Does NB-IoT work underground? Shallow and deep indoor penetration with LPWAN is yesterday’s news. The new record for signal penetration through walls and floors was achieved in Munich on August 10, 2018 with NB-IoT. NB-IoT signal strength in the Munich subway Munich...
by Harald Naumann | Sep 4, 2017 | Antenna
The Journey to develop the Gillette order button Introduction In 2016, a creative team in Frankfurt had the idea of developing an IoT push button for ordering goods via a cellular module. In principle, something similar to the Amazon Dash button, except using a...
by Harald Naumann | Jul 29, 2017 | Antenna
Gillette Order Button versus Amazon Dash Button What is the main difference between the order button concepts? Cellular antenna design – oven-ready in the IoT/M2M Cookbook The Amazon button is based on Wi-Fi and will run when connected to the home Wi-Fi network....
by Harald Naumann | Jan 26, 2017 | Antenna
NB-IoT and band 70 – What is your view? RF engineers already know that signal propagation characteristics vary according to frequency. In simple terms, signals carried at lower frequencies travel further. Radio wave and wavelength – image credit Harald Naumann...
