Because a picture is worth a thousand words, as promised here is the NB-IoT throughput table in a graph. At a 144 dB link budget, we will reach 21 kbps. If the link budget is even higher, the transmission power will be reduced. The 3 coloured curves show the 3 operating modes of NB-IoT. The […]
NB-IoT has a very high throughput at the top end. At the lower end it is faster than other LPWA techniques. For LoRaWAN, Weightless and NB-IoT the distance and the data throughput also regulate the speed. In this lecture we will only consider NB-IoT due to the limited talk time. At first glance, the table […]
In 60 minutes, we’ll explain antenna design basics. Questions during the presentation are welcome as well as at the end of the presentation when I have allowed time for questions and answers.
As many people have asked for a video stream of my presentation, I am now publishing the presentation with text. This will take a while to complete, but I have made a start with slides 7 to 9 published in my blog. Self Made Embedded Antenna Designs versus Chip Antenna My name is Harald Naumann […]
There is no reference for antennas on extremely small boards in small packages. Cellular chip antennas of different manufacturers all have a reference ground plane of approx. 45 mm +/- 10 mm x 100 mm +/- 20 mm. Nobody can cheat the physics. The length of the PCB influences the return loss. This is documented […]
As the question about the costs and the procedure for the matching of antennas frequently occurs, we have described the process and explained it with some examples of projects. To estimate the costs, the answers to the following questions are necessary. Standard questions on antenna matching: Which radio modules were used? How many radio modules […]
15th. November 2018, Munich, Germany Time 17:00 – 18:00 Session/Workshop Speaker: Roger Denker, MegiQ BV Language: English Registration (soon): https://www.wireless-congress.com/home.html In 60 minutes you will learn how easy it is to use a PC-based Vector Network Analyser (VNA) made by MegiQ. Examples to be presented at the Antenna Tutorial Part 1 will include live measurements […]
Wireless Congress: Systems & Applications 15th. November 2018, Munich, Germany Time: 16:00 – 17:00 Session/Workshop Speaker: Harald Naumann, tekmodul Language: English Registration: https://www.wireless-congress.com/home.html The wireless Internet of Things has a need for inexpensive wireless modules and antennas. An NB-IoT module will cost less than US$ 6 for a 1K unit order. A self-made NB-IoT antenna […]
The antenna design in this LoRa-Tag is based on the application note for the Texas Instruments DN038. The customer’s project objective was to match the antenna to the European 868 MHz band without changing the structure. Text excerpt from the TI application note “There are several ways to tune an antenna to achieve better performance. […]
The antenna is always the key to success for your wireless application. Each antenna has its benefits and drawbacks. The selection of the right antenna at beginning of a development project, or if you are planning the development of a device around the antenna, could save you a lot of money. A: Vertically polarised monopole […]