Performance of the Nordic Thingy:91™ antenna has been measured in an environment as close to an actual use case as possible, where Nordic Thingy:91 typically is standalone and battery operated.
The table below shows basic average performance data of the antenna.
| Technical features | 698–748 MHz | 746–803 MHz | 791–849 MHz | 824–894 MHz | 880–960 MHz | 1575 MHz | 1710–2220 MHz |
|---|---|---|---|---|---|---|---|
| Average efficiency | 9.2% | 12.6% | 15.8% | 18.5% | 11.1% | 39.8% | 47.4% |
| VSWR (voltage standing wave ratio) | < 3:1 | ||||||
The figure below shows the antenna efficiency curves for each individual tuning path for LTE frequencies.
The different tuning paths used for the LTE frequencies give best antenna efficiency in one part of the frequency band. By defining the frequency switching in a way that ensures the next range taking over once the performance of the current range starts declining, the overall antenna efficiency can be improved.
Figure below shows the antenna efficiency for the Global Positioning System (GPS) band and the neighboring frequencies.
