Antenna requirements for an IoT device using nRF9160 are summarized in the following table. The listed requirements apply to all frequencies supported by the IoT device.
| Parameter | Requirement | Note |
|---|---|---|
| 50 Ω impedance, antenna Voltage Standing Wave Ratio (VSWR) | <2:1 | Recommendation |
| <3:1 | Absolute requirement | |
| 50 Ω impedance, antenna Return Loss (RL) | >9.5 dB | Recommendation |
| >6.0 dB | Absolute requirement | |
| Efficiency | >50% | Recommendation. Operators may have other efficiency requirements. |
| Maximum gain | 1 | |
| Maximum input power | 1 W |