5G Chipset Keeps RF Power Output Under Control
As 5G moves into millimeter waves and other high-frequency bands, consumer electronics makers are adding more antennas to their designs. But the extra antennas present a problem when it comes to meeting global standards for specific absorption rate (SAR) and accurately managing the device’s RF power output.
Semtech attempts to address the challenge with a new single-chip solution in its PerSe series called SX9376. The 5G chip, which has a maximum of eight sensor inputs to support several antennas at a time, is also compatible with a wide range of antenna designs. The chip is easy to integrate into 5G mobile devices via its I2C serial interface that can be upgraded to I3C.
The PerSe technology at the heart of the SX9376 senses the presence of humans in the vicinity and, thus, gives mobile phones and other 5G devices the ability to implement advanced RF control to boost 5G connectivity. The system can automatically adjust RF emissions, enabling mobile phones, tablets, and laptops to operate at peak performance while meeting SAR standards.
The high-resolution analog front end (AFE) inside the device improves its performance without burning through excess power. The chip also features advanced temperature correction to reduce false triggers caused by noise and temperature, according to the company. Operating temperature range is −40 to 85°C.
