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Broadcom Announces BCM4389 Wi-Fi 6E Client Chipset

The Wi-Fi Alliance announced the new Wi-Fi 6E terminology for 802.11ax operation in the 6 GHz band last month. At CES 2020, Broadcom announced a number of Wi-Fi 6E access point solutions. Today, Broadcom is announcing the BCM4389 client Wi-Fi 6E chipset. From a report: Consumers can expect to see the chipset in the next generation of high-end smartphones. We have already covered the advantages of Wi-Fi 6E in terms of lower latency, higher throughput, and the availability of more number of 160 MHz channels in our coverage of the Wi-Fi Alliance announcement at CES. The BCM4389 builds upon Broadcom's success with the BCM4375, which happens to be the currently leading client Wi-Fi 6 chipset in the smartphone market. In addition to the new 6 GHz support with tri-band simultaneous operation and 160 MHz channel support, the BCM4389 also brings in additional power efficiency, thanks to its 16nm process technology and architectural improvements.

The BCM4375 is a 28nm chipset with 2x2 2.4 GHz and 2x2 5 GHz support, while the new BCM4389 adds 2x2 6 GHz to the mix. The scanning radio accounts for the additional radio chain. The Bluetooth 5.0 functionality has also received a boost with MIMO support. Broadcom claims that the new implementation can reduce pairing time by a factor of 2 and also alleviate glitching issues when connected to Wi-Fi at the same time (compared to the BCM4375). The icing on the cake is that the MIMO support works with implicit beamforming ensuring that legacy Bluetooth devices stand to benefit too.


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