4.2 A Tri-Band Dual-Concurrent Wi-Fi 802.11be Transceiver Achieving -46dB TX/RX EVM Floor at 7.1GHz for a 4K-QAM 320MHz Signal

The Wi-Fi 7 standard (IEEE 802.11be) was developed to meet the growing need for increased capacity and high throughput. However, the new, more demanding requirements for RF/analog circuits, including an extended bandwidth of 320MHz with 4K-QAM, result in increased complexity in circuit design to address issues of linearity, noise, bandwidth, and power consumption. Despite these challenges, Wi-Fi 7 promises faster and more reliable wireless connectivity. This paper presents a Wi-Fi 7 transceiver that demonstrates excellent linearity with the smallest power consumption among state-of-the-art transceivers listed in the comparison table (Fig. 4.2.6), operating at up to 7.1GHz with a 320MHz bandwidth. Figure 4.2.1 illustrates the Wi-Fi transceiver, which consists of two identical tri-band transceivers and local-oscillator (LO) generation circuits with three phase-locked loops (PLLs) to support various operation modes, including a real simultaneous dual-band (RSDB), and an enhanced multi-link single radio (EMLSR) of 2.4GHz+5GHz (or 6GHz).