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
Jongsoo Lee, Jaehyuk Jang, Wooseok Lee, Bosung Suh, Heeyong Yoo, Beomyu Park, Jeongkyun Woo, Jaeeun Jang, Inhyo Ryu, Honggul Han, Jaeyoung Kim, Byoungjoong Kang, Minchul Kang, Hojung Kang, John Kang, Minseob Lee, Dan‐Bi Lee, Hyeonuk Son, S. Lee, Soyeon Kim, Hongjong Park, Sang-Sung Lee, Jeong‐Yeol Bae, Huijung Kim, Joon-Hee Lee, Sang-Min Yoo
Abstract
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).