A novel 5.1–7.1 GHz front-end power amplifier for wireless applications with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si10.svg" display="inline" id="d1e1558"><mml:mrow><mml:mo>−</mml:mo><mml:mn>35</mml:mn></mml:mrow></mml:math

A Power Amplifier (PA) is proposed for WiFi-6E applications, specifically designed to support WLAN 802.11ax standard to achieve significant linear power. The proposed PA is designed to operate in the entire 5 GHz and 6 GHz frequency bands. The design involves a two-stage configuration, initial stage adopts a linear driver, while the subsequent amplification stage is structured as a differential cascode. UMC 65 nm CMOS process technology is used to design a PA in commercial Cadence platform. The layout occupies core area of 0.24 mm 2 . Proposed PA delivers a power gain of 20 dB, Power Added Efficiency (PAE) of 19% and 1 dB compression point ( P 1 d B ) is of 24.5 dB is achieved for continuous wave (CW) signal. For the 802.11ax source, the recorded average power output ( P a v g ) is 17.1 dBm at an Error Vector Magnitude (EVM) ≤ -35 dB, across the 5–7 GHz. The PA delivers P a v g of 10 dBm at worst corner case in PVT variation analysis. While the majority of recent works in WLAN PA confines the investigation to 5 GHz band, this paper broadens the scope by extending the study by up to 7.050 GHz in 6 GHz band. The incorporation of 6GHz band enables WiFi-6E to utilize up to 1,200 MHz of unencumbered spectrum, significantly enhancing the available bandwidth relative to earlier WiFi standards. The increased bandwidth facilitates high data rate applications, such as streaming and gaming. • Power Amplifier for front end transmission is proposed for upcoming WLAN 802.11ax source (WiFi-6E). • Proposed amplifier works for WLAN frequency band from 5 GHz to 7 GHz (Dual-Band, 5 GHz and 6 GHz band). • Offers 20 dB gain and > 25 dBm saturated output power for CW signal. • Achieves 17.1 dBm average power output and EVM < -35 dB across 5 GHz and 6 GHz frequency band with decent PAE at power-backoff. • Proposed PA achieves consistent results for WLAN 802.11a,p,n,ac,and ax with signal PAPR more than 11 dB. • The proposed PA is implemented using UMC 65 nm CMOS technology and occupies a core area of 0.24 mm 2 . • One of the first studies conducted for entire 5 GHz and 6 GHz band in CMOS technology.