A 2.4-GHz 20-40-MHz Channel WLAN Digital Outphasing Transmitter Utilizing a Delay-Based Wideband Phase Modulator in 32-nm CMOS. - Ashoke Ravi; Paolo Madoglio; Hongtao Xu; Kailash Chandrashekar; Marian Verhelst; Stefano Pellerano; Luis Cuellar 001; Mariano Aguirre-Hernandez; Masoud Sajadieh; J. E. Zarate-Roldan; Ofir Bochobza-Degani; Hasnain Lakdawala; et al. (IEEE J. Solid State Circuits, 2012)