Qi vs A4WP: War of the wireless charging standards
Qualcomm weighs in on the state of wireless charging - CNET
NFC transmitter coil placement to minimise degradation of A4WP wireless power transfer efficiency - Kang - 2017 - Electronics Letters - Wiley Online Library
NXP® Wireless Charging Solutions for Qi and A4WP | NXP Semiconductors
Two alliances team up to win the wireless charging war - The Verge
A4WP wireless charging module design and solutions | tradekorea
Wireless charging standards, Qi, Powermat, A4WP, what does it all mean and who will prevail? - PhoneArena
The Direction of Wireless Charging Technology - EEWeb
Rezence Resonance Charging & Closing Thoughts - The State of Wireless Charging Standards in Mobile
Alliance for Wireless Power (A4WP) Prepares to Bring Next Generation Wireless Power Technology to Consumer Electronics Marketplace; Meets Major Milestones in 2012; Sets Direction for 2013 and Beyond