1. Northwest University, Northwest University IoT Research Center, International Joint Research Centre for the Battery-Free IoT Xi'an, China
2. Macquarie University, Sydney, Australia
3. University of Leeds, Alan Turing, Institute Leeds, United Kingdom
4. University of Leeds, Leeds, United Kingdom
5. Xi'an University of Posts and Telecommunications Xi'an, China
6. Xidian University, Xi'an, China