@article{frequencybasedultrasonicbackscatter,
  title = {Frequency-based Ultrasonic Backscatter Modulation for Passive Sensing Applications},
  author = {Muhammad Junaid Akhtar and Alp Timucin Toymus and Kivanc Esat and Levent Beker},
  year = {2021},
  eprint = {2109.10398},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2109.10398v1},
}