1. FCC (2003) First report and order, revision of the part 15 commission’s rules regarding ultra-wideband transmission systems, 98–153
2. Chen ZN (2007) Antennas for portable devices, 2nd edn. Wiley, New York
3. http://www.bluetooth.org
. Last accessed 9 Dec 2018
4. Bensky A (2000) Short-range wireless communications. LLH Technology Publishing
5. Balanis CA (2016) Antenna theory: analysis and design, 3rd edn. Wiley, Hoboken