1. W. Menzel and A. Moebius, Proc. IEEE 100, 2372 (2012).
2. L. Qin, Y. Lu, Q. You, et al., IEEE Trans. Veh. Technol. 67, 10574 (2018).
3. J. Zhou, H. Wang, J. Cao, et al., in Proc. Science and Wireless Technology Conf. (CSQRWC), Taiyuan, July 18–21, 2019 (IEEE, New York, 2019), p. 8799118.
4. R. Y. Hermansyah, F. Y. Zulkifli, and E. T. Rahardjo, in Proc. Progress in Electromagnetic Research Symp., Shanghai, Aug. 8–11, 2016 (IEEE, New York, 2016).
5. S. R. Rengarajan and M. Steinbeck, in Digest 1991 Antennas and Propagation Soc. Int. Symp., Canada, Ontario, June 24–28, 1991 (IEEE, New York, 1991), Vol. 2, pp. 1276–1279.