1. Ericsson White paper, , 5G radio access, Uen 284 23-3204 Rev C, April 2016.
2. 4G Americas White paper, , 5G spectrum recommendations, August 2016.
3. European Commission — Press release "Commission facilitates deployment of car radar systems to boost road safety,", Reference: IP/11/937, Date: 29/07/2011, http://europa.eu/rapid/pressrelease_IP-11-937_en.htm? Locale=en.
doi:10.1109/MMM.2010.938584 Google Scholar
4. Koelpin, A., G. Vinci, B. Laemmle, D. Kissinger, and R. Weigel, "The six-port in modern society," IEEE Microwave Magazine, S35-S43, December 2010. Google Scholar
5. Nedil, M., T. A. Denidni, and H. Boutayeb, "Ultra-wideband CPW six-port circuits based on multilayer technology," Electronics Letters, Vol. 43, No. 23, November 2007.
doi:10.1109/TMTT.2007.906539 Google Scholar
6. Bialkowski, M. E., A. M. Abbosh, and N. Seman, "Compact microwave six-port vector voltmeters for ultra-wideband applications," IEEE Transactions on Microwave Theory and Techniques, Vol. 55, No. 10, 2216-2223, October 2007.
doi:10.1109/JSTSP.2007.907414 Google Scholar
7. Sadler, B. M., D. Goeckel, M. L. Honig, A. J. Van Der Veen, and Z. Xu, "Introduction to the issue on performance limits of ultra-wideband systems," IEEE Journal of Selected Topics in Signal Processing, Vol. 1, No. 3, 337-339, October 2007.
doi:10.1002/mop.24144 Google Scholar
8. Boukari, B., E. Moldovan, R. I. Cojocaru, S. Affes, K. Wu, R. G. Bosisio, and S. Ovidiu Tatu, "A 77-GHz six-port FMCW collision avoidance radar sensor with baseband analytical calibration," Microwave and Optical Technology Letters, Vol. 51, No. 3, 720-725, March 2009. Google Scholar
9. Mallat, N. K. and S. O. Tatu, "Six-port receiver in millimeter-wave systems," International Conference on Systems, Man and Cybernetics, ISIC, 2007. Google Scholar
10. Martir, A. M. and I. M. Fernandez, "Six-port junction with complete UWB band coverage in multilayer technology," Proceedings of the 41st European Microwave Conference, Manchester, UK, October 10–13, 2011.
doi:10.1002/mop.25377 Google Scholar
11. Hammou, D., E. Moldovan, K, Wu, and S. O. Tatu, "60-GHz MHMIC six-port model analysis," Microwave and Optical Technology Letters, Vol. 52, No. 9, 2104-2108, September 2010. Google Scholar
12. Tatu, S. O., R. I. Cojocaru, and E. Moldovan, "Interferometric quadrature down-converter for 77 GHz automotive radar: Modeling and analysis," Proceedings of the 7th European Radar Conference, 125-128, Paris, France, September 30–October 1, 2010. Google Scholar
13. Hardtke, T., R. Richter, and H. J. Jentschel, "Six-port architecture based receiver for MB-OFDM UWB systems," International Conference on Next Generation Mobile Applications, Services and Technologies, NGMAST 2007, 2007. Google Scholar
14. Hammou, D., E. Moldovan, and S. O. Tatu, "Novel MHMIC millimeter wave power divider/combiner," IEEE CCECE 2011, Niagara Falls, Canada, 2011.
doi:10.1155/2013/686708 Google Scholar
15. Hannachi, C., D. Hammou, Z. Ouardirhi, and S. O. Tatu, "Complete characterization of novel MHMICs for V-band communication systems," Journal of Electrical and Computer Engineering, Vol. 2013, 1-9, 2013. Google Scholar
16. Askari, G. H. and M. Kamarei, "Distortion analysis of UWB short pulses using time-frequency distribution," IEEE 17th International Conference on Transparent Optical Networks (ICTON), Budapest, Hungary, July 2015.
doi:10.1109/JSTSP.2007.907414 Google Scholar
17. Sadler, B. M., D. Goeckel, M. L. Honig, A. J. van der Veen, and Z. Xu, "Introduction to the issue on performance limits of ultra-wideband systems," IEEE Journal of Selected Topics in Signal Processing, Vol. 1, No. 3, 337-339, October 2007. Google Scholar
18. Fernandes, J. R., H. B. Goncalves, L. B. Oliviera, and M. M. Silva, "A pulse generator for UWB-IR based on a relaxation oscillator," IEEE Transactions on Circuits and Systems-II, Express Briefs, 1-5, 2008. Google Scholar
19. Askari, G. H., M. Kamarei, M. Shahabadi, and H. Mirmohammad-Sadeghi, "Analysis, design and implementation of a broadband coaxial-to-micro strip for UWB radar," PIERS Proceedings, 972-977, Guangzhou, China, August 2014. Google Scholar
20. Pozar, D. M., Microwave Engineering, 4th Ed., John Wiley & Sons, Inc., 2012.
21. Raj Gopala Rao, B. V., K. Ch. Sri Kavya, K. Sarat Kumar, H. Khan, C. Manjari, Y. Sneha Priya, and G. Siva Sai Sudha, "An optimized design of wideband multi-section branch line coupler at Ka band," International Journal of Engineering Research and Applications (IJERA), Vol. 2, No. 5, 655-658, September–October 2012. Google Scholar