A Review on Terahertz Communications Research
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The increasing demand of unoccupied and unregulated bandwidth for wireless communication systems will inevitably lead to the extension of operation frequencies toward the lower THz frequency range. Higher carrier frequencies will allow for fast transmission of huge amounts of data as needed for new emerging applications. Despite the tremendous hurdles that have to be overcome with regard to sources and detectors, circuit and antenna technology and system architecture to realize ultrafast data transmission in a scenario with extensive transmission loss, a new area of research is beginning to form. In this article we give an overview of emerging technologies and system research that might lead to ubiquitous THz communication systems in the future.
KeywordsTerahertz communications Ultra-broadband short-range indoor communication systems Long-range outdoor communication systems THz modulators Ray tracing Channel modelling Uni-travelling-carrier photodiodes Schottky barrier diodes THz antennas THz transmitters THz receivers
The author (TKO) would like to thank C. Jastrow, K. Münter and T. Schrader from Physikalisch-Technische Bundesanstalt (PTB) and S. Priebe, M. Jacob, R. Piesiewicz and T. Kürner from the Institute for Communications Technology at Technical University Braunschweig for the joint work on channel characterization and transmission experiments. Furthermore TKO would like to acknowledge the fruitful discussions within the framework of the Terahertz Communications Lab (http://www.tcl.tu-bs.de/) where four research groups from PTB, Technical University Braunschweig and University of Marburg work together on the fundamentals of THz communications. TKO would like to thank M. Koch and J. Schöbel for the development of concepts and scientific discussions. He would also like to thank B. Spitschan, P. Schlegel und A. Gudat, all from the Institute for Communications Technology at Technical University Braunschweig, and J. Hartmann from Rohde & Schwarz Vertriebs-GmbH for the supply of measurement equipment and participation in preliminary experiments, as well as for helpful discussions.
The author (TN) wishes to thank Y. Kado, N. Kukutsu, A. Hirata, H.-J. Song, R. Yamaguchi, H. Takahashi, K. Ajito, T. Furuta, A. Wakatsuki, Y. Muramoto, T. Kosugi, K. Murata, N. Shigekawa, T. Enoki, and K. Iwatsuki all from NTT Laboratories, T. Ishibashi of NTT Electronics, H. Ito of Kitasato University, Y. Fujimoto, K. Miyake, T. Takada, and M. Kawamura all with Osaka University, H. Ikegawa, H. Nishikawa, T. Nakayama, and T. Inada all from Fuji Television Network, N. Iai, S. Okabe, S. Kimura Y. Endo, T. Ikeda, and K. Shogen all from NHK Science and Technical Research Laboratories, for their contribution and efforts in the THz communications research projects. TN also would like to express thanks to members of the study group on THz communications at Kinki Bureau of Telecommunications in the Ministry of Internal Affairs and Communications (MIC), Japan. He would like to acknowledge I. Hosako of National Institute of Information and Communications Technology, and D. M. Britz of AT&T Labs Research - Shannon Labs for their stimulating discussion and support. Part of this work was supported by the “Research and Development Project for the Expansion of Radio Spectrum Resources” made available by the MIC, and by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (A), 20246062, 2008.
- 1.Cherry, S., Edholm’s law of bandwidth, IEEE Spectr. 41, 50 (2004).Google Scholar
- 2.M. Jacob, S. Priebe, C. Jastrow, T. Kleine-Ostmann, T. Schrader, T. Kürner, An Overview of ongoing activities in the field of channel modeling, spectrum allocation and standardization for mm-wave and THz indoor communications, IEEE Globecom 2009, Honolulu, USA, Dec. 2009.Google Scholar
- 7.M. J. Fitch and R. Osiander, Terahertz Waves for Communications and Sensing, Johns Hopkins APL Techn. Dig. 25, 348 (2004).Google Scholar
- 9.B(08)058 annex 3draft cept brief on wrc-11 agenda item 1.6 (bands above 275 ghz), www.ero.dk.
- 12.L.W. Couch, Digital and Analog Communication Systems, Prentice Hall 1997, pp. 560-572.Google Scholar
- 13.Tech. Dig. IEEE MTT-S International Microwave Symposium Workshop, WSN/WMD/WFE, Honolulu (2007).Google Scholar
- 16.T. Suemitsu, Y. M. Meziani, Y. Hosono, M. Hanabe, T. Otsuji, E. Sano, Novel plasmon-resonant terahertz-wave emitter using a double-decked HEMT structure”, Tech. Dig. 65th Device Research Conference (DRC), 157-158 (2007).Google Scholar
- 17.G. Scalari, C. Walther, M. Fischer, M. I. Amanti, R. Terazzi, N. Hoyler, H. Beere, D. Ritchie, and J. Faist, Recent progress on long wavelength quantum cascade laser operating between 1-2 THz, Tech. Dig. IEEE LEOS Annual Meeting, ThJ1, Florida, 755-756 (2007).Google Scholar
- 19.A. Wakatsuki, T. Furuta, Y. Muramoto, T. Yoshimatsua, and H. Ito, High-power and broadband sub-terahertz wave generation using a J-band photomixer module with rectangular-waveguide output port, Tech. Dig. 2008 Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008), M4K2.1199 (2008).Google Scholar
- 21.K. J. Williams, D. A. Tulchinsky, and J. C. Campbell, High-power photodiodes, Tech. Dig. Microwave Photonics, 9-13 (2007).Google Scholar
- 22.T. Minotani, A. Hirata, and T. Nagatsuma, A broadband 120-GHz. Schottky-diode receiver for 10-Gbit/s wireless links, IEICE Trans. Electron. E86-C, 1501-1505 (2003).Google Scholar
- 24.R. Piesiewicz, M. Jacob, M. Koch, J. Schoebel, T. Kürner, Performance analysis of future multi-gigabit wireless communication systems at THz frequencies with highly directive antennas in realistic indoor environments, IEEE Journal Select. Topics Quant. Electronics, 14, 421 (2008).CrossRefGoogle Scholar
- 26.R. Piesiewicz, C. Jansen, D. Mittleman, T. Kleine-Ostmann, M. Koch and T. Kürner, Scattering analysis for the modeling of THz communication systems, IEEE Trans. on Antennas & Propagation (special issue on Optical and THz Antenna Technology) 55, 3002-3009 (2007).Google Scholar
- 28.US patent 6.954.309 B2Google Scholar
- 29.M. Born, E. Wolf, Principles of Optics, Cambridge University Press, Cambridge, England, 1998.Google Scholar
- 30.R. Piesiewicz, K. Baaske, K. Gerlach, M. Koch, T. Kürner, The potential of dielectric mirrors as key elements in future non-line-of-sight indoor terahertz communication systems, Proc. 16th Intl. Symp. on Space Terahertz Technology, Göteborg, Sweden, May 2005.Google Scholar
- 34.T. S. Bird, A. R. Weily and S. M. Hanham, Antennas for future very-high throughput wireless LANs, IEEE Antennas & Propagation Society Symposium, San Diego, CA, 5 - 12 July, 2008.Google Scholar
- 35.P. Herrero, M. Jacob, J. Schöbel, Planar antennas and interconnection components for 122 GHz and 140 GHz future communication systems, THz Metrology, Frequenz (special issue on Terahertz Technologies and Applications) 62, 137-148 (2008).Google Scholar
- 53.T. Kleine-Ostmann, T. Schrader, M. Bieler, U. Siegner, C. Monte, B. Gutschwager, J. Hollandt, A. Steiger, L. Werner, R. Müller, G. Ulm, I. Pupeza, and M. Koch, THz Metrology, Frequenz (special issue on Terahertz Technologies and Applications) 62, 137-148 (2008).Google Scholar
- 57.T. Kosugi, M. Tokumitsu, K. Murata, T. Enoki, H. Takahashi, A. Hirata, and T. Nagatsuma, 120-GHz Tx/Rx waveguide modules for 10-Gbit/s wireless link system, IEEE Compound Semiconduct. IC Symp. Dig., 25-28 (2006).Google Scholar
- 58.R. Yamaguchi, A. HIrata, T. Kosugi, H. Takahashi, N. Kukutsu, T. Nagatsuma, Y. Kado, H. Ikegawa, H. Nishikawa, and T. Nakayama, 10-Gbit/s MMIC wireless link exceeding 800 meters, Proc. 2008 IEEE RWS, TH1C-3, Florida (2008).Google Scholar
- 59.A. Hirata, H. Takahashi, N. Kukutsu, Y. Kado, H. Ikegawa, H. Nishikawa, T. Nakayama, and T. Inada, Transmission trial of television broadcast materials using 120-GHz-band wireless link, NTT Technical Review 7, March Issue (2009).Google Scholar
- 60.A. Hirata, R. Yamaguchi, T. Kosugi, H. Takahashi, K. Murata, T. Nagatsuma, N. Kukutsu, Y. Kado, N. Iai, S. Okabe, S. Kimura, H. Ikegawa, H. Nishikawa, T. Nakayama, and T. Inada, 10-Gbit/s wireless link using InP HEMT MMICs for generating 120-GHz-band millimeter-wave signal, IEEE Trans. Microwave Theory Tech. 57, 1102-1109 (2009).CrossRefGoogle Scholar
- 61.T. Nagatsuma, H.-J. Song, Y. Fujimoto, K. Miyake, A. Hirata, K. Ajito, A. Wakatsuki, T. Furuta, N. Kukutsu, and Y. Kado, Giga-bit wireless link using 300-400 GHz bands, Tech. Dig. IEEE International Topical Meeting on Microwave Photonics, Th.2.3 (2009).Google Scholar