High Efficiency and Wideband 300 GHz Frequency Doubler Based on Six Schottky Diodes
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A high efficiency and wideband 300 GHz frequency doubler based on six Schottky diodes is presented in this paper. This balanced doubler features a compact and robust circuit on a 5-μm-thick, 0.36-mm-wide, and 1-mm-long GaAs membrane, fabricated by LERMA-C2N Schottky process. The conversion efficiency is mainly better than 16% across the wide bandwidth of 266–336 GHz (3 dB fractional bandwidth of 24%) when pumping with 20–60 mW input power (P in) at the room temperature. A peak output power of 14.75 mW at 332 GHz with a 61.18 mW P in, an excellent peak efficiency of 30.5% at 314 GHz with 43.86 mW P in and several frequency points with outstanding efficiency of higher than 25% are delivered. This doubler served as the second stage of the 600 GHz frequency multiplier chain is designed, fabricated, and measured. The performance of this 300 GHz doubler is highlighted comparing to the state-of-art terahertz frequency doublers.
KeywordsFrequency doubler High efficiency Six Schottky diodes Terahertz (THz) Wideband
This work was supported in part by the National Natural Science Foundation of China under Grant 11127903, 11190012 and 11422326 and the Strategic Priority Research Program of the Chinese Academy of Sciences, Grant Nos. XDB04010300 and XDB23020200. The authors would like to thank S. Caroopen, Observatoire de Paris-LERMA, for the measurement, and C. W. Li, Sichuan Puchuan Electromechanical Equipment Co., Ltd., for the block fabrication.
- 3.I. Mehdi, J. Siles, C. Lee and E. Schlecht, THz diode technology: status, prospects, and applications, Proc. IEEE, vol. 105, pp. 990–1007, 2017.Google Scholar
- 7.O. Cojocari, I. Oprea, H. Gibson, and A. Walber, Submm-wave multipliers by film-diode technology, in Proc. EuMW, Oct. 2016.Google Scholar
- 9.N. Erickson, J. Tuovinen, B. Rizzi, and T. Crowe, A balanced doubler using a planar diode array for 270 GHz, in Proc. 5th Int. Symp. Space THz Tech., May 1994, pp. 409–413.Google Scholar
- 11.E. Schlecht, G. Chattopadhyay, A. Maestrini, D. Pukala, J. Gill, and I. Mehdi, Harmonic balance optimization of terahertz Schottky diode multipliers using an advanced device model, in Proc. 13th Int. Symp. Space THz Tech., Cambridge, MA, Mar. 2002, pp. 187–196.Google Scholar
- 12.J. Lamb, Miscellaneous data on materials for millimeter and submillimeter optics, Int. J. Infrared and Millim. Waves, vol. 17, no. 12, 1996.Google Scholar
- 14.S. Martin, B. Nakamura, A. Fung, et al., Fabrication of 200 to 2700 GHz multiplier devices using GaAs and metal membranes, in IEEE MTT-S Int. Microw. Symp. Dig., Phoenix, AZ, May 2001, pp. 1641–1644.Google Scholar
- 15.A. Maestrini et al., Schottky diode based terahertz frequency multipliers and mixers, Comptes Rendus de l'Académie des Sciences, Physique, vol. 11, no. 7–8, Aug.–Oct. 2010.Google Scholar
- 16.J. Siles, E. Schlecht, R. Lin, C. Lee, and I. Mehdi, High-efficiency planar Schottky diode based submillimeter-wave frequency multipliers optimized for high-power operation, in Proc. 40th IRMMW-THz, 2015.Google Scholar
- 17.B. Alderman, M. Henry, H. Sanghera, H. Wang, S. Rea, B. Ellison and P. de Maagt, Schottky diode technology at Rutherford Appleton Laboratory, in Proc. IEEE Int. Conf. Microw. Technol. Comput. Electromagn., May 2011, pp. 4–6.Google Scholar
- 18.J. V. Siles, A. Maestrini, B. Alderman, et al., A single-waveguide in-phase power-combined frequency doubler at 190 GHz, IEEE Microw. Wireless Compon. Lett., vol. 21, no. 6, pp. 332–334, 2011.Google Scholar
- 19.V. Drakinskiy, P. Sobis, H. Zhao, T. Bryllert, and J. Stake, Terahertz GaAs Schottky diode mixer and multiplier MIC’s based on e-beam technology, in Proc. 25th Int. Conf. Indium Phosphide Rel. Mater., May 2013, pp. 1–2.Google Scholar
- 21.T. Waliwander, M. Fehilly, and E. O’Brien, An ultra-high efficiency high power Schottky varactor frequency doubler to 180–200 GHz, in Proc. Global Symp. Millim. Waves (GSMM) & ESA Workshop Millim.-Wave Technol. Appl., Helsinki, Finland, Apr. 2016, pp. 1–4.Google Scholar
- 22.Virginia Diodes Inc. [Online]. Available: http://vadiodes.com/en/ frequency-multipliers, Accessed: Feb. 2017.