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High Efficiency and Wideband 300 GHz Frequency Doubler Based on Six Schottky Diodes

Journal of Infrared, Millimeter, and Terahertz Waves volume 38, pages1331–1341(2017)Cite this article

Abstract

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.

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Acknowledgments

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.

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Affiliations

  1. School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
    • Jiangqiao Ding
    •  & Wen Wu
  2. Shanghai Institute of Microsystem and Information Technology and the Key Laboratory of Terahertz Solid-State Technology, Chinese Academy of Sciences, Shanghai, 200050, China
    • Jiangqiao Ding
  3. Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères (LERMA), Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS), PSL Research University, Sorbonne Universités, Université Pierre et Marie Curie, 75014, Paris, France
    • Alain Maestrini
    •  & Lina Gatilova
  4. Centre de Nanosciences et de Nanotechnologies (C2N), CNRS, 91460, Marcoussis, France
    • Lina Gatilova
    •  & Antonella Cavanna
  5. Purple Mountain Observatory, Chinese Academy of Sciences and Key Laboratory of Radio Astronomy, Nanjing, 210008, China
    • Shengcai Shi
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  1. Jiangqiao Ding
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Correspondence to Jiangqiao Ding.

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Ding, J., Maestrini, A., Gatilova, L. et al. High Efficiency and Wideband 300 GHz Frequency Doubler Based on Six Schottky Diodes. J Infrared Milli Terahz Waves 38, 1331–1341 (2017). https://doi.org/10.1007/s10762-017-0413-y

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Keywords

  • Frequency doubler
  • High efficiency
  • Six Schottky diodes
  • Terahertz (THz)
  • Wideband