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A terahertz on-chip InP-based power combiner designed using coupled-grounded coplanar waveguide lines |
Huali Zhu(朱华利), Yong Zhang(张勇)†, Kun Qu(屈坤), Haomiao Wei(魏浩淼), Yukun Li(黎雨坤), Yuehang Xu(徐跃杭), and Ruimin Xu(徐锐敏) |
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China |
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Abstract This article presents the design and performance of a terahertz on-chip coupled-grounded coplanar waveguide (GCPW) power combiner using a 50 μm-thick InP process. The proposed topology uses two coupled-GCPW lines at the end of the input port to substitute two quarter-wavelength GCPW lines, which is different from the conventional Wilkinson power combiner and can availably minimize the coverage area. According to the results obtained, for the frequency range of 210-250 GHz, the insertion losses for each two-way combiner and four-way combiner were lower than 1.05 dB and 1.35 dB, respectively, and the in-band return losses were better than 11 dB. Moreover, the proposed on-chip GCPW-based combiners achieved a compromise in low-loss, broadband, and small-size, which can find wide applications in terahertz bands, such as power amplifiers and signal distribution networks.
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Received: 28 January 2021
Revised: 24 March 2021
Accepted manuscript online: 27 May 2021
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PACS:
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07.50.-e
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(Electrical and electronic instruments and components)
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07.57.Hm
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(Infrared, submillimeter wave, microwave, and radiowave sources)
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84.40.Lj
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(Microwave integrated electronics)
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Fund: Project supported in part by the National Natural Science Foundation of China (Grant No. 61871072). |
Corresponding Authors:
Yong Zhang
E-mail: yongzhang@uestc.edu.cn
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Cite this article:
Huali Zhu(朱华利), Yong Zhang(张勇), Kun Qu(屈坤), Haomiao Wei(魏浩淼), Yukun Li(黎雨坤), Yuehang Xu(徐跃杭), and Ruimin Xu(徐锐敏) A terahertz on-chip InP-based power combiner designed using coupled-grounded coplanar waveguide lines 2021 Chin. Phys. B 30 120701
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