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A monolithic distributed phase shifter based on right-handed nonlinear transmission lines at 30 GHz |
Huang Jie (黄杰)a b, Zhao Qian (赵倩)c, Yang Hao (杨浩)d, Dong Jun-Rong (董军荣)d, Zhang Hai-Ying (张海英)d |
a School of Engineering and Technology, Southwest University, Chongqing 400715, China; b State Key Laboratory of Millimeter Waves, Nanjing 210096, China; c School of Physical Science and Technology, Southwest University, Chongqing 400715, China; d Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China |
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Abstract The epitaxial material, device structure, and corresponding equivalent large signal circuit model of GaAs planar Schottky varactor diode are successfully developed to design and fabricate a monolithic phase shifter, which is based on right-handed nonlinear transmission lines and consists of a coplanar waveguide transmission line and periodically distributed GaAs planar Schottky varactor diode. The distributed-Schottky transmission-line-type phase shifter at a bias voltage greater than 1.5 V presents a continuous 0°–360° differential phase shift over a frequency range from 0 to 33 GHz. It is demonstrated that the minimum insertion loss is about 0.5 dB and that the return loss is less than-10 dB over the frequency band of 0–33 GHz at a reverse bias voltage less than 4.5 V. These excellent characteristics, such as broad differential phase shift, low insertion loss, and return loss, indicate that the proposed phase shifter can entirely be integrated into a phased array radar circuit.
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Received: 25 June 2013
Revised: 28 August 2013
Accepted manuscript online:
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PACS:
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73.61.Ey
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(III-V semiconductors)
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85.40.-e
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(Microelectronics: LSI, VLSI, ULSI; integrated circuit fabrication technology)
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84.40.Az
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(Waveguides, transmission lines, striplines)
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84.40.Dc
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(Microwave circuits)
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Fund: Project supported by the Fundamental Research Funds for Central Universities, China (Grant No. XDJK2013B004), the Research Fund for the Doctoral Program of Southwest University, China ( Grant No. SWU111030),and the State Key Laboratory for Millimeter Waves of Southeast University, China (Grant No. K201312). |
Corresponding Authors:
Huang Jie
E-mail: jiehuang@swu.edu.cn
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Cite this article:
Huang Jie (黄杰), Zhao Qian (赵倩), Yang Hao (杨浩), Dong Jun-Rong (董军荣), Zhang Hai-Ying (张海英) A monolithic distributed phase shifter based on right-handed nonlinear transmission lines at 30 GHz 2013 Chin. Phys. B 22 127307
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