中国物理B ›› 2015, Vol. 24 ›› Issue (12): 127704-127704.doi: 10.1088/1674-1056/24/12/127704

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Ultrahigh frequency tunability of aperture-coupled microstrip antenna via electric-field tunable BST

杜洪磊a, 薛倩a, 高小洋a, 姚凤蕊a, 卢世阳a, 汪业龙b, 刘春恒c, 张永成a, 吕跃广b, 李山东a d   

  1. a College of Physics, Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, and Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Qingdao 266071, China;
    b Department of Physics, School of Science, Harbin Institute of Technology, Harbin 150001, China;
    c Northern Institute of Electronic Equipment of China, Beijing 100083, China;
    d National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • 收稿日期:2015-04-30 修回日期:2015-08-14 出版日期:2015-12-05 发布日期:2015-12-05
  • 通讯作者: Li Shan-Dong E-mail:lishd@qdu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074040) and the Key Project of Shandong Provincial Department of Science and Technology, China (Grant No. ZR2012FZ006).

Ultrahigh frequency tunability of aperture-coupled microstrip antenna via electric-field tunable BST

Du Hong-Lei (杜洪磊)a, Xue Qian (薛倩)a, Gao Xiao-Yang (高小洋)a, Yao Feng-Rui (姚凤蕊)a, Lu Shi-Yang (卢世阳)a, Wang Ye-Long (汪业龙)b, Liu Chun-Heng (刘春恒)c, Zhang Yong-Cheng (张永成)a, Lü Yue-Guang (吕跃广)b, Li Shan-Dong (李山东)a d   

  1. a College of Physics, Laboratory of Fiber Materials and Modern Textile, the Growing Base for State Key Laboratory, and Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Qingdao 266071, China;
    b Department of Physics, School of Science, Harbin Institute of Technology, Harbin 150001, China;
    c Northern Institute of Electronic Equipment of China, Beijing 100083, China;
    d National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • Received:2015-04-30 Revised:2015-08-14 Online:2015-12-05 Published:2015-12-05
  • Contact: Li Shan-Dong E-mail:lishd@qdu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074040) and the Key Project of Shandong Provincial Department of Science and Technology, China (Grant No. ZR2012FZ006).

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摘要： A composite ceramic with nominal composition of 45.0 wt%(Ba0.5Sr0.5)TiO3-55.0 wt%MgO (acronym is BST-MgO) is sintered for fabricating a frequency reconfigurable aperture-coupled microstrip antenna. The calcined BST-MgO composite ceramic exhibits good microwave dielectric properties at X-band with appropriate dielectric constant εr around 85, lower dielectric loss \tanδ about 0.01, and higher permittivity tunability 14.8% at 8.33 kV/cm. An ultrahigh E-field tunability of working frequency up to 11.0% (i.e., from 9.1 GHz to 10.1 GHz with a large frequency shift of 1000 MHz) at a DC bias field from 0 to 8.33 kV/cm and a considerably large center gain over 7.5 dB are obtained in the designed frequency reconfigurable microstrip antenna. These results demonstrate that BST materials are promising for the frequency reconfigurable antenna.

关键词: barium strontium titanate, E-field tunability, frequency reconfigurable antennas, microstrip antenna

Abstract: A composite ceramic with nominal composition of 45.0 wt%(Ba0.5Sr0.5)TiO3-55.0 wt%MgO (acronym is BST-MgO) is sintered for fabricating a frequency reconfigurable aperture-coupled microstrip antenna. The calcined BST-MgO composite ceramic exhibits good microwave dielectric properties at X-band with appropriate dielectric constant εr around 85, lower dielectric loss \tanδ about 0.01, and higher permittivity tunability 14.8% at 8.33 kV/cm. An ultrahigh E-field tunability of working frequency up to 11.0% (i.e., from 9.1 GHz to 10.1 GHz with a large frequency shift of 1000 MHz) at a DC bias field from 0 to 8.33 kV/cm and a considerably large center gain over 7.5 dB are obtained in the designed frequency reconfigurable microstrip antenna. These results demonstrate that BST materials are promising for the frequency reconfigurable antenna.

Key words: barium strontium titanate, E-field tunability, frequency reconfigurable antennas, microstrip antenna

中图分类号:  (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)

  • 77.84.-s
85.50.-n (Dielectric, ferroelectric, and piezoelectric devices) 84.40.-x (Radiowave and microwave (including millimeter wave) technology) 84.40.Ba (Antennas: theory, components and accessories)