中国物理B ›› 2018, Vol. 27 ›› Issue (10): 100304-100304.doi: 10.1088/1674-1056/27/10/100304

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Ultra-thin and light-weight spoof surface plasmon polariton coupler achieved by broadside coupled split ring resonators

Ya Fan(范亚), Jia-Fu Wang(王甲富), Hua Ma(马华), Yong-Feng Li(李勇峰), Ming-De Feng(冯明德), Shao-Bo Qu(屈绍波)   

  1. Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China
  • 收稿日期:2018-04-19 修回日期:2018-06-04 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Jia-Fu Wang, Shao-Bo Qu E-mail:wangjiafu1981@126.com;qushaobo@mail.xjtu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 61471388, and 61501503).

Ultra-thin and light-weight spoof surface plasmon polariton coupler achieved by broadside coupled split ring resonators

Ya Fan(范亚), Jia-Fu Wang(王甲富), Hua Ma(马华), Yong-Feng Li(李勇峰), Ming-De Feng(冯明德), Shao-Bo Qu(屈绍波)   

  1. Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China
  • Received:2018-04-19 Revised:2018-06-04 Online:2018-10-05 Published:2018-10-05
  • Contact: Jia-Fu Wang, Shao-Bo Qu E-mail:wangjiafu1981@126.com;qushaobo@mail.xjtu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61331005, 61471388, and 61501503).

摘要:

Low profile and light weight are very important for practical applications of a spoof surface plasmon polariton (SSPP) coupler, especially at low frequencies. In this paper, we propose and design an ultra-thin, light-weight SSPP coupler based on broadside coupled split ring resonators (BC-SRRs). The size of BC-SRR can be far less than λ/100 and can extremely well control the reflective phases within a subwavelength thickness. Due to the broadside capacitive coupling, the electrical size of BC-SRR is dramatically reduced to guarantee the ultra-thin thickness of the SSPP coupler. The weight of the SSPP coupler is reduced by a low occupation ratio of BC-SRR in the unit cell volume. As an example, a C-band SSPP coupler composed of phase gradient BC-SRRs is designed, fabricated, and measured. Due to the ultra-small size and low occupation ratio of BC-SRRs, the thickness of the coupler is λ/12 and the surface density is only 0.98 kg/m2. Both simulation and experiment results verify that the coupler can achieve high-efficiency SPP coupling at 5.27 GHz under normal incidence.

关键词: ultra-thin, light-weight, poof surface plasmon polariton, broadside coupling

Abstract:

Low profile and light weight are very important for practical applications of a spoof surface plasmon polariton (SSPP) coupler, especially at low frequencies. In this paper, we propose and design an ultra-thin, light-weight SSPP coupler based on broadside coupled split ring resonators (BC-SRRs). The size of BC-SRR can be far less than λ/100 and can extremely well control the reflective phases within a subwavelength thickness. Due to the broadside capacitive coupling, the electrical size of BC-SRR is dramatically reduced to guarantee the ultra-thin thickness of the SSPP coupler. The weight of the SSPP coupler is reduced by a low occupation ratio of BC-SRR in the unit cell volume. As an example, a C-band SSPP coupler composed of phase gradient BC-SRRs is designed, fabricated, and measured. Due to the ultra-small size and low occupation ratio of BC-SRRs, the thickness of the coupler is λ/12 and the surface density is only 0.98 kg/m2. Both simulation and experiment results verify that the coupler can achieve high-efficiency SPP coupling at 5.27 GHz under normal incidence.

Key words: ultra-thin, light-weight, poof surface plasmon polariton, broadside coupling

中图分类号:  (Phases: geometric; dynamic or topological)

  • 03.65.Vf
41.20.Jb (Electromagnetic wave propagation; radiowave propagation) 81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media)