• 文献标题:   Parasitic-coupled high-gain graphene antenna employed on PBG dielectric grating substrate for THz applications
  • 文献类型:   Article, Early Access
  • 作  者:   KUSHWAHA RK, KARUPPANAN P
  • 作者关键词:   dielectric grating, graphene, parasitic coupling, pbg, thz band
  • 出版物名称:   MICROWAVE OPTICAL TECHNOLOGY LETTERS
  • ISSN:   0895-2477 EI 1098-2760
  • 通讯作者地址:   Motilal Nehru Natl Inst Technol Allahabad
  • 被引频次:   1
  • DOI:   10.1002/mop.32033 EA SEP 2019
  • 出版年:  

▎ 摘  要

In THz frequency region, the high-gain miniaturized patch antenna is essential to overcome the atmospheric losses. A novel dual-band miniaturized graphene antenna array with parasitic-coupled feed and mounted on PBG dielectric grating substrate is proposed in the operating frequency band from 0.85 to 1.04 THz. The analysis of graphene surface conductivity, surface wave polariton (SPP) of photonic band gap (PBG) substrate, and the dielectric grating substrate has been done for the verification of a projected design. Parametric analysis of PBG radius, periodic perturbation of dielectric grating substrate, and mutual coupling distance has been verified to achieve the enhanced radiation characteristics of the antenna. The minimum return loss of -52.58 dB, VSWR of 1.005, impedance bandwidth of 33.34 GHz, the peak gain of 16.4 dB, and peak directivity of 17 dBi has been observed for the projected design. The parasitic-coupled method is suitable to reduce the complexity of the antenna array and proposed design is useful in imaging, security using spectroscopy, and wireless communication applications.