Frequency-Controlled 2-D Focus-Scanning Terahertz Reflectarrays

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
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  • Shi-Wei Qu
  • Lin Xiao
  • Huan Yi
  • Bao-Jie Chen


Original languageEnglish
Pages (from-to)1573-1581
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number3
Online published20 Dec 2018
Publication statusPublished - Mar 2019


In this paper, we report the design and realization of 2-D focus scanning of the reflected beam by exploiting the frequency dispersion characteristic of reflectarrays operating at terahertz (THz) frequencies. In the first design, we choose four focal points on a circular path at four different frequencies ranging from 0.225 to 0.3 THz and 2-D beam scanning in the focal plane is achieved as frequency increases. To increase the scanning area, we design a dual-band reflectarray and 1-D scanning is achieved in each of the operating bands with different focal positions along the direction orthogonal to the scanning. The proposed reflectarrays are fabricated and their 2-D focus-scanning abilities are measured and there are good agreements between the simulation results and the measurements. The proposed designs demonstrate and expand further the potential applications of reflectarrays in fast THz imaging and detection.

Research Area(s)

  • Apertures, Dispersion characteristic, Finite element analysis, frequency scanning, Imaging, reflectarrays, Reflection, Resonant frequency, Resonators, terahertz, Two dimensional displays

Citation Format(s)