Investigation on a 220 GHz quasi-optical antenna for wireless power transmission

Meng Han, Xiaotong Guan, Moshe Einat, Wenjie Fu, Yang Yan

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This paper investigates a 220 GHz quasi-optical antenna for millimeter-wave wireless power transmission. The quasi-optical antenna consists of an offset dual reflector, and fed by a Gaussian beam that is based on the output characteristics of a high-power millimeter-wave radiation source-gyrotron. The design parameter is carried on by a numerical code based on geometric optics and vector diffraction theory. To realize long-distance wireless energy transmission, the divergence angle of the output beam must be reduced. Electromagnetic simulation results show that the divergence angle of the output beam of the 5.6 mm Gaussian feed source has been significantly reduced by the designed quasi-optical antenna. The far-field divergence angle of the quasi-optical antenna in the E plane and H plane is 1.0596 and 1.0639, respectively. The Gaussian scalar purity in the farthest observation field (x = 1000 m) is 99.86%. Thus, the quasi-optical antenna can transmit a Gaussian beam over long-distance and could be used for millimeter-wave wireless power transmission.

Original languageEnglish
Article number634
Pages (from-to)1-14
Number of pages14
JournalElectronics (Switzerland)
Volume10
Issue number5
DOIs
StatePublished - 1 Mar 2021

Keywords

  • Gaussian beam
  • Gyrotron
  • Millimeter waves
  • Quasi-optical antenna
  • Wireless power transmitting

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