Skip to main navigation Skip to search Skip to main content

Semi-Annular-Ring slots loading for broadband circularly polarized DR-Rectenna for RF energy harvesting in smart city environment

  • Daasari Surender
  • , Md Ahsan Halimi
  • , Taimoor Khan*
  • , Fazal A. Talukdar
  • , Ahmed A. Kishk
  • , Yahia M.M. Antar
  • , Sembiam R. Rengarajan
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

This article describes a circularly polarized (CP) broadband rectenna enabling sensing nodes connected in the smart cities to harvest radio frequency (RF) energy from the surrounding atmosphere. The proposed antenna efficiently operates at the 5.8 GHz Wi-Fi band (5.725–5.875 GHz) and the Wi-Fi 6E band (5.925–7.125). The antenna is a semi-cylindrical dielectric resonator antenna (S-CDRA) energized by a microstrip feed. Semi-annular slots are introduced around a Bow-tie slot from the ground plane side, enhancing the bandwidth, gain, and CP characteristics. The antenna provides an impedance bandwidth (BW) of 2.89 GHz (5.45–8.34 GHz) and offers CP characteristics with an axial ratio (AR) bandwidth of 680 MHz (5.67–6.35 GHz). The antenna maintains a minimum gain of 4.8 dBic. A series-pair configuration is proposed for an extended operating range and better conversion efficiency. The maximum simulated and measured conversion efficiencies are 66.6% and 65.2% at 11 dBm input power, respectively.

Original languageEnglish
Article number154143
JournalAEU - International Journal of Electronics and Communications
Volume147
DOIs
StatePublished - Apr 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier GmbH

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 11 - Sustainable Cities and Communities
    SDG 11 Sustainable Cities and Communities

Keywords

  • Annular slots
  • Bow-tie shaped slot
  • Broadband antenna
  • Circular polarization (CP)
  • Dielectric resonator antenna (DRA)
  • Rectenna
  • Semi-cylindrical DRA (semi-CDRA)
  • Series-pair topology

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Semi-Annular-Ring slots loading for broadband circularly polarized DR-Rectenna for RF energy harvesting in smart city environment'. Together they form a unique fingerprint.

Cite this