A Wide-Angle Circularly Polarized Tapered-Slit Patch Antenna With a Compact Rectifier for Energy-Harvesting Systems Academic Article uri icon


  • A tapered-slit-patch antenna with wide-angle circularly polarized (CP) radiation and a compact rectifier was investigated for energy-harvesting systems. A tapered-slit octagonalshaped patch radiator was implemented to realize the CP microstrip antenna with wide-angle radiation using a proximity-coupled feed. Eight tapered slits with length difference of 1.3% were embedded along the octagonal directions symmetrically on the microstrip radiator from the patch's center. The antenna prototype showed a gain of more than 5.8 dBic across the CP bandwidth of 7 MHz (894-901 MHz) with a 3-dB axial ratio (AR) beamwidth of more than 180. A compact composite right/left-handed (CRLH)-based rectifier operating at 900 MHz was designed to be used along with the antenna for radio-frequency (RF) energy-harvesting system. A microstrip line forms the righthanded part of the CRLH transmission line (TL), and the lumped components form the left-handed part of the CRLH TL. The proposed rectifier was compact with size of 0.180 0.0750 0.00020 at 900 MHz with a high RF-dc conversion efficiency of 43%.

published proceedings

  • IEEE Antennas and Propagation Magazine

author list (cited authors)

  • Jie, A. M., Nasimuddin, .., Karim, M. F., & Chandrasekaran, K. T.

citation count

  • 17

complete list of authors

  • Jie, Ang Ming||Karim, Muhammad Faeyz||Chandrasekaran, Karthik T

publication date

  • April 2019