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

abstract

• 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%.

authors

• Karim, Muhammad Faeyz

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

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Antennas and Propagation Magazine  Journal

keywords

• 40 Engineering
• 4006 Communications Engineering
• 4009 Electronics, Sensors And Digital Hardware
• 7 Affordable And Clean Energy

Digital Object Identifier (DOI)

• 10.1109/map.2019.2895648

start page

• 94

end page

• 111

volume

• 61

issue

• 2

URL

• http://dx.doi.org/10.1109/map.2019.2895648