Circularly Polarized Rectangular Ring-Slot Antenna with Chamfered Corners for Off-Body Communication at 5.8 GHz ISM Band

Circularly Polarized Rectangular Ring-Slot Antenna with Chamfered Corners for Off-Body Communication at 5.8 GHz ISM Band

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This paper deals with a substrate integrated waveguide (SIW) Washing Machine Control Knob Shaft circularly polarized rectangular ring-slot antenna with chamfered corners designed for 5.8 GHz ISM frequency band for off-body communication.The antenna consists of a substrate integrated waveguide, which operates in the fundamental mode TE10, and the rectangular ring-slot radiator with chamfered corners etched in the top wall of the SIW.

It radiates a right-handed circularly polarized (RHCP) wave in the boresight direction.Experimental results prove that the proposed antenna located in free space achieves the impedance bandwidth of 2.41 % (for the reflection coefficient less than -10 dB) and the RHCP gain of 6.

57 dBi, and the impedance bandwidth of 2.6 % and the RHCP gain of 6.98 Tie Clip dBi for its location on the phantom.

The axial ratio (AR) bandwidth (for the AR less than 3 dB) is 0.9 % for both configurations.