A Compact Broadband Circularly Polarized Wide-Slot Antenna With Axial Ratio Bandwidth Encompassing LTE 42 and LTE 43 Standards of 5G Mid-Band

This study presents a compact broadband wide-slot antenna with left-hand circular polarization compatible both LTE 42 and 43 standards of 5G mid-band applications. The proposed is fabricated on an FR4 dielectric substrate overall dimensions $0.41\lambda _{o}\times 0.36\lambda 0.02\lambda _{o}$ , where notation="LaTeX">$\lambda the free space wavelength at resonant frequency antenna. ground plane etched to form square radiating slot pair rectangular stubs that are diagonally placed inside slot. On other side antenna, feed line loaded by horizontal vertical improve coupling between To generate polarization, feeding cooperate excite two different points whose currents have approximately equal amplitude 90° phase shift. measured impedance bandwidth (BW) 16.2% (580 MHz along band 3.3-3.88 GHz), while observed axial ratio (ARBW) 12.2% (440 in 3.4-3.84 GHz band). gain values found be larger than 2.5 dB