Ultra-Wideband Antenna Array for Modern Millimeter-Wave Wireless Applications

An ultra-wideband antenna with high gain performance for future 5G and beyond millimeter-wave (mm-wave) applications is presented in this paper. The proposed microstrip patch antenna element was designed based on an aperture-coupled microstrip patch with four loaded parasitic patches to improve the frequency bandwidth. The antenna was built by employing four metal layers. Roger RT/duroid 6006 and RT/duroid 6002 were used in this design as feeding and antenna substrates, respectively. The suggested antenna element was utilized to construct a 2×2 antenna array fed with a corporate feeding network to achieve high gain and desired radiation characteristics. ANSYSEDT 2022 R1 full-wave simulator was used to design and analyze the proposed antenna and the corporate feeding network. The array gain is between 9.5 dB and 13.2 dB over the desired band of interest. The attained reflection coefficient (S11) of better than -10 dB is in the range of 26.15 GHz – 38.6 GHz, occupying a relatively compact antenna size. Moreover, the presented antenna realizes a low cross-polarization and a good front-to-back ratio. The obtained results show that the presented antenna can be considered an excellent candidate for modern wireless communication systems in mm-wave wideband applications.