Wideband Aperture Coupled Patch Antenna for 6G Millimeter-Wave Applications

This paper presents a wideband stacked aperture coupled microstrip patch antenna for 6G mmWave applications. The wide bandwidth behavior is obtained by employing two closely spaced coupled resonances in a multi layered structure. The antenna characteristics that lead to a coupled resonance are achieved by an aperture coupled feed, stacking up of parasitic patches vertically and an H shaped radiating patch. An antenna is fabricated, and measurements are compared with simulations. The measurement result shows that the antenna has a wide relative bandwidth of 15% at operational frequency range of 25.21 GHz to 29.3 GHz, which agrees with the simulated bandwidth, taking the manufacturing tolerances into account. The measured antenna gain mostly agrees with the simulated gain.