Numerical and experimental generated data during project https://doi.org/10.1016/j.aeue.2024.155534

The dataset was generated during a project aimed at designing a super-miniaturized frequency reconfigurable antenna diplexer based on microfluidic techniques. The proposed structure was developed using a half-mode substrate-integrated rectangular waveguide (HMSIRW). The antenna architecture consisted of two HMSIRW cavities loaded with L-shaped slots, excited by two microstrip feedlines to realize two distinct radiating frequency bands. The footprint of the antenna diplexer was miniaturized by using the half-mode cavities. The capacitive loading of the slots achieved further size reduction.
The empty fluidic vias were drilled on the bottom plane of the cavities and poured with various dielectric liquids to obtain independent frequency reconfigurability at two operating bands. The measured results showed that the return loss, isolation, and realized gains were greater than −20 dB, 28 dB, and 3.3 dBi, respectively, while ensuring a small footprint of only 0.071λg2. The fabricated diplexer exhibited a frequency reconfiguration range greater than 17 % at both frequency bands.