Abstract
This article proposes a novel compact wideband dielectric resonator antenna design that incorporates inhomogeneous material distribution in a cubic structure. Specifically, in this design, the cubic dielectric resonator antenna is divided into multiple small blocks, and a continuous genetic algorithm is employed to optimize the material property of each block in order to maximize the radiation bandwidth. As a result, a cubic dielectric resonator antenna with inhomogeneous material distributions is designed and tested. In measurement, the proposed compact dielectric resonator antenna design exhibits 64.9% impedance bandwidth (4.08–8 GHz), considerably higher than the bandwidth of the initial homogeneous dielectric resonator antenna. The maximum system gain achieved over the frequency range is 9 dB at 7 GHz, with a peak measured system efficiency of 90.6%.
| Original language | English |
|---|---|
| Article number | e70107 |
| Journal | Electronics Letters |
| Volume | 60 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 1 2024 |
Keywords
- antenna radiation patterns
- broadband antennas
- dielectric materials
- dielectric resonator antennas
- genetic algorithms
- optimization
- wireless communications