Authors:

Jack Thomas Willard

Date Created:

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About Paper:

Electrically small antennas (ESAs) continue to receive attention as their compact size and high directivity are useful for size constrained applications. An ESA is defined by Wheeler's criterion as a device where the product of the radius of the circumscribing sphere and wave number at the operating frequency is less than one. These are commonly constructed using metallic radiators; however, the complexity of these architectures places a ceiling on their performance. This prompts the design of alternative antennas including electrically small dielectric resonator antennas (ESDRAs). This research seeks to expand on existing ESDRA research by characterizing new antenna structures. The initial phase consists of reproducing the results of an existing ESDRA. New structures are then simulated and analyzed using Ansys High Frequency Simulation Software (HFSS). While the new designs undergo fabrication, standard antennas are characterized in an anechoic chamber to develop the reference data needed for measurements. The antenna structures discussed in this research indicate that ESDRAs are a valid alternative to existing antenna designs as they preserve radiation efficiency and increase aperture efficiency even as antenna size is electrically small. In the future, the fabricated ESDRAs will be measured and compared to the simulated models. Keywords: Antenna; Dielectric; Resonator; RF

Source:

Purdue University / 2025

Topics:

No topics listed

Co-authors:

Jack Thomas Willard