Experimental Studies of Antenna Miniaturization Using Magneto-Dielectric and Dielectric Materials

TL;DR

This paper experimentally investigates how magneto-dielectric and dielectric materials affect the miniaturization of meandered PIFA antennas, highlighting the importance of material placement for optimal performance.

Contribution

It provides measurement data and analysis on the effects of magneto-dielectric versus dielectric fillings in PIFA antennas, emphasizing the significance of positioning for antenna miniaturization.

Findings

Magneto-dielectric filling offers moderate benefits.

Proper placement of materials significantly impacts antenna performance.

Comparison of antennas shows positioning influences the quality factor.

Abstract

Measurement results for a meandered planar inverted-F antenna (PIFA) loaded with magneto-dielectric and dielectric materials are presented. Figures of merit and ways to compare antennas with different fillings materials are discussed. The used magneto-dielectric material is described, the radiation mechanism of the meandered PIFA is studied, and the proper position for dielectric and magneto-dielectric filling is discussed and identified. Identical-size antennas with dielectric and magneto-dielectric fillings are compared at the same resonance frequency using the radiation quality factor as the figure of merit. It is seen, that the benefit from the magneto-dielectric filling material is moderate and strongly dependent on the positioning of the filling.