The design and characterization of a new broadband small patch antenna, based on an innovative magneto-dielectric material and suitable for wearable applications at 868 MHz, is presented. To reduce antenna dimensions, while preserving its radiation and matching performance, a barium-strontium hexaferrite Ba0.75Sr0.25Fe12O19 has been synthesized as the antenna substrate to achieve magnetic permeability double than vacuum in the band of interest. First material realization is characterized and dispersive permittivity and permeability behaviors are included in the design of a small patch antenna with a shorting-plate. A button-size realization is obtained and its suitability for wearable applications is numerically and experimentally demonstrated on body with and without the presence of conductive shielding. Very good Agreement with measurements is demonstrated for both matching and radiation performance of the antenna.
M. Aldrigo, A. Costanzo, D. Masotti, C. Baldisserri, I. Dimitru, C. Galassi (2013). Numerical and experimental characterization of a button-shaped miniaturized UHF antenna on magneto-dielectric substrate. INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES, 5(3), 231-239 [10.1017/S1759078713000445].
Numerical and experimental characterization of a button-shaped miniaturized UHF antenna on magneto-dielectric substrate
ALDRIGO, MARTINO;COSTANZO, ALESSANDRA;MASOTTI, DIEGO;
2013
Abstract
The design and characterization of a new broadband small patch antenna, based on an innovative magneto-dielectric material and suitable for wearable applications at 868 MHz, is presented. To reduce antenna dimensions, while preserving its radiation and matching performance, a barium-strontium hexaferrite Ba0.75Sr0.25Fe12O19 has been synthesized as the antenna substrate to achieve magnetic permeability double than vacuum in the band of interest. First material realization is characterized and dispersive permittivity and permeability behaviors are included in the design of a small patch antenna with a shorting-plate. A button-size realization is obtained and its suitability for wearable applications is numerically and experimentally demonstrated on body with and without the presence of conductive shielding. Very good Agreement with measurements is demonstrated for both matching and radiation performance of the antenna.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
