Antennas with magneto-dielectrics

Limiter based on bandpass filter

“…One also notices that the bandwidth increases with the substrate permeability (μ r ) and decreases with the substrate permittivity (ε r ). This result is well-know [2]. It can be physically explained by the decreasing of the stored energy within the patch cavity with μ r and the increasing of the stored energy with ε r (see (5) and (8)).…”

Limiter based on bandpass filter

“…One also notices that the bandwidth increases with the substrate permeability (μ r ) and decreases with the substrate permittivity (ε r ). This result is well-know [2]. It can be physically explained by the decreasing of the stored energy within the patch cavity with μ r and the increasing of the stored energy with ε r (see (5) and (8)).…”

Exploitation of a novel magneto-dielectric substrate for miniaturization of wearable UHF antennas

“…Magneto-dielectric (MD) materials are proposed to strongly reduce antenna size [1][2][3], with moderate values of relative permittivity and permeability. This allows to keep the material intrinsic impedance within an easy-to-be-matched range and the radiation resistance sufficiently high to guarantee the radiation performance.…”

Inverse Source Problem in Nonhomogeneous Background Media. Part II: Vector Formulation and Antenna Substrate Performance Characterization

“…Generalization of the analysis for distributions of the constitutive parameters which are spherically symmetric within the source support V and take the free-space values outside V is also outlined. Our results reveal the performance improvements due to antenna-embedding substrates from an inverse antenna theory point of view which is different than and complementary to efforts by other groups in this fruitful area (e.g., [29,13,54,45,63,62,25,3,71,65,26,44,70]; an expanded bibliography can be found in [24]). Contrary to previous presentations, which focused on particular devices, we emphasize in the present work a non-device-specific analysis that aims at understanding the practical possibilities opened by antenna-embedding substrates.…”

Limiter based on bandpass filter

“…One also notices that the bandwidth increases with the substrate permeability (μ r ) and decreases with the substrate permittivity (ε r ). This result is well-know [2]. It can be physically explained by the decreasing of the stored energy within the patch cavity with μ r and the increasing of the stored energy with ε r (see (5) and (8)).…”

Exploitation of a novel magneto-dielectric substrate for miniaturization of wearable UHF antennas

“…Magneto-dielectric (MD) materials are proposed to strongly reduce antenna size [1][2][3], with moderate values of relative permittivity and permeability. This allows to keep the material intrinsic impedance within an easy-to-be-matched range and the radiation resistance sufficiently high to guarantee the radiation performance.…”

Inverse Source Problem in Nonhomogeneous Background Media. Part II: Vector Formulation and Antenna Substrate Performance Characterization

“…Generalization of the analysis for distributions of the constitutive parameters which are spherically symmetric within the source support V and take the free-space values outside V is also outlined. Our results reveal the performance improvements due to antenna-embedding substrates from an inverse antenna theory point of view which is different than and complementary to efforts by other groups in this fruitful area (e.g., [29,13,54,45,63,62,25,3,71,65,26,44,70]; an expanded bibliography can be found in [24]). Contrary to previous presentations, which focused on particular devices, we emphasize in the present work a non-device-specific analysis that aims at understanding the practical possibilities opened by antenna-embedding substrates.…”

Limiter based on bandpass filter

“…One also notices that the bandwidth increases with the substrate permeability (μ r ) and decreases with the substrate permittivity (ε r ). This result is well-know [2]. It can be physically explained by the decreasing of the stored energy within the patch cavity with μ r and the increasing of the stored energy with ε r (see (5) and (8)).…”

Exploitation of a novel magneto-dielectric substrate for miniaturization of wearable UHF antennas

“…Magneto-dielectric (MD) materials are proposed to strongly reduce antenna size [1][2][3], with moderate values of relative permittivity and permeability. This allows to keep the material intrinsic impedance within an easy-to-be-matched range and the radiation resistance sufficiently high to guarantee the radiation performance.…”

Inverse Source Problem in Nonhomogeneous Background Media. Part II: Vector Formulation and Antenna Substrate Performance Characterization

“…Generalization of the analysis for distributions of the constitutive parameters which are spherically symmetric within the source support V and take the free-space values outside V is also outlined. Our results reveal the performance improvements due to antenna-embedding substrates from an inverse antenna theory point of view which is different than and complementary to efforts by other groups in this fruitful area (e.g., [29,13,54,45,63,62,25,3,71,65,26,44,70]; an expanded bibliography can be found in [24]). Contrary to previous presentations, which focused on particular devices, we emphasize in the present work a non-device-specific analysis that aims at understanding the practical possibilities opened by antenna-embedding substrates.…”