Abstract: An electromagnetic, EM, apparatus, includes: a first portion having an EM signal feed; and a second portion disposed on the first portion, the second portion having a shaped metallized form having at least one shaped metallized cavity, the second portion further having a dielectric medium disposed within each of the at least one shaped metallized cavity such that respective ones of the dielectric medium has a 3D shape that conforms to a shape of a corresponding one of the at least one shaped metallized cavity.

Abstract: A waveguide antenna system, includes: an electromagnetic, EM, transition portion having a transition region having a signal feed interface and an open waveguide section, the EM transition portion configured to couple EM energy from the signal feed interface to a guided waveguide mode of EM energy to the open waveguide section via the transition region; and a leaky waveguide antenna portion configured and disposed to radiate electromagnetic energy received from the open waveguide section; wherein the EM transition portion is electromagnetically coupled to the leaky waveguide antenna portion, the EM transition portion being configured to support a transfer of electromagnetic energy from a signal feed structure to the leaky waveguide antenna portion.

Abstract: In an embodiment, a magneto-dielectric material comprises a polymer matrix; a plurality of hexaferrite microfibers; wherein the magneto-dielectric material has a permeability of 2.5 to 7, or 2.5 to 5 in an x-direction parallel to a broad surface of the magneto-dielectric material and a magnetic loss tangent of less than or equal to 0.03; as determined at 1 GHz, or 1 to 2 GHz.

Abstract: Disclosed herein is a hexaferrite composite comprising polytetrafluoroethylene; and greater than or equal to 40 vol %, or 40 to 90 vol % a plurality of Co2Z hexaferrite particles based on the total volume of the polytetrafluoroethylene and the plurality of Co2Z hexaferrite particles on a void-free basis; wherein the hexaferrite composite has a porosity of greater than or equal to 10 vol % based on the total volume of the hexaferrite composite; wherein the hexaferrite composite has a permeability of greater than or equal to 2.5 and a ratio of the permeability to the permittivity of greater than or equal to 0.4, both determined at 500 MHz.

Abstract: Disclosed herein is a hexaferrite composite comprising polytetrafluoroethylene; and greater than or equal to 40 vol %, or 40 to 90 vol % a plurality of Co2Z hexaferrite particles based on the total volume of the polytetrafluoroethylene and the plurality of Co2Z hexaferrite particles on a void-free basis; wherein the hexaferrite composite has a porosity of greater than or equal to 10 vol % based on the total volume of the hexaferrite composite; wherein the hexaferrite composite has a permeability of greater than or equal to 2.5 and a ratio of the permeability to the permittivity of greater than or equal to 0.4, both determined at 500 MHz.

Abstract: In an aspect, a magnetic particle, comprises a core comprising iron, and a second metal comprising cobalt, nickel, or a combination thereof; wherein a core atomic ratio of the iron to the second metal is 50:50 to 75:25; and a shell at least partially surrounding the core, and comprising an iron oxide, an iron nitride, or a combination thereof, and the second metal. In another aspect, a magneto-dielectric material comprises a polymer matrix and a plurality of the magnetic particles; wherein the magneto-dielectric material has a magnetic loss tangent of less than or equal to 0.07 at 1 GHz.

Abstract: A polyimide composition that includes a polyimide having a linear coefficient of thermal expansion of less than or equal to 1 ppm/° C., or ?0.5 to 0.5 ppm/° C.; and a fluoropolymer; wherein the polyimide composition has a permittivity of less than or equal to 5, or less than or equal to 3.5 at a frequency of 10 GHz.

Abstract: In an embodiment, a magneto-dielectric material comprises a polymer matrix; a plurality of hexaferrite microfibers; wherein the magneto-dielectric material has a permeability of 2.5 to 7, or 2.5 to 5 in an x-direction parallel to a broad surface of the magneto-dielectric material and a magnetic loss tangent of less than or equal to 0.03; as determined at 1 GHz, or 1 to 2 GHz.

Abstract: In an embodiment, a method of forming a magneto-dielectric material comprises roll coating a ferromagnetic material onto a dielectric layer comprising a dielectric material by continuously moving the dielectric layer through a ferromagnetic coating zone to form a coated sheet; forming a plurality of sheets from the coated sheet; forming a layered stack of the plurality of sheets; laminating the layered stack to form the magneto-dielectric material having a plurality of alternating ferromagnetic layers and dielectric layers. In another embodiment, a method of forming a magneto-dielectric material comprises drum roll coating a ferromagnetic material and a dielectric material onto a drum roll to form the magneto-dielectric material having a plurality of alternating ferromagnetic layers and dielectric layers.

Abstract: Disclosed herein is a composite metamaterial comprising a polymer foam layer having one or both of a low dielectric constant of less than or equal to 2 and a low magnetic constant of less than or equal to 1, both determined at a frequency of 100 Hz and a temperature of 23° C.; wherein the polymer foam layer comprises a first surface, a second surface, and a plurality of vias that each independently at least partially extend from one or both of the first surface and the second surface into the polymer foam layer; and a via material having one or both of a high dielectric constant greater than the low dielectric constant and a high magnetic constant greater than the low magnetic constant disposed in and filling the plurality of vias.

Abstract: In an embodiment, a magneto-dielectric substrate comprises a dielectric polymer matrix; and a plurality of hexaferrite particles dispersed in the polymer matrix in an amount and of a type effective to provide a magneto-dielectric substrate having a magnetic constant of greater than or equal to 2.5 from 0 to 500 MHz, or 3 to 8 from 0 to 500 MHz; a magnetic loss of less than or equal to 0.1 from 0 to 500 MHz, or 0.001 to 0.05 over 0 to 500 MHz; and a dielectric constant of 1.5 to 8 or 2.5 to 8 from 0 to 500 MHz.

Abstract: In an embodiment, a magneto-dielectric substrate comprises a dielectric polymer matrix; and a plurality of hexaferrite particles dispersed in the dielectric polymer matrix in amount and of a type effective to provide the magneto-dielectric substrate with a magnetic constant of less than or equal to 3.5 from 500 MHz to 1 GHz, or 3 to 8 from 500 MHz to 1 GHz, and a magnetic loss of less than or equal to 0.1 from 0 to 1 GHz, or 0.001 to 0.07 over 0 to 1 GHz.

Abstract: In an embodiment, a magneto-dielectric substrate comprises a dielectric polymer matrix; and a plurality of hexaferrite particles dispersed in the polymer matrix in an amount and of a type effective to provide a magneto-dielectric substrate having a magnetic constant of greater than or equal to 2.5 from 0 to 500 MHz, or 3 to 8 from 0 to 500 MHz; a magnetic loss of less than or equal to 0.1 from 0 to 500 MHz, or 0.001 to 0.05 over 0 to 500 MHz; and a dielectric constant of 1.5 to 8 or 2.5 to 8 from 0 to 500 MHz.

Abstract: A high voltage waveform is generated that is similar to a low voltage input waveform. The high voltage waveform is a series of pulses that are applied directly to the device. An error signal controls the frequency, magnitude, and duration of the pulses. A feedback signal derived from the high voltage waveform is compared with the input waveform to produce the error signal.

Abstract: A high voltage waveform is generated that is similar to a low voltage input waveform. The high voltage waveform is a series of pulses that are applied directly to the device. An error signal controls the frequency, magnitude, and duration of the pulses. A feedback signal derived from the high voltage waveform is compared with the input waveform to produce the error signal.

Abstract: A high voltage waveform is generated that is similar to a low voltage input waveform. The high voltage waveform is a series of pulses that are applied directly to the device. An error signal controls the frequency, magnitude, and duration of the pulses. A feedback signal derived from the high voltage waveform is compared with the input waveform to produce the error signal.

Abstract: A signal for controlling output voltage from the driver is modulated by the input signal to the driver, whereby the output voltage tracks the input signal, matching power to demand. The output storage capacitor can be reduced in size because the amount of energy that needs to be stored is reduced. In addition, feedback transistors are paired on the same substrate and cause opposite changes in response to changes in temperature, thereby automatically compensating for changes in temperature without the use of additional components.