In one example, a semiconductor device, includes a substrate having a substrate top side, a substrate bottom side, a substrate dielectric structure, and a substrate conductive structure. The substrate conductive structure includes a transceiver pattern proximate to a substrate top side. An antenna structure includes an antenna dielectric structure coupled to the substrate top side, an antenna conductive structure having an antenna element, and a cavity below the antenna element. The antenna element overlies the transceiver pattern. The cavity includes a cavity ceiling, a cavity base, and a cavity sidewall between the cavity ceiling and the cavity base. Either a bottom surface of the antenna element defines the cavity ceiling and a perimeter portion of the antenna element is fixed to the antenna dielectric structure, or the antenna dielectric structure includes a body portion having a bottom surface that defines the cavity ceiling and the antenna element is vertically spaced apart from the bottom surface of the body portion. An semiconductor component is coupled to a bottom side of the substrate and is coupled to the transceiver pattern. Other examples and related methods are also disclosed herein.

An electronic device includes a housing including a first plate including a glass plate, a second plate facing the first plate, and a side surface surrounding a space between the first plate and the second plate, a display positioned inside the space and exposed through a first area of the first plate, an antenna structure at least partially overlapping a second area of the first plate when viewed from above the first plate and which is connected to the second area, and a processor.

A terahertz element of an aspect of the present disclosure includes a semiconductor substrate, first and second conductive layers, and an active element. The first and second conductive layers are on the substrate and mutually insulated. The active element is on the substrate and electrically connected to the first and second conductive layers. The first conductive layer includes a first antenna part extending along a first direction, a first capacitor part offset from the active element in a second direction as viewed in a thickness direction of the substrate, and a first conductive part connected to the first capacitor part. The second direction is perpendicular to the thickness direction and first direction. The second conductive layer includes a second capacitor part, stacked over and insulated from the first capacitor part. The substrate includes a part exposed from the first and second capacitor parts. The first conductive part has a portion spaced apart from the first antenna part in the second direction with the exposed part therebetween as viewed in the thickness direction.

The present application relates to an electromagnetic band-gap, a directional antenna including same, and a use thereof. The electromagnetic band-gap structure and the directional antenna including same, of the present application, are lightweight and small in size, and can have excellent directivity. In addition, the electromagnetic band-gap structure and the directional antenna including same can be used for aviation electronic equipment and portable measurement equipment.

A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.

A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.

An implantable radiating structure includes a directly excited element (“DEE”) that includes a top portion, a gap portion, and a bottom portion. The gap portion is between the top portion and the bottom portion. The top portion is coupled to the bottom portion via a connector, and the top portion, the gap portion, and the bottom portion of the DEE are planar. The implantable radiating structure also includes an indirectly excited element (“IEE”) radiatively coupled to the DEE. The IEE is positioned at an angle with respect to the DEE, and the DEE is orthogonal to the IEE. Further, the implantable radiating structure is configured to be implanted inside a human body and includes a bandwidth of at least 150 megahertz and a voltage standing wave ratio of approximately 2.

Eyewear including a dipole antenna having a first leg and a second leg, wherein the first leg includes at least a portion of a battery, such as a conductive case of the battery. An antenna feed is coupled to the dipole antenna between the second leg and the battery. The second leg may comprise a flexible printed circuit (FPC), and the second leg is an active leg. The second leg has a first portion and a second portion. The first portion and the second portion may have the same physical length. The first portion may be dielectrically loaded with a high permittivity loaded material, and the second portion may be dielectrically loaded with a low permittivity loaded material.

An antenna device is disclosed, including a cavity structure having a floor portion and a perimeter wall portion connected to the floor portion. A dipole structure extends upward from a center region of the floor portion inside the cavity structure. At least one of the wall portion and the dipole structure has an opening small enough relative to an expected radio frequency wavelength to avoid affecting antenna performance.

An antenna device is disclosed, including a cavity structure having a floor portion and a perimeter wall portion connected to the floor portion. A dipole structure extends upward from a center region of the floor portion inside the cavity structure. At least one of the wall portion and the dipole structure has an opening small enough relative to an expected radio frequency wavelength to avoid affecting antenna performance.