A luminaire includes a light source positioned at a first level within a luminaire housing. The luminaire also includes a trim component positioned at a second level of the luminaire housing different from the first level. The trim component extends into a room from a ceiling surface and includes an aperture antenna that receives wireless signals and transmits wireless signals. Further, the luminaire includes a communication module that communicates wirelessly with one or more devices remote from the luminaire by controlling excitation of the aperture antenna.

An antenna includes one or more elementary antennas with non-coplanar planar loops extending about a main axis in respective inclined planes. Each elementary antenna is formed by tracks of a structure printed on a circuit support extending in the inclined plane, with two imbricated planar loops tuned on frequencies includes in two respective distinct WiFi frequency bands. With a flexible circuit support, an antenna housing of the drone includes a conformed hollow cavity comprising a plurality of inclined planar faces, which are the counterparts of the inclined planes of the elementary antennas, against which bear these latter after deformation of the flexible support.

An electronic device includes an antenna unit having an antenna body having a feed point and a ground point between a first end and a second end. The antenna body has an operating band with a resonance of a first wavelength. An electrical length of the antenna body from the feed point to the ground point is greater than or equal to ¼ and less than ½ of the first wavelength. An electrical length from the first end to the feed point is greater than or equal to ⅛ and less than or equal to ¼ of the first wavelength. An electrical length from the second end to the ground point is greater than or equal to ⅛ and less than or equal to ¼ of the first wavelength. The antenna body is adapted to operate in a slot mode and in a wire mode.

Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.

A multiple-antenna system includes a planar inverted-F antenna PIFA of a first type, which includes a metallic ground plane, a dielectric plate, a radiation patch, a probe-type feeding unit, and a metallic shorting pin. The system also includes a PIFA of a second type perpendicular to the PIFA of the first type and including a metallic ground plane, a radiation patch, a feeding unit, and a metallic shorted patch. The radiation patch is connected to the metallic ground plane by using the feeding unit and the metallic shorted patch. Isolation stub is located on an edge of a side, close to the PIFA of the second type, of the upper surface of the dielectric plate of the PIFA of the first type.

A wearable device which is mountable on a wrist of a user includes a housing including a metal structure, a display positioned within the housing, wherein the display includes a metal layer positioned within the metal structure and spaced apart from the metal structure by a given gap, a printed circuit board (PCB) positioned within the housing and including a ground region, and a control circuit positioned on the PCB and configured to feed a first point of the metal structure. The metal layer is electrically connected with the ground region of the PCB at a second point spaced from the first point by a given angle.

Disclosed herein is an antenna apparatus for use in harvesting ambient radio frequency, RF, energy. The apparatus comprises one or more RF antenna components arranged to receive RF energy for producing electricity. The one or more RF antenna components comprise a plurality of frequency filtering components, each frequency filtering component being arranged to filter a respective frequency band of the received RF energy. Also disclosed herein is an apparatus comprising a rectifying circuit arranged to convert a variable electrical signal received at an input from an associated antenna into a direct current electrical signal for supplying to an electrical energy storage unit, the antenna for use in harvesting ambient radio frequency, RF, energy. The apparatus also comprises a power management module having an input arranged to receive the direct current and control supply of the direct current to the electrical energy storage unit. The rectifying circuit comprises a plurality of transmission lines, wherein the input of the rectifying circuit and the input of the power management module are connected via the plurality of transmission lines. The power management module is arranged at least partially within a boundary defined by the plurality of transmission lines.

Disclosed herein is an antenna apparatus for use in harvesting ambient radio frequency, RF, energy. The apparatus comprises one or more RF antenna components arranged to receive RF energy for producing electricity. The one or more RF antenna components comprise a plurality of frequency filtering components, each frequency filtering component being arranged to filter a respective frequency band of the received RF energy. Also disclosed herein is an apparatus comprising a rectifying circuit arranged to convert a variable electrical signal received at an input from an associated antenna into a direct current electrical signal for supplying to an electrical energy storage unit, the antenna for use in harvesting ambient radio frequency, RF, energy. The apparatus also comprises a power management module having an input arranged to receive the direct current and control supply of the direct current to the electrical energy storage unit. The rectifying circuit comprises a plurality of transmission lines, wherein the input of the rectifying circuit and the input of the power management module are connected via the plurality of transmission lines. The power management module is arranged at least partially within a boundary defined by the plurality of transmission lines.

A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.

A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.