A mobile device for reducing SAR (Specific Absorption Rate) includes a ground element, a first radiation element, a second radiation element, and a third radiation element. The ground element has a slot. The first radiation element is coupled to a feeding point. The second radiation element is coupled to the ground element. The third radiation element is coupled to the feeding point and has a hollow portion. The third radiation element is substantially surrounded by the ground element, the first radiation element, and the second radiation element. An antenna structure is formed by the ground element, the first radiation element, the second radiation element, and the third radiation element.

Provided is an electronic device that includes first and second housings, a display, a connecting member connecting the first and second housings, first and second conductive members, and a wireless communication circuit. The first housing includes a first side facing a first direction, a second side facing a second direction opposite to the first direction, and a first lateral side surrounding at least part of a space between the first side and the second side. The second housing includes a third side facing a third direction, a fourth side facing a fourth direction opposite to the third direction, and a second lateral side surrounding at least part of a space between the third side and the fourth side. The connecting member connects the first and second housings such that folding of the first and second housings results in the first and second lateral sides abutting against each other.

Provided is an electronic device that includes first and second housings, a display, a connecting member connecting the first and second housings, first and second conductive members, and a wireless communication circuit. The first housing includes a first side facing a first direction, a second side facing a second direction opposite to the first direction, and a first lateral side surrounding at least part of a space between the first side and the second side. The second housing includes a third side facing a third direction, a fourth side facing a fourth direction opposite to the third direction, and a second lateral side surrounding at least part of a space between the third side and the fourth side. The connecting member connects the first and second housings such that folding of the first and second housings results in the first and second lateral sides abutting against each other.

An antenna device includes: a pair of first elements that are arranged on a first plane; and a pair of second elements that are arranged on a second plane parallel to the first plane such that a polarized wave direction of the pair of second elements is orthogonal to that of the pair of first elements. Each element of the pair of first elements and the pair of second elements includes a portion that acts as a self-similarity antenna or an antenna that acts based on similar operating principle to the self-similarity antenna. In one embodiment, each element of the pair of first elements and the pair of second elements includes two arms that extend in a direction away from each other from a proximal end portion to which a feed point is connectable.

A multi-mode microwave waveguide blade sensing system includes a transceiver, a waveguide, and a probe sensor. The transceiver generates a microwave energy signal having a first waveguide mode and a different second waveguide mode. The waveguide includes a first end that receives the microwave energy signal. The probe sensor includes a proximate end that receives the microwave energy signal from the transceiver and a distal end including an aperture that outputs the microwave energy signal. The probe sensor directs the microwave energy signal at a first direction based on the first waveguide mode and a different second direction different based on the second waveguide mode. The probe sensor receives different levels of reflected microwave energy based at least in part on a location at which the at least one microwave energy signal is reflected from the machine.

A wearable device includes a metal frame, a printed circuit board PCB, and a first feeding element, where a slot is formed between the metal frame and the PCB. The metal frame includes a first feed point, a first ground point, and a second ground point, and the metal frame is grounded at the first ground point and the second ground point. The metal frame is divided into a first area and a second area by the first ground point and the second ground point, and a circumferential length corresponding to the first area is greater than a circumferential length corresponding to the second area. The first feed point is disposed in the first area, and a distance between the first feed point and the first ground point along the metal frame is less than one third of the circumferential length corresponding to the first area.

A multi-band dual-polarized antenna includes a first radiator and a second radiator, each having a rotationally symmetric structure. The first radiator has two feeding ports that are 90° rotationally symmetric with respect to a geometric center of the first radiator. The second radiator is annular, the first radiator and the second radiator are coplanar, the first radiator is disposed in the second radiator, and an annular gap is provided between the first radiator and the second radiator.

Apparatuses, methods, and systems for a modular eyewear antenna assembly, are disclosed. One modular eyewear antenna assembly includes an eyewear housing including a front frame and a pair of eyewear temple arms, wherein a physical size and shape of each of the temple arms is selectable from a plurality eyewear assembly SKU sizes and shapes, a printed circuit board (PCB) including a controller and a radio, wherein the PCB extends along at least one of the temple arms, wherein the PCB has a fixed size that is adapted for placement within one of the temple arms, and a modular antenna structure including a planar antenna, wherein the modular antenna structure interfaces with the PCB for providing a wireless propagation path for the radio, wherein the modular antenna structure has a fixed size that is adapted for placement along with the PCB within one of the temple arms.

Phased arrays to be used for Tx and Rx communications in different frequency bands are disclosed. The phased arrays presented herein are non-uniformly thinned half-duplex phased arrays with dual-band antenna elements. Such phased arrays are “half-duplex” in that they are configured for communication in one direction at a time, i.e., either for Tx or for Rx, while utilizing a common array. Such phased arrays are “with dual-band antenna elements” in that, in addition to using antenna elements configured for Tx or for Rx only, they implement some antenna elements that are configured for both Tx and Rx. Such phased arrays are “thinned” in that they are formed according to a method of optimizing array geometry known as “thinning.” Such phased arrays are thinned “non-uniformly” in that different antenna elements used for Tx may have different numbers of nearest and/or second-nearest neighbor antenna elements used for Rx, or vice versa.

Phased arrays to be used for Tx and Rx communications in different frequency bands are disclosed. The phased arrays presented herein are non-uniformly thinned half-duplex phased arrays with dual-band antenna elements. Such phased arrays are “half-duplex” in that they are configured for communication in one direction at a time, i.e., either for Tx or for Rx, while utilizing a common array. Such phased arrays are “with dual-band antenna elements” in that, in addition to using antenna elements configured for Tx or for Rx only, they implement some antenna elements that are configured for both Tx and Rx. Such phased arrays are “thinned” in that they are formed according to a method of optimizing array geometry known as “thinning.” Such phased arrays are thinned “non-uniformly” in that different antenna elements used for Tx may have different numbers of nearest and/or second-nearest neighbor antenna elements used for Rx, or vice versa.