A phase shifter circuit and a power divider are disclosed. The phase shifter circuit provides a (90/N)-degree phase shift for a signal with two or more frequencies, where N is an integer. The phase shifter circuit includes a first inductor, a first capacitor, a second inductor and a second capacitor. The first inductor is grounded, and is coupled to the first capacitor in series. The second inductor is grounded, and is coupled to the second capacitor in series. A first node between the first capacitor and the first inductor is coupled to a node between a second node between the second capacitor and the second inductor. The power divider includes plural circuit blocks cascaded in series. Each circuit block provides a (90/N)-degree phase shift for a signal with two or more operating frequencies.

An electronic device having a slot antenna is disclosed. The electronic device includes a main unit chassis and a display chassis. The main unit chassis includes a base cover formed of a conductor, and a keyboard and a keyboard cover formed of a dielectric. The base cover includes a slot. The display chassis is connected to the main unit chassis through a hinge. The upper surface of the display chassis is covered by a display rear cover formed of a conductor. The lower surface of the display chassis is covered by a display unit and a bezel formed of a dielectric. A slot antenna is formed in a bezel area of the display rear cover. The slot of the base cover is located at a position that opposes a slot of the slot antenna when the display rear cover of the display chassis is overlapping with the main unit chassis.

An electronic device having a slot antenna is disclosed. The electronic device includes a main unit chassis and a display chassis. The main unit chassis includes a base cover formed of a conductor, and a keyboard and a keyboard cover formed of a dielectric. The base cover includes a slot. The display chassis is connected to the main unit chassis through a hinge. The upper surface of the display chassis is covered by a display rear cover formed of a conductor. The lower surface of the display chassis is covered by a display unit and a bezel formed of a dielectric. A slot antenna is formed in a bezel area of the display rear cover. The slot of the base cover is located at a position that opposes a slot of the slot antenna when the display rear cover of the display chassis is overlapping with the main unit chassis.

A semiconductor package device includes a first substrate, a second substrate and a first spacer. The first substrate includes a first divided pad. The second substrate includes a second divided pad disposed above the first divided pad. The first spacer is disposed between the first divided pad and the second divided pad. The first spacer is in contact with the first divided pad and the second divided pad.

A semiconductor package device includes a first substrate, a second substrate and a first spacer. The first substrate includes a first divided pad. The second substrate includes a second divided pad disposed above the first divided pad. The first spacer is disposed between the first divided pad and the second divided pad. The first spacer is in contact with the first divided pad and the second divided pad.

An antenna includes a planar ground plane, a planar exciter, and a plurality of passive elements. The planar ground plane and the planar exciter are disposed orthogonal to a longitudinal axis of the antenna. The planar exciter is spaced apart from the ground plane. The planar exciter is configured to excite right-hand circularly-polarized electromagnetic radiation. The planar exciter is configured to excite first currents orthogonal to the longitudinal axis and substantially no current parallel to the longitudinal axis. The plurality of passive elements is symmetrically disposed azimuthally about the longitudinal axis and spaced apart from the planar exciter. The plurality of passive elements is electromagnetically coupled to the planar exciter. The plurality of passive elements is configured to excite second currents parallel to the longitudinal axis and third currents orthogonal to the longitudinal axis.

An antenna includes a planar ground plane, a planar exciter, and a plurality of passive elements. The planar ground plane and the planar exciter are disposed orthogonal to a longitudinal axis of the antenna. The planar exciter is spaced apart from the ground plane. The planar exciter is configured to excite right-hand circularly-polarized electromagnetic radiation. The planar exciter is configured to excite first currents orthogonal to the longitudinal axis and substantially no current parallel to the longitudinal axis. The plurality of passive elements is symmetrically disposed azimuthally about the longitudinal axis and spaced apart from the planar exciter. The plurality of passive elements is electromagnetically coupled to the planar exciter. The plurality of passive elements is configured to excite second currents parallel to the longitudinal axis and third currents orthogonal to the longitudinal axis.

An electronic device is provided. The electronic device includes a first conductive frame, a second conductive frame, a split portion, a conductive structure disposed inside the electronic device, a first conductive member, and a wireless communication circuit electrically connected to the first conductive frame, the second conductive member, a conductive portion, and the first conductive member, and the second conductive member, wherein the wireless communication circuit may be configured to transmit and/or receive a radio signal by using at least a portion of an electric path provided by the first conductive frame, the first conductive member, the second conductive member, the conductive portion, and the conductive structure by feeding power to the first conductive member and/or the second conductive member.

An electronic device is provided. The electronic device includes a first conductive frame, a second conductive frame, a split portion, a conductive structure disposed inside the electronic device, a first conductive member, and a wireless communication circuit electrically connected to the first conductive frame, the second conductive member, a conductive portion, and the first conductive member, and the second conductive member, wherein the wireless communication circuit may be configured to transmit and/or receive a radio signal by using at least a portion of an electric path provided by the first conductive frame, the first conductive member, the second conductive member, the conductive portion, and the conductive structure by feeding power to the first conductive member and/or the second conductive member.

A wireless headset with a headband that is constructed and arranged to fit over a user's head. The headband includes an antenna that is adapted to transmit and receive wireless signals, and electronic signal processing hardware that is electrically matched to the antenna. The headset also includes earcups carried by the headband, each earcup arranged to sit on, over or near one ear of the user. Each earcup has an audio transducer.