An electronic device is provided. The electronic device may comprise a housing comprising: a front plate facing a first direction, a back plate facing a second direction opposite to the first direction, and a side surface which surrounds the front plate and the back plate, wherein the front plate includes a screen area and a bezel area; a display exposed through the screen area of the front plate; a first circuit board disposed between the display and the back plate and including a first surface facing the display and a second surface facing the back plate; a first antenna array overlaid on the bezel area in the first surface; a second antenna array disposed on the second surface; and a wireless communication circuit disposed on the first circuit board and electrically connected with the first antenna array and the second antenna array, wherein the wireless communication circuit is configured to: form a beam which has directionality in the first direction using the first antenna array and form a beam which has directionality in the second direction using the second antenna array.

A battery management system includes a primary module in wireless communication with a plurality of sensing, or secondary, modules over a range of frequencies within a predetermined frequency band. Each of the primary module and the sensing modules can be configured to transmit with an antenna polarization setting chosen from a plurality of polarization settings. Each of the sensing modules is configured to communicate with the primary with a predetermined one of its polarization settings for each channel. The primary module is also configured to communicate with a respective secondary module with a predetermined polarization setting for each channel.

A battery management system includes a primary module in wireless communication with a plurality of sensing, or secondary, modules over a range of frequencies within a predetermined frequency band. Each of the primary module and the sensing modules can be configured to transmit with an antenna polarization setting chosen from a plurality of polarization settings. Each of the sensing modules is configured to communicate with the primary with a predetermined one of its polarization settings for each channel. The primary module is also configured to communicate with a respective secondary module with a predetermined polarization setting for each channel.

A combination antenna for mobile radio or for mobile radio and broadcasting services comprises at least one plastic film arranged above a base plate and coated with conductive antenna structures; and at least one antenna connection point coupled to antenna structures on the electrically conductive base plate as an electrical counterweight of the combination antenna.

A combination antenna for mobile radio or for mobile radio and broadcasting services comprises at least one plastic film arranged above a base plate and coated with conductive antenna structures; and at least one antenna connection point coupled to antenna structures on the electrically conductive base plate as an electrical counterweight of the combination antenna.

An antenna apparatus includes: a first ground layer; a second ground layer disposed on a surface of the first ground layer; an antenna pattern spaced apart from the first and second ground layers in a direction of the surface, and configured to transmit and/or receive a radio frequency (RF) signal; and a feed line electrically connected to the antenna pattern and extending from the antenna pattern toward the first ground layer in the direction of the surface, wherein the first ground layer includes a first region recessed, relative to the second ground layer, in the direction of the surface.

An antenna apparatus includes: a first ground layer; a second ground layer disposed on a surface of the first ground layer; an antenna pattern spaced apart from the first and second ground layers in a direction of the surface, and configured to transmit and/or receive a radio frequency (RF) signal; and a feed line electrically connected to the antenna pattern and extending from the antenna pattern toward the first ground layer in the direction of the surface, wherein the first ground layer includes a first region recessed, relative to the second ground layer, in the direction of the surface.

Disclosed herein are antenna boards, antenna modules, and communication devices. For example, in some embodiments, an antenna module may include: an antenna patch support including a flexible portion; an integrated circuit (IC) package coupled to the antenna patch support; and an antenna patch coupled to the antenna patch support.

Disclosed herein are antenna boards, antenna modules, and communication devices. For example, in some embodiments, an antenna module may include: an antenna patch support including a flexible portion; an integrated circuit (IC) package coupled to the antenna patch support; and an antenna patch coupled to the antenna patch support.

An antenna includes a control unit and first to Nth antenna elements. N is an integer that is four or more. The control unit controls input of signals to each antenna element. Among each antenna element, open ends of the second to Nth antenna elements extend in directions different from a direction in which the first antenna element extends. Among signals input to each antenna element, signals input to the second to Nth antenna elements have phases different from a phase of a signal input to the first antenna element. The control unit controls a state to be in a first state, where signals are input to each antenna element to radiate a circularly polarized wave in a first direction or a second state, where signals are input to one or more of the antenna elements to radiate a linearly polarized wave in a direction different from the first direction.