Antenna device, electronic device, and wireless communication method

#This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2018-120788, filed Jun. 26, 2018, the entire contents of which are incorporated herein by reference.

#Embodiments described herein relate generally to an antenna device, an electronic device, and a wireless communication method.

#In recent years, various electronic devices include a wireless communication function. Frequencies used for the wireless communication become higher when the data amount for communication become greater. For example, a high frequency band such as super high frequency (SHF) band or extra high frequency (EHF) band of which wavelength is shorter than that of ultra high frequency (UHF) band is now used. When the frequency becomes high, straightness of radio waves becomes excellent, and a gain of a certain direction becomes greater than gains of other directions, and thus, the radio waves have directivity. A single antenna has difficulty in controlling the directivity. Array antennas including a plurality of arrayed antenna elements can control direction and width of beam by controlling a phase of each antenna element, and can transmit and receive omnidirectional radio waves.

#A general architecture that implements the various features of the embodiments will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate the embodiments and not to limit the scope of the invention.

#FIGS. 1A, 1B, 1C, and 1D are perspective views of an example of an electronic device 8 according to an embodiment.

#FIGS. 2A and 2B are perspective views of an example of the arrangement of array antennas 18a, 18b, 18c, and 18d in the electronic device 8 according to the embodiment.

#Various embodiments will be described hereinafter with reference to the accompanying drawings. The disclosure is merely an example and is not limited by contents described in the embodiments described below. Modification that is easily conceivable by a person of ordinary skill in the art comes within the scope of the disclosure as a matter of course. In order to make the description clearer, the sizes, shapes and the like of the respective parts may be changed and illustrated schematically in the drawings as compared with those in an accurate representation. Constituent elements corresponding to each other in a plurality of drawings are denoted by similar reference numerals and their detailed descriptions may be omitted unless necessary.

#In general, according to one embodiment, an antenna device includes at least one terminal, a plurality of array antennas, a plurality of sensors corresponding to the plurality of array antennas, and a selection circuit. Each sensor of the plurality of sensors measures a temperature of an array antenna corresponding to the sensor among the plurality of array antennas. The selection circuit selects at least one array antenna from the plurality of array antennas, based at least in part on the temperature measured by each sensor. The at least one array antenna is connected to a wireless communication circuit via the at least one terminal.

#[Overall Structure]