Electronic apparatus and method

#This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2018-228316, filed Dec. 5, 2018, the entire contents of which are incorporated herein by reference.

#Embodiments described herein relate generally to an electronic apparatus and method.

#Recently, a technology capable of transmitting power (supplying power) to power receiving devices by transmitting electromagnetic waves (for example, microwaves) for power supply from an electronic apparatus called a wireless power supply device has been focused.

#FIG. 1 is a graph illustrating a relationship between WPT and Victim according to a first embodiment.

#FIG. 2 is a diagram illustrating an outline of operations of WPT.

#FIG. 3 is a diagram illustrating an example of a hardware configuration of WPT.

#In general, according to one embodiment, an electronic apparatus includes transmission circuitry and a processor circuitry. The transmission circuitry is configured to transmit power with a first electromagnetic wave in a first frequency band. The processor circuitry is configured to execute a carrier sense during a first period, in at least a second frequency band different from the first frequency band. The transmission circuitry is further configured to transmit power with a second electromagnetic wave in the first frequency band in a second period following the first period, if a wireless signal is not detected by the carrier sense during the first period. The processor circuitry is configured to execute the carrier sense during a third period following the first period in the at least the second frequency band, if the wireless signal is detected by the carrier sense during the first period.

#Various embodiments will be described hereinafter with reference to the accompanying drawings.

#First, a first embodiment will be described. An electronic apparatus according to the present embodiment is a wireless power supply device including a function of transmitting (supplying) power to a power receiving device with electromagnetic waves. According to such a wireless power supply device, a power receiving device can operate with the power that is transmitted from the wireless power supply device with electromagnetic waves.