摘要:
According to one embodiment, a mobile wireless terminal, which makes a wireless communication with a base station accommodated in a network, includes a receiver, a communication module, and a controller. The receiver is configured to receive and frequency-convert a wireless signal transmitted from the base station, and to detect a beacon signal transmitted from the base station based on a reception signal obtained by the frequency conversion. The communication module is configured to receive a wireless signal transmitted from the base station, to acquire identification information of the base station by decoding a reception signal obtained from the wireless signal, and to communicate with the base station. The controller is configured to activate the communication module in accordance with a reception result of the beacon signal by the receiver, and to control the communication module to acquire identification information from the base station.
摘要:
According to one embodiment, a near field wireless communication device includes a receiver and a controller. The receiver is configured to obtain data by receiving a wireless signal. The controller is configured to stop the receiving operation of the receiver in the case where the receiver receives an unwanted signal.
摘要:
A complex antenna which receives or transmits a plurality of electromagnetic waves of different frequencies is provided. A first one of the electromagnetic waves is an alternating magnetic flux. The complex antenna includes a first antenna which receives or transmits the alternating magnetic flux. The complex antenna includes a second antenna arranged such that the first antenna and the second antenna overlap as viewed from a direction in which the alternating magnetic flux penetrates the first antenna. The second antenna is adapted for reducing an induction effect of a current which is induced by the alternating magnetic flux and flows in the second antenna.
摘要:
A radio apparatus configured to perform contactless communication with an external device having a first antenna, upon being arranged opposite the external device, is provided. The radio apparatus includes a case, a second antenna and a conductive element. The case has an outer face arranged opposite the external device upon the radio apparatus being arranged opposite the external device. The second antenna is provided in the case, and at least partially arranged parallel to the outer face. The conductive element is arranged close to and electrically coupled with the first antenna, upon the case being positioned opposite the external device so that the contactless communication may be performed.
摘要:
According to one embodiment, a coupler includes a ground plane, a feed point connected to the ground plane, and an element having a unicursal-pattern. An electrical length of the element is not less than a wavelength corresponding to a central frequency of a desired frequency band, and is double the wavelength or less. The element includes a first segment disposed on a first plane, and a second segment disposed on the first plane or on a second plane which is opposed to the first plane with a gap and is parallel to the first plane, the second segment extending in parallel to the first segment. An electrical length of each of the first segment and the second segment is ½ of the wavelength or more, and is the wavelength or less.
摘要:
A complex antenna which receives or transmits a plurality of electromagnetic waves of different frequencies is provided. A first one of the electromagnetic waves is an alternating magnetic flux. The complex antenna includes a first antenna which receives or transmits the alternating magnetic flux. The complex antenna includes a second antenna arranged such that the first antenna and the second antenna overlap as viewed from a direction in which the alternating magnetic flux penetrates the first antenna. The second antenna is adapted for reducing an induction effect of a current which is induced by the alternating magnetic flux and flows in the second antenna.
摘要:
According to one embodiment, an information processing apparatus includes a connection member, a first casing, a second casing, and a display panel. The first casing is connected to the connection member turnably around a first axis. The second casing is connected to the connection member turnably around a second axis parallel to the first axis. The display panel is provided on the first casing and configured to display an image according to both of a first turning angle of the first casing with respect to the connection member and a second turning angle of the second casing with respect to the connection member.