Electronic apparatus with antennas
View Patent ↗According to one embodiment, an electronic apparatus includes a housing in which an electrically conductive layer is formed on an inner surface of the housing, a flat-panel display which is accommodated in the housing, a first antenna which is disposed on the conductive layer, a part of the first antenna being located more on an outer peripheral side than a side of the conductive layer, and a second antenna which is disposed on the conductive layer, a part of the second antenna being located more on the outer peripheral side than the side of the conductive layer. The conductive layer includes a notch which is formed in a predetermined position of a side of the conductive layer, which is located between the first antenna and the second antenna, the notch having a length of ¼ of a wavelength corresponding to a resonance frequency of the first antenna.
1. An electronic apparatus comprising:
a housing in which an electrically conductive layer is formed on an inner surface of the housing;
a flat-panel display which is accommodated in the housing, with a back surface of the flat-panel display being opposed to the electrically conductive layer;
a first antenna which is disposed on the electrically conductive layer, a part of the first antenna being located more on an outer peripheral side than a side of the electrically conductive layer; and
a second antenna which is disposed on the electrically conductive layer, a part of the second antenna being located more on the outer peripheral side than the side of the electrically conductive layer,
wherein the electrically conductive layer includes a notch formed in a predetermined portion of a side of the electrically conductive layer, which is located between the first antenna and the second antenna, the notch having a length of ¼ of a wavelength corresponding to a resonance frequency of the first antenna.
2. The electronic apparatus according to claim 1 , wherein the first antenna further has another resonance frequency, and
the electrically conductive layer further includes another notch which is formed in a predetermined position on the side, that is located between the first antenna and the second antenna, said another notch having a length of ¼ of a wavelength corresponding to said another resonance frequency of the first antenna.
3. The electronic apparatus according to claim 1 , further comprising:
a first wireless communication module which is electrically connected to the first antenna and executes wireless communication by a first wireless communication scheme; and
a second wireless communication module which is electrically connected to the second antenna and executes wireless communication by a second wireless communication scheme.
4. The electronic apparatus according to claim 3 , wherein a transmission power of the first wireless communication module is higher than a transmission power of the second wireless communication module.
5. The electronic apparatus according to claim 1 , wherein a distance between the first antenna and the second antenna is an integer number of times of the length of ¼ of the wavelength which corresponds to the resonance frequency of the first antenna.
6. The electronic apparatus according to claim 1 , wherein the electrically conductive layer is formed in a rectangular shape,
the first antenna and the second antenna are disposed on an upper side of the electrically conductive layer, and
the notch is formed in a predetermined position of the upper side, which is located between the first antenna and the second antenna.
7. The electronic apparatus according to claim 6 , wherein the notch includes a first notch portion extending from the predetermined position on the upper side toward a lower side of the electrically conductive layer, and a second notch portion extending from an end of the first notch portion toward a lateral side of the electrically conductive layer.
8. The electronic apparatus according to claim 6 , wherein the first antenna further has another resonance frequency, and
the electrically conductive layer further includes another notch which is formed in a predetermined position of the upper side, that is located between the first antenna and the second antenna, said another notch having a length of ¼ of a wavelength corresponding to said another resonance frequency of the first antenna.
9. The electronic apparatus according to claim 1 , wherein the electrically conductive layer is formed in a rectangular shape,
the first antenna is disposed on a lateral side of the electrically conductive layer, and the second antenna is disposed on an upper side of the electrically conductive layer, and
the notch is formed in one of a predetermined position of the lateral side, which is located between the first antenna and the second antenna, and a predetermined position of the upper side, which is located between the first antenna and the second antenna.