Portable wireless apparatus
There is provided with a portable wireless apparatus including a first casing including a first conductor plate; a second casing including a second conductor plate, wherein the first casing and the second casing being capable to rotate around a feed point, a coupler which couples the first casing and the second casing and a feed point which feeds power to the first and second conductor, disposed in close vicinity to the coupler, wherein, when the first and second conductor plates are rotated in same direction by 90 degrees around the feed point taken as a fulcrum in a state in which the two casings are opened to each other, the first and second conductor plates substantially coincide with shapes of spaces sandwiched between the first and second conductor plates before the rotation.
1. A portable wireless apparatus comprising:
a first casing including a first conductor plate;
a second casing including a second conductor plate;
a coupler which couples the first casing and the second casing; and
a feed point which feeds power to the first and second conductor, disposed in close vicinity to the coupler,
wherein the first casing and the second casing are rotatable around the feed point, and
wherein when the first and second conductor plates are rotated in same direction by 90 degrees around the feed point taken as a fulcrum in a state in which the two casings are opened to each other, the first and second conductor plates substantially coincide with shapes sandwiched between the first and second conductor plates before the rotation.
2. The portable wireless apparatus according to claim 1 , wherein when the first and second conductor plates are rotated in the same direction by 90 degrees, then at least in a circle having the feed point as a center and having a radius which is at least one fourth of a wavelength corresponding to a lowest frequency in a frequency band in use, the first and second conductor plates substantially coincide with shapes of spaces sandwiched between the first and second conductor plates before the rotation.
3. The portable wireless apparatus according to claim 2 , wherein when the first and second conductor plates are rotated in the same direction by 90 degrees, then at least outside a circle having the feed point as a center and having a radius which is one tenth or less of a wavelength corresponding to a highest frequency in the frequency band in the use, the first and second conductor plates substantially coincide with shapes of spaces sandwiched between the first and second conductor plates before the rotation.
4. The portable wireless apparatus according to claim 1 , wherein when the first and second conductor plates are rotated in the same direction by 90 degrees, then at least outside a circle having the feed point as a center and having a radius which is one tenth or less of a wavelength corresponding to a highest frequency in the frequency band in the use, the first and second conductor plates substantially coincide with shapes of spaces sandwiched between the first and second conductor plates before the rotation.
5. The portable wireless apparatus according to claim 1 , further comprising a feed line to feed to the feed point.
6. The portable wireless apparatus according to claim 5 , further comprising an impedance conversion circuit between the feed line and the feed point.
7. The portable wireless apparatus according to claim 5 , wherein the feed line includes a coaxial line or a microstrip line.
8. The portable wireless apparatus according to claim 5 , wherein the first or second casing includes an internal antenna inside, and when two casings are closed to each other, the feed line is separated from the feed point and connected to a feed point of the internal antenna.
9. The portable wireless apparatus according to claim 1 , wherein the coupler is configured so as to be able to fold the two casings to each other.
10. The portable wireless apparatus according to claim 1 , wherein the coupler is configured so as to be able to slide the second casing with respect to the first casing.
11. The portable wireless apparatus according to claim 1 , wherein the coupler is configured so as to be able to slide and rotate the second casing with respect to the first casing.
12. The portable wireless apparatus according to claim 1 , wherein, in a state in which the two casings are opened to each other, the first and second conductor plates are located on same plane.