Timepiece with internal antenna
A timepiece includes a case that is made of a conductive material, a bezel that is made of a nonconductive material, a patch antenna that is disposed inside the case and at the back side of the dial, and a bezel that is made of a ceramic.
1. A timepiece, comprising:
a case that is made of a conductive material;
a dial that is made of a nonconductive material;
a patch antenna that is disposed inside the case and at a back side of the dial;
a bezel that is made of ceramic; and
a receiver that is disposed on a circuit board and that processes a signal received by the patch antenna;
wherein the patch antenna is disposed on an antenna substrate that is separate from the circuit board.
2. The timepiece described in claim 1 , wherein:
the patch antenna has a ceramic dielectric body and a conductive antenna part disposed on the dielectric body.
3. The timepiece described in claim 1 , further comprising:
a battery;
wherein the battery is disposed at a space where the circuit board is not disposed and the battery and the circuit board overlap in lateral view.
4. The timepiece described in claim 1 , further comprising:
a solar panel;
wherein the solar panel has a space at a position overlapping the patch antenna in plan view.
5. The timepiece described in claim 4 , wherein:
the space is rectangular.
6. The timepiece described in claim 1 , wherein:
the case is made of SUS or titanium alloy.
7. The timepiece described in claim 1 , wherein:
the dial is made of polycarbonate.
8. The timepiece described in claim 1 , further comprising:
a crystal disposed on an inside circumference side of the bezel.
9. The timepiece described in claim 1 , further comprising:
a back cover that is made of a conductive material.
10. A timepiece, comprising:
a case that is made of a conductive material;
a dial that is made of a nonconductive material;
a patch antenna that is disposed inside the case and at a back side of the dial;
a bezel that is made of ceramic; and
a controller that is disposed on a circuit board and that controls a drive mechanism;
wherein the patch antenna is disposed on an antenna substrate that is separate from the circuit board.