Timepiece with a wireless function

摘要

A timepiece with a radio function assures both a good appearance and antenna performance. The GPS wristwatch 1 has a movement 110 for displaying the time, a conductive external case 101 that houses the movement 110, a crystal 130 that is disposed on the face side of the external case 101 and covers the surface of the movement 110, a C-shaped conductive antenna electrode 112, an annular dielectric substrate 111, an GPS antenna 11 disposed between the movement 110 and the crystal 130, and a conductive, round solar panel support substrate 120 disposed between the movement 110 and GPS antenna 11. The outside diameter of the solar panel support substrate 120 is smaller than the inside diameter of the external case 101 on the plane where the solar panel support substrate 120 is disposed.

主权项

1. A timepiece with a wireless function, comprising:
a substantially annular antenna configured to receive satellite signal transmissions having a predefined first wavelength, said antenna having a conductive antenna electrode and a dielectric substrate, said dielectric substrate being configured to shorten the wavelength of satellite signal transmissions that pass through it to define shortened satellite signals having a second wavelength shorter than the first wavelength, the antenna electrode having an antenna wire configured to receive the shortened satellite signals; a movement that displays time and has a reception unit configured to process the received shorten satellite signals; a conductive case that houses the movement and is electrically connected to a ground terminal of the reception unit; a crystal that is disposed on the face side of the case and covers the face side of the movement, said antenna wire being disposed between the movement and the crystal in a lateral view; and a conductive conductor plate that is disposed between the movement and the antenna wire in the lateral view, and has an outside diameter that is smaller than an inside diameter of the case on the plane where the conductor plate is disposed; wherein a distance between the conductor plate and the antenna wire is not greater than 0.1 times the second wavelength of the shortened satellite signals.