Patent ID: 8493817
Filing Date: 2013-07-23
Classification: G01S,G04R

Abstract:
1. An electronic timepiece that uses electrical power produced by photovoltaic generation as a power source and has a function for receiving microwave signals, comprising: a dial for displaying time information on a front surface thereof; a solar cell disposed with at least a part of the light-receiving surface opposing at least a part of the back side of the dial that receives light passing through the dial and produces electrical power by photovoltaic generation; a patch antenna that is disposed so that at least part of its signal receiving surface opposes at least a part of the back surface of the dial, and receives microwave signals through the dial; and a timepiece part of which at least a portion is made from a metallic member; wherein the solar cell is not disposed in space between the back side of the dial and the signal receiving surface of the antenna; and wherein the timepiece part is disposed so that the distance between the antenna and the timepiece part is greater than or equal to the thickness of the antenna in the direction perpendicular to the signal receiving surface.