Antenna device integrable in an electronic instrument case

Abstract

An antenna device designed to be integrated in a case (2) in which at least one part is electrically conductive, particularly in a case (2) of a wearable electronic instrument (1), the device (3) including: a first antenna part (4A) designed to be connected by a first connector (8A) to a function module (7) positioned on a circuit board (10) inside the case (2), and a second antenna part (4B) includinng a ground plane having the at least electrically conductive part of the case (2) to which a second connector (8B) in the first antenna part (4A) is connected via an electronic module (4C) for tuning a resonance frequency and increasing the efficiency of the antenna device (3) according to an angular position of the device (3).

Dependencies are inferred from the claim text.