Patent ID: 7742614
Filing Date: 2010-06-22
Classification: H01Q,H04R

Abstract:
1. Communication device adapted for placement in a users ear, the device comprising: a custom-made shell part enclosing an input transducer for receiving an input signal, a signal processing device and an output transducer for providing a signal perceivable as sound, a battery located at a surface part of the shell which is facing away from the head of the user, and a transmission and reception circuit for transmission and/or reception of electromagnetic energy, the transmission and reception circuit including a planar antenna for radiating and/or receiving electromagnetic energy, the antenna being disposed in relation to the battery such that the antenna has a first surface facing away from the battery and a second surface facing towards the battery, the antenna and battery further being situated in close proximity to each other such that the battery is an electromagnetic shield between the antenna and other parts of the communication device circuitry, thereby preventing the antenna from becoming de-tuned as a result of variations in the position of the other circuitry in the device, and also such that the battery is a ground plane for the antenna.