Patent ID: 7986979
Filing Date: 2011-07-26
Classification: H04M

Abstract:
1. A wireless headset having improved immunity to RF electromagnetic interference produced from wireless communications devices comprising: a headset body adapted to be worn by a user; a microphone carried by the headset body for receiving voice signals from the user; an earpiece carried by the headset body for directing voice signals into an ear canal of the user; an antenna carried by the headset body for receiving wireless communications signals; RF and audio circuitry mounted within the headset body and connected to the antenna for receiving and transmitting wireless communications signals, an audio CODEC connected to said RF and audio circuitry, and further comprising at least one circuit board mounted within the headset body and audio connection lines formed as circuit traces on the at least one circuit board and connected between said CODEC and said earpiece and connected between said CODEC and said microphone; and a filter connected into each of the audio connection lines at the earpiece and microphone and operative for reducing the RF coupling from a wireless communications device wherein each signal trace includes a respective filter serially connected into each signal trace and a ferrite bead formed on a circuit trace and having a length as an overcoat on the circuit trace sufficient for enabling RF suppression.