Patent ID: 8831539

Claim:
A mobile wireless communications device comprising: a housing; a circuit board carried by the housing and having radio frequency (RF) circuitry and a power amplifier carried by the circuit board; a microphone mounted on the circuit board and operatively connected to the RF circuitry; an antenna carried within the housing and operative with the RF circuitry; an RF shield surrounding and isolating the microphone from the RF circuitry, power amplifier, and antenna, and shielding the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier, the RF shield having a first sound opening over the microphone; and a housing cover extending over the RF shield and having a second sound opening, and an associated assembly in contact with the RF shield and configured to provide acoustic sealing, and coupling of the second sound opening to the first sound opening via an acoustic channel configured to allow a certain frequency response.