Mobile wireless communications device with reduced...

H - Electricity – 04 – W

Patent

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Details

H04W 88/02 (2009.01) H04B 1/10 (2006.01)

Patent

CA 2578312

A mobile wireless communications device includes a housing and circuit board carried by the housing. RF circuitry and a processor are operative with each other and carried by the circuit board. A receiver speaker and microphone are carried by the housing. Audio circuitry is carried by the circuit board and operative with the RF circuitry and processor. A microphone audio switch and receiver speaker audio switch are carried by the circuit board and are connected with audio connection lines that interconnect the processor. A filter is operative with the audio connection lines and operatively connected to at least one of the microphone audio switch or receiver speaker audio switch to reduce conducted and radiated interfering RF energy from coupling into the audio circuitry.

Dispositif mobile de communication sans fil comprenant un boîtier avec carte de circuits imprimés. Cette carte porte les circuits à radiofréquence et le processeur, lesquels fonctionnent ensemble. Le boîtier comprend un haut parleur récepteur et un microphone. Les circuits audio sont montés sur la carte de circuits imprimés et fonctionnent avec les circuits à radiofréquence et le processeur. Un commutateur audio pour microphone et un commutateur audio pour haut-parleur récepteur sont tout deux montés sur la carte de circuits imprimés et sont connectés par des lignes de connexion, en interconnexion avec le processeur. Un filtre collabore avec les lignes de connexion audio et est relié fonctionnel à au moins l'un des deux commutateurs audio, ce qui réduit les interférences dans les circuits audio de l'énergie de radiofréquence conduite et rayonnée en provenance du couplage.

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