Mobile wireless communications device with reduced interfering energy into audio circuit and related methods

摘要

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.

主权项

1. An electronic device comprising:
an audio input device; an audio output device; a processor; at least one wireless transceiver coupled to said processor; audio connection lines; a first audio switch coupled to said audio output device and said processor via said audio connection lines; a second audio switch coupled to said audio input device and said processor via said audio connection lines; a jack and associated jack connection lines coupled to said processor and at least one of said first and second audio switches; and at least one interference filter coupled to said audio connection lines.