Mobile wireless communications device with reduced interfering energy into audio circuit and related methods
First Claim
1. A mobile wireless communications device comprising:
- a housing;
a circuit board carried by the housing and including radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other;
a receiver speaker and a microphone carried by the housing;
audio circuitry carried by the circuit board and operative with the RF circuitry and processor and including a microphone audio switch and a receiver speaker audio switch and audio connection lines carried by the circuit board and interconnecting the processor and audio switches and operatively connected to said receiver speaker and microphone; and
a filter 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.
7 Assignments
0 Petitions
Accused Products
Abstract
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.
49 Citations
25 Claims
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1. A mobile wireless communications device comprising:
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a housing;
a circuit board carried by the housing and including radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other;
a receiver speaker and a microphone carried by the housing;
audio circuitry carried by the circuit board and operative with the RF circuitry and processor and including a microphone audio switch and a receiver speaker audio switch and audio connection lines carried by the circuit board and interconnecting the processor and audio switches and operatively connected to said receiver speaker and microphone; and
a filter 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile wireless communications device comprising:
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a housing;
a circuit board carried by the housing and including radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other;
a receiver speaker and a microphone carried by the housing;
audio circuitry carried by the circuit board and operative with the RF circuitry and processor and including a microphone audio switch and a receiver speaker audio switch and audio connection lines carried by the circuit board and interconnecting the processor and microphone audio switch and receiver speaker audio switch and operatively connected to said receiver speaker and microphone;
a jack carried by the housing;
jack connection lines carried by said circuit board and operatively connected to said processor and jack;
a jack filter operative with the jack connection lines;
an operational amplifier circuit connected between said jack filter and processor; and
a filter operative with the audio connection lines and operatively connected to at least one of the microphone audio switch or receiver speaker audio switch such that said jack filter and filter reduce conducted and radiated interfering RF energy from coupling to the audio circuitry. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for making a mobile wireless communications device, which comprises:
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providing a housing, a circuit board carried by the housing, radio frequency (RF) circuitry and a processor carried by the circuit board and operative with each other, a receiver speaker and a microphone carried by the housing, audio circuitry carried by the circuit board and operative with the RF circuitry and processor and including a microphone audio switch and a receiver speaker audio switch, and audio connection lines carried by the circuit board and interconnecting the processor and microphone audio switch and receiver speaker audio switch and operatively connected to said receiver speaker and microphone; and
reducing conducted and radiated interfering RF energy from coupling to the audio circuitry by inserting a filter into the audio connection lines such that the filter is operatively connected to at least one microphone audio switch or receiver speaker audio switch. - View Dependent Claims (22, 23, 24, 25)
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Specification