Mobile wireless communications device having improved RF immunity of audio transducers to electromagnetic interference (EMI)
First Claim
Patent Images
1. A mobile wireless communications device comprising:
- a housing;
at least one circuit board carried by the housing;
radio frequency (RF) circuitry and a processor operative therewith and carried by said at least circuit board;
an audio transducer assembly carried by said at least one circuit board and comprising an audio transducer, a transducer housing for said audio transducer, and at least one electrical contact pad member on said transducer housing and coupled to said audio transducer;
audio circuitry comprising at least one signal trace on said at least one circuit board and engaging said electrical contact pad member;
at least one first filter coupled with said at least one signal trace; and
at least one second filter mounted at said electrical contact pad member.
7 Assignments
0 Petitions
Accused Products
Abstract
A mobile wireless communications device includes a housing and circuit board carried by the housing and having radio frequency (RF) circuitry and a processor operative with each other. Audio circuitry is carried by the circuit board and an audio transducer assembly, such as a speaker, has electrical contacts that electrically engage the audio circuitry for carrying audio signals between the audio circuitry and audio transducer assembly. A filter is mounted at the audio transducer assembly and reduces radio frequency (RF) electromagnetic interference to the audio transducer assembly during device operation.
52 Citations
22 Claims
-
1. A mobile wireless communications device comprising:
-
a housing; at least one circuit board carried by the housing; radio frequency (RF) circuitry and a processor operative therewith and carried by said at least circuit board; an audio transducer assembly carried by said at least one circuit board and comprising an audio transducer, a transducer housing for said audio transducer, and at least one electrical contact pad member on said transducer housing and coupled to said audio transducer; audio circuitry comprising at least one signal trace on said at least one circuit board and engaging said electrical contact pad member; at least one first filter coupled with said at least one signal trace; and at least one second filter mounted at said electrical contact pad member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A mobile wireless communications device comprising:
-
a housing; at least one circuit board carried by the housing; radio frequency (RF) circuitry and a processor operative therewith and carried by said at least circuit board; an audio transducer assembly carried by said at least one circuit board and comprising an audio transducer, a transducer housing for said audio transducer, and at least one electrical contact pad member on said transducer housing and coupled to said audio transducer; audio circuitry comprising at least one signal trace on said at least one circuit board and engaging said electrical contact pad member; at least one first filter coupled with said at least one signal trace; and at least one second filter mounted within said transducer housing. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A method for making a mobile wireless communications device comprising:
-
providing at least one circuit board within a housing, and with radio frequency (RF) circuitry and a processor operative therewith and carried by the at least circuit board; mounting an audio transducer assembly to the at least one circuit board and comprising an audio transducer, a transducer housing for the audio transducer, and at least one electrical contact pad member on the transducer housing and coupled to the audio transducer; providing audio circuitry comprising at least one signal trace on the at least one circuit board and engaging the electrical contact pad member; coupling at least one first filter with the at least one signal trace; and mounting at least one second filter at the electrical contact pad member. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A method for making a mobile wireless communications device comprising:
-
providing at least one circuit board within a housing, and with radio frequency (RF) circuitry and a processor operative therewith and carried by the at least circuit board; mounting an audio transducer assembly to the at least one circuit board and comprising an audio transducer, a transducer housing for the audio transducer, and at least one electrical contact pad member on the transducer housing and coupled to the audio transducer; providing audio circuitry comprising at least one signal trace on the at least one circuit board and engaging the electrical contact pad member; coupling at least one first filter with the at least one signal trace; and mounting at least one second filter within the transducer housing. - View Dependent Claims (20, 21, 22)
-
Specification