Patent ID: 7382597

Claim:
A bondwire decoupling filter 300 for filtering RF noise received by a transceiver bus 330 of a transceiver 303 connected to a device 302 to be protected from RF noise, said filter comprising: an external capacitor 315 being adapted to receive an output from a voltage regulator device 302 to be protected from said RF noise; a first pair of bondwires 305 , 307 each having a respective first and second end, both of said first pair of bondwires being connected to said external capacitor 315 at respective first ends, and a first bondwire 307 of the first pair of bondwires 305 , 307 is connected to the output of the voltage regulator 302 and an input of a transceiver 303 at said respective second end; a second bondwire 305 of the first pair of bondwires 305 , 307 being connected to one of an output 308 of transceiver 303 , and a transceiver bus 330 at said respective second end; a second pair of bondwires 310 , 312 each having a respective first and second end, both of which are connected to a ground at respective first ends, and a first bondwire 310 of the second pair of bondwires 310 , 312 is connected to one of an output 309 of transceiver 303 , and a transceiver bus 330 at said respective second end; a second bondwire 312 of the second pair of bondwires is connected to the ground reference of voltage regulator 302 and an input of a transceiver 303 at said respective second end; wherein of said first pair of bondwires and said second pair of bondwires all have a predetermined amount of inductance, and a flow of RF noise travels from first bondwire 305 of the first pair of bondwires, to capacitor 315 and to first bondwire 310 of the second pair of bondwires.