Mobile communication devices having high frequency noise reduction and methods of making such devices
AssigneeKyocera Wireless Corp.
InventorTimothy Forrester
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Abstract
In accordance with the disclosed embodiment of the present invention, there is provided a technique to control and manage where the currents flow produced by noise producing components such as transmitters, and how to specifically exclude them from critical areas, such as where noise sensitive components are disposed. Such noise sensitive components may include oscillators and other components. According to a disclosed example of the present invention, an electrically-isolated area at least partially surrounds one or more noise-sensitive components. As disclosed herein, a gap in the elongated area receives one or more traces such as power plane, ground plane and signal traces for the partially surrounded component or components.
Claims5
A mobile communication device, comprising:
- a printed wiring board assembly having at least one high-power noise-producing component and at least one noise sensitive component, said assembly further including signal traces;
- means defining an electrically isolated area being configured to at least partially surround at least one of said components, said isolated area is in the form of a narrow band and generally U-shaped;
- and
- means defining a gap in said area for receiving said traces for the partially surrounded at least one component.
Dependencies are inferred from the claim text.