Description:RELATED APPLICATION
[0001] The present application claims priority to U.S. Non-Provisional Patent Application No. 18/361,952 filed on 17 July 2023 and titled “ENCAPSULATED WIRELESS ANTENNA FOR REDUCING THE IMPACT OF RADIO FREQUENCY INTERFERENCE” the entire disclosure of which is hereby incorporated by reference.
Technical Field
[0002] This disclosure relates generally to wireless antennas, and in particular, shielding wireless antennas from radio frequency interference.
Background
[0003] In computing systems such as with desktop computers or workstation computers (generally, PCs), it may be challenging to integrate a wireless antenna intended for high-frequency bands, such as the Wi-Fi 6E frequency band (e.g., 6 - 7.1 GHz), due to strong sources of radio frequency (RF) interference (RFI) originating from the computing system itself and impacting the performance of the wireless antenna in the high-gigahertz frequency ranges. For example, the memory subsystem, such as a double-data rate 5 (DDR5) random access memory (RAM), of the computing system may generate RF noise that couples as RFI in the Wi-Fi 6E frequency band. Often, an external antenna may be used to integrate an existing computing system to support Wi-Fi 6E transmissions, but even in an external implementation, RF noise generated by the computing system may leak through the chassis (e.g., through vent holes/panel openings) and interfere with an externally-connected antenna. Shielding is often used to reduce leakage, but chassis-level shielding may negatively impact thermals of the system and the overall bill-of-materials (BOM) costs.
Brief Description of the Drawings
[0004] In the drawings, like reference characters generally refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the exemplary principles of the disclosure. In the following description, various exemplary aspects of the disclosure are described with reference to the following drawings, in which:
FIG. 1 shows an exploded view of an exemplary encapsulated antenna as disclosed herein;
FIG. 2 shows an exploded view from a different perspective of an exemplary encapsulated antenna;
FIG. 3 depicts an exemplary flow for assembling an encapsulated antenna as described herein;
FIG. 4 shows an exploded view of an exemplary encapsulated antenna with perforations in the housing, metal layer, top cover, and spacer;
FIG. 5 shows a graph of signal levels from about 5 GHz to about 7.2 GHz for a conventional antenna, an encapsulated antenna as disclosed herein, and a noise floor; and
FIG. 6 shows an example of a computing system that includes a chassis, internal to which a wireless transceiver is located and external to which an encapsulated antenna is attached.
Description
[0005] The following detailed description refers to the accompanying drawings that show, by way of illustration, exemplary details and features.
[0006] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects or designs.
, C , C , C , Claims:1. An apparatus comprising:
a housing formed from an insulating material;
a metal layer arranged within a cavity of the housing;
an antenna comprising a ground terminal and an antenna body, wherein the ground terminal is connected to the metal layer, wherein the antenna body is arranged above the metal layer and within the cavity; and
a spacer between the metal layer and the antenna body that provides an offset distance between the metal layer and the antenna body.