# US 8,542,155 B2 · Wireless communications device and housing for a wireless communications device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,155 B2 - Document ID: US8542155B2 - Status: Granted - Kind: B2 - Application number: 13/194,295 - Filed: 2011-07-29 - Published: 2013-01-31 - Granted: 2013-09-24 - Earliest claimed: 2011-07-29 - Assignees: Brady Worldwide, Inc. - Applicants: Shih Yang Chua; Sivalingam Sundaram - Inventors: Shih Yang Chua; Sivalingam Sundaram - Web page: https://patentgrep.com/patent/US8542155B2 ## CPC - H05K 5/0278: {of USB type (details relating to connectors H01R27/00)} - H01Q 1/2275: {associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB} - H01Q 1/2283: {mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package} - H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)} - H01Q 1/42: Housings not intimately mechanically associated with radiating elements, e.g. radome - H01Q 1/52: Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A housing for a wireless communications device includes a metal cover. An aperture is formed in the metal cover adjacent an antenna to limit interference with transmissions through the antenna, while providing structural strength to the housing. The opposing side of the housing is made from a material that allows transmission from the antenna with limited interference, thereby providing omni-directional transmissions. ## Claims ### Claim 1 A housing for a wireless communications device, the housing comprising: a plastic base member; a metal cover coupled to the base member; an aperture provided in the metal cover, and located in the metal cover in a position selected to locate the aperture an antenna to be received in the housing; and a label positioned over the aperture, the label comprising a material selected to limit interference with transmissions of the antenna. ### Claim 2 (depends on 1) The housing of claim 1, wherein the label comprises plastic. ### Claim 3 (depends on 1) The housing of claim 1, wherein the aperture is about 1/12 of the wavelength of the antenna in width and ¼ of the wavelength of the antenna in length. ### Claim 4 (depends on 1) The housing of claim 1, wherein the label comprises a polycarbonate material. ### Claim 5 (depends on 1) The housing of claim 1, wherein the metal cover has a thickness of about 0.19 mm. ### Claim 6 (depends on 1) The housing of claim 1, wherein the metal cover is constructed from stainless steel. ### Claim 7 (depends on 1) The housing of claim 1, wherein the label comprises a material selected to meet the UL 94 VTM-2 fire standard. ### Claim 8 (depends on 1) The housing of claim 1, wherein the label has a thickness dimension of about 0.25 mm. ### Claim 9 (depends on 1) The housing of claim 1, wherein the aperture is sized and dimensioned to have a length dimension about three times the width dimension. ### Claim 10 A wireless communications device, comprising: a communications circuit including an antenna for transmitting wireless communications to external devices; a housing for receiving the communications circuit, the housing including: a metal cover; a plastic base member coupled to the metal cover; an aperture located in the metal cover adjacent the antenna; and a label positioned over the aperture, the label comprising a material selected to limit electromagnetic interference with the antenna. ### Claim 11 (depends on 10) The wireless communications device of claim 10, further comprising a receptacle for connecting the wireless communications device to a universal serial bus. ### Claim 12 (depends on 10) The wireless communications device of claim 10, wherein the communication circuit is powered from the universal serial bus on a host device. ### Claim 13 (depends on 10) The wireless communications device of claim 10, wherein the antenna comprises a microchip antenna. ### Claim 14 (depends on 10) The wireless communications device of claim 10, wherein the antenna is selected to operate in the ISM band. ### Claim 15 (depends on 10) The wireless communications device of claim 10, wherein the communications circuit includes circuitry for communicating with at least one of a WLAN and a Bluetooth protocol. ### Claim 16 (depends on 10) The wireless communications device of claim 10, wherein the metal cover comprises a steel material. ### Claim 17 (depends on 10) The wireless communications device of claim 10, wherein the metal cover comprises a material having a thickness of about 0.19 mm. ### Claim 18 (depends on 10) The wireless communications device of claim 10, wherein the label comprises a polycarbonate material. ### Claim 19 (depends on 10) The wireless communications device of claim 10, wherein the label has a thickness of substantially 0.25 mm. ### Claim 20 (depends on 10) The wireless communications device of claim 10, wherein the aperture is substantially rectangular in shape, and the length is dimensioned to be substantially three times the width.