# US 2014/0192508 A1 · Mobile wireless communications device with rf shield and related methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0192508 A1 - Document ID: US20140192508A1 - Status: Published application - Kind: A1 - Application number: 14/205,484 - Filed: 2014-03-12 - Published: 2014-07-10 - Earliest claimed: 2010-05-25 - Assignees: BlackBerry Limited - Applicants: Blackberry Limited - Inventors: PRABHU V. PATIL; ROBERTO GAUTIER; PAUL BRIAN KOCH; ADRIAN PISEU DAVIS; NIRAJKUMAR RAJENDRAKU PATEL - Web page: https://patentgrep.com/patent/US20140192508A1 ## CPC - H04B 1/525: with means for reducing leakage of transmitter signal into the receiver - H04B 15/02: Reducing interference from electric apparatus by means located at or near the interfering apparatus - H05K 9/0026: {integrally formed from metal sheet} - H04B: TRANSMISSION - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A mobile wireless communications device may include a housing, an antenna carried by the housing, and a circuit board carried by the housing. The mobile wireless communications device may also include a power amplifier carried by the circuit board, an antenna switch carried by the circuit board and configured to selectively couple the power amplifier to the antenna, a first radio frequency (RF) shield covering the power amplifier and the antenna switch, and a second RF shield within the first RF shield and covering the antenna switch. ## Claims ### Claim at position 1 1-49. (canceled) ### Claim 50 A mobile wireless communications device comprising: a housing; an antenna carried by said housing; a circuit board carried by said housing; a first radio frequency (RF) shield covering at least a portion of said circuit board; and a second RF shield within said first RF shield and comprising a top, and a corner extension extending outwardly from said top. ### Claim 51 (depends on 50) The mobile wireless communications device according to claim 50 wherein said corner extension has at least one of a rectangular, triangular and curved shape. ### Claim 52 (depends on 50) The mobile wireless communications device according to claim 50 further comprising a power amplifier carried by said circuit board and covered by at least said first RF shield. ### Claim 53 (depends on 52) The mobile wireless communications device according to claim 52 wherein said power amplifier is also covered by said second RF shield. ### Claim 54 (depends on 50) The mobile wireless communications device according to claim 50 further comprising an antenna switch carried by said circuit board and covered by at least said first RF shield. ### Claim 55 (depends on 54) The mobile wireless communications device according to claim 54 wherein said antenna switch is also covered by said second RF shield. ### Claim 56 (depends on 50) The mobile wireless communications device according to claim 50 further comprising a filter carried by said circuit board and covered by at least said first RF shield. ### Claim 57 (depends on 56) The mobile wireless communications device according to claim 56 wherein said filter is also covered by said second RF shield. ### Claim 58 (depends on 50) The mobile wireless communications device according to claim 50 wherein said second RF shield comprises a plurality of legs extending from said top toward said circuit board. ### Claim 59 (depends on 50) The mobile wireless communications device according to claim 50 wherein said second RF shield comprises a plurality of sidewall skirts at least partially extending from said top toward said circuit board. ### Claim 60 (depends on 50) The mobile wireless communications device according to claim 50 wherein said top has a plurality of passageways therethrough. ### Claim 61 (depends on 50) The mobile wireless communications device according to claim 50 wherein said top has a rectangular shape. ### Claim 62 (depends on 50) The mobile wireless communications device according to claim 50 wherein said first and second RF shields each comprises metal. ### Claim 63 A mobile wireless communications device comprising: a housing; an antenna carried by said housing; a circuit board carried by said housing; a first radio frequency (RF) shield covering at least a portion of said circuit board; and a second RF shield within said first RF shield and comprising a top having a plurality of passageway therethrough, and a corner extension extending outwardly from said top; said first and second RF shields each comprising metal. ### Claim 64 (depends on 63) The mobile wireless communications device according to claim 63 wherein said corner extension has at least one of a rectangular, triangular and curved shape. ### Claim 65 (depends on 63) The mobile wireless communications device according to claim 63 further comprising a power amplifier carried by said circuit board and covered by at least said first RF shield. ### Claim 66 (depends on 65) The mobile wireless communications device according to claim 65 wherein said power amplifier is also covered by said second RF shield. ### Claim 67 (depends on 63) The mobile wireless communications device according to claim 63 further comprising an antenna switch carried by said circuit board and covered by at least said first RF shield. ### Claim 68 (depends on 67) The mobile wireless communications device according to claim 67 wherein said antenna switch is also covered by said second RF shield. ### Claim 69 (depends on 63) The mobile wireless communications device according to claim 63 further comprising a filter carried by said circuit board and covered by at least said first RF shield. ### Claim 70 (depends on 69) The mobile wireless communications device according to claim 69 wherein said filter is also covered by said second RF shield. ### Claim 71 (depends on 63) The mobile wireless communications device according to claim 63 wherein said second RF shield comprises a plurality of legs extending from said top toward said circuit board. ### Claim 72 (depends on 63) The mobile wireless communications device according to claim 63 wherein said second RF shield comprises a plurality of sidewall skirts at least partially extending from said top toward said circuit board. ### Claim 73 A method of making a mobile wireless communications device comprising: providing a housing carrying an antenna and a circuit board; positioning a first radio frequency (RF) shield to cover at least a portion of the circuit board; and positioning a second RF shield within the first RF shield and comprising a top, and a corner extension extending outwardly from the top. ### Claim 74 (depends on 73) The method according to claim 73 wherein the corner extension has at least one of a rectangular, triangular and curved shape. ### Claim 75 (depends on 73) The method according to claim 73 further comprising positioning a power amplifier on the circuit board and covered by at least the first RF shield. ### Claim 76 (depends on 75) The method according to claim 75 wherein the power amplifier is also covered by the second RF shield. ### Claim 77 (depends on 73) The method according to claim 73 further comprising positioning an antenna switch on the circuit board and covered by at least the first RF shield. ### Claim 78 (depends on 77) The method according to claim 77 wherein the antenna switch is also covered by the second RF shield. ### Claim 79 (depends on 73) The method according to claim 73 further comprising poisoning a filter on the circuit board and covered by at least the first RF shield. ### Claim 80 (depends on 79) The method according to claim 79 wherein the filter is also covered by the second RF shield. ### Claim 81 (depends on 73) The method according to claim 73 wherein the second RF shield comprises a plurality of legs extending from the top toward the circuit board. ### Claim 82 (depends on 73) The method according to claim 73 wherein the second RF shield comprises a plurality of sidewall skirts at least partially extending from the top toward the circuit board. ### Claim 83 (depends on 73) The method according to claim 73 wherein the top has a plurality of passageways therethrough.