# US 12,224,488 B2 · Wireless communication apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,488 B2 - Document ID: US12224488B2 - Status: Granted - Kind: B2 - Application number: 17/731,609 - Filed: 2022-04-28 - Published: 2022-08-18 - Granted: 2025-02-11 - Earliest claimed: 2019-10-29 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Makoto Aoki; Satoru Omura; Yutaka Ishinari - Web page: https://patentgrep.com/patent/US12224488B2 ## CPC - H01Q 1/245: {with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure} - H01Q 1/52: Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) - H01Q 1/1207: {for fastening a rigid aerial element} - H01Q 1/24: with receiving set - H01Q 9/26: with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00) - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract In a wireless communication apparatus according to the present invention, an antenna including an antenna element is disposed at a position closer to an opening of an outer housing than to a fixing member formed of an electric conductor and configured to fix the antenna, and an electric supply unit configured to supply the antenna with electric power and a first region that is positioned on an electric supply unit side of the antenna element are disposed closer to the fixing member than a second region including an open end portion of the antenna element. ## Claims ### Claim 1 A wireless communication apparatus comprising: an antenna including an antenna element having a connection portion and an open end portion, wherein the antenna element has a path length between the connection portion and the open end portion; a conductor member formed of an electric conductor; an electric supply unit electrically connected to the connection portion of the antenna element and configured to supply electric power to the antenna; and an outer housing formed of an electric conductor and configured to enclose the antenna, the conductor member, and the electric supply unit, the outer housing having an opening for allowing electromagnetic waves from the antenna to radiate outward from the outer housing, wherein the antenna is disposed at a position closer to the opening of the outer housing than to the conductor member, and the connection portion and a midpoint corresponding to a half length of the path length of the antenna element are located closer to the conductor member than a surface of the open end portion, and the surface of the open end portion is a surface facing the conductor member side. ### Claim 2 (depends on 1) The wireless communication apparatus according to claim 1, wherein at least part of the antenna is configured to overlap the opening when viewed from a direction perpendicular to an opening face of the opening. ### Claim 3 (depends on 1) The wireless communication apparatus according to claim 1, wherein a second region of the antenna element including the open end portion is disposed at a position closer to the opening of the outer housing than a first region of the antenna element including the connection portion. ### Claim 4 (depends on 3) The wireless communication apparatus according to claim 3, wherein the first region of the antenna element is included in a region between the connection portion and the midpoint. ### Claim 5 (depends on 4) The wireless communication apparatus according to claim 4, wherein a longest distance between the conductor member and the antenna element is a first distance, a shortest distance between the conductor member and the antenna element is a second distance, a difference between the first distance and the second distance is a third distance, a sum of a distance of ½ of the third distance and the second distance is a fourth distance, a longest distance between the conductor member and the first region is shorter than the fourth distance. ### Claim 6 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna further includes a projection between the antenna element and the conductor member, the projection being formed of an electric conductor and having a projecting shape. ### Claim 7 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna is a dipole antenna including a first antenna element and a second antenna element as the antenna element, the first antenna element and the second antenna element each have one end portion that forms the open end portion, and the electric supply unit is provided between another end portion of the first antenna element and another end portion of the second antenna element. ### Claim 8 (depends on 7) The wireless communication apparatus according to claim 7, further comprising a supporting member configured to support the antenna and fixed to the conductor member, wherein the supporting member is configured to support the first antenna element and the second antenna element in a linear pattern from the one end portion to the other end portion of each of the first antenna element and the second antenna element. ### Claim 9 (depends on 7) The wireless communication apparatus according to claim 7, further comprising a supporting member configured to support the antenna and fixed to the conductor member, wherein the supporting member is configured to support the first antenna element and the second antenna element from the one end portion to the other end portion of each of the first antenna element and the second antenna element in at least one of a folded pattern and a curved pattern. ### Claim 10 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna is an inverted-F antenna further including a ground conductor portion to be used as a ground of the antenna element, and the antenna element includes one end portion forming the open end portion, another end portion short-circuited to the ground conductor portion, and a portion between the one end portion and the other end portion, the portion configured to serve as a power supply line electrically connected to the electric supply unit. ### Claim 11 (depends on 10) The wireless communication apparatus according to claim 10, further comprising a supporting member configured to support the antenna and fixed to the conductor member, wherein the supporting member is configured to support the antenna element and the ground conductor portion in a planar pattern. ### Claim 12 (depends on 10) The wireless communication apparatus according to claim 10, further comprising a supporting member configured to support the antenna and fixed to the conductor member, wherein the supporting member is configured to support the antenna element and the ground conductor portion in at least one of a folded pattern and a curved pattern. ### Claim 13 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna is an inverted-F antenna further including an electric conductor portion formed of an electric conductor, and the antenna element includes one end portion forming the open end portion, another end portion short-circuited to the electric conductor portion, and a portion between the one end portion and the other end portion, the portion configured to serve as a power supply line electrically connected to the electric supply unit. ### Claim 14 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna is a monopole antenna further including a ground conductor portion to be used as a ground of the antenna element, and one end portion of the antenna element forms the open end portion, and the electric supply unit is provided between another end portion of the antenna element and the ground conductor portion. ### Claim 15 (depends on 1) The wireless communication apparatus according to claim 1, wherein the antenna is a monopole antenna further including an electric conductor portion formed of an electric conductor, and one end portion of the antenna element forms the open end portion, and the electric supply unit is provided between another end portion of the antenna element and the electric conductor portion. ### Claim 16 (depends on 1) The wireless communication apparatus according to claim 1, wherein the wireless communication apparatus is a digital radiography further including a sensor configured to detect radioactive rays.