# US 12,183,995 B2 · Antenna structure and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,995 B2 - Document ID: US12183995B2 - Status: Granted - Kind: B2 - Application number: 17/959,303 - Filed: 2022-10-04 - Published: 2023-04-20 - Granted: 2024-12-31 - Earliest claimed: 2021-10-19 - Assignees: Compal Electronics, Inc. - Applicants: Ta-Hong Cheng; Yen-Hao Yu; Shih-Chia Liu; Po-Hsuan Chen; Jui-Hung Lai - Inventors: Ta-Hong Cheng; Yen-Hao Yu; Shih-Chia Liu; Po-Hsuan Chen; Jui-Hung Lai - Web page: https://patentgrep.com/patent/US12183995B2 ## CPC - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 1/24: with receiving set - H01Q 1/48: Earthing means; Earth screens; Counterpoises - H01Q 5/371: Branching current paths - 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 17/00: Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna structure and an electronic apparatus are provided. The antenna structure includes a substrate, a first radiation part, and a second radiation part. The substrate has a first surface and a second surface opposite to each other. The first radiation part is disposed on the first surface. The first radiation part is an absorber material. The second radiation part is disposed on the second surface. The second radiation part is coupled to a feeding part. There is a distance between the second radiation part and the first radiation part, so as to excite a first resonance mode through the coupling of the second radiation part to the first radiation part. Accordingly, the specific absorption rate (SAR) value of the electromagnetic wave is reduced. ## Claims ### Claim 1 An antenna structure, comprising: a substrate, having a first surface and a second surface opposite to each other; a first radiation part, disposed on the first surface, wherein the first radiation part is an absorber material; and a second radiation part, disposed on the second surface and coupled to a feeding part, wherein an orthographic projection of the first radiation part on the substrate partially overlaps an orthographic projection of the second radiation part on the substrate, there is a distance between the second radiation part and the first radiation part, so as to excite a first resonance mode through coupling of the second radiation part to the first radiation part. ### Claim 2 (depends on 1) The antenna structure according to claim 1, further exciting a second resonance mode through the coupling of the second radiation part to the first radiation part. ### Claim 3 (depends on 2) The antenna structure according to claim 2, wherein the first radiation part comprises: a first branch for exciting the first resonance mode; and a second branch for exciting the second resonance mode. ### Claim 4 (depends on 3) The antenna structure according to claim 3, wherein a length of the first branch is about ¼ wavelength of the first resonance mode. ### Claim 5 (depends on 3) The antenna structure according to claim 3, wherein a length of the second branch is about ¼ wavelength of the second resonance mode. ### Claim 6 (depends on 3) The antenna structure according to claim 3, wherein the first radiation part further comprises: a first short-circuit part, coupled to one of the first branch and the second branch, and a grounding part. ### Claim 7 (depends on 6) The antenna structure according to claim 6, wherein a size of the first branch, the second branch, and the first short-circuit part is related to an impedance matching. ### Claim 8 (depends on 2) The antenna structure according to claim 2, wherein the second radiation part comprises: a first section, coupled to the feeding part, with a length of less than ¼ wavelength of the first resonance mode. ### Claim 9 (depends on 6) The antenna structure according to claim 6, wherein a width of the first section is related to an impedance matching of the first resonance mode. ### Claim 10 (depends on 1) The antenna structure according to claim 1, further exciting a second resonance mode through the second radiation part. ### Claim 11 (depends on 10) The antenna structure according to claim 10, wherein the second radiation part comprises a third branch for exciting the second resonance mode. ### Claim 12 (depends on 11) The antenna structure according to claim 11, wherein a length of the third branch is about ¼ wavelength of the second resonance mode. ### Claim 13 (depends on 11) The antenna structure according to claim 11, wherein the second radiation part further comprises: a second short-circuit part, coupled to a grounding part. ### Claim 14 (depends on 13) The antenna structure according to claim 13, wherein a size of the second short-circuit part is related to an impedance matching of the first resonance mode and the second resonance mode. ### Claim 15 (depends on 10) The antenna structure according to claim 10, wherein the first radiation part comprises: a second section, with a length of approximately ¼ wavelength of the first resonance mode. ### Claim 16 (depends on 15) The antenna structure according to claim 15, wherein a width of the second section is related to an impedance matching of the first resonance mode. ### Claim 17 (depends on 1) The antenna structure according to claim 1, wherein the second radiation part is a metal material. ### Claim 18 (depends on 1) The antenna structure according to claim 1, wherein the distance is less than 0.4 mm. ### Claim 19 (depends on 1) An electronic apparatus, comprising the antenna structure according to claim 1.