# US 2021/0280973 A1 · Antenna structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280973 A1 - Document ID: US20210280973A1 - Status: Published application - Kind: A1 - Application number: 16/995,784 - Filed: 2020-08-17 - Published: 2021-09-09 - Earliest claimed: 2020-03-03 - Assignees: Compal Electronics, Inc. - Inventors: Chun-Cheng Chan; Shih-Chia Liu; Yen-Hao Yu; Li-Chun Lee; Chao-Lin Wu; Jui-Hung Lai; Chih-Heng Lin - Web page: https://patentgrep.com/patent/US20210280973A1 ## CPC - H01Q 5/371: Branching current paths - H01Q 1/521: {reducing the coupling between adjacent antennas} - 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 The disclosure provides an antenna structure, including at least one supporting module, a first antenna, and a second antenna. The first antenna is disposed on the at least one supporting module and includes a first feeding point and a first zero-current zone. The first antenna is connected to a ground plane. The second antenna is disposed on the at least one supporting module and includes a second feeding point and a second zero-current zone. The second antenna is connected to the ground plane. The first feeding point of the first antenna is disposed in the second zero-current zone of the second antenna, and the second feeding point of the second antenna is disposed in the first zero-current zone of the first antenna. ## Claims ### Claim 1 An antenna structure comprising: at least one supporting module; a first antenna disposed on the at least one supporting module and comprising a first feeding point and a first zero-current zone, wherein the first antenna is connected to a ground plane; and a second antenna disposed on the at least one supporting module and comprising a second feeding point and a second zero-current zone, wherein the second antenna is connected to the ground plane, wherein the first feeding point of the first antenna is disposed in the second zero-current zone of the second antenna, and the second feeding point of the second antenna is disposed in the first zero-current zone of the first antenna. ### Claim 2 (depends on 1) The antenna structure according to claim 1, wherein in response to a first excitation signal received by the first feeding point, the first antenna is excited by the first excitation signal to form the first zero-current zone. ### Claim 3 (depends on 2) The antenna structure according to claim 2, wherein the first antenna is excited by the first excitation signal to form a first ground current on the ground plane and form a first coupling current on the second antenna, and a partial ground current of the first ground current and a partial coupling current of the first coupling current are offset by each other to form the first zero-current zone. ### Claim 4 (depends on 1) The antenna structure according to claim 1, wherein in response to a second excitation signal received by the second feeding point, the second antenna is excited by the second excitation signal to form the second zero-current zone. ### Claim 5 (depends on 4) The antenna structure according to claim 4, wherein the second antenna is excited by the second excitation signal to form a second ground current on the ground plane and form a second coupling current on the first antenna, and a partial ground current of the second ground current and a partial coupling current of the second coupling current are offset by each other to form the second zero-current zone. ### Claim 6 (depends on 1) The antenna structure according to claim 1, wherein the first zero-current zone is partially distributed on the second antenna, and the second zero-current zone is partially distributed on the first antenna. ### Claim 7 (depends on 1) The antenna structure according to claim 1, wherein the first zero-current zone is partially distributed on the ground plane. ### Claim 8 (depends on 1) The antenna structure according to claim 1, wherein the at least one supporting module comprises a single supporting structure, a first portion of the first antenna is disposed on a first surface of the supporting structure, and a first portion of the second antenna is disposed on a second surface of the supporting structure. ### Claim 9 (depends on 8) The antenna structure according to claim 8, wherein the first surface is opposite to the second surface. ### Claim 10 (depends on 9) The antenna structure according to claim 9, wherein an orthographic projection of the first portion of the first antenna on the second surface partially overlaps the first portion of the second antenna. ### Claim 11 (depends on 8) The antenna structure according to claim 8, wherein a second portion of the first antenna extends onto a third surface of the supporting module, and the third surface is adjacent to the first surface of the supporting module. ### Claim 12 (depends on 8) The antenna structure according to claim 8, wherein a second portion of the first antenna is disposed on the second surface of the supporting module, and the second surface is adjacent to the first surface of the supporting module. ### Claim 13 (depends on 12) The antenna structure according to claim 12, wherein both the first feeding point and the second feeding point are located on the second surface. ### Claim 14 (depends on 1) The antenna structure according to claim 1, wherein a structure of one of the first antenna and the second antenna is a ½-wavelength double-end short-circuit structure, and a structure of the other of the first antenna and the second antenna is a ½-wavelength double-end open-circuit structure. ### Claim 15 (depends on 1) The antenna structure according to claim 1, wherein a structure of one of the first antenna and the second antenna is a ½-wavelength double-end short-circuit structure, and a structure of the other of the first antenna and the second antenna is a ¼-wavelength resonance structure. ### Claim 16 (depends on 1) The antenna structure according to claim 1, wherein a structure of one of the first antenna and the second antenna is a ½-wavelength double-end open-circuit structure, and a structure of the other of the first antenna and the second antenna is a ¼-wavelength resonance structure. ### Claim 17 (depends on 1) The antenna structure according to claim 1, wherein structures of both the first antenna and the second antenna are ¼-wavelength resonance structures. ### Claim 18 (depends on 1) The antenna structure according to claim 1, wherein the first antenna and the second antenna are distributed on two adjacent surfaces on the supporting module. ### Claim 19 (depends on 1) The antenna structure according to claim 1, further comprising: a metal layer disposed on the supporting module, wherein the first antenna is connected to the ground plane through the metal layer. ### Claim 20 (depends on 19) The antenna structure according to claim 19, wherein the second antenna is connected to the ground plane through the metal layer. ### Claim 21 (depends on 19) The antenna structure according to claim 19, wherein the first zero-current zone is partially distributed on the metal layer. ### Claim 22 (depends on 1) The antenna structure according to claim 1, wherein the at least one supporting module comprises a first supporting structure and a second supporting structure, wherein the first antenna is disposed on the first supporting structure, and the second antenna is disposed on the second supporting structure.