# US 2021/0280976 A1 · Combo antenna module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280976 A1 - Document ID: US20210280976A1 - Status: Published application - Kind: A1 - Application number: 17/258,141 - Filed: 2019-07-05 - Published: 2021-09-09 - Earliest claimed: 2018-07-06 - Assignees: Amotech Co., Ltd. - Applicants: Amotech Co., Ltd. - Inventors: Hyung Il BAEK; Joo Seung MAENG; Ki Sang LIM; Seong Hyun KIM; Eui Jin JEONG; Du Hyun SONG; Kil Jae JANG; Ki-Chul KIM; Jin Won NOH - Web page: https://patentgrep.com/patent/US20210280976A1 ## CPC - H01Q 7/06: with core of ferromagnetic material (H01Q7/02 takes precedence) - H04B 5/26: using coils - H01F 27/2823: {Wires (H01F27/2866 takes precedence)} - H01F 27/366: {made of ferromagnetic material} - H01F 38/14: Inductive couplings - H02J 50/10: using inductive coupling - H04B 5/43: Antennas - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract Proposed is a combo antenna module which laminates a loop coil and an antenna sheet to configure a combo antenna, thereby preventing the degree of design freedom from being lowered and minimizing the manufacturing cost. The proposed combo antenna module includes a magnetic sheet, a loop coil disposed on the upper surface of the magnetic sheet, and an antenna sheet having the area smaller than that of the magnetic sheet, and disposed on the upper surface of the magnetic sheet, in which the antenna sheet overlaps a part of the loop coil. ## Claims ### Claim 1 A combo antenna module comprising: a magnetic sheet; a loop coil disposed on an upper surface of the magnetic sheet; and an antenna sheet having an area smaller than an area of the magnetic sheet, and disposed on the upper surface of the magnetic sheet, wherein the antenna sheet overlaps a part of the loop coil. ### Claim 2 (depends on 1) The combo antenna module of claim 1, wherein the loop coil is formed of a metal wire formed in a loop shape in which a virtual winding axe perpendicular to the magnetic sheet is wound by the loop coil in plural times. ### Claim 3 (depends on 1) The combo antenna module of claim 1, wherein the antenna sheet comprises: a flexible base sheet having an area smaller than the area of the magnetic sheet, and wherein the base sheet overlaps a region in which a first end and a second end of the loop coil are disposed. ### Claim 4 (depends on 3) The combo antenna module of claim 3, wherein the antenna sheet further comprises: an antenna pattern formed in a loop shape and disposed on an upper surface of the base sheet, and wherein the antenna pattern overlaps a part of the loop coil. ### Claim 5 (depends on 4) The combo antenna module of claim 4, wherein the antenna sheet further comprises: a first connection pattern disposed on the upper surface of the base sheet, and electrically connected to the first end of the loop coil; and a second connection pattern spaced apart from the first connection pattern and disposed on the upper surface of the base sheet, and electrically connected to the second end of the loop coil. ### Claim 6 (depends on 5) The combo antenna module of claim 5, wherein the first connection pattern and the second connection pattern are disposed in an inner region of the loop formed by the antenna pattern. ### Claim 7 (depends on 5) The combo antenna module of claim 5, wherein the first end and the second end of the loop coil overlap an inner region of the loop formed by the antenna pattern on a lower surface of the base sheet. ### Claim 8 (depends on 5) The combo antenna module of claim 5, wherein a first end of the first connection pattern is exposed to a lower surface of the base sheet through a region in which a part of the base sheet is removed, and electrically connected to the first end of the loop coil in the region exposed to the lower surface of the base sheet. ### Claim 9 (depends on 5) The combo antenna module of claim 5, wherein the first end of the second connection pattern is exposed to a lower surface of the base sheet through a region in which a part of the base sheet is removed, and electrically connected to the second end of the loop coil in the region exposed to the lower surface of the base sheet. ### Claim 10 (depends on 3) The combo antenna module of claim 3, wherein the antenna sheet further comprises: a terminal sheet extending from one side of the base sheet, and formed with a plurality of terminal patterns. ### Claim 11 (depends on 1) The combo antenna module of claim 1, wherein the magnetic sheet is formed with a step compensation groove in a region of overlapping the loop coil and the antenna sheet. ### Claim 12 (depends on 11) The combo antenna module of claim 11, wherein the magnetic sheet is a laminate formed by laminating one or more sheets in which a hole is formed in the region of overlapping the loop coil and the antenna sheet. ### Claim 13 (depends on 1) The combo antenna module of claim 1, further comprising: a step compensation sheet having an area smaller than the area of the magnetic sheet, and disposed on the upper surface of the magnetic sheet, wherein the step compensation sheet is disposed to cover a region not overlapping the antenna sheet on the magnetic sheet. ### Claim 14 (depends on 1) The combo antenna module of claim 1, wherein the antenna sheet comprises: a flexible base sheet having an area smaller than the area of the magnetic sheet; and an extension sheet formed to extend from one side of the base sheet toward a center portion of the loop coil, and wherein the extension sheet overlaps a region in which the first end and the second end of the loop coil are disposed. ### Claim 15 (depends on 14) The combo antenna module of claim 14, wherein the antenna sheet further comprises: a first connection pattern disposed over the upper surface of the base sheet and an upper surface of the extension sheet, and electrically connected to the first end of the loop coil; and a second connection pattern spaced apart from the first connection pattern and disposed over the upper surface of the base sheet and the upper surface of the extension sheet, and electrically connected to the second end of the loop coil. ### Claim 16 (depends on 15) The combo antenna module of claim 15, wherein the first end of the first connection pattern is exposed to the lower surface of the extension sheet through the region in which a part of the extension sheet is removed and electrically connected to the first end of the loop coil. ### Claim 17 (depends on 15) The combo antenna module of claim 15, wherein the first end of the second connection pattern is exposed to the lower surface of the extension sheet through the region in which a part of the extension sheet is removed and electrically connected to the second end of the loop coil. ### Claim 18 (depends on 15) The combo antenna module of claim 15, wherein the antenna sheet further comprises: an antenna pattern formed on the upper surface of the base sheet, and wherein a part of the antenna pattern in a penetration region is removed, the first connection pattern and the second connection pattern intersecting with the antenna pattern in the penetration region. ### Claim 19 (depends on 18) The combo antenna module of claim 18, wherein the antenna sheet further comprises: a bypass pattern formed on the lower surface of the base sheet, and wherein the bypass pattern is connected to the antenna pattern ### Claim 20 (depends on 19) The combo antenna module of claim 19, wherein one end of the bypass pattern is electrically connected to a first cut-out part of the antenna pattern disposed on the left side of the penetration region, and wherein other end of the bypass pattern is electrically connected to a second cut-out part of the antenna pattern disposed on the right side of the penetration region.