# US 2014/0152516 A1 · Antenna for wireless power transmission and near field communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152516 A1 - Document ID: US20140152516A1 - Status: Published application - Kind: A1 - Application number: 14/096,915 - Filed: 2013-12-04 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Korea Advanced Institute of Science and Technology; Samsung Electronics Co., Ltd. - Applicants: Korea Advanced Institute of Science and Technology; Samsung Electronics Co., Ltd. - Inventors: Dong Zo Kim; Sang Wook Kwon; Ki Young Kim; Nam Yun Kim; Yun Kwon Park; Jae Hyun Park; Keum Su Song; Chi Hyung Ahn; Young Ho Ryu; Jong Won Yu; Chang Wook Yoon; Wang Sang Lee - Web page: https://patentgrep.com/patent/US20140152516A1 ## CPC - H04B 5/79: for data transfer in combination with power transfer - H01Q 1/521: {reducing the coupling between adjacent antennas} - H01Q 5/40: Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements - H01Q 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - H04B 5/26: using coils - H04B 5/263: {Multiple coils at either side} - H04B: TRANSMISSION - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A dual antenna for wireless communication transmission (WPT) and near field communication (NFC) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna. ## Claims ### Claim 1 A dual antenna comprising: a loop antenna; and a dual loop antenna disposed at an inside and an outside of the loop antenna. ### Claim 2 (depends on 1) The dual antenna of claim 1, wherein the dual loop antenna comprises: an inner portion disposed at the inside of the loop antenna; a first outer portion disposed at the outside of the loop antenna; a second outer portion disposed at the outside of the loop antenna; a first connecting portion connecting a first end of the inner portion to an end of the first outer portion; and a second connecting portion connecting a second end of the inner portion to an end of the second outer portion. ### Claim 3 (depends on 2) The dual antenna of claim 2, wherein the first connecting portion overlaps the loop antenna disposed on a plane; and the second connecting portion overlaps the loop antenna. ### Claim 4 (depends on 1) The dual antenna of claim 1, wherein the loop antenna is configured to perform wireless power transmission; and the dual loop antenna is configured to perform near field communication. ### Claim 5 (depends on 1) The dual antenna of claim 1, wherein the loop antenna is configured to generate a first field; and the dual loop antenna is configured to generate a second field offsetting the first field. ### Claim 6 (depends on 1) The dual antenna of claim 1, wherein the loop antenna and the dual loop antenna are configured so that an induced current generated in the dual loop antenna by a field generated by the loop antenna is less than or equal to a predetermined value. ### Claim 7 A dual antenna comprising: a first antenna comprising a circle or polygon shape that is partially cut; and a second antenna disposed at an inside and an outside of the first antenna. ### Claim 8 (depends on 7) The dual antenna of claim 7, wherein the second antenna comprises: an inner portion disposed at the inside of the first antenna; a first outer portion disposed at the outside of the first antenna; a second outer portion disposed at the outside of the first antenna; a first connecting portion connecting a first end of the inner portion to an end of the first outer portion; and a second connecting portion connecting a second end of the inner portion to an end of the second outer portion. ### Claim 9 (depends on 8) The dual antenna of claim 8, wherein the first connecting portion overlaps the first antenna disposed on a plane; and the second connecting portion overlaps the first antenna. ### Claim 10 (depends on 9) The dual antenna of claim 9, wherein the first connecting portion and the first antenna are insulated from each other; and the second connecting portion and the first antenna are insulated from each other. ### Claim 11 (depends on 7) The dual antenna of claim 7, wherein the first antenna and the second antenna are disposed on a plane. ### Claim 12 (depends on 7) The dual antenna of claim 7, wherein the second antenna comprises a dual loop antenna. ### Claim 13 (depends on 7) The dual antenna of claim 7, wherein the first antenna is configured to perform wireless power transmission using a first frequency; and the second antenna is configured to perform near field communication using a second frequency. ### Claim 14 (depends on 7) The dual antenna of claim 7, wherein the first antenna has a high Q value; and the second antenna has a low Q value. ### Claim 15 (depends on 7) The dual antenna of claim 7, wherein: the first antenna is configured to generate a first field; and the second antenna is configured to generate a second field offsetting the first field. ### Claim 16 (depends on 7) The dual antenna of claim 7, wherein the first antenna and the second antenna are configured so that an induced current generated in the second antenna by a field generated by the first antenna is less than or equal to a predetermined value. ### Claim 17 A dual antenna comprising: a first antenna configured to generate a first field; and a second antenna configured to generate a second field offsetting the first field. ### Claim 18 (depends on 17) The dual antenna of claim 17, wherein the first antenna is configured to perform wireless power transmission; and the second antenna is configured to perform near field communication.