# US 2013/0154898 A1 · Antenna configuration method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154898 A1 - Document ID: US20130154898A1 - Status: Published application - Kind: A1 - Application number: 13/768,479 - Filed: 2013-02-15 - Published: 2013-06-20 - Earliest claimed: 2010-07-21 - Assignees: Magellan Technology Pty Limited - Inventors: Stuart Colin LITTLECHILD - Web page: https://patentgrep.com/patent/US20130154898A1 ## CPC - H01Q 1/525: {between emitting and receiving antennas} - G06K 19/0723: {the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs} - G06K 19/07749: {the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card} - G06K 19/07773: {Antenna details (antennas for wireless devices, e.g. RFID tags, in general H01Q1/22)} - H01Q 1/2225: {used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal} - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 1/521: {reducing the coupling between adjacent antennas} - 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 21/00: Antenna arrays or systems (arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00) - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract The present invention relates to the field of data transmission. In one form, the invention relates to the transmission and/or reception of data modulated signals between various devices, including loads and/or antennas. In another form, the invention relates to the field of transponders (tags), such as Radio Frequency Identification Devices (RFID), interrogator devices/systems and the transmission of data between a tag and an interrogator. The present invention utilises antenna design to alleviate tag coupling. ## Claims ### Claim at position 1 1-17. (canceled) ### Claim 18 An antenna comprising: a first portion having a first configuration and arranged substantially in a first plane of a plurality of planes; a second portion exclusive to and connected to the first portion, having a second configuration, and arranged substantially in the first plane; wherein the first portion and the second portion are divisible by a second plane of the plurality of planes, the second plane being perpendicular to the first plane; and wherein the first configuration and the second configuration are not minor images of one another when reflected about an axis formed by intersection of the first plane and any possible orientation of the second plane. ### Claim 19 A tag comprising: an antenna having a first configuration in a first plane; wherein, when the antenna is placed in a face-to-face orientation with another tag having an antenna of a second configuration in a second plane, the first configuration is not a minor image of the second configuration; and wherein the first plane and the second plane are substantially parallel to one another. ### Claim 20 (depends on 19) The tag as claimed in claim 19, wherein the first configuration is not a minor image of the second configuration in a plurality of antenna orientations. ### Claim 21 (depends on 20) The tag as claimed in claim 20, wherein the first configuration is not a minor image of the second configuration in all possible antenna orientations. ### Claim 22 (depends on 19) The tag as claimed in claim 19, wherein the first configuration and the second configuration are the same. ### Claim 23 (depends on 19) The tag as claimed in claim 19, wherein the tag is an RFID tag. ### Claim 24 A communication system comprising: a first device comprising a first antenna; a second device comprising a second antenna; wherein each of the first antenna and the second antenna comprises: a first portion having a first configuration in a plane; and a second portion having a second configuration in the plane; wherein the first configuration is different from the second configuration such that, when the first antenna and the second antenna are placed in a face-to-face configuration, the first antenna and the second antenna are not mirror images of one another. ### Claim 25 An antenna-configuration method comprising: configuring a first antenna to have a relatively non-symmetrical shape in a first plane; configuring a second antenna to have the same shape as the first antenna in a second plane; wherein, when the first antenna and the second antenna are placed in a face-to-face configuration and the first plane and the second plane are parallel to one another, mutual coupling between the first antenna and the second antenna is reduced relative to a first antenna and a second antenna having a same relatively symmetrical shape. ### Claim 26 (depends on 25) The method as claimed in claim 25, wherein the configuration of the first antenna and the second antenna reduces interference between the first antenna and the second antenna. ### Claim 27 (depends on 25) The method as claimed in claim 25, wherein, when the first antenna and the second antenna are placed in any face-to-face orientation, the first configuration is not a minor image of the second configuration.