# US 8,740,093 B2 · Radio IC device and radio communication terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,740,093 B2 - Document ID: US8740093B2 - Status: Granted - Kind: B2 - Application number: 14/017,406 - Filed: 2013-09-04 - Published: 2014-01-02 - Granted: 2014-06-03 - Earliest claimed: 2011-04-13 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Noboru Kato - Web page: https://patentgrep.com/patent/US8740093B2 ## CPC - 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 19/07754: {the connection being galvanic} - H01Q 1/243: {with built-in 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 9/30: with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) - H01Q 13/10: Resonant slot antennas - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A radio IC device includes a radio IC element arranged to process a high-frequency signal, a substrate on which the radio IC element is mounted, a planar conductor arranged on a first surface of the substrate, and a first wiring electrode and a second wiring electrode including respective first ends connected to a pair of input/output electrodes of the radio IC element. The first wiring electrode and the second wiring electrode are arranged on a second surface of the substrate, the second surface being parallel or substantially parallel to the first surface and including respective second ends electrically connected to the planar conductor, and defining loops when looking at the substrate from X-, Y- and Z-directions orthogonal to one another. ## Claims ### Claim 1 A radio IC device comprising: a radio IC element arranged to process a high-frequency signal; a substrate on which the radio IC element is mounted; a planar conductor arranged on a first surface of the substrate; and a first wiring electrode and a second wiring electrode including respective first ends connected to a pair of input/output electrodes of the radio IC element; wherein the first wiring electrode and the second wiring electrode are arranged on a second surface of the substrate, the second surface being parallel or substantially parallel to the first surface, and including respective second ends electrically connected to the planar conductor; and the first wiring electrode and the second wiring electrode define loops when looking at the substrate from X-, Y- and Z-directions orthogonal to one another. ### Claim 2 (depends on 1) The radio IC device according to claim 1, wherein a capacitance is provided between one end of the first wiring electrode and the planar conductor. ### Claim 3 (depends on 2) The radio IC device according to claim 2, wherein a capacitive element is connected between the first wiring electrode and the second wiring electrode. ### Claim 4 (depends on 2) The radio IC device according to claim 2, wherein the radio IC element includes a radio IC chip arranged to process a high-frequency signal, and a feeder circuit board including a feeder circuit having a predetermined resonance frequency; and the feeder circuit board includes two inductance elements. ### Claim 5 (depends on 1) The radio IC device according to claim 1, wherein a portion of the planar electrode opposite to the first wiring electrode is a cut-out portion having a recessed shape. ### Claim 6 (depends on 5) The radio IC device according to claim 5, wherein the cut-out portion with the recessed shape is arranged to have a relatively large width on a side close to an edge of the substrate and a relatively small width on a side which is perpendicular or substantially perpendicular to the side close to an edge of the substrate. ### Claim 7 (depends on 6) The radio IC device according to claim 6, wherein the first wiring electrode has a meandering shape. ### Claim 8 (depends on 5) The radio IC device according to claim 5, wherein the cut-out portion with the recessed shape is arranged to have a relatively small width on a side close to an edge of the substrate and a relatively large width on a side which is perpendicular or substantially perpendicular to the side close to an edge of the substrate. ### Claim 9 (depends on 8) The radio IC device according to claim 8, wherein a land portion of the first wiring electrode is displaced from the cut-out portion in a lateral direction and the second wiring electrode is arranged opposite to the displaced land portion in the lateral direction. ### Claim 10 (depends on 5) The radio IC device according to claim 5, wherein the cut-out portion with a recessed shape includes an additional cut-out portion arranged under the first wiring electrode and the second wiring electrode. ### Claim 11 (depends on 10) The radio IC device according to claim 10, wherein the additional cut-out portion overlaps an entirety of the first wiring electrode and only a portion of the second wiring electrode. ### Claim 12 (depends on 1) The radio IC device according to claim 1, wherein the first wiring electrode has a meandering shape. ### Claim 13 (depends on 1) The radio IC device according to claim 1, wherein a capacitive element is connected between the first wiring electrode and the second wiring electrode. ### Claim 14 (depends on 1) The radio IC device according to claim 1, wherein the radio IC element is arranged outside an entirety of the loop defined when viewed from the X-direction, the loop defined when viewed from the Y-direction, and the loop defined when viewed from the Z-direction. ### Claim 15 (depends on 1) The radio IC device according to claim 1, wherein the radio IC element is a radio IC chip arranged to process a high-frequency signal. ### Claim 16 (depends on 1) The radio IC device according to claim 1, wherein the radio IC element includes a radio IC chip arranged to process a high-frequency signal, and a feeder circuit board including a feeder circuit having a predetermined resonance frequency. ### Claim 17 (depends on 16) The radio IC device according to claim 16, wherein the feeder circuit board includes two inductance elements. ### Claim 18 (depends on 17) The radio IC device according to claim 17, wherein the two inductance elements are arranged to generate magnetic fields; and the magnetic fields of respective ones of the two inductance elements are reversed. ### Claim 19 (depends on 1) A radio communication terminal including the radio IC device according to claim 1. ### Claim 20 (depends on 1) The radio IC device according to claim 1, wherein the first wiring electrode is arranged to extend over a portion of the substrate in which the planar conductor is not provided.