Abstract: A wireless communication device is provided for transmitting and receiving a high-frequency signal having a first frequency for communication is disclosed. The device includes a loop pattern having a first electrode and a second electrode as both ends, an antenna pattern, a third electrode capacitively coupled to the first electrode, and a fourth electrode capacitively coupled to the second electrode. The device includes an RFIC having a capacitive impedance at a second frequency higher than the first frequency, and a first current path and a second current path connected in parallel with each other between the third electrode and the fourth electrode. The RFIC is included in the first current path and the second current path has an inductive impedance at a second frequency.

Abstract: A wireless communication device is provided that includes an RFIC module in which an RFIC chip and first and second terminal electrodes are incorporated, and an antenna member including an antenna base material and antenna patterns including first and second coupling portions. The RFIC module and the antenna member are bonded to each other via an insulating first adhesive layer. Between the first terminal electrode and the first coupling portion and between the second terminal electrode and the second coupling portion, a distance t1 from a surface of the RFIC module in contact with the first adhesive layer to the first and second terminal electrodes is larger than a thickness t2 of the first adhesive layer.

Abstract: An RFIC module is provided that includes a base material having a first surface and a second surface opposite to each other; an RFIC mounted on a first surface side of the base material; a first conductor pattern formed on the first surface of the base material; a first insulator film formed on the first surface of the base material and a surface of the first conductor pattern; a second conductor pattern formed on the first insulator film and the first conductor pattern; and a second insulator film covering a surface side of the base material with respect to the first surface. Moreover, the first and second conductor patterns form a circuit connected between RFIC-side electrodes to which the RFIC is connected and antenna-side electrodes facing an antenna conductor pattern.

Abstract: A wireless communication device transmits and receives a high-frequency signal having a first frequency as a carrier frequency. The device includes a base material made of paper, an antenna pattern of an Sn alloy formed on the base material, and an RFIC element connected electrically to the antenna pattern. Moreover, the antenna pattern including a thin wire part and a thick wire part that differ in wire width from each other.

Abstract: A wireless communication device that includes a first electrode connected to a first terminal electrode of an RFIC element and a second electrode connected to a second terminal electrode of the RFIC element. Moreover, the first electrode has a longitudinal direction and a lateral direction and has a first portion connected to the first terminal electrode and a second portion that faces the first portion and the second electrode. The first portion has an extended portion that extends in the longitudinal direction beyond a connection point between the second electrode and the second terminal electrode.

Abstract: A packaging paperboard is provided that includes two or more layers with an antenna pattern printed on one layer of the two or more layers, and an RFIC element adhered to the other layer of the two or more layers. In a laminate having the layers stuck together, the RFIC element and the antenna pattern are interposed between the layers to configure an RFIC device in which the RFIC element and the antenna pattern are electrically connected.

Abstract: A card-type wireless communication device is provided that suppresses a deterioration in communication performance of the dipole antenna while ensuring a larger coil antenna size in a limited card size. The card-type wireless communication device includes a coil antenna and a dipole antenna. The dipole antenna includes first dipole element including a first connection end connected to a second-frequency-band RFIC element, first linear part that extends from the first connection end along an outer edge of the coil antenna, and a first open end facing the outer edge of the coil antenna via the first linear part. Moreover, a second dipole element includes a second connection end connected to second-frequency-band RFIC element, and a second open end at a position farther from the outer edge of the coil antenna than a shortest distance between the first linear part and the outer edge of the coil antenna.

Abstract: An attention tag for a retail article that includes a label having an adhesive region bonded to a retail article and a protruding region that protrudes from the retail article when the label is attached thereto. Moreover, an RFID tag is disposed on the label and includes an RFIC element and an antenna pattern including first and second antenna portions that are respectively connected to first and second ends of the RFIC element. Moreover, the first antenna portion is disposed in the protruding region of the label while the second antenna portion of the RFID tag is disposed in the adhesive region of the label at a position facing a portion of the retail article.

Abstract: An antenna device is provided that can be designed easily and includes a flat antenna of which communication characteristics do not change significantly even when there exist metallic objects or the like in the surroundings. Moreover, the flat antenna is provided with an antenna-side signal line path conductor, an antenna-side first ground conductor, a matching circuit part, and an antenna-side connector part which are provided in an antenna-side insulator. The antenna device further includes a signal transmission cable that is provided with a radiation area setting part in the vicinity of a cable-side connector part. The antenna device is designed such that, by connecting the antenna-side connector part and the cable-side connector part to each other, substantially the entire surface of the flat antenna serves as a radiation part that radiates electromagnetic waves.

Abstract: A wireless communication device is provided that includes an RFIC module having an RFIC chip and first and second terminal electrodes connected to the RFIC chip. An antenna member is provided that includes an antenna pattern having first and second coupling portions and an antenna base material on which the antenna pattern is disposed. Moreover, an insulating sticky layer is disposed between the RFIC module and the antenna member, and is provided for bonding the RFIC module to the antenna member. The first terminal electrode and the first coupling portion are capacitively coupled, with the sticky layer in between, and the second terminal electrode and the second coupling portion are capacitively coupled, with the sticky layer in between.

Abstract: A material sheet is provided having antenna patterns that include first and second coupling portions that are transported toward a mounting position, and an adhesive member that is disposed on the material sheet before reaching the mounting position. At a pickup position, a mounting device picks up an RFIC module including an RFIC chip and first and second terminal electrodes connected to the RFIC chip. At the mounting position, the mounting device mounts the picked-up RFIC module onto the adhesive member on the material sheet so that the first coupling portion and the first terminal electrode face each other and so that the second coupling portion and the second terminal electrode face each other.

Abstract: In a method for reading from an RFID-tagged article and an RFID system, information is accurately read from an RFID tag while interference with other devices is prevented by use of a compact and simple configuration. An article is conveyed on a conveyor belt. Also, an RFID tag is attached to the article. Information on the RFID tag is read by a leaky coaxial cable that is a stationary read/write antenna in a vicinity of the conveyor belt. The leaky coaxial cable is above the conveyor belt and at least a portion of the cable traverses the conveyor belt.

Abstract: A wireless communication device for transmitting/receiving a high-frequency signal having a predetermined communication frequency. The wireless communication device includes an antenna pattern having an inductance component, an RFIC element connected electrically to the antenna pattern and a capacitive coupling portion capacitively coupling specific confronting regions facing each other of the antenna pattern at multiple points on the antenna pattern, to make up an LC parallel resonant circuit.

Abstract: An auxiliary antenna is provided that enables communication between a small antenna of an RFID tag and an antenna of a reader device without using a small antenna as the antenna of the reader device. The auxiliary antenna is an auxiliary antenna configured to expand a communication range of an antenna of an RFID tag to enable communication between the small antenna included in the RFID tag and an antenna included in a reader device. The auxiliary antenna includes a resonance loop group in which a plurality of resonance loops having a resonance frequency corresponding to a communication frequency is arranged to be coupled through a magnetic field. Moreover, the resonance loop group has an antenna area larger than the antenna area of the antenna of the RFID tag and equivalent to or larger than the antenna area of the antenna of the reader device.

Abstract: A highly reliable RFID tag is provided that is lighter and smaller and has a desired communication distance, and that can be applied to deformable articles. The RFID tag includes a first end of a first power feeding coil that is connected to a first input and output terminal of an RFIC element, a second end of the first power feeding coil that is connected to one end of a second power feeding coil, and the other end of the second power feeding coil is connected to a second input and output terminal of the RFIC element. Moreover, the RFID tag has a spring-shaped antenna that has a first region with magnetic field coupling of the first power feeding coil, and a second region with magnetic field coupling of the second power feeding coil. The first region and the second region are continuous via a region having an inductance component.

Abstract: Two input/output terminals are provided on a lower surface of an RFIC element. An antenna element includes an elastic material and connecting portions respectively connected to the two input/output terminals of the RFIC element, a loop that includes the connecting portions, and open-ended linear antenna portions that define and function as radiators. The line width of the loop is greater than that of each of the linear antenna portions.

Abstract: An RFID tag is providing for transmitting and receiving a communication signal. The RFID tag includes a base material, antenna patterns formed on the base material, and an RFIC package connected to the antenna patterns. The antenna patterns are defined by conductor patterns. The whole of the antenna patterns resonate at a communication frequency, and each of the plurality of conductor patterns has a line length that does not cause resonance at a frequency in a microwave band for electromagnetic wave heating higher than the communication frequency.

Abstract: An antenna is connected to a first end of a high-frequency transmission line, and a connector is connected to a second end of the high-frequency transmission line. A characteristic impedance of a microstrip line is higher than characteristic impedances of first and second strip lines, and a characteristic impedance of a coplanar line is higher than a characteristic impedance of the second strip line. Thus, at a certain frequency, a standing wave develops in which the position of the microstrip line and the position of the coplanar line are maximum voltage points and three-quarter-wavelength resonance is a fundamental wave mode. Thus, the cutoff frequency of the high-frequency transmission line is high, and an insertion loss of a signal is significantly reduced to be low over a wide band.

Abstract: A wireless communication device is provided for transmitting and receiving a high frequency signal having a first frequency for communication. The wireless communication device includes a base material, an antenna pattern formed on the base material, and a loop-shaped conductor pattern. The loop-shaped conductor pattern is formed on the same surface of the base material on which the antenna pattern is formed and arranged on both sides of the antenna pattern along an extending direction of the antenna pattern. A physical perimeter of the conductor pattern is shorter than the physical total length of the antenna pattern.

Abstract: A wireless communication device having a feeding circuit that includes an RFIC chip; and antenna elements connected to the feeding circuit. The feeding circuit FC further includes a first resonant loop including the RFIC chip and multiple inductance elements; and a second resonant loop including a capacitance element and multiple inductance elements. Moreover the inductance elements of each of the first and second resonant loops, the shared inductance elements are included. The second resonant loop includes an antenna port for connection to the antenna elements.