Abstract: An attachable booster antenna attachable to a coil antenna, includes a body; and an antenna including a multiple resonant antennas arrayed on the body, with each resonant antenna including an insulator layer having first and second surfaces; and first and second loop antennas disposed on the first and second surfaces, respectively, so as to confront each other via the insulator layer. Moreover, the first and second loop antennas each having an opening that discontinue a part of a loop and are arranged such that a closed loop is defined by at least a part of the first loop antenna and at least a part of the second loop antenna in a transparent plane viewed from a normal direction of the insulator layer. Furthermore, in the plan view of the insulator layer, the opening of the first and second loop antennas and the opening of the coil antenna overlap each other.

Abstract: A surface mount coil component includes an element body defining a compact including magnetic material particles; a coil that is buried, excluding an end portion of the coil, in the element body; and an input-output terminal electrically connected to the end portion of the coil. A thermoplastic resin layer is provided on a surface on a mounting surface side of the element body. An interlayer connection conductor is provided in the thermoplastic resin layer. The input-output terminal is provided on a surface of the thermoplastic resin layer and is electrically connected to the end portion of the coil via the interlayer connection conductor.

Abstract: An RFID auxiliary antenna device is provided on an article that is adjacent to an RFID tag to be communicated or accommodates the RFID tag. The RFID auxiliary antenna device includes a conductive pattern that circles the article. A capacitance component generated between conductive patterns and an inductance component of the conductive pattern configure a resonant circuit. A resonant frequency of the resonant circuit is equal to or substantially equal to a communication frequency of the RFID tag, and the RFID auxiliary antenna device is magnetically coupled to each of the RFID tag and a reader/writer.

Abstract: A communication device for communicating with wireless communication devices is provided that includes a shield device defining a plurality of shield spaces arranged along a transport path transporting a sheet on which a plurality of wireless communication devices are arrayed; and a plurality of reader/writer antennas arranged in each of the plurality of shield spaces. Moreover, the plurality of shield spaces are juxtaposed corresponding to an array pitch between the wireless communication devices on the sheet, a part of the shield device is arranged between the plurality of reader/writer antennas, and the plurality of reader/writer antennas are arranged at a side facing a transport surface of the transport path.

Abstract: An antenna device is provided as a near-field communication antenna device that is configured by arranging a plurality of loop antennas. Each loop antenna includes a plurality of parallel circuits each having a capacitor and a resistance element; and a plurality of looped conductors in a shape of a loop that is divided. The divided looped conductors are connected to each other via the parallel circuits, and the plurality of looped conductors and the plurality of parallel circuits form a loop.

Abstract: A container is provided that includes an RFID module, and further includes an insulating base material that forms an outer shape of the container; a metal film formed on a first main surface of the insulating base material; and a slit formed in the metal film. Moreover, the RFID module includes an RFIC element, a filter circuit that transmits a current caused by an electromagnetic wave at a unique resonance frequency serving as a communication frequency to the RFIC element, and first and second electrodes connected to the filter circuit. The metal film is formed to wrap around an outer periphery of the container in a direction intersecting the slit, and the first and second electrodes of the RFID module are electrically connected to the metal film across the slit formed between the first electrode and the second electrode.

Abstract: An RFID tag manufacturing system is provided that includes a conveyance device that conveys a base sheet provided with a plurality of antenna patterns to each of which an RFIC module is fixed. The system includes a laminating device that attaches a cover seal on the base sheet to cover the antenna patterns and a punching device that produces RFID tags by punching the cover seal and the base sheet with a punching blade that includes a frame-shaped cutting edge surrounding the antenna patterns to form a frame-shaped cut. The base sheet includes alignment mark in a non-attachment part of the cover seal. The punching device specifies the position of each of the antenna patterns covered with the cover seal based on the alignment mark, and punches the cover seal and the base sheet based on the specified position of the antenna pattern.

Abstract: An RFIC module is provided that includes a base material having a first face and a second face opposite to each other, an RFIC mounted above the first face of the base material, and RFIC-side terminal electrodes that are formed on the first face of the base material and are connected to the RFIC. An insulator film is formed on the surface of the RFIC-side terminal electrode, and conductor films facing the RFIC-side terminal electrode are formed on the insulator film. Moreover, additional capacitances are formed between the RFIC-side terminal electrodes and the conductor films.

Abstract: A surface mount coil component includes an element body with a first surface, a second surface that opposes the first surface, and a third surface connecting the first surface and the second surface, the element body being defined by a compact including magnetic particles; a first conductor pattern provided at the first surface of the element body; a second conductor pattern provided at the second surface of the element body; input/output terminals provided at the third surface of the element body; and metal pins embedded in the element body, ends of each metal pin being connected to the first and second conductor patterns. The first conductor pattern, the second conductor pattern, and the metal pins define a coil conductor. The input/output terminals are defined by a pair of metal pins exposed at the third surface.

Abstract: A coil component manufacturing method includes embedding coils in a flat plate-shaped element body defined by a molded body including magnetic particles such that the coils are in a matrix and winding axes of the coils extend in a thickness direction of the element body, one end portion of each of the coils is exposed to one main surface of the element body, and the other end portion of each of the coils is exposed to the other main surface of the element body, forming electrode films defining input/output terminals on both main surfaces of the element body so as to make contact with one of the end portions of each of the coils, and performing segmentation into individual coil components by cutting the element body at location between the coils adjacent to each other in the thickness direction.

Abstract: An electronic device is provided with an electronic component having a base material and a terminal electrode formed on a first surface of the base material, and a circuit substrate in which a pad for mounting the electronic component is formed on a first surface. A hole for light transmission is formed in the pad, and the pad and the terminal electrode are electrically and mechanically connected to each other with a cured product of optical firing paste obtained by receiving light from a second surface that is a surface opposite to the first surface of the circuit substrate.

Abstract: An IC module is provided that includes an IC having a terminal electrode, and a substrate having a first surface and a second surface opposite to each other and having a land formed on the first surface. Moreover, the land is connected to the terminal electrode of the IC. On the first surface of the substrate, an insulator layer that covers an area outside of a formation area of the land is formed. A difference between a thickness of the insulator layer and a thickness of the IC is smaller than a difference between the thickness of the insulator layer and a thickness of the substrate, and the thickness of the substrate is smaller than the thickness of the insulator layer.

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: 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 cable type antenna is provided having a small-sized lightweight configuration and enabling specifying of a radiation region having a desired antenna length. The cable type antenna may be sectionalized into a first region on the power feeding circuit side and a second region on the leading end side. The cable type antenna of the present disclosure further comprises a balanced-to-unbalanced transformer element disposed between the first region and the second region, wherein the balanced-to-unbalanced transformer element includes an unbalanced-side terminal connected to the first region and a balanced-side terminal connected to the second region configured to allow the first region to serve as a non-radiation part and the second region to serve as a radiation part.

Abstract: A sanitary article is equipped with a moisture-detecting RFID tag that includes a moisture-absorptive material; a moisture-detecting RFID tag adjacent to the moisture-absorptive material; and a relay antenna that is connected to the moisture-detecting RFID tag and that extends the communication range by relaying an output of the moisture-detecting RFID tag. Moreover, the moisture-detecting RFID tag includes an RFIC element, and an antenna element that is connected to the RFIC element. The moisture-detecting RFID tag outputs a variation of a communication distance or a signal intensity, originated from a variation of a moisture amount included in the moisture-absorptive material.

Abstract: An RFID reader/writer antenna device is provided that includes a first radiating element, a second radiating element, a third radiating element, baluns, a phase shifter, and a distributor. The radiating elements each comprise conductor patterns with extending directions that are parallel to each other, and used for reading or writing of RFID tags. The distributor connects the first radiating element, the second radiating element, and the third radiating element to a common input/output. The phase shifter causes a feeding phase of the second radiating element and feeding phases of the first radiating element and the third radiating element to have a phase difference of 90°. The baluns perform conversion between a balanced signal and an unbalanced signal.

Abstract: A common mode choke coil includes a differential transmission line including first and second signal lines, a main circuit including a first coil provided in the first signal line, and a second coil provided in the second signal line and connected to the first coil by magnetic field coupling, and a parallel resonance circuit including a third coil connected to both the first and second coils by magnetic field coupling, and a first capacitor electrically connected in parallel to the third coil. In the common mode choke coil, a first resonant frequency of the main circuit is equal or substantially equal to a second resonant frequency of the parallel resonance circuit.