Abstract: An antenna element has an upstanding section erected from a base member; a tuning section extended from the upper end of the upstanding section into one direction in a parallel plane parallel to the base member, bent in the middle, and then extended in the direction opposite the one direction; and an open element section extended from the front end of the tuning section in the direction in which the open element section spirally turns in the parallel plane about the upstanding section.

Abstract: Provided is an antenna device with which the degradation of characteristics arising from the fact that the antenna has been miniaturized and made thinner is reduced and in which it is possible to increase the gain and to widen the coverage area by improving the characteristics of the internal antenna. The device is equipped with a circuit board, a wireless circuit component which is mounted on the substrate, an internal antenna which is connected to the wireless circuit component which is mounted on the substrate, a circuit-side ground pattern which is connected to the wireless circuit component which is mounted on the substrate, and a dedicated antenna ground paten which is connected to the internal antenna which is mounted on the circuit board.

Abstract: An antenna device, wherein the polarization is improved by an identical antenna or substrate, and a higher gain and a smaller size are provided even when the installation conditions are changed. The antenna includes a base provided with a power feed point electrically connected to a power feed unit in a wireless circuit, an antenna element set up on the base and electrically connected to the power feed point, and a ground pattern provided on the base. The antenna element includes a rise part which rises from the base and an element part extending from the top edge of the rise in any direction in the plane parallel to the base. The ground pattern is divided into at least two ground regions by a boundary, and a ground connection part which electrically and locally connects the ground regions.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: Provided is an antenna device with which the degradation of characteristics arising from the fact that the antenna has been miniaturized and made thinner is reduced and in which it is possible to increase the gain and to widen the coverage area by improving the characteristics of the internal antenna. The device is equipped with a circuit board, a wireless circuit component which is mounted on the substrate, an internal antenna which, is connected to the wireless circuit component which is mounted on the substrate, a circuit-side ground pattern which is connected to the wireless circuit component which is mounted on the substrate, and a dedicated antenna ground paten which is connected to the internal antenna which is mounted on the circuit board.

Abstract: An antenna device, wherein the polarization is improved by an identical antenna or substrate, and a higher gain and a smaller size are provided even when the installation conditions are changed. The antenna includes a base provided with a power feed point electrically connected to a power feed unit in a wireless circuit, an antenna element set up on the base and electrically connected to the power feed point, and a ground pattern provided on the base. The antenna element includes a rise part which rises from the base and an element part extending from the top edge of the rise in any direction in the plane parallel to the base. The ground pattern is divided into at least two ground regions by a boundary, and a ground connection part which electrically and locally connects the ground regions.

Abstract: An antenna apparatus includes a coaxial cable body configured by covering the peripheral portion of a core forming the power feed line with a first coating dielectric unit, a ground line and a second coating dielectric unit in that order, a main antenna element in which the core either singly or in combination with the first coating dielectric unit projects and extends from the distal end of the coaxial cable body, and an impedance adjustment element in which the ground line projects singly from the distal end of the coaxial cable body, and the impedance adjustment element maintains an orientation extending in a direction that differs from the extension direction of the main antenna element and is fixed to the distal end of the coaxial cable body.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: An antenna device is provided with a base material having a power feed section to which a power feed line is connected; an antenna element connected to the power feed section; and a matching circuit section, which is connected to the power feed section and the antenna element and matches the reactance of the antenna element and that of the power feed line with each other. The antenna element is provided with an impedance control section, which is annularly formed and has passive components connected thereto, on an opened leading end section.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: An antenna element has an upstanding section erected from a base member; a tuning section extended from the upper end of the upstanding section into one direction in a parallel plane parallel to the base member, bent in the middle, and then extended in the direction opposite the one direction; and an open element section extended from the front end of the tuning section in the direction in which the open element section spirally turns in the parallel plane about the upstanding section.

Abstract: The power line communications system of the present invention comprises a power line L that has a plurality of branch lines LB1 to LBn branched at a branch point; communications devices T1 to Tn that are connected to the branch lines LB1 to LBn and perform sending and receiving of data via the branch lines LB1 to LBn; and a relay device 1 that is disposed at the branch point and relays sending of the data. It is also provided with a branching device Y that consists of a plurality of couplers K1 to Kn that couple the relay device 1 and the plurality of branch lines LB1 to LBn and have different resonance frequencies for each of the respective branch lines LB1 to LBn, with the relay device 1 performing sending of data by changing the communication frequency to the resonance frequency of the branch lines LB1 to LBn through which the data are sent.

Abstract: There is provided an antenna device including a substrate, an earth section which is disposed on a portion of the substrate, a feed point which is disposed on the substrate, a loading section disposed on the substrate and constructed with a line-shaped conductor pattern which is formed in a longitudinal direction of an elementary body made of a dielectric material, an inductor section which connects one end of the conductor pattern to the earth section, and a feed point which feeds a current to a connection point of the one end of the conductor pattern and the inductor section, wherein a longitudinal direction of the loading section is arranged to be parallel to an edge side of the earth section.

Abstract: A wireless temperature sensor that is attached to the patient's skin in order to measure the patient's temperature, thereby adopting a patient moving in the facilities as a measuring object. The wireless sensor is a wireless temperature sensor?having a function of wirelessly transmitting measured data through a chip antenna, and the chip antenna has a length of a shortening coefficient so as to be received in a container, and is received in the container. In addition, the invention provides a wireless interface device in which a wireless communication function is provided to a wireless communication card having a low carrier frequency, a small antenna, an enlarged communication distance, and low power consumption. Furthermore, the invention provides a wireless sensor system in which the sensor notifies a patient of surrounding environment information by a wireless communication device whereby a base station collects the environment information from a plurality of sensors.

Abstract: An antenna includes a plurality of bases stacked in a thickness direction, conductor patterns formed on the bases, respectively, and conducting sections for electrically interconnecting the conductor patterns. The conductor patterns form inductance components and capacitance components.

Abstract: The present invention relates to a radio server system. The communications service area of this radio server system is made of a plurality of zones and the radio server system connects to the Internet via a radio server in which a mobile radio is connected to a base station radio by carrying out data communications between base station radios in each of the zones and a plurality of mobile radios such that the base station radio continuously sends data and the mobile radio sends a burst signal to the base station radio, wherein the base station radio communicates using a single frequency that is different from the frequency used by neighboring base station radios, and each mobile radio detects the frequency used by the base station radio in the base station radio's zone and communicates with the base station radio using the detected frequency.

Abstract: The present invention relates to a radio server system. The communications service area of this radio server system is made of a plurality of zones and the radio server system connects to the Internet via a radio server in which a mobile radio is connected to a base station radio by carrying out data communications between base station radios in each of the zones and a plurality of mobile radios such that the base station radio continuously sends data and the mobile radio sends a burst signal to the base station radio, wherein the base station radio communicates using a single frequency that is different from the frequency used by neighboring base station radios, and each mobile radio detects the frequency used by the base station radio in the base station radio's zone and communicates with the base station radio using the detected frequency.