Abstract: An array antenna includes: a first antenna element and a second antenna element configured to transmit and receive radio waves; and a feeding line configured to feed the first antenna element and the second antenna element in series, wherein the first antenna element and the second antenna element respectively have a feeding element fed from the feeding line and a parasitic element part having a parasitic element, the parasitic element part being provided to face the feeding element, and a number of the parasitic element of the parasitic element part in the first antenna element is different from a number of the parasitic element of the parasitic element part in the second antenna element.

Abstract: The antenna includes: a reflective member including a flat part; a first antenna element disposed on the flat part of the reflective member, the first antenna element being configured to transmit and receive radio waves of a first polarization; a second antenna element disposed on the flat part of the reflective member, one end of the second antenna element being located close to one end of the first antenna element, the second antenna element being configured to transmit and receive radio waves of a second polarization different from the first polarization; and a conductive member disposed close to the one ends of the first antenna element and the second antenna element and near a point of intersection where the first antenna element and the second antenna element meet when extended.

Abstract: An array antenna is provided with: a first conductive member including a planar part; plural antennas arranged at a predetermined first interval to the planar part of the first conductive member, each of the plural antennas transmitting and receiving radio frequencies of a first polarization and radio frequencies of a second polarization that is different from the first polarization; and a second conductive member provided between the antennas adjacent to each other among the plural antennas via a gap of a predetermined second interval to the planar part of the first conductive member, the second conductive member being capacitively coupled to the first conductive member.

Abstract: An antenna structure as an example of a structure including a transparent conductor includes: an antenna as an example of the transparent conductor; a film transmitting a visible light; a positioning structure configured to position the film from an invisible side of a ceiling as an example of a facility; and a flange transmitting the visible light and configured to position the film from a visible side of the ceiling and including a lens part at a position facing the positioning structure.

Abstract: The antenna structure as an example of a structure including a mesh-like transparent conductor includes: a film made of an electrical insulating material transmitting visible light; a surface section provided on one face of the film, made of a mesh-like conductive material, and having a predetermined shape; and a bordering section provided on the one face of the film and configured to border at least a part of edges of the surface section ? with a conductive material.

Abstract: An array antenna is provided with: a first conductive member including a planar part; plural antennas arranged at a predetermined first interval to the planar part of the first conductive member, each of the plural antennas transmitting and receiving radio frequencies of a first polarization and radio frequencies of a second polarization that is different from the first polarization; and a second conductive member provided between the antennas adjacent to each other among the plural antennas via a gap of a predetermined second interval to the planar part of the first conductive member, the second conductive member being capacitively coupled to the first conductive member.

Abstract: An antenna structure to which the present invention is applied includes: a film that transmits visible light and has antennas formed thereon; a feeding part to which coaxial cables for feeding power to the antennas are connected; a flange that transmits visible light and is used for positioning the film from a visible side of equipment; and positioning structures for positioning the film from an invisible side of the equipment.

Abstract: An antenna structure as an example of a structure including a transparent conductor includes: an antenna as an example of the transparent conductor; a film transmitting a visible light; a positioning structure configured to position the film from an invisible side of a ceiling as an example of a facility; and a flange transmitting the visible light and configured to position the film from a visible side of the ceiling and including a lens part at a position facing the positioning structure.

Abstract: An antenna structure to which the present invention is applied includes: a film that transmits visible light and has antennas formed thereon; a feeding part to which coaxial cables for feeding power to the antennas are connected; a flange that transmits visible light and is used for positioning the film from a visible side of equipment; and positioning structures for positioning the film from an invisible side of the equipment.

Abstract: The antenna includes: a reflective member including a flat part; a first antenna element disposed on the flat part of the reflective member, the first antenna element being configured to transmit and receive radio waves of a first polarization; a second antenna element disposed on the flat part of the reflective member, one end of the second antenna element being located close to one end of the first antenna element, the second antenna element being configured to transmit and receive radio waves of a second polarization different from the first polarization; and a conductive member disposed close to the one ends of the first antenna element and the second antenna element and near a point of intersection where the first antenna element and the second antenna element meet when extended.

Abstract: The antenna structure as an example of a structure including a mesh-like transparent conductor includes: a film made of an electrical insulating material transmitting visible light; a surface section provided on one face of the film, made of a mesh-like conductive material, and having a predetermined shape; and a bordering section provided on the one face of the film and configured to border at least a part of edges of the surface section a with a conductive material.

Abstract: A film antenna 1 to which the present invention is applied includes: an antenna part 10 in which a dual-frequency antenna 12a and an antenna GND section 12b are formed; a feeding board 21 to which a coaxial cable 30 for feeding the antenna part 10 is connected; and a pressing member 23 which, together with the feeding board 21, sandwiches a contact point 13, coated with silver paste 22, of the antenna part 10, and electrically connects the contact point 13 and the feeding board 21 to one another.

Abstract: A film antenna 1 to which the present invention is applied includes: an antenna part 10 in which a dual-frequency antenna 12a and an antenna GND section 12b are formed; a feeding board 21 to which a coaxial cable 30 for feeding the antenna part 10 is connected; and a pressing member 23 which, together with the feeding board 21, sandwiches a contact point 13, coated with silver paste 22, of the antenna part 10, and electrically connects the contact point 13 and the feeding board 21 to one another.

Abstract: A resonator 10 according to the present invention is provided with: an outer conductor 12 inside which a cavity 11 is formed; and an inner conductor 13 provided in the cavity 11 of the outer conductor 12. The inner conductor 13 includes: a movable body 133 provided to project into the cavity 11; a distal end portion 131 which is a separate member from the movable body 133 and which covers the distal end of the movable body 133, on the side of the movable body 133 that projects into the cavity 11; and a supporting rod 132 which is a rod-shaped member disposed inside the movable body 133, is provided with one end side fixed to the distal end portion 131 and the other end side fixed to the movable body 133, and which has a lower coefficient of thermal expansion than the movable body 133. By this means, it is possible to provide a resonator having a high temperature stability, which is applicable in multiple frequency bands, and a filter employing the resonator.

Abstract: A phase shifter, which reduces the loss of transmission/reception signals, includes: a linear conductor (211); a conductor (212) curved to form an arc of a radius Ro; and a conductor (214) that has a curving portion (214a) curved to form an arc of a radius Ri, and that also has an extending portion (214b) linearly extending from one end of the curving portion (214a). The phase (phase shift amount) varies depending on the rotation of the conductor (214) about a rotation axis (220) which causes the position of a part (?) where the curving portion (214a) overlaps the conductor (211) to move along the curving portion (214a) and the position of a part (?) where the extending portion (214b) overlaps the conductor (212) to move along the conductor (212).

Abstract: In this array antenna, if (a) a pair of antennas (130) are used and transmission signals having the same phase are fed in parallel via two secondary cables (33) branching off of a main cable (32), letting Z represent the impedance of the main cable (32), the impedance of each secondary cable (33) and the input impedance of each antenna (130) is set to 2Z; if (b) a set of three antennas (130) is used, the impedance of each secondary cable (33) and the input impedance of each antenna (130) is set to 3Z; and if (c) a set of N antennas (130) is used, the impedance of each secondary cable (33) and the input impedance of each antenna (130) is set to N×Z. In each case, the impedances match over a wide frequency band.

Abstract: The antenna is provided with: a conductor; an EBG structure that is disposed above the conductor and that contains plural square elements arranged in a matrix; and a radiation element disposed above the EBG structure. A distance L1 between the conductor and the EBG structure satisfies 0.01?0?L1?0.15?0, preferably satisfies 0.025?0?L1?0.085?0, and more preferably satisfies 0.035?0?L1?0.07?0, where an wavelength of a design center frequency of the radiation element is denoted by ?0.

Abstract: A rectifying element includes a first electrode having a first work function, a second electrode having a second work function larger than the first work function, and a semiconductor layer having a third work function that is a value between the first work function and the second work function, and joined to the first electrode and the second electrode.

Abstract: An omnidirectional vertical polarization antenna is configured of monopole antennas, the number of which is k (k?3), disposed on a circumference of a circle at equal spaces. An omnidirectional horizontal polarization antenna is configured of first to m-th omnidirectional antennas stacked in m (m?2) layers in a first direction perpendicular to a reflector, and each of the first to m-th omnidirectional antennas is configured of half-wave dipole antennas, the number of which is n. The half-wave dipole antennas, the number of which is n (n?3), configuring each of the first to m-th omnidirectional antennas are respectively configured of arc-shaped conductive bodies, and disposed, at equal spaces, on each of circumferences of circles, the number of which is m, having different diameters, when viewed from a direction opposite to the first direction. The first to m-th omnidirectional antennas are stacked from the reflector in the first direction.

Abstract: A vertically polarized antenna having a wide relative bandwidth while having a thin structure against vertically polarized waves. The vertically polarized antenna includes: a ground plate, a conductor plate, two or more feeding conductors, and short-circuit conductors grouped with the feeding conductors, respectively. The conductor plate is arranged parallel to the ground plate such that the whole of the conductor plate is overlapped with the ground plate when seen from a direction of a normal line of the ground plate; each of the feeding conductors connects the ground plate and the conductor plate at a position different from a center of the conductor plate; and each of the short-circuit conductors connects the ground plate and the conductor plate near the feeding conductor grouped with the short-circuit conductor.