Abstract: An electric wire capable of reducing an AC resistance equal to or less than the copper wire. In the electric wire in a single layered structure having a first layer of a substance having lower conductivity than copper, a radius of the wire is less than a skin depth, and an alternating current resistance value of the wire at a frequency used in the wire is greater than or equal to a sum of a direct current resistance value of the wire and a direct current resistance value of a copper wire having a same shape and a same outer diameter as the wire, and less than or equal to an alternating current resistance of the copper wire.

Abstract: In an on-vehicle antenna device (1), an on-vehicle antenna device (10) which is provided at an end part of a roof (20) includes an antenna (11) which has antenna elements (14, 15) drawn out from one feed point (13a) in a first direction and drawn out from another feed point (13b) in a second direction. The first direction is direction intersecting with a horizontal plane in accordance with the on-vehicle antenna device (10) is mounted on a vehicle body (1).

Abstract: The present invention provides a time delay device which allows changing, in accordance with a frequency of a local signal, a delay in a radio frequency signal supplied to an antenna element and also allows reducing a degree of dependency of the delay on a radio frequency in a band which is used. Each of (i) dispersion caused by a first dispersion imparting filter which gives a delay to a first local signal and (ii) dispersion caused by a second dispersion imparting filter which gives a delay to an intermediate frequency signal generated from the first local signal and the radio frequency signal is set to have a positive or negative sign which is opposite to the sign of the other.

Abstract: The present invention includes: a film antenna (10); a cable (20) which is connected to a feed section (14) of the film antenna (10); and a support (30) around which at least part of the film antenna (20) is wound, the support (30) including a holding section for holding the cable (20).

Abstract: An antenna (1) of the present invention includes: a dielectric substrate (11); an antenna conductor (12) including: a power feeding line (12a) that extends in a first direction; and a stub (12b); and a ground conductor (13). The antenna (1) further includes: a first parasitic element (12d) facing a first side of the stub (12b) which first side is on a side of a direction opposite to the first direction; and a second parasitic element (12e) facing a second side of the stub (12b) which second side is on the first direction side.

Abstract: An antenna includes a dielectric substrate, an antenna conductor, a ground conductor, a waveguide tube, a shield, and short-circuit portions. The shield is provided with a cut having a reverse-taper shape whose width becomes greater from an open end of the cut to an inward end of the cut. The short-circuit portions are provided along a whole periphery of the shield except for a portion provided with the cut.

Abstract: An antenna (1) including a dielectric substrate (10), an antenna element (11), a feed line (12), and a ground plate (13) is configured such that the feed line (12) and the ground plate (13) which face each other via the dielectric substrate (10) constitute a microstrip line which functions as a BRF.

Abstract: A loop antenna in accordance with the present invention has an antenna element having a shape that traces a closed curve, the antenna element including (i) a first projection section which projects from one of two end sections of the antenna element toward an inside of the closed curve and (ii) a second projection section which projects from the other of the two end sections of the antenna element toward the inside of the closed curve, each of the first projection section and the second projection section including a feed point.

Abstract: An antenna element (115) of an antenna device has first and second root sections (117) and (118) and an intermediate section lying between the first and second root sections (117) and (118). A feed section (114) is provided in the first and second root sections (117) and (118). The first and second root sections (117) and (118) are arranged so as to surround the feed section (114), and are provided in a wind section (113). Tail end linear parts in the wind section (113) extend in respective opposite directions. At least one of the first and second root sections (117) and (118) has a wider width part, which is formed such that a portion that overlaps a feed line connected with the feed section (114) is larger in width than other portions. This makes it possible to realize high radiant gain and improve a VSWR characteristic for each radio wave.

Abstract: An antenna device (100) includes an antenna element (101) and an electric conductor plate (102) provided so as to face the antenna element (101). The antenna element (101) and the electric conductor plate (102) are short-circuited by a short-circuit section (104). The antenna element (101) is connected with both of external and internal electric conductors (122) and (123) constituting a feed line (121).

Abstract: A high-frequency wire includes: a conductor portion which includes an inner layer formed of a material having lower conductivity than copper, and an outer layer which coats the inner layer and is formed of copper. In a frequency range of an AC current for using the high-frequency wire, in a case where a skin thickness ? [m] of a copper wire including a conductor portion formed of pure copper is defined as ?=?(2/???), a thickness t [m] of the outer layer satisfies 1.1?<t<2.7?. Here ? indicates an angular frequency of a current, which is represented by 2?f, ? indicates magnetic permeability [H/m] of the copper wire, ? indicates conductivity [??1m?1] of copper, and f indicates a frequency [Hz].

Abstract: An electric wire capable of reducing an AC resistance equal to or less than the copper wire. The wire includes a single layered structure having a first layer of a substance having lower conductivity than copper, or includes a double-layered structure in which a second layer of copper is formed on a periphery of the first layer, wherein a radius of the wire is smaller than a skin depth thereof, an alternating current resistance value of the wire at a frequency used in the wire is provided in excess of a sum of a value obtained by multiplying a direct current resistance value of the wire by a ratio of a cross-sectional area of the first layer and an entire cross-sectional area of the wire, and a direct current resistance value of a copper wire having a same shape and a same outer diameter as the wire.

Abstract: An electric wire includes a conductive portion 11 made of a material having a volume resistivity higher than that of copper, wherein the volume resistivity of the conductive portion is specified so that, in a frequency range in which the electric wire is used, a ratio of AC resistance of the conductive portion 11 to AC resistance of reference copper wire is less than 1.

Abstract: A dipole antenna in accordance with the present invention includes a first antenna element provided in a two-dimensional surface and having a linear shape and a second antenna element provided in the two-dimensional surface and having a spiral shape that circles around the first antenna element.

Abstract: An antenna includes a dielectric substrate, an antenna conductor, a ground conductor, a waveguide tube, a shield, and short-circuit portions. The shield is provided with a cut having a reverse-taper shape whose width becomes greater from an open end of the cut to an inward end of the cut. The short-circuit portions are provided along a whole periphery of the shield except for a portion provided with the cut.

Abstract: An antenna device (10) includes: an antenna (100) including a radiating element (101) and an internal ground (103); a coaxial cable (200) whose internal conductor (204) is connected with the radiating element (101) and whose external conductor (203) is connected with the internal ground (103); and an external ground (500) connected with the external conductor (203) of the coaxial cable (200).

Abstract: An antenna device (10) includes: an antenna (100) including a radiating element (101) and an internal ground (103); a coaxial cable (200) whose internal conductor (204) is connected with the radiating element (101) and whose external conductor (203) is connected with the internal ground (103); and an external ground (500) capacitive-coupled with the external conductor (203) of the coaxial cable (200).

Abstract: A main body (100) of a window frame (10) in accordance with an embodiment of the present invention includes a holding section (130) that holds an end part of a window (32) with the use of a window guide (36) made of rubber. A film antenna (200) incorporated into the main body (100) includes a feed section (230) located so as not to overlap the window guide (36) when the main body (100) in a plan view is viewed from a vehicle-exterior side.

Abstract: An integrated antenna (1) includes: a first loop antenna (11) having a first annular antenna element (11a); and a second loop antenna (13) having a second annular antenna element (13). The second annular antenna element (13) is arranged, on a surface identical to that where the first annular antenna element (13a) is arranged, so as to surround the first annular antenna element (13a).

Abstract: A dipole antenna of the present invention is more compact and has a wider bandwidth as compared with a conventional dipole antenna. A dipole antenna (DP) includes antenna elements (E1) and (E2) on a single plane. (E1) includes a linear section (E1a) extending from an end of (E1) in a first direction, and a linear section (E1b) connected to (E1a) via a bending section (E1c), (E1b) extending from (E1c) in a direction opposite to the first direction. (E2) includes a linear section (E2a) extending from an end of (E2) in the direction opposite to the first direction, and a linear section (E2b) connected to (E2a) via a bending section (E2c), (E2b) extending from (E2c) in the first direction. (E1) and (E2) are such that (E1a) is provided between (E2a) and (E2b), and (E2a) is provided between (E1a) and (E1b).