Abstract: An antenna device of the present invention includes, in one aspect: a patch antenna having a resonant frequency at a first frequency; and a loop antenna having a resonant frequency at a second frequency that is different from the first frequency. A loop length of the loop antenna is such that standing waves are generated in the loop antenna when the loop antenna receives radio waves of the first frequency, and the patch antenna is disposed so as to magnetically couple with the loop antenna.

Abstract: An antenna device including an antenna element which transmits or receives an electromagnetic wave having a specific frequency by being supplied with electric power; a conductive element which is a parasitic element; and a square-shaped housing which includes a wall-thickness portion having a predetermined wall thickness. The antenna element is provided inside the square-shaped housing. The conductive element is provided only inside the wall-thickness portion which is included in any one side of the square-shaped housing, is electromagnetically coupled to the antenna element without being galvanically connected with other components, resonates with the specific frequency, and transmits or receives the electromagnetic wave.

Abstract: An antenna device of the present invention includes an antenna element which transmits or receives an electromagnetic wave having a specific frequency by being supplied with electric power, a conductive element which is formed of a conductive material, arranged so as to be spaced apart from and face the antenna element, and serves as a parasitic element, and a housing having a sealed space therein. The antenna element is provided inside the housing, and the conductive element is provided on outer surface of the housing, or in inner part of the housing, or in a mount member by which the housing is worn on a human body, or in a holding member for holding the housing; the conductive element is electromagnetically coupled to the antenna element, resonates with the specific frequency; and transmits or receives the electromagnetic wave.

Abstract: An antenna device includes an antenna element including a conductor; and a dielectric component. The antenna element includes a conductor. The dielectric component has a dielectric loss of 0.002 or greater. The dielectric component is attached to the antenna element.

Abstract: An antenna device of the present invention includes, in one aspect: a patch antenna having a resonant frequency at a first frequency; and a loop antenna having a resonant frequency at a second frequency that is different from the first frequency. A loop length of the loop antenna is such that standing waves are generated in the loop antenna when the loop antenna receives radio waves of the first frequency, and the patch antenna is disposed so as to magnetically couple with the loop antenna.

Abstract: An antenna device of the present invention includes an antenna element which transmits or receives an electromagnetic wave having a specific frequency by being supplied with electric power, a conductive element which is formed of a conductive material, arranged so as to be spaced apart from and face the antenna element, and serves as a parasitic element, and a housing having a sealed space therein. The antenna element is provided inside the housing, and the conductive element is provided on outer surface of the housing, or in inner part of the housing, or in a mount member by which the housing is worn on a human body, or in a holding member for holding the housing; the conductive element is electromagnetically coupled to the antenna element, resonates with the specific frequency; and transmits or receives the electromagnetic wave.

Abstract: An oxide material including gallium, zinc and oxygen, a ratio of the number of atoms of zinc to the number of atoms of gallium (number of atoms of zinc/number of atoms of gallium) being from about 0.01 to about 0.6 and a ratio of the number of atoms of oxygen to the sum of the number of atoms of gallium and the number of atoms of zinc (number of atoms of oxygen/(number of atoms of gallium+number of atoms of zinc)) being from about 1.0 to about 1.6, is disclosed. An electrophotographic photoreceptor including a layer which includes the oxide material is also disclosed. An electrophotographic photoreceptor including a substrate; and a photosensitive layer including gallium, oxygen and zinc is also disclosed.

Abstract: A multiband antenna includes a conductive antenna element portion and a conductive ground element portion which are provided on an insulating film. The antenna element portion includes a first antenna element having a length corresponding to a first resonance frequency, and a second antenna element having a length corresponding to a second resonance frequency. The ground element portion includes a first side having a length to resonate at the first resonance frequency, and a second side having a length to resonate at the second resonance frequency.

Abstract: There is provided an electrophotographic photoreceptor comprising, in this order a substrate; a photosensitive layer; and a protective layer including oxygen and gallium, the protective layer including a first region and a second region that is present closer to the substrate than the first region and has a ratio of the number of atoms of oxygen to the number of atoms of gallium (oxygen/gallium) larger than that in the first region.

Abstract: An antenna with a built-in filter for use in an electronic device includes: an antenna element; and a circuit board unit connected to the antenna element, wherein the circuit board unit includes: a filter circuit that filters input and output signals of the antenna element; and a matching circuit that performs impedance matching of the antenna element.

Abstract: The present invention provides an electrophotographic photoreceptor having at least a photosensitive layer and a surface layer provided at a surface of the photosensitive layer. The surface layer contains a first layer which is provided at the photosensitive layer side and has a refractive index of n1 and a second layer which is provided at the opposite side of the first layer to the photosensitive layer and has a refractive index of n2. The refractive index of the photosensitive layer, the refractive index of the first layer, the refractive index of the second layer, the film thickness of the first layer, an integer of 0 or more, and the wavelength of light with which the surface of the photoreceptor is irradiated when an electrostatic latent image is formed satisfy specific relationships.

Abstract: An oxide material including gallium, zinc and oxygen, a ratio of the number of atoms of zinc to the number of atoms of gallium (number of atoms of zinc/number of atoms of gallium) being from about 0.01 to about 0.6 and a ratio of the number of atoms of oxygen to the sum of the number of atoms of gallium and the number of atoms of zinc (number of atoms of oxygen/(number of atoms of gallium+number of atoms of zinc)) being from about 1.0 to about 1.6, is disclosed. An electrophotographic photoreceptor including a layer which includes the oxide material is also disclosed. An electrophotographic photoreceptor including a substrate; and a photosensitive layer including gallium, oxygen and zinc is also disclosed.

Abstract: An oxide material including gallium, zinc and oxygen, a ratio of the number of atoms of zinc to the number of atoms of gallium (number of atoms of zinc/number of atoms of gallium) being from about 0.01 to about 0.6 and a ratio of the number of atoms of oxygen to the sum of the number of atoms of gallium and the number of atoms of zinc (number of atoms of oxygen/(number of atoms of gallium+number of atoms of zinc)) being from about 1.0 to about 1.6, is disclosed. An electrophotographic photoreceptor including a layer which includes the oxide material is also disclosed. An electrophotographic photoreceptor including a substrate; and a photosensitive layer including gallium, oxygen and zinc is also disclosed.

Abstract: Disclosed is an electrophotographic photoreceptor including: an electroconductive substrate; a photosensitive layer arranged on or above the electroconductive substrate; and a surface layer arranged on or above the photosensitive layer, and containing about 90% or more by atom of gallium (Ga), oxygen (O) and hydrogen (H), and having an atomic number density of about 7.8×1022 cm?3 or more.

Abstract: Disclosed is a multiband planar antenna including: an insulating film, a first antenna section and a second antenna section facing to the first antenna section across a feeding point on a film, wherein the first antenna section includes: a first antenna element including a side having a length in an extending direction corresponds to a first resonance frequency; a shorter second antenna element at a predetermined distance from and in parallel with the first antenna element; and a first coupling section to couple the first and second antenna elements, wherein a length in the extending direction of a first clearance corresponds to a resonance frequency higher than the first resonance frequency, and wherein the second antenna section includes: third and fourth antenna elements; a second coupling section; and a second clearance similar to the above.

Abstract: An electrophotographic photoconductor includes a base, a photosensitive layer formed on the base, and an overcoat layer formed on the photosensitive layer, wherein the overcoat layer includes gallium, oxygen, and hydrogen, and the intensity ratio (IO-H/IGa-O) of a signal IO-H of an O—H bond to a signal IGa-O of a Ga—O bond in an infrared absorption spectrum is about 0.1 or more and 0.5 or less.

Abstract: The multifrequency antenna comprises a substrate, antenna elements, shunt inductor conductors, series capacitor conductors, series inductor conductors, a connection point, and input/output terminals. The antenna elements are provided on the substrate and electrically connected to the connection point via the shunt inductor conductors. The antenna elements form capacitors together with the parts facing the series capacitor conductors and are electrically connected to the input/output terminals via these capacitors and series inductor conductors.

Abstract: An electrophotographic photoreceptor includes an electrically conductive substrate, an organic photosensitive layer and a surface layer laminated in this order. The surface layer includes at least gallium (Ga) and oxygen (O) as constituent elements thereof, and has a thickness of 0.2 ?m to 1.5 ?m, and a microhardness of 2 GPa to 15 GPa.

Abstract: Disclosed is an antenna with a built-in filter, the antenna being implemented in an electronic device, comprising: an antenna element; and a circuit board unit connected to the antenna element, wherein the circuit board unit includes: a filter circuit that filters input and output signals of the antenna element; and a matching circuit that performs impedance matching of the antenna element.

Abstract: Disclosed is a planar antenna, including: a film formed of a planar insulating material; an antenna portion which is a planar conductor on the film; and a ground portion which is a conductor to be grounded, wherein the antenna portion comprises: at least one first short stub; a first antenna element which is connected to the ground portion through the at least one first short stub and whose shape has such an angle that a distance between the first antenna element and the ground portion increases with increasing distance from a feeding point along the ground portion, the feeding point being provided between the first antenna element and the ground portion; a second short stub; and a second antenna element which is connected to the first antenna element through the second short stub.