41results about How to "Wide directivity" patented technology

A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

A bending wave loudspeaker having an operating frequency range and a coincidence frequency which is above the operating frequency range, comprising a resonant panel having two generally orthogonal axes, vibration exciting means coupled to the panel to excite the panel into resonance along the one axis of the panel, and means restraining or preventing resonance along the other axis of the panel whereby the panel radiates an acoustic output which is of wide directivity along the one axis and of narrow directivity along the other axis of the panel.

A first metal plate for transmission and a second metal plate for transmission are closely-attached to a first surface and a second surface of a dielectric body, respectively. An outer edge of the first metal plate substantially symmetrically faces an outer edge of the second metal plate via the dielectric body. A metal plate for matching is arranged inside a hole formed on the second metal plate, with a slit formed with an inner wall of the hole, and is fixed to the dielectric body. The metal plate for matching is electrically connected to the first metal plate via a through hole penetrating the dielectric body. An IC chip is surface-mounted to connect the second metal plate with the metal plate for matching.

A first directivity parameter to provide a narrow directivity and a second directivity parameter to provide a wide directivity are preset for a directivity control apparatus to control the directivity of an array loudspeaker system. The directivity control apparatus selects either the first directivity parameter or the second directivity parameter in accordance with an instruction that is entered through an operating unit to select the directional characteristic of a loudspeaker array. Then, based on the selected directivity parameter, the directivity control apparatus generates delay control information, to be supplied to a delay circuit, and generates gain control information, to be supplied to a weighting unit.

A speaker device having a simple structure and exhibiting a wide directivity and an excellent frequency characteristic. A directivity adjustment panel covering a part of the vibration region of a diaphragm of a speaker unit is disposed at a distance from the edge portion of the periphery of the diaphragm and reflects the sound wave received from the diaphragm toward the direction of the diaphragm.

An antenna device includes a communication module and a loop-shaped conductor. The communication module has a substrate on which an approximately rectangular ground conductor is formed. A non-ground region is provided along one side of the ground conductor. A transmission line and a radiation element are formed in the non-ground region. Further, a capacitance element is connected to the radiation element, and the transmission line is connected to a feeding point of the radiation element. The loop-shaped conductor includes in part a gap that is positioned near the radiation element. With this, an antenna device to be provided in an electronic apparatus having wide directivity in a state of being attached to a garment, a person's body, or the like, and the stated electronic apparatus are configured.

An electroacoustic transducer includes a diaphragm including a pair of convex surfaces respectively including convex surfaces of a pair of longitudinal split tubular members. A valley is formed between one side portions of the pair of longitudinal split tubular members. The electroacoustic transducer further includes: a converter configured to convert between a vibration of the diaphragm in a depth direction of the valley and an electric signal corresponding to the vibration; and a supporter supporting other side portions of the pair of longitudinal split tubular members of the diaphragm so as to allow the other side portions to vibrate in a vibration direction of the vibration.

A radome capable of increasing directivity in the vertical direction, an antenna device including the radome, and a radar device including the antenna device are realized. A radome (10) includes an outer wall (11) having a semicircular side section, and an inner wall (12) disposed inside the outer wall. The inner wall is composed of a first inner wall (211) and a second inner wall (212). When the first inner wall is viewed from the side, it is from the midpoint (Pc) on the circumference of the outer wall to the distance between the midpoint (Pc) and the two ends (Pe). In the range of predetermined positions between them, they are arranged with a fixed minimum distance (dc) from the outer wall. The second inner wall is formed of a flat plate having one end connected to the end of the first inner wall and having a plane parallel to a straight line connecting the midpoint (Pc) and the center (Po). Accordingly, the shortest distance (de) between the outer wall and the inner wall near the end (Pe) of the outer wall is wider than the shortest distance (dc) between the outer wall and the inner wall near the midpoint (Pc) of the outer wall.

An antenna module includes a first coil conductor, a second coil conductor and a magnetic layer. The first coil conductor and the second coil conductor are arranged with a magnetic layer interposed therebetween so that a coil aperture of the first coil conductor and a coil aperture of the second coil conductor are opposed to each other in alignment. An inner end portion of the first coil conductor and an inner end portion of the second coil conductor are electrically connected. The first coil conductor and the second coil conductor are connected to each other so that directions of magnetic fluxes generated in coil-wound axis directions of the first coil conductor and the second conductor are mutually opposite to each other. A magnetic flux φ entering a metal body in a perpendicular direction thereto flows in a lateral direction of the magnetic layer.

An antenna includes a magnetic current element which is an element to constitute a loop and generates a magnetic current vector having a component perpendicular to a loop plane, and an electric current element to generate an electric current vector having a component parallel to the magnetic current vector.