摘要:
An antenna apparatus according to the invention comprises an inverse F-element provided on a grounding conductor. The inverse F-element is constituted by an L-shaped radiating conductor and a short-circuiting conductor. The radiating conductor is constituted by a vertical portion vertically extending from a feeding point provided maintaining a gap with respect to the grounding conductor, and a horizontal portion extending in parallel with the grounding conductor from an upper end of the vertical portion. The vertical portion of the radiating conductor is of a meandering shape.
摘要:
A protector-equipped antenna unit has an antenna body including an antenna case, a cable derived from the antenna case to the outside, and a protector for protecting the antenna body and the cable. The protector has drain holes. The protector has a cable protecting portion having a hook portion for fixing the cable.
摘要:
In a planar antenna including a board having an upper surface on which a planar antenna element pattern is formed, a probe for feeding to the planar antenna element pattern by electromagnetic coupling, a ground plate, and a base having a groove for disposing the probe therein, the planar antenna has a fastening member for fastening the board to the ground plate with the base sandwiched therebetween. The fastening member has a case, disposed on the upper surface of the board, having four bosses which extend downwards and which have four screw holes and four screws threaded to the four screw holes from the ground plate side.
摘要:
An antenna apparatus according to the invention comprises an inverse F-element provided on a grounding conductor. The inverse F-element is constituted by an L-shaped radiating conductor and a short-circuiting conductor. The radiating conductor is constituted by a vertical portion vertically extending from a feeding point provided maintaining a gap with respect to the grounding conductor, and a horizontal portion extending in parallel with the grounding conductor from an upper end of the vertical portion. The vertical portion of the radiating conductor is of a meandering shape.
摘要:
In addition to an FM reception antenna element for receiving an FM radio wave and an FM receiver connected to the FM reception antenna element, a mobile object is provided with a first antenna element for receiving a satellite signal, a signal processing unit connected to the first antenna, and a second antenna element connected to the signal processing unit. The signal processing unit processes the satellite signal into an FM signal. The second antenna element emits the FM signal as the FM radio wave that may be received in the FM reception antenna and processed by the FM receiver in the manner known in the art.
摘要:
In an antenna unit including a patch antenna, the antenna unit is provided with a non-feeding conductor wall so as to enclose the patch antenna. The conductor wall is, for example, made of metal. The conductor wall has a square main conductor plate apart from a bottom surface of the patch antenna, four side plates extending upward from four sides of the main conductor plate, and four trapezoidal tongue pieces extending inward from upper ends of the four side plates in parallel with the main conductor plate.
摘要:
The structure of an antenna device is simplified to reduce the size and cost. In an antenna case having a top cover and a bottom plate joined with each other, an antenna module receiving a signal transmitted from a GPS satellite, a low noise amplifier circuit (LNA circuit) directly provided on the ground plane of the antenna module for amplifying the signal received by the antenna module, and a shield case that shields the LNA circuit are provided.
摘要:
An antenna device suitably provided in a vehicle is provided with low cost. A receiving module is fixed in the internal space formed by a pair of case parts. The receiving module includes a dielectric substrate, an antenna element provided on one main surface of the dielectric substrate, a ground plate provided on the other main surface of the dielectric substrate, and a circuit board provided on the backside of the main surface having the dielectric substrate at the ground plate, and a shield case that shields the circuit board. The ground plate has an extension extending parallel to the antenna element from the outer peripheries of said dielectric substrate and the circuit board, and the extension is supported in the pair of the case parts, so that the receiving module is fixed in the internal space of the pair of case parts.
摘要:
In a helical antenna having an antenna pattern of a helical shape, the antenna pattern extends along a cylindrical body formed by an insulating film member which is rolled into a cylindrical shape. A circuit board is placed opposite to one of axial ends of the cylindrical body. The circuit board is formed with a circuit pattern connected to the antenna pattern by soldering. The cylindrical body has a specific part which is not provided with the antenna pattern and is fixed to the circuit board.