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.
摘要:
A helical antenna includes a hollow cylindrical member having an inner peripheral surface and an outer peripheral surface, an antenna pattern film wound around the outer peripheral surface of the hollow cylindrical member, a center rod coaxial with a center axis of the hollow cylindrical member, and at least three ribs disposed between the center rod and the inner peripheral surface of the hollow cylindrical member. The ribs symmetrically extend in a radial manner at equal angular intervals. The hollow cylindrical member, the center rod, and the ribs preferably may be integrally molded out of plastic. The antenna pattern film may include a flexible insulator film and a conductive pattern formed on the flexible insulator film. The conductive pattern has at least one antenna lead member which is wound around the outer peripheral surface of the hollow cylindrical member in a helix fashion.
摘要:
In an antenna apparatus, a first antenna and a second antenna for receiving radio waves different from each other are mounted to a single case or a single substrate. The first and the second antennas are connected through a common cable to a receiver body. The first antenna is a helical antenna and comprises an insulating cylindrical bobbin, a plurality of wires helically wound around the insulating cylindrical bobbin, and a ring-shaped insulating wire holder for fixing the wires to the insulating cylindrical bobbin. The second antenna is a monopole antenna and can be arranged inside the insulating cylindrical bobbin. The insulating cylindrical bobbin comprises a hollow center member having a center axis coincident with a center axis thereof so that the center axis of the monopole antenna is coincident with that of the helical antenna, and a rib supporting the hollow cylindrical member. The antenna apparatus has a top cover covering the antennas and provided with a protrusion for inhibiting the rotation of the ring-shaped insulating wire holder.
摘要:
A composite antenna apparatus is disclosed. A rod member accommodates a first antenna element and a second antenna element therein. A base member accommodates a circuit board therein. A connector couples an end portion of the rod member and the base member. The connector includes a first conductive member configured to transmit a first signal received by the first antenna element to the circuit board therethrough, and a second conductive member configured to transmit a second signal received by the second antenna element to the circuit board therethrough.
摘要:
An antenna apparatus is disclosed. A circuit board has a first face, a second face opposite to the first face, and an edge formed with a notch connecting the first face and the second face. A circuit is arranged on the first face. An antenna element is configured to receive radio waves. A connecting member includes a first part coupled to the antenna element at a position opposing the second face and a second part fitted with the notch and elastically connected to the circuit.