摘要:
A communication device for a vehicle in which an RF device in the room mirror is connected electrically to a radiator included in a shade band is disclosed. The communication device for a vehicle includes an RF device in a room mirror and a radiator disposed in a shade band and connected electrically to the RF device.
摘要:
A communication device for a vehicle in which an RF device in the room mirror is connected electrically to a radiator included in a shade band is disclosed. The communication device for a vehicle includes an RF de vice in a room mirror and a radiator disposed in a shade band and connected electrically to the RF device.
摘要:
An antenna for a vehicle for enabling to design freely and enhance characteristics of the antenna such as isolation, etc. is disclosed. The antenna includes a substrate and a case configured to cover the substrate. Here, one or more radiator is disposed on an outer surface of the case, and a power is fed to the radiator from the substrate.
摘要:
Disclosed is a wide-band internal antenna that uses a slow-wave structure. The antenna includes an impedance matching/power feed part, which includes a first conductive element that extends from a power feed line and a second conductive element that is separated by a particular distance from the first conductive element and is electrically connected with a ground, and at least one radiator extending from the impedance matching/power feed part. Here, the first conductive element and the second conductive element of the impedance matching/power feed part form a slow-wave structure. By applying a slow-wave structure to coupling matching, the antenna provides the advantage of resolving the problem of narrow band characteristics found in inverted-F antennas while maintaining a low profile.
摘要:
A broadband antenna is disclosed. The disclosed antenna may include: a substrate; an impedance matching/feeding unit, arranged on the substrate and comprising a first matching member and a second matching member configured to perform impedance matching through a coupling method; a radiating member electrically connected to the impedance matching/feeding unit; and a signal line electrically connected to the second matching member. Here, the signal line is implemented in the form of an electrical loop.
摘要:
An internal antenna providing impedance matching for a wide band is disclosed. The disclosed antenna may include: a substrate; an impedance matching/feeding unit comprising a feeding member, separated from the substrate at a designated distance, configured to receive RF signals, and of a designated length in a first direction, and a ground member, separated from the substrate at a designated distance, separated from the feeding member at a designated in a second direction perpendicular to the first direction, and of a designated length in the first direction; and a radiator extending from the ground member; wherein the impedance matching/feeding unit performs impedance matching by way of coupling between the feeding member and the ground member, and the radiator receives coupling feeding from the feeding member. The disclosed antenna has the advantages of overcoming the narrow band problem of a planar inverted-F antenna, and of allowing more efficient utilization of space in an internal antenna.
摘要:
An antenna, where an end point of a radiator is shorted, using coupling matching is disclosed. The antenna includes a first conductive element connected electrically to a first ground, a second conductive element connected electrically to a feeding part, and spaced from the first conductive element by a certain distance, a third conductive element extending from the first conductive element and configured to output a RF signal, an end point of the third conductive element being coupled to a second ground. Here, the first conductive element and the second conductive element have a certain length so that a travelling wave is generated and enough coupling is provided. The antenna provides wide band characteristics while maintaining a low profile structure. The frequency characteristics of the antenna are not changed significantly due to external factors such as hand effect and head effect.
摘要:
Disclosed is an internal antenna providing impedance matching for a wide band where a feeding patch is placed on a substrate. The disclosed antenna may include: a substrate; an impedance matching/feeding unit including a feeding patch, which is formed on the substrate and electrically connected to a feeding point, and a ground patch, which is electrically connected to a ground and formed above the feeding patch separated at a designated distance from the feeding patch; and a radiator formed extending from the ground patch, where the impedance matching/feeding unit performs impedance matching by way of coupling between the feeding patch and the ground patch, and the radiator receives coupling feeding from the feeding patch. The disclosed antenna has the advantages of overcoming the narrow band problem of a planar inverted-F antenna, and of allowing more efficient utilization of space in an internal antenna for a wide band using coupling matching and coupling feeding.
摘要:
A multi-band built-in antenna for a mobile communication terminal having a main board and a casing for protecting the main board, is disclosed. A transmission line is formed to be spaced apart from one outside surface of the main board by a predetermined interval and configured to include an external conductor, a dielectric, and a central conductor so as to transmit signals. A ground clip is configured to ground the transmission line by fastening the transmission line. A radiator is formed by bending the dielectric and central conductor of the transmission line, other than the external conductor of the transmission line, and is configured to operate in multiple bands. An open stub is connected to the ground clip, is bent a plurality of times, and is configured to be operated in a low frequency band, which is lower than the high frequency band.
摘要:
A multi band internal antenna is disclosed. The antenna may include a board, an impedance matching/feeding part formed on the board, and a first radiation element joined to the impedance matching/feeding part, where the impedance matching/feeding part may include: a first matching element of a particular length that is coupled to a ground, and a second matching element of a particular length that is arranged with a distance from the first matching element and is electrically coupled to a feeding point, and where the distance between the first matching element and the second matching element may vary partially. Thus, a multi band internal antenna can be provided that utilizes coupling matching to achieve wide-band characteristics even for multi-band designs.