Abstract: According to an embodiment, a multi-layer antenna structure comprises a printed circuit board including an IC for processing an RF signal, a feeding line connected to the IC, and a feeding pad connected to the feeding line, a conductive lower layer tightly contacting the printed circuit board and including a feeding hole in an area connected with the feeding pad and vertically open and a waveguide connected to the feeding hole and disposed on an upper surface thereof, and a conductive upper layer tightly contacting the conductive lower layer and including an antenna slot pattern in an area corresponding to the waveguide and vertically open. The waveguide may include a bottom surface positioned lower than an upper surface thereof, a side surface extending from each of two opposite ends of the bottom surface to the upper surface, and a protrusion protruding upward from a center portion of the bottom surface.

Abstract: According to an embodiment, an antenna structure comprises a printed circuit board including an integrated circuit processing a radio frequency (RF) signal, a feeding line connected to the integrated circuit, and a feeding pad connected to the feeding line to transfer the RF signal and a conductive upper layer including an antenna slot pattern connected with the feeding pad through a waveguide and vertically opened to radiate or receive the RF signal. The conductive upper layer further includes an adjacent slot pattern around the antenna slot pattern.

Abstract: According to an embodiment, a multi-layer antenna structure comprises a printed circuit board including an IC for processing an RF signal, a feeding line connected to the IC, and a feeding pad connected to the feeding line, a conductive lower layer tightly contacting the printed circuit board and including a feeding hole in an area connected with the feeding pad and vertically open and a waveguide connected to the feeding hole and disposed on an upper surface thereof, and a conductive upper layer tightly contacting the conductive lower layer and including an antenna slot pattern in an area corresponding to the waveguide and vertically open. The waveguide may include a bottom surface positioned lower than an upper surface thereof, a side surface extending from each of two opposite ends of the bottom surface to the upper surface, and a protrusion protruding upward from a center portion of the bottom surface.

Abstract: 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.

Abstract: A pole-type vehicle antenna is provided that is mounted to a vehicle for the purpose of mobile services. In the vehicle antenna, a new type antenna for mobile services that substitutes for an antenna pole in a breakdown of the antenna pole is implemented by providing a thin film type preliminary antenna that performs antenna functions for mobile services inside an antenna case. Therefore, when the antenna is broken, a driver does not feel inconvenient in using mobile services.

Abstract: A pole-type vehicle antenna is provided that is mounted to a vehicle for the purpose of mobile services. In the vehicle antenna, a new type antenna for mobile services that substitutes for an antenna pole in a breakdown of the antenna pole is implemented by providing a fastening type preliminary antenna that performs antenna functions for mobile services inside an antenna case. Therefore, when the antenna is broken, a driver does not feel inconvenient in using mobile services.

Abstract: An antenna device for a vehicle includes an antenna case, a main antenna and a preliminary antenna. The antenna case has a board disposed therein. The main antenna is connected to the board through a connector of the antenna case. The preliminary antenna is disposed inside the antenna case and connected to the board. The preliminary antenna is configured to perform a function of transmitting and receiving frequency signals.

Abstract: A patch antenna is disclosed. The disclosed patch antenna may include: a first radiator configured to generate a circular polarized wave; a first dielectric substrate equipped under the first radiator; a second radiator, placed under the first radiator at a designated distance from the first radiator, and configured to generate a linear polarized wave; a second dielectric substrate equipped under the second radiator; and a reflecting plate equipped under the second radiator at a designated distance from the second radiator; where the first dielectric substrate, the second radiator, the second dielectric substrate, and the reflecting plate are connected through at least one via. A patch antenna according to the present invention has the advantages of being able to generate linear polarized waves and circular polarized waves simultaneously, and of having a small size while still having a high design frequency band.

Abstract: A patch antenna synchronously generating a circularly polarized wave and a linearly polarized wave comprises a first radiator radiating a circularly polarized wave with respect to an antenna signal, a first substrate provided at a part or the whole of the rear surface of the first radiator, a second radiator provided at a part or the whole of the rear surface of the first substrate and radiating a linearly polarized wave with respect to the antenna signal, and a second substrate provided at a part or the whole of the rear surface of the second radiator.

Abstract: The present invention relates to a technology for forming a patch antenna generating both linearly and circularly polarized waves at the same time, so as to reduce a propagation loss during transmission/receiving operations between a circularly polarized antenna and a linearly polarized antenna.

Abstract: 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.

Abstract: A patch antenna synchronously generating a circularly polarized wave and a linearly polarized wave comprises a first radiator radiating a circularly polarized wave with respect to an antenna signal, a first substrate provided at a part or the whole of the rear surface of the first radiator, a second radiator provided at a part or the whole of the rear surface of the first substrate and radiating a linearly polarized wave with respect to the antenna signal, and a second substrate provided at a part or the whole of the rear surface of the second radiator.

Abstract: A patch antenna is disclosed. The disclosed patch antenna may include: a first radiator configured to generate a circular polarized wave; a first dielectric substrate equipped under the first radiator; a second radiator, placed under the first radiator at a designated distance from the first radiator, and configured to generate a linear polarized wave; a second dielectric substrate equipped under the second radiator; and a reflecting plate equipped under the second radiator at a designated distance from the second radiator; where the first dielectric substrate, the second radiator, the second dielectric substrate, and the reflecting plate are connected through at least one via. A patch antenna according to the present invention has the advantages of being able to generate linear polarized waves and circular polarized waves simultaneously, and of having a small size while still having a high design frequency band.

Abstract: 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.

Abstract: The present invention relates to a technology for forming a patch antenna generating both linearly and circularly polarized waves at the same time, so as to reduce a propagation loss during transmission/receiving operations between a circularly polarized antenna and a linearly polarized antenna.