Abstract:
A multi-band shark fin antenna for a vehicle comprises: a base; a substrate coupled to an upper portion of the base and on which feed lines are formed; and a first antenna frame coupled on the substrate and to which a plurality of radiators are coupled, wherein the first antenna frame comprises: a first radiator coupling part to which a first radiator is coupled; and a first support extending from the first radiator coupling part and supporting the first radiator coupling part, wherein an antenna coil is coupled to an outer circumferential surface of the first support, and the antenna coil is electrically connected to the first radiator.
Abstract:
A multi-band base station antenna comprises: a reflector; a plurality of high-band radiators arranged on the reflector; and a plurality of low-band radiators arranged on the reflector. Each of the plurality of low-band radiators comprises: a radiation substrate; a first dipole radiator including a first + dipole arm and a first − dipole arm formed on the radiation substrate; a second dipole radiator including a second + dipole arm and a second − dipole arm formed on the radiation substrate; and a metal coupler coupled to the lower portion of the radiation substrate. The metal coupler comprises: a first coupling patch located below the first + dipole arm; a second coupling patch located below the first − dipole arm; a third coupling patch located below the second + dipole arm; and a fourth coupling patch located below the second − dipole arm.
Abstract:
FIG. 1 is a front perspective view of an antenna showing my new design; FIG. 2 is a front elevational view thereof; FIG. 3 is a rear elevational view thereof; FIG. 4 is a left side elevational view thereof; FIG. 5 is a right side elevational view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; and, FIG. 8 is a rear perspective view thereof.
Abstract:
A vehicle antenna mounting system, including an antenna circuit board, an antenna base supporting the antenna circuit board, an antenna cover covering the antenna circuit board, and a temporary mounting member temporarily mounting the antenna base on a roof of a vehicle body. The antenna base has a mounting projection protruding downwardly from a bottom surface of the antenna base and a cavity defined in the mounting projection. The temporary mounting member is received in the cavity and the roof has a hole into which the temporary mounting member is inserted.
Abstract:
A roof antenna may include an upper case formed to be opened at a lower portion thereof and including a plurality of fusion bosses and a plurality of hooks at the lower portion, a lower case coupled to the plurality of fusion bosses and the plurality of hooks to shield the opened lower portion of the upper case and configured to be coupled to a roof of a vehicle, and a rubber pad mounted to a lower portion of the lower case to prevent exposure to the outside by the upper case and provided so that the lower case is configured to be water-tightly coupled to the roof of the vehicle.
Abstract:
A triple-mode dielectric resonator filter includes: a dielectric resonator positioned in a cavity of a housing and formed perpendicular to a longitudinal direction of the housing; a dielectric support coupled to the dielectric resonator through a bonding process and mounted and fixed by a fixing screw passing through a screw fixing mounting hole in the cavity of the housing and fixed to support the dielectric resonator at a predetermined height; and compensation blocks formed to protrude at regular intervals on a side surface of the dielectric resonator to allow the dielectric resonator to operate in three modes. A band pass filter composed of a dielectric resonator and an NRN stub achieves an improved insertion loss, high compression properties and a stable structure compared to a typical band pass filter using an NRN stub.
Abstract:
A cavity filter for low PIMD using hybrid cap bolts includes: a housing having therein a plurality of cavities partitioned by separation walls and an open upper portion; an upper plate coupled onto the upper portion of the housing and provided therein with a plurality of tuning bolts; a plurality of air blowing work holes formed respectively on the upper plate and outer sidewalls of the housing and corresponding to the plurality of cavities; and a plurality of hybrid cap bolts formed of different kinds of materials of metal and non-metal so as to have repulsive forces against and to be coupled to respective plurality of air blowing work holes. Thus, metal debris present inside a cavity housing are removed through an air blowing method by using an air blowing work hole formed in a cavity housing and a hybrid cap bolt for reducing PIMD.
Abstract:
A radiator for a base station antenna is disclosed. The disclosed radiator includes a feed part and a multiple number of radiation elements configured to receive feed signals provided from the feed part, where each of the radiation elements comprises a first conductive part, which is fed with a + signal from the feed part, and a second conductive part, which is fed with a − signal from the feed part, and where a first expanding part that gradually increases in horizontal width along a direction of increasing distance from the first conductive part is joined to an end of the first conductive part, and a second expanding part that gradually increases in horizontal width along a direction of increasing distance from the second conductive part is joined to an end of the second conductive part.
Abstract:
A multi-mode filter for realizing wide-band is disclosed. The multi-mode filter includes a housing; a plurality of cavities formed in the housing; a plurality of resonators located in each of the cavities; at least one connector formed through a side wall of the housing; and at least one coupling element connected to the at least one connector in the cavities, the at least one coupling element coupling the at least one connector with at least one of the resonators respectively, wherein each of the at least one coupling element has “T” shape in view of front section and “L” shape in view of side section.
Abstract:
A feeding system for providing a power using metal patterns having ‘U’ shape is disclosed. A phase shifter as the feeding system includes a first substrate, a first pattern as a conductor disposed on the first substrate, a second substrate separated from the first substrate and a second pattern as a conductor disposed on the second substrate. Here, the first pattern is overlapped with the second pattern, and electrical length of overlapped part of the patterns changes in case of changing phase of an RF signal outputted from the phase shifter.