Abstract: A radar antenna is disclosed. The disclosed antenna includes: a dielectric substrate; a feed line for feeding RF signals that is formed on an upper portion of the dielectric substrate and has a linear form; a multiple number of radiators that are perpendicularly joined to the feed line and have a bent structure comprising a horizontal portion and a vertical portion; a matching element for adjusting impedance matching that is joined to an end of the feed line; and a ground formed on a lower portion of the dielectric substrate, where a length of the horizontal portion and the vertical portion is set based on a polarization angle of an RF signal that is to be radiated. The disclosed antenna can be manufactured with a simple structure and a compact size.

Abstract: A radar antenna is disclosed. The disclosed antenna includes: a dielectric substrate; a feed line for feeding RF signals that is formed on an upper portion of the dielectric substrate and has a linear form; a multiple number of radiators that are perpendicularly joined to the feed line and have a bent structure comprising a horizontal portion and a vertical portion; a matching element for adjusting impedance matching that is joined to an end of the feed line; and a ground formed on a lower portion of the dielectric substrate, where a length of the horizontal portion and the vertical portion is set based on a polarization angle of an RF signal that is to be radiated. The disclosed antenna can be manufactured with a simple structure and a compact size.

Abstract: Disclosed is a radar array antenna. The radar array antenna includes: at least one main power feed line electrically coupled to a feed point; a plurality of branch lines branched from the main feed line; and a plurality of patch radiators, each having a square shape, and respectively coupled to the plurality of branch lines. Each of the plurality of branch lines is coupled to one edge of each of the patch radiators. According to the disclosed radar array antenna, the power feed line of the radar array antenna may be minimized in size by using the patch radiator to reduce power losses and realize miniaturization.

Abstract: An adaptor for connecting a microstrip line and a waveguide is disclosed that includes a microstrip line part and a waveguide part. The microstrip line part includes a microstrip port pattern and a patch pattern on an upper portion of a substrate, where the patch pattern is joined to an end portion of the microstrip port pattern. The waveguide part includes a waveguide hole, for transferring a signal provided from the patch pattern; a channel hole, which is formed in an area for joining with the microstrip line part, is formed along a first direction orthogonal to a direction of the waveguide hole in correspondence to the microstrip port pattern, and is connected with the waveguide hole; and a stub hole, which is connected with the waveguide hole and is formed in an area for joining with the microstrip line part along a second direction opposite to the first direction.

Abstract: Disclosed is a radar array antenna. The radar array antenna includes: at least one main power feed line electrically coupled to a feed point; a plurality of branch lines branched from the main feed line; and a plurality of patch radiators, each having a square shape, and respectively coupled to the plurality of branch lines. Each of the plurality of branch lines is coupled to one edge of each of the patch radiators. According to the disclosed radar array antenna, the power feed line of the radar array antenna may be minimized in size by using the patch radiator to reduce power losses and realize miniaturization.

Abstract: An adaptor for connecting a microstrip line and a waveguide is disclosed that includes a microstrip line part and a waveguide part. The microstrip line part includes a microstrip port pattern and a patch pattern on an upper portion of a substrate, where the patch pattern is joined to an end portion of the microstrip port pattern. The waveguide part includes a waveguide hole, for transferring a signal provided from the patch pattern; a channel hole, which is formed in an area for joining with the microstrip line part, is formed along a first direction orthogonal to a direction of the waveguide hole in correspondence to the microstrip port pattern, and is connected with the waveguide hole; and a stub hole, which is connected with the waveguide hole and is formed in an area for joining with the microstrip line part along a second direction opposite to the first direction.

Abstract: A radar array antenna using open stubs is disclosed. The disclosed antenna includes: a dielectric substrate; a feed line for feeding RF signals that is formed on an upper portion of the dielectric substrate and has a linear form; a multiple number of open stubs that extend at particular angles from the feed line and have linear forms with particular widths; a matching element for adjusting impedance matching that is joined to an end of the feed line; and a ground formed on a lower portion of the dielectric substrate, where the open stubs operate as radiators, and at least one of the open stubs has a different length for adjusting a radiation signal intensity of each open stub. The disclosed antenna can be manufactured with a simple structure and a compact size.

Abstract: A radar antenna is disclosed. The disclosed antenna includes: a dielectric substrate; a feed line for feeding RF signals that is formed on an upper portion of the dielectric substrate and has a linear form; a multiple number of radiators that are perpendicularly joined to the feed line and have a bent structure comprising a horizontal portion and a vertical portion; a matching element for adjusting impedance matching that is joined to an end of the feed line; and a ground formed on a lower portion of the dielectric substrate, where a length of the horizontal portion and the vertical portion is set based on a polarization angle of an RF signal that is to be radiated. The disclosed antenna can be manufactured with a simple structure and a compact size.