This disclosure provides an antenna device that includes an electromagnetic wave radiation source for radiating an electromagnetic wave, and an electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, where a plurality of slot array rows each including a pl
This disclosure provides an antenna device that includes an electromagnetic wave radiation source for radiating an electromagnetic wave, and an electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, where a plurality of slot array rows each including a plurality of slots arranged in the horizontal direction are arranged in the vertical direction.
대표청구항▼
1. An antenna device, comprising: a plane dipole antenna for radiating an electromagnetic wave, the plane dipole antenna being arranged in a first direction and configured such that the radiated electromagnetic wave has its center axis substantially in a plane extending in the first direction;an ele
1. An antenna device, comprising: a plane dipole antenna for radiating an electromagnetic wave, the plane dipole antenna being arranged in a first direction and configured such that the radiated electromagnetic wave has its center axis substantially in a plane extending in the first direction;an electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, the electromagnetic wave shaping module extending in the first direction; anda plurality of slot array rows, each slot array row including a plurality of slots arranged in the first direction, and the slot array rows being arranged in a second direction, the second direction being perpendicular to the first direction;the electromagnetic wave shaping module including at least a pair of the slot array rows arranged at positions mutually symmetrical in the second direction with respect to a plane extending in the first direction, said plane including the center axis;where each slot in a topmost slot array row, and each slot in a bottom-most slot array row, is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source. 2. The antenna device of claim 1, wherein the slot arrays include an odd number of rows. 3. The antenna device of claim 2, wherein a center slot array row located at a center position in the second direction among the slot arrays is provided in a plane parallel to the radiating direction of the electromagnetic wave. 4. The antenna device of claim 3, wherein a distance between the electromagnetic wave radiation source and the center slot array row is substantially 0.3 wavelength of a wavelength of the electromagnetic wave, and a distance between the electromagnetic wave radiation source and the pair of the slot array rows is substantially 0.8 wavelength of the wavelength of the electromagnetic wave. 5. The antenna device of claim 2, wherein each slot of the slot array located at a center position in the second direction has a bow-tie shape. 6. The antenna device of claim 1, wherein the electromagnetic wave shaping module includes: a slot plate formed with the slot array rows and oriented perpendicular to the dipole antenna; anda cover part coupled to an upper part and a lower part of the slot plate and for covering above and below the plane dipole antenna. 7. The antenna device of claim 1, wherein the electromagnetic wave shaping module has a protruding shape in a cross-section and has a plane perpendicular to the protruding direction on the opposite side from the protruding direction, and the slot array rows extend substantially in the first direction in the plane perpendicular to the protruding direction; and wherein the plane dipole antenna is arranged inside the electromagnetic wave shaping module. 8. The antenna device of claim 1, where the electromagnetic wave shaping module includes: a front plate extending in the first direction and facing in a direction of electromagnetic wave radiation;an upper front plate extending in the first direction, arranged at a right angle to the front plate, and facing perpendicular to the front plate; anda lower front plate extending in the first direction, arranged at a right angle to the front plate, and facing in a direction directly opposite to the upper front plate;the front plate having p said plurality of slot array rows disposed thereon,each slot having a length and a width, the length being greater than the width and the length extending in the second direction;where a first slot array row from among said plurality is disposed along an edge of said front plate such that each slot included in the first slot array row extends length-wise past the edge of the front plate and onto the upper front plate. 9. The antenna device of claim 1, where the first direction is a horizontal direction and the second direction is a vertical direction. 10. The antenna device of claim 1, where each slot in a topmost slot array row, and each slot in a bottom-most array row is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source such that the extracted radiated electromagnetic wave has directivity in the first direction and is radiated in a third direction that is perpendicular to the first and second directions. 11. An antenna device, comprising: a patch antenna for radiating an electromagnetic wave, the patch antenna being arranged in a first direction and configured such that the radiated electromagnetic wave has its center axis substantially in a plane extending in the first direction; an electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, the electromagnetic wave shaping module extending in the first direction; anda plurality of slot array rows, each slot array row including a plurality of slots arranged in the first direction, and the slot array rows being arranged in a second direction, the second direction being perpendicular to the first direction;the electromagnetic wave shaping module including at least a pair of the slot array rows arranged at positions mutually symmetrical in the second direction with respect to a plane extending in the first direction, said plane including the center axis;where each slot in a topmost slot array row, and each slot in a bottom-most slot array row, is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source. 12. The antenna device of claim 11, the plurality of slot array rows are arranged such that each slot of one slot array row is located at a center position in the first direction between corresponding two slots of another slot array or other slot array rows adjacent to the one slot array row in the second direction, respectively. 13. The antenna device of claim 11, wherein at least the pair of the slot array rows are provided outside of a width of the electromagnetic wave radiation source in the first direction. 14. The antenna device of claim 11, wherein an aperture surface of the electromagnetic wave radiation source in the first direction is larger than a perpendicular aperture surface thereof. 15. The antenna device of claim 11, wherein the electromagnetic wave shaping module includes: a slot plate formed with the slot array rows and oriented perpendicular to the patch antenna; anda cover part coupled to an upper part and a lower part of the slot plate and for covering above and below of the patch antenna. 16. The antenna device of claim 11, wherein the electromagnetic wave shaping module has a protruding shape in a cross-section and has a plane perpendicular to the protruding direction on the opposite side from the protruding direction, and the slot array rows extend substantially in the first direction in the plane perpendicular to the protruding direction; and wherein the patch antenna is arranged inside the electromagnetic wave shaping module. 17. The antenna device of claim 11, wherein the electromagnetic wave radiation source is a waveguide where its tube axis is oriented in the first direction and a plurality of source slots of the electromagnetic wave radiation are formed toward the front. 18. The antenna device of claim 11, wherein a distance between the electromagnetic wave radiation source and the slot is substantially 0.3 wavelength or more of a wavelength of the electromagnetic wave. 19. The antenna device of claim 11, where each slot in a topmost slot array row, and each slot in a bottom-most array row is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source such that the extracted radiated electromagnetic wave has directivity in the first direction and is radiated in a third direction that is perpendicular to the first and second directions. 20. A radar apparatus, comprising: an antenna device, the antenna device including:an electromagnetic wave radiation source for radiating an electromagnetic wave, the electromagnetic wave radiation source being a patch antenna or a plane dipole antenna and the electromagnetic wave radiation source extending in a first direction and configured such that the radiated electromagnetic wave has its center axis substantially in a plane extending in the first direction; andan electromagnetic wave shaping module, arranged forward of the electromagnetic wave radiation source, where a plurality of slot array rows each including a plurality of slots arranged in the horizontal direction are arranged in the vertical direction;the electromagnetic wave shaping module including at least a pair of the slot array rows arranged at positions mutually symmetrical in the second direction with respect to a plane extending in the first direction, said plane including the center axis;where each slot in a topmost slot array row, and each slot in a bottom-most array row is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source; anda reception circuit for processing an echo signal based on the electromagnetic wave discharged from the antenna device. 21. The radar apparatus of claim 20, further comprising a driving device for horizontally rotating the antenna device. 22. The antenna device of claim 20, where each slot in a topmost slot array row, and each slot in a bottom-most array row is configured to extract a radiated electromagnetic wave from the electromagnetic wave radiation source such that the extracted radiated electromagnetic wave has directivity in the first direction and is radiated in a third direction that is perpendicular to the first and second directions.
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