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CN-121983790-A - Horn loading slot antenna

CN121983790ACN 121983790 ACN121983790 ACN 121983790ACN-121983790-A

Abstract

The invention relates to a horn loading slot antenna, belongs to the technical field of slot antennas, and solves the technical problem of high cost of the conventional millimeter wave antenna. The horn loading slot antenna comprises a metal radiation layer and a horn structure, wherein the metal radiation layer is provided with a radiation slot and a choke slot, the horn structure formed by surrounding a plurality of plate bodies is arranged on the metal radiation layer, the radiation slot is positioned in the horn structure, and the choke slot is positioned outside the horn structure. The horn loading slot antenna has the advantages of reducing loss, improving efficiency, having low standing wave, high bandwidth, simple structure and the like by forming a horn structure through a plurality of plate bodies, realizing the function of power division feeding of the traditional waveguide slot antenna, reducing cost, and simultaneously, having simple structure and lower processing cost by the plurality of plate bodies formed by the horn structure.

Inventors

  • HU HOUPING
  • XIONG YONGZHONG

Assignees

  • 成都中宇微芯科技有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (9)

  1. 1. A horn loaded slot antenna comprising: The metal radiation layer is provided with a radiation gap and a choke gap; the horn structure that forms is enclosed to the polylith plate body, installs in the metal radiation layer, the radiation gap is located in the horn structure, choke gap is located outside the horn structure.
  2. 2.A horn loaded slot antenna according to claim 1, wherein said metal radiating layer comprises a plurality of layers of metal sheets arranged in a first direction, said first direction being perpendicular to said metal sheets; The radiation gap and the choke gap are both provided with two groups, and the two groups of radiation gaps are both positioned between the two groups of choke gaps.
  3. 3. A horn loaded slot antenna as in claim 2, further comprising: the base is arranged on one side, far away from the horn structure, of the metal radiation layer, a feed cavity is formed in the base, the projection of the radiation gap on the base along the first direction is located in the feed cavity, and the projection of the choke gap on the base along the first direction is located outside the feed cavity.
  4. 4. A horn loaded slot antenna according to claim 3, wherein said base is provided with a feed coupling slot, said feed coupling slot being located in said feed cavity.
  5. 5. A horn loaded slot antenna according to claim 3, wherein said horn structure comprises: Two first plate bodies and two second plate bodies are all installed on the base, two first plate bodies are arranged relatively, two second plate bodies are arranged relatively, the first plate bodies and the second plate bodies are arranged at intervals and enclose to form a channel, and the cross section area of the channel is gradually increased from one end close to the base to one end far away from the base along the first direction.
  6. 6. The horn loading slot antenna of claim 5, wherein protrusions are provided at both ends of the first plate, and a clamping groove is provided on the second plate, and the protrusions are clamped in the clamping groove to fix the first plate and the second plate.
  7. 7. The horn loaded slot antenna of claim 6, wherein the protrusion comprises a first section and a second section, the first section extends away from the first plate, one end of the second section is mounted at one end of the first section away from the first plate, one end of the second section away from the first section extends away from the base, a gap is formed between the second section and the first plate through the second plate, and the length of the second section is less than or equal to the length of the clamping slot.
  8. 8. A horn loaded slot antenna according to claim 2, wherein each of said radiating slots has dimensions of 4.6mm x 1.5mm, the spacing between adjacent radiating slots of the same set being 5.8mm, the spacing between radiating slots of two sets being 5.6mm.
  9. 9. A horn loaded slot antenna according to claim 4, wherein the dimensions of the feed cavity are 40mm x 12mm and the dimensions of the feed coupling slot are 7.1mm x 1.2mm.

Description

Horn loading slot antenna Technical Field The invention belongs to the technical field of slot antennas, and particularly relates to a horn loading slot antenna. Background Millimeter wave technology has the advantages of high speed, large bandwidth, low power consumption and the like, and is widely applied to a plurality of fields such as communication, imaging, radar, safety detection, medical treatment and the like. In millimeter wave frequency range, the substrate integrated waveguide antenna and the microstrip antenna have higher loss and lower efficiency compared with all-metal antennas. Horn antennas are used as one of the common antennas in microwave and millimeter wave systems. Has the advantages of low standing wave, high bandwidth and simple structure. However, in the millimeter wave band, the antenna wavelength is short, and the required processing precision is high, so that the cost is increased. Disclosure of Invention The invention provides a horn loading slot antenna which is used for solving the technical problem of high cost of the conventional millimeter wave antenna. The horn loading slot antenna comprises a metal radiation layer and a horn structure, wherein the metal radiation layer is provided with a radiation slot and a choke slot, the horn structure formed by surrounding a plurality of plate bodies is arranged on the metal radiation layer, the radiation slot is positioned in the horn structure, and the choke slot is positioned outside the horn structure. According to the horn loading slot antenna, the horn structure is formed by the plurality of plate bodies, so that the loss can be reduced, the efficiency is improved, the advantages of low standing wave, high bandwidth, simple structure and the like are achieved, the function of power division feeding of the traditional waveguide slot antenna is achieved, the cost is reduced, meanwhile, the plurality of plate bodies formed by the horn structure are simple in structure, and the processing cost is lower. Optionally, the metal radiation layer comprises a plurality of layers of metal sheets arranged along a first direction, the first direction is perpendicular to the metal sheets, two groups of radiation slits and two groups of choke slits are arranged, and the two groups of radiation slits are arranged between the two groups of choke slits. Optionally, the antenna further comprises a base, the base is mounted on one side, far away from the horn structure, of the metal radiation layer, a feed cavity is formed in the base, projection of the radiation gap on the base along a first direction is located in the feed cavity, and projection of the choke gap on the base along the first direction is located outside the feed cavity. Optionally, a feed coupling gap is formed on the base, and the feed coupling gap is located in the feed cavity. Optionally, the loudspeaker structure includes two first plate bodies and two second plate bodies, two first plate bodies and two second plate bodies all install in on the base, two first plate bodies set up relatively, two second plate bodies set up relatively, first plate body and second plate body interval set up and enclose and establish the formation passageway, the cross sectional area of passageway is followed in first direction is close to the one end of base is kept away from the one end of base increases gradually. Optionally, the two ends of the first plate body are provided with protrusions, the second plate body is provided with a clamping groove, and the protrusions are clamped in the clamping groove so as to fix the first plate body and the second plate body. Optionally, the protrusion includes a first section and a second section, the first section extends in a direction away from the first plate body, one end of the second section is mounted at one end of the first section away from the first plate body, one end of the second section away from the first section extends in a direction away from one end of the base, a gap passing through the second plate body is formed between the second section and the first plate body, and the length of the second section is smaller than or equal to the length of the clamping groove. Optionally, each of the radiation slits has a size of 4.6mm×1.5mm, a spacing between adjacent radiation slits of the same group is 5.8mm, and a spacing between two groups is 5.6mm. Optionally, the size of the feeding cavity is 40mm×12mm, and the size of the feeding coupling slit is 7.1mm×1.2mm. Drawings In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic