Phase frequency sweep antenna

Abstract

The utility model relates to a phase frequency sweep antenna, which comprises a shell, a slot antenna, a front-end dielectric component and a metal plate framework, wherein the slot antenna, the front-end dielectric component and the metal plate framework are accommodated in the shell; a plurality of first hasps and a plurality of second hasps are arranged on the inner surface of the shell; the front-end dielectric assembly comprises a supporting piece and a dielectric rod arranged on the supporting piece, the dielectric rod is connected with the slot antenna, and a first groove used for being in lap joint with the first hasp and a second groove used for being in lap joint with the second hasp are formed in the two end portions of the supporting piece in the first direction respectively; the sheet metal framework comprises two first sheet metal parts and a second sheet metal part, the two first sheet metal parts are arranged on the two side portions of the slot antenna in the first direction respectively and are in lap joint with the first hasp and the second hasp in a one-to-one correspondence mode respectively, and the second sheet metal part is connected with the slot antenna; the two ends, in the first direction, of the second sheet metal part are in lap joint with the first hasp and the second hasp correspondingly. According to the utility model, the shell is connected with the front-end medium assembly and the metal plate framework in a lap joint manner, so that wave deformation or cracking of the shell is avoided.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a phase-frequency sweep antenna. Background Technology

[0002] Current phase-frequency swept antennas typically house a slotted antenna, a front-end dielectric component, and a sheet metal frame, all tightly connected within their housing. The skin of the phase-frequency swept antenna housing is often made of non-metallic materials, and these materials are fastened to the sheet metal frame and the front-end dielectric component using fasteners. While this design can meet requirements for lightweight, low cost, and ruggedness to some extent, the significant difference in expansion coefficients between the non-metallic materials used for the skin and the metallic materials used for the sheet metal frame leads to different deformation amounts under high temperatures. Furthermore, the fastening forces between the skin, the sheet metal frame, and the front-end dielectric component can cause the skin to deform in a wavy pattern. Severe deformation can even cause the skin to crack, compromising the ruggedness design.

[0003] In existing technologies, polyetheretherketone (PEEK), a non-metallic material with a coefficient of thermal expansion similar to that of the sheet metal frame, is generally used as the skin material. This solves the problem of wavy deformation and cracking that occurs after the non-metallic skin is connected to the sheet metal frame with fasteners. However, PEEK material is expensive, which will significantly increase the cost of antenna manufacturing and does not meet the requirements of low-cost design.

[0004] Therefore, it is necessary to improve one or more of the problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that this section is intended to provide background or context for the technical solutions of this utility model as set forth in the claims. The description herein does not constitute an admission that it is prior art simply because it is included in this section. Utility Model Content

[0006] The purpose of this utility model is to provide a phase frequency sweep antenna, in which the housing is connected to the front-end dielectric component and the sheet metal frame in an overlapping manner to avoid the housing from being deformed or cracked.

[0007] According to the present invention, a phase-frequency sweep antenna is provided, including a housing and a slot antenna, a front-end dielectric assembly and a sheet metal frame housed within the housing;

[0008] The housing has multiple first buckles and multiple second buckles on its two inner surfaces arranged opposite to each other along the first direction, and the multiple first buckles and multiple second buckles are all spaced apart along the second direction;

[0009] The front-end dielectric assembly is located on one side of the slot antenna along the second direction and includes a support member and a dielectric rod disposed on the support member. The dielectric rod is connected to the slot antenna. The support member has a first groove and a second groove respectively opened at both ends along the first direction. The first groove is used to engage the first buckle, and the second groove is used to engage the second buckle.

[0010] The sheet metal frame includes two first sheet metal parts and at least one second sheet metal part. The two first sheet metal parts are respectively disposed on both sides of the slot antenna along the first direction and respectively overlap with the first buckle and the second buckle. The second sheet metal part is located on the other side of the slot antenna along the second direction and is connected to the slot antenna. The two ends of the second sheet metal part along the first direction overlap with the first buckle and the second buckle respectively.

[0011] The first direction, the second direction, and the length direction of the slot antenna are perpendicular to each other.

[0012] Preferably, the housing includes a first sub-housing and a second sub-housing arranged adjacent to each other along a third direction, the first sub-housing and the second sub-housing each having a receiving cavity and an opening end communicating with the receiving cavity;

[0013] Wherein, the opening end has a stepped structure, and the opening ends of the first sub-shell and the second sub-shell are connected by a stepped structure, and the third direction is the length direction of the slot antenna.

[0014] Preferably, both the first sub-shell and the second sub-shell include a skin and an end cap. The skin is rectangular and cylindrical. The end cap is located at one end of the skin along its axial direction. The stepped structure is located at the other end of the skin along its axial direction. The first buckle and the second buckle are respectively located on two inner surfaces of the skin that are arranged opposite to each other along a first direction.

[0015] The axial direction of the skin is parallel to the length direction of the slot antenna.

[0016] Preferably, both the first and second latches include a connected and perpendicular connecting section and an overlapping section. The connecting section is connected to the inner surface of the housing and parallel to the first direction. The inner surface of the housing, the connecting section, and the overlapping section form an overlapping groove.

[0017] The openings of the interlocking slots of the multiple first buckles face different directions, and the openings of the interlocking slots of the multiple second buckles face different directions.

[0018] Preferably, the openings of the first groove and the second groove are oriented toward the second direction;

[0019] When the first buckle overlaps with the first groove, the overlapping section of the first buckle is accommodated in the first groove and has a first gap with the groove wall of the first groove;

[0020] When the second buckle overlaps with the second groove, the overlapping section of the second buckle is accommodated in the second groove and has a second gap between it and the groove wall of the second groove.

[0021] Preferably, the height of the support member along the first direction is equal to the distance between the two inner surfaces of the housing arranged opposite each other along the first direction.

[0022] Preferably, the first sheet metal part has an L-shaped structure, including a first vertical segment and a first horizontal segment that are connected and perpendicular to each other. The first vertical segment is parallel to the first direction and connected to the slot antenna.

[0023] When the two first sheet metal parts are respectively connected to the first buckle and the second buckle, the first horizontal section of the first sheet metal part is accommodated in the overlapping groove. One side surface of the first horizontal section along the first direction abuts against the inner surface of the housing, and the other side surface along the first direction has a third gap with the overlapping section. The end of the first horizontal section away from the first vertical section along the second direction has a fourth gap with the connecting section.

[0024] Preferably, the second sheet metal part is a U-shaped structure, including a second vertical section and two second horizontal sections connected to both ends of the second vertical section along the first direction. The second vertical section is arranged parallel to the first direction and connected to the slot antenna, and the second horizontal sections are perpendicular to the second vertical section.

[0025] When the two second horizontal segments of the second sheet metal part are respectively connected to the first buckle and the second buckle in a one-to-one correspondence, the second horizontal segment is accommodated in the overlapping groove, and one side surface along the first direction abuts against the inner surface of the housing, and the other side surface along the first direction has a fifth gap with the overlapping segment, and the end of the second horizontal segment away from the second vertical segment along the second direction has a sixth gap with the connecting segment.

[0026] Preferably, multiple second sheet metal parts are provided, and the multiple second sheet metal parts are arranged at intervals along the second direction; wherein, the sheet metal frame further includes connecting sheet metal, the connecting sheet metal extends along the second direction, and one end is connected to the other side of the slot antenna along the second direction, and the multiple second sheet metal parts are respectively connected to the connecting sheet metal.

[0027] Preferably, along the second direction, a coaxial connector is provided at one end of the slot antenna away from the front-end dielectric assembly, and a hole structure for accommodating the coaxial connector is provided on the second sheet metal part.

[0028] The technical solution provided by this utility model can include the following beneficial effects:

[0029] In this invention, on one hand, by providing a first and a second latch on the inner surface of the housing arranged opposite each other along a first direction, and by providing a first groove for engaging the first latch and a second groove for engaging the second latch on the support of the front-end dielectric assembly, the front-end dielectric assembly and the housing are fixed together by mutual overlapping. On the other hand, the sheet metal frame is provided with two first sheet metal parts that correspond one-to-one with the first and second latches, thereby fixing the two sides of the slot antenna along the first direction to the housing by mutual overlapping. The sheet metal frame also engages with the first and second latches at both ends of the second sheet metal parts, thereby fixing the side of the slot antenna away from the front-end dielectric assembly along the second direction to the housing by mutual overlapping. This cooperative overlapping structure improves the fastener connection method between the antenna housing and the front-end dielectric assembly and the sheet metal frame in the prior art. Furthermore, in high-temperature environments, it reduces the fastening forces between the housing and the front-end dielectric assembly, and between the housing and the sheet metal frame, which helps to prevent the housing from warping or cracking. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0031] Figure 1 This diagram shows an exploded view of the phase-frequency swept antenna in an embodiment of the present invention.

[0032] Figure 2 A schematic diagram of the external structure of the phase-frequency swept antenna in an embodiment of this utility model is shown;

[0033] Figure 3 This diagram shows the structural schematic of the skin of the first sub-shell and the second sub-shell of the phase-frequency sweep antenna in an embodiment of the present invention;

[0034] Figure 4 This diagram illustrates the structure of the phase-frequency sweep antenna skin and the first and second fasteners on the skin in an embodiment of the present invention. Figure 1 ;

[0035] Figure 5 A cross-sectional view of the phase-frequency swept antenna in an embodiment of the present invention is shown.

[0036] Figure 6 This diagram shows a partial cross-sectional view of the phase-frequency swept antenna in an embodiment of the present invention. Figure 1 ;

[0037] Figure 7 This diagram shows a partial cross-sectional view of the phase-frequency swept antenna in an embodiment of the present invention. Figure 2 ;

[0038] Figure 8 This diagram shows a partial cross-sectional view of the phase-frequency swept antenna in an embodiment of the present invention. Figure 3 ;

[0039] Figure 9 This diagram shows a partial exploded view of the phase-frequency swept antenna in an embodiment of the present invention. Figure 1 ;

[0040] Figure 10 Show Figure 9 Enlarged view of point A in the middle;

[0041] Figure 11 This diagram shows a partial exploded view of the phase-frequency swept antenna in an embodiment of the present invention. Figure 2 ;

[0042] Figure 12 Show Figure 11 Enlarged view of point B in the middle;

[0043] Figure 13 This diagram illustrates the structure of the phase-frequency sweep antenna skin and the first and second fasteners on the skin in an embodiment of the present invention. Figure 2 ;

[0044] Figure 14 This diagram shows the structure of the front-end dielectric component and sheet metal frame of the phase-frequency swept antenna in this embodiment of the present invention.

[0045] Figure label:

[0046] 100. Shell; 110. First sub-shell; 120. Second sub-shell; 101. Skin; 1011. First latch; 1012. Second latch; 10101. Connecting section; 10102. Overlapping section; 102. End cap; 103. Open end; 1031. First stepped surface; 1032. Second stepped surface;

[0047] 200. Slot antenna; 210. Coaxial connector;

[0048] 300, front-end media assembly; 310, media rod; 320, support plate; 321, first groove; 3211, first gap; 3212, seventh gap; 322, second groove; 3221, second gap; 3222, eighth gap;

[0049] 400. Sheet metal frame; 410. First sheet metal part; 411. First vertical section; 412. First horizontal section; 4121. Third gap; 4122. Fourth gap; 420. Second sheet metal part; 421. Second vertical section; 422. Second horizontal section; 4221. Fifth gap; 4222. Sixth gap; 430. Connecting sheet metal; 431. Plate body; 432. Fastener. Detailed Implementation

[0050] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0051] Furthermore, the accompanying drawings are merely illustrative diagrams of embodiments of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0052] This example embodiment first provides a phase-frequency swept antenna, including a housing 100 and a slot antenna 200, a front-end dielectric assembly 300, and a sheet metal frame 400 housed within the housing 100. (See reference...) Figure 1 As shown, the housing 100 has a plurality of first buckles 1011 and a plurality of second buckles 1012 respectively arranged on two inner surfaces opposite to each other along the first direction, and the plurality of first buckles 1011 and the plurality of second buckles 1012 are all spaced apart along the second direction;

[0053] The front-end dielectric assembly 300 is located on one side of the slot antenna 200 along the second direction, and includes a support member and a dielectric rod 310 disposed on the support member. The dielectric rod 310 is connected to the slot antenna 200. The support member has a first groove 321 and a second groove 322 respectively opened at both ends along the first direction. The first groove 321 is used to overlap the first buckle 1011, and the second groove 322 is used to overlap the second buckle 1012.

[0054] The sheet metal frame 400 includes two first sheet metal parts 410 and at least one second sheet metal part 420. The two first sheet metal parts 410 are respectively disposed on both sides of the slot antenna 200 along the first direction and respectively overlap with the first buckle 1011 and the second buckle 1012. The second sheet metal part 420 is located on the other side of the slot antenna 200 along the second direction and is connected to the slot antenna 200. The two ends of the second sheet metal part 420 along the first direction overlap with the first buckle 1011 and the second buckle 1012 respectively.

[0055] Wherein, the first direction is perpendicular to the second direction, and is also perpendicular to the length direction of the slot antenna 200, as shown in the example below. Figure 1 The direction indicated by the middle arrow ab, the first direction as follows Figure 1 The direction indicated by the middle arrow cd is the length direction of the slot antenna 200 as follows: Figure 1 The direction indicated by the middle arrow ef. It should be noted that the length direction of the slot antenna 200 is the direction in which the size of the slot antenna 200 is the largest. The first direction can be regarded as the height direction of the slot antenna 200, and the second direction can be regarded as the width direction of the slot antenna 200.

[0056] It should be understood that the portion of the housing 100 provided with the first buckle 1011 and the second buckle 1012 is the skin structure 101. The number of the multiple first buckles 1011 and the multiple second buckles 1012 are the same, and they are arranged in a one-to-one correspondence.

[0057] It should also be understood that the opening orientation of the first groove 321 and the second groove 322 on the above-mentioned support member is matched according to the specific structural design of the first buckle 1011 and the second buckle 1012, so as to ensure that the first buckle 1011 and the first groove 321 overlap, and the second buckle 1012 and the second groove 322 overlap.

[0058] With the phase-frequency sweep antenna in the above embodiments, on the one hand, by providing a first buckle 1011 and a second buckle 1012 on the inner surface of the housing 100 arranged opposite each other along the first direction, and by providing a first groove 321 for attaching the first buckle 1011 and a second groove 322 for attaching the second buckle 1012 on the support member of the front-end medium assembly 300, the front-end medium assembly 300 and the housing 100 are fixed by mutual overlap; on the other hand, by providing two first sheet metal parts 410 that are respectively attached to the first buckle 1011 and the second buckle 1012, the sheet metal frame 400 is fixed to the two sides of the slot antenna 200 along the first direction and the housing 100 by mutual overlap. The sheet metal frame 400 is attached to the first buckle 1011 and the second buckle 1012 at both ends of the second sheet metal parts 420, so that the side of the slot antenna 200 away from the front-end medium assembly 300 along the second direction is fixed to the housing 100 by mutual overlap. The above-mentioned overlapping structure improves the fastener connection between the antenna housing 100, the front-end dielectric component 300, and the sheet metal frame 400 in the prior art. In addition, under high temperature environment, it can reduce the fastening force between the housing 100 and the front-end dielectric component 300, and between the housing 100 and the sheet metal frame 400, which helps to avoid the housing 100 from wave deformation or cracking.

[0059] Below, we will refer to Figures 1 to 12 The various parts of the phase-frequency swept antenna described in this example embodiment will be explained in more detail.

[0060] In one embodiment, reference Figures 1 to 4 As shown, the housing 100 includes a first sub-housing 110 and a second sub-housing 120 arranged adjacent to each other along a third direction. Both the first sub-housing 110 and the second sub-housing 120 have a receiving cavity and an opening end 103 communicating with the receiving cavity.

[0061] Wherein, the opening end 103 has a stepped structure, and the opening ends 103 of the first sub-shell 110 and the second sub-shell 120 are connected by a stepped structure. The third direction is the length direction of the slot antenna 200, and the third direction is as follows: Figure 1 The direction indicated by the middle arrow ef.

[0062] By designing the opening end 103 of the first sub-shell 110 and the opening end 103 of the second sub-shell 120 as a stepped structure, when the phase frequency sweep antenna is working in a high temperature environment, the first sub-shell 110 and the second sub-shell 120 can be connected by the step structure to ensure that the outer surface of the shell 100 is flat after thermal expansion along the length direction of the slot antenna 200.

[0063] Optionally, the outer peripheral surface of the opening end 103 of the first sub-shell 110 is a first stepped surface 1031, and the inner peripheral surface of the opening end 103 of the second sub-shell 120 is a second stepped surface 1032, so as to achieve a stepped structure matching connection between the opening end 103 of the first sub-shell 110 and the opening end 103 of the second sub-shell 120.

[0064] Specifically, HZ-706 sealant is applied between the opening end 103 of the first sub-shell 110 and the opening end 103 of the second sub-shell 120. This not only improves the connection stability between the first sub-shell 110 and the second sub-shell 120, but also allows for a certain amount of expansion margin due to the adhesive connection design of the sealant.

[0065] Furthermore, both the first sub-shell 110 and the second sub-shell 120 include a skin 101 and an end cap 102. The skin 101 is rectangular cylindrical, the end cap 102 is disposed at one end of the skin 101 along its axial direction, the stepped structure is disposed at the other end of the skin 101 along its axial direction, and the first buckle 1011 and the second buckle 1012 are respectively disposed on two inner surfaces of the skin 101 arranged opposite to each other along a first direction.

[0066] The axial direction of the skin 101 is parallel to the length direction of the slot antenna 200.

[0067] The above structural design facilitates the assembly of the first sub-shell 110 and the second sub-shell 120. Furthermore, the first buckle 1011 and the second buckle 1012 are respectively disposed on two inner surfaces of the skin 101 arranged opposite each other along the first direction. This reduces the fastening force between the skin 101 and the front-end medium assembly 300, and between the shell 100 and the sheet metal frame 400, under high-temperature conditions, thus helping to prevent the skin 101 of the shell 100 from exhibiting wave deformation or cracking.

[0068] Specifically, HZ-706 sealant is applied between the end cap 102 and the skin 101 to improve the connection stability between the end cap 102 and the skin 101.

[0069] In one embodiment, reference Figures 4 to 8 As shown, both the first buckle 1011 and the second buckle 1012 include a connected and perpendicular connecting section 10101 and an overlapping section 10102. The connecting section 10101 is connected to the inner surface of the housing 100 and parallel to the first direction. The inner surface of the housing 100, the connecting section 10101 and the overlapping section 10102 form an overlapping groove.

[0070] The openings of the overlapping grooves of the multiple first buckles 1011 are oriented differently, and the openings of the overlapping grooves of the multiple second buckles 1012 are oriented differently.

[0071] In the above-described structural configuration, the first latch 1011 and the second latch 1012 are L-shaped latch structures, and have overlapping sections 10102 and overlapping grooves for overlapping with other structural components. By having the openings of the overlapping grooves of the multiple first latches 1011 facing different directions, and the openings of the overlapping grooves of the multiple second latches 1012 facing different directions, movement along the second direction is prevented after the first sub-housing 110 and the second sub-housing 120 are matched and installed.

[0072] Specifically, one end of the connecting segment 10101 along the first direction is connected to the inner surface of the housing 100, and the other end is connected to one end of the overlapping segment 10102 along the second direction. The other end of the overlapping segment 10102 along the second direction is used to insert into the first groove 321 or the second groove 322, or to insert into the inner side of the first sheet metal part 410 or the second sheet metal part 420.

[0073] Further reference Figure 5 and Figure 6 As shown, the support includes two support plates 320 spaced apart along a second direction, the dielectric rod 310 extends along the second direction and is connected to the two support plates 320, and one end of the dielectric rod 310 extends out of the support plate 320 toward the slot antenna 200 and is connected to the slot antenna 200.

[0074] The support plate 320 has a first groove 321 and a second groove 322 respectively at its two ends along the first direction.

[0075] The aforementioned support member, consisting of two support plates 320, is used to fix and support the medium rod 310. It not only occupies little space but also provides fixed support for the medium rod 310.

[0076] Optionally, multiple dielectric rods 310 are provided, and the multiple dielectric rods 310 are arranged at intervals along the third direction; the support plate 320 extends along the third direction to ensure that both support plates 320 can be connected to each dielectric rod 310.

[0077] Further reference Figure 5 and Figure 6 As shown, the openings of the first groove 321 and the second groove 322 are arranged facing the second direction so as to be adapted and overlapped with the first buckle 1011 and the second buckle 1012 composed of the connecting section 10101 and the overlapping section 10102 in the above embodiment.

[0078] When the first buckle 1011 overlaps with the first groove 321, the overlapping section 10102 of the first buckle 1011 is accommodated in the first groove 321, and there is a first gap 3211 between the buckle 1011 and the groove wall of the first groove 321.

[0079] When the second buckle 1012 overlaps with the second groove 322, the overlapping section 10102 of the second buckle 1012 is accommodated in the second groove 322, and there is a second gap 3221 between the buckle 1012 and the groove wall of the second groove 322.

[0080] The first buckle 1011 is connected to the first groove 321 by having its overlapping section 10102 accommodated in the first groove 321. That is, one end of the support plate 320 along the first direction is connected to the first buckle 1011. After the first buckle 1011 is connected to the first groove 321, there is a first gap 3211 between the overlapping section 10102 of the first buckle 1011 and the groove wall of the first groove 321. The first gap 3211 includes the gap between the two side surfaces of the overlapping section 10102 of the first buckle 1011 along the first direction and the two side walls of the first groove 321, and the gap between the end of the overlapping section 10102 along the second direction away from the connecting section 10101 and the bottom wall of the first groove 321. The second buckle 1012 is fitted into the second groove 322 by the overlapping section 10102 of the second buckle 1012 being housed within the second groove 322. Specifically, the other end of the support plate 320 along the first direction overlaps with the second buckle 1012. After the second buckle 1012 is fitted into the second groove 322, a second gap 3221 exists between the overlapping section 10102 of the second buckle 1012 and the groove wall of the second groove 322. This second gap 3221 includes the gap between the two side surfaces of the overlapping section 10102 along the first direction and the two side walls of the second groove 322, and the gap between the end of the overlapping section 10102 along the second direction away from the connecting section 10101 and the bottom wall of the second groove 322. Through the design of the first gap 3211 and the second gap 3221, a certain amount of expansion and deformation allowance is provided for the skin 101 in the first direction, preventing the skin 101 from undergoing wave deformation at high temperatures.

[0081] It should be noted that when the first buckle 1011 overlaps with the first groove 321, a portion of the opening of the first groove 321 is accommodated in the overlap groove, and along the second direction, a seventh gap 3212 exists between the portion of the opening of the first groove 321 accommodated in the overlap groove and the connecting section 10101, and at this time, the seventh gap 3212 and the first gap 3211 are connected; when the second buckle 1012 overlaps with the second groove 322, a portion of the opening of the second groove 322 is accommodated in the overlap groove. In the second direction, the second groove 322 has an eighth gap 3222 between the part of the opening that is accommodated in the overlapping groove and the connecting section 10101. At this time, the eighth gap 3222 and the second gap 3221 are connected. Through the cooperation of the first gap 3211 and the seventh gap 3212, and the cooperation of the second gap 3221 and the eighth gap 3222, it can be ensured that the support plate 320 can have a certain expansion deformation margin in the second direction, so as to avoid the skin 101 from undergoing more complex and severe deformation at high temperature.

[0082] Optionally, the height of the support member along the first direction is equal to the distance between the two inner surfaces of the housing 100 arranged opposite each other along the first direction; alternatively, it can be considered that the height of the support plate 320 along the first direction is equal to the distance between the two inner surfaces of the housing 100 arranged opposite each other along the first direction. This dimensional design ensures that after the first buckle 1011 overlaps with the first groove 321 and the second buckle 1012 overlaps with the second groove 322, the two ends of the support plate 320 along the first direction are respectively in one-to-one contact with the two inner surfaces of the housing 100 arranged opposite each other along the first direction. This improves the assembly stability of the front-end medium assembly 300 and the housing 100 without interfering with the cooperation through the first gap 3211 and the sixth gap 4222, as well as the cooperation through the second gap 3221 and the seventh gap 3212, thus preventing the skin 101 from deforming and cracking.

[0083] In one embodiment, reference Figure 5 and Figure 7 As shown, the first sheet metal part 410 has an L-shaped structure, including a first vertical section 411 and a first horizontal section 412 that are connected and perpendicular to each other. The first vertical section 411 is parallel to the first direction and is connected to the slot antenna 200.

[0084] When the two first sheet metal parts 410 are respectively connected to the first buckle 1011 and the second buckle 1012, the first horizontal section 412 of the first sheet metal part 410 is accommodated in the overlapping groove. One side surface of the first horizontal section 412 along the first direction abuts against the inner surface of the housing 100, and the other side surface along the first direction has a third gap 4121 between it and the overlapping section 10102. The end of the first horizontal section 412 away from the first vertical section 411 along the second direction has a fourth gap 4122 between it and the connecting section 10101.

[0085] The L-shaped structure of the first sheet metal part 410 described above helps to reduce the space occupied by the first sheet metal part 410, and also enables a tight connection with the slot antenna 200 and an overlap with the first buckle 1011 and the second buckle 1012. The above-mentioned structural design, through the first horizontal section 412 of the first sheet metal part 410 being housed in the overlapping groove, enables the two first sheet metal parts 410 to overlap one-to-one with the first buckle 1011 and the second buckle 1012; and after the overlap, that is, when the first horizontal section 412 is housed in the overlapping groove, one side surface of the first horizontal section 412 along the first direction abuts against the inner surface of the housing 100, and the other side surface along the first direction has a third gap 4121 between it and the overlapping section 10102, and the end of the first horizontal section 412 along the second direction away from the first vertical section 411 has a fourth gap 4122 between it and the connecting section 10101. The third gap 4121 provides a certain expansion deformation margin for the skin 101 in the first direction to avoid the skin 101 from wavy deformation at high temperature, and the fourth gap 4122 provides a certain expansion deformation margin for the skin 101 in the second direction to avoid the skin 101 from undergoing more complex and severe deformation at high temperature.

[0086] In one embodiment, reference Figures 9 to 12 As shown, multiple second sheet metal parts 420 are provided, and the multiple second sheet metal parts 420 are arranged at intervals along the second direction; wherein, the sheet metal frame 400 further includes a connecting sheet metal 430, the connecting sheet metal 430 extends along the second direction, and one end is connected to the other side of the slot antenna 200 along the second direction, and the multiple second sheet metal parts 420 are respectively connected to the connecting sheet metal 430.

[0087] By arranging multiple second sheet metal parts 420 and connecting sheet metal parts 430 that cooperate with the multiple second sheet metal parts 420, the gap between two adjacent second sheet metal parts 420 can provide more installation space for the slot antenna 200 on the other side along the second direction.

[0088] For example, the slot antenna 200 has a coaxial connector 210 at one end away from the front-end dielectric assembly 300, and the second sheet metal part 420 has a hole structure for accommodating the coaxial connector 210; wherein, the gap between two adjacent second sheet metal parts 420 and the hole structure on the second sheet metal part 420 provide installation space for the coaxial connector 210.

[0089] For details, please refer to Figure 10 and Figure 12 As shown, the connecting sheet metal 430 includes a plate 431 and a plurality of fasteners 432 spaced apart from the plate 431 along the second direction. The plate 431 extends along the second direction and is fastened to one end of the slot antenna 200 along the other side of the slot antenna 200 along the second direction. The plurality of fasteners 432 are fastened to a plurality of second sheet metal parts 420 in a corresponding manner.

[0090] In one embodiment, reference Figure 5 and Figure 8 As shown, the second sheet metal part 420 has a U-shaped structure, including a second vertical section 421 and two second horizontal sections 422 connected to the two ends of the second vertical section 421 along the first direction. The second vertical section 421 is arranged parallel to the first direction and connected to the slot antenna 200. The second horizontal sections 422 are perpendicular to the second vertical section 421.

[0091] When the two second horizontal segments 422 of the second sheet metal part 420 are respectively connected to the first buckle 1011 and the second buckle 1012 in a one-to-one correspondence, the second horizontal segment 422 is accommodated in the overlapping groove, and one side surface along the first direction abuts against the inner surface of the housing 100, and the other side surface along the first direction has a fifth gap 4221 between it and the overlapping segment 10102, and the end of the second horizontal segment 422 away from the second vertical segment 421 along the second direction has a sixth gap 4222 between it and the connecting segment 10101.

[0092] The aforementioned design of the U-shaped second sheet metal part 420 helps reduce the space occupied by the second sheet metal part 420, especially when multiple second sheet metal parts 420 are arranged, which makes it easier to control the overall size of the antenna. In addition, the U-shaped second sheet metal part 420 can also overlap with the first buckle 1011 and the second buckle 1012, and cooperate with the connecting sheet metal 430 to securely connect with the slot antenna 200. Furthermore, the two second horizontal segments 422 of the second sheet metal part 420 are accommodated one-to-one in the overlapping grooves of the first buckle 1011 and the second buckle 1012, so that the second sheet metal part 420 can overlap with the first buckle 1011 and the second buckle 1012 simultaneously. After overlapping, that is, when the second horizontal segment 422 is accommodated in the overlapping groove, one side surface of the second horizontal segment 422 along the first direction abuts against the inner surface of the housing 100, and the other side surface along the first direction abuts against the overlapping segment 10102. There is a fifth gap 4221 between the second horizontal segment 422 and the connecting segment 10101. The second horizontal segment 422 has a sixth gap 4222 between the end of the second horizontal segment 422 away from the second vertical segment 421 along the second direction and the connecting segment 10101. The fifth gap 4221 is used to leave a certain amount of expansion deformation margin for the skin 101 in the first direction to avoid the skin 101 from wavy deformation at high temperature. The sixth gap 4222 is used to leave a certain amount of expansion deformation margin for the skin 101 in the second direction to avoid the skin 101 from undergoing more complex and severe deformation at high temperature.

[0093] Optionally, the first buckle 1011 and the second buckle 1012 both extend in a third direction, the first groove 321 and the second groove 322 both extend in a third direction, and the first sheet metal part 410 and the second sheet metal part 420 both extend in a third direction, to improve the stability of the connection between the support plate 320, the first sheet metal part 410 and the second sheet metal part 420 and the first buckle 1011 and the second buckle 1012. The first sheet metal part 410 is provided with multiple fasteners spaced apart in a third direction to achieve stable connection with the slot antenna 200; the connecting sheet metal 430 is provided with multiple fasteners spaced apart in a third direction to stably install multiple second sheet metal parts 420 extending in a third direction within the housing 100.

[0094] It should be noted that in the front-end dielectric assembly 300, the connection between the dielectric rod 310 and the support member is a fastener connection, and the connection between the dielectric rod 310 and the slot antenna 200 is a fastener connection; in the sheet metal frame 400, the connection between the first sheet metal part 410 and the slot antenna 200 is a fastener connection, the connection between the second sheet metal part 420 and the fixing member 432 connecting the sheet metal 430 is a fastener connection, and the connection between the plate 431 connecting the sheet metal 430 and the slot antenna 200 is a fastener connection. The aforementioned fasteners can be small fasteners such as screws or pins.

[0095] The following describes the assembly process of the phase-frequency swept antenna in this embodiment:

[0096] The slot antenna 200, sheet metal frame 400, and front-end dielectric component 300 are assembled into an assembly using fasteners and placed on the work platform. The bottom of the assembly is raised to ensure that the lower surface of the assembly is 5-10 mm away from the work platform.

[0097] Along the third direction, the skin 101 of the first sub-shell 110 is inserted from the end face of the assembled assembly until, in the third direction, the end face of the skin 101 of the first sub-shell 110 is flush with the end face of the assembly.

[0098] Along the third direction, the skin 101 of the second sub-shell 120 is inserted from the other end face of the assembled assembly until, in the third direction, the second step surface 1032 of the skin 101 of the second sub-shell 120 is inserted into the end of the first step surface 1031 of the skin 101 of the first sub-shell 110; at this time, the first buckle 1011 and the second buckle 1012 on the skin 101 of the first sub-shell 110 and the skin 101 of the second sub-shell 120 respectively engage with the corresponding positions of the sheet metal frame 400 and the front end medium assembly 300.

[0099] Apply sealant of type HZ-706 to the mating ends of the first step surface 1031 and the second step surface 1032 to seal the edges of the first step surface 1031 and the second step surface 1032.

[0100] The end cap 102 of the first sub-house 110 is assembled to the skin 101 of the first sub-house 110, and the end cap 102 of the second sub-house 120 is assembled to the skin 101 of the second sub-house 120.

[0101] Apply sealant of type HZ-706 to the joint between the end cap 102 and the skin 101 of the first sub-housing 110, and apply sealant of type HZ-706 to the joint between the end cap 102 and the skin 101 of the second sub-housing 120.

[0102] refer to Figure 13 and Figure 14 As shown in the figure, the key dimensions of the phase-frequency swept antenna in the above embodiment satisfy the following relationships: L1=B1=J1; L2≤B2=J2; J3≤L3.

[0103] In one specific embodiment, L1 = 95mm; L2 = 87mm; L3 = 79mm; B1 = 95mm; B2 = 90mm; J1 = 95mm; J2 = 90mm; J3 = 74mm.

[0104] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" in the above description indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0106] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0107] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0109] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

Claims

1. A phase-frequency swept antenna, characterized in that, Includes a housing and a slot antenna, a front-end dielectric assembly, and a sheet metal frame housed within the housing; The housing has multiple first buckles and multiple second buckles on its two inner surfaces arranged opposite to each other along the first direction, and the multiple first buckles and multiple second buckles are all spaced apart along the second direction; The front-end dielectric assembly is located on one side of the slot antenna along the second direction and includes a support member and a dielectric rod disposed on the support member. The dielectric rod is connected to the slot antenna. The support member has a first groove and a second groove respectively opened at both ends along the first direction. The first groove is used to engage the first buckle, and the second groove is used to engage the second buckle. The sheet metal frame includes two first sheet metal parts and at least one second sheet metal part. The two first sheet metal parts are respectively disposed on both sides of the slot antenna along the first direction and respectively overlap with the first buckle and the second buckle. The second sheet metal part is located on the other side of the slot antenna along the second direction and is connected to the slot antenna. The two ends of the second sheet metal part along the first direction overlap with the first buckle and the second buckle respectively. The first direction, the second direction, and the length direction of the slot antenna are perpendicular to each other.

2. The phase-frequency swept antenna according to claim 1, characterized in that, The housing includes a first sub-housing and a second sub-housing arranged adjacent to each other along a third direction, and both the first sub-housing and the second sub-housing have a receiving cavity and an opening end communicating with the receiving cavity; Wherein, the opening end has a stepped structure, and the opening ends of the first sub-shell and the second sub-shell are connected by a stepped structure, and the third direction is the length direction of the slot antenna.

3. The phase-frequency swept antenna according to claim 2, characterized in that, Both the first sub-shell and the second sub-shell include a skin and an end cap. The skin is rectangular cylindrical. The end cap is located at one end of the skin along its axial direction. The stepped structure is located at the other end of the skin along its axial direction. The first buckle and the second buckle are respectively located on two inner surfaces of the skin that are arranged opposite to each other along a first direction. The axial direction of the skin is parallel to the length direction of the slot antenna.

4. The phase-frequency swept antenna according to claim 1, characterized in that, Both the first and second buckles include a connected and perpendicular connecting section and an overlapping section. The connecting section is connected to the inner surface of the housing and parallel to the first direction. The inner surface of the housing, the connecting section, and the overlapping section form an overlapping groove. The openings of the interlocking slots of the multiple first buckles face different directions, and the openings of the interlocking slots of the multiple second buckles face different directions.

5. The phase-frequency swept antenna according to claim 4, characterized in that, The openings of the first groove and the second groove are oriented toward the second direction; When the first buckle overlaps with the first groove, the overlapping section of the first buckle is accommodated in the first groove and has a first gap with the groove wall of the first groove; When the second buckle overlaps with the second groove, the overlapping section of the second buckle is accommodated in the second groove and has a second gap between it and the groove wall of the second groove.

6. The phase-frequency swept antenna according to claim 5, characterized in that, The height of the support member along the first direction is equal to the distance between the two inner surfaces of the housing arranged opposite each other along the first direction.

7. The phase-frequency swept antenna according to claim 4, characterized in that, The first sheet metal part has an L-shaped structure, including a first vertical segment and a first horizontal segment that are connected and perpendicular to each other. The first vertical segment is parallel to the first direction and is connected to the slot antenna. When the two first sheet metal parts are respectively connected to the first buckle and the second buckle, the first horizontal section of the first sheet metal part is accommodated in the overlapping groove. One side surface of the first horizontal section along the first direction abuts against the inner surface of the housing, and the other side surface along the first direction has a third gap with the overlapping section. The end of the first horizontal section away from the first vertical section along the second direction has a fourth gap with the connecting section.

8. The phase-frequency swept antenna according to claim 4, characterized in that, The second sheet metal part is a U-shaped structure, including a second vertical section and two second horizontal sections connected to the two ends of the second vertical section along the first direction. The second vertical section is arranged parallel to the first direction and connected to the slot antenna, and the second horizontal sections are perpendicular to the second vertical section. When the two second horizontal segments of the second sheet metal part are respectively connected to the first buckle and the second buckle in a one-to-one correspondence, the second horizontal segment is accommodated in the overlapping groove, and one side surface along the first direction abuts against the inner surface of the housing, and the other side surface along the first direction has a fifth gap with the overlapping segment, and the end of the second horizontal segment away from the second vertical segment along the second direction has a sixth gap with the connecting segment.

9. The phase-frequency swept antenna according to claim 1, characterized in that, The second sheet metal parts are provided in multiple ways, and the multiple second sheet metal parts are arranged at intervals along the second direction; wherein, the sheet metal frame also includes a connecting sheet metal, the connecting sheet metal extends along the second direction, and one end is connected to the other side of the slot antenna along the second direction, and the multiple second sheet metal parts are respectively connected to the connecting sheet metal.

10. The phase-frequency swept antenna according to claim 1, characterized in that, Along the second direction, a coaxial connector is provided at one end of the slot antenna away from the front-end dielectric assembly, and a hole structure for accommodating the coaxial connector is provided on the second sheet metal part.

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