Input and output port structure of waveguide antenna and waveguide antenna

Abstract

The utility model provides an input / output port structure of a waveguide antenna and the waveguide antenna. The input / output port structure comprises a waveguide antenna port component; one end of the waveguide antenna port component is used for being connected with a radio frequency chip, one or more antenna waveguide ports are arranged on the waveguide antenna port component in a penetrating mode, and the ends, close to the radio frequency chip, of the antenna waveguide ports correspond to signal ports of the radio frequency chip in position and are matched with the signal ports of the radio frequency chip in shape. And the other end of the antenna waveguide port is a signal output / input end. According to the utility model, the antenna waveguide port is matched with the radio frequency chip port in position and shape, the matching requirement of the waveguide port of the radio frequency chip is met, and the problem of transmission from the waveguide radio frequency chip to the waveguide antenna is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waveguide antennas, and in particular to an input and output port structure of a waveguide antenna and the waveguide antenna. Background Art

[0002] As automotive radar develops towards high-gain and high-resolution technology, waveguide antennas have been widely studied and gradually put into use.

[0003] In the application of vehicle-mounted millimeter-wave radar, waveguide antennas have gained more and more attention due to their advantages such as low loss and high isolation. Mainstream RF chip manufacturers have also gradually launched a new generation of MMIC RF chips with integrated waveguide input and output ports. Figure 2-Figure 7 As shown, a chip waveguide port for transmitting or receiving signals is provided on the RF chip, including a chip double-ridge port, a chip single-ridge port or a chip rectangular port. Therefore, a waveguide antenna port structure is required to be connected to the RF chip to realize signal transmission. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an input and output port structure of a waveguide antenna and a waveguide antenna.

[0005] According to the utility model, an input and output port structure of a waveguide antenna includes: a waveguide antenna port component;

[0006] One end of the waveguide antenna port component is used to connect to the RF chip. One or more antenna waveguide ports are arranged through the waveguide antenna port component. The end of the antenna waveguide port close to the RF chip is arranged to correspond to the position of the signal port of the RF chip and is arranged to match the shape of the signal port of the RF chip. The other end of the antenna waveguide port is a signal output / input end.

[0007] Preferably, the antenna waveguide port includes an antenna double-ridge port, an antenna single-ridge port and an antenna rectangular port;

[0008] The waveguide antenna port component is provided with any one or more of an antenna double-ridge port, an antenna single-ridge port and an antenna rectangular port.

[0009] Preferably, the antenna double-ridge port comprises an upper portion of the port and an antenna double-ridge opening connected to each other, and the antenna double-ridge opening is used to connect a radio frequency chip;

[0010] The antenna double-ridge opening shrinks inward in the middle of the two long sides to form a double ridge of the antenna port. The gap between the double ridges of the antenna port is equal to the width of the upper part of the port. The antenna double-ridge opening is aligned with the center of the upper part of the port and the center of the RF chip signal port.

[0011] Preferably, the antenna single ridge port comprises an upper portion of the port and an antenna single ridge opening connected to each other, and the antenna single ridge opening is used to connect a radio frequency chip;

[0012] The antenna single ridge opening shrinks inwards in the middle of one long side to form an antenna port single ridge, and the gap between the antenna port single ridge and the other long side of the antenna single ridge opening is equal to the width of the upper part of the port. The antenna single ridge opening is aligned with the center of the upper part of the port and the center of the RF chip signal port, or the center of the antenna single ridge opening and the upper part of the port are offset away from the antenna port single ridge, and the upper part of the port is aligned with the center of the RF chip signal port.

[0013] Preferably, the rectangular port of the antenna comprises an upper portion of the port and a rectangular opening of the antenna connected to each other, and the rectangular opening of the antenna is used to connect a radio frequency chip;

[0014] The end face size of the rectangular opening of the antenna is larger than the end face size of the upper portion of the port, and the rectangular opening of the antenna is aligned with the center of the upper portion of the port and is aligned with the center of the radio frequency chip signal port.

[0015] Preferably, the antenna waveguide ports are arranged on the waveguide antenna port component structure with staggered spacing along the long sides.

[0016] Preferably, the waveguide antenna port component is made of metal material, or a non-metal material with a metallized surface.

[0017] Preferably, the waveguide antenna port component comprises a conductive bottom surface, and the conductive bottom surface is an end surface of the waveguide antenna port component close to the radio frequency chip;

[0018] The waveguide antenna port component is connected to a PCB mainboard including a radio frequency chip via a fastener, and the conductive bottom surface is tightly matched with the chip top surface of the radio frequency chip.

[0019] Preferably, the waveguide antenna port component comprises a conductive bottom surface, the conductive bottom surface is an end surface of the waveguide antenna port component close to the radio frequency chip, and a conductive material installation area is provided on the conductive bottom surface;

[0020] The conductive material installation area is distributed on both sides of the long side of the antenna waveguide port;

[0021] Or, the conductive material installation area is distributed in the area other than the antenna waveguide port on the conductive bottom surface;

[0022] Or, the conductive material installation area is one or more circles of fixed grooves arranged around the antenna waveguide port;

[0023] The conductive material installation area is a continuous area, or is composed of a plurality of sub-areas spaced apart and combined.

[0024] A waveguide antenna provided according to the utility model comprises the input and output port structure of the waveguide antenna.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1. In the utility model, the antenna waveguide port matches the position and shape of the RF chip port, which meets the matching requirements with the RF chip waveguide port and solves the transmission problem from the waveguide RF chip to the waveguide antenna.

[0027] 2. The utility model adopts double ridges or single ridges or rectangular ports to transition to a rectangular shape to meet the connection requirements of different types of waveguide chips.

[0028] 3. The utility model adopts a structural design in which the gap between ridges and the upper part of the waveguide port are of equal width, which meets the process requirements of CNC machining or injection molding, solves the problems of manufacturing feasibility and convenience, and has high manufacturing feasibility.

[0029] 4. The utility model adopts a variety of assembly and matching methods of antenna waveguide ports and chip ports, which can be applied to different performance requirements and manufacturing processes.

[0030] 5. The utility model adopts a soft conductive sticker with a single-sided adhesive or conductive glue dispensing to absorb manufacturing and assembly errors, reduce manufacturing accuracy, reduce losses, and improve isolation performance.

[0031] 6. The waveguide port size of the antenna of the utility model is compact, the matching degree is high, the transmission performance is excellent, and the manufacturing feasibility is high.

[0032] 7. The soft conductive sticker or conductive adhesive of the utility model is only bonded to the antenna port surface, which is convenient for parts storage, transportation, assembly and repeated disassembly and assembly. At the same time, it can reduce the process steps of radar terminal assembly and facilitate customer operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0034] Figure 1 This is a stereogram of the input and output ports of the waveguide antenna in the utility model;

[0035] Figure 2 This is a stereogram of the novel RF chip waveguide port example 1;

[0036] Figure 3 This is a stereogram of the novel RF chip waveguide port example 2;

[0037] Figure 4 This is a stereogram of the novel RF chip waveguide port example 3;

[0038] Figure 5 This is a stereogram of Example 4 of the waveguide port of a new type of radio frequency chip;

[0039] Figure 6 It is a stereogram of the example 5 of the waveguide port of the novel RF chip;

[0040] Figure 7 It is a stereogram of the example 6 of the waveguide port of the novel radio frequency chip;

[0041] Figure 8 It is a partial cutaway axial view of the input and output port structure of the waveguide antenna in the utility model;

[0042] Fig. 9 This is a three-dimensional diagram of the single-channel port design of the waveguide antenna in the utility model;

[0043] Fig.10 This is a bottom view of a single-channel port of a waveguide antenna in the utility model;

[0044] Fig.11 This is a schematic diagram of the utility model in which the plane is closely assembled and matched;

[0045] Fig.12 This is a schematic diagram of the assembly and matching of the split conductive stickers in the utility model;

[0046] Fig.13 This is a schematic diagram of the assembly and matching of the overall conductive sticker in the utility model;

[0047] Fig.14 This is a schematic diagram of the continuous dispensing assembly matching in the utility model;

[0048] Fig.15 This is a schematic diagram of the assembly and matching of the middle partition glue point of the utility model;

[0049] Fig.16 This is a schematic diagram of the gluing assembly and matching of the fixed slot in the utility model;

[0050] Fig.17 This is a cross-sectional view of the long side of the midplane of the utility model that closely matches the long side;

[0051] Fig.18 It is a cross-sectional view of the narrow side of the conductive sticker or the dispensing glue matching in the utility model;

[0052] Fig.19 This is a cross-sectional view of the narrow side of the fixing groove for gluing matching in the utility model.

[0053] Description of reference numerals:

[0054] Waveguide RF chip 1 Port upper part 211

[0055] Chip top surface 10 Antenna double ridge opening 212

[0056] Chip dual ridge port 11 Antenna port dual ridge 213

[0057] Chip single ridge port 12 Antenna single ridge opening 222

[0058] Chip rectangular port 13 Antenna port single ridge 223

[0059] Waveguide antenna port component 2 Antenna rectangular opening 232

[0060] Conductive bottom surface 20 Fixing groove 24

[0061] Antenna dual ridge port 21 split conductive sticker 31

[0062] Antenna single ridge port 22 Overall conductive patch 32

[0063] Antenna rectangular port 23 Conductive adhesive 33 DETAILED DESCRIPTION

[0064] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0065] The utility model discloses an input and output port structure of a waveguide antenna, which is used for connecting with an MMIC radio frequency chip integrating the waveguide input and output ports, so that signals are transmitted between the radio frequency chip and the waveguide antenna.

[0066] MMIC RF chip structure reference Figure 2-Figure 7 As shown, a chip is integrated with 4-16 or more channel waveguide ports, and the waveguide port size meets the transmission requirements of the 76-81GHz frequency band. The waveguide port adopts a double-ridge, single-ridge or rectangular structure. Among them, Figure 2 A three-dimensional image of a radio frequency chip including a dual-ridge port on the chip. Figure 3 A three-dimensional image of a radio frequency chip including a single ridge port of the chip. Figure 4 The figure is a three-dimensional image of an RF chip with rectangular ports. The top surface of the chip is a metallized surface, and the inner surface of the waveguide port is a metallized surface. The waveguide ports are arranged horizontally and vertically staggered along the long sides to ensure the isolation between the ports. Figure 5-Figure 7 As shown, the center spacing between adjacent ports is approximately 3-5 mm.

[0067] The input and output port structure of the waveguide antenna disclosed in the utility model includes a waveguide antenna port component 2, and the waveguide antenna port component 2 at least includes a combination of one or more of an antenna double-ridge port 21, an antenna single-ridge port 22, or an antenna rectangular port 23. The antenna double-ridge port 21, the antenna single-ridge port 22, and the antenna rectangular port 23 correspond to the chip double-ridge port 11, the chip single-ridge port 12, and the chip rectangular port 13 of the waveguide radio frequency chip, respectively. The corresponding waveguide antenna port component is selected according to the structure of the radio frequency chip port.

[0068] The conductive bottom surface 20 of the waveguide antenna port component 2 is tightly matched with the chip top surface of the RF chip to maintain a good electrical connection. The antenna double-ridge port 21, the antenna single-ridge port 22, or the antenna rectangular port 23 penetrates the conductive bottom surface 20 downward, and is respectively arranged corresponding to the chip double-ridge port 11, the chip single-ridge port 12, or the chip rectangular port 13 on the RF chip. The antenna double-ridge port 21, the antenna single-ridge port 22, or the antenna rectangular port 23 penetrates the waveguide antenna port component 2 upward, and then connects with a suitable waveguide transmission line and a waveguide antenna array to form a complete antenna channel.

[0069] The three waveguide antenna port components 2 of different shapes are further described below.

[0070] The antenna double-ridge port 21 includes a port upper portion 211 and an antenna double-ridge opening 212, wherein the size of the port upper portion 211 is 2.25-2.7mm in length and 0.8-1.2mm in width. The size of the antenna double-ridge opening 212 is 2.3-3.0mm in length and 1.2-1.7mm in width. The length and width of the antenna double-ridge opening 212 are respectively greater than the length and width of the port upper portion 211. The antenna double-ridge opening 212 is reduced in size in the middle of the two long sides to form an antenna port double ridge 213; in a preferred embodiment, the width of the gap between the antenna port double ridges 213 is equal to the width of the port upper portion 211; the length of the antenna port double ridge 213 is 0.4-0.8mm. The antenna double-ridge opening 212 is aligned with the center of the port upper portion 211, and is aligned with the center of the chip double-ridge port 11.

[0071] The antenna single ridge port 22 includes a port upper portion 211 and an antenna single ridge opening 222. The size of the port upper portion 211 is 2.25-2.7mm in length and 0.8-1.2mm in width. The size of the antenna single ridge opening 222 is 2.5-3.2mm in length and 1.2-1.7mm in width. The length and width of the antenna single ridge opening 222 are respectively greater than the length and width of the port upper portion 211. The antenna single ridge opening 222 is reduced in size in the middle of one long side to form an antenna port single ridge 223; the gap width between the antenna port single ridge 223 and the opposite long side is equal to the width of the port upper portion 211; the length of the antenna port single ridge 223 is 0.4-0.8mm. The antenna single ridge opening 222 is aligned with the center of the port upper part 211, or the center line of the port upper part 211 and the center line of the antenna single ridge opening 222 are offset in the direction away from the antenna port single ridge 223, and the antenna single ridge opening 222 is aligned with the center of the chip single ridge port 12; the antenna port single ridge 223 and the ridge of the chip single ridge port 12 are on the same side.

[0072] The antenna rectangular port 23 includes a port upper portion 211 and an antenna rectangular opening 232. The size of the port upper portion 211 is 2.25-2.7 mm long and 0.8-1.2 mm wide. The size of the antenna rectangular opening 232 is 2.4-3.2 mm long and 1.2-1.8 mm wide. The length and width of the antenna rectangular opening 232 are respectively greater than the length and width of the port upper portion 211. The port upper portion 211 is aligned with the center of the antenna double ridge opening 222 and is aligned with the center of the chip rectangular port 13.

[0073] The heights of the antenna double-ridge opening 212 , the antenna single-ridge opening 222 , and the antenna rectangular opening 232 are 0.8-1.8 mm.

[0074] The waveguide antenna port component 2 includes a combination of multiple antenna double-ridge ports 21, or antenna single-ridge ports 22, or antenna rectangular ports 23. The number of ports is the same as the number of ports of the matching waveguide RF chip, and the positions and long side directions correspond one to one. The waveguide antenna port component 2 is a component of the waveguide antenna, which can be manufactured separately and then installed on the waveguide antenna, or is a structural part of the waveguide antenna. The waveguide antenna port component 2 is made of metal, or a non-metallic material with a metallized surface (such as plastic, etc.).

[0075] The matching assembly method of the waveguide antenna port component 2 and the waveguide radio frequency chip 1 includes any one or any combination of the following:

[0076] Flat surface close assembly matching method: Fig.11As shown, the waveguide antenna including the waveguide antenna port component 2 is assembled onto the PCB mainboard containing the waveguide RF chip 1 by means of fasteners (such as clips and bolts), and the conductive bottom surface 20 and the chip top surface 10 are kept in close contact; structural features such as locating pins can be appropriately added between the waveguide antenna and the PCB mainboard to improve the alignment between the waveguide antenna port component 2 and the port of the waveguide RF chip 1, thereby reducing transmission losses.

[0077] A conductive material installation area is provided on the conductive bottom surface 20 , in which a conductive material for maintaining electrical connection between the conductive bottom surface 20 and the chip top surface of the RF chip is installed. The conductive material may be a split conductive sticker 31 , an integral conductive sticker 32 and a conductive adhesive 33 .

[0078] Conductive sticker assembly and matching method: Fig.12 As shown, a split conductive sticker 31 is pasted on each of the two sides of the long side of the antenna waveguide port. The split conductive sticker 31 is a conductive material with a soft substrate containing conductive microparticles (such as nanosilver particles, carbon powder, etc.), with a thickness of 0.2-0.6mm, a single-sided adhesive, and is cut into a single piece with a length of 1.8-2.5mm and a width of 0.5-1mm; the edge of the split conductive sticker 31 close to the antenna waveguide port is ±0.2mm away from the antenna waveguide port. This positioning tolerance can be achieved through appropriate auxiliary positioning tooling, which is manufacturing feasible, and an automated positioning and pasting process can also be used to improve production efficiency. The split conductive sticker 31 is pasted on the conductive bottom surface 20. After the antenna is assembled, it is pressed and matched with the chip top surface 10 to maintain a good electrical connection between the conductive bottom surface 20 and the chip top surface 10. In this embodiment, the conductive material installation area is a discontinuous area.

[0079] In a preferred embodiment, Fig.13 As shown, the conductive paste material of the same material and thickness can be cut into a size sufficient to cover multiple waveguide ports, and a hole group with the same shape and arrangement as the antenna waveguide port can be cut in the middle to form an integral conductive paste 32; the integral conductive paste 32 has a single-sided adhesive backing and is pasted on the conductive bottom surface 20; after the antenna is assembled, the integral conductive paste 32 is pressed and matched with the chip top surface 10 to maintain a good electrical connection between the conductive bottom surface 20 and the chip top surface 10; structural features such as positioning pins can be appropriately added between the waveguide antenna and the integral conductive paste 32 to improve the alignment between the waveguide antenna port component 2 and the integral conductive paste 32 and reduce transmission loss. In this embodiment, the conductive material installation area is a continuous area.

[0080] Glue dispensing assembly matching method: Fig.14 As shown in FIG. 1 , conductive glue 33 is applied on both sides of the long side of the antenna waveguide port; the conductive glue 33 is a conductive material containing conductive microparticles (such as nano silver particles, carbon powder, etc.) on a soft substrate, and is applied on the antenna waveguide port through a glue application process. Fig.14The long strip area shown is 1.8-2.5mm long and 0.5-1mm wide; the conductive adhesive 33 is cured and attached to the conductive bottom surface 20 through curing processes such as room temperature storage, high temperature storage or ultraviolet irradiation, and the height after curing is 0.2-0.6mm; the edge of the conductive adhesive 33 close to the antenna waveguide port is 0-0.2mm away from the antenna waveguide port; after the antenna is assembled, the conductive adhesive 33 is pressed tightly against the chip top surface 10, so that the conductive bottom surface 20 and the chip top surface 10 maintain good electrical connection.

[0081] In a preferred embodiment, Fig.14 The long strips of dispensing area shown are extended and connected one by one to form a continuous dispensing line; for different dispensing processes and equipment, continuous dispensing lines can improve production efficiency. This line change will not affect the transmission performance, as long as it is guaranteed Fig.14 The long strip area shown is covered with conductive adhesive. In this embodiment, the conductive material installation area is a continuous area.

[0082] In a preferred embodiment, Fig.15 As shown, a single-point glue dispensing method can be used instead of a long strip glue dispensing method. The single-point glue dispensing has a single point diameter of 0.5-0.8mm, and is arranged symmetrically along the center on both sides of the long side of the antenna waveguide port. The number is 3-5, and the height after curing is 0.2-0.6mm; the distance between the edge of the conductive glue 33 close to the antenna waveguide port and the antenna waveguide port is 0-0.2mm; after the antenna is assembled, the conductive glue 33 is pressed and matched with the chip top surface 10, so that the conductive bottom surface 20 and the chip top surface 10 maintain good electrical connection. In this embodiment, the conductive material installation area is composed of multiple sub-areas spaced apart.

[0083] In a preferred embodiment, Fig.16 As shown, around the antenna waveguide port, on the conductive bottom surface 20, a fixing groove 24 is provided around the waveguide port; the fixing groove 24 has a width of 0.3-0.6 mm and a depth of 0.3-0.6 mm; the fixing groove 24 can be one circle or multiple circles; glue is dispensed in the fixing groove 24, and the glue dispensed amount can fill the entire groove, and the overflow part meets the requirements. Fig.14 or Fig.15 shape requirements; after curing, the height beyond the conductive bottom surface is 0.2-0.6mm; the distance between the edge of the conductive adhesive 33 close to the antenna waveguide port and the antenna waveguide port is 0-0.2mm; after the antenna is assembled, the conductive adhesive 33 is pressed and matched with the chip top surface 10, so that the conductive bottom surface 20 and the chip top surface 10 maintain good electrical connection. In this embodiment, the conductive material installation area is a continuous area.

[0084] In the surrounding area of ​​the waveguide antenna close to the waveguide antenna port component 2, fastening methods such as snaps and bolt connections can be appropriately added to improve the tight fit between the conductive bottom surface 20 and the chip top surface 10, which can further reduce transmission losses and improve isolation between ports.

[0085] The utility model also provides a waveguide antenna, which includes the input and output port structure of the waveguide antenna. The utility model also provides a car, which includes the waveguide antenna.

[0086] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0087] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. An input and output port structure of a waveguide antenna, characterized in that: include: Waveguide antenna port component (2); One end of the waveguide antenna port component (2) is used to connect to the radio frequency chip. One or more antenna waveguide ports are arranged through the waveguide antenna port component (2). The end of the antenna waveguide port close to the radio frequency chip is arranged to correspond to the position of the signal port of the radio frequency chip and is arranged to match the shape of the signal port of the radio frequency chip. The other end of the antenna waveguide port is a signal output / input end.

2. The input and output port structure of the waveguide antenna according to claim 1, characterized in that: The antenna waveguide port includes an antenna double-ridge port (21), an antenna single-ridge port (22) and an antenna rectangular port (23); The waveguide antenna port component (2) is provided with any one or more of an antenna double-ridge port (21), an antenna single-ridge port (22) and an antenna rectangular port (23).

3. The input and output port structure of the waveguide antenna according to claim 2, characterized in that: The antenna double-ridge port (21) comprises a port upper portion (211) and an antenna double-ridge opening (212) which are connected to each other, and the antenna double-ridge opening (212) is used to connect a radio frequency chip; The antenna double ridge opening (212) shrinks inwards in the middle of the two long sides to form an antenna port double ridge (213), the gap between the antenna port double ridge (213) is equal to the width of the port upper part (211), and the antenna double ridge opening (212) is aligned with the center of the port upper part (211) and the center of the radio frequency chip signal port.

4. The input and output port structure of the waveguide antenna according to claim 2, characterized in that: The antenna single-ridge port (22) comprises a port upper portion (211) and an antenna single-ridge opening (222) connected to each other, and the antenna single-ridge opening (222) is used to connect a radio frequency chip; The antenna single ridge opening (222) shrinks inwards in the middle of one long side to form an antenna port single ridge (223); the gap between the antenna port single ridge (223) and the other long side of the antenna single ridge opening (222) is equal to the width of the port upper part (211); the antenna single ridge opening (222) and the port upper part (211) are aligned in center, and are aligned in center with the radio frequency chip signal port; Alternatively, the center line of the upper portion (211) of the port and the center line of the antenna single ridge opening (222) are offset in a direction away from the antenna port single ridge (223), and the antenna single ridge opening (222) is aligned with the center of the RF chip signal port; the antenna port single ridge (223) and the ridge of the chip single ridge port are on the same side.

5. The input and output port structure of the waveguide antenna according to claim 2, characterized in that: The antenna rectangular port (23) comprises a port upper portion (211) and an antenna rectangular opening (232) which are connected to each other, and the antenna rectangular opening (232) is used to connect a radio frequency chip; The end face size of the antenna rectangular opening (232) is larger than the end face size of the port upper portion (211), and the antenna rectangular opening (232) is aligned with the center of the port upper portion (211) and is also aligned with the center of the radio frequency chip signal port.

6. The input and output port structure of the waveguide antenna according to claim 1, characterized in that: The antenna waveguide ports are arranged on the waveguide antenna port component (2) structure in a staggered arrangement according to the long sides in the horizontal and vertical intervals.

7. The input and output port structure of the waveguide antenna according to claim 1, characterized in that: The waveguide antenna port component (2) comprises a conductive bottom surface (20), and the conductive bottom surface (20) is an end surface of the waveguide antenna port component (2) close to the radio frequency chip; The waveguide antenna port component (2) is tightly connected to a PCB mainboard containing a radio frequency chip, and the conductive bottom surface (20) is tightly matched with the chip top surface of the radio frequency chip.

8. The input and output port structure of the waveguide antenna according to claim 1, characterized in that: The waveguide antenna port component (2) comprises a conductive bottom surface (20), the conductive bottom surface (20) being an end surface of the waveguide antenna port component (2) close to the radio frequency chip, and a conductive material installation area is provided on the conductive bottom surface (20); The conductive material installation area is distributed on both sides of the long side of the antenna waveguide port; Or, the conductive material installation area is distributed in an area other than the antenna waveguide port on the conductive bottom surface (20); Or, the conductive material installation area is one or more circles of fixing grooves (24) arranged around the antenna waveguide port; The conductive material installation area is a continuous area, or is composed of a plurality of sub-areas spaced apart and combined.

9. A waveguide antenna, characterized in that: An input and output port structure comprising the waveguide antenna according to any one of claims 1 to 8.

10. An automobile, characterized in that: Includes the waveguide antenna as claimed in claim 9.

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