Waveguide antenna port with isolation structure and waveguide antenna

Abstract

The utility model provides a waveguide antenna port with an isolation structure and a waveguide antenna, and the waveguide antenna port comprises a waveguide antenna port which comprises an upper connection port and a matching port; the upper connecting port is communicated with the matching port, the upper connecting port is used for connecting a waveguide channel, and the matching port is used for connecting a chip waveguide port on a radio frequency chip; separating walls are arranged on the two sides of the matching port, and the inner walls of the separating walls are flush with the inner wall of the matching port. According to the utility model, the isolation wall is arranged on the waveguide antenna port, so that the transmission efficiency is ensured, the relatively high port isolation degree is also ensured, a certain height gap is allowed to exist between the waveguide antenna port and the waveguide chip port, and the reduction of the manufacturing precision is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waveguide antenna, specifically, a waveguide antenna port with isolation structure and waveguide antenna. BACKGROUND

[0002] With the development of automobile radar to the technical direction of high gain and high resolution, waveguide antennas are widely researched and gradually applied.

[0003] In the application of vehicle-mounted millimeter wave radar, waveguide antennas are paid more and more attention due to their low loss, high isolation and other advantages. Various mainstream radio frequency chip manufacturers have gradually launched a new generation of MMIC radio frequency chips with integrated waveguide input and output ports. The chip waveguide port for transmitting or receiving signals is provided on the radio frequency chip, including a chip double-ridge port, a chip single-ridge port or a chip rectangular port. The port structure is provided on the waveguide antenna to match and connect with the chip waveguide interface, realizing the transmission of signals from the radio frequency chip to the waveguide antenna. However, the existing transmission structure has the defect of low port isolation.

[0004] Therefore, a new waveguide antenna port is needed to improve the signal transmission effect. SUMMARY

[0005] In view of the defects in the prior art, the utility model aims to provide a waveguide antenna port with isolation structure and waveguide antenna.

[0006] According to the utility model provides a waveguide antenna port with isolation structure, including: waveguide antenna port, the waveguide antenna port includes upper connection port and matching port;

[0007] The upper connection port is in communication with the matching port, the upper connection port is used for connecting the waveguide channel, and the matching port is used for connecting the chip waveguide port on the radio frequency chip;

[0008] Isolation walls are arranged on both sides of the matching port, and the inner wall of the isolation wall is flush with the inner wall of the matching port.

[0009] Preferably, the length and width dimensions of the matching port are greater than the length and width dimensions of the upper connection port.

[0010] Preferably, the isolation wall protrudes inward to form a ridge in the middle part beyond the inner wall.

[0011] Preferably, the inner wall of the ridge is flush with the inner wall of the upper connection port.

[0012] Preferably, ridges are arranged on both isolation walls or one of the isolation walls, and the number and position of the ridges correspond to the structure of the chip waveguide port.

[0013] Preferably, the top of the ridge is flush with the upper end of the matching port, and the bottom of the ridge is flush with the bottom of the partition wall.

[0014] Preferably, the height of the partition wall is 1 / 4 of the working wavelength, and the length is 1 / 4 of the working wavelength.

[0015] According to the waveguide antenna provided by the utility model, the waveguide antenna port with the isolation structure is provided with one or more, the multiple ports are arranged in horizontal and vertical intervals, and the polarization directions of the adjacent ports are perpendicular to each other.

[0016] Preferably, the waveguide antenna further comprises a stopband unit, the stopband unit is arranged at the periphery of the matching port and between the adjacent two waveguide antenna ports, and the height of the stopband unit is the same as that of the partition wall.

[0017] According to the automobile provided by the utility model, the waveguide antenna is provided.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1、The utility model discloses a partition wall is arranged on the waveguide antenna port, guarantees transmission efficiency, guarantees higher port isolation degree, and allows that the waveguide antenna port and the waveguide chip port can have certain height gap, and it is favorable to reduce manufacturing precision.

[0020] 2、The waveguide antenna structure design size is small and exquisite, satisfies the space demand of multiple port arrangement, and the stopband unit (such as cylinder, vertical wall, etc.) of proper size and quantity is arranged between the partition walls, and the port isolation degree is further improved.

[0021] 3、The utility model discloses a partition wall is arranged on the matching port, and the same number and direction of the ridge of the chip waveguide port ridge are arranged on the partition wall, and the double ridge, single ridge or rectangular transition to rectangular shape is used, and the matching requirement with the radio frequency chip waveguide port is satisfied.

[0022] 4、The utility model discloses that the width of the upper connecting port is consistent with the double ridge or single ridge gap width of the matching port, and the manufacturing feasibility is high by using numerical control processing or injection molding process. DETAILED DESCRIPTION

[0023] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings:

[0024] Figure 1 It is a perspective view of the waveguide antenna port in the utility model.

[0025] Figure 2 It is a waveguide antenna port (double ridge) perspective exploded view of the utility model;

[0026] Figure 3 It is a waveguide antenna port (single ridge) perspective exploded view of the utility model;

[0027] Figure 4 It is a waveguide antenna port (rectangular) perspective exploded view of the utility model;

[0028] Figure 5 It is a waveguide antenna port bottom view of the utility model;

[0029] Figure 6 It is a waveguide antenna port vertical section view (section A) of the utility model;

[0030] Figure 7 It is a waveguide antenna port isolation structure perspective exploded view of the utility model.

[0031] Explanation of reference signs:

[0032] DETAILED DESCRIPTION

[0033] The utility model will be explained in detail in combination with specific embodiments. The following embodiments will help the person 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 ordinary skilled in the art, on the premise of not departing from the utility model concept, can make a number of changes and improvements. These all belong to the protection scope of the utility model.

[0034] The utility model discloses a waveguide antenna port with isolation structure, refer to Figure 1 As shown, comprising: waveguide antenna port 1 and the waveguide chip port 2 of butt joint with it. Waveguide antenna port 1 contains upper connection port 11, matching port 12 and isolation wall 13. Waveguide chip port 2 contains chip waveguide cavity 21 and chip waveguide ridge 22.

[0035] Signal channel is set through in waveguide antenna port 1, and the upper port of signal channel is upper connection port 11, and upper connection port 11 is connected waveguide channel upwards until radiating antenna array. The lower port of signal channel is matching port 12, and the length-width size of matching port 12 is greater than the length-width size of upper connection port 11.

[0036] Two isolation walls 13 are arranged on the two outer sides of the long side below the matching port 12; the inner wall of the isolation wall 13 is basically flush with the matching port 12, and the inner wall protrudes inward in the middle part to form a ridge 131; the projection surface of the ridge 131 is contained in the projection surface of the matching port 12. The upward height of the ridge is the same as the height of the matching port 12, and the downward height is the same as the height of the isolation wall 13.

[0037] The waveguide chip port 2 comprises a chip waveguide cavity 21 and a plurality of chip waveguide ridges 22. In some waveguide chip ports 2, the waveguide chip port 2 comprises one chip waveguide ridge 22. In some waveguide chip ports 2, the waveguide chip port 2 comprises two chip waveguide ridges 22. In some waveguide chip ports 2, the waveguide chip port 2 does not comprise a chip waveguide ridge 22. The waveguide antenna port 1 is aligned with the waveguide chip port 2.

[0038] The ridge 131 is arranged in correspondence with the chip waveguide ridge 22, that is, the number of ridges 131 is arranged in correspondence with the number of chip waveguide ridges 22 and the position of the ridge 131 is arranged in correspondence with the position of the chip waveguide ridge 22. Referring to Figures 2-4 It is shown that the double-ridge structure, the single-ridge structure and the rectangular structure are arranged. When two ridges 131 are arranged, the width of the upper connection port 11 of the waveguide antenna port is consistent with the gap width of the double-ridge 131 of the matching port.

[0039] Referring to Figure 5 and Figure 6 It is shown that the upper connection port 11 takes the waveguide length and width dimensions of the working wavelength, and the height is adjusted according to actual requirements; the matching port 12 has larger length and width dimensions than the upper connection port 11, and the height. The height of the isolation wall 13 is about 1 / 4 of the working wavelength, and the length is about 1 / 4 of the working wavelength. The upward height of the ridge 131 is the same as the height of the matching port 12, and the downward height is the same as the height of the isolation wall 13, that is, the height of the ridge 131 in the upward and downward directions is equal to the sum of the height of the matching port 12 and the height of the isolation wall 13, and the inward protruding height and the length of the protrusion to both sides of the ridge 131 are adjusted according to the matching condition; the number of ridges 131 is the same as the number of chip waveguide ridges 22 contained in the corresponding used waveguide chip port 2, and is located on the same side.

[0040] The arrangement of the ridge 131 makes the matching port 12 form a double-ridge, a single-ridge or a rectangular shape similar to the waveguide chip port 2, which is beneficial to improve the matching degree between the ports. The size of the isolation wall 13 is arranged to form a stop band, so that the top surface of the isolation wall 13 and the top surface of the waveguide chip port 2 can be in contact or maintain a certain height gap, and still maintain a certain matching performance.

[0041] The utility model discloses still disclose a kind of waveguide antennas, referring to Figure 7As shown, the waveguide antenna is provided with a plurality of waveguide antenna ports, and when arranged in multiple ports, the port-to-port matching structure can realize small and compact arrangement.

[0042] When arranged in multiple ports, the blocking unit 14 can be appropriately increased; the blocking unit 14 can be cylindrical, square column, prism, strip, etc.

[0043] The utility model discloses still a kind of car, which uses the above waveguide antenna.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0045] The specific embodiments of the utility model have been described above. It should be understood that the utility model 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 essential content of the utility model. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A waveguide antenna port with isolation structure, characterized by, Including: Waveguide antenna port (1), the waveguide antenna port (1) includes upper connection port (11) and matching port (12); The upper connection port (11) is arranged in communication with the matching port (12), the upper connection port (11) is used for connecting waveguide channel, and the matching port (12) is used for connecting chip waveguide port (2) on radio frequency chip; Isolation wall (13) is arranged on both sides of the matching port (12), and the inner wall of the isolation wall (13) is arranged flush with the inner wall of the matching port (12).

2. The waveguide antenna port with isolation structure according to claim 1, wherein, The length and width of the matching port (12) are greater than the length and width of the upper connection port (11).

3. The waveguide antenna port with isolation structure of claim 1, wherein, The isolation wall (13) protrudes inward to form a ridge (131) at the middle part beyond the inner wall.

4. The waveguide antenna port with isolation structure according to claim 3, wherein, The inner wall of the ridge (131) is arranged flush with the inner wall of the upper connection port (11).

5. The waveguide antenna port with isolation structure according to claim 3, wherein, Ridges (131) are arranged on both isolation walls (13) or one of the isolation walls (13), and the number and position of the ridges (131) correspond to the structure of the chip waveguide port (2).

6. The waveguide antenna port with isolation structure of claim 3, wherein, The top of the ridge (131) is arranged flush with the upper end surface of the matching port (12), and the bottom of the ridge (131) is arranged flush with the bottom of the isolation wall (13).

7. The waveguide antenna port with isolation structure of claim 1, wherein, The height of the isolation wall (13) is 1 / 4 of the working wavelength, and the length is 1 / 4 of the working wavelength.

8. A waveguide antenna, characterized by The waveguide antenna port with isolation structure of any one of claims 1-7 is arranged, and the number of the waveguide antenna ports with isolation structure is one or more, the plurality of ports are arranged in horizontal and vertical intervals, and the polarization directions of adjacent ports are perpendicular to each other.

9. The waveguide antenna of claim 8, wherein, Further comprising a stopband unit (14), the stopband unit (14) is arranged on the periphery of the matching port (12), and is arranged between adjacent two waveguide antenna ports (1), and the height of the stopband unit (14) is the same as the height of the isolation wall (13).

10. An automobile characterized by comprising: The waveguide antenna of claim 9 is included.

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