Millimeter wave radar PCB of antenna area Hoz

Abstract

The utility model discloses a millimeter wave radar PCB of an antenna area Hoz, and belongs to the technical field of PCBs. The millimeter wave radar PCB comprises n layers of circuit boards, wherein n is an even number; the n layers of circuit boards respectively form antenna radio frequency layers and digital signal control layers, the L1-L2 layers are the antenna radio frequency layers, and the L3-Ln layers are the digital signal control layers; the antenna radio frequency layer comprises an antenna pattern, the outer EA position of the antenna pattern is provided with a triangular protruding part protruding outwards, and the inner EA position of the antenna pattern is provided with a triangular notch part recessed inwards. The antenna has the beneficial effects that the 45-degree triangle design is additionally arranged at the outer EA position of the antenna pattern, 25 microns are added outwards, the 45-degree triangle design is designed at the inner EA position, and 25 microns are cut inwards, so that the precision of the feeder line, the bonding pad and the EA is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of PCBs, and specifically relates to a millimeter-wave radar PCB in the Hoz of the antenna area. Background Art

[0002] Millimeter-wave radar, which refers to a radar operating in the millimeter-wave frequency band, can be used as a non-contact sensing technology for detecting objects and providing information about the distance, speed, and angle of the objects. It is widely used in various fields such as detection and sensing technologies. The main frequency points used in millimeter-wave products are 24 GHz, 60 GHz, 77 - 79 GHz, etc. The upstream and downstream industrial chains of the 24 GHz frequency band are mature and the cost is relatively low, mainly applied in the consumer market and industrial fields. The 60 GHz frequency band has a bandwidth of 4 GHz. Currently, chip manufacturers mainly develop millimeter-wave radar chips using CMOS technology, which are widely used in industrial and Internet of Things fields. In the "Interim Provisions on Radio Management of Automotive Radars" issued by the Ministry of Industry and Information Technology in 2021, the 76 - 79 GHz frequency band is planned for automotive radars and restricts the use of this frequency band by other ground radars. Automotive-grade millimeter-wave radar products have become the mainstream sensor components in the automotive field, and subsequent industrial-grade 60 GHz millimeter-wave radar products will become the mainstream. Millimeter-wave radar was developed abroad in the 1940s and entered China in 2013, and then entered a rapid development stage in our country.

[0003] However, it is difficult to ensure the accuracy of the feeder, pad, and EA on the millimeter-wave PCB in the Hoz of the existing antenna area. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a millimeter-wave radar PCB in the Hoz of the antenna area, which ensures the accuracy of the feeder, pad, and EA by respectively providing a triangular protrusion and a triangular notch at the outer EA position and the inner EA position of the antenna, thereby solving at least one technical problem involved in the background art.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] The embodiments of this application provide a millimeter-wave radar PCB in the Hoz of the antenna area, including n layers of circuit boards, where n is an even number; the n layers of circuit boards respectively form an antenna radio frequency layer and a digital signal control layer. Among them, the L1 - L2 layers are the antenna radio frequency layer, and the L3 - Ln layers are the digital signal control layer; the antenna radio frequency layer includes an antenna pattern, and a triangular protrusion protruding outward is provided at the outer EA position of the antenna pattern, and a triangular notch recessed inward is provided at the inner EA position.

[0007] Optionally, n = 8.

[0008] Optionally, the triangular protrusion is a 45° triangular protrusion.

[0009] Optionally, the triangular notch is a 45° triangular notch.

[0010] Optionally, the triangular protrusion protrudes outward by 25 μm.

[0011] Optionally, the triangular notch is recessed inward by 25 μm.

[0012] Optionally, it further includes laser holes penetrating through the L1-L2 layers.

[0013] Optionally, it further includes disk holes and through holes penetrating through the L1-L8 layers.

[0014] The present application has the following beneficial effects compared with the prior art:

[0015] By adding a 45° triangular design at the outer EA position outside the antenna pattern, compensating 25 μm outward, and designing a 45° triangle at the inner EA position to cut 25 μm inward, the accuracy of the feeder, pad, and EA is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0017] Figure 1 is a schematic cross-sectional structure diagram of a millimeter-wave radar PCB in the antenna area Hoz provided by the present invention;

[0018] Figure 2 is a schematic structural diagram of the antenna EA position of the millimeter-wave radar PCB in the antenna area Hoz provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0020] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0021] Please refer to Figure 1 and Figure 2 As shown, the embodiments of this application provide a millimeter-wave radar PCB for the antenna area Hoz, which includes n layers of circuit boards, and n is an even number.

[0022] In a specific embodiment, n = 8.

[0023] The n layers of the circuit boards respectively form an antenna radio frequency layer and a digital signal control layer. Among them, the L1-L2 layers are the antenna radio frequency layer 1, and the L3-Ln layers are the digital signal control layer 2.

[0024] The antenna radio frequency layer 1 includes an antenna pattern. At the outer EA position of the antenna pattern, there is a triangular protrusion 11 protruding outward, and at the inner EA position, there is a triangular notch 12 recessed inward.

[0025] Specifically, the triangular protrusion 11 is a 45° triangular protrusion, and the triangular notch 12 is a 45° triangular notch.

[0026] Furthermore, the triangular protrusion 11 protrudes outward by 25um, and the triangular notch 12 is recessed inward by 25um.

[0027] The millimeter-wave radar PCB further includes a laser hole 3 penetrating the L1-L2 layers, and a via-in-pad 4 and a via 5 penetrating the L1-L8 layers.

[0028] The laser hole 3 is drilled by a laser method, and the resin and glass fiber of the non-conductive part of the hole wall are metallized.

[0029] The via-in-pad 4 and the via 5 are subjected to via filling treatment with resin.

[0030] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0031] In addition, it should be pointed out that the scope of the methods and systems in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0032] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A millimeter wave radar PCB with an antenna area Hoz, characterized in that: It comprises n layers of circuit boards, where n is an even number; the n layers of the circuit boards respectively form an antenna RF layer and a digital signal control layer, wherein layers L1-L2 are the antenna RF layer, and layers L3-Ln are the digital signal control layer; the antenna RF layer comprises an antenna pattern, and an outwardly protruding triangular protrusion is provided at an outer EA position of the antenna pattern, and an inwardly recessed triangular notch is provided at an inner EA position.

2. The millimeter wave radar PCB of the antenna area Hoz according to claim 1, characterized in that: Said n=8.

3. The millimeter wave radar PCB of the antenna area Hoz according to claim 1, characterized in that: The triangular protrusion is a 45° triangular protrusion.

4. The millimeter wave radar PCB of the antenna area Hoz according to claim 1, characterized in that: The triangular notch is a 45° triangular notch.

5. The millimeter wave radar PCB of the antenna area Hoz according to claim 1 or 3, characterized in that: The triangular protrusion protrudes outward by 25 um.

6. The millimeter wave radar PCB of the antenna area Hoz according to claim 1 or 4, characterized in that: The triangular notch is recessed inwardly by 25 um.

7. The millimeter wave radar PCB of the antenna area Hoz according to claim 1, characterized in that: Also included is a laser hole that penetrates the L1-L2 layer.

8. The millimeter wave radar PCB of the antenna area Hoz according to claim 1, characterized in that: Also included are vias in pads and through-holes that penetrate the L1-L8 layers.

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