CN215680963U

CN215680963U - Conduction structure of waveguide and circuit board

Info

Publication number: CN215680963U
Application number: CN202121851889.6U
Authority: CN
Inventors: 张峰会
Original assignee: Suzhou Zhongke Zhihao Technology Co ltd
Current assignee: Suzhou Zhongke Zhihao Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-28
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a conducting structure of a waveguide and a circuit board, which comprises a panel and a circuit board, wherein the panel is provided with a plurality of conducting holes; the panel is provided with a waveguide hole penetrating through the panel; the surface of the circuit board is provided with a waveguide groove and a transmission groove, and an antenna is arranged along the transmission groove; one end of the antenna extends into the waveguide groove, and the other end of the antenna is connected with a receiving and transmitting assembly on the circuit board; the surface of the circuit board is tightly pressed on the back of the panel, and the waveguide groove is aligned with one end opening of the waveguide hole; the antenna and the transceiving component are integrated on the same circuit board, so that the volume of the waveguide antenna is greatly reduced, and the waveguide antenna is convenient to install; in addition, a pressing block can be arranged on one side, far away from the panel, of the circuit board, a resonant cavity is arranged on the pressing block, the resonant cavity is aligned with one side, far away from the waveguide hole, of the waveguide groove, and millimeter wave signals received or sent by the antenna can be enhanced through resonance.

Description

Conduction structure of waveguide and circuit board

Technical Field

The utility model relates to the technical field of waveguide antennas, in particular to a conducting structure of a waveguide and a circuit board.

Background

Millimeter wave (millimeter wave) is an electromagnetic wave having a wavelength of 1 to 10 mm, and is located in a wavelength range where microwave and far-infrared waves overlap, and thus has the characteristics of both the two types of spectra. With the rapid development of millimeter wave radars and communication systems, millimeter wave antennas increasingly become the hot antenna form of current research. On the one hand, in the civil field, the millimeter wave vehicle-mounted radar can effectively improve the safety of a driver and the mobility of a vehicle. On the other hand, in the military field, the millimeter wave has the characteristics of wide working bandwidth, high detection/imaging resolution, strong confidentiality and anti-interference performance and the like.

However, in the current millimeter wave antenna, the antenna and the transceiver module are usually separately arranged and need to be installed together for use, which increases the volume of the millimeter wave antenna, and has complex structure and complex installation.

SUMMERY OF THE UTILITY MODEL

Based on the above description, the utility model provides a conducting structure of a waveguide and a circuit board, and the antenna and the transceiving component are integrated on the same circuit board, so that the volume of the waveguide antenna is greatly reduced, and the waveguide antenna is convenient to install.

The technical scheme for solving the technical problems is as follows: a conducting structure of a waveguide and a circuit board comprises a panel and the circuit board; the panel is provided with a waveguide hole penetrating through the panel; the surface of the circuit board is provided with a waveguide groove and a transmission groove, and an antenna is arranged along the transmission groove; one end of the antenna extends into the waveguide groove, and the other end of the antenna is connected with a receiving and transmitting assembly on the circuit board; the surface of the circuit board is tightly pressed on the back surface of the panel, and the waveguide groove is aligned with one end opening of the waveguide hole.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the opening of the waveguide hole has the same shape and size as the waveguide groove.

Further, the circuit board comprises a metal layer and a base layer, and the waveguide slot, the transmission slot and the antenna are etched in the metal layer.

Further, the conducting structure further comprises a pressing block; the base layer is provided with a through hole; the pressing block is inserted into the through hole and is tightly attached to the metal layer; the pressing block is provided with a resonant cavity, and the resonant cavity is aligned with the waveguide groove.

Further, the shape and size of the opening of the resonant cavity are the same as those of the waveguide groove.

Furthermore, the depth of the resonant cavity is 0.4 mm-0.9 mm.

Furthermore, the thickness of the metal layer is 0.15 mm-0.35 mm.

Furthermore, a guide groove matched with the transmission groove is formed in the panel.

Furthermore, a boss is arranged on the back face of the panel, and the circuit board is pressed on the boss.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

1. the antenna and the transceiving component are integrated on the same circuit board, so that the volume of the waveguide antenna is greatly reduced, and the waveguide antenna is convenient to install;

2. the resonant cavity is arranged on the pressing block, and millimeter wave signals received or sent by the antenna can be enhanced through resonance.

Drawings

Fig. 1 is a schematic structural diagram of a conducting structure of a waveguide and a circuit board according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a perspective view of FIG. 1;

FIG. 4 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another view of the circuit board according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a panel according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a briquette according to an embodiment of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a circuit board; 11. a base layer; 12. a metal layer; 13. a waveguide groove; 14. a transmission slot; 15. an antenna; 16. a through hole; 2. a panel; 21. a boss; 22. a waveguide aperture; 23. a guide groove; 3. briquetting; 31. a resonant cavity is provided.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.

A conducting structure of a waveguide and a circuit board is shown in figures 1, 2 and 3 and comprises a circuit board 1, a panel 2 and a pressing block 3. The panel 2 is used for sending out millimeter wave signals along a straight line or receiving reflected millimeter wave signals. The circuit board 1 is provided with a transceiver module for controlling the receiving and sending of millimeter wave signals. The pressure block 3 is provided with a resonant cavity 31, and the intensity of the millimeter wave signal is enhanced through the resonance effect.

As shown in fig. 4 and 5, the circuit board 1 is formed by stacking a base layer 11 and a metal layer 12. The base layer 11 has a multi-layer structure, which is not related to the technical solution of the present invention, and therefore, the details thereof are not described herein. The metal layer 12 is used for etching a circuit and has a thickness of only 0.15mm to 0.35 mm.

The base layer 11 has a through hole 16 opened therein, and the waveguide groove 13 is etched in the metal layer 12 at the through hole 16. The metal layer 12 is also etched with a transmission slot 14, one end of the transmission slot 14 is connected with the waveguide slot 13, and the transmission slot 14 is provided with an unetched conductive circuit, i.e. an antenna 15. An antenna 15 extends along the transmission slot 14, one end of the antenna 15 extending into the waveguide slot 13 and the other end being connected to a transceiver module on the circuit board 1.

As shown in fig. 6, the panel 2 is provided with a waveguide hole 22, the waveguide hole 22 may penetrate through the panel 2 along any route, one end opening may be provided on the front surface of the panel 2, the other end opening may be provided on the back surface of the panel 2, and in the present embodiment, the waveguide hole 22 extends along a straight line. The waveguide hole 22 may also be arbitrarily bent, and is not limited herein, since the panel 2 is made of metal, and the inner wall of the waveguide hole 22 totally reflects the millimeter waves, and can transmit the millimeter waves from one end to the other end.

The back surface of the panel 2 is provided with a boss 21, the metal layer 12 of the circuit board 1 is pressed against the boss 21, and one end opening of the waveguide hole 22 is located on the boss 21. An opening at one end of the waveguide hole 22 is aligned with the waveguide groove 13, after the front surface of the panel 2 receives millimeter waves, the millimeter waves are transmitted to the back surface of the panel 2 along the waveguide hole 22 and are converted into electric signals through the antenna 15 in the waveguide groove 13; or the electric signal is converted into millimeter waves through the antenna 15 in the waveguide slot 13, the millimeter waves are transmitted from the back surface of the panel 2 to the front surface of the panel 2 through the waveguide hole 22, and then the millimeter waves are emitted from the front surface of the panel 2.

The boss 21 is further provided with a guide groove 23, and the guide groove 23 is matched with the transmission groove 14, so that the antenna 15 is prevented from contacting the panel 2, and electromagnetic interference is reduced.

The press block 3 is arranged on the side of the circuit board 1 far away from the panel 2, and the press block 3 is inserted into the through hole 16, so that the end part of the press block 3 is tightly attached to the metal layer 12. As shown in fig. 7, the compact 3 is provided with a resonant cavity 31, the resonant cavity 31 is aligned with the waveguide slot 13, and the shape and size of the opening of the waveguide hole 22, the shape and size of the waveguide slot 13 and the shape and size of the opening of the resonant cavity 31 are the same, so that the waveguide hole 22, the waveguide slot 13 and the resonant cavity 31 form a continuous passage. The resonant cavity 31 may enhance millimeter waves by resonance when receiving or emitting millimeter waves. In this embodiment, the depth of the resonant cavity 31 is 0.4mm to 0.9 mm.

Preferably, the circuit board 1 may be fixed to the rear surface of the panel 2 by screws. In addition, the back of panel 2 can set up the protective housing, and the protective housing is fixed in panel 2 to cover circuit board 1, play dustproof and crashproof effect to circuit board 1. The press block 3 may be fixed to the protective case.

When millimeter waves are emitted, the antenna 15 converts electric signals into millimeter waves in the waveguide slot 13, the millimeter waves are reinforced by the resonant cavity 31, and then the millimeter waves are sent to the front side surface of the panel 2 through the waveguide hole 22 and emitted from the front side surface of the panel 2.

When millimeter waves are received, the millimeter waves come to the back of the panel 2 through the waveguide holes 22, and then are reinforced by the resonant cavity 31, and then the millimeter waves are converted into electric signals by the antenna in the waveguide groove 13 and sent to the transceiver module.

The utility model integrates the antenna and the receiving and transmitting component on the same circuit board, thereby greatly reducing the volume of the waveguide antenna and being convenient to install.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A waveguide and circuit board conduction structure is characterized by comprising a panel (2) and a circuit board (1); the panel (2) is provided with a waveguide hole (22) penetrating through the panel (2); the surface of the circuit board (1) is provided with a waveguide groove (13) and a transmission groove (14), and an antenna (15) is arranged along the transmission groove (14); one end of the antenna (15) extends into the waveguide groove (13), and the other end of the antenna is connected with a transceiving component on the circuit board (1); the surface of the circuit board (1) is pressed on the back surface of the panel (2), and the waveguide groove (13) is aligned with one end opening of the waveguide hole (22).

2. A waveguide-to-circuit board via structure according to claim 1, wherein the opening of the waveguide hole (22) has the same shape and size as the waveguide slot (13).

3. A waveguide-to-circuit board via structure according to claim 1, wherein the circuit board (1) comprises a metal layer (12) and a base layer (11), and the waveguide slot (13), the transmission slot (14) and the antenna (15) are etched in the metal layer (12).

4. A waveguide and circuit board connection structure according to claim 3, further comprising a press block (3); the base layer (11) is provided with a through hole (16); the pressing block (3) is inserted into the through hole (16) and is tightly attached to the metal layer (12); a resonant cavity (31) is formed in the pressing block (3), and the resonant cavity (31) is aligned with the waveguide groove (13).

5. A waveguide-to-circuit board connection structure according to claim 4, wherein the opening of said resonant cavity (31) has the same shape and size as the shape and size of said waveguide slot (13).

6. A waveguide and circuit board connection structure as claimed in claim 4, wherein the depth of the resonant cavity (31) is 0.4mm to 0.9 mm.

7. A waveguide and circuit board connection structure as claimed in claim 3, wherein the thickness of the metal layer (12) is 0.15mm to 0.35 mm.

8. A waveguide-to-circuit board connection structure according to claim 1, wherein the panel (2) is provided with a guide groove (23) adapted to the transmission groove (14).

9. A waveguide-to-circuit board via structure according to claim 1, wherein a boss (21) is disposed on the back surface of the panel (2), and the circuit board (1) is pressed against the boss (21).