Four-in-one PCB patch antenna

Abstract

The utility model discloses a four-in-one printed circuit board (PCB) patch antenna, which comprises a PCB; the base material is of a rectangular structure, the bottom surface of the base material is attached to the surface of the PCB, a first side surface of the base material is provided with a first groove and a second groove which penetrate through the top surface and the bottom surface of the base material, and a second side surface of the base material is provided with a third groove symmetrical to the first groove and a fourth groove symmetrical to the second groove; a first metal conductor is attached to the surface of the first groove, a second metal conductor is attached to the surface of the second groove, a third metal conductor is attached to the surface of the third groove, and a fourth metal conductor is attached to the surface of the fourth groove. The third side surface of the base material is covered with a fifth metal conductor, and the fourth side surface of the base material is covered with a sixth metal conductor; a seventh metal conductor, an eighth metal conductor and a ninth metal conductor are arranged on the top surface of the base material; according to the utility model, the problem that the existing GPS and WIFI antennas are large in size and cannot meet the integration of small-size electronic equipment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to a four-in-one PCB patch antenna. Background Art

[0002] With the rapid development of communication technology, the size of wireless mobile terminal products is getting smaller and smaller, and the number of communication frequency bands is increasing. As a result, there are more and more antennas. In a limited space, the antenna layout is becoming more and more difficult. The WIFI antenna and GPS antenna in existing products are widely used and often exist in the same device at the same time. In addition, the GPSL1 frequency band is lower, and the antenna winding is longer, which occupies a larger space. It will interfere with the normal operation of other antennas and reduce the isolation.

[0003] The main factors affecting the performance of the built-in antenna include: antenna area, antenna clearance, antenna height and other environmental influences. Therefore, how to make full use of the already small mobile terminal space has been a goal that the industry has been pursuing.

[0004] Conventional mobile terminal antennas on the market are currently implemented on the bottom shell. Due to space limitations, the area of ​​the antenna is also limited, which limits the antenna bandwidth and cannot meet the multi-band high-efficiency requirements of GPS, WIFI and BT antennas.

[0005] There are many types of existing WIFI6E and GPS antenna products, but they all have many disadvantages, such as high cost, difficulty in manufacturing, strong targeting and poor portability.

[0006] Most of the existing GPS / WIFI and WIFI6E antennas are large in size and difficult to be arranged in a very small clearance range. For example, some watch-type devices are small in overall size, leaving less and less space for antennas, and are highly integrated and miniaturized. At this time, a smaller antenna is needed while ensuring antenna performance. Utility Model Content

[0007] The main purpose of the utility model is to provide a four-in-one PCB patch antenna, aiming to solve the problem that the existing GPS and WIFI antennas are large in size and cannot meet the integration requirements of small-sized electronic devices.

[0008] To achieve the above object, the utility model proposes a four-in-one PCB patch antenna, comprising:

[0009] PCB board;

[0010] A substrate, wherein the substrate is arranged in a rectangular structure, the bottom surface of the substrate is attached to the surface of the PCB board, the first side surface of the substrate is provided with a first groove and a second groove penetrating the top and bottom surfaces thereof, and the second side surface of the substrate is provided with a third groove symmetrical to the first groove and a fourth groove symmetrical to the second groove;

[0011] The first groove surface is bonded with a first metal conductor, the second groove surface is bonded with a second metal conductor, the third groove surface is bonded with a third metal conductor, and the fourth groove surface is bonded with a fourth metal conductor;

[0012] The third side of the substrate is covered with a fifth metal conductor, and the fourth side of the substrate is covered with a sixth metal conductor; the top surface of the substrate is provided with a seventh metal conductor, an eighth metal conductor and a ninth metal conductor; the seventh metal conductor comprises a first arm whose two ends are respectively connected to the first metal conductor and the third metal conductor, and a second arm perpendicular to the first arm; the eighth metal conductor, the second arm of the seventh metal conductor, and the ninth metal conductor are arranged in parallel, and the second arm of the seventh metal conductor is located between the eighth metal conductor and the ninth metal conductor; the two ends of the eighth metal conductor are respectively connected to the second metal conductor and the sixth metal conductor, and the two ends of the ninth metal conductor are respectively connected to the fourth metal conductor and the sixth metal conductor;

[0013] The surface of the PCB board is respectively provided with pads connected to the first metal conductor, the second metal conductor, the third metal conductor, the fourth metal conductor, the fifth metal conductor and the sixth metal conductor;

[0014] The surface of the PCB board is provided with a first circuit, a second circuit and a third circuit connected to the pad, and the bottom surface of the PCB board is provided with a parasitic branch; the first circuit and the fifth metal conductor form a first radiation branch, the second circuit and the first metal conductor, the seventh metal conductor and the third metal conductor form a second radiation branch, the third circuit and the second metal conductor, the eighth metal conductor, the sixth metal conductor, the ninth metal conductor and the fourth metal conductor form a third radiation branch, and the parasitic branch forms a fourth radiation branch.

[0015] Optionally, a clearance area for mounting the substrate is provided on the PCB board.

[0016] Optionally, the clearance area is arranged in a rectangular shape, the length of the clearance area is greater than or equal to 11 mm, and the width of the clearance area is greater than or equal to 6 mm.

[0017] Optionally, the size of the clearance area is set to 11 mm*6 mm, and the size of the substrate is set to 7.5 mm*4 mm*2 mm.

[0018] Optionally, the substrate is configured as an integral structure made of FR4 material, and the dielectric constant of the substrate is configured to be 4.4.

[0019] Optionally, the first metal conductor, the second metal conductor, the third metal conductor, the fourth metal conductor, the fifth metal conductor, the sixth metal conductor, the seventh metal conductor, the eighth metal conductor and the ninth metal conductor are all configured as copper sheet structures.

[0020] Optionally, a main circuit connected to the first circuit, the second circuit and the third circuit is also provided on the surface of the PCB board.

[0021] Optionally, a first inductor is installed on the second line, a second inductor is installed on the third line, and a third inductor is installed on one side of the main line.

[0022] Optionally, the first groove, the second groove, the third groove and the fourth groove are configured as arc-shaped grooves.

[0023] Optionally, the radiation frequency of the first radiation branch is set to 5.15 GHz-5.85 GHz, the radiation frequency of the second radiation branch is set to 2.4 GHz-2.5 GHz, the radiation frequency of the third radiation branch is set to 1.575 GHz, and the radiation frequency of the fourth radiation branch is set to 5.95 GHz-7.125 GHz.

[0024] The beneficial effects of the utility model are: improving the existing antenna structure, proposing a GPS, WIFI2.4, WIFI5G, WIFI6E miniaturized patch antenna structure, which is a four-in-one antenna, realizing miniaturization, high efficiency functions, and is implemented in the form of a patch antenna, made of PCB, with lower cost than ceramic antennas on the market, rich application scenarios, and can be used in various mobile terminal devices, watches, smart AR / VR glasses, etc. Due to its portability, this solution can be used in a variety of terminal products with GPS, WIFI, and BT functions. Due to its miniaturization, it can be directly integrated on the main board of the host and patched together with the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of the patch antenna of the utility model;

[0027] Figure 2 This is an exploded diagram of the structure between the substrate and the metal conductor of the utility model;

[0028] Figure 3 It is a schematic diagram of the structure between the PCB board and each circuit and pad of the utility model;

[0029] Figure 4 Figure S11 of the antenna of the utility model;

[0030] Figure 5 It is the passive efficiency diagram of the antenna of the utility model;

[0031] Figure 6 The radiation pattern of the first radiation branch of the utility model;

[0032] Figure 7 The radiation pattern of the second radiation branch of the utility model;

[0033] Figure 8 The radiation pattern of the third radiation branch of the utility model;

[0034] Fig. 9 The radiation pattern of the fourth radiation branch of the utility model;

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0039] An embodiment of the present invention provides a four-in-one PCB patch antenna, referring to Figures 1 to 3 ,include:

[0040] PCB board 1;

[0041] A substrate 2, wherein the substrate 2 is in a rectangular structure, the bottom surface of the substrate 2 is attached to the surface of the PCB board 1, the first side surface of the substrate 2 is provided with a first groove 21 and a second groove 22 that pass through the top and bottom surfaces thereof, and the second side surface of the substrate 2 is provided with a third groove 23 symmetrical to the first groove 21 and a fourth groove 24 symmetrical to the second groove 22;

[0042] The first groove 21 has a first metal conductor 31 attached to its surface, the second groove 22 has a second metal conductor 32 attached to its surface, the third groove 23 has a third metal conductor 33 attached to its surface, and the fourth groove 24 has a fourth metal conductor 34 attached to its surface.

[0043] The third side surface of the substrate 2 is covered with a fifth metal conductor 35, and the fourth side surface of the substrate 2 is covered with a sixth metal conductor 36; the top surface of the substrate 2 is provided with a seventh metal conductor 37, an eighth metal conductor 38 and a ninth metal conductor 39; the seventh metal conductor 37 includes a first arm whose two ends are respectively connected to the first metal conductor 31 and the third metal conductor 33, and a second arm perpendicular to the first arm; the eighth metal conductor 38, the second arm of the seventh metal conductor 37, and the ninth metal conductor 39 are arranged in parallel, and the second arm of the seventh metal conductor 37 is located between the eighth metal conductor 38 and the ninth metal conductor 39; the two ends of the eighth metal conductor 38 are respectively connected to the second metal conductor 32 and the sixth metal conductor 36, and the two ends of the ninth metal conductor 39 are respectively connected to the fourth metal conductor 34 and the sixth metal conductor 36;

[0044] The surface of the PCB board 1 is provided with pads 16 connected to the first metal conductor 31, the second metal conductor 32, the third metal conductor 33, the fourth metal conductor 34, the fifth metal conductor 35 and the sixth metal conductor 36 respectively;

[0045] The surface of the PCB board 1 is provided with a first circuit 11, a second circuit 12 and a third circuit 13 connected to the pad 16, and the bottom surface of the PCB board 1 is provided with a parasitic branch; the first circuit 11 and the fifth metal conductor 35 form a first radiation branch, the second circuit 12 and the first metal conductor 31, the seventh metal conductor 37 and the third metal conductor 33 form a second radiation branch, the third circuit 13 and the second metal conductor 32, the eighth metal conductor 38, the sixth metal conductor 36, the ninth metal conductor 39 and the fourth metal conductor 34 form a third radiation branch, and the parasitic branch forms a fourth radiation branch.

[0046] This embodiment improves the structure of the existing WIFI and GPS antennas, and integrates the GPS and WIFI antennas on a substrate 2 by using a patch method. On the basis of ensuring the normal performance of the antenna, the volume of the antenna is greatly reduced, and it can be integrated into mobile terminals of various volumes, especially small-volume mobile terminals, with simple process and low cost. Specifically,

[0047] Furthermore, a clearance area 17 for mounting the substrate 2 is provided on the PCB board 1. The clearance area 17 refers to an open area around the antenna without any obstructions or interference sources to ensure that the antenna can operate normally and obtain optimal performance. The clearance area 17 can ensure that the signal received or sent by the antenna is not obstructed, thereby ensuring the reliability and stability of the signal. The absence of obstructions or interference sources can reduce signal attenuation and distortion, and improve the reception and transmission efficiency of the antenna. The clearance area 17 can also help the antenna achieve a more accurate radiation pattern and directivity, and reduce the impact of external interference and noise on antenna performance.

[0048] The larger the clearance area 17 is, the better the performance of the antenna is. In this embodiment, in order to meet the requirements of miniaturization, the clearance area 17 is set in a rectangular shape to match the overall shape of the substrate 2. The length of the clearance area 17 is greater than or equal to 11 mm, and the width of the clearance area 17 is greater than or equal to 6 mm. Preferably, the size of the clearance area 17 is set to 11 mm*6 mm, and the size of the substrate 2 is set to 7.5 mm*4 mm*2 mm.

[0049] Furthermore, the substrate 2 is configured as an integrated structure made of FR4 material, and the dielectric constant of the substrate 2 is configured as 4.4. This material is a commonly used material for the substrate 2 of the PCB board 1, which can reduce the overall manufacturing cost and ensure the antenna performance.

[0050] Furthermore, the first metal conductor 31, the second metal conductor 32, the third metal conductor 33, the fourth metal conductor 34, the fifth metal conductor 35, the sixth metal conductor 36, the seventh metal conductor 37, the eighth metal conductor 38 and the ninth metal conductor 39 are all configured as copper sheet structures. Copper is an excellent conductive material with good electrical conductivity and conductive properties. Using copper sheets as the component structure of the radiation branch can effectively transmit current, reduce energy loss, and improve the efficiency of the antenna.

[0051] Furthermore, a main circuit 14 connected to the first circuit 11 , the second circuit 12 and the third circuit 13 is also provided on the surface of the PCB board 1 .

[0052] In this embodiment, the radiation frequency of the first radiation branch is set to 5.15GHz-5.85GHz, which can be used as a WIFI5 antenna; the radiation frequency of the second radiation branch is set to 2.4GHz-2.5GHz, which can be used as a WIFI2.4 antenna; the radiation frequency of the third radiation branch is set to 1.575GHz, which can be used as a GPSL1 antenna; the radiation frequency of the fourth radiation branch is set to 5.95GHz-7.125GHz, which can be used as a WIFI6E antenna, thereby forming a four-in-one patch antenna.

[0053] Furthermore, a first inductor 18 is installed on the second line 12, a second inductor 19 is installed on the third line 13, and a third inductor 110 is installed on one side of the main line 14. The values ​​of the three inductors can be selected according to actual use requirements, so as to tune the antenna to adapt to different antenna environments. Specifically, the reference value of the first inductor 18 is set to 4.8e~9, the reference value of the second inductor 19 is set to 6e~9, and the reference value of the third inductor 110 is set to 2.2e~9.

[0054] Furthermore, the first groove 21 , the second groove 22 , the third groove 23 and the fourth groove 24 are configured as arc-shaped grooves, so as to facilitate the processing of the groove structure.

[0055] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A four-in-one PCB patch antenna, characterized in that: include: PCB board; A substrate, wherein the substrate is arranged in a rectangular structure, the bottom surface of the substrate is attached to the surface of the PCB board, the first side surface of the substrate is provided with a first groove and a second groove penetrating the top and bottom surfaces thereof, and the second side surface of the substrate is provided with a third groove symmetrical to the first groove and a fourth groove symmetrical to the second groove; The first groove surface is bonded with a first metal conductor, the second groove surface is bonded with a second metal conductor, the third groove surface is bonded with a third metal conductor, and the fourth groove surface is bonded with a fourth metal conductor; The third side of the substrate is covered with a fifth metal conductor, and the fourth side of the substrate is covered with a sixth metal conductor; the top surface of the substrate is provided with a seventh metal conductor, an eighth metal conductor and a ninth metal conductor; the seventh metal conductor comprises a first arm whose two ends are respectively connected to the first metal conductor and the third metal conductor, and a second arm perpendicular to the first arm; the eighth metal conductor, the second arm of the seventh metal conductor, and the ninth metal conductor are arranged in parallel, and the second arm of the seventh metal conductor is located between the eighth metal conductor and the ninth metal conductor; the two ends of the eighth metal conductor are respectively connected to the second metal conductor and the sixth metal conductor, and the two ends of the ninth metal conductor are respectively connected to the fourth metal conductor and the sixth metal conductor; The surface of the PCB board is respectively provided with pads connected to the first metal conductor, the second metal conductor, the third metal conductor, the fourth metal conductor, the fifth metal conductor and the sixth metal conductor; The surface of the PCB board is provided with a first circuit, a second circuit and a third circuit connected to the pad, and the bottom surface of the PCB board is provided with a parasitic branch; the first circuit and the fifth metal conductor form a first radiation branch, the second circuit and the first metal conductor, the seventh metal conductor and the third metal conductor form a second radiation branch, the third circuit and the second metal conductor, the eighth metal conductor, the sixth metal conductor, the ninth metal conductor and the fourth metal conductor form a third radiation branch, and the parasitic branch forms a fourth radiation branch.

2. The four-in-one PCB patch antenna according to claim 1, characterized in that: The PCB board is provided with a clearance area for mounting the substrate.

3. The four-in-one PCB patch antenna according to claim 2, characterized in that: The clearance area is arranged in a rectangular shape, the length of the clearance area is greater than or equal to 11 mm, and the width of the clearance area is greater than or equal to 6 mm.

4. The four-in-one PCB patch antenna according to claim 3, characterized in that: The size of the clearance area is set to 11 mm*6 mm, and the size of the substrate is set to 7.5 mm*4 mm*2 mm.

5. The four-in-one PCB patch antenna according to claim 4, characterized in that: The substrate is configured as an integral structure made of FR4 material, and the dielectric constant of the substrate is configured as 4.

4.

6. The four-in-one PCB patch antenna according to claim 1, characterized in that: The first metal conductor, the second metal conductor, the third metal conductor, the fourth metal conductor, the fifth metal conductor, the sixth metal conductor, the seventh metal conductor, the eighth metal conductor and the ninth metal conductor are all configured as copper sheet structures.

7. The four-in-one PCB patch antenna according to claim 1, characterized in that: A main circuit connected to the first circuit, the second circuit and the third circuit is also provided on the surface of the PCB board.

8. The four-in-one PCB patch antenna according to claim 7, characterized in that: A first inductor is installed on the second line, a second inductor is installed on the third line, and a third inductor is installed on one side of the main line.

9. The four-in-one PCB patch antenna according to claim 1, characterized in that: The first groove, the second groove, the third groove and the fourth groove are configured as arc-shaped grooves.

10. The four-in-one PCB patch antenna according to claim 1, characterized in that: The radiation frequency of the first radiation branch is set to 5.15 GHz-5.85 GHz, the radiation frequency of the second radiation branch is set to 2.4 GHz-2.5 GHz, the radiation frequency of the third radiation branch is set to 1.575 GHz, and the radiation frequency of the fourth radiation branch is set to 5.95 GHz-7.125 GHz.

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