Decoupled dual-frequency antenna

Abstract

The utility model provides a decoupling dual-frequency antenna, which comprises a first inner feed pin, a first outer feed pin, an upper radiation electrode, a dielectric substrate, a lower radiation electrode and a reflecting layer, and is characterized in that the upper radiation electrode is provided with a first radiation electrode and a second radiation electrode which are separated by an isolation slot; the first outer feed needle and the first inner feed needle sequentially penetrate through the upper-layer radiation electrode, the dielectric substrate, the lower-layer radiation electrode and the reflecting layer, the upper ends of the first outer feed needle and the first inner feed needle are electrically connected with the first radiation electrode and the second radiation electrode respectively, and a first grounding through hole is formed in the plane where the first inner feed needle and the first outer feed needle are located. According to the invention, decoupling is optimized through the design of the isolation slot and the grounding through hole, so that stable transmission of a dual-frequency signal is ensured; and the feed needle and the grounding through hole are reasonably arranged, so that accurate signal transmission is realized. In addition, the ground holes between the inner and outer feed point holes can effectively eliminate mutual coupling of the electrodes, reduce electromagnetic interference, ensure independent and stable signal transmission of each electrode, and improve the overall performance of the antenna system.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field and particularly relates to a decoupling dual-frequency antenna. BACKGROUND

[0002] With the rapid development of wireless communication technology, the requirement for antenna performance is increasing. In a multi-frequency communication system, dual-frequency antennas are increasingly widely used, but the traditional dual-frequency antennas often have coupling problems, which affect the signal transmission quality and efficiency, and there is an urgent need for a dual-frequency antenna design that can effectively decouple. SUMMARY

[0003] To solve the above technical problems, the present application provides a decoupling dual-frequency antenna to solve the problems of coupling interference, poor signal transmission and the like of the existing dual-frequency antenna, and improve the performance stability and reliability of the antenna in a dual-frequency working state.

[0004] The utility model provides a kind of decoupling dual-frequency antenna, the dual-frequency antenna includes first inner feed needle, first outer feed needle, upper layer radiation electrode, dielectric matrix, lower layer radiation electrode and reflection layer, upper layer radiation electrode is equipped with by the first radiation electrode and second radiation electrode that isolation slot gap divides, first outer feed needle and first inner feed needle in turn penetrate upper layer radiation electrode, dielectric matrix, lower layer radiation electrode and reflection layer, and its upper end is electrically connected with first radiation electrode, second radiation electrode respectively, first inner feed needle and first outer feed needle The plane where it is located is provided with first ground hole.

[0005] In the above technical solution, first inner feed needle and first outer feed needle can respectively transmit electrical signals accurately to the corresponding radiation electrode, and the setting of the first ground hole helps to stabilize the potential of the antenna, reduce electromagnetic interference, improve the decoupling performance of the antenna, and thus ensure the effective transmission of dual-frequency signals.

[0006] Further, the distance d1 between the first ground hole and the first outer feed needle is less than the distance d2 between the first ground hole and the first inner feed needle. The difference in distance is set to adjust the electromagnetic field distribution near the first outer feed needle and the first inner feed needle, further optimize the current return path, make the signal transmission of different feed needles more stable, and enhance the anti-interference ability and decoupling effect of the antenna when working in dual-frequency.

[0007] Further, the antenna further includes a second inner feed needle and a second outer feed needle, and the plane where the second inner feed needle and the second outer feed needle are located is provided with a third ground hole. The addition of the second inner feed needle and the second outer feed needle provides more signal excitation modes for the antenna, widens the application scenarios of the antenna, and the setting of the third ground hole can effectively ensure the potential stability of the plane, reduce the electromagnetic coupling of this part of circuit, and improve the overall performance of the dual-frequency antenna.

[0008] Further, the second radiation electrode is a center-symmetric "X"-like structure, which includes a first branch, a second branch, a third branch and a fourth branch extending from a center through-hole. The center-symmetric "X"-like structure is beneficial to uniformly radiate electromagnetic waves, increase the radiation coverage of the antenna, and the symmetric structure makes the electromagnetic performance of the antenna consistent in all directions, thereby improving the stability and directivity of the antenna radiation.

[0009] Further, the first radiation electrode includes a first protrusion part matched with a concave part between two adjacent branches of the "X"-like structure, and a first outer feeding pin and a first grounding through-hole are sequentially arranged on the first protrusion part. The first outer feeding pin and the first grounding through-hole are arranged on the protrusion part, which is beneficial to accurate signal feeding and effective grounding, and helps to concentrate and guide current, thereby optimizing the radiation performance and decoupling effect of the antenna.

[0010] Further, the first inner feeding pin is arranged in a concave part of the second radiation electrode, and the concave part is formed by inwardly recessing two other adjacent branches of the "X"-like structure. The first inner feeding pin arranged in the specific concave part can more accurately inject electrical signals into the corresponding area of the second radiation electrode, which is beneficial to exciting the area to generate a specific electromagnetic field distribution, thereby improving the radiation efficiency of the antenna and the separation degree of the dual-frequency signals, and enhancing the decoupling capability.

[0011] Further, the first radiation electrode further includes a second protrusion part matched with the concave part, and the second protrusion part is provided with a second grounding through-hole. The matched design of the second protrusion part and the concave part further improves the structural complementarity between the first radiation electrode and the second radiation electrode, and the second grounding through-hole arranged on the protrusion part can further optimize the grounding performance of the first radiation electrode, reduce the electromagnetic coupling between the two radiation electrodes, and improve the overall performance of the antenna.

[0012] Further, the plane where the first outer feeding pin and the second outer feeding pin are located is parallel to the plane where the first inner feeding pin and the second inner feeding pin are located. The parallel arrangement of the two planes is beneficial to forming a relatively regular and stable electromagnetic field distribution, reducing complex electromagnetic interference caused by the intersection of the planes, making the signal transmission of the inner feeding pin and the outer feeding pin in their respective planes more independent and stable, and enhancing the anti-interference capability and decoupling effect of the antenna.

[0013] Further, the isolation slot is arranged in a symmetric zigzag shape. The use of geometrically symmetric shape makes the overall electromagnetic distribution of the antenna uniform, thereby improving the consistency of the radiation performance of the antenna.

[0014] Further, at least two grounding through holes are arranged on the plane where the first outer feeding needle and the first inner feeding needle are located, and / or at least two grounding through holes are arranged on the plane where the second outer feeding needle and the second inner feeding needle are located, and the grounding through holes pass through the upper radiation electrode, the dielectric substrate and the lower radiation electrode. Multiple grounding through holes are arranged on the corresponding planes, good grounding is achieved from multiple points, a more stable ground potential distribution is formed, electromagnetic coupling is further inhibited, the internal stray electromagnetic field interference of the antenna is reduced, and the stability and reliability of the antenna in the dual-frequency working mode are effectively improved.

[0015] Further, the grounding through hole is arranged on the first radiation electrode. Arranging the grounding through hole on the first radiation electrode can more directly regulate the potential of the first radiation electrode, effectively guide the current to flow back to the ground, reduce the influence of the electromagnetic interference generated by the first radiation electrode on other components, and improve the decoupling performance and working stability of the entire antenna system.

[0016] Compared with the prior art, the beneficial results of the utility model lie in:

[0017] 1. The first radiation electrode and the second radiation electrode are divided by the isolation groove, and the arrangement of the grounding through hole effectively reduces the electromagnetic coupling between the dual-frequency signals. Multiple grounding through holes regulate the potential from multiple points, inhibit the stray electromagnetic field interference, achieve a more excellent decoupling effect, and ensure the stable transmission of the dual-frequency signals.

[0018] 2. The first inner feeding needle and the first outer feeding needle are electrically connected with the corresponding radiation electrode respectively, and the layout design of each feeding needle and the grounding through hole is reasonable. The electromagnetic field distribution can be adjusted in a targeted manner, the current return path is optimized, and the signal transmission is more accurate and stable.

[0019] 3. The center-symmetric structure of the second radiation electrode in the "X" shape increases the radiation coverage range, makes the electromagnetic performance of the antenna more consistent in each direction, and improves the stability and directivity of radiation. The complementary design of the structure of the first radiation electrode and the second radiation electrode, such as the adaptation of the protruding part and the concave part, helps to concentrate and guide the current, and further optimizes the radiation performance.

[0020] 4. The addition of the second inner feeding needle and the second outer feeding needle provides more signal excitation modes for the antenna, increases the application flexibility of the antenna, and widens the applicable application scenarios.

[0021] 5. The plane where the first outer feeding needle and the second outer feeding needle are located is parallel to the plane where the first inner feeding needle and the second inner feeding needle are located, a regular and stable electromagnetic field distribution is formed, the complex electromagnetic interference caused by the intersection of the planes is reduced, and the anti-interference ability of the antenna is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present application. Other embodiments and many of the intended advantages of the present application will be readily appreciated as the same becomes better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

[0023] Figure 1 is a structure diagram of a decoupled dual-frequency antenna according to the present application;

[0024] Figures 2a-2b is a top view and a sectional view in A-A direction of a decoupled dual-frequency antenna according to the present application;

[0025] Figure 3 is a structure diagram of an upper layer radiation electrode according to the present application;

[0026] Figures 4a-4b is a structure diagram of a first radiation electrode and a second radiation electrode according to the present application;

[0027] Figure 5 is a structure diagram of a lower layer radiation electrode according to the present application;

[0028] Figure 6 is a structure diagram of a dielectric substrate according to the present application;

[0029] Meaning of each number in the figure: 100 - inner feeding needle, 200 - outer feeding needle, 300 - upper layer radiation electrode, 400 - dielectric substrate, 500 - lower layer radiation electrode, 600 - reflecting layer, 700 - ground via, 800 - center via, 101 - first inner feeding needle, 102 - second inner feeding needle, 201 - second outer feeding needle, 202 - second outer feeding needle, 301 - first radiation electrode, 302 - second radiation electrode, 303 - isolation slot, 3021 - first branch, 3022 - second branch, 3023 - third branch, 3024 - fourth branch, 3011 - first protruding part, 3012 - second protruding part, 3013 - third protruding part, 3014 - fourth protruding part, 3015 - accommodating groove, 701 - first ground via, 702 - second ground via, 703 - third ground via, 704 - fourth ground via. DETAILED DESCRIPTION

[0030] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration illustrative embodiments in which the application can be practiced. For purposes of explanation and illustration, directional terms are used with respect to the descriptions, such as "top," "bottom," "left," "right," "up," "down," etc. Because embodiments can be positioned in a number of different orientations, the directional terms are used for purposes of illustration and are in no way limiting. It is to be understood that other embodiments can be utilized and logical changes can be made without departing from the scope of the present application. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0031] The utility model provides a decoupling's double -frenquency antenna, reference Figure 1 And Figures 2a-2b , Figure 1 And Figures 2a-2b Structure diagram, top view and A-A direction's section view of decoupling's double -frenquency antenna according to the utility model are shown as shown, decoupling double -frenquency antenna, mainly by inner feed needle 100, outer feed needle 200, upper layer radiation electrode 300, dielectric matrix 400, lower layer radiation electrode 500 and reflection layer 600 etc. component constitutes, be equipped with isolation slot gap 303 on upper layer radiation electrode 300, this slot gap divides upper layer radiation electrode 300 into first radiation electrode 301 and second radiation electrode 302, preferably, isolation slot gap 303 is sawtooth isolation slot gap. First outer feed needle 201 and first inner feed needle 101 in accordance with order, in turn, penetrate upper layer radiation electrode 300, dielectric matrix 400, lower layer radiation electrode 500 and reflection layer 600. Among them, the upper end of first outer feed needle 201 and first radiation electrode 301 realize electric connection, and the upper end of first inner feed needle 101 is electrically connected with second radiation electrode 302. First inner feed needle 101 and first outer feed needle 201 are provided with ground hole on the plane, and upper layer radiation electrode 300, lower layer radiation electrode 500 and reflection layer 600 are conductors, preferably, metal good conductors, and the size of dielectric matrix 400 is greater than the size of upper layer radiation electrode 300 and lower layer radiation electrode 600, for realizing the support and insulation of antenna.

[0032] In some specific embodiments, in combination Figure 3 , Figure 3 Structure diagram of upper layer radiation electrode of decoupling's double -frenquency antenna according to the utility model is shown as Figure 3 And as shown in Fig. 2, the double -frenquency antenna further includes a center through hole 800, which is Figure 2bIt can be seen that the first outer feeding pin 201, the first ground via hole 701, the center via hole 800, the first inner feeding pin 101 and the second ground via hole 702 are arranged on the same plane. The distance d1 from the first ground via hole 701 to the first outer feeding pin 201 is less than the distance d2 from the first ground via hole 701 to the first inner feeding pin 101. Preferably, the dual-frequency antenna further comprises a second outer feeding pin 202, a third ground via hole 703, a second inner feeding pin 102 and a fourth ground via hole 704, the second outer feeding pin 202, the third ground via hole 703, the center via hole 800, the second inner feeding pin 102 and the fourth ground via hole 704 are arranged on the same plane, and the distance from the third ground via hole 703 to the second outer feeding pin 202 is less than the distance from the third ground via hole 703 to the second inner feeding pin 102.

[0033] In some specific embodiments, further referring to Figure 3 -4, Figure 4a and Figure 4bThe utility model discloses a decoupled dual-frequency antenna, which comprises a first radiating electrode and a second radiating electrode, a first outer feed pin, a second outer feed pin, a first inner feed pin and a second inner feed pin, and a first outer feed point hole, a second outer feed point hole, a first inner feed point hole and a second inner feed point hole.The planes where the first outer feed pin 201 and the second outer feed pin 202 are located are parallel to the planes where the first inner feed pin 101 and the second inner feed pin 101 are located, and the parallel structure design ensures the cooperative stability between different feed paths of the antenna in the multi-frequency working state, effectively improving the reliability and efficiency of signal transmission. On the one hand, this design helps to accurately control the current distribution and electromagnetic field trend inside the antenna, effectively guides the current backflow to the ground plane through the grounding through hole, reduces signal interference and electromagnetic coupling effect, and improves the stability and reliability of the antenna working; on the other hand, the inner feed point hole and the outer feed point hole are orderly distributed in the respective planes, which can better realize the signal feeding and transmission, and optimize the radiation performance of the antenna. Such design can fully exert the synergistic effect of each component, thereby significantly improving the overall performance of the decoupled dual-frequency antenna in practical application, and meeting the stringent requirements of modern communication technology for efficient and stable antenna working.

[0034] With reference to the foregoing Figures 5-6 , Figures 5-6 The structure diagrams of the lower layer radiation electrode and the dielectric substrate of the utility model are respectively shown. As shown in the drawings, on the lower layer radiation electrode 500 and the dielectric substrate 400, the hole positions or channels matched with the first inner feed pin 101, the second inner feed pin 102, the first outer feed pin 201, the second outer feed pin 202, the first grounding through hole 701, the second grounding through hole 702, the third grounding through hole 703 and the fourth grounding through hole 704 are respectively arranged.

[0035] Obviously, those skilled in the art can make various modifications and changes to the embodiments of the utility model without departing from the spirit and scope of the utility model. In this way, the utility model also aims to cover these modifications and changes if they are within the scope of the claims of the utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not mean that the combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered limiting the scope.

Claims

1. A decoupled dual-band antenna, characterized by, The dual-frequency antenna comprises a first inner feeding pin, a first outer feeding pin, an upper layer radiation electrode, a dielectric substrate, a lower layer radiation electrode and a reflecting layer, the upper layer radiation electrode is provided with a first radiation electrode and a second radiation electrode which are divided by an isolation slot, the first outer feeding pin and the first inner feeding pin sequentially penetrate the upper layer radiation electrode, the dielectric substrate, the lower layer radiation electrode and the reflecting layer, and the upper ends thereof are electrically connected with the first radiation electrode and the second radiation electrode respectively, and the plane where the first inner feeding pin and the first outer feeding pin are located is provided with a first grounding through hole.

2. The decoupled dual-band antenna of claim 1, wherein, The distance d1 between the first grounding through hole and the first outer feeding pin is less than the distance d2 between the first grounding through hole and the first inner feeding pin.

3. The decoupled dual-band antenna of claim 1, wherein, The antenna further comprises a second inner feeding pin and a second outer feeding pin, and the plane where the second inner feeding pin and the second outer feeding pin are located is provided with a third grounding through hole.

4. The decoupled dual-band antenna of claim 1, wherein, The second radiation electrode is a center-symmetrical "X"-like structure, which comprises a first branch, a second branch, a third branch and a fourth branch extending from a center through hole to the periphery.

5. The decoupled dual-band antenna of claim 4, wherein, The first radiation electrode comprises a first protruding part matched with a concave part between two adjacent branches of the "X"-like structure, and the first outer feeding pin and the first grounding through hole are sequentially arranged on the first protruding part.

6. The decoupled dual-band antenna of claim 5, wherein, The first inner feeding pin is arranged in a concave part of the second radiation electrode, and the concave part is formed by inwardly recessing two other adjacent branches of the "X"-like structure.

7. The decoupled dual-band antenna of claim 6, wherein, The first radiation electrode further comprises a second protruding part matched with the concave part, and the second protruding part is provided with a second grounding through hole.

8. The decoupled dual-band antenna of claim 3, wherein, The plane where the first outer feeding pin and the second outer feeding pin are located is parallel to the plane where the first inner feeding pin and the second inner feeding pin are located.

9. The decoupled dual-band antenna of claim 1, wherein, The isolation slot is arranged in a symmetrical zigzag shape.

10. A decoupled dual-band antenna according to any one of claims 1-9, characterized in that The plane where the first outer feeding pin and the first inner feeding pin are located is provided with at least two grounding through holes, and the grounding through holes penetrate the first radiation electrode, the dielectric substrate and the lower layer radiation electrode.

Images