Multi-frequency antenna based on same substrate

Abstract

The utility model provides a multi-frequency antenna based on the same substrate, which comprises 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 a zigzag isolation slot; the first radiation electrode and the second radiation electrode are used for adapting to different frequency band requirements, the first outer feed needle sequentially penetrates through the upper radiation electrode, the dielectric substrate, the lower radiation electrode and the reflecting layer, and the upper end of the first outer feed needle is electrically connected with the first radiation electrode. Through the ingenious design of the sawtooth-shaped isolation slot, the first radiation electrode and the second radiation electrode, the purpose of structure compactness is achieved, meanwhile, the arrangement of the sawtooth-shaped isolation slot effectively expands the adjustable range of the frequencies of the inner layer and the outer layer of the antenna, the frequency response characteristic of the antenna is optimized, the signal transmission efficiency is remarkably improved, and the service life of the antenna is prolonged. Therefore, the practical application requirements in various complex communication scenes can be met in an omnibearing manner.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna technical field and particularly relates to a multi-frequency antenna based on same base body. BACKGROUND

[0002] With the rapid development of communication technology, the performance requirements of antennas are increasingly improved, and the traditional single-frequency antenna has been difficult to meet the demand of simultaneous operation of multiple communication frequency bands. In fields such as 5G communication and Internet of Things, devices need to stably and efficiently transmit signals under different frequency bands, therefore, it is urgent to develop antennas that can adapt to multiple frequency bands. However, the existing multi-frequency antennas often have problems such as complex structure, large size, poor frequency band adaptation, and low signal transmission efficiency, which limit their wide application. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a multi-frequency antenna based on the same base body to solve the above problems existing in the prior art multi-frequency antenna, realize the goal of compact structure, accurate frequency band adaptation and efficient signal transmission, and meet the use requirements in various communication scenarios.

[0004] The utility model provides a kind of multi-frequency antenna based on same base body, the multi-frequency antenna includes first outer feed needle, upper layer radiation electrode, dielectric base body, lower layer radiation electrode and reflection layer, upper layer radiation electrode is provided with first radiation electrode and second radiation electrode separated by sawtooth-shaped isolation slot, first radiation electrode and second radiation electrode are used to adapt different frequency band requirements, first outer feed needle is in turn through upper layer radiation electrode, dielectric base body, lower layer radiation electrode and reflection layer, and its upper end is electrically connected with first radiation electrode.

[0005] In the above technical solution, the first outer feed needle penetrates multiple components and connects the first radiation electrode, and the upper layer radiation electrode is divided into electrodes adapted to different frequency bands by slot, to realize the multi-frequency band signal processing function on the same base body.

[0006] 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 the center to the periphery. The second radiation electrode adopts a center-symmetric "X"-like structure, which has four branches, which helps to optimize the electromagnetic performance of the antenna and enhance the signal radiation effect.

[0007] Still further, the ends of the first branch, the second branch, the third branch and / or the fourth branch are provided with recessed holes and protruding positions adapted to the sawtooth-shaped isolation slots. The recessed holes and protruding positions at the ends of the branches are adapted to the sawtooth-shaped isolation slots, which can make the antenna structure more stable and facilitate the adjustment of frequency band characteristics.

[0008] Further, the first radiating electrode is provided with a receiving groove matching the "X"-like structure, and the center of the receiving groove overlaps the center of the "X"-like structure. The receiving groove of the first radiating electrode matches the "X"-like structure and the centers overlap, which can accurately match the electromagnetic characteristics of the two, and improve the multi-frequency adaptation accuracy of the antenna.

[0009] Further, the first radiating electrode includes a first protruding part matching a "U"-shaped slot between two branches adjacent to the "X"-like structure, and the first outer feeding needle is arranged on the first protruding part. The first protruding part of the first radiating electrode matches the "U"-shaped slot and the first outer feeding needle is arranged, which optimizes the signal access point and is beneficial to improve the signal transmission efficiency of the first radiating electrode.

[0010] Further, the multi-frequency antenna is also provided with a center through hole, the distance d1 from the center through hole to the first outer feeding needle, and the distance d2 from the center through hole to the edge of the first radiating electrode, which satisfies d1≥1 / 2*d2. The center through hole maintains a specific distance relationship with the first outer feeding needle and the edge of the first radiating electrode, which can ensure that the electromagnetic distribution inside the antenna is reasonable and the performance of the antenna is stable.

[0011] Further, the second radiating electrode is also provided with a first inner feeding needle and / or a second inner feeding needle, and the distance d3 from the center through hole to the first inner feeding needle and / or the second inner feeding needle is less than the distance d4 from the center through hole to the smallest edge of the first radiating electrode. The inner feeding needle arranged in the second radiating electrode and maintaining a specific distance with the center through hole is helpful to accurately adjust the signal of the second radiating electrode and improve the adaptability of the antenna to different frequency bands.

[0012] Further, the multi-frequency antenna also includes a second outer feeding needle, and 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. The plane where the first and second outer feeding needles are located is parallel to the plane where the first and second inner feeding needles are located, which can reduce signal interference in the feeding process and enhance the stability of multi-frequency operation of the antenna.

[0013] Further, the upper layer radiating electrode, the lower layer radiating electrode and the sawtooth-shaped isolation slot are geometrically symmetrical. The upper layer radiating electrode, the lower layer radiating electrode and the sawtooth-shaped isolation slot are geometrically symmetrical, which makes the overall electromagnetic distribution of the antenna uniform and improves the consistency of the antenna radiation performance.

[0014] Further, the multi-frequency antenna is also provided with a grounding through hole, and the grounding through hole penetrates the upper layer radiating electrode, the dielectric substrate and the lower layer radiating electrode. The arrangement of the grounding through hole effectively guarantees the electrical grounding stability of the antenna, reduces the electrostatic interference and signal transmission loss, and improves the overall performance.

[0015] Further, the size of the dielectric substrate is greater than the size of the upper layer radiating electrode and / or the lower layer radiating electrode. The size of the dielectric substrate is greater than the size of the upper layer and / or the lower layer radiating electrode, which can provide good support for the components of the antenna and optimize the electromagnetic environment to ensure the performance of the antenna.

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

[0017] 1. The upper layer radiation electrode is divided into the first radiation electrode and the second radiation electrode by the sawtooth-shaped isolation groove, both of which are adapted to different frequency band requirements, solving the problem of poor frequency band adaptability of the existing multi-frequency antenna, enabling multi-frequency signal processing on the same base body, meeting the needs of various communication scenarios, simplifying the production process, reducing the cost, and being conducive to mass application of the multi-frequency positioning antenna.

[0018] 2. The upper layer radiation electrode, the lower layer radiation electrode and the sawtooth-shaped isolation groove adopt geometrically symmetrical shapes, making the overall electromagnetic distribution of the antenna uniform, improving the consistency of the antenna radiation performance, and further enhancing the signal transmission quality.

[0019] 3. The central symmetrical structure of the second radiation electrode in the shape of "X" increases the radiation coverage range, making the electromagnetic performance of the antenna more consistent in each direction and improving the stability and directivity of the radiation.

[0020] 4. The application realizes the design of a multi-frequency antenna with stable electrical performance. First, the specific distance between the center through hole, the first outer feed pin and the edge of the first radiation electrode ensures reasonable internal electromagnetic distribution and maintains stable antenna performance. Second, the distance between the inner feed pin of the second radiation electrode and the center through hole is conducive to precise signal adjustment and enhances frequency band adaptability. Finally, the planes where the outer and inner feed pins are located are parallel, reducing feed interference and enhancing the stability of multi-frequency operation.

[0021] 5. The multi-frequency antenna of the application optimizes electromagnetic performance and radiation effect through the "X"-shaped structure. The groove hole and the protruding part at the branch end are adapted to the sawtooth-shaped isolation groove, not only making the antenna structure connection more stable, but also effectively adjusting the frequency band characteristics. The accommodating groove of the first radiation electrode is precisely adapted to the protruding part, improving the signal transmission efficiency.

[0022] 6. The application can produce a variety of multi-frequency antennas with different feed forms such as single feed, double feed and four feed by arranging the number of feed pin holes. BRIEF DESCRIPTION OF DRAWINGS

[0023] 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 serve the purpose of explaining the principles of the utility model. Other embodiments and many of the intended advantages of the embodiments will be readily appreciated as they become 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 numbers designate corresponding similar parts.

[0024] Figure 1 is a structure diagram of a multi-frequency antenna based on the same base body according to the present application;

[0025] Figures 2a-2b is a top view and a sectional view in A-A direction of a multi-frequency antenna based on the same base body according to the present application;

[0026] Figure 3 is a structure diagram of an upper layer radiation electrode according to the present application;

[0027] Figures 4a-4b is a structure diagram of a first radiation electrode and a second radiation electrode according to the present application;

[0028] Figure 5 is a structure diagram of a lower layer radiation electrode according to the present application;

[0029] Figure 6 is a structure diagram of a dielectric base body according to the present application;

[0030] Meaning of each number in the figure: 100-inner feeding needle, 200-outer feeding needle, 300-upper layer radiation electrode, 400-dielectric base body, 500-lower layer radiation electrode, 600-reflective 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-sawtooth-shaped isolation slot, 3021-first branch, 3022-second branch, 3023-third branch, 3024-fourth branch, 3025-groove hole, 3026-protrusion bit, 3027-“U”-shaped slot bit, 3011-first protruding part, 3012-second protruding part, 3013-third protruding part, 3014-fourth protruding part, 3015-receiving groove, 701-first ground via, 702-second ground via, 703-third ground via, 704-fourth ground via. DETAILED DESCRIPTION

[0031] 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 reference to the orientation of the described figures. Because embodiments can be positioned in a number of different orientations, the directional terms to be construed in light of the drawings. It is to be understood that other embodiments can be utilized and logical and / or practical 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.

[0032] The utility model provides a kind of multi-frequency antenna based on same base body, reference Figure 1 And Figures 2a-2b , Figure 1 And Figures 2a-2b It respectively shown that the structure diagram of multi-frequency antenna based on same base body according to the utility model, plan view and the section view of A-A direction, as shown in the figure, multi-frequency antenna includes outer feed needle 200, upper layer radiation electrode 300, dielectric base body 400, lower layer radiation electrode 500 and reflection layer 600, outer feed needle 200 is connected through upper layer radiation electrode 300, dielectric base body 400, lower layer radiation electrode 500 until reflection layer 600, upper layer radiation electrode 300 is equipped with first radiation electrode 301 and second radiation electrode 302 that are divided by sawtooth-shaped isolation slot gap 303, and first radiation electrode 301 and second radiation electrode 302 are used to adapt different frequency band requirements. First outer feed needle 201 is in turn through upper layer radiation electrode 300, dielectric base body 400, lower layer radiation electrode 500 and reflection layer 600, and its upper end is electrically connected with first radiation electrode 301. Upper layer radiation electrode 300, lower layer radiation electrode 500 and reflection layer 600 are conductor, preferably, metal good conductor, the size of dielectric base body 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.

[0033] Specifically, the core role of sawtooth-shaped isolation slot gap 303 is to significantly increase the adjustable range of inner and outer layer frequency of antenna, by ingeniously changing the current distribution path of electrode surface, the precise adaptation of different frequency band signals is realized. It is worth mentioning that when the second radiation electrode part in sawtooth-shaped isolation slot gap 303 is removed, the resonant frequency of the whole antenna will be improved accordingly, which provides a convenient and effective means for flexible adjustment of antenna performance according to actual application scenarios, further expands the practicability and adaptability of the antenna of the utility model.

[0034] In some specific embodiments, in combination Figure 3 , Figure 3 It shows the structure diagram of upper layer radiation electrode of multi-frequency antenna based on same base body according to the utility model, as Figure 3 And shown in Figure 2, dual-frequency antenna further includes center through hole 800, by Figure 2b It is known that the distance from center through hole 800 to first outer feed needle 201 is d1, the distance from center through hole 800 to the edge of first radiation electrode 301 is d2, and d1≥1 / 2*d2 is satisfied. First inner feed needle 101 and / or second inner feed needle 102 are further arranged in second radiation electrode 302, the distance from center through hole 800 to first inner feed needle 101 and / or second inner feed needle 102 is d3, the distance from center through hole 800 to the minimum edge of first radiation electrode 301 is d4, and d3

[0035] In some particular embodiments, further reference is made to Figure 3 -4, Figure 4a and Figure 4bThe structure diagram of the first radiating electrode and the second radiating electrode of the multi-frequency antenna based on the same base body is shown respectively, as shown in the figure, the first radiating electrode 301 and the second radiating electrode 302 are divided by the sawtooth-shaped isolation slot 303. The second radiating electrode 302 presents a center-symmetrical "X"-like structure, which includes the first branch 3021, the second branch 3022, the third branch 3023 and the fourth branch 3024 extending along the center to the periphery, the geometric center of which overlaps with the center of the center through hole 800, and recessed holes 3025 and protruding bits 3026 adapted to the sawtooth-shaped isolation slot 303 are arranged at the ends of the first branch 3021, the second branch 3022, the third branch 3023 and the fourth branch 3024, so as to ensure the stability of the connection between them and the coordination of electromagnetic characteristics. The first radiating electrode 301 is provided with a containing groove 3015 matched with the "X"-like structure, and the geometric center of the containing groove 3015 overlaps with the center of the center through hole 800 and the geometric center of the "X"-like structure. The second radiating electrode 302 is installed on the containing groove 3015 through the center through hole 800, forming the sawtooth-shaped isolation slot 303. The first radiating electrode 301 is provided with the first protruding part 3011, the second protruding part 3012, the third protruding part 3013 and the fourth protruding part 3014 matched with the first branch 3021, the second branch 3022, the third branch 3023 and the fourth branch 3024. Among them, the first protruding part 3011 and the third protruding part 3013 are adjacently distributed, and along the extension direction of the center through hole 800, a first outer feed point hole for installing the first outer feed needle 201, a first ground through hole 701 are sequentially arranged on the first protruding part 3011, and a second outer feed point hole for installing the second outer feed needle 202, a third ground through hole 703 are sequentially arranged on the third protruding part 3013. The "U"-shaped groove bit 3027 corresponding to the inner recessed part of the third branch 3023 and the fourth branch 3024 of the second radiating electrode 302 is provided with a first inner feed point hole for installing the first inner feed needle 101, and the inner recessed part of the third branch 3023 and the first branch 3021 is provided with a second inner feed point hole for installing the second inner feed needle 102. The second protruding part 3012 and the first protruding part 3011 are symmetrically distributed, the third protruding part 3013 and the fourth protruding part 3014 are symmetrically distributed, and the second protruding part 3012 is adjacent to the third protruding part 3013 and the fourth protruding part 3014 respectively. The second protruding part 3012 is provided with a second ground through hole 702, and the fourth protruding part 3014 is provided with a fourth ground through hole 704. That is, the first outer feed point hole, the first ground through hole 701, the first inner feed hole point and the second ground through hole 702 are located in the same plane, and the second outer feed point hole, the third ground through hole 703, the second inner feed hole point and the fourth ground through hole 704 are in another specific plane.The plane containing the first external feed pin 201 and the second external feed pin 202 is parallel to the plane containing the first internal feed pin 101 and the second internal feed pin 101. This parallel structure design ensures the coordinated stability between different feed paths when the antenna is operating at multiple frequencies, effectively improving the reliability and efficiency of signal transmission.

[0036] Continue to refer to Figures 5-6 , Figures 5-6 The structural diagrams of the lower radiation electrode and the dielectric substrate of this utility model are shown respectively. As shown in the figure, holes or channels adapted to the first inner feed needle 101, the second inner feed needle 102, the first outer feed needle 201, the second outer feed needle 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 provided on the lower radiation electrode 500 and the dielectric substrate 400.

[0037] Obviously, those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this 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 described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. A multi-frequency antenna based on the same substrate, characterized in that, The antenna comprises a first feeding needle, 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 a sawtooth-shaped isolation slot, the first radiation electrode and the second radiation electrode are used to adapt to different frequency band requirements, the first feeding needle penetrates the upper layer radiation electrode, the dielectric substrate, the lower layer radiation electrode and the reflecting layer in sequence, and the upper end thereof is electrically connected with the first radiation electrode.

2. The multi-band antenna based on the same substrate according to claim 1, wherein, The second radiation electrode is a center-symmetrical "X"-like structure, the "X"-like structure comprises a first branch, a second branch, a third branch and a fourth branch which extend from the center to the periphery.

3. The multi-band antenna based on the same substrate according to claim 2, wherein, The end of the first branch, the second branch, the third branch and / or the fourth branch is provided with a groove and a protrusion which are adapted to the sawtooth-shaped isolation slot.

4. The multi-band antenna of claim 2, wherein the first and second radiating elements are disposed on the same substrate. The first radiation electrode is provided with an accommodating groove which is matched with the "X"-like structure.

5. The multi-band antenna of claim 3, wherein the first and second radiating elements are disposed on the same substrate. The first radiation electrode comprises a protruding part which is matched with the groove of two adjacent branches of the "X"-like structure, and the first feeding needle is arranged on the protruding part.

6. The multi-band antenna of claim 3, wherein the first and second radiating elements are disposed on the same substrate. The antenna is further provided with a center through hole, the center through hole is at a distance d1 from the first feeding needle, the center through hole is at a distance d2 from the edge of the first radiation electrode, and d1≥1 / 2*d2.

7. The multi-band antenna according to claim 6, wherein the first and second radiating elements are arranged in a coplanar configuration. The second radiation electrode is further provided with a second feeding needle, the center through hole is at a distance d3 from the second feeding needle, and the distance d3 is less than the distance d4 from the center through hole to the smallest edge of the second radiation electrode.

8. The multi-band antenna of claim 1, wherein the first and second radiating elements are disposed on the same substrate. The upper layer radiation electrode and / or the lower layer radiation electrode is a geometrically symmetrical shape.

9. The multi-band antenna of claim 1, wherein the first and second radiating elements are disposed on the same substrate. The multi-frequency antenna is further provided with a grounding through hole which penetrates the upper layer radiation electrode, the dielectric substrate and the lower layer radiation electrode.

10. The multi-band antenna of claim 1, wherein the first and second radiating elements are disposed on the same substrate. The size of the dielectric substrate is greater than the size of the upper layer radiation electrode and / or the lower layer radiation electrode.

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