Antenna and electronic device

Abstract

The present disclosure relates to the technical field of antennas, and provides an antenna and an electronic device, which can solve the problem in the prior art of the severe coupling effect of digital indoor distribution antennas resulting in an increase in pattern non-circularity. The antenna of the present disclosure comprises a carrier substrate (10) and a plurality of radiating elements disposed on the carrier substrate (10), at least some of the radiating elements operating at different frequencies. The antenna further comprises an isolation structure (3) disposed on the carrier substrate (10) and located between two adjacently arranged radiating elements operating at different frequencies. The isolation structure (3) comprises a first dielectric substrate (3-1) disposed on the carrier substrate (10) and at least one isolation layer; the first dielectric substrate (3-1) has a first surface and a second surface that face the radiating elements and are arranged opposite each other, and the isolation layer is disposed on at least one of the first surface and the second surface. The antenna of the present disclosure has low pattern non-circularity and excellent radiation performance.

Description

Antennas and electronic devices Technical Field

[0001] This disclosure belongs to the field of antenna technology, specifically relating to an antenna and an electronic device. Background Technology

[0002] Currently, 5G macro base station construction has reached a certain scale, achieving fairly wide-area coverage. Subsequent construction will gradually shift its focus to indoor and densely populated areas. Industry experts predict that approximately 80% of network applications in the 5G era will occur indoors, such as in stadiums, shopping malls, and schools. To improve data throughput, enhance the online experience for consumers, and meet the demands of high-data-volume terminals such as Virtual Reality (VR) and Augmented Reality (AR), it is crucial to prioritize the development of indoor network coverage and throughput.

[0003] In the construction of indoor network distribution systems, indoor distributed antennas are one of the important components for achieving communication network coverage. In recent years, digital indoor distributed terminals, which have experienced rapid development, have gradually gained favor in the industry. They have multiple transmit and receive capabilities and can accommodate multiple antenna components within a limited space, thus meeting the communication needs of multiple users simultaneously.

[0004] However, as digital indoor distribution terminals become increasingly smaller, the space available for their internal antennas becomes limited, leading to a more compact arrangement and more pronounced coupling between them. This coupling significantly impacts antenna performance, such as standing wave ratio (SWR) and radiation pattern non-circularity. As a core antenna performance indicator, radiation pattern non-circularity directly affects coverage. High non-circularity results in localized signal blind spots within the antenna's coverage area, impacting signal reception and transmission efficiency and consequently affecting user experience. Therefore, for multi-transmitter / multi-receiver digital indoor distribution terminals, targeted antenna structure design is necessary to improve radiation performance.

[0005] Summary of the Invention

[0006] The present invention aims to at least solve one of the technical problems existing in the prior art. In one aspect, it provides an antenna, which includes a carrier substrate and a plurality of vibrators disposed on the carrier substrate; at least some of the vibrators operate at different frequencies; wherein, the antenna further includes an isolation structure disposed on the carrier substrate between two adjacent vibrators with different operating frequencies; the isolation structure includes a first dielectric substrate disposed on the carrier substrate and at least one isolation layer; the first dielectric substrate has a first surface and a second surface facing the vibrators and disposed opposite to each other, and the isolation layer is disposed on at least one of the first surface and the second surface.

[0007] In some examples, the isolation layer has a plurality of first perforated patterns spaced apart along its length.

[0008] In some examples, the first cutout pattern is a rectangular opening, the ratio of its length along the width of the isolation layer to the width of the isolation layer is 0.3-0.65.

[0009] In some examples, the first perforated pattern is annular, and the ratio of the length of the inner diameter of the annular pattern along the width direction of the isolation layer to the width of the isolation layer is 0.11-0.43; the ratio of the length of the outer diameter of the annular pattern along the width direction of the isolation layer to the width of the isolation layer is 0.3-0.65.

[0010] In some examples, the oscillator includes a feed structure and a radiating electrode connected to the feed structure; the radiating electrode includes a radiating body and a connecting portion connected to the feed structure; the connecting portion is narrower the closer it is to the feed structure.

[0011] In some examples, the radiating body has a second perforated pattern.

[0012] In some examples, the radiating body includes a first side and a second side disposed opposite to each other, and a first bottom side opposite to the connecting portion; the first bottom side is connected to the first side and the second side via a first connecting edge and a second connecting edge, respectively; the angle between the first connecting edge and the first side and the angle between the first connecting edge and the first bottom side are obtuse angles; the angle between the second connecting edge and the second side and the angle between the second connecting edge and the first bottom side are obtuse angles.

[0013] In some examples, the antenna further includes a boss structure disposed on the carrier substrate; the boss structure includes a third surface and a fourth surface disposed opposite each other, and a connecting side surface connecting the third surface and the fourth surface; the third surface is closer to the carrier substrate than the fourth surface; the feeding structure includes at least a signal electrode disposed on the fourth surface and extending via the connecting side surface to and connected to the radiating electrode.

[0014] In some examples, the power supply structure further includes a first reference electrode and a second reference electrode disposed on opposite sides of the signal electrode extension direction; both the first reference electrode and the second reference electrode extend from the fourth surface to the carrier substrate via the connecting side; the power supply structure further includes a first branch disposed on the carrier substrate and connected to the first reference electrode, and a second branch connected to the second reference electrode.

[0015] In some examples, the antenna further includes a third dielectric substrate on which the feed structure and the radiating electrode are disposed; the third dielectric substrate is divided into a first region and a second region; the feed structure is located in the first region, and the radiating electrode is located in the second region; the first region covers at least a portion of the location of the boss structure; the third dielectric substrate is provided with a first slit opening and a second slit opening located between the first region and the second region; the first slit opening is located between the first reference electrode and the first branch and the radiating electrode; the second slit opening is located between the second reference electrode and the second branch and the radiating electrode.

[0016] In some examples, the plurality of oscillators includes a first oscillator and a second oscillator, and the operating frequency of the first oscillator is lower than the operating frequency of the second oscillator; the radiation electrode of the first oscillator further includes a third branch opposite to the first branch and a fourth branch opposite to the second branch, and both the third branch and the fourth branch are connected to the radiation electrode.

[0017] In some examples, the first oscillator further includes a reflective structure disposed on the side of the radiating electrode opposite to the carrier substrate; the reflective structure includes a second dielectric substrate opposite to the carrier substrate, and a reflective layer disposed on the second dielectric substrate, the reflective layer having a first opening extending through its thickness direction.

[0018] In some examples, the reflective structure has a first notch at a position corresponding to the signal electrode.

[0019] In some examples, the material of the first dielectric substrate includes resin.

[0020] In a second aspect, the present invention provides an electronic device comprising the antenna described in any of the above examples. Attached Figure Description

[0021] Figure 1A is a schematic diagram of the antenna structure including only the first element;

[0022] Figure 1B shows the radiation pattern non-circularity result of the first element in the antenna shown in Figure 1A.

[0023] Figure 2A is a schematic diagram of the antenna structure including only the second element;

[0024] Figure 2B shows the radiation pattern non-circularity result of the second element of the antenna shown in Figure 2A.

[0025] Figure 3A is a schematic diagram of the antenna structure, including the first element and the second element.

[0026] Figure 3B shows the radiation pattern non-circularity result of the first element in the antenna shown in Figure 3A.

[0027] Figure 3C shows the radiation pattern non-circularity result of the second element in the antenna shown in Figure 3A.

[0028] Figure 4A is a schematic diagram of the first type of isolation structure;

[0029] Figure 4B is a diagram showing the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 4A.

[0030] Figure 4C shows the result of the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 4A.

[0031] Figure 5A shows a first example of a second type of isolation structure provided in an embodiment of this disclosure;

[0032] Figure 5B is a diagram showing the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 5A.

[0033] Figure 5C shows the result of the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 5A.

[0034] Figure 6A shows a second example of a second type of isolation structure provided in an embodiment of this disclosure;

[0035] Figure 6B is a diagram showing the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 6A.

[0036] Figure 6C shows the result of the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 6A.

[0037] Figure 7A is a schematic diagram of opening the first hollow pattern in the first isolation layer of the isolation structure in Figure 5A;

[0038] Figure 7B shows the radiation pattern non-circularity result of the first element in the antenna shown in Figure 7A.

[0039] Figure 7C shows the radiation pattern non-circularity result of the second element in the antenna shown in Figure 7A.

[0040] Figure 8A is a schematic diagram of opening the first hollow pattern in the first isolation layer of the isolation structure in Figure 6A;

[0041] Figure 8B is a diagram showing the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 8A.

[0042] Figure 8C shows the result of the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 8A.

[0043] Figure 9 shows examples of several shapes for the first hollowed-out pattern;

[0044] Figures 10A and 10C are schematic diagrams of the structure of the first oscillator according to an embodiment of this disclosure;

[0045] Figures 10B and 10D are schematic diagrams of the structure of the second oscillator according to an embodiment of this disclosure;

[0046] Figure 10E is a plan view of the third dielectric substrate;

[0047] Figure 10F is a schematic diagram of a third dielectric substrate with a feeding structure and a radiating electrode partially covering the boss structure.

[0048] Figures 11A and 11B are schematic diagrams of the structures of the two types of radiating main bodies;

[0049] Figure 12 is a schematic diagram of the reflection structure according to an embodiment of the present disclosure;

[0050] Figure 13A is a schematic diagram of the first dielectric substrate and the second dielectric substrate being an integral structure;

[0051] Figure 13B shows the result of the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 13A.

[0052] Figure 13C shows the result of the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 13A.

[0053] The attached figures are labeled as follows:

[0054] 1. First oscillator; 2. Second oscillator; 3. Isolation plate; 11. First boss; 21. Second boss; 10. Support substrate; 12. Reflective structure; 3-1. First dielectric substrate; 3-2. First isolation layer; 3-4. First hollow pattern; 3-3. Second isolation layer; 4-1. Second dielectric substrate; 4-2. Reflective layer; 801. Feeding structure; 802. Radiation electrode; 801-1. Signal electrode; 801-2. First reference electrode; 801-3. Second reference electrode; 801-4. First branch; 801-5. Second branch; 801-6. Third branch; 801-7. Fourth branch Branch; 802-1, Connecting part; 802-2, Radiation main body part; 206, Second hollow pattern; 4-3, First notch; 4-4, First opening; 4-5, First connecting part; 4-6, Second connecting part; 30, First ring; 31, Second ring; 33, Second rectangular opening; 34, Third ring; 35, Second opening; 36, First strip; 37, Third rectangular opening; 38, Fourth rectangular opening; 39, Second cross structure; 803-Third dielectric substrate; 803-1, First slit opening; 803-2, Second slit opening; 901, First region; 902, Second region. Detailed Implementation

[0055] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0057] As used herein, “parallel” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°.

[0058] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0059] This document describes exemplary embodiments with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0060] A digital indoor distributed system (DIS) is a system used to provide indoor wireless communication coverage. It is typically used in large buildings, commercial centers, hospitals, office buildings, and stadiums—places with high foot traffic or demand—to expand indoor wireless signal coverage and enhance signal capacity. The digital indoor distributed terminal is the core terminal device in a DIS. Its main function is to receive wireless signals from the base station, amplify them, and distribute them to various coverage areas indoors to ensure stable wireless communication. A DIS terminal generally includes components such as antennas, signal amplifiers, distributors, and filters. To meet the transmission requirements of different wireless communication standards and frequency bands, the antenna typically includes multiple elements operating at different frequencies.

[0061] As digital indoor distribution terminals become smaller, the space reserved for transducers operating at different frequency bands becomes increasingly smaller, resulting in more compact spacing between transducers. Consequently, the mutual influence and interaction between adjacent transducers become more pronounced, leading to a more severe coupling effect. This coupling effect can cause two main problems: firstly, it can lead to signal interference between adjacent transducers, reducing signal power and affecting communication quality; secondly, it can cause changes in the radiation pattern of the transducers, resulting in distortion of the radiation pattern. This distortion manifests as a shift in the direction of the main lobe and irregular changes in the radiation pattern; in other words, it increases the non-circularity of the transducer's radiation pattern.

[0062] The non-circularity of an antenna pattern is typically calculated using the main lobe directivity coefficient. The main lobe directivity coefficient describes the directivity of the antenna's main lobe; a larger value indicates a more concentrated main lobe directivity and a pattern closer to an ideal circle. Simply put, a larger main lobe directivity coefficient means a closer-to-ideal circular pattern and less non-circularity; conversely, a smaller coefficient indicates greater non-circularity. As a core antenna indicator, non-circularity directly affects the antenna's coverage area. Higher non-circularity means signal dead zones exist within the antenna's coverage area, affecting the antenna's radiation direction and coverage range, and ultimately degrading the communication performance of digital indoor distribution terminals.

[0063] To address at least one of the related technical problems, this disclosure provides an antenna comprising a carrier substrate and a plurality of vibrators disposed on the carrier substrate, wherein at least some of the vibrators operate at different frequencies.

[0064] In this embodiment of the disclosure, the technical solution is described using an antenna comprising two types of vibrators with different operating frequencies as an example. The vibrator with a first operating frequency is referred to as the first vibrator, and the vibrator with a second operating frequency is referred to as the second vibrator, wherein the first operating frequency is less than the second operating frequency. For example, the operating frequency of the first vibrator is 2320MHz-2370MHz, and the operating frequency of the second vibrator is 2515MHz-2675MHz.

[0065] To clarify the effect of the coupling effect between the first and second elements on their respective radiation pattern non-circularity when the first and second elements are arranged adjacently, this disclosure tested the radiation pattern non-circularity of antennas including only the first element, antennas including only the second element, and antennas including both the first and second elements. The test results are described in detail below.

[0066] Figure 1A is a schematic diagram of an antenna including only the first element; Figure 1B is a diagram showing the non-circularity of the radiation pattern of the first element in the antenna shown in Figure 1A. Figure 2A is a schematic diagram of an antenna including only the second element; Figure 2B is a diagram showing the non-circularity of the radiation pattern of the second element in the antenna shown in Figure 2A. Figure 3A is a schematic diagram of an antenna including both the first and second elements; Figure 3B is a diagram showing the non-circularity of the radiation pattern of the first element 1 in the antenna shown in Figure 3A; Figure 3C is a diagram showing the non-circularity of the radiation pattern of the second element 2 in the antenna shown in Figure 3A.

[0067] The antenna shown in Figure 1A specifically includes a carrier substrate 10 and a first element 1 disposed on the carrier substrate 10. The antenna shown in Figure 2A specifically includes a carrier substrate 10 and a second element 2 disposed on the carrier substrate 10. In both Figure 1A and Figure 2A, the carrier substrate 10 can be rectangular, and both the first element 1 and the second element 2 generally include a feed structure 801 and a radiating electrode 802, with the feed structure 801 connected to the radiating electrode 802. Regarding the placement, the first element 1 can be disposed at an angle of the carrier substrate 10 or near the center of either side; Figure 1A shows an example where the first element 1 is disposed at an angle of the carrier substrate 10. The second element 2 can be disposed near the center of either side of the carrier substrate 10, as shown in Figure 2A. Of course, the shape of the carrier substrate 10 can be determined according to the structure of the digital indoor distribution terminal, such as circular or other shapes; the placement of the first element 1 or the second element 2 can also be adjusted appropriately according to requirements, and this application does not impose any limitations on this.

[0068] As can be seen from the non-circularity of the radiation pattern of the first element 1 shown in Figure 1B, when the antenna includes only the first element 1, its radiation pattern non-circularity at 120° can be controlled within ±3dB. Specifically, the radiation pattern non-circularity of the first element 1 is approximately ±2.86dB. As can be seen from the non-circularity of the radiation pattern of the second element 1 shown in Figure 2B, when the antenna includes only the second element 2, its radiation pattern non-circularity at 120° can be controlled within ±3dB. The radiation pattern non-circularity of the second element 2 is approximately ±1.6dB. Therefore, when the antenna includes only the first element 1 or only the second element 2, that is, when the first element 1 or the second element 2 is not affected by the coupling effect of other elements, its radiation pattern non-circularity can be controlled within ±3dB.

[0069] The antenna shown in Figure 3A includes both a first element 1 and a second element 2. One first element 1 is located at the angle formed by the two sides of the supporting substrate 10, and the two second elements 2 are respectively disposed in the middle region near these two sides. As shown in Figure 3B, when the antenna includes both first elements 1 and second elements 2, and the first elements 1 and second elements 2 are arranged alternately, due to the coupling effect of the second elements 2, the non-circularity of the radiation pattern of the first element 1 exceeds ±3dB; specifically, the non-circularity of the radiation pattern of the first element 1 is as high as ±4.56dB. Similarly, as shown in Figure 3C, due to the coupling effect of the first elements 1, the non-circularity of the radiation pattern of the second element 2 also exceeds ±3dB; specifically, the non-circularity of the radiation pattern of the second element 2 is as high as ±3.70dB.

[0070] Comparing the results in Figure 3B with those in Figure 1B, and comparing the results in Figure 3C with those in Figure 2B, it can be observed that when the antenna includes multiple elements with different operating frequencies, the coupling effect between two adjacent elements with different operating frequencies is strong. This coupling effect significantly affects the non-circularity of the radiation patterns of both elements, severely impacting the antenna's radiation performance. To reduce the coupling effect between adjacent elements, this disclosure proposes a scheme of setting an isolation structure between two adjacent elements with different operating frequencies.

[0071] The isolation structures disclosed herein generally fall into two categories: the first category includes only one isolation layer directly disposed on the carrier substrate 10; the second category includes a first dielectric substrate disposed on the carrier substrate 10 and at least one isolation layer, wherein the first dielectric substrate has a first surface and a second surface facing the oscillator and disposed opposite to each other, and an isolation layer is disposed on at least one of the first surface and the second surface. The second category may further include the following two cases: the first case is that the first isolation layer is disposed on the first surface of the first dielectric substrate; the second case is that the first isolation layer is disposed on the first surface of the first dielectric substrate, and a second isolation layer is disposed on the second surface of the first dielectric substrate.

[0072] In the aforementioned isolation structure, the isolation layer can be made of a metal or alloy with good ductility and conductivity, such as copper, aluminum, or aluminum alloy. The first dielectric substrate can be made of a material with a relatively high dielectric constant, such as resin; for example, the first dielectric substrate can be made of acrylonitrile butadiene styrene copolymer (ABS), polycarbonate (PC), or glass fiber reinforced epoxy resin composite material (Flame Retardant 4, FR4). The thickness of the first dielectric substrate can be 0.2mm-2mm. Furthermore, the first dielectric substrate can be fixed to the carrier substrate 10 by adhesive; or, a slot can be provided on the carrier substrate 10, and the first dielectric substrate can be fixed to the carrier substrate 10 by the slot; or, in some examples, the carrier substrate 10 is provided with reinforcing ribs, which can be directly reused as the first dielectric substrate, thus further improving the antenna integration.

[0073] The following section will continue using the antenna shown in Figure 3A as an example, specifically an antenna comprising one first element 1 and two second elements 2, to illustrate several examples of the isolation structures provided in the embodiments of this disclosure. It should be noted that, in the structure shown in Figure 3A where the two second elements 2 are located on either side of the first element 1, an isolation structure is provided between the first element 1 and each second element 2; that is, there are two isolation structures. In this case, the two isolation structures can be connected as one unit, which simplifies manufacturing and subsequent installation steps.

[0074] Figure 4A is a schematic diagram of the first type of isolation structure; Figure 4B is a result of the non-circularity of the radiation pattern of the first oscillator 1 after adopting the isolation structure shown in Figure 4A; Figure 4C is a result of the non-circularity of the radiation pattern of the second oscillator 2 after adopting the isolation structure shown in Figure 4A. As shown in Figure 4A, the first type of isolation structure 3 includes only one isolation layer. To ensure the stability of the isolation structure 3, the thickness of this single isolation layer needs to be set to 0.2mm-1.5mm. As can be seen from Figure 4B, by adding the isolation structure 3 shown in Figure 4A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the first oscillator 1 decreases from ±4.56dB as shown in Figure 3B to ±2.92dB; as can be seen from Figure 4C, by adding the isolation structure 3 shown in Figure 4A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the second oscillator 2 decreases from ±3.70dB as shown in Figure 3C to ±2.53dB.

[0075] As can be seen, by setting the isolation structure 3 shown in Figure 4A between two adjacent elements at different frequencies, the non-circularity of the radiation pattern of the two adjacent elements can be reduced to a certain extent, which helps to improve the radiation performance of the antenna. However, since the first type of isolation structure 3 only includes one isolation layer, in order to achieve a stable setting of the isolation layer, it is usually necessary to increase the thickness of the isolation layer, which leads to an increase in the weight and cost of the isolation structure 3.

[0076] The second type of isolation structure 3 disclosed herein solves the problems existing in the first type of isolation structure 2. As described above, the second type of isolation structure 3 includes a first dielectric substrate disposed on a carrier substrate 10 and at least one isolation layer. The first dielectric substrate has a first surface and a second surface facing the oscillator and disposed opposite to each other, and an isolation layer is disposed on at least one of the first surface and the second surface. This type of isolation structure 3 includes two cases: the first case is that the first isolation layer is disposed on the first surface of the first dielectric substrate, as shown in Figures 5A and 6A; the second case is that the first isolation layer is disposed on the first surface of the first dielectric substrate, and a second isolation layer is disposed on the second surface of the first dielectric substrate, as shown in Figure 8A. Regardless of whether it is the first isolation layer or the second isolation layer, it can be made of a metal with good conductivity and ductility, and the thickness can be set to 0.01mm-0.05mm. For the isolation structure 3 shown in Figure 4A, which only includes a single isolation layer, the thickness of the isolation layer needs to be set to 0.2mm-1.5mm. Therefore, compared with the first type of isolation structure 3, the second type of isolation structure 3 can have a much smaller isolation layer thickness due to the presence of the first dielectric substrate 3-1, thereby saving material costs and reducing the overall weight of the antenna, which helps to achieve the lightweighting of the antenna.

[0077] The first scenario and its beneficial effects will be described in detail below.

[0078] Figure 5A is an example diagram of an isolation structure including a first dielectric substrate and an isolation layer. Referring to Figure 5A, the isolation structure 3 includes a first dielectric substrate 3-1 and a first isolation layer 3-2. The first dielectric substrate 3-1 includes a second surface facing the first oscillator 1 and a first surface facing the second oscillator 2. The first isolation layer 3-2 is disposed on the first surface and faces the second oscillator 2. The width of the first isolation layer 3-2 can be set to 5mm-12mm, and the length can be determined according to the length of the first oscillator 1 and the second oscillator 2. In this example, the thickness of the first dielectric substrate 3-1 can be set to 0.2mm-2mm, and the thickness of the first isolation layer 3-2 can be set to 0.01mm-0.05mm.

[0079] Figure 5B shows the result of the non-circularity of the radiation pattern of the first oscillator 1 after adopting the isolation structure 3 shown in Figure 5A; Figure 5C shows the result of the non-circularity of the radiation pattern of the second oscillator 2 after adopting the isolation structure 3 shown in Figure 5A. As can be seen from Figure 5B, by adding the isolation structure 3 shown in Figure 5A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the first oscillator 1 decreases from ±4.56dB shown in Figure 3B to ±2.92dB; as can be seen from Figure 5C, by adding the isolation structure 3 shown in Figure 5A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the second oscillator 2 decreases from ±3.70dB shown in Figure 3B to ±2.40dB. It should be noted that, as can be seen from the above, after adopting the isolation structure 3 shown in Figure 4A, which only includes a single-layer isolation layer, the non-circularity of the radiation pattern of the second oscillator 2 decreases to ±2.53dB; while after adding the isolation structure 3 shown in Figure 5A, which includes a first dielectric substrate 3-1 and a first isolation layer 3-2, the non-circularity of the radiation pattern of the second oscillator 2 further decreases to ±2.40dB.

[0080] As can be seen, the isolation structure 3 in Figure 5A, which includes a first dielectric substrate 3-1 and a first isolation layer 3-2, can achieve at least the following beneficial effects: 1. Compared with the first type of isolation structure 3, it can further improve the non-circularity of the radiation pattern of the second oscillator 2, thereby better improving the radiation range and performance of the antenna and improving the communication quality; 2. Compared with a single-layer isolation layer, the second type of isolation structure 3, by adding a first dielectric substrate 3-1 and placing the first isolation layer 3-2 on the first surface of the first dielectric substrate 3-1, can effectively reduce the thickness of the first isolation layer 3-2, thereby reducing manufacturing costs and overall weight, and helping to achieve product lightweighting.

[0081] It should be noted that Figure 5A is only one example of the isolation structure 3 including the first dielectric substrate 3-1 and an isolation layer. Those skilled in the art should understand that placing the first isolation layer 3-2 in Figure 5A on the second surface of the first dielectric substrate 3-1 so that it faces the first oscillator 1 is another example of the same inventive concept as the example shown in Figure 5A, in which the first isolation layer 3-2 is placed on the first surface of the first dielectric substrate 3-1 so that it faces the second oscillator 2. It can achieve the same beneficial effect as the example shown in Figure 5A, and will not be described in detail here.

[0082] The second scenario and its beneficial effects will be discussed in detail below.

[0083] Figure 6A is a schematic diagram of an isolation structure including a first dielectric substrate and two isolation layers. As shown in Figure 6A, the isolation structure 3 includes a first dielectric substrate 3-1, a first isolation layer 3-2 attached to a first surface of the first dielectric substrate 3-1, and a second isolation layer 3-3 attached to a second surface of the first dielectric substrate 3-1. The first isolation layer 3-2 faces the second oscillator 2, and the second isolation layer 3-3 faces the first oscillator 1. In this example, the thickness of the first dielectric substrate 3-1 can be set to 0.2mm-2mm, and the thicknesses of both the first isolation layer 3-2 and the second isolation layer 3-3 can be set to 0.01mm-0.05mm.

[0084] Figure 6B shows the result of the non-circularity of the radiation pattern of the first oscillator 1 after adopting the isolation structure 3 shown in Figure 6A; Figure 6C shows the result of the non-circularity of the radiation pattern of the second oscillator 2 after adopting the isolation structure 3 shown in Figure 6A. As can be seen from Figure 6B, by adding the isolation structure 3 shown in Figure 6A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the first oscillator 1 decreases from ±4.56dB as shown in Figure 3B to ±2.59dB; as can be seen from Figure 6C, by adding the isolation structure 3 shown in Figure 6A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the second oscillator 2 decreases from ±3.70dB as shown in Figure 3B to ±2.59dB. It should be noted that, as can be seen from the above, after adopting the isolation structure 3 shown in Figure 4A, which only includes a single-layer isolation layer, the non-circularity of the radiation pattern of the first oscillator 1 decreases to ±2.92dB; after adding the isolation structure 3 shown in Figure 5A, which includes a first dielectric substrate 3-1 and a first isolation layer 3-2, the non-circularity of the radiation pattern of the first oscillator 1 also decreases to ±2.92dB; and after adopting the isolation structure 3 shown in this example, which includes a first dielectric substrate 3-1, a first isolation layer 3-2, and a second isolation layer 3-3, the non-circularity of the radiation pattern of the first oscillator 1 is further reduced to ±2.59dB.

[0085] As can be seen, in the above example, by setting an isolation structure 3 including a first dielectric substrate 3-1, a first isolation layer 3-2, and a second isolation layer 3-3 in the antenna, the non-circularity of the radiation pattern of the first oscillator 1 can be further reduced compared to the isolation structure 3 including the first dielectric substrate 3-1 and the first isolation layer 3-2, thereby further improving the coverage and radiation performance of the antenna.

[0086] Furthermore, to reduce the weight of the antenna and achieve a lightweight antenna, in some examples of the second type of isolation structure 3, the isolation layer has a plurality of first perforated patterns spaced apart along its length. For example, in the first case (example shown in FIG. 5A), the first isolation layer 3-2 has a plurality of first perforated patterns spaced apart along its length; in the second case (example shown in FIG. 6A), a plurality of first perforated patterns spaced apart along its length can be formed in the first isolation layer 3-2, or a plurality of first perforated patterns spaced apart along its length can be formed in the second isolation layer 3-3, or both the first isolation layer 3-2 and the second isolation layer 3-3 can have a plurality of first perforated patterns spaced apart along their length. The following will specifically describe the first perforated patterns in the isolation structure 3 in the first case (example shown in FIG. 5A) and the second case (example shown in FIG. 6A) and the beneficial effects thereof.

[0087] The following section introduces an example of opening a first cutout pattern 3-4 in the first isolation layer 3-2 shown in Figure 5A and its beneficial effects.

[0088] Figure 7A is an example diagram showing a first perforated pattern on the first isolation layer 3-2 in the example shown in Figure 5A. As shown in Figure 7A, its isolation structure 3 is the same as that in Figure 5A, both including a first dielectric substrate 3-1 and a first isolation layer 3-2 facing the second oscillator 2. The difference is that the first isolation layer 3-2 in this example has a plurality of first perforated patterns 3-4 spaced apart along its length. For example, the first perforated pattern 3-4 can be a rectangular opening as shown in Figure 7A, and the ratio of its length along the width direction of the first isolation layer 3-2 to the width w_1 of the first isolation layer 3-2 is 0.3-0.65; for example, for a first isolation layer 3-2 with a width w_1 of 12mm, the side length of the rectangular opening can be set to 0.03λ_1-0.06λ_1, where λ_1 is the operating wavelength corresponding to the lowest operating frequency in the operating frequency band of the first oscillator 1.

[0089] Figure 7B shows the result of the non-circularity of the radiation pattern of the first oscillator 1 after adopting the isolation structure 3 shown in Figure 7A; Figure 7C shows the result of the non-circularity of the radiation pattern of the second oscillator 2 after adopting the isolation structure 3 shown in Figure 7A. As can be seen from Figure 7B, by adding the isolation structure 3 shown in Figure 7A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the first oscillator 1 decreases from ±4.56dB shown in Figure 3B to ±2.92dB; as can be seen from Figure 7C, by adding the isolation structure 3 shown in Figure 7A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the second oscillator 2 decreases from ±3.70dB shown in Figure 3B to ±2.31dB. It should be noted that, as can be seen from the above, after adopting the isolation structure 3 shown in Figure 4A, which only includes a single-layer isolation layer, the non-circularity of the radiation pattern of the second oscillator 2 decreases to ±2.92dB; after adding the isolation structure 3 shown in Figure 5A, which includes a first dielectric substrate 3-1 and a first isolation layer 3-2, the non-circularity of the radiation pattern of the second oscillator 2 further decreases to ±2.40dB; and after adopting the isolation structure 3 shown in this example, which has a first hollow pattern 3-4 on the first isolation layer 3-2, the non-circularity of the radiation pattern of the second oscillator 2 further decreases to ±2.31dB.

[0090] As can be seen, in the above example, by further opening the first hollow pattern 3-4 on the first isolation layer 3-2 shown in Figure 5A, compared with the isolation structure 3 shown in Figure 5A, on the one hand, it can further reduce the non-circularity of the radiation pattern of the second oscillator 2, thereby further improving the coverage and radiation performance of the antenna; on the other hand, it can reduce the weight of the antenna, which helps to achieve a lightweight antenna.

[0091] The following section will use the example of opening a first hollow pattern 3-4 in the first isolation layer 3-2 shown in Figure 6A and its beneficial effects to introduce the above-mentioned technical solution of "opening a first hollow pattern on the isolation structure 3 in the second case".

[0092] Figure 8A is an example diagram showing a first perforated pattern on the first isolation layer 3-2 in the example shown in Figure 6A. As shown in Figure 8A, its isolation structure 3 is the same as that in Figure 6A, both including a first dielectric substrate 3-1, a second isolation layer 3-3 facing the first oscillator 1, and a first isolation layer 3-2 facing the second oscillator 2. The difference is that the first isolation layer 3-2 in this example has a plurality of first perforated patterns 3-4 spaced apart along its length. For example, the first perforated pattern 3-4 can be a rectangular opening as shown in Figure 8A, and the ratio of its length along the width direction of the first isolation layer 3-2 to the width w_1 of the first isolation layer 3-2 is 0.3-0.65; for example, for a first isolation layer 3-2 with a width w_1 of 12mm, the side length of the rectangular opening can be set to 0.03λ_1-0.06λ_1, where λ_1 is the operating wavelength corresponding to the lowest operating frequency in the operating frequency band of the first oscillator 1.

[0093] Figure 8B shows the result of the non-circularity of the radiation pattern of the first oscillator 1 after adopting the isolation structure 3 shown in Figure 8A; Figure 8C shows the result of the non-circularity of the radiation pattern of the second oscillator 2 after adopting the isolation structure 3 shown in Figure 8A. As can be seen from Figure 8B, by adding the isolation structure 3 shown in Figure 8A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the first oscillator 1 decreases from ±4.56dB as shown in Figure 3B to ±2.59dB; as can be seen from Figure 8C, by adding the isolation structure 3 shown in Figure 8A between the first oscillator 1 and the second oscillator 2, the non-circularity of the radiation pattern of the second oscillator 2 decreases from ±3.70dB as shown in Figure 3B to ±2.59dB.

[0094] As can be seen, in the above example, by further opening the first hollow pattern 3-4 on the first isolation layer 3-2 shown in Figure 6A, it has the same effect as the isolation structure 3 shown in Figure 6A in improving the non-circularity of the radiation pattern. However, compared with the isolation structure 3 shown in Figure 6A, it can reduce the weight of the antenna, thereby helping to achieve a lightweight antenna.

[0095] Of course, the first perforated pattern 3-4 is not limited to a rectangular opening. Figure 9 shows several schematic diagrams of the shape of the first perforated pattern 3-4. For example, the first perforated pattern 3-4 can be the first annular shape 30 shown in sub-figure A of Figure 9. The ratio of the length of the inner diameter w_2 of the first annular shape 30 along the width direction of the first isolation layer 3-2 to the width w_1 of the first isolation layer 3-2 is 0.11-0.43; the ratio of the length of the outer diameter w_3 of the first annular shape 30 along the width direction of the first isolation layer 3-2 to the width w_1 of the first isolation layer 3-2 is 0.3-0.65. For example, for the first isolation layer 3-2 with a width w_1 of 12 mm, the inner diameter of the first annular shape 30 can be set to 0.01λ_1-0.04λ_1, and the outer diameter can be set to 0.03λ_1-0.06λ_1. Alternatively, the first hollow pattern 3-4 can be the shape shown in sub-figure B of Figure 9, which includes a first rectangular opening 32 and a second ring 31 surrounding the first rectangular opening 32; in this example, the size of the second ring 31 can be the same as the size of the first ring 30 in sub-figure A of Figure 9. Alternatively, the first hollow pattern 3-4 can be the shape shown in sub-figure C of Figure 9, which includes a second rectangular opening 33 and a third ring 34 surrounding the second rectangular opening 33, and one side of the second rectangular opening 33 and one side of the third ring 34 are connected through a second opening 35; in this example, the size of the third ring 34 can be the same as the size of the first ring 30 in sub-figure A of Figure 9. Alternatively, the first hollow pattern 3-4 can be the first strip 36 in sub-figure D of Figure 9, and the length of the first strip 36 can be the same as the outer diameter of the first ring 30 in sub-figure A of Figure 9. Alternatively, the first hollow pattern 3-4 can be the shape shown in sub-figure E of Figure 9, which is a first cross structure formed by the intersection of the third rectangular opening 37 and the fourth rectangular opening 38, wherein the short sides of the third rectangular opening 37 and the fourth rectangular opening 38 can be set to 0.002λ_1-0.03λ_1. Alternatively, the first hollow pattern 3-4 can be the shape shown in sub-figure F of Figure 9, which includes the first cross structure formed by the intersection of the third rectangular opening 37 and the fourth rectangular opening 38, and four second cross structures 39 located in the four quadrants defined by the cross shape. In this example, the short sides of the third rectangular opening 37 and the fourth rectangular opening 38 can be set to 0.002λ_1-0.03λ_1.

[0096] Of course, the shape and size of the first hollow pattern 3-4 can also be other, and this disclosure does not limit this.

[0097] In order to further optimize the radiation performance of the antenna, such as improving its standing wave ratio and radiation loss, this disclosure makes improvements to the first oscillator 1 and the second oscillator 2. The structure of the first oscillator 1 and the second oscillator 2 is described in detail below.

[0098] Figures 10A and 10C are schematic diagrams of the first oscillator 1, and Figures 10B and 10D are schematic diagrams of the second oscillator 2. As shown in Figures 10A and 10B, both the first oscillator 1 and the second oscillator 2 include a feeding structure 801 and a radiation electrode 802 connected to the feeding structure 801. Referring to Figures 10C and 10D, for both the first oscillator 1 and the second oscillator 2, the radiation electrode 802 includes a radiation body portion 802-2 and a connecting portion 802-1 connected to the feeding structure 801, and the width of the connecting portion 802-1 becomes narrower as it approaches the feeding structure 801. For example, the connecting portion 802-1 is trapezoidal, with its upper bottom edge connected to the feeding structure 801 and its lower bottom edge connected to the radiation body portion 802-2.

[0099] In the example above, the connection between the feed structure 801 and the radiating electrode 802 is achieved by using a gradually changing size connection part 802-1, which helps to achieve better impedance matching and reduce antenna loss.

[0100] Referring again to Figures 10C and 10D, the power supply structure 801 includes a signal electrode 801-1, a first reference electrode 801-2 and a second reference electrode 801-3 respectively disposed on both sides of the extending direction of the signal electrode 801-1, a first branch 801-4 connected to the first reference electrode 801-2, and a second branch 801-5 connected to the second reference electrode 801-3.

[0101] In some examples, referring to Figures 5A, 6A, 7A, or 8A, the antenna includes not only the aforementioned structure but also a boss structure disposed on the carrier substrate 10. Taking the antenna as an example comprising one first element 1 and two second elements 2, the boss structure includes a first boss 11 corresponding to the position of the feed structure 801 of the first element 1 and two second bosses 21 respectively corresponding to the positions of the feed structures 801 of the second elements 2. Both the first boss 11 and the second bosses 12 include a third surface and a fourth surface disposed opposite to each other, and a connecting side surface connecting the third surface and the fourth surface; wherein the third surface is closer to the carrier substrate 10 than the fourth surface.

[0102] Referring to Figures 10A-10D, regardless of whether it is the first oscillator 1 or the second oscillator 2, its feeding structure 801 includes at least a signal electrode 801-1. This signal electrode 801-1 is disposed on the fourth surface of the boss structure and extends through its connecting side to and connects with the radiation electrode 802. Additionally, the feeding structure 801 also includes a first reference electrode 801-2 and a second reference electrode 801-3 disposed on both sides of the extending direction of the signal electrode 801-1. Both the first reference electrode 801-2 and the second reference electrode 801-3 extend from the fourth surface of the boss structure through its connecting side to the carrier substrate 10. Furthermore, the feeding structure 801 also includes a first branch 801-4 disposed on the carrier substrate 10 and connected to the first reference electrode 801-2, and a second branch 801-5 connected to the second reference electrode 801-3.

[0103] In the above example, by setting the signal electrode 801-1 of the feed structure 801 on the fourth surface and the connecting side of the boss structure, this setting method can reduce the area occupied by the vibrator on the carrier substrate 10, increase the space utilization of the antenna, and help to realize the miniaturization of the antenna, compared with directly attaching the feed structure 801 to the carrier substrate 10.

[0104] Referring to Figures 10E and 10F, in addition to the above-described structure, the antenna also includes a third dielectric substrate 803 for carrying the feed structure 801 and the radiating electrode 802. Figure 10E is a plan view of the third dielectric substrate 803; Figure 10F is a schematic diagram showing the third dielectric substrate 803, on which the feed structure 801 and the radiating electrode 802 are disposed, partially covering the boss structure. Referring to Figures 10E and 10F, the third dielectric substrate 803 can be divided into a first region 901 and a second region 902, with the feed structure 801 located in the first region 901 and the radiating electrode 802 located in the second region 902. The first region 901 covers at least a portion of the boss structure, and the third dielectric substrate 803 is provided with a first slit opening 803-1 and a second slit opening 803-2 located between the first region 901 and the second region 902. Specifically, the first slit opening 803-1 is located between the first reference electrode 801-2 and the first branch 801-4 and the radiation electrode 802; the second slit opening 803-2 is located between the second reference electrode 801-3 and the second branch 801-5 and the radiation electrode 802.

[0105] In some examples, the third dielectric substrate 803 may be a flexible dielectric substrate, such as polyimide (PI). During fabrication, the feeding structure 801 and the radiating electrode 802 are formed on the first surface of the third dielectric substrate 803. Then, an adhesive is coated on the second surface of the third dielectric substrate 803, and it is attached to the carrier substrate 10 by means of the adhesive.

[0106] In the above example, by opening a first slit opening 803-1 and a second slit opening 803-2 on the third dielectric substrate 803, the following problem can be solved: during the process of attaching the third dielectric substrate 803 to the support substrate 10 with a boss structure, the problem of the third dielectric substrate 803 not being able to be firmly attached to the support substrate 10 due to the gap between the third dielectric substrate 803 and the support substrate 10 caused by the support of the boss structure can be avoided, thus affecting the stability of the oscillator performance. Further, referring to Figures 10A and 10C, the radiation electrode 802 of the first oscillator 1 also includes a third branch 801-6 opposite to the first branch 801-4 and a fourth branch 801-7 opposite to the second branch 801-5, and both the third branch 801-6 and the fourth branch 801-7 are connected to the radiation electrode 802.

[0107] For example, for the first oscillator 1, the lengths of its first branch 801-4 and second branch 801-5 can be set to 0.06λ_1-0.08λ_1, the lengths of its third branch 801-6 and fourth branch 801-7 can be set to 0.07λ_1-0.1λ_1, and the length of its radiating main body 802-2 can be set to 0.17λ_1-0.22λ_1. For the second oscillator 2, the lengths of its first branch 801-4 and second branch 801-5 can be set to 0.04λ_2-0.08λ_2, and the length of its radiating main body 802-2 can be set to 0.20λ_2-0.25λ_2, where λ_2 is the operating wavelength corresponding to the lowest operating frequency in the operating frequency band of the second oscillator 2.

[0108] In the example above, the first branch 801-4 and the second branch 801-5 can help improve the antenna's standing wave ratio (SWR). Tests show that the SWR of the antenna in this example can be less than 2.0. The third branch 801-6 and the fourth branch 801-7 are tuning arms, which help adjust the antenna's operating frequency band.

[0109] Figures 11A and 11B show two other examples of the radiating main body 802-2. Whether it's the first oscillator 1 or the second oscillator 2, the radiating main body 802-2 can be configured as shown in Figures 11A and 11B. The first example, as shown in Figure 11A, includes a first side E1 and a second side E2 disposed opposite each other, and a first bottom edge E3 opposite to the connecting part 802-1. The first bottom edge E3 is connected to the first side E1 and the second side E2 via a first connecting edge E4 and a second connecting edge E5, respectively. The angle between the first connecting edge E4 and the first side E1, and the angle between the first connecting edge E4 and the first bottom edge E3, are obtuse angles, as are the angles between the second connecting edge E5 and the second side E2, and the angle between the second connecting edge E5 and the first bottom edge E3. Of course, the first connecting edge E4 and the second connecting edge E5 can be straight lines (as shown in Figure 11A) or curved lines. The second example is shown in Figure 11B, where the radiating main body 802 has a second hollow pattern 206, such as a rectangular opening. Of course, the shape of the second hollow pattern 206 is not limited to a rectangle; it can also be a circle, a regular polygon, or other shapes. This disclosure does not impose any restrictions on this.

[0110] In the above example, by setting the bottom of the radiating body 802-2 to a chamfered shape, or by opening a second hollow pattern 206 in the radiating body 802-2, the standing wave ratio of the antenna can be improved by extending the current path.

[0111] Referring to Figures 5A, 6A, 7A, or 8A, the first oscillator 1 further includes a reflective structure 12 disposed on the side of the radiating electrode 802 facing away from the carrier substrate 10. Figure 12 is a schematic diagram of the reflective structure 12. As shown in Figure 12, the reflective structure 12 includes a second dielectric substrate 4-1 opposite to the carrier substrate 10, and a reflective layer 4-2 disposed on the second dielectric substrate 4-1. The reflective layer 4-2 has a first opening 4-4 ​​extending through its thickness direction. For example, the first opening 4-4 ​​can be located in the middle of the reflective layer 4-2, and its shape can be circular, rectangular, or other shapes. The material of the reflective layer 4-2 can be metal. The distance between the second dielectric substrate 4-1 and the first oscillator 1 can be set to 5mm-10mm.

[0112] Furthermore, the reflective structure 12 has a first notch 4-3 at a position corresponding to the signal electrode 801-1. For example, the first notch 4-3 can be rectangular, with a width w of 0.05λ_1-0.08λ_1 and a length L of 0.13λ_1-0.16λ_1.

[0113] In the example above, by setting a reflective structure 12 above the first oscillator 1, the standing wave ratio and radiation pattern of the antenna can be improved, thereby enhancing the radiation performance of the antenna and improving the communication quality.

[0114] Those skilled in the art will understand that in the above examples, the reflective structure 12 needs to be supported above the first vibrator 1 by a support structure. This support structure increases the weight of the antenna and occupies space; furthermore, this approach is more complex to manufacture and install. To solve these problems, in some examples, the second dielectric substrate 4-1 and the first dielectric substrate 3-1 are fabricated as an integral structure, as shown in Figure 13A. Taking the example of a first vibrator 1 and two second vibrators 2, with an isolation structure 3 between the first vibrator 1 and each second vibrator 2, as shown in Figure 13A, the second dielectric substrate 4-1 of the reflective structure 12 and the first dielectric substrate 3-1 of the isolation structure 3 are connected by a first connecting portion 4-5 and a second connecting portion 4-6, forming an integral structure. In this example, there is no need to separately provide a support structure for the reflective structure 12; therefore, the antenna structure is more compact, lighter, and the installation steps of the vibrator can be simplified.

[0115] Figure 13B shows the non-circularity of the radiation pattern of the first element 1 in the antenna shown in Figure 13A, and Figure 13C shows the non-circularity of the radiation pattern of the second element 2 in the antenna shown in Figure 13A. As can be seen from Figure 13B, by adopting an isolation structure 3 including a first dielectric substrate 3-1 and a first isolation layer 3-2, and integrally forming the second dielectric substrate 4-1 and the first dielectric substrate 3-1, the non-circularity of the radiation pattern of the first element 1 decreases from the original ±4.56dB to ±2.74dB. As can be seen from Figure 13C, by adding an isolation structure 3 including a first dielectric substrate 3-1 and a first isolation layer 3-2 between the first element 1 and the second element 2, and integrally forming the second dielectric substrate 4-1 and the first dielectric substrate 3-1, the non-circularity of the radiation pattern of the second element 2 decreases from the original ±3.70dB to ±2.36dB. It should be noted that, as can be seen from the above, after adopting the isolation structure 3 shown in Figure 4A, the non-circularity of the radiation pattern of the second oscillator 2 decreases to ±2.53dB; after adopting the isolation structure 3 shown in Figure 5A, the non-circularity of the radiation pattern of the second oscillator 2 decreases to ±2.40dB; and after adopting the structure shown in Figure 13A, the non-circularity of the radiation pattern of the second oscillator 2 decreases to ±2.36dB.

[0116] As can be seen, in the example shown in Figure 13A, the first dielectric substrate 3-1 and the second dielectric substrate 4-1 are integrally formed, which can achieve at least the following beneficial effects: 1. The support structure that is separately set for the reflective structure 12 can be eliminated, so it is lighter in weight and the installation steps are simplified; 2. The non-circularity of the antenna pattern can be effectively improved, and the improvement effect is better for the second vibrator 2 than that of the two examples in Figures 4A and 5A.

[0117] Secondly, based on the same invention, this disclosure also provides an electronic device including any of the antennas described in the above embodiments.

[0118] In some examples, the electronic device provided in this disclosure further includes a transceiver unit, a radio frequency transceiver, a signal amplifier, a power amplifier, and a filtering unit. The antenna in the electronic device can function as either a transmitting antenna or a receiving antenna. The transceiver unit may include a baseband and a receiving end. The baseband provides signals in at least one frequency band, such as 2G, 3G, 4G, and 5G signals, and transmits these signals to the radio frequency transceiver. After receiving the signal, the antenna in the electronic device can process it through the filtering unit, power amplifier, signal amplifier, and radio frequency transceiver before transmitting it to the receiving end in the transceiver unit. The receiving end may be, for example, a smart gateway.

[0119] Furthermore, the RF transceiver is connected to the transceiver unit and is used to modulate the signals transmitted by the transceiver unit, or to demodulate the signals received by the antenna before transmitting them to the transceiver unit. Specifically, the RF transceiver may include a transmitting circuit, a receiving circuit, a modulation circuit, and a demodulation circuit. After the transmitting circuit receives various types of signals provided by the baseband, the modulation circuit can modulate these signals before sending them to the antenna. The antenna receives the signals and transmits them to the receiving circuit of the RF transceiver. The receiving circuit then transmits the signals to the demodulation circuit, which demodulates the signals before transmitting them to the receiving end.

[0120] Furthermore, the RF transceiver is connected to a signal amplifier and a power amplifier, which are then connected to a filtering unit. The filtering unit is connected to at least one antenna. During signal transmission by the electronic device, the signal amplifier improves the signal-to-noise ratio (SNR) of the RF transceiver's output signal before transmitting it to the filtering unit; the power amplifier amplifies the power of the RF transceiver's output signal before transmitting it to the filtering unit. The filtering unit may specifically include a duplexer and a filtering circuit. It combines the signals output from the signal amplifier and power amplifier, filters out noise, and transmits the signals to the antenna, which then radiates the signal. During signal reception by the electronic device, the antenna receives the signal and transmits it to the filtering unit. The filtering unit filters out noise from the received signal before transmitting it to the signal amplifier and power amplifier. The signal amplifier increases the gain of the received signal, improving the SNR; the power amplifier amplifies the power of the received signal. The signal received by the antenna is processed by the power amplifier and signal amplifier before being transmitted to the RF transceiver, which then transmits it to the transceiver unit.

[0121] In some examples, the signal amplifier may include various types of signal amplifiers, such as low-noise amplifiers, without limitation.

[0122] In some examples, the electronic device provided in this disclosure also includes a power management unit connected to a power amplifier and providing the power amplifier with a voltage for amplifying signals.

[0123] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An antenna comprising a carrier substrate and a plurality of elements disposed on the carrier substrate; wherein at least some of the elements operate at different frequencies; wherein, The antenna also includes an isolation structure disposed on the carrier substrate and located between two adjacent vibrators with different operating frequencies; The isolation structure includes a first dielectric substrate disposed on the carrier substrate and at least one isolation layer; The first dielectric substrate has a first surface and a second surface facing the oscillator and disposed opposite to each other, and the isolation layer is disposed on at least one of the first surface and the second surface.

2. The antenna according to claim 1, wherein, The isolation layer has a plurality of first hollow patterns spaced apart along its length.

3. The antenna according to claim 2, wherein, The first cutout pattern is a rectangular opening, and the ratio of its length along the width direction of the isolation layer to the width of the isolation layer is 0.3-0.

65.

4. The antenna according to claim 2, wherein, The first perforated pattern is annular, and the ratio of the length of the inner diameter of the annular pattern along the width direction of the isolation layer to the width of the isolation layer is 0.11-0.43; the ratio of the length of the outer diameter of the annular pattern along the width direction of the isolation layer to the width of the isolation layer is 0.3-0.

65.

5. The antenna according to claim 1, wherein, The oscillator includes a feeding structure and a radiating electrode connected to the feeding structure; The radiation electrode includes a radiation body and a connection part connected to the feeding structure; The closer the connection is to the power supply structure, the narrower its width becomes.

6. The antenna according to claim 5, wherein, The radiating body has a second hollowed-out pattern.

7. The antenna according to claim 5, wherein, The radiating main body includes a first side and a second side disposed opposite to each other, and a first bottom side opposite to the connecting part; The first bottom edge is connected to the first side edge and the second side edge via a first connecting edge and a second connecting edge, respectively; The angle between the first connecting edge and the first side edge and the angle between the first connecting edge and the first bottom edge are obtuse angles; the angle between the second connecting edge and the second side edge and the angle between the second connecting edge and the first bottom edge are also obtuse angles.

8. The antenna according to claim 5, wherein, It also includes a boss structure disposed on the carrier substrate; The boss structure includes a third surface and a fourth surface disposed opposite to each other, and a connecting side surface connecting the third surface and the fourth surface; the third surface is closer to the carrier substrate than the fourth surface. The power feeding structure includes at least a signal electrode disposed on the fourth surface and extending via the connection side to and connected to the radiation electrode.

9. The antenna according to claim 8, wherein, The power supply structure further includes a first reference electrode and a second reference electrode disposed on both sides of the signal electrode extension direction, a first branch connected to the first reference electrode, and a second branch connected to the second reference electrode. Both the first reference electrode and the second reference electrode extend from the fourth surface to the carrier substrate via the connecting side; both the first branch and the second branch are disposed on the carrier substrate.

10. The antenna according to claim 9, wherein, It also includes a third dielectric substrate, on which the feeding structure and the radiating electrode are disposed; The third dielectric substrate is divided into a first region and a second region; the feeding structure is located in the first region and the radiating electrode is located in the second region. The first region covers at least a portion of the location of the boss structure; The third dielectric substrate is provided with a first slit opening and a second slit opening located between the first region and the second region. The first slit opening is located between the first reference electrode and the first branch and the radiation electrode; the second slit opening is located between the second reference electrode and the second branch and the radiation electrode.

11. The antenna according to claim 9, wherein, The plurality of oscillators includes a first oscillator and a second oscillator, wherein the operating frequency of the first oscillator is lower than the operating frequency of the second oscillator; The first oscillator's radiation electrode further includes a third branch opposite to the first branch and a fourth branch opposite to the second branch, and both the third branch and the fourth branch are connected to the radiation electrode.

12. The antenna according to claim 11, wherein, The first oscillator also includes a reflective structure disposed on the side of the radiating electrode opposite to the supporting substrate; The reflective structure includes a second dielectric substrate opposite to the carrier substrate, and a reflective layer disposed on the second dielectric substrate, the reflective layer having a first opening extending through its thickness direction.

13. The antenna according to claim 12, wherein, The reflective structure has a first notch at the position corresponding to the signal electrode.

14. The antenna according to claim 1, wherein, The material of the first dielectric substrate includes resin.

15. An electronic device comprising the antenna according to any one of claims 1-14.

Images