CN115603056A - Antenna and electronic equipment - Google Patents

Abstract

The invention provides an antenna and an electronic device. The housing has a slit. The feed substrate is arranged on the inner side of the shell and corresponds to the slit, the feed substrate is provided with a first plate surface and a second plate surface opposite to the first plate surface, the second plate surface is arranged towards the slit, the first plate surface is provided with a microstrip line, an antenna feed point connected into the microstrip line and a matching circuit arranged on the microstrip line, at least one lumped element is connected into the matching circuit, and the electrical parameters of the lumped element and the size parameters of the microstrip line are adjusted to obtain the performance parameters of antenna radiation matched with the electrical parameters of the lumped element and the size parameters of the microstrip line. The structure increases the debugging space of the antenna radiation performance, and can optimize the performance parameters of the antenna radiation through adjustment, so that the antenna radiation performance can be diversified, and can be optimized in the continuous adjustment process, the influence of the shell on the antenna radiation performance is reduced, and the problem of high difficulty in antenna design in the prior art is reduced.

Description

Antenna and electronic equipment

Technical Field

The present invention relates to the field of wireless communication, and in particular, to an antenna and an electronic device.

Background

The antenna is a conversion device of space radio wave signals and alternating current signals in the circuit, and the space radio wave signals are transmitted to the circuit through the antenna; the alternating current signal in the circuit is finally transmitted to the space through the antenna. At present, antennas of many electronic devices, such as notebook computers, smart phones, etc., are used as important data transmission components. In the design of an antenna of an electronic device with a metal environment shell, wireless communication is generally realized by opening an antenna window on the metal environment shell, but the radiation performance of the antenna is still affected, so that the design difficulty of the antenna is high.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides an antenna and electronic equipment, which increase the debugging space of the radiation performance of the antenna, optimize the performance parameters of the antenna radiation through adjustment, diversify the radiation performance of the antenna, optimize the radiation performance of the antenna in the continuous adjustment process, reduce the influence of a shell on the radiation performance of the antenna and solve the problem of high design difficulty of the antenna in the prior art.

The embodiment of the invention provides an antenna which comprises a shell and a feed substrate. The housing has a slit. The feed substrate is arranged on the inner side of the shell and corresponds to the slit arrangement, the feed substrate is provided with a first plate surface and a second plate surface opposite to the first plate surface, the second plate surface faces the slit arrangement of the shell, the first plate surface is provided with a microstrip line, an antenna feed point connected with the microstrip line and a matching circuit arranged on the microstrip line, the matching circuit is connected with at least one lumped element, and the electrical parameters of the lumped element and the size parameters of the microstrip line are adjusted to obtain the electrical parameters of the lumped element and the performance parameters of the antenna radiation matched with the size parameters of the microstrip line.

In some embodiments, the matching circuit is located on the same side or opposite sides of the first panel from the antenna feed point.

In some embodiments, the antenna feed is directly connected to the matching circuit; or the antenna feed point is not directly connected with the matching circuit, so that the antenna feed point and the matching circuit are coupled through the microstrip line and/or the space to generate multiple feeding.

In some embodiments, the feeding substrate is disposed corresponding to a middle portion of the slit.

In some embodiments, the lumped elements are coupled in series and/or parallel to the matching circuit.

In some embodiments, the matching circuit is formed by combining one or more of the following circuit forms: l, pi, and T.

In some embodiments, the microstrip line is disposed on the feeding substrate by printing; the lumped element is arranged on the microstrip line in a welding mode.

In some embodiments, the second board surface of the feeding substrate is disposed on the housing by gluing or welding.

In some embodiments, the slit is configured as a rectangular slot having a height ranging from 1mm to 3mm and a length ranging from 20mm to 60mm; the length range of the feed substrate is 10mm to 50mm, and the width range is 4mm to 10mm.

The embodiment of the invention also provides electronic equipment which comprises the antenna.

Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the invention, the matching circuit is arranged on the microstrip line, at least one lumped element is connected to the matching circuit, and the electrical parameters of the lumped element and the size parameters of the microstrip line are respectively adjusted, so that the antenna radiation performance parameters matched with the adjusted electrical parameters of the lumped element and the size parameters of the microstrip line can be obtained, namely, a plurality of groups of electrical parameters and size parameters respectively correspond to a plurality of groups of antenna radiation performance parameters, the debugging space of the antenna radiation performance is increased, the antenna radiation performance parameters can be optimized through adjustment, the antenna radiation performance can be diversified, the antenna radiation performance can be optimized in the continuous adjustment process, the influence of the shell on the antenna radiation performance is reduced, and the problem of high antenna design difficulty in the prior art is solved.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a first internal structure of an antenna according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a second internal structure of the antenna according to the embodiment of the invention;

fig. 4 is a schematic diagram of a third internal structure of the antenna according to the embodiment of the invention;

fig. 5 is an equivalent schematic diagram of an antenna corresponding to the antenna according to the embodiment of the present invention, in which the matching circuit is an L-shaped matching circuit;

fig. 6 is an equivalent schematic diagram of an antenna corresponding to the antenna according to the embodiment of the present invention, in which the matching circuit is an n-type matching circuit;

fig. 7 is an equivalent schematic diagram of an antenna corresponding to the antenna according to the embodiment of the present invention, in which the matching circuit is a T-type matching circuit;

fig. 8 is an equivalent schematic diagram of an antenna corresponding to the antenna according to the embodiment of the present invention, in which the matching circuit is formed by combining an n-type matching circuit and a T-type matching circuit.

The members denoted by reference numerals in the drawings:

1-a shell; 11-a slit; 2-a feeding substrate; 3-a microstrip line; 4-lumped elements; 5-antenna feed point; 6-matching circuit.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and the detailed description of embodiments of the invention, but is not intended to limit the invention.

The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present invention, when it is described that a specific device is located between a first device and a second device, there may or may not be an intervening device between the specific device and the first device or the second device. When a particular device is described as being coupled to another device, it can be directly coupled to the other device without intervening devices or can be directly coupled to the other device with intervening devices.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

The embodiment of the present invention provides an antenna, which may be applied to an electronic device, where the electronic device may refer to different electronic devices such as a mobile phone, a tablet Computer, a notebook Computer, a PC (Personal Computer), and the like, and the specific device of the electronic device is not limited in the present invention, as long as the electronic device is provided with the antenna, and wireless communication is performed through the antenna.

Further, as shown in fig. 1 and 2, the antenna includes a housing 1 and a feed substrate 2. The housing 1 has a slit 11. The feed substrate 2 is arranged on the inner side of the shell 1 and corresponds to the slit 11, the feed substrate 2 is provided with a first plate surface and a second plate surface opposite to the first plate surface, the second plate surface faces the slit 11, the first plate surface is provided with a microstrip line 3, an antenna feed point 5 connected to the microstrip line 3 and a matching circuit 6 arranged on the microstrip line 3, at least one lumped element 4 is connected to the matching circuit 6, and the electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3 are adjusted to obtain the performance parameters of antenna radiation matched with the electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3.

Specifically, in the case where the electronic device is a notebook computer, the housing 1 may be understood as a housing of a system side of the notebook computer, and the housing may be made of metal or the like.

Specifically, the feeding substrate 2 may be understood as a circuit board capable of feeding power, and the feeding substrate 2 may be formed of a multilayer circuit board, which is not particularly limited in this application. In addition, the thickness of the above-described feeding substrate 2 may be 0.4mm.

Specifically, the feeding substrate 2 may be connected to the housing 1 through the second plate surface thereof, so that the feeding substrate 2 is stably disposed corresponding to the slit 11 on the housing 1.

The microstrip line 3 can be understood as a microwave transmission line formed by a single conductor strip supported on a dielectric substrate, and has the characteristics of high conductivity, good stability, strong adhesion with the feed substrate 2, and the like.

Specifically, the matching circuit 6 is provided for generating multiple feeding. The lumped element 4 may be a plurality of lumped elements 4, and the plurality of lumped elements 4 may be connected to the matching circuit 6 in a predetermined manner, such as connecting the lumped elements 4 in series and in parallel on different types of matching circuits 6.

In particular, the lumped element 4 may include a resistor, a capacitor, and an inductor. The electrical parameters corresponding to the resistor may include at least impedance, rated power, load characteristics, temperature coefficient, etc., the electrical parameters corresponding to the capacitor may include at least capacitive reactance, rated voltage, frequency characteristics, quality factor, etc., and the electrical parameters corresponding to the inductor may include at least inductive reactance, rated current, frequency characteristics, quality factor, etc. The capacitor and the inductor belong to lossless energy storage devices, and the electrical parameters of the capacitor and the inductor are adjusted, so that the performance parameters of antenna radiation are debugged, different antenna radiation performance parameters can be obtained by different electrical parameters, the purpose of antenna debugging diversification is achieved, and the antenna debugging space is improved.

Specifically, the antenna feed point 5 and the microstrip line 3 may be placed on the second plate surface of the feed substrate 2 through a metal via.

Specifically, the antenna feed point 5 can be understood as a solder point soldered to the microstrip line 3, and the input of the signal is performed by soldering the antenna feed point 5 to the microstrip line 3.

It should be noted that, after the lumped element 4 is added, the current distribution around the slit 11 can be changed, so that multiple times of excitation of the antenna can be realized, and the current can be distributed around the slit 11 more intensively, thereby achieving the purpose of improving the radiation performance of the antenna.

Specifically, the adjustment of the dimensional parameters of the microstrip line 3 may specifically include adjusting the shape, length, width, and the like of the microstrip line 3.

Specifically, the antenna may further include a baffle disposed in the slit 11, and the baffle is made of a non-metal material. The above-mentioned baffle is used for protecting the feeding substrate 2 and preventing contaminants such as dust from entering the interior of the housing 1 through the slit 11.

Specifically, the performance parameters of the antenna radiation may include antenna efficiency, average gain, omni-directionality or directivity, horizontal plane gain, and the like.

According to the invention, the matching circuit 6 is arranged on the microstrip line 3, at least one lumped element 4 is connected to the matching circuit 6, and the electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3 are respectively adjusted, so that the antenna radiation performance parameters matched with the adjusted electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3 can be obtained, namely, a plurality of groups of electrical parameters and size parameters respectively correspond to a plurality of groups of antenna radiation performance parameters, the debugging space of the antenna radiation performance is increased, the antenna radiation performance parameters can be optimized through adjustment, the antenna radiation performance can be diversified, the antenna radiation performance can be optimized in the continuous adjustment process, the influence of the shell 1 on the antenna radiation performance is reduced, and the problem of high antenna design difficulty in the prior art is solved.

In some embodiments, as shown in fig. 2-4, the matching circuit 6 is located on the same side or on opposite sides of the first panel at the antenna feed point 5. With particular reference to fig. 2 and 3, the matching circuits 6 shown in fig. 2 and 3 are located on the same side of the antenna feed point 5, and the matching circuits 6 shown in fig. 4 are located on opposite sides of the antenna feed point 5.

Thus, when the matching circuit 6 is located on the same side of the antenna feed point 5, radiation is favorably enhanced in one direction, so that the directivity in the radiation performance of the antenna is optimized; when the matching circuits 6 are positioned at two opposite sides of the antenna feed point 5, the omnidirectional antenna is favorable for optimizing the radiation performance, so that the radiation range of the antenna is larger; the specific performance parameter that requires directivity or omni-directivity is determined by the environment in which the antenna is located.

The matching circuit 6 is positioned at the same side or two opposite sides of the antenna feed point 5, so that the diversity of antenna debugging means is realized, and the antenna debugging space is increased, thereby obtaining more optimized antenna radiation performance.

Specifically, the plurality of microstrip lines 3 on the feeding substrate 2 may be disposed toward the same direction, or disposed toward different directions, which is not specifically limited in the present application. For example, as shown in fig. 3 and 4, the microstrip lines 3 shown in the figures are all disposed toward the same direction.

In some embodiments, as shown in fig. 5-8, the antenna feed point 5 is directly connected to the matching circuit 6; or, the antenna feed point 5 and the matching circuit 6 are not directly connected, that is, the antenna feed point 5 and the matching circuit 6 are not actually directly connected, so that the two are coupled through the microstrip line 3 and/or space to generate multiple feeds.

Thus, when the antenna feed point 5 is directly connected with the matching circuit 6, the matching circuit 6 is inserted between the signal source and the load to reduce the signal reflection of the radio frequency signal and achieve the maximum transmission power; when the antenna feed point 5 is not directly connected to the matching circuit 6, that is, when the antenna feed point 5 and the matching circuit 6 are not actually directly connected to each other, the antenna feed point 5 and the matching circuit 6 are coupled to each other through the microstrip line 3 and/or the space to generate multiple feeding. The signal source can be understood as being emitted from the network card end, the load can be understood as an antenna, and the antenna receives the energy of the signal source and then converts the energy into electromagnetic waves to radiate to the space.

In some embodiments, as shown in fig. 2, the feeding substrate 2 is disposed corresponding to the middle of the slit 11, so that the antenna radiation performance is more easily released, and the purpose of further optimizing the antenna radiation performance is achieved. If the feeding substrate 2 is disposed not in the middle of the slit 11 but in one direction, such as left or right, the antenna resonance can also come out, but the current distribution on the slit 11 will be shifted to one side, which has a large influence on the far field of the antenna.

In some embodiments, as shown in fig. 5 to 8, the lumped elements 4 are connected to the matching circuit 6 in series and/or in parallel, so that a plurality of different forms of matching circuits 6 can be formed by different ways of connecting the lumped elements 4 to the matching circuit 6, thereby enriching the diversity of ways of adjusting the matching circuits 6.

Specifically, in combination with the matching circuits 6 shown in fig. 5 to 8, the lumped elements 4 are connected to the matching circuits 6 in a serial and/or parallel manner, and the application does not specifically limit the connection form and connection number of the lumped elements 4, and various matching circuits 6 can be obtained by adjusting.

In some embodiments, as shown in fig. 5 to 8, the matching circuit 6 is formed by combining one or more of the following circuit forms: l, pi, and T.

Specifically, with reference to fig. 5 to 8, the matching circuit 6 in the antenna equivalent schematic diagram shown in fig. 5 is an L-type matching circuit, the matching circuit 6 in the antenna equivalent schematic diagram shown in fig. 6 is a Π -type matching circuit, the matching circuit 6 in the antenna equivalent schematic diagram shown in fig. 7 is a T-type matching circuit, and the matching circuit 6 in the antenna equivalent schematic diagram shown in fig. 8 is formed by combining a Π -type matching circuit and a T-type matching circuit.

In some embodiments, the microstrip line 3 is disposed on the feeding substrate 2 by printing; the lumped element 4 is disposed on the microstrip line 3 by soldering.

In some embodiments, the second board surface of the feeding substrate 2 is disposed on the housing 1 by gluing or welding.

Specifically, the second plate surface of the feeding substrate 2 may be specifically adhered to the housing 1 by using a conductive adhesive.

In some embodiments, the slit 11 is configured as a rectangular slot, i.e., the slit 11 is in a shape of a Chinese character 'yi', and the rectangular slot has a height ranging from 1mm to 3mm and a length ranging from 20mm to 60mm; the length of the feeding substrate 2 ranges from 10mm to 50mm, and the width ranges from 4mm to 10mm.

Preferably, the rectangular groove has a length of 40mm and a height of 2.2mm. The length of the feeder substrate 2 is 35mm, and the width is 5.7mm.

The embodiment of the invention also provides electronic equipment, and the electronic equipment comprises the antenna. According to the invention, the matching circuit 6 is arranged on the microstrip line 3, at least one lumped element 4 is connected to the matching circuit 6, and the electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3 are respectively adjusted, so that the antenna radiation performance parameters matched with the adjusted electrical parameters of the lumped element 4 and the size parameters of the microstrip line 3 can be obtained, namely, a plurality of groups of electrical parameters and size parameters respectively correspond to a plurality of groups of antenna radiation performance parameters, the debugging space of the antenna radiation performance is increased, the antenna radiation performance parameters can be optimized through adjustment, the antenna radiation performance can be diversified, the antenna radiation performance can be optimized in the continuous adjustment process, the influence of the shell 1 on the antenna radiation performance is reduced, and the problem of high antenna design difficulty in the prior art is solved.

Moreover, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a non-claimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims (10)

1. An antenna, comprising:

a housing having a slit;

the feed substrate is arranged on the inner side of the shell and corresponds to the slit, the feed substrate is provided with a first board surface and a second board surface opposite to the first board surface, the second board surface faces the slit of the shell, the first board surface is provided with a microstrip line, an access antenna feed point of the microstrip line and a matching circuit arranged on the microstrip line, the matching circuit is accessed with at least one lumped element, and the electrical parameters of the lumped element and the size parameters of the microstrip line are adjusted to obtain the performance parameters of the antenna radiation matched with the electrical parameters of the lumped element and the size parameters of the microstrip line.

2. The antenna of claim 1, wherein the matching circuit is located on the same side or on opposite sides of the first panel from the antenna feed point.

3. The antenna of claim 1, wherein the antenna feed is directly connected to the matching circuit; or the antenna feed point is not directly connected with the matching circuit, so that the antenna feed point and the matching circuit are coupled through the microstrip line and/or the space to generate multiple feeding.

4. The antenna according to claim 1, wherein the feeding substrate is disposed corresponding to a middle portion of the slit.

5. An antenna according to claim 1, characterized in that the lumped elements are connected in series and/or in parallel into the matching circuit.

6. The antenna of claim 1, wherein the matching circuit is formed by combining one or more of the following circuit forms: l, pi, and T.

7. The antenna of claim 1, wherein the microstrip line is disposed on the feeding substrate by printing; the lumped element is arranged on the microstrip line in a welding mode.

8. The antenna of claim 1, wherein the second plane of the feeding substrate is disposed on the housing by gluing or welding.

9. The antenna of claim 1, wherein the slot is configured as a rectangular slot having a height in the range of 1mm to 3mm and a length in the range of 20mm to 60mm;

the length range of the feed substrate is 10mm to 50mm, and the width range is 4mm to 10mm.

10. An electronic device, characterized in that it comprises an antenna according to any of claims 1-9.

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