CN214505775U - Antenna and electronic equipment - Google Patents
Antenna and electronic equipment Download PDFInfo
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- CN214505775U CN214505775U CN202022619305.4U CN202022619305U CN214505775U CN 214505775 U CN214505775 U CN 214505775U CN 202022619305 U CN202022619305 U CN 202022619305U CN 214505775 U CN214505775 U CN 214505775U
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Abstract
The embodiment of the application discloses antenna and electronic equipment, the antenna includes metal decking and feed structure, feed structure includes feed transmission line and feed circuit, wherein: an antenna slot is arranged on the metal panel; the feed structure is connected with the antenna slot through at least one feed port of the feed transmission line and is used for feeding to the antenna slot, and the antenna slot is used for radiating electromagnetic waves. By adopting the embodiment of the application, the antenna does not need to be provided with the clearance area, so that the freedom degree of the electronic equipment on the structural design is met, and the radiation efficiency of the antenna is improved.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an antenna and electronic equipment.
Background
At present, an antenna is generally disposed in a circuit area inside an electronic device, a certain clearance area is needed to avoid interference of an internal circuit on electromagnetic waves radiated by the antenna, and the provided clearance area limits the degree of freedom of the electronic device in structural design. However, in order to meet the space requirement of the electronic device in terms of appearance and structural design, the volume of the antenna is continuously reduced, so that the radiation efficiency of the antenna is reduced. Therefore, the degree of freedom in the structural design of the electronic device and the radiation efficiency of the antenna are difficult to be both fulfilled.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an antenna and electronic equipment, can not need for the antenna sets up the headroom district to satisfy and be provided with the degree of freedom of the electronic equipment of antenna on structural design improves the radiation efficiency of antenna simultaneously. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides an antenna, which includes a metal panel, a feeding transmission line, and a feeding structure, where the feeding structure includes a feeding transmission line and a feeding circuit, where:
an antenna slot is arranged on the metal panel;
the feed structure is connected through the feed port of the feed transmission line and used for feeding to the antenna slot, and the antenna slot is used for radiating electromagnetic waves.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the above antenna.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
in one or more embodiments of the present application, an antenna slot may be disposed on the metal panel, and the feeding structure is connected to the antenna slot through a feeding port of the feeding transmission line, so as to form a structure of the antenna. When the antenna is arranged on the electronic equipment, the metal shell of the electronic equipment can be used as the metal panel of the antenna, and electromagnetic waves are radiated through the antenna slot on the metal panel, so that a clearance area does not need to be arranged on the antenna, the freedom degree of the electronic equipment in structural design is met, and meanwhile, the radiation efficiency of the antenna is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an antenna provided in an embodiment of the present application;
fig. 2 is an exemplary schematic diagram of an antenna provided in an embodiment of the present application;
fig. 3 is an exemplary schematic diagram of another antenna provided in an embodiment of the present application;
fig. 4 is an exemplary schematic diagram of another antenna provided in the embodiments of the present application;
fig. 5 is a schematic structural diagram of another antenna provided in an embodiment of the present application;
fig. 6 is an exemplary schematic view of a metal panel provided in an embodiment of the present application;
fig. 7 is a schematic diagram of a reflection loss ratio of an antenna according to an embodiment of the present application;
fig. 8 is a schematic diagram of a reflection loss ratio of another antenna provided in an embodiment of the present application;
fig. 9 is a schematic diagram of a reflection loss ratio of another antenna provided in an embodiment of the present application;
FIG. 10 is a schematic diagram of the isolation of a feed port provided by an embodiment of the present application;
FIG. 11 is a schematic diagram of another isolation of a feed port provided by an embodiment of the present application;
fig. 12 is a schematic structural diagram of another antenna provided in the embodiment of the present application;
fig. 13 is an exemplary schematic diagram of another antenna provided in an embodiment of the present application;
fig. 14 is a schematic top view of another antenna provided in the embodiments of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it is noted that, unless explicitly stated or limited otherwise, "including" and "having" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The present application will be described in detail with reference to specific examples.
In one embodiment, as shown in fig. 1, an antenna is proposed, the antenna 1 includes a metal panel 11 and a feeding structure 12, the feeding structure 12 includes a feeding transmission line 121 and a feeding circuit 122, wherein:
an antenna slot 111 is arranged on the metal panel 11;
the feeding structure 12 is connected to the antenna slot 111 through a feeding port 1211 of the feeding transmission line 121 for feeding the antenna slot 111, and the antenna slot 111 is used for radiating electromagnetic waves.
It should be noted that, when the antenna 1 is disposed on an electronic device, the metal panel 11 may be a metal casing of the electronic device, where for the electronic device with a display screen, the metal casing includes a metal bottom plate and a metal outer frame of the electronic device.
The antenna slot 111 is a closed slot, and the shape of the antenna slot may be rectangular, bendable, or curved. As shown in fig. 2, an exemplary schematic diagram of an antenna includes a metal panel 11 and a feeding structure 12, wherein an antenna slot 111 disposed on the metal panel 11 is in a curve shape, the feeding structure 12 is connected to the antenna slot 111 through a feeding port 1211 of a feeding transmission line 121 for feeding power to the antenna slot 111, and the antenna slot 111 is used for radiating an electromagnetic wave.
The feeding transmission line 121 is an electrical signal transmission line connecting the antenna and the feeding structure, and includes at least one of a microstrip line, a waveguide, and a coaxial line. The microstrip line is a microwave transmission line formed by a single conductor strip supported on a dielectric substrate, is suitable for a planar structure transmission line of an integrated circuit, and is characterized in that: small size, light weight, wide frequency band, high reliability, low cost, low power consumption and low power capacity. The waveguide is a structure for directionally guiding electromagnetic waves, for example, a possible coplanar waveguide is a structure in which a central conductor strip is formed on one surface of a dielectric substrate, and conductor planes are formed on two sides adjacent to the central conductor strip, as shown in fig. 3, and an exemplary schematic diagram of a coplanar waveguide includes a dielectric substrate 1231, a central conductor strip 1232, a ground conductor strip 1233, and a ground conductor strip 1234, wherein the central conductor strip 1232 is in contact with the antenna slot 111 for feeding, and is characterized by small volume, light weight, planar structure, no cut-off frequency, and multi-band operation. The coaxial line is a broadband microwave transmission line which is composed of two coaxial cylindrical conductors, and air or a high-frequency medium is filled between an inner conductor and an outer conductor.
Optionally, the feeding transmission line 121 is respectively provided with a feeding port 1211 and a feeding port 1212, and the other end of the feeding transmission line 121 is connected to the metal panel 11 for grounding the feeding transmission line 121. As shown in fig. 4, an exemplary schematic diagram of an antenna includes a metal panel 11, a feeding transmission line 121, and a feeding circuit 122, wherein an antenna slot 111 disposed on the metal panel 11 is rectangular, the feeding circuit 122 is connected to the slot antenna 111 through a feeding port 1211 and a feeding port 1212 of the feeding transmission line 121, respectively, and the other end of the feeding transmission line 121 is connected to the metal panel 11 for grounding the feeding transmission line 121.
Specifically, the feeding transmission line 121 may be connected to the metal panel 11 through a conductive cloth. The conductive fabric is made of fiber fabric as base material and through pre-treatment and electroplating metal coating to form the conductive fiber fabric with metal characteristic and electromagnetic wave shielding effect.
The feeding structure 12 is a structure for feeding power to the antenna transmitting end, and includes a feeding circuit, which may be a single-layer circuit board, or a power controller.
In this embodiment, an antenna slot may be disposed on the metal panel, and the feeding structure is connected to the antenna slot through a feeding port of the feeding transmission line, so as to form the structure of the antenna. When the antenna is arranged on the electronic equipment, the metal shell of the electronic equipment can be used as the metal panel of the antenna, and electromagnetic waves are radiated through the antenna slot on the metal panel, so that a clearance area does not need to be arranged on the antenna, the freedom degree of the electronic equipment in structural design is met, and meanwhile, the radiation efficiency of the antenna is improved.
Referring to fig. 5, fig. 5 is a schematic structural diagram of another embodiment of an antenna according to the present application. The antenna 1 comprises a metal panel 11 and a feeding structure 12 in the first embodiment, and in this embodiment, the feeding structure 12 further comprises a reactance device 123, wherein:
the metal panel 11, the feeding transmission line 121 and the feeding circuit 122 are the same as those of the first embodiment, and reference may be made to the first embodiment for details, which are not described herein again.
The reactance device 123 is connected to the feeding transmission line for blocking electromagnetic waves of a non-operating frequency between the feeding ports, thereby increasing the isolation between the feeding ports. Taking the reactance device 123 as an example of a capacitor device, the capacitor device C is connected to the feeding transmission line 121, and blocks electromagnetic waves of a non-operating frequency between the feeding port 1211 and the feeding port 1212. The electromagnetic wave with the non-working frequency refers to an electromagnetic wave which does not need to be radiated by the antenna, for example, when the electromagnetic wave radiated by the antenna is applied to a narrowband internet of things, that is, the working frequency of the antenna is 900MHz and 1800MHz, the electromagnetic wave with the non-working frequency is other than the frequencies of 900MHz and 1800 MHz.
Optionally, the reactance device 123 may be a capacitive device, an inductive device, or a circuit device formed by a plurality of capacitive devices or inductive devices.
It should be noted that the frequency band of the electromagnetic wave can be controlled by controlling the size of the antenna slot, the position of the feed port on the antenna slot, and the parameters of the reactance device.
Specifically, as shown in fig. 6, an exemplary schematic diagram of a metal panel is shown, where an antenna slot 111 disposed on a metal panel 11 is rectangular, and a feeding port 1211 and a feeding port 1212 are disposed across the antenna slot 111, where the size of the metal panel is 100 × 290mm, the size of the antenna slot is 3 × 181mm, the feeding port 1211 of a feeding transmission line is disposed at a position 43mm away from one end of the antenna slot 111, and the feeding port 1212 is disposed at a position 16.1mm away from the other end of the antenna slot 111. Setting the size of the antenna slot and the position of the feed port on the antenna slot according to the data, and adjusting the parameters of the reactance device to match with the size data, thereby obtaining a schematic diagram of the reflection loss rate of the antenna 1 when radiating electromagnetic waves of different frequencies as shown in fig. 7-9, wherein a dotted line represents the reflection loss rate of the feed port 1211 when radiating electromagnetic waves of different frequencies, a solid line represents the reflection loss rate of the feed port 1212 when radiating electromagnetic waves of different frequencies, a vertical axis represents the reflection loss rate, and a horizontal axis represents the frequency of the electromagnetic waves. When the reflection loss ratio is lower than 5dB, it indicates that the port can radiate electromagnetic waves of the frequency, and thus, the frequency bands that the feed port 112 can radiate are about 830MHz to 983MHz and 1.75GHz to 2.92GHz, and the frequency band that the feed port 113 can radiate is about 4.3GHz to 6.5 GHz. Therefore, the frequency bands radiated by the antenna comprise 900MHz and 1800MHz, which can be applied to Narrow-Band-Internet of Things (NB-IOT), and 2.4-2.48 GHz and 5.15-5.85 GHz, which can be applied to single-frequency Bluetooth or dual-frequency WiFi.
Note that, as shown in fig. 10 and 11, simulation data diagrams of the feed port 1211 and the feed port 1212 in the antenna 1 are shown, in which the vertical axis indicates the degree of isolation between the feed port 1211 and the feed port 1212, and the horizontal axis indicates the frequency of the electromagnetic wave. Therefore, in the frequency band of the electromagnetic waves which can be radiated by the power feeding ports 1211 and 1212, the isolation between the power feeding ports 1211 and 1212 is below-10 dB, and the electromagnetic waves with the non-working frequency between the power feeding ports can be effectively blocked.
In this embodiment, an antenna slot may be disposed on the metal panel, and the feeding structure is connected to the antenna slot through a feeding port of the feeding transmission line, so as to form the structure of the antenna. When the antenna is arranged on the electronic equipment, the metal shell of the electronic equipment can be used as the metal panel of the antenna, and electromagnetic waves are radiated through the antenna slot on the metal panel, so that a clearance area does not need to be arranged on the antenna, the freedom degree of the electronic equipment in structural design is met, and meanwhile, the radiation efficiency of the antenna is improved. Furthermore, a reactance device is added in the antenna structure and connected with the feed transmission line, so that electromagnetic waves with non-working frequency between the feed ports can be blocked, and the isolation between the feed ports is increased. In addition, the frequency band of the electromagnetic wave can be controlled by controlling the size of the antenna slot, the position of the feed port on the antenna slot and the parameters of the reactance device, so that the antenna radiates electromagnetic waves with different frequency bands.
Referring to fig. 12, fig. 12 is a schematic structural diagram of another embodiment of an antenna according to the present application. The antenna 1 comprises a metal panel 11 and a feeding structure 12 in the first embodiment, and in this embodiment, the antenna 1 further comprises a metal shielding case 13, wherein:
the metal panel 11 and the feeding structure 12 are the same as those of the first embodiment, and reference may be made to the first embodiment for details, which are not described herein again.
The metal shielding case 13 is disposed on the metal panel 11 and connected to the metal panel, and the feeding structure 12 is disposed inside the metal shielding case 13, so as to shield interference of an internal circuit in the electronic device provided with the antenna on the antenna and control the radiation pattern of the antenna to come out.
Specifically, as shown in fig. 13, an exemplary schematic diagram of an antenna includes a metal panel 11, a feeding structure 12, and a metal shielding cover 13, where an antenna slot 111 disposed on the metal panel 11 is rectangular, the feeding structure 12 is connected to the antenna slot 111 through a feeding port 1211 of a feeding transmission line 121, the metal shielding cover 13 is disposed on the metal panel 11, and the feeding structure 12 is located inside the metal shielding cover 13. Wherein the other end of the feeding transmission line 121 is connected to the metallic shield 13 for grounding the feeding transmission line 121, thereby simplifying the structure of the antenna 1.
It should be noted that, as shown in fig. 14, a schematic top view of a possible antenna, a metal shielding cover 13 is located on a side of the metal panel 11 connected to the feeding structure 12 to control the front of the radiation pattern of the antenna.
Alternatively, the metal shielding case 13 and the metal panel 11 may be detachably connected.
In this embodiment, an antenna slot may be disposed on the metal panel, and the feeding structure is connected to the antenna slot through a feeding port of the feeding transmission line, so as to form the structure of the antenna. When the antenna is arranged on the electronic equipment, the metal shell of the electronic equipment can be used as the metal panel of the antenna, and electromagnetic waves are radiated through the antenna slot on the metal panel, so that a clearance area does not need to be arranged on the antenna, the freedom degree of the electronic equipment in structural design is met, and meanwhile, the radiation efficiency of the antenna is improved. In addition, a metal shielding cover is added in the antenna structure, the metal shielding cover is arranged on the metal panel, and the feed structure is positioned inside the metal shielding cover, so that the interference of an internal circuit in the electronic equipment to the antenna can be shielded, and meanwhile, the radiation pattern of the antenna is controlled to be advanced, and the radiation efficiency of the antenna is improved.
An embodiment of the present application further provides an electronic device, where the electronic device includes the antenna described above, and the metal panel is a metal housing of the electronic device. The electronic device can be a smart phone, a tablet computer, a tracker and the like. The electronic equipment with the antenna can use the metal shell of the electronic equipment as the metal panel of the antenna, and radiates electromagnetic waves through the antenna slot on the metal panel, so that a clearance area does not need to be arranged for the antenna, the freedom degree of the electronic equipment on the structural design is met, and meanwhile, the radiation efficiency of the antenna is improved. Furthermore, a reactance device is added in the antenna structure and connected with a feed transmission line, so that electromagnetic waves between the feed ports can be blocked, and the isolation between the feed ports is increased. In addition, the frequency band of the electromagnetic wave can be controlled by controlling the size of the antenna slot, the position of the feed port on the antenna slot and the parameters of the reactance device, so that the antenna radiates electromagnetic waves with different frequency bands. Can add metallic shield cover in antenna structure, metallic shield cover sets up on metal decking, and feed structure is located inside the metallic shield cover, can shield the interference of internal circuit to the antenna among the electronic equipment, and the antedisplacement of control antenna radiation pattern simultaneously to improve the radiation efficiency of antenna.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.
Claims (10)
1. An antenna, comprising a metal panel and a feed structure, the feed structure comprising a feed transmission line and a feed circuit, wherein:
an antenna slot is arranged on the metal panel;
the feed structure is connected with the antenna slot through at least one feed port of the feed transmission line and is used for feeding to the antenna slot, and the antenna slot is used for radiating electromagnetic waves.
2. The antenna of claim 1, wherein the feed structure further comprises a reactive device, wherein:
the reactance device is connected with the feed transmission line and used for blocking electromagnetic waves with non-working frequency between the feed ports.
3. The antenna according to claim 2, wherein the frequency band of the electromagnetic wave is controlled by controlling the size of the antenna slot, the position of the feed port on the antenna slot, and parameters of the reactive device.
4. The antenna of claim 1, wherein the feed circuit is a single layer circuit board.
5. The antenna of claim 1, further comprising a metallic shield disposed on and coupled to the metallic panel, wherein the feed structure is located within the metallic shield.
6. The antenna of claim 5, wherein one end of the feeding transmission line is provided with the feeding port, and the other end of the feeding transmission line is connected to the metal panel or the metal shield for grounding the feeding transmission line.
7. The antenna of claim 1, wherein the feed transmission line comprises at least one of a microstrip line, a waveguide, and a coaxial line.
8. The antenna of claim 1, wherein the antenna slot is a closed slot.
9. The antenna of claim 7, wherein the antenna slot has a shape that includes at least one of a rectangle, a bend, or a curve.
10. An electronic device, characterized in that the electronic device comprises the antenna according to any one of claims 1 to 9, and the metal panel is a metal housing of the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619305.4U CN214505775U (en) | 2020-11-12 | 2020-11-12 | Antenna and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022619305.4U CN214505775U (en) | 2020-11-12 | 2020-11-12 | Antenna and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214505775U true CN214505775U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022619305.4U Active CN214505775U (en) | 2020-11-12 | 2020-11-12 | Antenna and electronic equipment |
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|---|---|
| CN (1) | CN214505775U (en) |
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2020
- 2020-11-12 CN CN202022619305.4U patent/CN214505775U/en active Active
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