CN117832843A - Antenna and electronic equipment - Google Patents

Abstract

The invention discloses an antenna and electronic equipment, wherein the antenna comprises a substrate, a feed circuit, a connecting circuit, an impedance component and a first component, a clearance area and a non-clearance area except the clearance area are arranged on the substrate, and the connecting circuit comprises a first connecting part and a second connecting part which are electrically connected; a first antenna loop and a second antenna loop are arranged in the clearance area, and the first antenna loop comprises a feed circuit, an impedance component, a first connecting part and a first component which are electrically connected in sequence; the second antenna loop includes a feed line, an impedance component, and a second connection portion that are electrically connected in order. The invention is provided with the first antenna loop and the second antenna loop, so that double-frequency operation is realized, the first antenna loop and the second antenna loop share one feed line, the impedance of the antenna is adjusted through the impedance component, the frequency shift of resonance is adjusted through the first component, the performance of the antenna is ensured, and meanwhile, the volume of the antenna can be reduced.

Description

Antenna and electronic equipment

Technical Field

The invention relates to the field of electronic equipment, in particular to an antenna and electronic equipment.

Background

At present, modern communication technology is rapidly developed, and an antenna is used as an important energy converter in a communication system and is responsible for mutually converting electromagnetic waves and electric signals. The bandwidth requirement of the electronic equipment is also higher and higher, namely one antenna is required to cover a plurality of communication frequency bands simultaneously, so that the antenna can realize dual-frequency or multi-frequency operation, and the traditional dual-frequency antenna has the defect of larger volume and does not meet the requirement of miniaturization of the electronic equipment.

Disclosure of Invention

The invention mainly aims to provide an antenna and electronic equipment, so as to solve the problem that the traditional dual-frequency antenna is large in size.

In order to achieve the above object, an antenna according to the present invention includes a substrate, a feed line, a connection line, an impedance component, and a first component, where a clearance area and a non-clearance area other than the clearance area are provided on the substrate, the connection line includes a first connection portion and a second connection portion that are electrically connected, and the first connection portion and the second connection portion are respectively located at two sides of the impedance component; a first antenna loop and a second antenna loop are arranged in the clearance area, the first antenna loop comprises the feed circuit, the impedance component, the first connecting part and the first component which are electrically connected in sequence, and one end of the first component, which is far away from the first connecting part, is electrically connected with the non-clearance area; the second antenna loop includes the feed line, the impedance component, and the second connection portion electrically connected in sequence.

Preferably, a connection region is arranged at a position, close to the first component, of the non-clearance region, and the first component is electrically connected with the connection region through a mounting circuit.

Preferably, the antenna further comprises a second component, the second component is disposed on the second connection portion, and the second antenna loop comprises the feed line, the impedance component, the second connection portion and the second component which are electrically connected in sequence.

Preferably, the feed line and the connection line are both metal conduction bands.

Preferably, the antenna further comprises a steel sheet, wherein the steel sheet is connected with the substrate and is arranged corresponding to the clearance area, and the feed line and the connection line are distributed on the steel sheet; or, the feed line and the connection line are LDS antennas.

Preferably, the first connection part comprises a first connection section, a second connection section and a third connection section which are electrically connected in sequence, the first connection section is electrically connected with the second connection part, and the first connection section and the second connection part are positioned on different planes with the substrate; the second connecting section is perpendicular to the plane of the substrate; the third connecting section is arranged on the non-clean space area, and one end, far away from the second connecting section, of the third connecting section is electrically connected with the first component.

Preferably, the antenna further comprises a supporting circuit, wherein the supporting circuit comprises a supporting section and a mounting section which are electrically connected, and the mounting section is arranged on the non-clearance area; the support section is connected with the connection part of the first connection section and the second connection part, and the support section is perpendicular to the plane where the substrate is located.

Preferably, the first antenna loop includes the feeder line, the impedance component, the mounting section, the support section, the first connection section, the second connection section, the third connection section, and the first component electrically connected in this order; the second antenna loop comprises the feed circuit, the impedance component, the mounting section, the supporting section and the second connecting part which are electrically connected in sequence.

In addition, the invention also provides electronic equipment, which comprises the antenna.

Preferably, the electronic device is an intelligent doorbell or a security camera.

In the technical scheme of the invention, a clearance area and a non-clearance area are arranged on the substrate, wherein the non-clearance area is an area of the substrate except the clearance area, and copper is covered on the non-clearance area to serve as an antenna radiation area part. The connecting circuit comprises a first connecting part and a second connecting part, and the first connecting part and the second connecting part are respectively positioned at the left side and the right side of the impedance component. The impedance component is a capacitor component and is used for adjusting the impedance of the antenna. The first antenna loop and the second antenna loop are both disposed in the clearance area. The first antenna loop comprises a feed line, an impedance component, a first connecting part and a first component which are electrically connected in sequence; the feed line is used as a feed input port of the whole antenna and is used for inputting signals; the impedance component is used for adjusting the impedance of the antenna; the first component is used for debugging the frequency shift of resonance, and the first component can be a capacitor, an inductor or a resistor, and the value of the first component is influenced by the total length of the connecting line and can be flexibly changed. One end of the first component, which is far away from the first connecting part, is electrically connected with the non-clean space area, so that the grounding is realized. The second antenna loop comprises a feed line, an impedance component and a second connecting part which are electrically connected in sequence, and the resonance center frequency of the second antenna loop is mainly influenced by the total length of the feed line and the second connecting part, namely, the resonance center frequency point can be changed by changing the length of the second connecting part.

The antenna provided by the invention is provided with the first antenna loop and the second antenna loop, so that double-frequency operation is realized, the first antenna loop and the second antenna loop share one feed line, the impedance of the antenna is adjusted through the impedance component, the frequency shift of resonance is adjusted through the first component, the performance of the antenna is ensured, and meanwhile, the size of the antenna can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic structural diagram of another embodiment of an antenna according to the present invention;

fig. 3 is a schematic structural diagram of an antenna according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of an antenna according to another embodiment of the present invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Antenna	313	Third connecting section
10	Substrate board	32	Second connecting part
				11	Goaf	40	Impedance component
12	Non-headroom region	50	First component
				121	Connection region	60	Mounting circuit
20	Feed line	70	Second component
				30	Connection circuit	80	Support circuit
31	First connecting part	81	Support section
				311	First connecting section	82	Mounting section
312	Second connecting section

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

The description of the orientations of "up", "down", "front", "rear", "left", "right", etc. in the present invention is based on the orientation shown in fig. 4, and is merely for explaining the relative positional relationship between the components in the posture shown in fig. 4, and if the specific posture is changed, the directional indication is changed accordingly.

The invention provides an antenna 100 and an electronic device.

In an embodiment, as shown in fig. 1 to 4, an antenna 100 includes a substrate 10, a feeder circuit 20, a connection circuit 30, an impedance component 40, and a first component 50, a clearance area 11 and a non-clearance area 12 except the clearance area 11 are disposed on the substrate 10, the connection circuit 30 includes a first connection portion 31 and a second connection portion 32 that are electrically connected, and the first connection portion 31 and the second connection portion 32 are respectively located at two sides of the impedance component 40; a first antenna 100 loop and a second antenna 100 loop are arranged in the clearance area 11, the first antenna 100 loop comprises a feed line 20, an impedance component 40, a first connecting part 31 and a first component 50 which are electrically connected in sequence, and one end of the first component 50, which is far away from the first connecting part 31, is electrically connected with the non-clearance area 12; the second antenna 100 loop includes the feeder line 20, the impedance component 40, and the second connection portion 32 electrically connected in this order.

The substrate 10 is provided with a clearance area 11 and a non-clearance area 12, the non-clearance area 12 being an area of the substrate 10 excluding the clearance area 11, the non-clearance area 12 being covered with copper as a radiating portion of the antenna 100. The connection line 30 includes a first connection portion 31 and a second connection portion 32, and the first connection portion 31 and the second connection portion 32 are located at left and right sides of the impedance component 40, respectively. The impedance component 40 is a capacitor-like component for adjusting the impedance of the antenna 100. Both the first antenna 100 loop and the second antenna 100 loop are disposed within the headroom region 11. The first antenna 100 loop is a WIFI2.4G antenna 100 loop, and the first antenna 100 loop includes a feeder circuit 20, an impedance component 40, a first connection portion 31, and a first component 50 electrically connected in order; the feed line 20 serves as a feed input port of the entire antenna 100 for signal input; the impedance component 40 is used for adjusting the impedance of the antenna 100; the first component 50 is used to debug the frequency shift of resonance, the first component 50 may be capacitance, inductance or resistance, and the value of the first component 50 is affected by the total length of the connection line 30 and can be flexibly changed. The end of the first component 50 remote from the first connection portion 31 is electrically connected to the non-empty region 12, thereby realizing grounding. The second antenna 100 loop is a WIFI5G antenna 100 loop, the second antenna 100 loop includes a feeding circuit 20, an impedance component 40 and a second connection portion 32 that are electrically connected in sequence, and the resonant center frequency of the second antenna 100 loop is mainly affected by the total length of the feeding circuit 20 and the second connection portion 32, that is, changing the length of the second connection portion 32 can change the resonant center frequency point.

The antenna 100 in the invention is provided with the first antenna 100 loop and the second antenna 100 loop, so that double-frequency operation is realized, the first antenna 100 loop and the second antenna 100 loop share one feed line 20, the impedance of the antenna 100 is adjusted through the impedance component 40, the frequency shift of resonance is debugged through the first component 50, the performance of the antenna 100 is ensured, and meanwhile, the volume of the antenna 100 can be reduced.

In an embodiment, referring to fig. 1 in combination, a connection region 121 is disposed in the non-headroom region 12 near the first component 50, and the first component 50 is electrically connected to the connection region 121 through a mounting circuit 60.

The connecting area 121 is arranged on the non-clearance area 12, the connecting area 121 is located at a position close to the first component 50, one end, away from the first connecting portion 31, of the first component 50 is electrically connected with the connecting area 121, the connecting area 121 is arranged at a position close to the first component 50, the first component 50 is electrically connected with the non-clearance area 12 conveniently, and the bandwidth of WIFI2.4G resonance can be adjusted by adjusting the size of the connecting area 121.

Specifically, the length of the connection region 121 along the left-right direction is H1, the length of the connection region 121 along the front-rear direction is H2, H1 is greater than or equal to 5mm, and H2 is greater than or equal to 2mm, so that the performance of the antenna 100 is better. Preferably, H1 is 7mm and H2 is 3.5mm.

One end of the mounting circuit 60 is electrically connected with one end of the first component 50 far away from the first connection part 31, the other end of the mounting circuit 60 is electrically connected with the connection region 121, the first component 50 is conveniently welded on the substrate 10 by arranging the mounting circuit 60, so that the mounting process of the first component 50 is smoother, and the frequency shift of resonance can be debugged by adjusting the length of the mounting circuit 60, so that the debugging of the antenna 100 is more convenient.

In an embodiment, referring to fig. 3 in combination, the antenna 100 further includes a second component 70, the second component 70 is disposed on the second connection portion 32, and the loop of the second antenna 100 includes the feeding circuit 20, the impedance component 40, the second connection portion 32 and the second component 70 electrically connected in sequence.

The second component 70 is disposed on the second connection portion 32, and in particular, the second component 70 may be disposed at an end of the second connection portion 32 away from the first connection portion 31, or may be disposed at an intermediate position of the second connection portion 32, so as to facilitate soldering the second component 70 on the substrate 10. The loop of the second antenna 100 includes the feeding circuit 20, the impedance component 40, the second connection part 32 and the second component 70 which are electrically connected in sequence, the second component 70 is used for debugging the frequency shift of resonance, and a debugging point is added by setting the second component 70, so that the debugging process is more flexible. The second component 70 may be a capacitor, an inductor or a resistor, and the value of the second component 70 is influenced by the total length of the connection line 30 and can be flexibly changed.

In one embodiment, referring to fig. 1 to 3, the feeding circuit 20 and the connecting circuit 30 are both metal conduction bands.

The feeding circuit 20 and the connecting circuit 30 are metal conduction bands and are formed on the substrate 10 by printing, so that the manufacturing and production are convenient, the process is simple, and the cost can be reduced. Specifically, the substrate 10 is a PCB board.

In an embodiment, referring to fig. 4 in combination, the antenna 100 further includes a steel sheet, which is connected to the substrate 10 and is disposed corresponding to the clearance area 11, and on which the feed line 20 and the connection line 30 are disposed.

The steel sheet is connected with the base plate 10 to realize the installation and fixation, and is arranged corresponding to the clearance area 11, and the feeding circuit 20 and the connecting circuit 30 are arranged on the steel sheet. The feeding circuit 20 and the connecting circuit 30 are arranged on the steel sheet, the steel sheet antenna 100 is suitable for almost all small electronic products, can be used as a complex antenna 100 with more than ten frequency bands, and has good performance and lower cost.

Alternatively, the feed line 20 and the connection line 30 are both LDS antennas 100. The LDS antenna 100 engraves the pattern of the antenna 100 by laser, which is very suitable for applications with compact internal space. The LDS antenna 100 can fully utilize various irregular surfaces in the three-dimensional space, and reduce the volume of the antenna 100.

Based on the above embodiment, please refer to fig. 4 in combination, the first connection portion 31 includes a first connection section 311, a second connection section 312 and a third connection section 313 electrically connected in sequence, the first connection section 311 is electrically connected with the second connection portion 32, and the first connection section 311 and the second connection portion 32 are located on different planes with the substrate 10; the second connecting section 312 is perpendicular to the plane of the substrate 10; the third connection section 313 is disposed on the non-clearance area 12, and an end of the third connection section 313 away from the second connection section 312 is electrically connected to the first component 50.

The first connection section 311 and the second connection section 32 extend in the left-right direction, and the right end of the first connection section 311 is electrically connected to the second connection section 32, thereby electrically connecting the first connection section 31 and the second connection section 32. The first connection section 311 and the second connection section 32 are located on different planes from the substrate 10, specifically, the planes of the first connection section 311 and the second connection section 32 and the plane of the substrate 10 are arranged at intervals in the up-down direction. The second connecting section 312 extends along the up-down direction, and the second connecting section 312 is perpendicular to the plane of the substrate 10. The third connection section 313 extends along the left-right direction, the third connection section 313 is disposed on the non-clearance area 12, and one end of the third connection section 313 away from the second connection section 312 is electrically connected with the first component 50, so as to realize the electrical connection between the first connection portion 31 and the first component 50.

The first connection portion 31 is matched by arranging the first connection section 311, the second connection section 312 and the third connection section 313, so that the first connection section 311 and the second connection portion 32 are located on different planes with the substrate 10, the antenna 100 has better directivity and space selectivity, various irregular surfaces with three-dimensional space are fully utilized, and the volume of the antenna 100 is reduced.

Specifically, referring to fig. 4 in combination, the antenna 100 further includes a supporting circuit 80, the supporting circuit 80 includes a supporting section 81 and a mounting section 82 electrically connected, and the mounting section 82 is disposed on the non-headroom region 12; the support section 81 is connected to the connection portion between the first connection section 311 and the second connection portion 32, and the support section 81 is perpendicular to the plane of the substrate 10.

The support line 80 includes a support section 81 and a mounting section 82, the mounting section 82 extends in the front-rear direction, the mounting section 82 is disposed on the non-clearance area 12, and electrical connection with the impedance component 40 is achieved by providing the mounting section 82. The support section 81 extends along the up-down direction, the support section 81 is connected with the connection part of the first connection section 311 and the second connection part 32, and the support section 81 is perpendicular to the plane where the substrate 10 is located, and the support section 81 is arranged to support the connection circuit 30, so that the structure of the antenna 100 is more stable and reliable, and the structural stability of the antenna 100 is improved.

Referring to fig. 4 in combination, the loop of the first antenna 100 includes the feeding circuit 20, the impedance component 40, the mounting section 82, the supporting section 81, the first connecting section 311, the second connecting section 312, the third connecting section 313 and the first component 50 electrically connected in sequence; the second antenna 100 loop includes the feeder line 20, the impedance component 40, the mounting section 82, the support section 81, and the second connection portion 32 electrically connected in this order.

The loop of the first antenna 100 includes a feeding circuit 20, an impedance component 40, a mounting section 82, a supporting section 81, a first connecting section 311, a second connecting section 312, a third connecting section 313 and a first component 50 which are electrically connected in order, the feeding circuit 20 serving as a feeding input port of the whole antenna 100 for signal input; the impedance component 40 is used for adjusting the impedance of the antenna 100; the mounting section 82 is electrically connected with the impedance component 40, and the supporting section 81 is used for supporting the connecting line 30; the first connection section 311, the second connection section 312 and the third connection section 313 are matched, so that the first connection section 311 and the second connection section 32 are positioned on different planes with the substrate 10, the antenna 100 has better directivity and space selectivity, various irregular surfaces with three-dimensional space are fully utilized, and the volume of the antenna 100 is reduced; the first component 50 is used to debug the frequency shift of resonance, the first component 50 may be capacitance, inductance or resistance, and the value of the first component 50 is affected by the total length of the connection line 30 and can be flexibly changed. The end of the first component 50 remote from the first connection portion 31 is electrically connected to the non-empty region 12, thereby realizing grounding.

The second antenna 100 loop includes a feeding circuit 20, an impedance component 40, a mounting section 82, a supporting section 81, and a second connection portion 32 electrically connected in this order, the feeding circuit 20 serving as a feeding input port of the entire antenna 100 for signal input; the impedance component 40 is used for adjusting the impedance of the antenna 100; the mounting section 82 is electrically connected with the impedance component 40, and the supporting section 81 is used for supporting the connecting line 30; the center frequency of the loop resonance of the second antenna 100 is mainly affected by the total length of the feeder circuit 20 and the second connection portion 32, i.e. changing the length of the second connection portion 32 may change the center frequency point of the resonance.

In addition, the invention also provides electronic equipment, which comprises the antenna 100. The specific structure of the antenna 100 refers to the above embodiment, and since the electronic device adopts all the technical solutions of the above embodiment, at least the beneficial effects brought by the technical solutions of the above embodiment are provided, and will not be described in detail herein.

In an embodiment, the electronic device is a smart doorbell or a security camera. The antenna in the invention is applied to an intelligent doorbell or a camera, can realize double-frequency operation, ensures the performance of the antenna 100, and can reduce the volume of the antenna 100.

In other embodiments, the electronic device may also be an electronic device other than a smart doorbell or security camera, such as a smart door lock or smart watch.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. The antenna is characterized by comprising a substrate, a feed circuit, a connecting circuit, an impedance component and a first component, wherein a clearance area and a non-clearance area except for the clearance area are arranged on the substrate, the connecting circuit comprises a first connecting part and a second connecting part which are electrically connected, and the first connecting part and the second connecting part are respectively positioned at two sides of the impedance component; a first antenna loop and a second antenna loop are arranged in the clearance area, the first antenna loop comprises the feed circuit, the impedance component, the first connecting part and the first component which are electrically connected in sequence, and one end of the first component, which is far away from the first connecting part, is electrically connected with the non-clearance area; the second antenna loop includes the feed line, the impedance component, and the second connection portion electrically connected in sequence.

2. The antenna of claim 1, wherein the non-headroom region is provided with a connection region proximate to the first component, and wherein the first component is electrically connected to the connection region via a mounting circuit.

3. The antenna of claim 1, further comprising a second component disposed on the second connection, a second antenna loop comprising the feed line, the impedance component, the second connection, and the second component electrically connected in sequence.

4. An antenna according to any one of claims 1 to 3, wherein the feed line and the connection line are both metallic strips.

5. An antenna according to any one of claims 1 to 3, further comprising a steel sheet connected to the substrate and disposed in correspondence with the clearance area, the steel sheet having the feed line and the connection line disposed thereon; or,

the feed line and the connecting line are LDS antennas.

6. The antenna of claim 5, wherein the first connection portion comprises a first connection section, a second connection section, and a third connection section electrically connected in sequence, the first connection section being electrically connected to the second connection portion, and the first connection section and the second connection portion each being in a different plane from the substrate; the second connecting section is perpendicular to the plane of the substrate; the third connecting section is arranged on the non-clean space area, and one end, far away from the second connecting section, of the third connecting section is electrically connected with the first component.

7. The antenna of claim 6, further comprising a support circuit comprising a support section and a mounting section electrically connected, the mounting section disposed on the non-clearance area; the support section is connected with the connection part of the first connection section and the second connection part, and the support section is perpendicular to the plane where the substrate is located.

8. The antenna of claim 7, wherein the first antenna loop comprises the feed line, the impedance component, the mounting section, the support section, the first connection section, the second connection section, the third connection section, and the first component electrically connected in sequence; the second antenna loop comprises the feed circuit, the impedance component, the mounting section, the supporting section and the second connecting part which are electrically connected in sequence.

9. An electronic device, characterized in that it comprises an antenna according to any one of claims 1 to 8.

10. The electronic device of claim 9, wherein the electronic device is a smart doorbell or a security camera.