CN219350682U

CN219350682U - Full-band antenna

Info

Publication number: CN219350682U
Application number: CN202223224597.7U
Authority: CN
Inventors: 张文涛
Original assignee: Beijing Ruixiang Intelligent Communication Technology Co ltd
Current assignee: Beijing Ruixiang Intelligent Communication Technology Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-14
Anticipated expiration: 2032-12-02

Abstract

The utility model provides a full-band antenna, which comprises a main radiation component, a parasitic coupling component, a substrate, a feed point, a first grounding point, a second grounding point and a matching circuit, wherein the parasitic coupling component is connected with the main radiation component; the feed point is electrically connected with the main radiation component; the first grounding point is electrically connected with the main radiation component; the second grounding point is electrically connected with the parasitic coupling component; the matching circuit is electrically connected with the feed point; a conducting groove is formed in the substrate; the matching circuit is used for tuning the antenna under different conditions, so that better radiation characteristics can be realized. In the assembly process, the USB socket or other terminal interfaces can be through the inside of the whole antenna, and the advantage is that the USB socket or other terminal interfaces and the full-band antenna share the space inside the terminal, so that the antenna can achieve good radiation effect on the premise that the antenna does not occupy more terminal internal space independently.

Description

Full-band antenna

Technical Field

The utility model relates to the field of wireless communication, in particular to an antenna system for improving WiFi antenna gain through a super surface.

Background

With the rapid development of the wireless communication industry, especially the popularization of 5G multi-band, only the support of 5G multi-band may require several antennas, and at this time, more antennas need to be integrated in the limited internal space of the mobile terminal, so terminal antenna manufacturers need to improve the structure of the antennas, and reduce the space occupation rate of the antennas. At present, how to integrate multi-band antennas and reduce the size of the antennas becomes an important research direction for terminal manufacturers. The existing technical scheme is to design the antenna through the dielectric plates on the same side, and the bandwidth of the antenna is limited due to the limited size, so that wide bandwidth radiation is difficult to realize.

Meanwhile, more components, such as a speaker, a receiver, a USB interface, etc., are often integrated inside the terminal. The conventional antenna trace design often bypasses the components, so that a lot of antenna trace space is obviously sacrificed, thereby affecting radiation efficiency.

Therefore, it is highly desirable to design a full-band antenna with small space occupation to solve the current antenna size and bandwidth requirements.

Disclosure of Invention

The utility model aims to provide a full-band antenna, which solves the problems of large occupied space and poor radiation performance of the traditional full-band antenna due to wiring limitation.

In order to solve the above problems, the present utility model provides a full-band antenna, which includes a main radiating element, a parasitic coupling element, a substrate, a feeding point, a first grounding point, a second grounding point, and a matching circuit; the feed point is electrically connected with the main radiation component; the first grounding point is electrically connected with the main radiation component; the second grounding point is electrically connected with the parasitic coupling component; the matching circuit is electrically connected with the feed point; and the substrate is provided with a conducting groove.

Optionally, in the full-band antenna, the radiation component further includes a first antenna branch, a second antenna branch, a third antenna branch, and a fourth antenna branch; the first antenna branch is connected with the second antenna branch; the second antenna branch is connected with the third antenna branch; the third antenna branch is connected with the fourth antenna branch; the third antenna branch is electrically connected with the first grounding point; the fourth antenna branch is electrically connected with the feed point.

Optionally, in the full-band antenna, the main radiating component further includes a first slot, and the first slot is located between the first antenna branch and the second antenna branch.

Optionally, in the full-band antenna, the main radiating component further includes a second slot, and the second slot is located between the first antenna branch and the third antenna branch.

Optionally, in the full-band antenna, a slot structure is further disposed between the third antenna branch and the fourth antenna branch, and the slot structure is matched with the conducting slot in shape.

Optionally, in the full-band antenna, a third slot is further provided on the fourth antenna branch, and the third slot is connected with the slot structure.

Optionally, in the full-band antenna, the parasitic coupling element further includes a fifth antenna branch and a sixth antenna branch; the fifth antenna branch is connected with the sixth antenna branch; the fifth antenna branch is electrically connected with the second grounding point; the sixth antenna branch is electrically connected with the second grounding point.

Optionally, in the full-band antenna, the fifth antenna branch is adjacent to the fourth antenna branch and a gap is left in the middle of the fifth antenna branch.

Optionally, in the full-band antenna, the matching circuit further includes at least 2 impedance matching elements and a switch; the switch is electrically connected with the impedance matching element.

Optionally, in the full-band antenna, the impedance matching element is a resistor, a capacitor or an inductor.

Optionally, in the full-band antenna, the switch is a normal switch or a single-pole multi-throw switch.

The beneficial effects of the utility model are as follows:

Drawings

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

Fig. 1 is a block diagram of a full-band antenna according to the present embodiment;

fig. 2 is a partial enlarged view of a full-band antenna substrate conductive slot according to the present embodiment;

fig. 3 is an original S-parameter simulation diagram of a full-band antenna according to the present embodiment;

fig. 4 is an S-parameter simulation diagram of the full-band antenna according to the present embodiment when 12nH is matched;

fig. 5 is an S-parameter simulation diagram of the full-band antenna according to the present embodiment when matching with 5.1 nH;

wherein, each reference sign is explained as follows:

1-a primary radiation assembly; a 2-parasitic coupling element; 3-a substrate; 4-a first ground point; 5-feeding points; 6-a second ground point; 11-a first antenna branch; 12-a second antenna branch; 13-third antenna branches; 14-fourth antenna branches; 15-a first gap; 16-a second gap; 17-a third gap; 18-slot structure; 21-fifth antenna branch; 22-sixth antenna branch; 31-conducting grooves.

Detailed Description

The full-band antenna and the terminal provided by the utility model are further described in detail below with reference to the accompanying drawings, tables and specific embodiments. It is noted that "first", "second", etc. in the description and claims of the present utility model and the accompanying drawings are used to distinguish similar objects so as to describe embodiments of the present utility model, and not to describe a specific order or sequence, it should be understood that the structures so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the prior art, when the antenna wire is designed, if the antenna wire collides with the positions of other components in the terminal, an avoidance design is often adopted, for example, the position of the antenna wire, which bypasses the components, is adopted, or the antenna wire is directly cut off to form two mutually independent antenna wires. Such a design tends to have the following problems:

1. the antenna wiring occupies more space;

2. the antenna wiring is designed in an evasion way, so that the radiation efficiency of the antenna is affected.

The utility model provides a full-band antenna, which comprises a main radiation component, a parasitic coupling component, a substrate, a feed point, a first grounding point, a second grounding point and a matching circuit; a conducting groove is formed in the substrate; the matching circuit is used for tuning the antenna under different conditions, so that better radiation characteristics can be realized. In the assembly process, the USB socket or other terminal interfaces can be through the inside of the whole antenna, and the advantage is that the USB socket or other terminal interfaces and the full-band antenna share the space inside the terminal, so that the antenna can achieve good radiation effect on the premise that the antenna does not occupy more terminal internal space independently.

Referring to fig. 1, fig. 1 is a block diagram of a full-band antenna according to the present embodiment, and the present utility model provides a full-band antenna, including a main radiating element 1, a parasitic coupling element 2, a substrate 3, a feeding point 5, a first grounding point 4, a second grounding point 6, and a matching circuit (not shown in the figure); the feed point 5 is electrically connected with the main radiation component 1; the first grounding point 4 is electrically connected with the main radiation component 1; the second grounding point 6 is electrically connected with the parasitic coupling component 2; the matching circuit is electrically connected with the feed point 5; the substrate is provided with a conducting groove 6.

The radiation assembly 1 further comprises a first antenna branch 11, a second antenna branch 12, a third antenna branch 13 and a fourth antenna branch 14; the first antenna branch 11 is connected with the second antenna branch 12; the second antenna branch 12 is connected with the third antenna branch 13; the third antenna branch 13 is connected to the fourth antenna branch 14; the third antenna branch 13 is electrically connected with the first grounding point 4; the fourth antenna branch 14 is electrically connected with the feeding point 5; the main radiating assembly further comprises a first slot 15 and a second slot 16, the first slot 15 being located between the first antenna branch 11 and the second antenna branch 12, the second slot 16 being located between the first antenna branch 11 and the third antenna branch 13; the first slot 15 is used for adjusting the bandwidth of the full-band antenna high-frequency resonance, and the second slot 16 is used for adjusting the bandwidth of the full-band antenna intermediate-frequency resonance.

Further, still be equipped with slot structure 18 between third antenna branch 13 with fourth antenna branch 14, slot structure 18 with switch on groove shape phase-match, so, USB socket or other terminal interface in the terminal just can walk the line through antenna system's base plate and antenna, in antenna assembly process, USB socket or other terminal interface can be through the inside of whole antenna, USB socket or other terminal interface and the inside space of full frequency channel antenna sharing terminal, can realize realizing the good radiating effect of antenna under the prerequisite that the antenna does not occupy more terminal inner space alone. The fourth antenna branch 14 is further provided with a third slot 17, the third slot 17 is connected with the slot structure 18, and the third slot 17 is used for adjusting the bandwidth of the low-frequency resonance of the full-band antenna.

It should be noted that the dimensions of the slot structures are not limited herein, and it is well known to those skilled in the art that, due to the difference of the resonant frequency bands of the antenna and the bandwidths of the frequency bands, the lengths and widths required by the slot structures are different, and the specific method for adjusting the dimensions of the slot structures is well known to those skilled in the art and will not be repeated herein.

In this embodiment, the parasitic coupling element 2 further includes a fifth antenna branch 21 and a sixth antenna branch 22; the fifth antenna branch 21 is connected to the sixth antenna branch 22; the fifth antenna branch 21 is electrically connected to the second ground point 6; the sixth antenna branch 22 is electrically connected to the second ground point 6. Importantly, the fifth antenna branch 21 is adjacent to the fourth antenna branch 14 and has a gap in the middle, and the fifth antenna branch 21 is used as a parasitic coupling branch of the fourth antenna branch 14 to improve the radiation characteristic of the full-band antenna at the low-frequency resonance position, so that the radiation efficiency and the radiation bandwidth of the low-frequency in the full-band antenna can be further enhanced.

The matching circuit further comprises at least 2 impedance matching elements and a switch; the impedance matching element can be a resistor, a capacitor or an inductor; the switch is a common switch or a single-pole multi-throw switch; when the switch is a common switch, the switch and the impedance matching element are connected in series respectively; when the switch is a single-pole multi-throw switch, the output ports of the switch are respectively connected with the impedance matching element in series. By matching the impedance matching element between the feed point 5 and the switch, the equivalent path of the antenna to ground can be adjusted, thereby further adjusting the radiation characteristics of the low frequency resonance in the full band antenna.

In this embodiment, the switch is configured as a single pole double throw switch and the impedance matching element is configured as an inductance of 12nH and 5.1 nH.

Referring to fig. 3 and fig. 4 in combination, fig. 3 is an original S-parameter simulation diagram of a full-band antenna provided by the present embodiment, fig. 4 is an S-parameter simulation diagram of the full-band antenna provided by the present embodiment when the full-band antenna is matched with 12nH, and it can be seen from comparison between fig. 3 and fig. 4 that when the switch is moved to the 12nH inductor, the radiation efficiency of high frequency in the full-band antenna is obviously improved, and in the actual debugging process, when the requirement of the antenna on the medium-high frequency band is high, the switch can be moved to the 12nH inductor to improve the use experience of the antenna.

Further, please continue to refer to fig. 3 and fig. 5 in combination, fig. 5 is an S parameter simulation diagram of the full-band antenna provided in this embodiment when matching with 5.1nH, and it can be seen from comparing fig. 3 and fig. 5 that when the switch is moved to the 5.1nH inductor, the high-frequency radiation efficiency of the full-band antenna is obviously improved, and in the actual debugging process, when the requirement of the antenna on the high-frequency band is high, the switch can be moved to the 5.1nH inductor to improve the use experience of the antenna.

It should be noted that, the above embodiment is only described in the preferred embodiment of the impedance matching element, in the actual debugging process, the impedance matching element may also be a resistor or a capacitor or an inductance element with different inductance values, and the electrical connection mode between the switch and the impedance matching element may be series connection or parallel connection, so that those skilled in the art may select and debug according to the actual requirement of the full-band antenna, and the specific debugging mode is well known to those skilled in the art and will not be repeated herein.

In summary, the present utility model provides a full-band antenna, including a main radiating element, a parasitic coupling element, a substrate, a feeding point, a first grounding point, a second grounding point, and a matching circuit; the feed point is electrically connected with the main radiation component; the first grounding point is electrically connected with the main radiation component; the second grounding point is electrically connected with the parasitic coupling component; the matching circuit is electrically connected with the feed point; a conducting groove is formed in the substrate; the matching circuit is used for tuning the antenna under different conditions, so that better radiation characteristics can be realized. In the assembly process, the USB socket can be through the inside of whole antenna, and the benefit that obtains is that USB socket and full frequency channel antenna share terminal inside space, can realize realizing the good radiating effect of antenna under the prerequisite that the antenna does not occupy more terminal inside space alone.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. The full-band antenna is characterized by comprising a main radiation component, a parasitic coupling component, a substrate, a feed point, a first grounding point, a second grounding point and a matching circuit; the feed point is electrically connected with the main radiation component; the first grounding point is electrically connected with the main radiation component; the second grounding point is electrically connected with the parasitic coupling component; the matching circuit is electrically connected with the feed point; the substrate is provided with a conducting groove, and the main radiation component is provided with a slot structure matched with the conducting groove.

2. The full band antenna of claim 1, wherein the main radiating element further comprises a first antenna branch, a second antenna branch, a third antenna branch, and a fourth antenna branch; the first antenna branch is connected with the second antenna branch; the second antenna branch is connected with the third antenna branch; the third antenna branch is connected with the fourth antenna branch; the third antenna branch is electrically connected with the first grounding point; the fourth antenna branch is electrically connected with the feed point.

3. A full band antenna according to claim 2, wherein the slot structure is located between the third antenna branch and the fourth antenna branch.

4. The full band antenna of claim 2, wherein the main radiating element further comprises a first slot and a second slot; the first gap is located between the first antenna branch and the second antenna branch, and the second gap is located between the first antenna branch and the third antenna branch.

5. The full band antenna of claim 4, wherein a third slot is further provided in the fourth antenna branch, and the third slot is connected to the slot structure.

6. The full band antenna of claim 2, wherein the parasitic coupling element further comprises a fifth antenna branch and a sixth antenna branch; the fifth antenna branch is connected with the sixth antenna branch; the fifth antenna branch is electrically connected with the second grounding point; the sixth antenna branch is electrically connected with the second grounding point.

7. The full band antenna of claim 6, wherein the fifth antenna branch is adjacent to the fourth antenna branch with a gap therebetween.

8. The full band antenna of claim 1, wherein the matching circuit further comprises at least 2 impedance matching elements and a switch; the switch is electrically connected with the impedance matching element.

9. The full band antenna of claim 8, wherein the impedance matching element is a resistor, a capacitor, or an inductor.

10. The full band antenna of claim 8, wherein the switch is a normal on-off switch or a single pole multiple throw switch.