CN215816427U

CN215816427U - Multi-band antenna

Info

Publication number: CN215816427U
Application number: CN202121306606.XU
Authority: CN
Inventors: 樊超; 张乐; 蒋顺吉; 黄俊骁
Original assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile IoT Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-02-11
Anticipated expiration: 2031-06-09

Abstract

The embodiment of the application discloses a multiband antenna, including: the antenna comprises a dielectric plate, a radiator, a ground plate, at least two gaps and a plurality of feed points; wherein: the radiator is arranged on the front surface of the dielectric plate, and the back surface of the dielectric plate is connected with the grounding plate; the radiator is communicated with the grounding plate through the plurality of feeding points; the at least two gaps are arranged on the radiating body, and each of the at least two gaps forms a resonance point corresponding to a communication frequency band; the plurality of feeding points are arranged on the dielectric plate, and every two feeding points in the plurality of feeding points form a resonance point corresponding to a communication frequency band; the widths of the at least two slots and/or the positions of the plurality of feed points are adjustable.

Description

Multi-band antenna

Technical Field

The embodiment of the application relates to but is not limited to thing networking communication technology field, especially relates to a multiband antenna.

Background

Communication technologies generally need to cover various communication frequency bands, however, antennas in related technologies are not compatible with NB-IOT and other signals such as WIFI signals;

some multiband antennas are relatively complex to manufacture and are not suitable for mass production.

SUMMERY OF THE UTILITY MODEL

The embodiment of the present application provides a multiband antenna, including: the antenna comprises a dielectric plate, a radiator, a ground plate, at least two gaps and a plurality of feed points; wherein:

the radiator is arranged on the front surface of the dielectric plate, and the back surface of the dielectric plate is connected with the grounding plate; the radiator is communicated with the grounding plate through the plurality of feeding points;

the at least two gaps are arranged on the radiating body, and each of the at least two gaps forms a resonance point corresponding to a communication frequency band;

the plurality of feeding points are arranged on the dielectric plate, and every two feeding points in the plurality of feeding points form a resonance point corresponding to a communication frequency band;

the widths of the at least two slots and/or the positions of the plurality of feed points are adjustable.

In the embodiment of the application, the antenna can work on a plurality of communication frequency bands simultaneously by adopting at least two gaps and using a new feeding mode; by adjusting the width of at least two gaps and/or the positions of a plurality of feed points, the communication frequency band of the multi-band antenna can be adjusted, and the multi-band antenna has extremely strong applicability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram of a multiband antenna provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of another multiband antenna provided in the embodiment of the present application;

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

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

Detailed Description

The following describes in detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems by embodiments and with reference to the drawings. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

It should be noted that: in the present examples, "first", "second", etc. are used for distinguishing similar objects and are not necessarily used for describing a particular order or sequence.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

Fig. 1 is a schematic structural diagram of a multiband antenna provided in an embodiment of the present application, and referring to fig. 1, the multiband antenna includes: the antenna comprises a dielectric plate 11, a radiator 12, a ground plate 13, at least two slots 14 and a plurality of feed points 15; wherein:

the radiator 12 is arranged on the front surface of the dielectric plate 11, and the back surface of the dielectric plate 11 is connected with the ground plate 13; the radiator 12 is communicated with the ground plate 13 through the plurality of feeding points 15;

it should be noted that the front surface of the dielectric plate 11 may be fabricated by a photolithography process to form a metal thin layer having a specific shape as the radiator 12, and the shape of the radiator 12 may be variously changed according to requirements.

The at least two slots 14 are disposed on the radiator 12, and each slot 14 of the at least two slots 14 forms a resonance point corresponding to a communication frequency band;

the plurality of feeding points 15 are disposed on the dielectric plate 11, and each two feeding points 15 in the plurality of feeding points 15 form a resonance point corresponding to a communication frequency band;

the width of the at least two slots 14 and/or the position of the plurality of feeding points 15 is adjustable.

It should be noted that the communication frequency band may be adjusted according to the widths of the two slots and/or the positions of the multiple feeding points.

Referring to fig. 1, the operating principle of the multiband antenna may be: when the multi-band antenna receives signals, the feeding points can form at least two resonance points corresponding to a communication frequency band respectively, and the at least two gaps can form resonance points corresponding to a communication frequency band respectively, so that at least four communication frequency bands corresponding to at least four resonance points can be realized.

In the embodiment of the application, at least two gaps are adopted, and a new feeding mode is adopted, so that the simultaneous working on a plurality of communication frequency bands is realized; the communication frequency band can be adjusted by adjusting the width of the gap and/or the position of the feed point, and the method has extremely strong applicability.

In one embodiment, the radiator 12 is a metal patch.

The metal patch may be made of gold or copper.

In one embodiment, the radiator is circular.

It should be noted that the shape of the metal patch may also be rectangular, triangular, etc.

Fig. 2 is a schematic diagram of a structure of another multiband antenna provided in an embodiment of the present application, and referring to fig. 2, the at least two slots 14 include a first slot 21 and a second slot 22; the opening direction of the first slit 21 faces the second slit 22; the opening direction of the second slit 22 faces the first slit 21.

In one embodiment, referring to fig. 2, the at least two slits 14 may be both arc-shaped; the inner sides of the at least two slits are opposite.

It should be noted that, when the slit is in the shape of an arc, the inner side of the slit is the side where the center of the arc slit is located; the at least two slits may have different shapes, and the at least two slits may also have a rectangular shape or a circular shape.

In one embodiment, the inner diameter of the first slit 21 is larger than the inner diameter of the second slit 22.

Referring to fig. 2, it is assumed that the inner diameter of the first slit 21 is R₁The inner diameter of the second slit 22 is R₂Then R is₁Greater than R₂。

In one embodiment, the second slit 22 is located partially inside the first slit 21.

Referring to fig. 2, the second slit 22 is located inside the arc of the first slit 21.

In one embodiment, the plurality of feed points comprises four feed points;

two of the four feeding points are arranged on one diagonal of the dielectric plate, and the other two of the four feeding points are arranged on the other diagonal of the dielectric plate;

two feed points arranged on the same diagonal line of the dielectric plate are centrosymmetric about the center of the dielectric plate.

Fig. 3 is a schematic diagram of a structure of a multiband antenna provided in an embodiment of the present application, and referring to fig. 3, the feeding points include a feeding point 31, a feeding point 32, a feeding point 33, and a feeding point 34; the feeding point 31 and the feeding point 34 are arranged on one diagonal line 36 of the dielectric plate 35, and the feeding point 32 and the feeding point 33 are arranged on the other diagonal line 37 of the dielectric plate 35; the feeding point 31 and the feeding point 34 are centrosymmetric with respect to the center 38 of the dielectric plate 35; the

feeding points

32 and 33 are centrosymmetric with respect to the center 38 of the dielectric plate 35.

In one embodiment, the width of the first slit is 0.7 mm; the width of the second gap is 0.23 mm; the distance between the feed point and the center of the dielectric plate is a preset distance;

the communication frequency band comprises an NB-IOT frequency band, a 2.4 GWIFII frequency band, a 5 GWIFII frequency band and a WiMAX (World Interoperability for Microwave Access) frequency band.

The preset distance includes a first preset distance and a second preset distance, referring to fig. 3, the width W of the first slot 39 and the width H of the second slot 40 may be adjusted, or the distance between the feeding point 31 and the center 38 of the dielectric plate and the distance between the feeding point 32 and the center 38 of the dielectric plate may be adjusted; when the width W of the first slot 39 is 0.7mm (millimeter), the width H of the second slot 40 is 0.23mm, the distance between the

feed point

31 or 34 and the center 38 of the dielectric plate is a first preset distance, and the distance between the

feed point

33 or 33 and the center 38 of the dielectric plate is a second preset distance, each resonance frequency point (also called resonance point) of the multiband antenna is exactly located at the alleged frequency point, and exactly corresponds to four frequency bands of NB-IOT, 2.4 gwifii, 5GWIFI and WiMAX.

In the embodiment of the application, two gaps are adopted, and a new feeding mode is adopted, so that the four communication frequency bands can work simultaneously. By adjusting the width of the gap and the distance between the feed point and the center of the dielectric slab, the antenna can be simultaneously applied to four communication frequency bands of NB-IOT, 2.4 GWIFII, 5 GWIFII and WiMAX, and has extremely strong applicability.

In one embodiment, the at least two slits are symmetrically arranged; the inner diameters of the at least two gaps are sequentially increased from inside to outside.

Fig. 4 is a schematic structural diagram of another multiband antenna provided in an embodiment of the present application, and referring to fig. 4, the at least two slots include four slots, the

slots

41 and 42 are symmetrically arranged, and the

slots

43 and 44 are symmetrically arranged.

The inner diameter of the slit 41 is larger than that of the slit 42; the inner diameter of the slit 43 is larger than that of the slit 44;

the inner diameter of the slit 41 is larger than that of the slit 43; the inner diameter of the slit 42 is larger than the inner diameter of the slit 44.

The narrowband Internet of Things (NB-IoT) becomes an important branch of the world-wide Internet. NB-IoT is constructed in a cellular network, consumes only about 180KHz (kilohertz) bandwidth, and can be directly deployed in a GSM (Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System), or LTE (Long Term Evolution) network, so as to reduce the deployment cost and achieve smooth upgrade. NB-IoT is an emerging technology in the IoT field, supports cellular data connectivity of Low-Power devices over Wide Area networks, and is also called Low-Power Wide-Area Network (LPWAN). NB-IoT supports efficient connectivity for devices with long standby time and high requirements for network connectivity. NB-IoT device battery life can be improved by at least 10 years while still providing very comprehensive indoor cellular data connection coverage.

In a related art, a 5G (5th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology) narrowband internet of things, GSM and LTE multiband antenna is disclosed, which not only can satisfy the requirement of light and thin, but also the coupling piece of the multiband antenna can improve the convenience of welding and assembling, and can form broadband high performance.

In another related technology, a multi-band NB-IOT wireless communication module with ultra-high sensitivity is disclosed, which relates to the technical field of wireless communication and aims to solve the problem that the information transmission efficiency of wireless communication in multi-band information processing is reduced to affect the working efficiency.

Aiming at the defects and the improvement requirements of the related technology, the application provides the multiband antenna for the NB-IOT, and the multiband antenna can work on four frequency bands simultaneously by adopting two gap structures and using a new feeding mode. By adjusting the size of the gap structure in the application, the application can be simultaneously applied to NB-IOT, 2.4 GWIFIDI, 5 GWIFIDI and WiMAX, and has extremely strong applicability.

The multi-band antenna comprises a first slot, a second slot, a dielectric plate, a radiation patch and a plurality of feed points; the radiation patch can be a circular metal patch, the metal patch is arranged on the front surface of the dielectric plate and is communicated with the back surface of the dielectric plate through a feed point, and the back surface of the dielectric plate is a grounding plate.

The width of the first gap can be represented as W and is in a circular arc shape, and the opening direction faces the second gap; the width of the second slit may be indicated as H, and may also be in the shape of a circular arc, with the opening facing the first slit.

The inner diameter of the first slit is larger than the second slit and the circular arc shape of the second slit is actually located inside the circular arc shape of the first slit.

The number of the feeding points can be four, the feeding points are arranged on the dielectric plate, two feeding points can be arranged on one diagonal line of the dielectric plate, and the other two feeding points can be arranged on the other diagonal line of the dielectric plate, namely, the four feeding points are arranged diagonally to form diagonal feeding.

The working principle of the multiband antenna can be as follows:

when signal reception is carried out, four feed points can form two resonance points, and first gap and second gap form a resonance point respectively, so this application can realize four kinds of communication frequency channels of four resonance point correspondences.

By adjusting the value of the width W of the first slot and the value of the width H of the second slot, the communication band of the antenna can be adjusted, for example:

the simulation debugging can be carried out by adopting the mode that W and H values are the same, when W is 0.7mm (millimeter), H is 0.23mm, and the distance between the feed point and the center of the dielectric slab is a preset distance, each resonance frequency point of the antenna is exactly positioned at the alleged frequency point and exactly corresponds to four frequency bands of NB-IOT, 2.4 GWIFIDI, 5 GWIDI and WiMAX.

By adopting two gap structures and using a new feeding mode, the four-frequency-band synchronous feed circuit can work on four frequency bands simultaneously. By adjusting the size of the gap structure, the method can be simultaneously applied to NB-IOT, 2.4 GWIFII, 5 GWIFII and WiMAX communication frequency bands, and has extremely strong applicability.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment of the present application" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" or "embodiments of the present application" or "the preceding embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

In the description of the present application, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the several embodiments provided in the present application, it should be understood that the disclosed multiband antenna can be implemented in other ways. The above-described embodiments are merely illustrative, for example, the division of the components (which may be understood as units) of the multiband antenna is only a logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

The term "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. It should be noted that the drawings in the embodiments of the present application are only for illustrating the schematic positions of the components on the multiband antenna, and do not represent the actual positions in the multiband antenna, the actual positions of the components or the regions may be changed or shifted according to the actual situation (for example, the structure of the multiband antenna), and the proportions of the different components in the multiband antenna in the drawings do not represent the actual proportions.

The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A multiband antenna, comprising: the antenna comprises a dielectric plate, a radiator, a ground plate, at least two gaps and a plurality of feed points; wherein:

2. The multiple band-type antenna of claim 1, wherein said radiator is a metal patch.

3. The multiband antenna of claim 1, wherein the at least two slots are each arc shaped; the inner sides of the at least two slits are opposite.

4. The multiband antenna of claim 3, wherein the at least two slots are symmetrically arranged; the inner diameters of the at least two gaps are sequentially increased from inside to outside.

5. The multiband antenna of claim 3, wherein the at least two slots comprise a first slot and a second slot; the opening direction of the first gap faces the second gap; the opening direction of the second slit faces the first slit.

6. The multiband antenna of claim 5, wherein an inner diameter of the first slot is larger than an inner diameter of the second slot.

7. The multiband antenna of claim 5, wherein the second slot portion is located inside the first slot.

8. The multiband antenna of claim 5, wherein the plurality of feed points comprises four feed points;

9. The multiband antenna of claim 8, wherein the first slot has a width of 0.7 millimeters; the width of the second gap is 0.23 mm; the distance between the feed point and the center of the dielectric plate is a preset distance;

the communication frequency bands comprise an NB-IOT frequency band, a 2.4 GWIFII frequency band, a 5 GWIFII frequency band and a WiMAX frequency band for worldwide interoperability for microwave access.

10. The multiband antenna of any one of claims 1 to 9, wherein the radiator is circular.