Broadband antenna

Abstract

The utility model relates to a broadband antenna, which comprises a feeding point, a ground feeding point, a first radiation part, a second radiation part and a low-frequency coupling groove, the first radiation part is connected with the feeding point and comprises a first extension support arm extending towards a first direction; the second radiation part is connected with the feeding point and comprises a second extension support arm extending from the feeding point to the direction of the first radiation part; the third radiation part is connected with the feeding point and comprises a third extension support arm which is formed by extending from the feeding point to the second direction; the low-frequency coupling groove is arranged between the feeding point and the ground feeding point. According to the broadband antenna provided by the utility model, on the basis that the three radiators with different frequency bands are arranged, the low-frequency coupling groove is formed between the feeding point and the ground feeding point, so that a very wide low-frequency bandwidth is generated, and the requirement of expanding the low-frequency bandwidth is further met. Full-band performance debugging is met through matched debugging and antenna coupling characteristics, and the cost is reduced for customers.

Description

Technical Field

[0001] The utility model relates to the technical field of communication equipment, in particular to a broadband antenna. Background Art

[0002] With the development of the fourth generation mobile communication technology and the fifth generation mobile communication technology, the operating frequency band of the existing antenna structure can no longer meet the demand for providing multiple different operating frequency bands at the same time. Generally speaking, in order to increase multiple different operating frequency bands, most of the existing technologies set up multiple antenna structures. However, in the case that existing products are designed towards miniaturization, there is no room to provide more space to set up multiple antenna structures. Therefore, how to meet the full-band performance debugging without adding antennas and reduce costs for customers is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0003] Based on this, it is necessary to provide a broadband antenna to address the problem that the frequency range covered by existing antennas is poor.

[0004] The present embodiment proposes a broadband antenna, comprising: a feeding point, wherein the feeding point is defined with a first direction and a second direction opposite to the first direction; a first radiating portion, wherein the first radiating portion is connected to the feeding point and comprises a first extension arm extending in the first direction; a second radiating portion, wherein the second radiating portion is connected to the feeding point and comprises a second extension arm extending from the feeding point in the direction of the first radiating portion; a third radiating portion, wherein the third radiating portion is connected to the feeding point and comprises a third extension arm extending from the feeding point in the second direction; and a low-frequency coupling slot, wherein the low-frequency coupling slot is arranged between the feeding point and the feeding point.

[0005] Furthermore, the feeding point includes a first feeding point and a second feeding point, the first feeding point is arranged on one side of the first direction of the feeding point, and the second feeding point is arranged on one side of the second direction of the feeding point; the low-frequency coupling slot is opened between the feeding point and the first feeding point.

[0006] Furthermore, the broadband antenna further includes a high-frequency coupling slot, and the high-frequency coupling slot is arranged between the second radiating portion and the first radiating portion, and between the second radiating portion and the first feeding point.

[0007] Furthermore, the second feeding point is an intermediate frequency parasitic unit.

[0008] Furthermore, a strip-shaped hollow hole is formed on the first radiating portion, a rectangular hollow hole is formed on the second radiating portion, and a rectangular notch is formed between the first radiating portion and the second radiating portion and is recessed toward the inside of the broadband antenna.

[0009] Further, the first radiating portion can generate an operating frequency band with a frequency range between 700 MHz and 960 MHz. The second radiating portion can generate an operating frequency band with a frequency range between 2500 MHz and 2690 MHz. The third radiating portion can generate an operating frequency band with a frequency range between 1710 MHz and 2170 MHz.

[0010] The broadband antenna provided by the utility model is based on the arrangement of three radiators of different frequency bands, and a low-frequency coupling slot is opened between the feeding point and the feeding point, so as to generate a very wide low-frequency bandwidth, thereby meeting the demand for expanding the low-frequency bandwidth. Compared with the original technical solution, this broadband antenna meets the full-band performance debugging through matching debugging and antenna coupling characteristics, reducing costs for customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of a broadband antenna of the utility model;

[0012] Figure 2 This is a standing wave return loss impedance diagram of an embodiment of a broadband antenna of the present utility model.

[0013] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0014] 1. First feeding point; 2. Feeding point; 3. Second feeding point; 4. First radiating part; 5. Second radiating part; 6. High-frequency coupling slot; 7. Third radiating part; 8. Low-frequency coupling slot. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the specific details described below are only part of the embodiments of the utility model, and the utility model can also be implemented in many other embodiments different from those described here. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0018] In one embodiment, see the attached Figure 1 And attached Figure 2 As shown, a broadband antenna comprises:

[0019] A feeding point 2, a first feeding point 1 and a second feeding point 3; the feeding point 2 is defined with a first direction and a second direction opposite to the first direction; the second feeding point 3 is an intermediate frequency parasitic unit, and the first feeding point 1 is arranged on one side of the first direction of the feeding point 2.

[0020] The first radiating portion 4 is connected to the feeding point 2 and includes a first extension arm extending in the first direction; a strip-shaped hollow hole is formed on the first radiating portion 4 and a rectangular hollow hole is formed on the second radiating portion 5. The first radiating portion 4 can generate an operating frequency band ranging from 700 MHz to 960 MHz.

[0021] The second radiating portion 5 is connected to the feeding point 2 and includes a second extension arm extending from the feeding point 2 toward the first radiating portion 4; a rectangular hollow hole is formed on the second radiating portion 5. A rectangular notch is formed between the first radiating portion 4 and the second radiating portion 5 and is recessed toward the inside of the broadband antenna. The second radiating portion 5 can generate an operating frequency band ranging from 2500MHz to 2690MHz.

[0022] The third radiating portion 7 is connected to the feeding point 2 and includes a third extending arm extending from the feeding point 2 toward the second direction; the third radiating portion 7 can generate an operating frequency band ranging from 1710 MHz to 2170 MHz.

[0023] The high-frequency coupling slot 6 is disposed between the second radiating portion and the first radiating portion, and between the second radiating portion and the first feeding point 1 .

[0024] The low-frequency coupling slot 8 is opened between the feeding point 2 and the first feeding point 1 .

[0025] The broadband antenna provided by the utility model is provided with three radiators of different frequency bands, and a low-frequency coupling slot 8 is provided between the feeding point 2 and the feeding point, so as to generate a very wide low-frequency bandwidth, thereby meeting the demand for expanding the low-frequency bandwidth. Compared with the original technical solution, the full-band performance debugging is met through matching debugging and antenna coupling characteristics, which reduces the cost for customers.

[0026] In another embodiment of the present invention, the broadband antenna includes:

[0027] First feed location 1;

[0028] Feed point 2, as the excitation signal input;

[0029] The second feeding point 3 is an intermediate frequency parasitic unit;

[0030] The first radiating part 4 is the main radiator of the antenna, and the frequency coverage range is 700MHZ-960MHZ;

[0031] The second radiation part 5 is a high-frequency radiation element of the antenna, and the frequency coverage range is: 2500MHZ-2690MHZ;

[0032] The high frequency coupling slot 6 generates low frequency double frequency plus coupling through the distance between the second radiating part 5 and the first radiating part 4 and the first feeding point 1, thereby controlling the high frequency bandwidth. The width of the coupling slot in this design will affect the bandwidth of the medium and high frequencies.

[0033] The third radiation part 7 is a medium-high frequency radiation array, and the frequency coverage range is 1710MHZ-2170MHZ. The medium-high frequency bandwidth and length are coupled through the third radiation part 7.

[0034] The low frequency coupling slot 8 can control the low frequency bandwidth and length.

[0035] This structure generates a low-frequency broadband through the mutual coupling between the deep slot and the medium and high frequency radiation array and the feed point 2. If the width of the slot is increased, the low-frequency bandwidth will become narrower, and it will also affect the performance of the medium frequency antenna. A deep slot is opened between the feed point 2 and the ground feed to generate a very wide low-frequency bandwidth, thereby achieving the purpose of expanding the low-frequency bandwidth.

[0036] The broadband antenna of this embodiment covers the frequencies of 700-960MHz & 1710-26900MHz. The core point of the antenna is that the antenna plus the feed and the ground feed have gaps to produce a very wide low-frequency bandwidth, thereby meeting the demand for expanding the low-frequency bandwidth. Compared with the existing technical solutions, without adding switches, the full-band performance debugging is met through matching debugging and antenna coupling characteristics, which reduces costs for customers. This broadband antenna makes full use of the particularity of the feed and the ground feed to open deep grooves to produce low-frequency broadband, so that it produces a very wide low-frequency bandwidth, thereby achieving the effect of improving the low-frequency bandwidth.

[0037] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications, substitutions and improvements can be made without departing from the concept of the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be based on the claims.

Claims

1. A broadband antenna, characterized in that: include: A feeding point, wherein the feeding point is defined with a first direction and a second direction opposite to the first direction; A first radiating portion, the first radiating portion is connected to the feeding point and comprises a first extending arm extending in a first direction; A second radiating portion, the second radiating portion is connected to the feeding point, and includes a second extending arm extending from the feeding point toward the first radiating portion; A third radiating portion, the third radiating portion is connected to the feeding point, and includes a third extending arm extending from the feeding point in a second direction; A low-frequency coupling slot is provided between the feeding point and the feeding ground point.

2. The broadband antenna according to claim 1, characterized in that: The feeding point includes a first feeding point and a second feeding point, the first feeding point is arranged on one side of the first direction of the feeding point, and the second feeding point is arranged on one side of the second direction of the feeding point; the low-frequency coupling slot is opened between the feeding point and the first feeding point.

3. The broadband antenna according to claim 2, characterized in that: It also includes a high-frequency coupling slot, which is arranged between the second radiating portion and the first radiating portion and between the second radiating portion and the first feeding point.

4. The broadband antenna according to claim 2, characterized in that: The second feeding point is an intermediate frequency parasitic unit.

5. The broadband antenna according to claim 1, characterized in that: The first radiation portion is provided with a strip-shaped hollow hole.

6. The broadband antenna according to claim 1, characterized in that: The second radiation portion has a rectangular hollow hole.

7. The broadband antenna according to claim 1, characterized in that: A rectangular notch recessed toward the inside of the broadband antenna is formed between the first radiating portion and the second radiating portion.

8. The broadband antenna according to claim 1, characterized in that: The first radiating portion can generate an operating frequency band ranging from 700 MHz to 960 MHz.

9. The broadband antenna according to claim 1, characterized in that: The second radiating portion can generate an operating frequency band ranging from 2500 MHz to 2690 MHz.

10. The broadband antenna according to claim 1, characterized in that: The third radiating portion can generate an operating frequency band ranging from 1710 MHz to 2170 MHz.

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