Broadband antenna

Abstract

The utility model relates to a broadband antenna, which comprises a feeding point, an intermediate frequency coupling slot and four radiation parts, and is characterized in that the first radiation part comprises a first extension support arm extending from the feeding point to a first direction; the second radiation part is arranged on one side of the first direction of the feeding point; the third radiation part comprises a second extension support arm which is formed by extending from the feeding point to a second direction; the fourth radiation part is arranged on one side of the second direction of the feeding point; the intermediate-frequency coupling groove is arranged between the feeding point and the ground feeding point, and the intermediate-frequency coupling groove is a LOOP-shaped groove. Aiming at the situation that the environment is poor and an intermediate-frequency oscillator cannot be independently formed, an intermediate-frequency coupling groove is formed between a feeding point and a ground feeding point, and low-frequency secondary frequency multiplication resonance is generated by utilizing long-distance loop to serve as an intermediate-frequency radiation oscillator, so that the effect of broadening the frequency bandwidth at low frequency and intermediate frequency is achieved. Compared with the original technical scheme, the broadband antenna satisfies the performance debugging of the middle frequency band through matched debugging and antenna coupling characteristics, so that the cost is reduced, and the use scene of the antenna is expanded.

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 of mobile communication technology and the fifth generation of 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, it is impossible to provide more space to set up multiple antenna structures. In particular, many existing antennas are used in water drop screen mobile phones, which require differential mold injection in a clear environment. For such equipment, if an antenna switch is not used, it is difficult to achieve coverage of the required frequency band, or there are problems of high cost and unfavorable promotion. Utility Model Content

[0003] Based on this, it is necessary to provide a broadband antenna to address the problems of poor frequency coverage and high cost of existing antennas.

[0004] The utility model 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 extending arm extending from the feeding point to the first direction; a second radiating portion, wherein the second radiating portion is connected to the feeding point and is arranged on one side of the first direction of the feeding point; a third radiating portion, wherein the third radiating portion is connected to the feeding point and comprises a second extending arm extending from the feeding point to the second direction to generate a second extending arm; a fourth radiating portion, wherein the fourth radiating portion is connected to the feeding point and is arranged on one side of the second direction of the feeding point; and an intermediate frequency coupling slot, wherein the intermediate frequency coupling slot is arranged between the feeding point and the feeding point, and the intermediate frequency coupling slot is a LOOP-shaped slot.

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

[0006] Furthermore, the first feeding point is a high-frequency parasitic unit, and the high-frequency parasitic unit generates a frequency band ranging from 2500 MHz to 2690 MHz.

[0007] Furthermore, the second feeding point is arranged on a third extending arm extending outwardly from the broadband antenna.

[0008] Furthermore, a rectangular notch recessed toward the inside of the broadband antenna is provided between the second feeding point and the feeding point.

[0009] Furthermore, the broadband antenna also includes a low-frequency coupling slot, and the low-frequency coupling slot is opened between the first radiating portion and the fourth radiating portion.

[0010] Further, the first radiating portion can generate an operating frequency band with a frequency range between 791 MHz and 960 MHz. The second radiating portion can generate an operating frequency band with a frequency range between 2300 MHz and 2690 MHz. The third radiating portion can generate an operating frequency band with a frequency range between 1710 MHz and 2170 MHz and between 2300 MHz and 2690 MHz. The fourth radiating portion can generate an operating frequency band with a frequency range between 1710 MHz and 2170 MHz.

[0011] The broadband antenna proposed by the utility model is based on the arrangement of four radiators of different frequency bands. In view of the poor use environment and the inability to form a single intermediate frequency array, an intermediate frequency coupling slot is opened between the feeding point and the feeding point, and a long-distance loop is used to generate a low-frequency secondary frequency resonance as an intermediate frequency radiating array, so as to achieve the effect of widening the frequency bandwidth by low frequency and intermediate frequency. Compared with the original technical solution, this broadband antenna meets the intermediate frequency band performance debugging through matching debugging and antenna coupling characteristics, reduces costs, and expands the use scenarios of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic 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. Feeding point; 2. First radiating part; 3. Second radiating part; 4. Third radiating part; 5. Fourth radiating part; 6. Intermediate frequency coupling slot; 7. First feeding point; 8. Second feeding point; 9. 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 Figure 1 As shown, a broadband antenna comprises a feeding point 1, wherein the feeding point 1 is defined with a first direction and a second direction opposite to the first direction; a first radiating portion 2, wherein the first radiating portion 2 is connected to the feeding point 1 and comprises a first extension arm extending from the feeding point 1 to the first direction; a second radiating portion 3, wherein the second radiating portion 3 is connected to the feeding point 1 and is arranged on one side of the first direction of the feeding point 1; a third radiating portion 4, wherein the third radiating portion 4 is connected to the feeding point 1 and comprises a second extension arm extending from the feeding point 1 to the second direction; a fourth radiating portion 5, wherein the fourth radiating portion 5 is connected to the feeding point 1 and is arranged on one side of the second direction of the feeding point 1; and an intermediate frequency coupling slot 6, wherein the intermediate frequency coupling slot 6 is arranged between the feeding point 1 and the feeding point, and the intermediate frequency coupling slot 6 is a LOOP-shaped slot.

[0019] In order to solve the problem of poor use environment and inability to form an intermediate frequency array independently, this broadband antenna opens an intermediate frequency coupling slot 6 between the feeding point 1 and the feeding point, and uses a long-distance loop to generate a low-frequency secondary frequency resonance as an intermediate frequency radiation array, so as to achieve the effect of widening the frequency bandwidth by using low and intermediate frequencies. Compared with the original technical solution, this broadband antenna meets the performance debugging of the intermediate frequency band through matching debugging and antenna coupling characteristics, reduces costs, and expands the use scenarios of the antenna.

[0020] Based on this embodiment, the feeding point includes a first feeding point 7 and a second feeding point 8, the second feeding point 8 is arranged on one side of the first feeding point 7 in the first direction, and the feeding point 1 is arranged on one side of the second direction of the first feeding point 7; the intermediate frequency coupling slot 6 is opened between the feeding point 1 and the second feeding point 8. Among them, the second feeding point 8 is arranged on the third extension arm extending outward from the broadband antenna.

[0021] On this basis, further, a rectangular notch recessed toward the inner side of the broadband antenna is opened between the second feeding point 8 and the feeding point 1 .

[0022] In this embodiment, the first feeding point 7 is a high frequency parasitic unit, which generates an operating frequency band ranging from 2500 MHz to 2690 MHz. An independent high frequency resonance is generated by the parasitic unit, and its length affects the high frequency deviation.

[0023] Based on this embodiment, the broadband antenna further includes a low-frequency coupling slot 9, which is opened between the first radiating portion 2 and the fourth radiating portion 5. The low-frequency coupling slot 9 controls the low-frequency bandwidth and length. The low-frequency broadband is generated by mutual coupling between the deep slot and the medium and high frequency radiators. If the slot length of this slot is increased, the low frequency will be lengthened.

[0024] In this embodiment, the first radiating portion 2 can generate an operating frequency band ranging from 791 MHz to 960 MHz. The second radiating portion 3 can generate an operating frequency band ranging from 2300 MHz to 2690 MHz. The third radiating portion 4 can generate an operating frequency band ranging from 1710 MHz to 2170 MHz and from 2300 MHz to 2690 MHz. The fourth radiating portion 5 can generate an operating frequency band ranging from 1710 MHz to 2170 MHz.

[0025] In another embodiment of the utility model: the feed point 1 is used as the excitation of the broadband antenna; the first radiating part 2 is used as the main radiator of the antenna, with a range of 791-960MHZ; the second radiating part 3 is used as a high-frequency radiating array, with a range of 2300-2690MHZ; the third radiating part 4 is used as a medium-high frequency radiating array, with a range of 1710-2170MHZ and 2300-2690MHZ, and the medium-high frequency bandwidth and length are coupled through this radiating array. The third radiating part 4 is used as a medium-frequency radiating array, with a range of 1710-2170MHZ, and the medium-high frequency bandwidth and length are coupled through this radiating array.

[0026] In this embodiment, the length of the gap of the intermediate frequency coupling slot 6 will affect the bandwidth of the intermediate frequency. This slot generates a low-frequency secondary frequency through the distance between the feeding point 1 and the second feeding point 8, thereby controlling the intermediate frequency bandwidth. The main principle is to open a deep slot between the feeding point 1 and the second feeding point 8 to generate a low-frequency secondary frequency resonance, and through the loop antenna form in a poor environment of the whole machine, the purpose of optimizing the intermediate frequency bandwidth is achieved.

[0027] In this embodiment, the low-frequency coupling slot 9 is a coupling slot between the power feed and the ground feed, which is used to control the low-frequency bandwidth and length. The deep slot and the mutual coupling between the fourth radiation part 5 and the first radiation part 2 of the medium and high frequency radiator generate a low-frequency broadband; and if the length of the slot is increased, the low frequency will be lengthened.

[0028] The utility model discloses a LOOP with a long-distance return to the ground and a parasitic unit. It mainly uses a long-distance ground loop to generate a low-frequency secondary frequency resonance as an intermediate frequency radiation array in a poor environment where a single intermediate frequency array cannot be used, so as to achieve the effect of widening the frequency bandwidth of low frequency and intermediate frequency. The broadband antenna basically meets the bandwidth requirements of mobile terminal antennas; the frequency bands that the antenna can cover are: 791-960mhz, 1710-2690mhz. It can be used for water drop frequency mobile phone antenna debugging, and the antenna switch can be omitted.

[0029] 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.

[0030] 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 from the feeding point in a first direction; A second radiating portion, the second radiating portion is connected to the feeding point and is arranged on one side of the feeding point in the first direction; A third radiating portion, the third radiating portion is connected to the feeding point and includes a second extending arm extending from the feeding point in a second direction; a fourth radiating portion, the fourth radiating portion being connected to the feeding point and being arranged on one side of the feeding point in the second direction; The intermediate frequency coupling slot is opened between the feeding point and the feeding ground point, and the intermediate frequency coupling slot is a LOOP-shaped groove.

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 second feeding point is arranged on one side of the first feeding point in a first direction, and the feeding point is arranged on one side of the second direction of the first feeding point; the intermediate frequency coupling slot is opened between the feeding point and the second feeding point.

3. The broadband antenna according to claim 2, characterized in that: The first feeding point is a high-frequency parasitic unit, and the high-frequency parasitic unit generates a frequency band ranging from 2500 MHz to 2690 MHz.

4. The broadband antenna according to claim 2, characterized in that: The second feeding point is arranged on a third extending arm extending outwardly from the broadband antenna.

5. The broadband antenna according to claim 2, characterized in that: A rectangular notch recessed toward the inside of the broadband antenna is provided between the second feeding point and the power feeding point.

6. The broadband antenna according to claim 1, characterized in that: It also includes a low-frequency coupling slot, which is opened between the first radiation part and the fourth radiation part.

7. The broadband antenna according to claim 1, characterized in that: The first radiating portion can generate an operating frequency band ranging from 791 MHz to 960 MHz.

8. The broadband antenna according to claim 1, characterized in that: The second radiating portion can generate an operating frequency band ranging from 2300 MHz to 2690 MHz.

9. The broadband antenna according to claim 1, characterized in that: The third radiation portion can generate an operating frequency band ranging from 1710 MHZ to 2170 MHZ and from 2300 MHZ to 2690 MHZ.

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

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