CN201134508Y - Dual-frequency antenna - Google Patents

Abstract

The utility model discloses a dual-frequency antenna, comprising a first radiating conductor and a second radiating conductor. The first radiating conductor is used for transmitting and receiving high-frequency signals, and comprises a first part and a second part, wherein the first part is bent and coupled to the second part, and the first part is approximately perpendicular to the second part and forms an approximately L-shaped structure with the second part. The second radiating conductor is used for transmitting and receiving low-frequency signals, and comprises a third part and a fourth part, wherein the third part is bent and coupled to the fourth part, and the third part is approximately perpendicular to the fourth part and forms another approximately L-shaped structure with the fourth part, and the fourth part is approximately perpendicularly coupled to the first part of the first radiating conductor.

Description

dual frequency antenna

technical field

The utility model relates to a dual-frequency antenna, in particular to a dual-frequency antenna with a broadband function.

Background technique

With the advancement of technology, people have higher and higher requirements for wireless communication. Various mobile electronic devices have also changed in appearance and size in order to meet the requirements of portability and small size. Therefore, antennas used for transmitting and receiving signals in mobile electronic devices must also have different designs.

FIG. 1 is a schematic diagram of an F-type dual-band antenna in the prior art. The F-shaped dual-band antenna 100 includes a signal feed-in terminal 102 , a ground terminal 104 , a long radiating metal conductor 106 and a short radiating metal conductor 108 . The signal feed-in terminal 102 is used to receive a fed-in signal, the long radiating metal conductor 106 is used to send and receive a low frequency signal, and the short radiating metal conductor 108 is used to send and receive a high frequency signal. Wherein, one end of the long radiating metal conductor 106 and one end of the short radiating metal conductor 108 are coupled to each other.

For the F-type dual-frequency antenna 100, the length of the long radiating metal conductor 106 and the length of the short radiating metal conductor 108 are both required to satisfy a quarter of the corresponding wavelength of the transmitted signal, so the F-type dual-frequency antenna 100 The space that the radio frequency antenna 100 must occupy is too large, which is not suitable for the antenna volume design requirements of today's mobile electronic devices. Furthermore, the F-type dual-band antenna 100 does not have any broadband characteristics, so when sending and receiving signals, the F-type dual-band antenna 100 cannot simultaneously accommodate signals of multiple frequency bands, and cannot enable current mobile electronic devices to have multi-band or broadband capabilities. Function.

Utility model content

The technical problem to be solved by the utility model is to provide a dual-frequency antenna, so as to provide the largest effective space of the antenna and increase the bandwidth of the antenna to achieve a better receiving effect.

In order to achieve the above purpose, according to an embodiment of the present invention, the present invention proposes a dual-band antenna. The dual-band antenna includes a first radiation conductor and a second radiation conductor. The first radiating conductor is used to send and receive a high-frequency signal, and includes a first part and a second part, wherein the first part is bent and coupled with the second part, and the first part is approximately It is perpendicular to the second part and forms an approximately L-shaped structure with the second part. The second radiating conductor is used to send and receive a low-frequency signal, and includes a third part and a fourth part, wherein the third part is bent and coupled with the fourth part, and the third part is approximately vertical Another approximately L-shaped structure is formed with the fourth portion, and the fourth portion is approximately vertically coupled to the first portion of the first radiation conductor.

Moreover, in order to achieve the above purpose, according to another embodiment of the present invention, the present invention provides a dual-band antenna. The dual-frequency antenna includes a grounding part, a feeding part, a high-frequency radiation conductor and a low-frequency radiation conductor. The feed-in part is used for receiving a feed-in signal. The high-frequency radiation conductor includes a first part and a second part, wherein one end of the first part is coupled to the second part to form an approximate L-shaped structure with the second part, and the first part The other end is coupled to the grounding part and the feeding part, and the first part is bent. The low-frequency radiation conductor includes a third part and a fourth part, wherein the fourth part has one end coupled to the third part and forms another approximately L-shaped structure with the third part, and the fourth part The other end is coupled to one side of the first part of the high-frequency radiation conductor and is approximately perpendicular to the first part of the high-frequency radiation conductor, and the third part is bent.

According to the technical content of the present invention, the volume occupied by the above-mentioned dual-band antenna can be reduced to facilitate placement in mobile electronic devices with limited space, and it has more broadband characteristics and can accommodate signals of more frequency bands. To achieve a better receiving effect.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

FIG. 1 shows a schematic diagram of an F-type dual-band antenna in the prior art;

2 to 4 are perspective views of a dual-band antenna according to an embodiment of the present invention.

Among them, reference signs:

100: F-type dual-frequency antenna 102: Signal feed-in terminal

104: Ground terminal 106: Long radiating metal conductor

108: short radiating metal conductor 200: dual frequency antenna

202: Feed-in part 204: Grounding part

210: High Frequency Radiating Conductors 210a: Part 1

210b: Part II 220: Low Frequency Radiating Conductors

220a: Part Three 220b: Part Four

Detailed ways

2 to 4 are perspective views of a dual-band antenna according to an embodiment of the present invention. Please refer to Figure 2, Figure 3 and Figure 4 at the same time. The dual-band antenna 200 includes a feeding portion 202 , a grounding portion 204 , a high-frequency radiation conductor 210 and a low-frequency radiation conductor 220 . The feed-in part 202 is used for receiving a feed-in signal, and the ground part 204 is used for coupling to a ground source. The high-frequency radiation conductor 210 is used to send and receive a high-frequency signal, and includes a first part 210a and a second part 210b, wherein one end of the first part 210a of the high-frequency radiation conductor 210 is connected to the end of the second part 210b One end is coupled and substantially vertical, and forms an approximately L-shaped structure with the second portion 210b. In addition, the other end of the first part 210 a of the high frequency radiation conductor 210 is coupled to the feeding part 202 and the grounding part 204 . Moreover, the first part 210a of the high-frequency radiation conductor 210 is bent, and when it is bent, it can be bent like an arc, so as to be accommodated in a mobile electronic device in a limited space. . Wherein, the bending angle of the first portion 210 a of the high-frequency radiation conductor 210 may be about 80 to 120 degrees. In one embodiment, the bending angle of the first portion 210 a of the high frequency radiation conductor 210 is 90 degrees.

The low-frequency radiation conductor 220 is used to send and receive a low-frequency signal, and includes a third part 220a and a fourth part 220b, wherein the fourth part 220b of the low-frequency radiation conductor 220 has one end coupled to one end of the third part 220a And approximately vertical, and form another approximately L-shaped structure with the third part 220a, and the other end of the fourth part 220b of the low-frequency radiation conductor 220 is coupled to the first part 210a of the high-frequency radiation conductor 210 One side of the high-frequency radiation conductor 210 is substantially perpendicular to the first portion 210a. Furthermore, the third portion 220a of the low-frequency radiation conductor 220 is bent, and when bent, it can be bent like an arc, so as to be accommodated in a mobile electronic device in a limited space. Wherein, the bending angle of the third portion 220a of the low-frequency radiation conductor 220 can also be about 80 to 120 degrees. In one embodiment, the bending angle of the third portion 220 a of the low frequency radiation conductor 220 is 90 degrees.

In addition, the conductor width of the high-frequency radiation conductor 210 is greater than the conductor width of the low-frequency radiation conductor 220; The conductor width of any one of the third part 220a and the fourth part 220b of the radiation conductor 220 is used to increase the bandwidth of the high-frequency radiation conductor 210, which can accommodate signals of more frequency bands and achieve better Receiving effect. Wherein, the conductor width of the first part 210a or the second part 210b of the high-frequency radiation conductor 210 can be about 4 to 10 mm, and the first part 210a and the second part 210b can be designed according to different requirements into the same or different conductor width; and the conductor width of the third part 220a or the fourth part 220b of the low-frequency radiation conductor 220 can be about 1 to 3 millimeters, and the third part 220a and the fourth part 220b It can also be designed with the same or different conductor widths according to different requirements.

Furthermore, the second part 210b of the high-frequency radiation conductor 210 can be approximately parallel to the fourth part 220b of the low-frequency radiation conductor 220, so that the high-frequency radiation conductor 210 and the low-frequency radiation conductor 220 can maintain an appropriate distance, so that the two It has a certain degree of isolation to avoid harmonic interference when sending and receiving signals.

On the other hand, in order to meet the transmission characteristics of the dual-frequency antenna, the total length of the first part 210a and the second part 210b of the high-frequency radiation conductor 210 must be smaller than the third part 220a and the second part 220a of the low-frequency radiation conductor 220. The total length of the four parts 220b. Wherein, the total length of the first part 210a and the second part 210b of the high-frequency radiation conductor 210 may be about 3 to 4.5 centimeters (cm), while the third part 220a and the fourth part of the low-frequency radiation conductor 220 The total length of the parts 220b may be about 6 to 7 centimeters (cm).

In addition, the total length of the first part 210a and the second part 210b of the high-frequency radiation conductor 210 must be about a quarter of the corresponding wavelength of the high-frequency signal sent and received by the high-frequency radiation conductor 210, while the low-frequency The total length of the third part 220 a and the fourth part 220 b of the radiation conductor 220 must be approximately one quarter of the corresponding wavelength of the low frequency signal transmitted and received by the low frequency radiation conductor 220 . The total lengths of the high-frequency radiation conductor 210 and the low-frequency radiation conductor 220 can be adjusted correspondingly under the above-mentioned required conditions, according to actual needs and desired effects.

From the above-mentioned embodiments of the present invention, it can be known that the application of the above-mentioned dual-band antenna can obtain a better antenna effective space in the limited space of the mobile electronic device, and it can also have broadband characteristics to accommodate more frequency bands. signal, in order to achieve better reception effect.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (20)

1. A dual-band antenna, characterized in that it comprises: A first radiating conductor for sending and receiving a high-frequency signal, including a first part and a second part, the first part is bent and coupled with the second part, and the first part a portion approximately perpendicular to the second portion forming an approximately L-shaped structure with the second portion; and A second radiating conductor for sending and receiving a low-frequency signal, including a third part and a fourth part, the third part is bent and coupled with the fourth part, and the third part A portion is approximately perpendicular to the fourth portion and forms another approximately L-shaped structure with the fourth portion, and the fourth portion is approximately vertically coupled to the first portion of the first radiation conductor. 2. The dual-band antenna according to claim 1, wherein the conductor width of the first radiating conductor is larger than the conductor width of the second radiating conductor. 3. The dual-band antenna according to claim 1, wherein the second portion of the first radiating conductor is approximately parallel to the fourth portion of the second radiating conductor. 4. The dual-band antenna according to claim 1, wherein the total length of the first part and the second part of the first radiating conductor is shorter than the third part of the second radiating conductor part and the length of the fourth part. 5. The dual-band antenna according to claim 1, wherein the total length of the first part and the second part of the first radiating conductor is about four times the corresponding wavelength of the high-frequency signal one-third. 6. The dual-band antenna according to claim 1, wherein the total length of the third part and the fourth part of the second radiating conductor is about a quarter of the corresponding wavelength of the low-frequency signal one. 7. The dual-band antenna according to claim 1, wherein the first portion of the first radiating conductor and the third portion of the second radiating conductor are bent in an arc shape. 8. The dual-band antenna according to claim 1, wherein the bending angle of the first portion of the first radiating conductor and the third portion of the second radiating conductor is about 80° to 120 degrees. 9. The dual-band antenna according to claim 1, wherein the conductor width of the first radiation conductor is about 4 to 10 mm. 10. The dual-band antenna according to claim 1, wherein the conductor width of the second radiation conductor is about 1 to 3 mm. 11. A dual-band antenna, characterized in that it comprises: a grounding portion; a feed-in part for receiving a feed-in signal; A high-frequency radiation conductor includes a first part and a second part, one end of the first part is coupled to the second part and forms an approximately L-shaped structure with the second part, the The other end of the first part is coupled to the ground part and the feed-in part, and the first part is bent; and A low-frequency radiation conductor, including a third part and a fourth part, one end of the fourth part is coupled to the third part and forms another approximately L-shaped structure with the third part, the The other end of the fourth part is coupled to one side of the first part of the high-frequency radiation conductor and is approximately perpendicular to the first part of the high-frequency radiation conductor, and the third part is bent shape. 12. The dual-band antenna according to claim 11, wherein the conductor width of the low-frequency radiation conductor is smaller than the conductor width of the high-frequency radiation conductor. 13. The dual-band antenna according to claim 11, wherein the second portion of the high-frequency radiation conductor is approximately parallel to the fourth portion of the low-frequency radiation conductor. 14. The dual-band antenna according to claim 11, wherein the total length of the first part and the second part of the high-frequency radiation conductor is shorter than the third part of the low-frequency radiation conductor and the summed length of the fourth part. 15. The dual-band antenna according to claim 11, wherein the high-frequency radiation conductor sends and receives a high-frequency signal, and the sum of the first part and the second part of the high-frequency radiation conductor The length is about a quarter of the corresponding wavelength of the high-frequency signal. 16. The dual-band antenna according to claim 11, wherein the low-frequency radiation conductor transmits and receives a low-frequency signal, and the total length of the third part and the fourth part of the low-frequency radiation conductor is about This low frequency signal corresponds to a quarter of the wavelength. 17 . The dual-band antenna according to claim 11 , wherein the first portion of the high-frequency radiation conductor and the third portion of the low-frequency radiation conductor are bent in an arc shape. 18. The dual-band antenna according to claim 11, wherein the bending angle of the first portion of the high-frequency radiation conductor and the third portion of the low-frequency radiation conductor is about 80 to 120° Spend. 19. The dual-band antenna according to claim 11, wherein the conductor width of the high-frequency radiation conductor is about 4 to 10 mm. 20. The dual-band antenna according to claim 11, wherein the conductor width of the low-frequency radiation conductor is about 1 to 3 mm.

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