CN219591653U

CN219591653U - PIFA antenna and communication equipment

Info

Publication number: CN219591653U
Application number: CN202320488877.4U
Authority: CN
Inventors: 杨福龙
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-08-25
Anticipated expiration: 2033-03-06

Abstract

The embodiment of the utility model relates to the technical field of wireless communication and discloses a PIFA antenna and communication equipment, which comprises a substrate, a radio frequency circuit and a PIFA antenna body, wherein the substrate is provided with a first surface and a second surface, the first surface and the second surface are oppositely arranged, the radio frequency circuit is arranged on the substrate, the PIFA body comprises a radiator and a low-frequency parasitic radiation piece, the radiator is arranged on the first surface, the radiator is of an integrated structure, the radiator comprises a grounding part and a feeding part, the grounding part is used for grounding, the feeding part is electrically connected with the radio frequency circuit, the low-frequency parasitic radiation piece is arranged on the first surface, the low-frequency parasitic radiation piece is adjacent to the radiator, and the low-frequency parasitic radiation piece is used for resonating the low frequency of the radiator so as to increase the bandwidth of the low frequency of the radiator. By the mode, the low-frequency bandwidth of the PIFA antenna can be increased.

Description

PIFA antenna and communication equipment

Technical Field

The embodiment of the utility model relates to the technical field of wireless communication, in particular to a PIFA antenna and communication equipment.

Background

With the development of communication equipment, the communication equipment has more functions, and the communication equipment transmits and receives more information, and the communication equipment transmits information by transmitting signals outwards through a built-in PIFA antenna and receives information by receiving signals.

In the implementation process of the embodiment of the utility model, the inventor finds that: at present, a PIFA antenna comprises a substrate, a radio frequency circuit and a radiator, wherein the radio frequency circuit and the radiator are arranged on the substrate, and the radio frequency circuit is connected with the radiator. The PIFA antenna may cover part of the frequency bands of 2G, 3G and 4GLTE, but the bandwidth of the low frequency of the existing PIFA antenna is 30MHz to 50MHz, and the bandwidth of the low frequency of the PIFA antenna is narrow.

Disclosure of Invention

The embodiment of the utility model mainly solves the technical problem of providing a PIFA antenna and communication equipment, and adding a low-frequency parasitic radiation piece so as to increase the bandwidth of the low frequency of the PIFA antenna.

In order to solve the technical problems, one technical scheme adopted by the embodiment of the utility model is as follows: the utility model provides a PIFA antenna, includes base plate, radio frequency circuit and PIFA antenna body, the base plate is provided with first surface and second surface, first surface and second surface set up relatively, radio frequency circuit set up in the base plate, PIFA antenna body includes radiator and low frequency parasitic radiation piece, the radiator set up in first surface, the radiator is integrated into one piece structure, the radiator is including ground connection portion and feed portion, ground connection portion is used for the ground connection, feed portion with the radio frequency circuit electricity is connected, the low frequency parasitic radiation piece set up in first surface, the low frequency parasitic radiation piece is adjacent the radiator, the low frequency parasitic radiation piece is used for producing the resonance to the low frequency of radiator, increases the bandwidth of the low frequency of radiator.

Optionally, the PIFA antenna further includes an insulating bearing platform, the insulating bearing platform is disposed on the first surface, and the radiator and the low-frequency parasitic radiator are both disposed on the insulating bearing platform.

Optionally, the insulating bearing platform is provided with a first side, a second side and a bearing plane, the first side and the second side are located at two sides of the bearing plane, and the radiator and the low-frequency parasitic radiator are arranged at the first side, the second side and the bearing plane.

Optionally, the radiator further includes a first side portion, a second side portion, and a plane portion, where the first side portion and the second side portion are both disposed on the first side surface, and the plane portion is disposed on the bearing plane;

the plane portion is provided with logical chamber and opening, the opening with lead to the chamber intercommunication, first lateral part and second lateral part all connect in the first side of plane portion, and first lateral part and second lateral part are located open-ended both sides, the feed portion sets up in first side, the feed portion with first lateral part is connected, the earth connection sets up in the second side, the earth connection in the second side of plane portion, the plane portion towards it has extension to lead to the chamber extension.

Optionally, the low-frequency parasitic radiation element includes a first bending part, a second bending part, a third bending part, a fourth bending part, a fifth bending part, a sixth bending part and a seventh bending part which are sequentially connected;

the first bending part and the fifth bending part are arranged on the first side face, the second bending part, the fourth bending part and the sixth bending part are arranged on the bearing plane, the third bending part and the seventh bending part are arranged on the second side face, the third bending part is provided with a groove, and the seventh bending part extends into the groove.

Optionally, the first bending part is located between the first side part and the fifth bending part, the second bending part is located between the sixth bending part and the plane part, and the third bending part and the grounding part are arranged at intervals.

Optionally, the height of the PIFA antenna body is 7 millimeters.

Optionally, the headroom of the PIFA antenna body is 0 mm.

Optionally, the area of the PIFA antenna body is less than 600 millimeters.

In order to solve the technical problems, another technical scheme adopted by the embodiment of the utility model is as follows: there is provided a communication device comprising a PIFA antenna as described above.

In the embodiment of the utility model, the PIFA antenna comprises a substrate, a radio frequency circuit and a PIFA antenna body, wherein the substrate is provided with a first surface and a second surface, the first surface and the second surface are oppositely arranged, the radio frequency circuit is arranged on the substrate, the PIFA antenna body comprises a radiator and a low-frequency parasitic radiation piece, the radiator is arranged on the first surface, the radiator is of an integrated structure, the radiator comprises a grounding part and a feeding part, the grounding part is used for grounding, the feeding part is electrically connected with the radio frequency circuit, the low-frequency parasitic radiation piece is arranged on the first surface, the low-frequency parasitic radiation piece is adjacent to the radiator, and the low-frequency parasitic radiation piece is used for generating resonance to the low frequency of the radiator so as to increase the bandwidth of the low frequency of the radiator. Thereby increasing the bandwidth of the low frequency of the PIFA antenna.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a PIFA antenna according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a radiator in a PIFA antenna body in a PIFA antenna provided by an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a low-frequency parasitic radiator in a PIFA antenna body in a PIFA antenna according to an embodiment of the present utility model

Fig. 4 is a diagram of performance parameters of a PIFA antenna provided by an embodiment of the present utility model;

fig. 5 is a schematic diagram of the bandwidth of the low frequency of the PIFA antenna provided by an embodiment of the present utility model;

fig. 6 is a schematic diagram of the bandwidth of the high frequency of the PIFA antenna provided by an embodiment of the present utility model.

Reference numerals illustrate:

100. a PIFA antenna; 1. a substrate; 11. a first surface; 12. a second surface; 2. a radio frequency circuit; 3. an insulating bearing table; 31. a first side; 32. a second side; 33. a load bearing plane; 4. a PIFA antenna body; 41. a radiator; 411. a first side portion; 412. a second side portion; 413. a planar portion; 4131. a cavity is communicated; 4132. an opening; 414. an extension; 415. a grounding part; 416. a power feeding section; 42. a low frequency parasitic radiator; 421. a first bending part; 422. a second bending part; 423. a third bending part; 4231. a groove; 424. a fourth bending part; 425. a fifth bending part; 426. a sixth bending part; 427. and a seventh bending part.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the utility model described below can be combined with one another as long as they do not conflict with one another.

Referring to fig. 1, a PIFA antenna 100 includes a substrate 1, a radio frequency circuit 2, an insulating carrier 3, and a PIFA antenna body 4. The radio frequency circuit 2 is disposed on the substrate 1. The insulating body is provided on the substrate 1. The PIFA antenna bodies 4 are arranged on the insulating bearing table 3, and the PIFA antenna bodies 4 are electrically connected with the radio frequency circuit 2.

For the above substrate 1, referring to fig. 1, the substrate 1 is provided with a first surface 11 and a second surface 12. The first surface 11 and the second surface 12 are arranged opposite. The substrate 1 may act as a reflection plane.

For the insulating bearing platform 3, referring to fig. 1, the insulating bearing platform 3 is disposed on the first surface 11, the insulating bearing platform 3 is provided with a first side 31, a second side 32 and a bearing plane 33, and the first side 31 and the second side 32 are located at two sides of the bearing plane 33.

For the PIFA antenna body 4 described above, referring to fig. 2-6, the PIFA antenna body 4 includes a radiator 41 and a low frequency parasitic radiator 42. The radiator 41 and the low frequency parasitic radiator 42 are disposed on the first side 31, the second side 32 and the carrying plane 33, so that the radiator 41 and the low frequency parasitic radiator 42 are disposed on the insulating carrying platform 3.

With the radiator 41 described above, the radiator 41 is of an integral structure, and the radiator 41 includes a first side 411, a second side 412, a planar portion 413, an extension 414, a ground portion 415, and a power feeding portion 416. The first side 411 is disposed on the first side 31, and the first side 411 plays a tuning role. The second side portion 412 is disposed on the first side surface 31. The plane part 413 is disposed on the carrying plane 33, the plane part 413 is provided with a through cavity 4131 and an opening 4132, the opening 4132 is communicated with the through cavity 4131, one side of the plane part 413 is connected with the first side part 411 and the second side part 412, and the first side part 411 and the second side part 412 are located at two sides of the opening 4132, wherein part of the plane part 413 and the second side part 412 together enable the radiator 41 to cover a 2G or 3G frequency band, part of the plane part 413 is located at one side of the through cavity 4131, and part of the plane part 413 is connected with the second side part 412. The extension portion 414 is formed by extending the plane portion 413 toward the through cavity 4131, and the extension portion 414 enables the radiator 41 to cover the 3G frequency band. The radiator 41 covers the frequency bands B1, B2, B3, B4, B5, B8, B9, etc. of 4GLTE by frequency-doubled resonance of the extension 414, portions of the planar portion 413, and the second side portion 412. The grounding portion 415 is disposed on the second side surface 32, the grounding portion 415 is connected to the second side edge of the planar portion 413, and the grounding portion 415 is used for grounding. The feeding portion 416 is disposed on the first side 31, the feeding portion 416 is connected to the first side 411, the feeding portion 416 is electrically connected to the radio frequency circuit 2, and the feeding portion 416 is used for signal transmission.

For the low-frequency parasitic radiator 42 described above, the low-frequency parasitic radiator 42 adjoins the radiator 41, and the low-frequency parasitic radiator 42 includes a first bent portion 421, a second bent portion 422, a third bent portion 423, a fourth bent portion 424, a fifth bent portion 425, a sixth bent portion 426, and a seventh bent portion 427, which are connected in order. The first bending portion 421 is disposed on the first side surface 31. The second bending portion 422 is disposed on the carrying plane 33. The third bending portion 423 is disposed on the second side surface 32, the third bending portion 423 is disposed at an interval from the grounding portion 415, and the third bending portion 423 is provided with a groove 4231. The fourth bending portion 424 is disposed on the carrying plane 33. The fifth bending portion 425 is disposed on the first side 31, and the first bending portion 421 is located between the first side 411 and the fifth bending portion 425. The sixth bending portion 426 is disposed on the carrying plane 33, and the second bending portion 422 is located between the sixth bending portion 426 and the plane 413. The seventh bending part 427 is disposed on the second side surface 32, and the seventh bending part 427 extends into the groove 4231. The low frequency parasitic radiator 42 is configured to resonate the low frequency of the radiator 41, and increase the bandwidth of the low frequency of the radiator 41. The low-frequency parasitic radiation element 42 enables the PIFA antenna body 4 to realize a low-frequency standing wave ratio, when the low-frequency standing wave ratio of the PIFA antenna body 4 is smaller than 3, the bandwidth of the low frequency ranges from 850MHz to 970MHz, the bandwidth of the low frequency reaches 120MHz, and the efficiency in the bandwidth of the low frequency ranges from 880MHz to 960MHz to be more than 50%. When the high-frequency standing wave ratio of the PIFA antenna body 4 is smaller than 3, the high-frequency band ranges from 1700MHz to 2200MHz, the high-frequency band reaches 500MHz, and the efficiency in the high-frequency band ranges from 1710MHz to 2170MHz is above 60%.

In some embodiments, the height of the PIFA antenna body 4 is 7 millimeters, the headroom of the PIFA antenna body 4 is 0 millimeters, and the area of the PIFA antenna body 4 is less than 600 millimeters.

In the embodiment of the utility model, the PIFA antenna 100 includes a substrate 1, a radio frequency circuit 2 and a PIFA antenna body 4, the substrate 1 is provided with a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 are oppositely arranged, the radio frequency circuit 2 is arranged on the substrate 1, the PIFA body includes a radiator 41 and a low-frequency parasitic radiator 42, the radiator 41 is arranged on the first surface 11, the radiator 41 is in an integrated structure, the radiator 41 includes a grounding portion 415 and a feeding portion 416, the grounding portion 415 is used for grounding, the feeding portion 416 is electrically connected with the radio frequency circuit 2, the low-frequency parasitic radiator 42 is arranged on the first surface 11, the low-frequency parasitic radiator 42 is adjacent to the radiator 41, and the low-frequency parasitic radiator 42 is used for resonating the low frequency of the radiator 41, so that the low-frequency bandwidth of the radiator 41 is increased. Thereby increasing the bandwidth of the low frequency of the PIFA antenna 100.

The present utility model also provides an embodiment of a communication device, where the communication device includes the PIFA antenna 100 described above, and the specific structure and function of the PIFA antenna 100 can be referred to the above embodiment, which is not described herein again.

It should be noted that the description of the present utility model and the accompanying drawings illustrate preferred embodiments of the present utility model, but the present utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations of the utility model, but are provided for a more thorough understanding of the present utility model. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this utility model as defined in the appended claims. .

Claims

1. A PIFA antenna, comprising:

a substrate provided with a first surface and a second surface, wherein the first surface and the second surface are oppositely arranged;

the radio frequency circuit is arranged on the substrate;

the PIFA antenna body comprises a radiator and a low-frequency parasitic radiation piece, wherein the radiator is arranged on the first surface, the radiator is of an integrated structure, the radiator comprises a grounding part and a feeding part, the grounding part is used for grounding, the feeding part is electrically connected with a radio frequency circuit, the low-frequency parasitic radiation piece is arranged on the first surface, the low-frequency parasitic radiation piece is adjacent to the radiator, the low-frequency parasitic radiation piece is used for resonating low frequency of the radiator, and the bandwidth of low frequency of the radiator is increased.

2. The PIFA antenna according to claim 1, wherein,

the PIFA antenna further comprises an insulating bearing table, the insulating bearing table is arranged on the first surface, and the radiator and the low-frequency parasitic radiation piece are both arranged on the insulating bearing table.

3. The PIFA antenna according to claim 2, wherein,

the insulating plummer is provided with first side, second side and loading plane, first side and second side are located the both sides of loading plane, radiator and low frequency parasitic radiation spare set up in first side, second side and loading plane.

4. The PIFA antenna according to claim 3, wherein,

the radiator further comprises a first side part, a second side part and a plane part, wherein the first side part and the second side part are arranged on the first side surface, and the plane part is arranged on the bearing plane;

5. The PIFA antenna according to claim 4, wherein,

the low-frequency parasitic radiation piece comprises a first bending part, a second bending part, a third bending part, a fourth bending part, a fifth bending part, a sixth bending part and a seventh bending part which are sequentially connected;

6. The PIFA antenna according to claim 5, wherein,

the first bending part is located between the first side part and the fifth bending part, the second bending part is located between the sixth bending part and the plane part, and the third bending part and the grounding part are arranged at intervals.

7. The PIFA antenna of any one of claims 1-6, wherein,

the height of the PIFA antenna body is 7 mm.

8. The PIFA antenna of any one of claims 1-6, wherein,

the headroom of the PIFA antenna body is 0 mm.

9. The PIFA antenna of any one of claims 1-6, wherein,

the area of the PIFA antenna body is smaller than 600 mm.

10. A communication device comprising a PIFA antenna as claimed in any one of claims 1-9.