CN217544925U - WIFI dual-band PIFA antenna and transmission system - Google Patents
WIFI dual-band PIFA antenna and transmission system Download PDFInfo
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- CN217544925U CN217544925U CN202221711137.4U CN202221711137U CN217544925U CN 217544925 U CN217544925 U CN 217544925U CN 202221711137 U CN202221711137 U CN 202221711137U CN 217544925 U CN217544925 U CN 217544925U
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Abstract
The utility model provides a WIFI dual-frenquency PIFA antenna and transmission system, the WIFI dual-frenquency PIFA antenna that provides includes: a base having opposing bottom and top surfaces and a first side surface connecting the bottom and top surfaces; the metal block is embedded into the bottom surface; the outer edge of the main match line of the radiator is provided with a grounding part and a feed part respectively, and the radiator comprises: a main radiating section; the signal transmission section is connected with the main radiation section in an L shape; an impedance matching section connected to the signal transmission section; a signal feed-in section connected to the impedance matching section; the main radiation section, the signal transmission section and the impedance matching section are all arranged on the top surface, the signal feed-in section is arranged on the first side surface, and the widths of the main radiation section and the signal transmission section are both 3mm; a coupling gap is arranged between the signal transmission section and the impedance matching section, and the width of the coupling gap is 1.3mm. The utility model provides a WIFI dual-frenquency PIFA antenna small in size, simple structure, transmission high efficiency, high gain is applicable to miniaturized product design.
Description
Technical Field
The utility model belongs to the technical field of communication transmission, especially, relate to a WIFI dual-frenquency PIFA antenna and transmission system.
Background
PIFA antennas have advantages of small size, light weight, simple manufacturing process, easy conformality, etc., and are widely used. The PIFA antenna can work simultaneously in a plurality of frequency bands by utilizing a slotting technology, and has high radiation efficiency. Although the research and application of the PIFA antenna are mature at present, there are many problems worth studying the analysis and research of the electromagnetic scattering characteristics of the PIFA antenna. So far, no ideal mode has been found, which not only can reduce the volume of the antenna, but also can not influence the performance of the antenna. Space, gain and bandwidth are 3 mutually restricted factors of the antenna, the space is small, the efficiency requirement is high, and the design of the antenna is challenged.
SUMMERY OF THE UTILITY MODEL
In view of the problem that exists among the above-mentioned prior art, the utility model discloses a main aim at provides a WIFI dual-frenquency PIFA antenna and transmission system, and the WIFI dual-frenquency PIFA antenna small in size that provides, simple structure transmits high efficiency, and high gain is applicable to miniaturized product design.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a WIFI dual-frenquency PIFA antenna, this WIFI dual-frenquency PIFA antenna includes:
a base having opposing bottom and top surfaces and a first side surface connecting the bottom and top surfaces;
a metal block embedded in the bottom surface;
the outer edge of the main match line of the radiator is provided with a grounding part and a feed part respectively, and the radiator comprises:
a main radiating section;
the signal transmission section is connected with the main radiation section in an L shape;
an impedance matching section connected to the signal transmission section;
a signal feed-in section connected to the impedance matching section;
the main radiation section, the signal transmission section and the impedance matching section are all arranged on the top surface, the signal feed-in section is arranged on the first side surface, and the widths of the main radiation section and the signal transmission section are both 3mm; and a coupling gap is arranged between the signal transmission section and the impedance matching section, and the width of the coupling gap is 1.3mm.
As a further description of the above technical solution, the main radiating section is a first radiating portion extending from the signal transmitting section.
As a further description of the above technical solution, the first side surface has a first step portion protruding inward, and the signal feed-in section is disposed on the first step portion.
As a further description of the above technical solution, a clearance area is provided on the base body, and the clearance area is located right below the radiator.
As a further description of the above technical solution, the substrate is made of a plastic material.
The utility model also provides a transmission system adopts as above WIFI dual-frenquency PIFA antenna, still include a PCB board, the below of base member is located to the PCB board, metal block, ground connection portion, the feed portion of WIFI dual-frenquency PIFA antenna respectively with the PCB board is connected.
The utility model discloses an outstanding effect does:
in the WIFI dual-band PIFA antenna, the width of the main radiation section and the width of the signal transmission section are both 3mm, a coupling gap with the width of 1.3mm is arranged between the signal transmission section and the impedance matching section, through uncertain performance testing, the whole gain of the antenna is optimized to 1dbi-2dbi, the voltage standing wave ratio is optimized to 0.5-1, the clearance area is arranged in a matching way, the emission efficiency of the antenna signal is 30% after being promoted from the average 25% of the original efficiency, and the effect is obvious;
the utility model discloses an among the WIFI dual-frenquency PIFA antenna, the irradiator is whole to be the metal stamping workpiece, and ground connection portion and feed portion all adopt the method of directly buckling directly to buckle the gained, have practiced thrift manufacturing cost.
Drawings
Fig. 1 is an exploded view of a WIFI dual-band PIFA antenna of the present invention;
fig. 2 is a schematic structural diagram of the WIFI dual-band PIFA antenna of the present invention after being assembled;
fig. 3 is the utility model discloses the bottom view of signal feed-in section of well WIFI dual-frenquency PIFA antenna when first step portion is not bent.
The reference numbers illustrate:
1-a substrate; 11-a first step; 12-a clearance zone; 2-a metal block; 31-a ground part; 32-a power feeding section; 33-a main radiating section; 34-a signal transmission segment; 35-an impedance matching section; 36-a signal feed-in section; 4-coupling gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or component to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention with reference to the overall structure thereof.
Referring to fig. 1 to 3, an embodiment of the present invention discloses a WIFI dual-band PIFA antenna, which includes:
a base 1, said base 1 having opposing bottom and top surfaces and a first side surface connecting said bottom and top surfaces;
the metal block 2 is embedded into the bottom surface;
the outer edge of the main match line of the radiator is provided with a grounding part 31 and a feeding part 32 respectively, and the radiator comprises:
a main radiating section 33;
a signal transmission section 34 connected to the main radiation section 33 in an L-shape;
an impedance matching section 35 connected to the signal transmission section 34;
a signal feed section 36 connected to the impedance matching section 35;
the main radiating section 33, the signal transmission section 34 and the impedance matching section 35 are all disposed on the top surface, the signal feed-in section 36 is disposed on the first side surface, and the widths of the main radiating section 33 and the signal transmission section are both 3mm; the signal transmission section 34 and the impedance matching section 35 have a coupling gap 4 therebetween, and the width of the coupling gap 4 is 1.3mm.
In the above arrangement, the main radiation section 33 of the radiation body is used for receiving and transmitting signals, the signal transmission section 34 is connected to the main radiation section 33 in an L shape for transmitting signals, the outer edge of the main matching line of the radiation body is respectively provided with the grounding section 31 and the feeding section 32, and the impedance matching section 35 is connected to the signal transmission section 34 for impedance matching to adjust the wavelength of the transmission line; the base body 1 is provided with a bottom surface and a top surface which are opposite to each other, the main radiation section 33, the signal transmission section 34 and the impedance matching section 35 are arranged on the top surface, the signal feed-in section 36 is connected with the impedance matching section 35 and arranged on a first side surface which is connected with the bottom surface and the top surface and used for feeding in signals, the metal block 2 is embedded into the bottom surface and is connected with the ground after the WIFI dual-frequency PIFA antenna is connected with a PCB, and the grounding part 31 and the feeding part 32 which are respectively arranged on the outer edge of the main matching line of the radiation body are also respectively connected with the corresponding connection points of the PCB. The width of the main radiation section 33 and the width of the signal transmission section 34 are both 3mm, the signal transmission section 34 and the impedance matching section 35 are provided with a coupling gap 4, and the width of the coupling gap 4 is 1.3mm, so that the gain of the WIFI dual-frequency PIFA antenna is optimized to 1dbi-2dbi, the voltage standing-wave ratio is optimized to 0.5-1, the whole antenna is small and exquisite in size, simple in structure, high in transmission efficiency and high in gain, and is suitable for design of miniaturized products.
Referring to fig. 5, in this embodiment, the base 1 is integrally formed by a plastic material, has a height of 5.7mm, and has a top surface, a bottom surface and a first side surface connecting the top surface and the bottom surface, the first side surface is defined as a front side surface, the first side surface has a first step portion 11 protruding inward, the radiator can be directly formed by punching with a hardware mold, wherein the signal feed-in section 36 is directly bent and attached to the first step portion 11 downward by the impedance matching section 35, the feed-in section 32 formed at a lower end thereof is connected to a PCB for signal feed-in, and the ground section 31 is also directly bent and attached to the first side surface, so that the production cost is saved.
Specifically, in this embodiment, still be equipped with clearance area 12 on the base member 1, clearance area 12 is located the irradiator directly under, is the rectangle, its longer length direction with the length direction of main radiation section 33 is unanimous, shorter width direction with the width direction of main radiation section 33 is unanimous. The arrangement of the clearance area 12 can improve the overall radiation efficiency of the radiator.
Referring to fig. specifically, in this embodiment, the main radiating section 33 is a first radiating portion extending from the signal transmitting section 34, and is attached to the top surface of the substrate 1 in an L shape with the signal transmitting section 34 for receiving and transmitting signals.
Specifically, in this embodiment, the widths of the main radiation section 33 and the signal transmission section 34 are both 3mm, a coupling gap 4 is provided between the signal transmission section 34 and the impedance matching section 35, the width of the coupling gap 4 is 1.3mm, in an uncertain performance test, the overall gain of the antenna is optimized to 1dbi-2dbi, the voltage standing wave ratio is optimized to 0.5-1, and in cooperation with the clearance area 12, the transmission efficiency of the antenna signal is 30% after being improved from the average 25% of the original efficiency, and the effect is significant.
Specifically, in this embodiment, the radiator is slotted by using a slotting technology, so that simultaneous work of wifi2.4ghz and wifi5.8ghz is realized.
Specifically, in this embodiment, the metal block 2 may be welded into the base 1 by an ultrasonic welding machine, and does not protrude from the bottom surface of the base 1.
Specifically, this embodiment further provides a transmission system, which employs the above-mentioned WIFI dual-band PIFA antenna, and further includes a PCB (not shown in the figure), where the PCB is disposed below the substrate 1, and the metal block 2, the grounding portion 31, and the feeding portion 32 of the WIFI dual-band PIFA antenna are respectively connected to the PCB.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or some features may be substituted by other modifications, equivalents, improvements, and the like without departing from the spirit and scope of the invention.
Claims (6)
1. A WIFI dual-frenquency PIFA antenna, its characterized in that includes:
a base having opposing bottom and top surfaces and a first side surface connecting the bottom and top surfaces;
a metal block embedded in the bottom surface;
the outer edge of the main match line of the radiator is provided with a grounding part and a feed part respectively, and the radiator comprises:
a main radiating section;
the signal transmission section is connected with the main radiation section in an L shape;
an impedance matching section connected to the signal transmission section;
a signal feed-in section connected to the impedance matching section;
the main radiation section, the signal transmission section and the impedance matching section are all arranged on the top surface, the signal feed-in section is arranged on the first side surface, and the widths of the main radiation section and the signal transmission section are both 3mm; a coupling gap is arranged between the signal transmission section and the impedance matching section, and the width of the coupling gap is 1.3mm.
2. A WIFI dual band PIFA antenna as claimed in claim 1, wherein said main radiating section is a first radiating portion extending from said signal transmission section.
3. A WIFI dual band PIFA antenna as claimed in claim 1, wherein said first side has a first step portion protruding inward, and said signal feed-in section is disposed on said first step portion.
4. A WIFI dual band PIFA antenna as claimed in claim 1, wherein a clearance area is provided on the substrate, and the clearance area is located right below the radiator.
5. A WIFI dual-band PIFA antenna according to claim 4, wherein the substrate is made of plastic material.
6. A transmission system adopts the WIFI dual-band PIFA antenna as claimed in any one of claims 1 to 5, further comprising a PCB board, wherein the PCB board is arranged below the substrate, and the metal block, the grounding part and the feeding part of the WIFI dual-band PIFA antenna are respectively connected with the PCB board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221711137.4U CN217544925U (en) | 2022-07-05 | 2022-07-05 | WIFI dual-band PIFA antenna and transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221711137.4U CN217544925U (en) | 2022-07-05 | 2022-07-05 | WIFI dual-band PIFA antenna and transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217544925U true CN217544925U (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221711137.4U Active CN217544925U (en) | 2022-07-05 | 2022-07-05 | WIFI dual-band PIFA antenna and transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217544925U (en) |
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2022
- 2022-07-05 CN CN202221711137.4U patent/CN217544925U/en active Active
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