CN208489353U - A kind of compact dual-frequency PIFA antenna applied to WLAN - Google Patents
A kind of compact dual-frequency PIFA antenna applied to WLAN Download PDFInfo
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- CN208489353U CN208489353U CN201821087948.5U CN201821087948U CN208489353U CN 208489353 U CN208489353 U CN 208489353U CN 201821087948 U CN201821087948 U CN 201821087948U CN 208489353 U CN208489353 U CN 208489353U
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Abstract
The utility model discloses a kind of compact dual-frequency PIFA antennas applied to WLAN, it is related to PIFA antenna technical field, long minor matters front end and brachyplast section end connects integral, gap are formed between end and brachyplast section front end, radiation patch is in " mouth " the type structure for being equipped with and being open；Feed and grounding probe insertion brachyplast section setting, radiation patch are supported in above dielectric-slab by feed and grounding probe, and the top edge of brachyplast section is concordant with the top edge of dielectric-slab to be arranged, and earth plate fitting is set to dielectric-slab bottom；Radiation patch and dielectric-slab are located at Different Plane, are connected by feed with grounding probe, are fed in a manner of coaxial feed.The utility model reaches the job requirement of WLAN terminal equipment by way of coaxial feed while reducing antenna volume, the earth plate and radiation patch of antenna are set in the Different Plane of dielectric-slab, feeding point can be selected in patch any position to realize impedance matching, and be avoided that the influence to aerial radiation.
Description
Technical field
The utility model relates to PIFA antenna technical fields, and in particular to a kind of PIFA antenna applied to WLAN.
Background technique
Wireless LAN (WLAN) is the data transmission system being communicatively coupled using radio-frequency technique using electromagnetic wave,
Its birth not only enriches daily life, and the exchange of more people provides a great convenience.But as people are logical
Letter demand it is growing, the applicable frequency ranges of WLAN institute are more and more, and the antenna for being only used for single frequency range has been difficult to adapt to
The requirement of WLAN multiband work.
Monopole antenna and PIFA antenna are that the two major classes of traditional antenna are other.Wherein, monopole antenna is for working environment
It is more demanding, the radiance of antenna, and impedance are influenced when as built-in antenna vulnerable to the interference of component around
With more difficult, thus electronic equipment generally selects that carrying is easier to realize double frequency multiple-frequency operation and radiance is more stable
PIFA antenna.But conventional PIFA antenna frequency band is narrow, gain is insufficient, return loss is higher, can not still better meet communication requirement.
Utility model content
The utility model provides one kind and is applied to precisely in order to avoid above-mentioned existing deficiencies in the technology
The compact dual-frequency PIFA antenna of WLAN.
The present invention adopts the following technical scheme that a kind of compact dual-frequency PIFA days applied to WLAN in order to solve the technical problem
Line, radiation patch is saved by brachyplast and long minor matters are constituted, and the long minor matters front end connect integral, end with brachyplast section end
Gap is formed between end and brachyplast section front end, the radiation patch is in " mouth " type structure equipped with opening；
Feed and grounding probe are embedded in the brachyplast section setting, and the radiation patch is visited by the feed and the short circuit
Needle is supported in above dielectric-slab, and the top edge of the brachyplast section is concordant with the top edge of the dielectric-slab to be arranged, earth plate fitting
Set on the dielectric-slab bottom；There are gaps between the feed and the grounding probe；The radiation patch and the medium
Plate is located at Different Plane, is connected by the feed with the grounding probe, is fed in a manner of coaxial feed.
Further, the earth plate and the dielectric-slab are rectangular plate-like structure, and the dielectric-slab is covered in described connect
Floor bottoms.
Further, the feed is that the ohm coaxial line of sub-miniature A connector is fed, and the grounding probe is for short circuit.
Further, the PIFA antenna is made of metal material.
The utility model provides a kind of compact dual-frequency PIFA antenna applied to WLAN, has the advantages that
1, reach the job requirement of WLAN terminal equipment, day while reducing antenna volume by way of coaxial feed
The earth plate and radiation patch of line are set in the Different Plane of dielectric-slab, and feeding point can be selected in any position in patch and be hindered with realizing
Anti- matching, and it is avoided that the influence to aerial radiation；
2, can according to the needs of actual design, change the gap between short-circuit minor matters top edge and earth plate top edge with
And changing the impedance match situation of the width realization antenna of long minor matters, applicability is good；
3, feedback feeder line radiation loss in coaxial line bottom is small, improves the performance of antenna, has broadened antenna impedance band merit；
4, structure is simple, is easily installed fixation, is conducive to the integrated of communication system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 the utility model clawback loss S11Curve；
Fig. 3 is the change curve of the utility model voltage standing wave ratio；
Fig. 4 is antenna in the directional pattern that frequency is at 2.45GHz on the direction xoz.
Fig. 5 is antenna in the directional pattern that frequency is at 2.45GHz on the direction yoz.
Fig. 6 is antenna in the directional pattern that frequency is at 5.264GHz on the direction xoz.
Fig. 7 is antenna in the directional pattern that frequency is at 5.264GHz on the direction yoz.
In figure:
1, radiation patch, 11, brachyplast section, 12, long minor matters；2, grounding probe；3, feed；4, dielectric-slab；5, earth plate.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described implementation
Example is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to the utility model
The range of protection.
As shown in Figure 1, its structural relation are as follows: radiation patch 1 is made of brachyplast section 11 and long minor matters 12, long 12 front end of minor matters
11 ends are saved with brachyplast and connects integral, and end and brachyplast are saved and form gap between 11 front ends, and radiation patch 1 is in be equipped with to be open
13 " mouth " type structure；While guaranteeing current path length, the overall volume of antenna is reduced, structure is simple, is easy to make
Make.
Feed 3 and grounding probe 2 are embedded in 11 setting of brachyplast section, and radiation patch 1 is supported in by feed 3 and grounding probe 2
4 top of dielectric-slab, the top edge of brachyplast section 11 is concordant with the top edge of dielectric-slab 4 to be arranged, and the fitting of earth plate 5 is set to dielectric-slab 4
Bottom；There are gaps between feed 3 and grounding probe 2；Radiation patch 1 and dielectric-slab 4 are located at Different Plane, pass through 3 He of feed
Grounding probe 2 connects, and is fed in a manner of coaxial feed.
The antenna feed of coaxial feed can be set on any position in radiation patch 1 to realize impedance matching, and avoids
Aerial radiation is had an impact, coaxial line bottom feedback feeder line radiation loss is small, improves the performance of antenna；Its structure is simple simultaneously,
It is integrated conducive to communication system.Compared to feed microstrip line, coaxial feed is easily achieved the miniaturization of antenna, while making day
Line has broader working band, and the far-field pattern of the radiation of antenna also has better symmetry.
Preferably, earth plate 4 and dielectric-slab 5 are rectangular plate-like structure, and dielectric-slab 5 is covered in 4 bottom of earth plate.
Preferably, feed 3 is that 50 ohm coaxial lines of sub-miniature A connector are fed, and grounding probe 2 is for short circuit.
Preferably, PIFA antenna is made of metal material, and has saved material under the premise of guaranteeing structural support intensity, drop
Low antenna height and difficulty of processing are easier to realize the miniaturization of antenna.
When specifically used, the technical indicator that the length-width ratio of earth plate 4 and dielectric-slab 5 reaches as needed is calculated, day
Whole line is in symmetrical structure substantially.It is stayed between feed 3 and grounding probe 2 and sets gap, which directly affects the impedance of antenna
Match, adjusts 3 position of feed of antenna, can be obtained relatively good impedance matching.
Microstrip antenna is mainly a kind of resonant aerial, and relative bandwidth is narrow, and the bandwidth being typically designed only has 2% to arrive
5%.
Referring to fig. 2, for the utility model in frequency range 2.388-2.523GHz, return loss is less than -10dB, and bandwidth is
135MHz, relative bandwidth reach 5.5%, in frequency range 4.964-5.659GHz frequency range, the S of antenna11Parameter is less than
- 10dB, bandwidth 695MHz, relative bandwidth have reached 13.2% compared with the monopole antenna of feed microstrip line, and bandwidth has non-
Often big promotion.
Referring to Fig. 3, when voltage standing wave ratio is less than 2, frequency band of the antenna at WLAN2.4GHz is the utility model
2.38-2.529GHz the frequency band at WLAN5.2GHz is 4.945-5.685GHz.
Referring to fig. 4~Fig. 7, the face E of the utility model and the antenna pattern in the face H have certain omni-directional.Antenna exists
Bandwidth at 2.4GHz is 135MHz, and relative bandwidth reaches 5.5%, and the bandwidth at 5.2GHz is 695MHz, and relative bandwidth reaches
To 13.2%, two working frequency range of WLAN are completely covered, antenna radiation characteristic at each communication system working frequency is good,
It is kept substantially omni-directional.Meanwhile the directional pattern and other performance characteristics such as gain of antenna are all satisfied WLAN terminal and set
Standby design requirement.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (4)
1. a kind of compact dual-frequency PIFA antenna applied to WLAN, it is characterised in that: radiation patch (1) by brachyplast section (11) and
Long minor matters (12) are constituted, long minor matters (12) front end saved with the brachyplast (11) end connect it is integral, end with it is described
Gap is formed between brachyplast section (11) front end, the radiation patch (1) is in " mouth " the type structure for being equipped with opening (13)；
Feed (3) and grounding probe (2) are embedded in brachyplast section (11) setting, and the radiation patch (1) passes through the feed (3)
It is supported in above dielectric-slab (4) with the grounding probe (2), top edge and the dielectric-slab (4) of the brachyplast section (11)
Top edge is concordantly arranged, and earth plate (5) fitting is set to the dielectric-slab (4) bottom；The feed (3) and the grounding probe
(2) there are gaps between；The radiation patch (1) and the dielectric-slab (4) are located at Different Plane, by the feed (3) and
Grounding probe (2) connection, is fed in a manner of coaxial feed.
2. a kind of compact dual-frequency PIFA antenna applied to WLAN according to claim 1, it is characterised in that: described to connect
Floor (5) and the dielectric-slab (4) are rectangular plate-like structure, and the earth plate (5) is covered in the dielectric-slab (4) bottom.
3. a kind of compact dual-frequency PIFA antenna applied to WLAN according to claim 1, it is characterised in that: the feedback
Source (3) is that 50 ohm coaxial lines of sub-miniature A connector are fed, and the grounding probe (2) is for short circuit.
4. a kind of compact dual-frequency PIFA antenna applied to WLAN according to claim 1, it is characterised in that: described
PIFA antenna is made of metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821087948.5U CN208489353U (en) | 2018-07-10 | 2018-07-10 | A kind of compact dual-frequency PIFA antenna applied to WLAN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821087948.5U CN208489353U (en) | 2018-07-10 | 2018-07-10 | A kind of compact dual-frequency PIFA antenna applied to WLAN |
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| Publication Number | Publication Date |
|---|---|
| CN208489353U true CN208489353U (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821087948.5U Expired - Fee Related CN208489353U (en) | 2018-07-10 | 2018-07-10 | A kind of compact dual-frequency PIFA antenna applied to WLAN |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962336A (en) * | 2019-03-31 | 2019-07-02 | 西安电子科技大学 | The router on-board double frequency mimo antenna of omni-directional |
| CN110600862A (en) * | 2019-09-09 | 2019-12-20 | 贵州电网有限责任公司 | Coupling feed dual-frequency PIFA antenna applied to Internet of things |
-
2018
- 2018-07-10 CN CN201821087948.5U patent/CN208489353U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962336A (en) * | 2019-03-31 | 2019-07-02 | 西安电子科技大学 | The router on-board double frequency mimo antenna of omni-directional |
| CN110600862A (en) * | 2019-09-09 | 2019-12-20 | 贵州电网有限责任公司 | Coupling feed dual-frequency PIFA antenna applied to Internet of things |
| CN110600862B (en) * | 2019-09-09 | 2021-07-06 | 贵州电网有限责任公司 | Coupling feed dual-frequency PIFA antenna applied to Internet of things |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190212 Termination date: 20200710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |