CN108847523A - Planar inverted-F antenna - Google Patents
Planar inverted-F antenna Download PDFInfo
- Publication number
- CN108847523A CN108847523A CN201810575638.6A CN201810575638A CN108847523A CN 108847523 A CN108847523 A CN 108847523A CN 201810575638 A CN201810575638 A CN 201810575638A CN 108847523 A CN108847523 A CN 108847523A
- Authority
- CN
- China
- Prior art keywords
- radiating surface
- face
- width
- antenna
- short
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
Abstract
The embodiment of the present application provides a kind of planar inverted-F antenna.In the embodiment of the present application, planar inverted-F antenna, including the short-circuit face of at least one of at least one radiating surface and corresponding connection, and on one of radiating surface of at least one radiating surface along the radiating surface feed current direction, be cut into L-type feed face.L-type feed face is easily docked with the microstrip line fed to planar inverted-F antenna, the docking efficiency of the two be can be improved, and then can optimize the port standing-wave ratio of planar inverted-F antenna, is improved the radiation efficiency of planar inverted-F antenna.
Description
Technical field
This application involves antenna technical field more particularly to a kind of planar inverted-F antennas.
Background technique
Planar inverted-F antenna (Planar Inverted-F Antenna, PIFA) is since antenna volume is small, light-weight, performance
It is superior, easy to process, low in cost, and be widely used in the hand-held terminal devices such as mobile phone.In the prior art, general right
PIFA antenna carries out grooving, folding etc. to realize smallerization of PIFA antenna.
Existing PIFA antenna is generally made of radiating surface, short-circuit face and ground plane.Feed circuit by coaxial line to
PIFA antenna feed.However, feed circuit is generally printed on pcb board in the form of microstrip line, in this way using coaxial line with
Microstrip line docking easily causes port mismatch and influences the port standing-wave ratio and radiation efficiency of antenna.
Summary of the invention
The many aspects of the application provide a kind of planar inverted-F antenna, and the feed line to improve PIFA antenna is presented with to it
The docking efficiency of the microstrip line of electricity, and then optimize the port standing-wave ratio of PIFA antenna, and improve its radiation efficiency.
The embodiment of the present application provides a kind of PIFA antenna, including：At least one radiating surface and at least one described spoke
At least one short-circuit face that the face of penetrating is correspondingly connected with；L-type feed is cut on the radiating surface A at least one described radiating surface
Face；Cut direction of the L-type feed face on the radiating surface A is consistent with the direction of feed current of the PIFA antenna.
PIFA antenna provided by the embodiment of the present application, at least including at least one radiating surface and corresponding connection
One short-circuit face, on one of radiating surface of at least one radiating surface along the radiating surface feed current direction, cutting
L-type feeds face out.L-type feed face is easily docked with the microstrip line fed to PIFA antenna, and the docking of the two can be improved
Efficiency, and then the port standing-wave ratio of planar inverted-F antenna can be optimized, improve the radiation efficiency of planar inverted-F antenna.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of the perspective view for PIFA antenna that one embodiment of the application provides；
Fig. 2 is a kind of structural schematic diagram of the front view for PIFA antenna that one embodiment of the application provides；
Fig. 3 is a kind of schematic diagram in the feed current direction for PIFA antenna that another embodiment of the application provides；
Fig. 4 is a kind of structural schematic diagram of the bottom view for PIFA antenna that another embodiment of the application provides；
Fig. 5 is a kind of structural schematic diagram of the right view for PIFA antenna that another embodiment of the application provides；
Fig. 6 is a kind of structural schematic diagram of the left view for PIFA antenna that the another embodiment of the application provides；
Fig. 7 is a kind of structural schematic diagram of the top view for PIFA antenna that the another embodiment of the application provides.
Fig. 8 is the structural schematic diagram that a kind of PIFA antenna that the another embodiment of the application provides is mounted on pcb board；
Fig. 9 is the schematic perspective view that a kind of PIFA antenna that the application another embodiment provides uses straight cutting encapsulation；
Figure 10 is a kind of port standing-wave ratio for PIFA antenna that the application another embodiment provides with the distribution map of frequency.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Aiming at the problem that coaxial line in existing PIFA antenna technology docks difficulty with microstrip line and easily causes port mismatch,
In some embodiments of the application, a kind of PIFA antenna is provided, the basic principle is that：PIFA antenna by least one radiating surface,
The short-circuit face connecting with each radiating surface and the L-type being cut on wherein radiating surface feed face are constituted, and L-type feeds face
Cut direction is consistent with the feed current direction in the radiating surface.In this way, L-type feed face easily with feed to PIFA antenna
Microstrip line is docked, and docking efficiency can be improved, and then improve the port standing-wave ratio and radiation efficiency of PIFA antenna.
Below in conjunction with attached drawing, the technical scheme provided by various embodiments of the present application will be described in detail.
It should be noted that：Identical label indicates same object in following attached drawing, therefore, once jobbie is at one
It is defined in attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is a kind of structural schematic diagram of the perspective view of PIFA antenna provided by the embodiments of the present application.As shown in Figure 1,
PIFA antenna S10 includes：At least one radiating surface 1 and at least one the short-circuit face 2 being connect at least one radiating surface 1；?
L-type feed face 3 is cut on one of radiating surface at least one radiating surface 1.Will to be cut with convenient for distinguishing and describing
The radiating surface in L-type feed face 3 is defined as radiating surface A, and L-type feeds cut direction and PIFA antenna S10 of the face 3 on radiating surface A
Feed current direction it is consistent.It is worth noting that radiating surface A is any radiating surface at least one radiating surface.
Wherein, cut direction of the L-type feed face 3 on radiating surface A is consistent with the direction of the feed current of PIFA antenna, can
Guaranteeing the cutting not influences the feed efficiency of radiating surface A.
It is worth noting that the feed current when quantity at least one radiating surface is multiple, on multiple radiating surfaces
Direction is identical.Here multiple refer to 2 or 2 or more.
Optionally, two endpoints of the intersection of L-type feed face 3 and radiating surface A and cutting L-type feed the radiating surface A behind face 3
Two sides be spaced a distance, can facilitate processing cut.
Preferably, the junction in the corresponding short-circuit face 2 of radiating surface 1 can rounding off, such as circular arc chamfering can be used
Connection structure.In this way its productibility can be improved convenient for the processing to PIFA antenna.
It should be noted that radiating surface, short-circuit face connected to it and L-type that Fig. 1 is presented feed the realization shape in face
Formula and its relative positional relationship are illustrative, and not restrictive.It should also be noted that, radiating surface in PIFA antenna
It is also all exemplary with the quantity in short-circuit face, and not restrictive.
In the present embodiment, PIFA antenna is by least one radiating surface, the short-circuit face connecting with each radiating surface and at it
In the L-type feed face that is cut on a radiating surface constitute, and the feed current side of L-type feed face cut direction and the radiating surface
To consistent.In this way, L-type feed face is easily docked with the microstrip line fed to PIFA antenna, docking efficiency can be improved, into
And the port standing-wave ratio of PIFA antenna can be optimized, and improve its radiation efficiency.
Cut direction of the above-mentioned L-type feed face 3 on radiating surface A in order to facilitate understanding, in conjunction with as shown in Figure 3 PIFA days
A kind of schematic diagram in feed current direction of line illustrates.As shown in figure 3, the quantity of at least one radiating surface is 2
It is a, it for ease of description and distinguishes, the radiating surface on upper layer is defined as the first radiating surface 1a, by the radiating surface close apart from ground plane 4
It is defined as the second radiating surface 1b；Correspondingly, the short-circuit face connecting with the first radiating surface 1a is defined as the first short circuit face 2a, it will be with
The short-circuit face of second radiating surface 1b connection is defined as the second short circuit face 2b.In this way, at a time when, the direction of feed current can
To flow to the first short circuit face 2a from the first radiating surface 1a, ground plane 4 is passed through, after flowing to the second short circuit face 2b, again passes through second
Radiating surface 1b.The radiating surface A for being cut into L-type feed face 3 can be the second radiating surface 1b, then the direction of L-type feed 3 cutting line of face is
Sense of current in second radiating surface 1b, i.e., the parallel direction of the second radiating surface 1b upward arrow as shown in Figure 3.
It is worth noting that ground plane 4 shown in Fig. 3 can be PIFA antenna a part, can also be laid on
On the pcb board of PIFA antenna connection.Optionally, ground plane 4 is metal layer, such as copper foil, aluminium foil etc., and however, it is not limited to this.
Optionally, as shown in Figure 1, L-type feed face 3 can be located at the intersection institute in L-type feed face 3 and radiating surface A on radiating surface A
Side center, for ease of description and distinguish, will radiating surface A on L-type feed face 3 and radiating surface A intersection where
When being defined as the first of radiating surface A, the first side is vertical with the feed current direction of radiating surface A.L-type feed face 3 can be located at spoke
The center on the first side of face A is penetrated, so that two sides of the fluting formed behind L-type feed face 3 are cut on radiating surface A
Width is the same, and then can make on two sides of fluting that feed-in electric current is equal, reduces PIFA antenna directional during installation
It is required that improving convenience when installation.It optionally, is in Fig. 1 respectively as shown in Figure 1, L-type feed bread contains two sub- planes
Shown in first feedback electronic plane 3a and second feedback electronic plane 3b.L-type feeds the first feedback electronic plane 3a in face 3 along radiating surface
The first side of A extends downward into the ground terminal at least one short-circuit face 2 (for connecting with ground plane at least one short-circuit face 2
One end) where at horizontal plane, and the second feedback electronic plane 3b is since the first feedback end electronic plane 3a in the horizontal plane
On the plane extended.The horizontal plane is plane shown by label 4 in Fig. 1.Second feedback electronic plane 3a is on horizontal plane 4
Extend, it is convenient to be docked with the microstrip line fed to the PIFA antenna S10.
Correspondingly, it is illustrated in figure 4 the structural schematic diagram of the bottom view of PIFA antenna S10.From figure 2 it can be seen that the
Two feedback electronic plane 3b are located in the plane at 4 place of horizontal plane.
It is worth noting that in the embodiment of the present application, L-type feed face is not limited to the first feedback electronic plane 3a and second
Electronic plane 3b situation connected vertically is presented, also includes the two with the class L of the formation such as obtuse angle or acute angle connection, rounding off connection
The case where type, and it is collectively referred to as L-type feed face.
Correspondingly, the structural representation of the front view of the PIFA antenna shown in Fig. 2 is shown in the drawings feeds face for L-type
In first feedback electronic plane 3a and second feedback electronic plane 3b can rounding off.For example, the two can be using circular arc chamfering
Connection structure.Consumption of the junction to the energy of feed-in PIFA antenna can be reduced in this way, and then can be cut convenient for feeding face to L-type
Processing is cut, its productibility is improved.
Further, for first feedback electronic plane 3a for, at 4 first height of horizontal plane from the first width inclined-plane
Transit to the second width, then extended downward at horizontal plane 4 with the second width, backward horizontal plane 4 direction fold, and
Extend the second feedback electronic plane 3b on horizontal plane 4, the width of the second feedback electronic plane 3b is the second width.Alternatively, the first feedback
The width of electronic plane 3a remains the first width, and is extended downward at horizontal plane 4 with the first width, backward horizontal plane 4
Direction fold, and extend the second feedback electronic plane 3b on horizontal plane 4, which presents in distance first
From the first width chamfered transition to the second width at the end first distance of electronic plane 3a.Wherein, the second width is less than first
Width.In this way, L-type feed face is cut with the width (the second width) for docking place of the microstrip line fed to PIFA antenna S10
To being adapted with the width of microstrip line, can be docked convenient for L-type feed face with microstrip line.Preferably, (second is wide for the width at docking
Degree) it can be equal with the width of microstrip line fed to PIFA antenna S10.
In an alternative embodiment, PIFA antenna in addition to comprising at least one above-mentioned radiating surface 1 and at least one spoke
It penetrates except the short-circuit face 2 that face 1 is correspondingly connected with, further includes ground plane.
It is worth noting that above-mentioned horizontal plane 4 is where ground plane for the PIFA antenna for including ground plane
Above-mentioned horizontal plane and ground plane for ease of description, are carried out unified mark since plane where the two is same plane by plane
Number, i.e., shown in Fig. 1 in label 4, in the PIFA antenna for including ground plane be ground plane 4.
Optionally, ground plane 4 can be parallel at least one radiating surface 1, and vertical at least one short-circuit face, is convenient for PIFA
The production of antenna and later period installation.For example, if when the quantity of at least one radiating surface is 1, ground plane and unique radiating surface
In parallel；If the quantity of at least one radiating surface is 2, ground plane and two radiating surfaces are all parallel, that is to say, that two radiation
Face is also arranged in parallel.
Correspondingly, when at least one radiating surface is 1, the corresponding short-circuit face of radiating surface, radiating surface and ground plane are in
Inverted U-shaped structure.Then, L-type feed face 3 can be cut into close to the side of the opening of inverted U-shaped structure on the radiating surface.
Further, when at least one radiating surface is 2, for the PIFA antenna shown in Fig. 1,2 radiating surfaces are
First radiating surface 1a and the second radiating surface 1b, optionally, the above-mentioned radiating surface A for being cut into L-type feed face 3 is the second radiating surface
1b.It can be obtained from the structural schematic diagram of the front view of PIFA antenna S10 shown in Fig. 2：First radiating surface 1a, the first radiating surface 1a
Corresponding short circuit face 2a and the inverted u-shaped structure of ground plane 4, the second radiating surface 1b short circuit face 2b corresponding with the second radiation face 1b
It is of an L-shaped structure, and L-type structure is set to the intracavitary of U-shaped structure, the corresponding short circuit face 2b of the second radiating surface 1b is located at U-shaped structure
Open side.This folding structure can reduce the volume of PIFA antenna.
Further, the height of the corresponding short circuit face 2a of the first radiating surface 1a is greater than the corresponding short circuit face 2b of the second radiating surface 1a
Height, in this way, the intracavitary of U-shaped structure can be set to above-mentioned L-type structure.
Further, the length of the first radiating surface 1a is greater than the length of the second radiating surface 1b, in this way for as shown in Figure 1
For PIFA antenna S10, it can avoid the second radiating surface 1b and be in contact with the first short circuit face 2a, avoid breaking down when feed.
Optionally, in order to further reduce the volume of PIFA antenna S10, the length of ground plane 4 can be greater than or equal to first
The length of radiating surface 1a.
Correspondingly, as shown in Figure 1, opening up the U-type groove that can accommodate L-type feed face 3 on ground plane 4, it is logical that L-type feeds face 3
It crosses U-type groove and is connect with the microstrip line fed to PIFA antenna S10.The bottom view of the structure of U-type groove PIFA antenna as shown in Figure 4
Structural representation it is as shown in the figure.Wherein, the width of U-type groove is greater than the maximum width of the second feedback electronic plane 3b in L-type feed face 3
Degree.That is, for the case where width of the second feedback electronic plane 3b in above-mentioned L-type feed face 3 is the second width, U-type groove
Width be greater than the second width；Width for the second feedback electronic plane 3b in above-mentioned L-type feed face 3 is from the first width inclined-plane
For the case where transitting to the second width, the width of U-type groove is greater than the first width.
Optionally, the middle line that the middle line of the U-type groove can feed the second feedback electronic plane 3b in face 3 with L-type is overlapped.
Optionally, as shown in Figure 1, the short-circuit faces of two sons of cutting formation, two sons are short on the corresponding short-circuit face radiating surface A
Road surface is connect with two sides of the U-type groove, and two sides of width and U-type groove in the short-circuit face of two sons is of same size；Two
The width of spacing, U-type groove between height short circuit face is equal with the width of fluting that L-type feed face is formed is cut on radiating surface A.
In this way, the structural schematic diagram of the right view of PIFA antenna S10 as shown in figure 5, can make PIFA antenna symmetrical structure, reduces PIFA
The requirement of antenna directional during installation improves convenience when installation.
Correspondingly, the structural schematic diagram of the left view of PIFA antenna S10 and top view difference is as shown in Figure 6 and Figure 7.
In another alternative embodiment, above-mentioned PIFA antenna S10 can be an integral molding structure.It optionally, can be by one block of gold
Category piece is folded accordingly and cutting obtains above-mentioned PIFA antenna S10.To include the first radiating surface 1a and the second radiating surface 1b
For the PIFA antenna of two radiating surfaces, the folding of one piece of sheet metal can be sequentially formed to the first radiating surface 1a, first short twice
Road surface 2a, the 4, second short circuit face 2b and the second radiating surface 1b of ground plane；Later, cutting is carried out to the second short circuit face 1b and forms L
Type feeds face 3, correspondingly, ground plane 4 is cut into the U-type groove that can accommodate L-type feed face 3, and the second short circuit face 2b is cut
At the short-circuit face of two sons.In this way, can not have to weld the junction of each component parts in PIFA antenna S10, can reduce
The loss of antenna improves the radiation efficiency of PIFA antenna, while being convenient for the processing and subsequent installation of PIFA antenna, and improving it can give birth to
Production property.
Fig. 8 is the structural schematic diagram that a kind of PIFA antenna that one embodiment of the application provides is mounted on pcb board.It is optional
Ground, Surface Mount mode can be used in PIFA antenna S10 or straight cutting mode is installed on pcb board 5, prints on the pcb board oriented PIFA days
The microstrip line 6 of line S10 feed.Wherein, the second feedback electronic plane 3b and microstrip line 6 in L-type feed face 3 are electrically connected.
For PIFA antenna is installed on pcb board using straight cutting mode, it can feed in L-type and be set on face 3 and ground plane 4
Direct pin 7 is set, structural schematic diagram is as shown in Figure 9.
It is worth noting that in the embodiment of the present application, the realization of radiating surface, short-circuit face, L-type feed face and ground plane
Type of attachment etc. between structure and size, shape, quantity and each section will affect PIFA antenna covered signal
Frequency, bandwidth and radiation efficiency.Based on this, when designing PIFA antenna, can flexibly be set according to the application of PIFA antenna
Set realization structure and size, shape etc. of radiating surface, short-circuit face, L-type feed face and ground plane, in the hope of with application and institute
The equipment depended on is adapted.
The phases such as realization structure and size, shape of radiating surface, short-circuit face, L-type feed face and ground plane in order to facilitate understanding
The influence relationship between parameter, with frequency required by application is closed, below in omnidirectional antenna covering people's daily life
For the wifi frequency range of 2.4GHz used, and it is directed to the PIFA antenna comprising 2 radiating surfaces, these relevant parameters are shown
Example property explanation.
Optionally, the length of the first radiating surface 1a and ground plane 4 is 17.5mm, width 5mm；Second radiating surface 1b length
For 15.2mm, width 5mm；The length for the first short circuit face 2a connecting with the first radiating surface 1a is 8.5mm, width 5mm；With
The length of second short circuit face 2b of the second radiating surface 1b connection is 4.6mm, width 1mm；The width that L-type feeds face is 2mm, high
Degree is 4.6mm.
Further, for the ease of connecting with 1mm wide microstrip line, can feed height of the face 3 apart from ground plane 4 in L-type is 1mm
Place, is transitioned into 1mm width from 2mm width using linear slope.Optionally, it is connected to for the ease of microstrip line and L-type feed face 3
Width 3mm, the rectangle of length 6.5mm and the semicircle of radius 1.5mm, i.e. U-type groove in ground plane 4 are cut out on ground plane 4.
Further, the metal thickness of PIFA antenna can be 0.5mm.
Further, each junction between radiating surface, short-circuit face, L-type feed face and ground plane uses chamfering for 0.5mm
Circular arc carry out rounding off.
Illustrate herein, above-mentioned numerical value is the more excellent numerical value that inventor passes through that creative work proposes, but is not limited to these
Numerical value.On the basis of above-mentioned each numerical value, the numberical range obtained by fine tuning, if can satisfy application demand, also at this
Apply within embodiment protection scope.For example, for the length of the second radiating surface 1b, it is fine-tuned after numberical range 14mm-
16mm, correspondingly, can be according to PIFA antenna need after the length adjustment of the second radiating surface 1b also within the application protection scope
The size of the first radiating surface 1a, the size of the first short circuit face 2a and the second short-circuit face is adaptively adjusted in the band requirement to be covered
The length scale of the first radiating surface 1a is 16mm-19mm after size and the size of ground plane 4 of 2b etc., such as adjustment
Deng, it is also possible to it is adapted to out other numberical ranges.It should be noted that these numberical ranges are only exemplary, and not restrictive
, as long as being only adjusted to the size of each component using the structure of above-mentioned PIFA antenna, then also protected in the embodiment of the present application
Within the scope of shield.
In antenna technical field, the performance of antenna is generally measured using the port standing-wave ratio of antenna, radiation efficiency etc..Its
In, standing-wave ratio is used to indicate whether antenna and wave transmission platform match.It is optimal feelings if the value of standing-wave ratio is equal to 1
Condition, the electric wave for indicating that transmitting is transferred to antenna do not have any reflection, all radiate；If standing wave ratio is greater than 1, then it represents that
Some electric wave is reflected back, and ultimately becomes heat, so that feed line heats up.When general standing-wave ratio is less than 2, then has and be greater than
88.89% electric wave can be radiated.Based on this, generally require the standing-wave ratio of antenna less than 2.
Radiation efficiency refers to the power (i.e. the effectively power of converted electromagnetic wave part) and be input to that aerial radiation is gone out
The ratio between active power of antenna, radiation efficiency is bigger, then the energy consumption of representative antennas is smaller, and performance is better.
Include two radiating surfaces based on above-mentioned PIFA antenna, covers the wifi frequency of 2.4GHz used in people's daily life
The example of section, obtains the port standing-wave ratio of PIFA antenna as shown in Figure 10 with the distribution map of frequency.It can be obtained from Figure 10, PIFA days
Standing-wave ratio of the line in frequency 2.32GHz and 2.55GHz be 2, therefore, PIFA antenna in the frequency range of 2.32GHz-2.55GHz,
The standing-wave ratio better than 2 (numerical value is less than 2) can be achieved.Moreover, as shown in Figure 10, label m1 and m2 respectively indicates frequency and is
2.40GHz and 2.48GHz, PIFA antenna are respectively 1.2389 and 1.3574 in the standing-wave ratio of frequency 2.40GHz and 2.48GHz,
Therefore, the PIFA antenna in the frequency range of 2.4GHz-2.48GHz, it can be achieved that be better than 1.5 (numerical value is less than 1.5) standing-wave ratio, end
Mouth standing-wave ratio is good.
On the other hand, simulating, verifying is carried out to the radiation efficiency of above-mentioned PIFA antenna, obtains omnidirectional antenna under each frequency
Radiation efficiency, as shown in table 1 below：
Table 1
It can to sum up obtain, when the quantity of radiating surface is 2, to radiating surface, short-circuit face, L-type feed face and ground plane
It is appropriately designed to realize that structure and size, shape etc. carry out, realizes the wifi signal covering of 2.4GHz-2.48GHz.The present embodiment
Good, the PIFA antenna that docks matching degree of L-type feed face in provided PIFA antenna and microstrip line that it is fed
2.4GHz-2.48GHz frequency range radiation efficiency up to 97% or more.
It should be noted that the description such as " first " herein, " second ", is for distinguishing different message, equipment, mould
Block etc. does not represent sequencing, does not also limit " first " and " second " and is different type.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of planar inverted-F antenna, which is characterized in that including：At least one radiating surface and at least one described radiating surface
The short-circuit face of at least one being correspondingly connected with；L-type feed face is cut on the radiating surface A at least one described radiating surface；Institute
It is consistent with the direction of the feed current of the planar inverted-F antenna to state cut direction of the L-type feed face on the radiating surface A.
2. planar inverted-F antenna according to claim 1, which is characterized in that L-type feed face is the radiating surface A's
The center on the first side, described first when being one vertical with the direction of the feed current.
3. planar inverted-F antenna according to claim 2, which is characterized in that L-type feed face includes that the first feed is flat
Face and the second feedback electronic plane, the first feedback electronic plane extend downward at least one described short circuit along the radiating surface A
Where the ground terminal in face at horizontal plane, the second feedback electronic plane is since the sub- planar end of first feed described
The plane extended on horizontal plane.
4. planar inverted-F antenna according to claim 3, which is characterized in that the first feedback electronic plane is described in
From the first width chamfered transition to the second width at first height of horizontal plane, the width of the second feedback electronic plane is described
Second width；Or
The width of the first feedback electronic plane is first width, and the second feedback electronic plane is apart from first feedback
From the first width chamfered transition to second width at the end first distance of electronic plane；
Wherein, second width is less than first width.
5. described in any item planar inverted-F antennas according to claim 1, which is characterized in that further include：Ground plane；It is described at least
One short-circuit face is fixedly connected with the ground plane, and the ground plane is parallel at least one described radiating surface, and with it is described
At least one short-circuit face is vertical.
6. planar inverted-F antenna according to claim 5, which is characterized in that when at least one described radiating surface is 1,
The corresponding short-circuit face of the radiating surface, the radiating surface and the inverted u-shaped structure of the ground plane.
7. planar inverted-F antenna according to claim 5, which is characterized in that when at least one described radiating surface includes first
When radiating surface and the second radiating surface, the corresponding short-circuit face of first radiating surface, first radiating surface and the ground plane
Inverted u-shaped structure, second radiating surface short-circuit face corresponding with second radiating surface is of an L-shaped structure, and the L-type structure
Set on the intracavitary of the U-shaped structure, opening of the corresponding short-circuit face of second radiating surface close to the U-shaped structure；Wherein, institute
Stating radiating surface A is second radiating surface.
8. planar inverted-F antenna according to claim 7, which is characterized in that the L-type can be accommodated by opening up on the ground plane
The U-type groove in feed face is connected by the U-type groove with the microstrip line fed to the planar inverted-F antenna so that the L-type feeds face
It connects.
9. planar inverted-F antenna according to claim 8, which is characterized in that the radiating surface A is cut on corresponding short-circuit face
The short-circuit face of two sons is formed, described two short-circuit faces of son are connect with two sides of the U-type groove respectively, and of same size；Institute
It states to cut the L-type on the width and the radiating surface A of the spacing between two short-circuit faces of son, the U-type groove and feed face and be formed
Fluting width it is equal.
10. -9 described in any item planar inverted-F antennas according to claim 1, which is characterized in that the planar inverted-F antenna is one
Forming structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575638.6A CN108847523A (en) | 2018-06-06 | 2018-06-06 | Planar inverted-F antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810575638.6A CN108847523A (en) | 2018-06-06 | 2018-06-06 | Planar inverted-F antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108847523A true CN108847523A (en) | 2018-11-20 |
Family
ID=64210349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810575638.6A Pending CN108847523A (en) | 2018-06-06 | 2018-06-06 | Planar inverted-F antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108847523A (en) |
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 |
| WO2021135389A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳Tcl数字技术有限公司 | Antenna system and electronic device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060181475A1 (en) * | 2005-02-16 | 2006-08-17 | Samsung Electronics Co., Ltd. | UWB antenna with unidirectional radiation pattern |
| WO2008156429A1 (en) * | 2007-06-19 | 2008-12-24 | Agency For Science, Technology And Research | Broadband antenna for wireless communications |
| CN104157971A (en) * | 2014-08-19 | 2014-11-19 | 哈尔滨工业大学 | PIFA antenna with double-layer mushroom-type EBG structure being as ground plate and in capacitor structure |
| CN104979633A (en) * | 2015-05-20 | 2015-10-14 | 广东欧珀移动通信有限公司 | Antenna system and communication terminal applying antenna system |
| CN105591192A (en) * | 2015-12-25 | 2016-05-18 | 惠州硕贝德无线科技股份有限公司 | Two-in-one SAR reduction antenna structure |
| CN107076424A (en) * | 2013-12-12 | 2017-08-18 | 伊莱克斯家用电器股份公司 | Household electrical appliance, household electrical appliance arrangement and cooking system |
-
2018
- 2018-06-06 CN CN201810575638.6A patent/CN108847523A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060181475A1 (en) * | 2005-02-16 | 2006-08-17 | Samsung Electronics Co., Ltd. | UWB antenna with unidirectional radiation pattern |
| WO2008156429A1 (en) * | 2007-06-19 | 2008-12-24 | Agency For Science, Technology And Research | Broadband antenna for wireless communications |
| CN107076424A (en) * | 2013-12-12 | 2017-08-18 | 伊莱克斯家用电器股份公司 | Household electrical appliance, household electrical appliance arrangement and cooking system |
| CN104157971A (en) * | 2014-08-19 | 2014-11-19 | 哈尔滨工业大学 | PIFA antenna with double-layer mushroom-type EBG structure being as ground plate and in capacitor structure |
| CN104979633A (en) * | 2015-05-20 | 2015-10-14 | 广东欧珀移动通信有限公司 | Antenna system and communication terminal applying antenna system |
| CN105591192A (en) * | 2015-12-25 | 2016-05-18 | 惠州硕贝德无线科技股份有限公司 | Two-in-one SAR reduction antenna structure |
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 |
| WO2021135389A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳Tcl数字技术有限公司 | Antenna system and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI489690B (en) | Multi-band planar inverted-f (pifa) antennas and systems with improved isolation | |
| CN105896091A (en) | Miniaturized broadband high-gain circular polarized microstrip antenna | |
| CN107528115A (en) | A kind of differential feed dual polarization vibrator component, oscillator unit and element antenna | |
| CN102396110A (en) | Broadband antenna using coupling matching with short-circuited end of radiator | |
| CN100431219C (en) | Broadband suspended plate antenna with multi-point feed | |
| US20080122702A1 (en) | Multiband antenna | |
| CN102377016A (en) | High-gain loop array antenna system and electronic device with same | |
| CN108847523A (en) | Planar inverted-F antenna | |
| CN205016662U (en) | PIFA antenna suitable for GSM900 frequency channel and bluetooth frequency channel | |
| JP2004201265A (en) | Planar inverted f antenna | |
| CN212648490U (en) | Dual-band antenna and IOT equipment | |
| CN207233933U (en) | Wideband dual polarized electromagnetic dipole antenna | |
| CN105811087B (en) | Paster antenna and laptop | |
| CN208608358U (en) | A kind of monopole ultra-wideband antenna | |
| CN206992300U (en) | The double-polarized printed dipole antenna in uhf band ultra wide band ± 45 ° | |
| CN102800953B (en) | Indirect feed type omnidirectional printed antenna with radiant load | |
| CN206451817U (en) | Has the wide frequency antenna of T-shaped loop structure | |
| US11677149B2 (en) | Multi-band antenna | |
| CN106558753A (en) | A kind of PIFA antennas suitable for GSM900 frequency ranges and Bluetooth band | |
| CN205069862U (en) | Printing antenna of falling F suitable for bluetooth communication | |
| CN101388488A (en) | Planar double-frequency antenna | |
| CN203491387U (en) | Bridge antenna and antenna system | |
| CN202737084U (en) | Substrate structure | |
| CN102117956A (en) | Dual-frequency antenna | |
| CN105762496A (en) | Antenna structure for increasing gain of antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181120 |