CN108899634A - A kind of IFA antenna and communication equipment - Google Patents
A kind of IFA antenna and communication equipment Download PDFInfo
- Publication number
- CN108899634A CN108899634A CN201810591799.4A CN201810591799A CN108899634A CN 108899634 A CN108899634 A CN 108899634A CN 201810591799 A CN201810591799 A CN 201810591799A CN 108899634 A CN108899634 A CN 108899634A
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- Prior art keywords
- arm
- inverse
- antenna
- foot
- antenna body
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Classifications
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- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
Abstract
The invention discloses a kind of IFA antenna and communication equipments, wherein the IFA antenna includes the first inverse-F antenna body, the second inverse-F antenna body, neutralizes arm, the first feed foot, the second feed foot, the first short-circuit foot and the second short-circuit foot；First inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and be connected on the one end for neutralizing arm；Second inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and be connected on the other end for neutralizing arm；First feed foot is used to feed to the first inverse-F antenna body；Second feed foot is used to feed to the second inverse-F antenna body；First short-circuit foot is for making the first inverse-F antenna body impedance matching；Second short-circuit foot is for making the second inverse-F antenna body impedance matching.The present invention enables to that the size of the entire antenna of communication equipment becomes smaller, isolation is got higher and working frequency range increases.
Description
Technical field
The present invention relates to antenna technical fields, more particularly, to a kind of IFA antenna and communication equipment.
Background technique
Currently, major part minimizes WIFI days of communication equipment (such as smart phone or USB wireless network card etc.) on the market
Line is typically provided two-way and is microstrip antenna.Wherein, since the size of the microstrip antenna of this two-way is bigger, meeting in this way
So that the size of the entire antenna of communication equipment is also bigger.Also, since sky is installed in the inside of these miniaturization communication equipments
Between limitation, the spacing between this two-way WIFI antenna generally can be smaller, such that between this two-way WIFI antenna
Isolation is relatively low.In addition, this two-way WIFI antenna is all single-band antenna so that the entire antenna of communication equipment can
Working frequency range is fewer.
Summary of the invention
In view of the above-mentioned problems, enabling to communicate the purpose of the present invention is to provide a kind of IFA antenna and communication equipment
The size of the entire antenna of equipment becomes smaller, isolation is got higher and working frequency range increases.
To achieve the goals above, one embodiment of the invention provides a kind of IFA antenna comprising：First inverse-F antenna
Body, the second inverse-F antenna body neutralize arm, the first feed foot, the second feed foot, the first short-circuit foot and the second short-circuit foot；
The first inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and it is connected to the arm that neutralizes
On one end；The second inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and be connected to and described neutralize the another of arm
On one end；
The first feed foot is extended outward by the neutralization arm or the first inverse-F antenna body, and for institute
State the first inverse-F antenna body feed；
The second feed foot is extended outward by the neutralization arm or the second inverse-F antenna body, and for institute
State the second inverse-F antenna body feed；
Described first short-circuit foot is extended outward by the neutralization arm or the first inverse-F antenna body, and for making institute
State the first inverse-F antenna body impedance matching；
Described second short-circuit foot is extended outward by the neutralization arm or the second inverse-F antenna body, and for making institute
State the second inverse-F antenna body impedance matching.
As an improvement of the above scheme, the first feed foot and the first short-circuit foot are by described in the neutralization arm
One end extends out outward；
The second feed foot and the second short-circuit foot are extended out outward by the other end for neutralizing arm；
Described first short-circuit foot and the second short-circuit foot are located at both the first feed foot and the second feed foot
Between.
As an improvement of the above scheme, the first feed foot, the second feed foot, the first short-circuit foot and described
Second short-circuit foot extends out toward the direction of the bottom of the IFA antenna, and four extending end is located at same water
In plane.
As an improvement of the above scheme, further include：
First support leg, from the first inverse-F antenna body far from the position for neutralizing arm toward the IFA antenna
The direction of bottom extends out；And
Second support leg, from the second inverse-F antenna body far from the position for neutralizing arm toward the IFA antenna
The direction of bottom extends out.
As an improvement of the above scheme, the neutralization arm is bending structure.
As an improvement of the above scheme, the first inverse-F antenna body includes：
First radiation arm, for transmitting and receiving the first frequency band signals and be connected to it is described neutralize arm described one end on；
And
Second radiation arm, for transmitting and receiving the second frequency band signals and be connected to it is described neutralize arm described one end on；
The second inverse-F antenna body includes：
Third radiation arm, for transmitting and receiving third frequency band signals and be connected to it is described neutralize arm the other end
On；And
4th radiation arm, for transmitting and receiving the 4th frequency band signals and be connected to it is described neutralize arm the other end
On.
As an improvement of the above scheme, first radiation arm and the third radiation arm are longer than second radiation arm
With the 4th radiation arm, and first radiation arm and the third radiation arm are bending structure.
As an improvement of the above scheme, first radiation arm is opposite up and down with second radiation arm and interval is arranged,
The third radiation arm and the 4th radiation arm relatively and are spaced setting up and down, and four are respectively positioned on the same of the neutralization arm
Side；
First radiation arm is opposite with the third radiation arm, and first radiation arm and the third radiation arm are past
Region bending between the two.
As an improvement of the above scheme, first frequency band signals and the third frequency band signals are 2.4G frequency range letter
Number；
Second frequency band signals and the 4th frequency band signals are 5G frequency band signals.
Another embodiment of the present invention provides a kind of communication equipments, including IFA antenna described in either a program as above.
Compared with the prior art, the IFA antenna and communication equipment provided in an embodiment of the present invention have below beneficial to effect
Fruit：
1, by the way that the first inverse-F antenna body and the second inverse-F antenna body to be connected on the both ends for neutralizing arm,
The neutralization arm described in this way is capable of providing the opposite coupling circuit of the two antenna body coupling paths, can be improved the two antenna bodies
Between isolation；And the neutralization arm enables to while guaranteeing the two antenna bodies isolation with higher
Spacing between the two antenna bodies becomes smaller, so that the size of entire antenna becomes smaller；
2, since the first inverse-F antenna body and the second inverse-F antenna body can emit and receive at least two frequencies
Segment signal can make the working frequency range of the entire antenna of the communication equipment increase in this way；
3, since the first inverse-F antenna body and the second inverse-F antenna body are inverse-F antenna, and the antenna of inverted f type
Size can be smaller so that the size for stating the entire antenna of communication equipment becomes smaller；
4, since the first inverse-F antenna body and the second inverse-F antenna body can emit and receive at least two frequencies
Segment signal, i.e., the described first inverse-F antenna body and the second inverse-F antenna body all have at least two for work in special frequency channel
The radiation arm of signal, and at least two radiation arms of the first inverse-F antenna body share the first feed foot and the first short-circuit foot, institute
At least two radiation arms for stating the first inverse-F antenna body share the second feed foot and the second short-circuit foot, so that the communication is set
The feeding point and short dot small number of standby entire antenna, so that the size of the entire antenna of the communication equipment becomes
It is small；
5, the described first short-circuit foot and the second short circuit foot can also change the first inverse-F antenna body and described respectively
The current path of second inverse-F antenna body, enables to the length of the radiation arm of the two antenna bodies to shorten, so that logical
Believe that the size of the entire antenna of equipment becomes smaller.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of IFA antenna provided in an embodiment of the present invention；
Fig. 2 is a kind of perspective view of IFA antenna provided in an embodiment of the present invention；
Fig. 3 is the return loss test chart of the first inverse-F antenna body of the IFA antenna of the embodiment of the present invention；
Fig. 4 is the return loss test chart of the second inverse-F antenna body of the IFA antenna of the embodiment of the present invention；
Fig. 5 is the isolation degree test figure of both the first inverse-F antenna body and the second inverse-F antenna body.
Description of symbols：1. the first inverse-F antenna body；10. the first radiation arm；11. the second radiation arm；2. the second inverted f day
Wire body；20. third radiation arm；21. the 4th radiation arm；In 3. and arm；4. the first feed foot；5. the second feed foot；6. first is short
Road foot；7. the second short-circuit foot；8. the first support leg；9. the second support leg.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the embodiment of the present invention, it is to be understood that the side of the instructions such as term " on ", "lower", "top", "bottom"
Position or positional relationship are to be merely for convenience of the description embodiment of the present invention based on attached orientation or positional relationship shown in FIG. 1, without
It is that the device of indication or suggestion meaning or component must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as the limitation to the embodiment of the present invention.
Referring to Figure 1 with Fig. 2, one embodiment of the invention provides a kind of IFA antenna, mentions applied to the embodiment of the present invention
In a kind of communication equipment supplied, it is particularly applied in the communication equipment of miniaturization, such as smart phone or USB wireless network card
Deng.The IFA antenna includes：First inverse-F antenna body 1, the second inverse-F antenna body 2 neutralize the feed feed of foot 4, second of arm 3, first
The short-circuit foot 6 of foot 5, first and the second short-circuit foot 7.
In the present embodiment, the first inverse-F antenna body 1 is inverse-F antenna (can be plane or solid type), for sending out
At least two frequency band signals are penetrated and received, and are connected on described one end for neutralizing arm 3.Specifically, the first inverse-F antenna body
1 has at least two radiation arms, and one kind is specific frequently for transmitting and receiving for each radiation arm of the first inverse-F antenna body 1
The working frequency range signal of segment signal, each radiation arm of the first inverse-F antenna body 1 is different (can certainly be identical).It is described
Second inverse-F antenna body 2 is inverse-F antenna (can be plane or solid type), and at least two frequency ranges are believed for transmitting and receiving
Number, and be connected on the other end for neutralizing arm 3.Specifically, the second inverse-F antenna body 2 has at least two radiation arms,
A kind of each radiation arm of the second inverse-F antenna body 2 specific frequency band signals for transmitting and receiving, second inverted f day
The working frequency range signal of each radiation arm of wire body 2 is different (can certainly be identical).It should be noted that first inverted f
Antenna body 1 and the working frequency range signal of the second inverse-F antenna body 2 can be the same or different.
In the present embodiment, the first feed foot 4 is from the 3 or described first inverse-F antenna body 1 of neutralization arm to extension
It stretches, and for being fed to the first inverse-F antenna body 1.The second feed foot 5 is by the neutralization arm 3 or described second
Inverse-F antenna body 2 extends outward, and for feeding to the second inverse-F antenna body 2.
In the present embodiment, the described first short-circuit foot 6 is from the 3 or described first inverse-F antenna body 1 of neutralization arm to extension
It stretches, and for making 1 impedance matching of the first inverse-F antenna body.Described second short-circuit foot 7 is by the neutralization arm 3 or described
Second inverse-F antenna body 2 extends outward, and for making 2 impedance matching of the second inverted f antenna body.It should be noted that
First inverted f day can be realized by adjusting the setting position of both the described first short-circuit foot 6 and the first feed foot 4
The impedance matching of wire body 1, can by adjust the setting position of both the described second short-circuit foot 7 and described second feed foot 5 come
Realize the impedance matching of the second inverse-F antenna body 2.
In the present embodiment, when the IFA antenna needs to be mounted on a circuit substrate of the communication equipment, by institute
State the first feed foot 4, the second feed foot 5, the first short-circuit foot 6 and the second short-circuit foot 7 four and the circuit
Substrate is connected and fixed, and this can support the IFA antenna on the circuit substrate.
The present embodiment has the advantages that：
1, by the way that the first inverse-F antenna body 1 and the second inverse-F antenna body 2 are connected to the both ends for neutralizing arm 3
On, the neutralization arm 3 described in this way is capable of providing the opposite coupling circuit of the two antenna body coupling paths, can be improved the two days
Isolation between wire body；And the neutralization arm 3, can while guaranteeing the two antenna bodies isolation with higher
So that the spacing between the two antenna bodies becomes smaller, so that the size of entire antenna becomes smaller；
2, since the first inverse-F antenna body 1 and the second inverse-F antenna body 2 can emit and receive at least two
Frequency band signals can make the working frequency range of the entire antenna of the communication equipment increase in this way；
3, since the first inverse-F antenna body 1 and the second inverse-F antenna body 2 are inverse-F antenna, and reversed F-typed antenna
Size can be smaller so that the size for stating the entire antenna of communication equipment becomes smaller；
4, since the first inverse-F antenna body 1 and the second inverse-F antenna body 2 can emit and receive at least two
Frequency band signals, i.e., the described first inverse-F antenna body 1 and the second inverse-F antenna body 2 all have at least two for work specific
The radiation arm of frequency band signals, and at least two radiation arms of the first inverse-F antenna body 1 share the first feed foot 4 and first short
Road foot 6, at least two radiation arms of the first inverse-F antenna body 1 share the second feed foot 5 and the second short-circuit foot 7, so that
The feeding point and short dot small number of the entire antenna of the communication equipment, so that the entire day of the communication equipment
The size of line becomes smaller；
5, the described first short-circuit foot 6 and the described second short-circuit foot 7 can also change respectively the first inverse-F antenna body 1 and
The current path of the second inverse-F antenna body 2, enables to the length of the radiation arm of the two antenna bodies to shorten, so as to
So that the size of the entire antenna of communication equipment becomes smaller.
For the ease of the understanding to the present embodiment, Fig. 1 to Fig. 2 is combined to carry out the embodiment of the present invention IFA antenna herein
Illustrate in greater detail below：
Specifically, referring to Figure 1 with Fig. 2, the first feed foot 4 and the first short-circuit foot 6 are by the neutralization arm 3
Described one end extend out outward；The second feed foot 5 and the second short-circuit foot 7 are by described in the neutralization arm 3
The other end extends out outward；The first short-circuit foot 6 and the second short-circuit foot 7 are located at the first feed foot 4 and described
Second feed foot 5 is between the two.Wherein, the first feed foot 4 and the first short-circuit foot 6 are respectively positioned on the neutralization arm 3
The one end (the i.e. described first feed foot 4 is disposed adjacent with described first short-circuit 6 the two of foot), can make described first in this way
The impedance matching of inverse-F antenna body 1.The second feed foot 5 and the second short-circuit foot 7 are respectively positioned on the described of the neutralization arm 3
The other end (the i.e. described second feed foot 5 is disposed adjacent with described second short-circuit 7 the two of foot), can make described second to fall in this way
The impedance matching of F antenna body 2.Further, since this four feet are respectively arranged at the both ends for neutralizing arm 3, and two antenna bodies
The both ends for neutralizing arm 3 are connected to, the compact-sized and smaller of the IFA antenna can be made in this way.
In the above-described embodiments, illustratively, referring to Figure 1 with Fig. 2, the first feed foot 4, described second feed foot
5, the described first short-circuit foot 6 and the second short-circuit foot 7 four extend out toward the direction of the bottom of the IFA antenna, this
For sample when the IFA antenna is mounted on a circuit substrate of communication equipment, this four feet can effectively support the IFA
Antenna, and guarantee that two above-mentioned antenna bodies and the circuit substrate have definitely spacing.Preferably, the length of this four feet
Spend identical, and the extending end of this four feet is in same level, may insure two above-mentioned antenna bodies to described in this way
The consistency of the distance of circuit substrate.
Further, referring to Figure 1 with Fig. 2, the IFA antenna further includes：First support leg 8 and the second support leg 9；Institute
State the first support leg 8, from the first inverse-F antenna body 1 far from the position for neutralizing arm 3 toward the bottom of the IFA antenna
Direction extend out；Second support leg 9, from the second inverse-F antenna body 2 far from the position for neutralizing arm 3 toward
The direction of the bottom of the IFA antenna extends out.By the way that first support leg 8 and second support leg 9 is arranged, in this way
Antenna can effectively be supported and ensure the balance before and after the total of antenna.Preferably, first support leg 8, institute
State the second support leg 9, the first feed foot 4, the second feed foot 5, the first short-circuit foot 6 and second short circuit
The extending end of this six feet of foot 7 may insure two above-mentioned antenna bodies to the circuit base in this way in same level
The consistency of the distance of plate.It should be noted that above-mentioned six feet can be strip sheet shape structure, acicular texture or column structure
Etc. structures, be not specifically limited herein.
In the above embodiment, it is preferable that the neutralization arm 3 is bending structure referring to Figure 1 with Fig. 2, guaranteeing in this way
While the neutralization arm 3 has certain coupling line lengths, enable to the spacing at the both ends for neutralizing arm 3 smaller,
So that entire antenna is smaller.Wherein, described to neutralize the bending structure that arm 3 is preferably arch shape.
In the above-described embodiments, specifically, referring to Figure 1 with Fig. 2, the first inverse-F antenna body 1 includes：First radiation
Arm 10 and the second radiation arm 11；First radiation arm 10 the first frequency band signals and is connected to the neutralization for transmitting and receiving
On described one end of arm 3, second radiation arm 11 the second frequency band signals and is connected to the neutralization arm 3 for transmitting and receiving
Described one end on, in this way, the two radiation arms make the first inverse-F antenna body 1 become dual-band antenna all the way.Described second
Inverse-F antenna body 2 includes：Third radiation arm 20 and the 4th radiation arm 21；The third radiation arm 20 third for transmitting and receiving
Frequency band signals are simultaneously connected on the other end for neutralizing arm 3, the 4th radiation arm 21 for transmitting and receiving the 4th
Frequency band signals are simultaneously connected on the other end for neutralizing arm 3, in this way, the two radiation arms make second inverted f day
Wire body 2 becomes another way dual-band antenna.
Further, referring to Figure 1 with Fig. 2, first radiation arm 10 is longer than described with the third radiation arm 20
Second radiation arm 11 and the 4th radiation arm 21, i.e.,：The first frequency band signals that first radiation arm 10 is worked with it is described
The signal frequency of both third frequency band signals that third radiation arm 20 is worked, to be worked lower than second radiation arm 11
The signal frequency of both the 4th frequency band signals that two frequency band signals and the 4th radiation arm 21 are worked.Further, since described
The length of first radiation arm 10 and the third radiation arm 20 is longer, in order to enable the overall dimensions of the two radiation arms become smaller,
The two radiation arms are disposed as bending structure.Wherein it is preferred to which first radiation arm 10 and the third radiation arm 20 are equal
For " oneself " character form structure；Second radiation arm 11 and the 4th radiation arm 21 are straight laminated structure.
In the above-described embodiments, more specifically, referring to Figure 1 with Fig. 2, first radiation arm 10 and second radiation
About 11 arm is opposite and interval is arranged, and the third radiation arm 20 is opposite with about 21 the 4th radiation arm and interval is arranged,
And four are respectively positioned on described the same side for neutralizing arm 3 (that is, this outside water in both ends by described the same side for neutralizing arm 3
Level land extends out), the compact-sized and size of entire antenna can be made to become smaller in this way.In addition, first radiation arm 10
It is opposite with the third radiation arm 20, and first radiation arm 10 and the third radiation arm 20 are curved toward region between the two
Folding can make the more compact structure of entire antenna and smaller in this way.More preferably, second radiation arm 11 and described the
Four radiation arms 21 are opposite.
As an example, referring to Figure 1 with Fig. 2, first radiation arm 10 is located at the top of second radiation arm 11,
The third radiation arm 20 is located at the top of the 4th radiation arm 21.
In the above-described embodiments, optionally, the length phase of first radiation arm 10 and both third radiation arms 20
Together, first frequency band signals are identical as the third frequency band signals, wherein are both preferably 2.4G frequency band signals.Described second
Radiation arm 11 is identical as the length of both the 4th radiation arms 21, second frequency band signals and the 4th frequency band signals phase
Together, wherein be both preferably 5G frequency band signals.
Above-described embodiment is integrated, the specific structure of the IFA antenna is obtained, wherein the IFA antenna can
Reach following performance：
1. size is small：Antenna uses inverse-F antenna form, while using meander technology to first radiation arm 10, described
Second radiation arm 11 and the neutralization arm 3 carry out multiple bending fold, and setting to the various pieces of the total of antenna
Seated position is rationally arranged, and is greatly reduced antenna size in this way, and the length and width of final entire antenna system size are a height of
14mm*13.55mm*4.25mm。
2. working frequency range is wide：Fig. 3 and Fig. 4 are referred to, these figures respectively illustrate the working frequency range performance of the IFA antenna
And isolation performance.Wherein, S11 is expressed as the first inverse-F antenna body being made of the first radiation arm 10 and the second radiation arm 11 in Fig. 3
The return loss of 1 this dual-band antenna all the way, S22 is expressed as being made of third radiation arm 20 and the 4th radiation arm 21 in Fig. 4
The return loss of this dual-band antenna all the way of the second inverse-F antenna body 2.It is less than the standard of -6dB, above-mentioned two-way according to return loss
Antenna has following two working frequency range：2355~2575MHz and 5110~5926MHz, the IFA antenna described in this way can cover
2400-2500MHz and 5150-5850MHz WIFI working frequency range.
3. isolation is high：Fig. 5 is referred to, the figure shows the isolations of the above-mentioned two-way antenna of the IFA antenna, and scheme
Middle S21 is expressed as the isolation between above-mentioned two-way antenna.In the case of antenna spacing 5.2mm, as seen from Figure 5, work frequency
The isolation of the first radiation arm 10 and both third radiation arms 20 that section is 2400-2500MHz is greater than 9dB；Working frequency range is
The second radiation arm 11 of 5150-5850MHz and the isolation of both the 4th radiation arms 21 are greater than 18dB.It can be seen that the IFA
The isolation of antenna is very high.
4. radiation efficiency is high：Table 1 and table 2 are referred to, the ant1 in table 1 is represented as the first radiation arm 10, and ant2 is represented as
Third radiation arm 20；Ant1 in table 2 is represented as the second radiation arm 11, and ant2 is represented as the 4th radiation arm 21.By the two tables
As can be seen that the IFA antenna is greater than 39% in the radiation efficiency of 2400-2500MHz frequency range, in 5150-5850MHz frequency range
Radiation efficiency is greater than 57%, it can be seen that, the radiation efficiency of the IFA antenna is very high.
Table 1：The radiation efficiency table of first radiation arm 10 and third radiation arm 20 in each working frequency
| Freq | 2400 | 2410 | 2420 | 2430 | 2440 | 2450 | 2460 | 2470 | 2480 | 2490 | 2500 |
| ant1 | 0.39 | 0.41 | 0.42 | 0.43 | 0.44 | 0.45 | 0.46 | 0.46 | 0.46 | 0.47 | 0.46 |
| ant2 | 0.42 | 0.42 | 0.43 | 0.43 | 0.42 | 0.42 | 0.42 | 0.41 | 0.40 | 0.40 | 0.39 |
Table 2：The radiation efficiency table of second radiation arm 11 and the 4th radiation arm 21 in each working frequency
| Freq | 5150 | 5200 | 5250 | 5300 | 5350 | 5400 | 5450 |
| ant1 | 0.61 | 0.67 | 0.69 | 0.69 | 0.70 | 0.68 | 0.69 |
| ant2 | 0.66 | 0.72 | 0.72 | 0.72 | 0.72 | 0.69 | 0.70 |
| Freq | 5550 | 5600 | 5650 | 5700 | 5750 | 5800 | 5850 |
| ant1 | 0.68 | 0.66 | 0.67 | 0.65 | 0.63 | 0.61 | 0.65 |
| ant2 | 0.68 | 0.65 | 0.64 | 0.60 | 0.59 | 0.57 | 0.62 |
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art is in technical scope disclosed by the invention, and any changes or substitutions that can be easily thought of, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of IFA antenna, which is characterized in that including：First inverse-F antenna body, the second inverse-F antenna body neutralize arm, the first feed
Foot, the second feed foot, the first short-circuit foot and the second short-circuit foot；
The first inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and it is connected to described one end for neutralizing arm
On；The second inverse-F antenna body, at least two frequency band signals for transmitting and receiving, and it is connected to the other end for neutralizing arm
On；
The first feed foot is extended outward by the neutralizations arm or the first inverse-F antenna body, and is used for described the
One inverse-F antenna body feed；
The second feed foot is extended outward by the neutralizations arm or the second inverse-F antenna body, and is used for described the
Two inverted f antenna bodies feed；
The first short-circuit foot is extended outward by the neutralizations arm or the first inverse-F antenna body, and is used to making described the
One inverse-F antenna body impedance matching；
The second short-circuit foot is extended outward by the neutralizations arm or the second inverse-F antenna body, and is used to making described the
Two inverted f antenna body impedance matchings.
2. IFA antenna according to claim 1, which is characterized in that the first feed foot and the first short-circuit foot are equal
It is extended out outward by described described one end for neutralizing arm；
The second feed foot and the second short-circuit foot are extended out outward by the other end for neutralizing arm；
Described first short-circuit foot and the second short-circuit foot are located at the first feed foot and the second feed foot between the two.
3. IFA antenna according to claim 2, which is characterized in that the first feed foot, the second feed foot, institute
It states the first short-circuit foot and the second short-circuit foot extends out toward the direction of the bottom of the IFA antenna, and four
Extending end is located in same level.
4. IFA antenna according to claim 3, which is characterized in that further include：
First support leg, from the first inverse-F antenna body far from the position for neutralizing arm toward the bottom of the IFA antenna
Direction extends out；And
Second support leg, from the second inverse-F antenna body far from the position for neutralizing arm toward the bottom of the IFA antenna
Direction extends out.
5. IFA antenna according to claim 1, which is characterized in that the neutralization arm is bending structure.
6. IFA antenna according to any one of claims 1 to 5, which is characterized in that
The first inverse-F antenna body includes：
First radiation arm, for transmitting and receiving the first frequency band signals and be connected to it is described neutralize arm described one end on；And
Second radiation arm, for transmitting and receiving the second frequency band signals and be connected to it is described neutralize arm described one end on；
The second inverse-F antenna body includes：
Third radiation arm, for transmitting and receiving third frequency band signals and be connected to it is described neutralize arm the other end on；And
4th radiation arm, for transmitting and receiving the 4th frequency band signals and be connected to it is described neutralize arm the other end on.
7. IFA antenna according to claim 6, which is characterized in that first radiation arm and the third radiation arm are equal
It is longer than second radiation arm and the 4th radiation arm, and first radiation arm and the third radiation arm are bending knot
Structure.
8. IFA antenna according to claim 7, which is characterized in that on first radiation arm and second radiation arm
Lower opposite and interval setting, the third radiation arm is opposite up and down with the 4th radiation arm and interval is arranged, and four equal positions
In described the same side for neutralizing arm；
Both first radiation arm is opposite with the third radiation arm, and first radiation arm and the third radiation arm are past
Between region bending.
9. IFA antenna according to claim 6, which is characterized in that first frequency band signals and the third frequency range are believed
It number is 2.4G frequency band signals；
Second frequency band signals and the 4th frequency band signals are 5G frequency band signals.
10. a kind of communication equipment, which is characterized in that including IFA antenna as described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591799.4A CN108899634A (en) | 2018-06-07 | 2018-06-07 | A kind of IFA antenna and communication equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591799.4A CN108899634A (en) | 2018-06-07 | 2018-06-07 | A kind of IFA antenna and communication equipment |
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| CN108899634A true CN108899634A (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810591799.4A Pending CN108899634A (en) | 2018-06-07 | 2018-06-07 | A kind of IFA antenna and communication equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109713428A (en) * | 2018-12-26 | 2019-05-03 | 北京交通大学 | A kind of multiband high-gain aerial |
| CN111864350A (en) * | 2019-04-29 | 2020-10-30 | 北京小米移动软件有限公司 | Antenna and terminal |
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| EP2466684A1 (en) * | 2010-12-14 | 2012-06-20 | Centre National de la Recherche Scientifique (C.N.R.S) | Diversity antenna system |
| US20130069841A1 (en) * | 2011-09-20 | 2013-03-21 | Samsung Electronics Co., Ltd. | Antenna apparatus for a portable terminal |
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| CN1697253A (en) * | 2004-05-14 | 2005-11-16 | 广达电脑股份有限公司 | Hidden type antenna assembly in multifrequency |
| EP2466684A1 (en) * | 2010-12-14 | 2012-06-20 | Centre National de la Recherche Scientifique (C.N.R.S) | Diversity antenna system |
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| CN109713428A (en) * | 2018-12-26 | 2019-05-03 | 北京交通大学 | A kind of multiband high-gain aerial |
| CN111864350A (en) * | 2019-04-29 | 2020-10-30 | 北京小米移动软件有限公司 | Antenna and terminal |
| CN111864350B (en) * | 2019-04-29 | 2021-08-24 | 北京小米移动软件有限公司 | Antenna and terminal |
| US11165153B2 (en) * | 2019-04-29 | 2021-11-02 | Beijing Xiaomi Mobile Software Co., Ltd. | Antenna and terminal |
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