CN104701600A - Antenna structure - Google Patents
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- CN104701600A CN104701600A CN201310655964.5A CN201310655964A CN104701600A CN 104701600 A CN104701600 A CN 104701600A CN 201310655964 A CN201310655964 A CN 201310655964A CN 104701600 A CN104701600 A CN 104701600A
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Abstract
The invention provides an antenna structure comprising a shaft portion and two radiating branches symmetrical about the shaft portion. Each radiating branch comprises a basic square having a first edge, a second edge, a third edge and a fourth edge. Each radiating branch comprises a first side, corresponding to the first edge, a second side, corresponding to the second edge, a third side, corresponding to the third edge, a fourth side, corresponding to the fourth edge, and a curved edge hinged to the third side and the fourth side and having certain curvature.
Description
Technical field
The present invention about a kind of antenna structure, espespecially a kind of dipole antenna configuration for electronic installation or radio transmitting device.
Background technology
In the epoch now that development in science and technology is maked rapid progress, sizes antenna that is light and handy or kenel develops, and is applied in the day by day light and handy portable electric device of various sizes (such as mobile phone, notebook computer) or radio transmitting device (such as AP, wireless network card Card Bus).For example, simple, cheap, the easy manufacture of light structure, transmission usefulness are good and can be arranged on planar inverted F-antenna (the Planar Inverse-FAntenna of portable electric device inwall easily, PIFA), unipole antenna (Monopole Antenna) or dipole antenna exist, and be widely used in the wireless transmission of multiple portable electric device or notebook computer or radio communication device.In the conventional technology, mostly the inner conductor layer of coaxial cable and peripheral conductors layer are welded in respectively signal load point and the signal earth point of PIFA, to be exported via PIFA by signal defeated for tendency to develop.PIFA antenna has existed and has been widely used in the wireless transmission of multiple portable electric device or notebook computer or radio communication device.
Dipole antenna is one of the most traditional and the most classic Antenna Design, but the bandwidth of the resonance frequency of traditional dipole antenna is narrower, cannot meet the demand of practical application.Though existing many about for this antenna structure of change to increase the research of this dipole antenna bandwidth and resonance frequency thereof, so it often needs extra extended structure, to increase its bandwidth and resonance frequency, now by making the size of this antenna increase simultaneously, it is made to be applied to the limited ability of compact electronic building brick.
Whence is event, and applicant, because the disappearance of known techniques, invents " antenna structure " of this case, to improve above-mentioned disappearance.
Summary of the invention
An aspect of of the present present invention provides a kind of antenna structure, it comprises an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, wherein respectively the basic quadrangle of this radiation branch tool one, this basic quadrangle tool one first limit, a Second Edge, one the 3rd limit and one the 4th limit and respectively this radiation branch comprise: one first side, isometric with this first limit; One second side, isometric with this Second Edge; One the 3rd side, its length is at least 1/6 of the 3rd limit; One the 4th side, its length is at least 1/5 of the 4th limit; And one derives the 5th side, it links the 3rd side and the 4th side with specific curvature.
Another aspect of the present invention provides a kind of antenna structure, it comprises an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, wherein respectively the basic quadrangle of this radiation branch tool one, this basic quadrangle tool one first limit, a Second Edge, one the 3rd limit and one the 4th limit and respectively this radiation branch comprise: one first side, to should the first limit; One second side, to should Second Edge; One the 3rd side, to should the 3rd limit; One the 4th side, to should the 4th limit; And one derives the 5th side, is positioned at this basic quadrangle, and links the 3rd side and the 4th side with specific curvature.
Another aspect of the present invention provides a kind of antenna structure, and it comprises an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, and wherein respectively this radiation branch comprises: a basic quadrangle; One real part, is formed along this basic quadrangle, and tool one first area; And an imaginary part, formed along this basic quadrangle, and tool one second area, wherein this basic quadrangle cuts out this first area and this second area with a curved side of a specific curvature.
Accompanying drawing explanation
This case must by following graphic detailed description, with more deep Xie ︰
Fig. 1 is the front view of the antenna structure of one embodiment of the invention.
Fig. 2 is the schematic diagram in signal feed-in district in the antenna structure of one embodiment of the invention.
Fig. 3 is the front view of the antenna structure of another embodiment of the present invention.
Fig. 4 is the variation diagram returning loss of the antenna structure of one embodiment of the invention.
Fig. 5 is the variation diagram returning loss of the antenna structure of another embodiment of the present invention.
Fig. 6 is the variation diagram returning loss that the present invention has the antenna structure of different slots porose area size.
Embodiment
The present invention can be illustrated by following embodiment and be fully understood, and make the personage haveing the knack of this skill can complete it according to this, and the enforcement of right this case not can be limited it and implement kenel by the following example.
The object of this invention is to provide a kind of dipole antenna configuration be used on radio transmitting device, wherein in-building type dipole antenna is applicable in radio transmitting device product, as in the products such as notebook computer, personal digital assistant and mobile phone, and can adjustment easily be done according to the demand of product and revise to reach applicable application.For embodiment can be applicable to operation frequency range WiFi 802.11b/g/n (2.40-2.50GHz) band system band demand, also can be applicable to Long Term Evolution (Long TermEvolution; LTE) operation frequency range; as: the system frequency range demand of LTE-Band 7 (2500-2690MHz), LTE-Band40 (2300-2400MHz), LTE-Band 38 (2570-2620MHz); or can be applicable in radio communication device, as notebook computer or mobile phone or AP or to comprise in TV or DVD of WiFi etc.; Also can be applicable to the system of the 2300MHz-2700MHz of LTE frequency range, or slightly can do frequency range adjustment and be applied in the wireless communication system of other operation frequency range.
Refer to the 1st figure, it is the front view of the antenna structure 10 of one embodiment of the invention.As shown in Figure 1, the antenna structure 10 of integrally formed printing-type is arranged on a substrate by the present invention, this antenna structure 10 has the single center frequency of operation under a single bandwidth, and comprise one first radiation branch 101, one second radiation branch 102, one first slotted eye district 103, one second slotted eye district 104, one first rectangle structure 107, one second rectangle structure 108, and an interstitial structure 109, 110, wherein this first radiation branch 101 and this second radiation branch 102 form first foundation quadrangle block 105 and an one second basic quadrangle block 106 with this first slotted eye district 103 and this second slotted eye district 104 respectively.
This antenna structure 10 comprises this first foundation quadrangle block 105 and this second basic quadrangle block 106.This first foundation quadrangle block 105 comprises one first real part and one first imaginary part, this first real part tool one first area A1, and this first imaginary part tool one second area A3.This second basic quadrangle block 106 comprises one second real part and one second imaginary part, this second real part tool 1 the 3rd area A 2, and this second imaginary part tool one fourth face amasss A4.
First gross area (A1+A3) that this first real part and this first imaginary part are formed is identical with second gross area (A2+A4) that this second real part and this second imaginary part are formed.
This antenna structure 10 comprises an axle portion and this symmetrical the first radiation branch 101 and this second radiation branch 102 along this axle portion, and there is between these branches one first rectangle structure 107,1 second rectangle structure 108 and an interstitial structure 109,110, wherein this first radiation branch 101 and this first rectangle structure 107 are in one first copline block, and this second radiation branch 102 and this second rectangle structure 108 are in one second copline block.This first copline block and this second copline block are positioned at same plane, and this interstitial structure 109,110 is arranged between this first copline block and this second copline block, in order to these copline blocks isolated.
This first rectangle structure and this second rectangle structure are symmetrical in a reference position, and this first rectangle structure 107 and this second rectangle structure 108 have one first width D 11 and one second width D 12 respectively.
This first foundation quadrangle block 105 has one first limit, a Second Edge, one the 3rd limit and one the 4th limit, and wherein this first radiation branch 101 has one first side, one second side, one the 3rd side, one the 4th side and derivative 5th side.This first side is to should the first limit, this second side is to should Second Edge, and the 3rd side is to should the 3rd limit, and the 4th side is to should the 4th limit, and this derivative 5th side is positioned at this first foundation quadrangle 105, and link the 3rd side and the 4th side with a specific curvature.This first side has one first length (D1+D11), this second side has one second length (D2+D3), 3rd side has one the 3rd length D5, and the 4th side has one the 4th length D2, and wherein this first length (D1+D11) is in order to determine a center frequency of operation of this antenna structure 10.
This second basic quadrangle block 106 has one first limit, a Second Edge, one the 3rd limit and one the 4th limit, and wherein this first radiation branch 101 has one first side, one second side, one the 3rd side, one the 4th side and derivative 5th side.This first side is to should the first limit, this second side is to should Second Edge, and the 3rd side is to should the 3rd limit, and the 4th side is to should the 4th limit, and this derivative 5th side is positioned at this second basic quadrangle 106, and link the 3rd side and the 4th side with a specific curvature.This first side has one first length D6, this second side has one second length (D7+D8), 3rd side has one the 3rd length (D10+D12), and the 4th side has one the 4th length D7, and wherein this first length D6 is in order to determine a center frequency of operation of this antenna structure 10.This specific curvature that this derivative 5th side is formed formed by 1/4th elliptical shape structures.
1/2 times of the wavelength of one center frequency of operation of this antenna structure 10 is the summation (D1+D11+D6) of these the first length of this first radiation branch 101 and this second radiation branch 102, wherein this first width D 11 is very little, this numerical value is 1.6% of this wavelength, therefore, this first width D 11 impact on the change of this center frequency of operation is insignificant.
This first and the 3rd side length D2, the D7 of this second radiation branch 101,102, be at least this first and these the 3rd edge lengths (D2+D3) of this second basic quadrangle block 105,106,1/6 of (D7+D8).This first and the 4th side length D5 of this second radiation branch 101,102, (D10+D12), be at least 1/5 of the 4th limit.Because this second width D 12 is very little, this numerical value is 1.6% of this wavelength, and therefore, this second width D 12 impact on the change of this center frequency of operation is insignificant, can't affect the characteristic of this antenna structure.
This second area A3 in this first slotted eye district 103 in this first foundation quadrangle block 105, A4 is amassed with this fourth face in this second slotted eye district 104 in this second basic quadrangle block 106, can in order to determine a bandwidth of operation and an impedance matching of this antenna structure 10.
This first slotted eye district 103 has 1/1st elliptical shape structure, wherein this 1/4th elliptical shapes structure by one of one first extension edge, the 4th limit second extension edge on the 3rd limit of this first foundation quadrangle block 105 and this first curved side institute around, wherein this first curved side is equal to this derivative 5th side of this first radiation branch 101.This first extension edge and this second extension edge have one the 5th length D3 and the 6th length D4 respectively.This second slotted eye district 104 has 1/1st elliptical shape structure, wherein this 1/4th elliptical shapes structure by one of one first extension edge, the 4th limit second extension edge on the 3rd limit of this first foundation quadrangle block 106 and this second curved side institute around, wherein this second curved side is equal to this derivative 5th side of this second radiation branch 102.This first extension edge and this second extension edge have one the 5th length D8 and the 6th length D9 respectively.These the 5th length D3, D8 and these the 6th length D4, D9 form one first aspect ratio (D3/D4) and one second aspect ratio (D8/D9) respectively, in order to determine one of this antenna structure 10 bandwidth of operation and an impedance matching.
By the 3rd length D5 fixed in this first radiation branch 101, and increase by the 6th length D4, make the numerical value of this first aspect ratio (D3/D4) become large, and make this bandwidth of operation of this antenna structure 10 shift to the bandwidth of upper frequency.In addition, also by the 4th length D2 fixed in this first radiation branch 101, and can increase by the 3rd length D5, make the numerical value of this first aspect ratio (D3/D4) become large, and make this bandwidth of operation of this antenna structure 10 shift to the bandwidth of upper frequency.
When the numerical value of this first aspect ratio (D3/D4) or the second aspect ratio (D8/D9) is less than 0.56, this bandwidth of operation shifts to the bandwidth of lower frequency; And when this numerical value is greater than 0.62, this bandwidth of operation shifts to the bandwidth of upper frequency.As shown in Figure 1, these radiation branches comprise one first radiation branch 101, and this first radiation branch 101 comprises one first real part and one first imaginary part.This first real part comprises one first boot-like structure and one first rectangle structure.This first boot-like structure has one first periphery, this first periphery comprise one first limit, relative to limit, one of this first limit the 3rd, a Second Edge, relative to one the 4th limit of this Second Edge and one first curved side, wherein this first limit and the 4th limit have one first right angle betwixt, this first limit and this Second Edge have one second right angle betwixt, and this Second Edge and the 3rd limit have one the 3rd right angle betwixt, wherein this Second Edge has a upper end and a lower end.This first rectangle structure extends from this upper end of this Second Edge, and is positioned in a copline with this first boot-like structure.This first imaginary part is one first slotted eye district, and has 1/1st elliptical shape structure, wherein this 1/4th elliptical shapes structure by one first extension edge on the 3rd limit, one second extension edge on the 4th limit and this first curved side institute around.This first slotted eye district has one first aspect ratio, and this first aspect ratio is the length ratio (D3/D4) of this first extension edge to this second extension edge.This first extension edge and this second extension edge have one first right angle betwixt.This specific curvature of this first curved side formed by this 1/4th elliptical shapes structure.
These radiation branches also comprise one second radiation branch 102, and this second radiation branch 102 comprises one second real part and one second imaginary part.This second real part comprises one second boot-like structure and one second rectangle structure.This second boot-like structure has one second peripheral, wherein this second periphery comprise one first limit, one the 3rd limit relative to this first limit, a Second Edge, relative to one the 4th limit of this Second Edge and one second curved side.This first limit and the 4th limit have one first right angle betwixt, and this first limit and this Second Edge have one second right angle betwixt, and this Second Edge and the 3rd limit have one the 3rd right angle betwixt.This Second Edge has a upper end and a lower end.This second rectangle structure extends from this lower end of this Second Edge, and is positioned in a copline with this first boot-like structure.This second imaginary part is one second slotted eye district, and has 1/1st elliptical shape structure, wherein this 1/4th elliptical shapes structure by one first extension edge on the 3rd limit, one second extension edge on the 4th limit and this second curved side institute around.This second slotted eye district has one second aspect ratio, and this second aspect ratio is the length ratio (D8/D9) of this first extension edge to this second extension edge.This first extension edge and this second extension edge have one second right angle betwixt.This specific curvature of this second curved side formed by this 1/4th elliptical shapes structure, and this first boot-like structure and this second boot-like structure are a specular.
This first aspect ratio is between 0.56-0.62, and this second aspect ratio is between 0.56-0.62.One interstitial structure is configured between this first radiation branch 101 and this second radiation branch 102, and comprises backward L-shaped structure 109 and an inverted L-shaped structure 110.This backward L-shaped structure 109 is made up of one first rectangle branch and one second rectangle branch.This first rectangle branch has one first long limit, one second long limit relative to this first long limit, one first upper end and one first bottom.This second rectangle branch extends from this second side and this first bottom, and forms a right angle with this first rectangle branch.This inverted L-shaped structure 110 is made up of one the 3rd rectangle branch and one the 4th rectangle branch.4th rectangle branch has one first long limit, one second long limit relative to this first long limit, one second upper end and one second bottom.3rd rectangle branch extends from this first long limit and this second upper end, and forms a right angle with the 4th rectangle branch.This second rectangle branch and the 3rd rectangle branch are positioned in copline.Any branch of this first rectangle branch and this second rectangle branch, the 3rd rectangle branch and the 4th rectangle branch is a copline.The size of this first rectangle branch and this second rectangle branch is equal to the size of the 4th rectangle branch and the 3rd rectangle branch respectively.The size of this second rectangle branch and the 3rd rectangle branch is less than the size of this first rectangle branch and the 4th rectangle branch respectively.This backward L-shaped structure 109 is symmetrical in a reference position with this inverted L-shaped structure 110.
Refer to Fig. 2, it is the front view of feed side and earth terminal in the antenna structure of one embodiment of the invention.As shown in the 1st figure and Fig. 2, the present invention prints out has an interstitial structure 109,110 in an antenna structure 10 of middle body.This antenna structure 10 comprises a signal feed-in district 20, and this signal feed-in district 20 is positioned at this interstitial structure 109,110, and comprises feed side 201, cable 202 and an earth terminal 203, and wherein this cable 202 also comprises a separator 204.
This earth terminal 203 is not connected with a substrate, and this feed side 201 is configured at a coaxial wire with this earth terminal 203, this coaxial wire comprises a feed-in line and an earth connection, arranges a separator between this feed-in line and this earth connection, with this feed-in line isolated and this earth connection.
Be a printed circuit board (PCB) for configuring this substrate (not shown) of this antenna structure 10, this printed circuit board (PCB) comprises a first area, a second area and one the 3rd region (not shown).This first area is positioned at a first surface of this substrate, and has this antenna structure.This second area is positioned at one second of this substrate, and has a non-metal surfaces.3rd region is positioned at this second, and has a metal covering, and wherein the 3rd region also has a non-metal surfaces.
Refer to Fig. 3, it is the front view of the antenna structure 30 of another embodiment of the present invention.As shown in Figure 3, this antenna structure 30 comprises an axle portion and the Liang Ge radiation branch 301,302 symmetrical along this axle portion, the wherein each basic quadrangle block of this radiation branch 301,302 each tool one, this basic quadrangle block tool one first limit, a Second Edge, one the 3rd limit and one the 4th limit, and respectively this radiation branch comprises one first side, one second side, one the 3rd side, one the 4th side and derivative 5th side.This first side is to should the first limit, and this second side is to should Second Edge, and the 3rd side is to should the 3rd limit, and the 4th side is to should the 4th limit, and this derivative 5th side is positioned at this basic quadrangle block, and links the 3rd side and the 4th side with a specific curvature.
This first radiation branch 301 also comprises one first extension 305, and this first extension 305 is be positioned at this basic quadrangle block, extend from this derivative 5th side, and form one first angle a with this first radiation branch 301, and this first angle a is less than 90 degree.The length of side D14 of this first side and the length of side D13 of this first extension 305 is in order to determine a center frequency of operation of this antenna structure.Length of side D14, the D16 of this first side and this second side are greater than length of side D17, the D18 at least one times of the 4th side and the 3rd side respectively.This specific curvature of this derivative 5th side determined by 1/4th ellipses.This first radiation branch 301 has one first area A5 with this first extension 305, and this second radiation branch 302 has a second area 302.Have in these basic quadrangle blocks and each this radiation branch 301,302 corresponding one first slotted eye district 303 and one second slotted eye districts 304, wherein this first slotted eye district 303 and this second slotted eye district 304 have one the 3rd area A 7 and a fourth face amasss A8, in order to determine a bandwidth of operation and an impedance matching of this antenna structure 30 respectively.
The design of this first extension 305, when not increasing overall dimensions, increases the length of this first radiation branch 301, with obtain wish use centre frequency.3rd area A 7 in this first slotted eye district 303 is in order to adjust the impedance matching of this antenna structure 30.
This second radiation branch 302 also comprises one second extension (not shown), and this second extending part, in this basic quadrangle block, extend from this derivative 5th side, and form one second angle with this radiation branch, and this second angle system is less than 90 degree.This second extension with this axle portion and this first extension 305 symmetrical.The design of this first extension 305 and this second extension, when not increasing overall dimensions, increases the length of this first radiation branch 301 and this second radiation branch 302, to obtain the centre frequency of institute's wish use.3rd area A 7 and this fourth face in this first slotted eye district 303 and this second slotted eye district 304 amass A8 in order to adjust this bandwidth of operation and this impedance matching of this antenna structure 30.
Please refer to Fig. 4, the variation diagram returning loss of its antenna structure (as the 1st figure) according to an embodiment of the invention.The longitudinal axis of Fig. 4 is for returning loss (unit: dB), and transverse axis is frequency (unit: GHz).As shown in Figure 4, observe and change at frequency range 2.15-3.08GHz and center frequency of operation when returning loss as-10dB, point a, some b, some c, some d and some e loss/frequency (dB/GHz) numerical value that returns be respectively-17.82/2.40 ,-23.15/2.45 ,-23.18/2.50 ,-10.47/2.15 and-10.26/3.08, the center frequency of operation that this result shows the antenna structure of this case is 930MHz, and can cover the radio communication that bandwidth is IEEE 802.11bg completely.
Please refer to Fig. 5, the variation diagram returning loss of its antenna structure (as Fig. 3) according to another embodiment of the present invention.The longitudinal axis of Fig. 5 is for returning loss (unit: dB), and transverse axis is frequency (unit: GHz).As shown in Figure 5, observe and change at frequency range 1.94-2.57GHz and center frequency of operation when returning loss as-10dB, point a, some b, some c, some d and some e loss/frequency (dB/GHz) numerical value that returns be respectively-12.65/2.40 ,-12.06/2.45 ,-11.42/2.50 ,-10.47/1.94 and-10.53/2.57, the center frequency of operation that this result shows this antenna structure of this case one embodiment is 630MHz, and can to cover bandwidth be completely LTE(2300-2700MHz) radio communication.
From Fig. 4 and Fig. 5, the present invention can reach the change center frequency of operation of this antenna structure and the object of bandwidth of operation.
Please refer to Fig. 6, it is the changing pattern graphoid returning loss with the antenna structure of different slots porose area size of the present invention.The longitudinal axis of Fig. 6 is for returning loss (unit: dB), and transverse axis is frequency (unit: GHz).Because Fig. 6 is an analog result; so return loss not to be greater than-10dB; but from wherein finding out the trend of the aspect ratio of adjustment tank porose area to the system frequency response of this antenna structure; wherein when this aspect ratio is between 0.56 and 0.62; centre frequency does not have obvious movement (bandwidth is 2.4-2.5GHz), and impedance matching also conforms with certain value; So be less than 0.56 once this aspect ratio, center frequency of operation is (low frequency) mobile and bandwidth also difference to some extent left; Again when this aspect ratio is greater than 0.62, be not only center frequency of operation to the right (high frequency) mobile, and its impedance matching is poorer and bandwidth also difference to some extent.This trend demonstrates a bandwidth of operation and the impedance matching that this aspect ratio determines this antenna structure.
According to an embodiment of this case, complex antenna-configuration (as shown in the 1st figure or Fig. 3) can be arranged in the mode of regular polygon, to reach the function of omnidirectional radiation.
[symbol description]
10,30: antenna structure
101,102,301,302: radiation branch
103,104,303,304: slotted eye district
105,106: basic quadrangle block
107,108: rectangle structure
109,110: interstitial structure
20: signal feed-in district
201: cable
202: feed side
203: earth terminal
204: separator
305: extension
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18: distance
A1, A2, A3, A4, A5, A6, A7, A8: area
A: angle
Claims (10)
1. an antenna structure, comprise an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, wherein respectively this radiation branch has basic quadrangle block, and this basic quadrangle block has the first limit, Second Edge, the 3rd limit and the 4th limit and respectively this radiation branch comprises:
First side, isometric with this first limit;
Second side, isometric with this Second Edge;
3rd side, its length is at least 1/6 of the 3rd limit;
4th side, its length is at least 1/5 of the 4th limit; And
Derivative 5th side, it links the 3rd side and the 4th side with specific curvature.
2. an antenna structure, comprise an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, wherein respectively this radiation branch has basic quadrangle block, this basic quadrangle block has the first limit, Second Edge, the 3rd limit and the 4th limit and respectively this radiation branch comprises:
First side, corresponding to this first limit;
Second side, corresponding to this Second Edge;
3rd side, corresponding to the 3rd limit;
4th side, corresponding to the 4th limit; And
Derivative 5th side, is positioned at this basic quadrangle block, and links the 3rd side and the 4th side with specific curvature.
3. antenna structure as claimed in claim 2, wherein:
The first radiation branch respectively in this radiation branch also comprises the first extension, and this first extending part, in this basic quadrangle, extend from this derivative 5th side, and form the first angle with this radiation branch, and this first angle is less than 90 degree;
The length of side of this first side and this first extension is in order to determine the center frequency of operation of this antenna structure;
The length of side of this first side and this second side is greater than the length of side at least one times of the 4th side and the 3rd side respectively; And
This specific curvature of this curved side determined by 1/4th ellipses.
4. antenna structure as claimed in claim 3, the second radiation branch wherein respectively in this radiation branch also comprises:
Second extension, is positioned at this basic quadrangle block, extend from this derivative 5th side, and form the second angle with this radiation branch, and this second angle is less than 90 degree; And
This second extension with this axle portion and this first extension symmetrical.
5. an antenna structure, comprise an axle portion and the Liang Ge radiation branch symmetrical along this axle portion, wherein respectively this radiation branch comprises:
Basis quadrangle block;
Real part, is formed along this basic quadrangle, and has the first area; And
Imaginary part, formed along this basic quadrangle, and have second area, wherein this basic quadrangle cuts out this first area and this second area with the curved side of a specific curvature.
6. antenna structure as claimed in claim 5, wherein these radiation branches comprise the first radiation branch, and this first radiation branch comprises:
First real part, comprises:
First boot-like structure, there is the first periphery, wherein this first periphery comprise the first limit, the 3rd limit relative to this first limit, Second Edge, relative to the 4th limit of this Second Edge and the first curved side, wherein this first limit and the 4th limit have the first right angle betwixt, this first limit and this Second Edge have the second right angle betwixt, and this Second Edge and the 3rd limit have the 3rd right angle betwixt, wherein this Second Edge has a upper end and a lower end; And
First rectangle structure, extends this upper end from this Second Edge, and is positioned in a copline with this first boot-like structure; And
First imaginary part, it is the first slotted eye district, and there are 1/4th elliptical shape structures, wherein this 1/4th elliptical shapes structure by first extension edge on the 3rd limit, second extension edge on the 4th limit and this first curved side institute around, wherein this second slotted eye district has the first aspect ratio, this first aspect ratio is that this first extension edge is to the length ratio of this second extension edge, wherein this first extension edge and this second extension edge have the first right angle betwixt, and wherein this specific curvature of this first curved side formed by this 1/4th elliptical shapes structure.
7. antenna structure as claimed in claim 6, wherein these radiation branches also comprise the second radiation branch, and this second radiation branch comprises:
Second real part, comprises:
Second boot-like structure, there is the second periphery, wherein this second periphery comprise the first limit, the 4th limit relative to this first limit, Second Edge, relative to the 3rd limit of this Second Edge and the second curved side, wherein this first limit and the 3rd limit have the first right angle betwixt, this first limit and this Second Edge have the second right angle betwixt, and this Second Edge and the 4th limit have the 3rd right angle betwixt, wherein this Second Edge has a upper end and a lower end; And
Second rectangle structure, extends this lower end from this Second Edge, and is positioned in a copline with this first boot-like structure; And
Second imaginary part, it is the second slotted eye district, and there are 1/4th elliptical shape structures, wherein this 1/4th elliptical shapes structure is by first extension edge on the 3rd limit, second extension edge on the 4th limit and this second curved side institute around, wherein this second slotted eye district has the second aspect ratio, this second aspect ratio is that this first extension edge is to the length ratio of this second extension edge, wherein this first extension edge and this second extension edge have the second right angle betwixt, wherein this specific curvature of this second curved side formed by this 1/4th elliptical shapes structure, and this first boot-like structure and this second boot-like structure are specular.
8. antenna structure as claimed in claim 7, wherein:
This first in length and breadth when this second aspect ratio determine the size of this second area;
The size of this second area determines the size of this first area;
This first area determines the center frequency of operation of this antenna structure;
This second area determines bandwidth of operation and the impedance matching of this antenna structure;
This first aspect ratio is between 0.56-0.62; And
This second aspect ratio is between 0.56-0.62.
9. antenna structure as claimed in claim 7, also comprises:
Interstitial structure, is configured between this first radiation branch and this second radiation branch, and comprises:
Backward L-shaped structure, be made up of the first rectangle branch and the second rectangle branch, this the first rectangle branch has the first long limit, the second long limit relative to this first long limit, the first upper end and the first bottom, this the second rectangle branch extends from this second side and this first bottom, and forms right angle with this first rectangle branch;
Inverted L-shaped structure, be made up of the 3rd rectangle branch and the 4th rectangle branch, 4th rectangle branch has the first long limit, the second long limit relative to this first long limit, the second upper end and the second bottom, 3rd rectangle branch extends from this first long limit and this second upper end, and form right angle with the 4th rectangle branch, wherein:
This second rectangle branch and the 3rd rectangle branch are positioned in copline;
Any branch of this first rectangle branch and this second rectangle branch, the 3rd rectangle branch and the 4th rectangle branch is a copline;
The size of this first rectangle branch and this second rectangle branch is equal to the size of the 4th rectangle branch and the 3rd rectangle branch respectively;
The size of this second rectangle branch and the 3rd rectangle branch is less than the size of this first rectangle branch and the 4th rectangle branch respectively; And
This inverted L-shaped structure and this backward L-shaped symmetrical configuration are in a reference position.
10. antenna structure as claimed in claim 9, wherein:
This first rectangle structure is configured between this first boot-like structure and this backward L-shaped structure, and comprises:
Feed side, in order to input a signal;
This second rectangle structure is configured between this second boot-like structure and this inverted L-shaped structure, and comprises:
Earth terminal, it is not connected with this substrate, and this feed side and this earth terminal are configured at a coaxial wire, and this coaxial wire comprises feed-in line and earth connection, arrange separator between this feed-in line and this earth connection, with this feed-in line isolated and this earth connection; And
This first rectangle structure and this second rectangle structure are symmetrical in this reference position.
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| CN201310655964.5A CN104701600A (en) | 2013-12-06 | 2013-12-06 | Antenna structure |
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| CN201310655964.5A CN104701600A (en) | 2013-12-06 | 2013-12-06 | Antenna structure |
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