CN105048085B - Dipole antenna - Google Patents
Dipole antenna Download PDFInfo
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- CN105048085B CN105048085B CN201510473754.3A CN201510473754A CN105048085B CN 105048085 B CN105048085 B CN 105048085B CN 201510473754 A CN201510473754 A CN 201510473754A CN 105048085 B CN105048085 B CN 105048085B
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- antenna
- main radiator
- signal feed
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- antenna element
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
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- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention provides a kind of dipole antennas, on substrate, including at least two antenna elements, each antenna element include there is impedance matching function and main radiator with a subtended angle and lotus root be connected to the main radiator subtended angle side signal feed-in section, the relatively described main radiator of signal feed-in section is in hook setting；Another opposite linear 180 ° of spin inversion in two antenna elements, the signal feed-in section of one of them antenna element is equipped with earth point, the signal feed-in section of another antenna element is equipped with signal feed-in point, and each the other end opposite with the subtended angle in the main radiator of the antenna element is equipped with open circuit point.Make to possess special impedance operator thereon since this two current paths of two kinds of electrical length in main radiator form subtended angle, and realize miniature ultra wide band, simply and can easily be accommodated antenna performance, and the theoretical loss of main radiator is small.
Description
Technical field
The present invention relates to antenna technologies, more particularly to a kind of dipole antenna.
Background technology
As people constantly enhance the integrated requirement of communication quality and communication equipment.As communication equipment subassembly, day
Line is also required to higher performance to meet the needs of communication system.The popularity rate of various mobile terminal devices socially promotes speed
Degree is very fast, and among these, most convenient, most quick way are exactly wireless access way, because of wireless access way saving
A large amount of network construction expense, can quickly plan, Fast Installation, quickly comes into operation, and safeguard also relatively succinct.How to set
Counting a kind of miniaturization built-in aerial becomes the difficult point and bottleneck of mobile communication development, so the characteristics of in order to meet this product,
Built-in aerial just needs same light, thin, small accordingly, and the performance of antenna itself cannot be but substantially reduced.
Currently, the built-in PCB printed antennas of various network communication terminal products, towards small space, high-performance direction is sent out
Exhibition, but since design cycle is lack of standardization, Antenna Design randomness is stronger, causes to there are problems that in R&D process.Packet
It includes and becomes increasingly conspicuous with space contradiction in router, cabling form is complicated, random strong, so that being adjusted in built-in Antenna Design
Sequence is complicated, and adjustment difficulty is big.Meanwhile disparity items difference is big, the poor universality of Antenna Design causes R&D costs high, resource
Consumption is big.How so that Antenna Design has very strong continuity and versatility, to reduce cost, reduction difficulty reduces the period
As one of problem.
Due to the miniaturization of product, keep the environment around antenna complex, this affects the impedance of antenna input, passes
The method of the adjustment input impedance of system is directly to adjust oscillator shape or add parasitic radiation section on oscillator, these methods lack
Point is mainly shown as asymmetry, the uneven distribution of antenna oscillator electric current, not only influences directional diagram, can also reduce antenna gain,
Efficiency.
Invention content
Present invention aims at provide a kind of dipole antenna, it is intended to solve existing antenna oscillator electric current asymmetry,
The problem of uneven distribution, reduction antenna gain, efficiency.
The present invention provides a kind of dipole antennas, are set on substrate, including at least two antenna elements, each day
Line unit includes the subtended angle side for having impedance matching function and there is the main radiator of a subtended angle and lotus root to be connected to the main radiator
Signal feed-in section, the relatively described main radiator of signal feed-in section is arranged in hook, the angles of two subtended angles at 0 ° extremely
In the range of 90 °；Another opposite linear 180 ° of spin inversion in two antenna elements, and two letters
Number feed-in is intersegmental every being oppositely arranged；The signal feed-in section of one of them antenna element is equipped with earth point, described in another
The signal feed-in section of antenna element is equipped with signal feed-in point, in the main radiator of each antenna element with the subtended angle phase
To the other end be equipped with open circuit point.
Compared with conventional method, the advantages of above-mentioned dipole antenna for due in main radiator two kinds of electrical length this two
Current path formed subtended angle can allow along the characteristic impedance of each point be gradual change, make to possess special impedance operator thereon,
And realize miniature ultra wide band；Adjust main radiator size and subtended angle to adjust antenna performance, it is simple and can easily be accommodated, can be with
It applies in various required frequency ranges；And the theoretical loss of main radiator is small, therefore efficient target may be implemented.
Description of the drawings
Fig. 1 is the structural schematic diagram of dipole antenna in present pre-ferred embodiments.
Specific implementation mode
In order to make technical problems, technical solutions and advantageous effects to be solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Referring to Fig. 1, being applied to the dipole antenna of Netcom's terminal device in present pre-ferred embodiments, by using double
Antenna deformation is bored, in conjunction with the impedance operator of biconical antenna, and a kind of high efficiency, the high bandwidth under complex environment evolved into
The dipole antenna of energy.By combining the special impedance characteristic of biconical antenna, realized in complex environment using biconical antenna deformation
Under high efficiency, high bandwidth performance.
Dipole antenna is set on substrate 10.Antenna body is printed on pcb board, and PCB antenna can both be fabricated separately into,
It can also be printed on system board and be fabricated to onboard antenna.Dipole antenna includes at least two antenna elements 20, Mei Gesuo
It includes that main radiator 21 with impedance matching function and with a subtended angle θ (i.e. angle) and lotus root are connected to the master to state antenna element 20
The signal feed-in section 22 of the sides subtended angle θ of radiator 21, the main radiator 21 relatively of the signal feed-in section 22 are set in hook
It sets, the angle of the two subtended angle θ is in the range of 0 ° to 90 °；One in two antenna elements 20 is in respect to another
Linear 180 ° of spin inversions, and two intervals of signal feed-in section 22 are oppositely arranged.In this way, forming the biconial day of deformation
Line.In two main radiators 21 formed radiating doublet two kinds of electrical length, formed two kinds of electrical length this two current paths it
Between form two sides 211,212 of subtended angle θ, two current paths, that is, subtended angle θ.
And the characteristic impedance of conventional transmission line is bigger, input impedance changes more violent, the impedance band of antenna with electrical length
Wide narrower, the characteristic impedance of oscillator depends on and slenderness ratio, in the case of length limitation, only widens the width method of oscillator
To realize that broadband is unpractical.Therefore two main radiators 21 of the invention allow two current paths 211,212 to form subtended angle
θ can allow along the characteristic impedance of each point be gradual change, therefore when subtended angle θ is sufficiently large, characteristic impedance can be sufficiently small, simultaneously
Infinity may be implemented in impedance bandwidth, is also the effective means for realizing ultra-wide band although physical condition limits.And such biography
The theoretical loss very little of defeated line morphology can effectively utilize power resource, realize efficient target.
In antenna body, the signal feed-in section 22 of one of them antenna element 20 is equipped with earth point 00, another
The signal feed-in section 22 of the antenna element 20 is equipped with signal feed-in point 01, the main radiator 21 of each antenna element 20
The upper other end opposite with the subtended angle θ is equipped with open circuit point 213.Preferably, two 22 faces of signal feed-in section and interval
Setting.Each signal feed-in section 22 is perpendicular to one side of the subtended angle θ of place antenna element 20.
The main radiator 21 is projected as class triangle on the substrate 10.Such as：Projection on the substrate 10
For trapezoidal, triangle or taper.In the present embodiment, main radiator 21 be right angled triangle, and signal feed-in section 22 then perpendicular to
The right-angle side 211 of subtended angle θ.With reference to figure 1, each side of main radiator 21 is preferably straight line, and according to actual conditions needs,
It can be arranged to curve or broken line, in addition, the overall length of the main radiator 21 and signal feed-in section 22 of each antenna element 20
1/4 wavelength of the corresponding default antenna frequency range of degree.
The earth point 00 and signal feed-in point 01 of the dipole antenna are fed by 50 ohm coaxial cables 50.It is logical
It crosses coaxial wire 50 and is connected in the RF radio frequency systems of Netcom's terminal device and work.As it can be seen that the dipole antenna is efficient
Rate, high bandwidth and simple in structure, it is easy to use.
The total length of main radiator 21 and signal feed-in section 22 is 1/4 wavelength of assigned frequency, the model of effective electric field degree
Enclosing can be directly affected by the frequency range of target, and simple in structure.Under complex environment, by adjusting main radiator 21
Size and subtended angle θ, it may be convenient to adjust antenna performance, be allowed to optimal.Greatly improve signal of the user in weak signal environment
Receive and dispatch effect, can be avoided to provide gain and use oversized antenna, reduce entire terminal device pocket and
Type easy to use.And at the same time ensure the miniaturization of antenna, the characteristics of low-profile size, cost is saved, product is maintained
Overall appearance.
Antenna mounting means is assembling, and antenna body is printed on pcb board, and PCB antenna can both be fabricated separately into, is installed
In the inner wall of casing, it can also be printed on system board and be fabricated to onboard antenna, two kinds of mounting means can pass through 50 Europe
Nurse coaxial cable is fed, and is connected in the RF radio frequency systems of Netcom's terminal device and is worked by coaxial wire.Compared with
Traditional PCB printed dipole antenna, this two current path 211,212 of this antenna due to two kinds of electrical length in main radiator 20
Formed subtended angle θ can allow along the characteristic impedance of each point be gradual change, make to possess special impedance operator thereon, and realize small-sized
Change ultra wide band；The size and subtended angle θ of adjustment main radiator 21 simply and can easily be accommodated, can apply to adjust antenna performance
Various required frequency ranges；And the theoretical loss of main radiator 21 is small, therefore efficient target may be implemented.It can be in the smaller sky of casing
Interior use, guaranteed efficiency and gain.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. a kind of dipole antenna is set on substrate, which is characterized in that include the antenna element of at least two tapers, Mei Gesuo
It includes having impedance matching function and having the main radiator of a subtended angle and be coupled to the subtended angle of the main radiator to state antenna element
The signal feed-in section of side, the relatively described main radiator of signal feed-in section are arranged in hook, and the angle of two subtended angles exists
In the range of 0 ° to 90 °；Another opposite linear 180 ° of spin inversion in two antenna elements, and two institutes
It is intersegmental every being oppositely arranged to state signal feed-in；The signal feed-in section of one of them antenna element is equipped with earth point, another
The signal feed-in section of the antenna element is equipped with signal feed-in point, in the main radiator of each antenna element with described
The opposite other end in angle is equipped with open circuit point；
The subtended angle both sides of the main radiator are two kinds of electrical length.
2. dipole antenna as described in claim 1, which is characterized in that the main radiator being projected as on the substrate
Class triangle.
3. dipole antenna as claimed in claim 1 or 2, which is characterized in that the throwing of the main radiator on the substrate
Shadow is trapezoidal, triangle or taper.
4. dipole antenna as described in claim 1, which is characterized in that the main radiator and signal of each antenna element
The total length of feed-in section corresponds to 1/4 wavelength of default antenna frequency range.
5. dipole antenna as described in claim 1, which is characterized in that the earth point of the dipole antenna and signal feed-in
Point is fed by coaxial cable.
6. dipole antenna as described in claim 1, which is characterized in that two signal feed-in section faces and interval set
It sets.
7. dipole antenna as described in claim 1 or 6, which is characterized in that each signal feed-in section is perpendicular to place
One side of the subtended angle of antenna element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510473754.3A CN105048085B (en) | 2015-08-05 | 2015-08-05 | Dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510473754.3A CN105048085B (en) | 2015-08-05 | 2015-08-05 | Dipole antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105048085A CN105048085A (en) | 2015-11-11 |
| CN105048085B true CN105048085B (en) | 2018-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510473754.3A Active CN105048085B (en) | 2015-08-05 | 2015-08-05 | Dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105048085B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099354B (en) * | 2016-08-05 | 2023-04-07 | 深圳前海科蓝通信有限公司 | Dual-frequency built-in antenna and design method thereof |
| CN106169648A (en) * | 2016-08-09 | 2016-11-30 | 深圳前海科蓝通信有限公司 | A kind of electrical tilt control method of antenna and described antenna |
| CN109888497B (en) * | 2019-03-18 | 2024-03-22 | 深圳市共进电子股份有限公司 | Planar dipole dual-band antenna and antenna device |
| CN110289489B (en) * | 2019-07-25 | 2024-03-22 | 宁波迈立杰电子有限公司 | Omnidirectional antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2562384Y (en) * | 2002-07-24 | 2003-07-23 | 富士康(昆山)电脑接插件有限公司 | Mini-band antenna |
| US7501955B2 (en) * | 2004-09-13 | 2009-03-10 | Avery Dennison Corporation | RFID device with content insensitivity and position insensitivity |
| US7336236B2 (en) * | 2005-08-24 | 2008-02-26 | Arcadyan Technology Corporation | Triangular dipole antenna |
| CN201142358Y (en) * | 2007-12-06 | 2008-10-29 | 寰波科技股份有限公司 | Printed dipole antenna with multiple frequency bands |
| US8653975B2 (en) * | 2008-12-03 | 2014-02-18 | The University Of Kansas | Radio-frequency identification device with foam substrate |
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- 2015-08-05 CN CN201510473754.3A patent/CN105048085B/en active Active
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| CN105048085A (en) | 2015-11-11 |
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