CN206490177U - Log-periodic antenna - Google Patents
Log-periodic antenna Download PDFInfo
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- CN206490177U CN206490177U CN201720157452.XU CN201720157452U CN206490177U CN 206490177 U CN206490177 U CN 206490177U CN 201720157452 U CN201720157452 U CN 201720157452U CN 206490177 U CN206490177 U CN 206490177U
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- 230000003247 decreasing effect Effects 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model provides a kind of log-periodic antenna, including two antenna oscillators, support and base, the both sides of the vibrator body are provided with the oscillator arms of alternate shape along its length, the length of oscillator arms is successively decreased one by one by the bottom of vibrator body to top, and the spacing on the top of oscillator arms to vibrator body is successively decreased one by one；One antenna oscillator is installed on the front side of the support, and another antenna oscillator is installed on the rear side of the support, and two antenna oscillators are set in angle along its length, and the base is connected with the bottom of two antenna oscillators.The beneficial effects of the utility model are：There is provided a kind of all channel antenna simple in construction for being easy to make, antenna oscillator is in plane, it is easy to metal plate punching to process, the top of two antenna oscillators is angled along its length to be arranged on the support provided with boss, the uniformity of antenna structure size is ensure that, is met to the wide band design requirement of antenna.
Description
Technical field
The utility model is related to antenna structure field, refers in particular to a kind of log-periodic antenna.
Background technology
Antenna system is the important component for constituting communication UNICOM, and the mutual of energy signal is realized by electromagnetic wave propagation
Change, it may be said that antenna is a kind of energy converter.According to the difference of directionality, antenna have omnidirectional and orientation two kinds, omnidirectional antenna,
Show as 360 ° of all homogeneous radiations on figure in the horizontal direction, that is, it is usually described non-directional, on height pattern
The wave beam of one fixed width is shown as, generally lobe width is smaller, gain is bigger；Directional aerial then refers at some
Or launch on certain several specific direction and receive electromagnetic wave ability it is especially strong, and launch in other directions and receive electromagnetism
The ability of ripple is zero or a kind of minimum antenna, is to increase effective utilization of radiant power using the purpose of directional transmitting antenna
Rate, increases confidentiality.
Modern City Building is more and more, more and more intensive, the radio signal of mobile communication therebetween by stopping and
Decay, builds many using armored concrete as skeleton in addition, and totally enclosed finishing, the shielding and decay to radio signal is very tight
Weight.The bottom of some high-rises, signal is generally very weak, there is blind area, such as underground parking, underground station, subway tunnel
Place etc..Center in big and medium-sized cities, base station density is all than larger, and average website is less than 1 kilometer, so get in
Signal generally compares mixed and disorderly and unstable.Because how high-rise the urban architecture of China is, the signal for being supplied to interior by outdoor station covers
Cover many limitations.Quality to ensure in-door covering, outdoor interference will be difficult to control to, and influence integrated planning and the appearance of network
Amount.Therefore, the main method for solving in-door covering is exactly to build microcellular mobile communication system.Increase antenna amount in systems
With the channel of antenna.
It is with low cost according to that the characteristics of multisystem multiband, should be partial to day line options in mobile communication at present, refer to
The all frequency bands antenna marked, increases all frequency bands antenna distribution density, is to improve network quality most to have effective means soon.In this portion
Divided antenna typically requires possess medium gain, relatively wide wave beam, reaches that covering is such as on a large scale：Wall aerial, logarithm period
Antenna etc., wherein, log-periodic antenna is one kind of directional aerial, is usually used in indoor distribution and elevator signal covering, is a kind of
All channel antenna, or perhaps a kind of antenna unrelated with frequency.
Utility model content
Technical problem to be solved in the utility model is：There is provided a kind of broadband simple in construction for possessing medium gain low
Cost log-periodic antenna.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of log-periodic antenna, including
Two antenna oscillators, support and base, two antenna oscillators include vibrator body and oscillator arms, the both sides of the vibrator body
The oscillator arms of alternate shape are provided with along its length, and the length of oscillator arms is successively decreased, shaken one by one by the bottom of vibrator body to top
Sub- arm successively decreases one by one to the spacing on the top of vibrator body, and oscillator arms are in integrative-structure with the vibrator body, and the antenna shakes
The top of the vibrator body of son is provided with power feed hole；
One antenna oscillator is installed on the front side of the support, middle shaft rotation of another antenna oscillator along vibrator body
180 degree, is installed on the rear side of the support, and two antenna oscillators are set in angle along its length, wherein, two antenna oscillators
Top be smaller than bottom spacing；
The base is arranged at the bottom of the support, and the bottom with two antenna oscillators is connected respectively.
Further, the width of the extraordinarily vibrator body of the two of the length of the oscillator arms of each antenna oscillator and next oscillator arms
Length two extraordinarily the width of vibrator body ratio be definite value τ；The midpoint of the oscillator arms of each antenna oscillator shakes described in
The midpoint of the spacing on the top of sub- main body and next oscillator arms to the ratio of the spacing on the top of the vibrator body be definite value τ,
The definite value τ is the multiple of relevant work frequency.
Further, the projection of the vibrator body of two antenna oscillators on the bracket is overlapped.
Further, the angle of two antenna oscillators along its length is 2-4 degree.
Further, the front side of the support and rear side are provided with some boss, and the antenna oscillator is installed provided with corresponding
Hole.
Further, the top of the vibrator body of one of antenna oscillator is provided with bent projection, the power feed hole
It is arranged in the projection.
The beneficial effects of the utility model are：There is provided a kind of all channel antenna simple in construction for being easy to make, pass through
Oscillator arms are arranged to the both sides of antenna oscillator main body in alternate shape, antenna oscillator is easy to metal plate punching to process in plane, then
Angled along its length be arranged in the top of two antenna oscillators is provided with the support of boss, it is ensured that antenna structure size
Uniformity, presented by the antenna oscillator main body coupling excitation be arrangeding in parallel between log-periodic antenna corresponding frequencies oscillator arms
Cross feed between electricity, adjacent vibration generators arm, meets to the wide band design requirement of antenna.
Brief description of the drawings
Concrete structure of the present utility model is described in detail below in conjunction with the accompanying drawings：
Fig. 1 is log-periodic antenna structural representation of the present utility model；
Fig. 2 is the antenna oscillator structural representation of log-periodic antenna of the present utility model；
Fig. 3 is the supporting structure schematic diagram of log-periodic antenna of the present utility model；
Fig. 4 is the top partial structural diagram of log-periodic antenna of the present utility model；
Fig. 5 is each oscillator arm lengths schematic diagram of log-periodic antenna of the present utility model；
Fig. 6 for log-periodic antenna of the present utility model each oscillator arms to antenna top spacing schematic diagram；
1- antenna oscillators；2- supports；3- bases；
11- vibrator bodies；12- oscillator arms；13- mounting holes；14- power feed holes；15- is raised；
21- boss.
Embodiment
To describe technology contents of the present utility model, construction feature, the objects and the effects in detail, below in conjunction with implementation
Mode simultaneously coordinates accompanying drawing to be explained in detail.
Fig. 1 is referred to Fig. 4, a kind of log-periodic antenna, including two antenna oscillators 1, support 2 and base 3, two days
Linear oscillator 1 includes vibrator body 11 and oscillator arms 12, and the both sides of the vibrator body 11 are provided with alternate shape along its length
(" alternate " be used to describe in every stipes or minor matters in botany only one piece of leave, and adjacent two panels leaf length is in stem or branch
Relative both sides phyllotaxy) oscillator arms 12, the length of oscillator arms 12 successively decreased one by one by the bottom of vibrator body 11 to top,
Oscillator arms 12 are successively decreased one by one to the spacing on the top of vibrator body 11, and oscillator arms 12 are in integrative-structure with the vibrator body 11,
The top of the vibrator body 11 of the antenna oscillator 1 is provided with power feed hole 14；
One antenna oscillator 1 is installed on the front side of the support 2, another axis of antenna oscillator 1 along vibrator body 11
180 degree is rotated, the rear side of the support 2 is installed on, two antenna oscillators 1 are set in angle along its length, wherein, two days
The top of linear oscillator 1 is smaller than bottom spacing；
The base 3 is arranged at the bottom of the support 2, and the bottom with two antenna oscillators 1 is connected respectively.
It was found from foregoing description, the beneficial effects of the utility model are：There is provided it is a kind of it is simple in construction be easy to make
All channel antenna, by the way that oscillator arms to be arranged to the both sides of antenna oscillator main body in alternate shape, antenna oscillator is easy in plane
Metal plate punching is processed, then angled along its length be arranged in the top of two antenna oscillators is provided with the support of boss, is protected
The antenna oscillator by be arrangeding in parallel between the uniformity of antenna structure size, log-periodic antenna corresponding frequencies oscillator arms is demonstrate,proved
Main body coupling excitation is fed, cross feed between adjacent vibration generators arm, is met to the wide band design requirement of antenna.
Embodiment 1
The extraordinarily width of vibrator body 11 of the two of the length of the oscillator arms 12 of each antenna oscillator and next oscillator arms 12
The ratio of the extraordinarily width of vibrator body 11 of the two of length is definite value τ；The midpoint of the oscillator arms 12 of each antenna oscillator is described in
Ratio of the midpoint of the spacing on the top of vibrator body 11 and next oscillator arms 12 to the spacing on the top of the vibrator body 11
For definite value τ, the definite value τ is the multiple of relevant work frequency.
The oscillator arms of the antenna oscillator are provided with nine, including the first oscillator arms to the 9th oscillator arms, wherein the first oscillator
Arm, the 3rd oscillator arms, the 5th oscillator arms, the 7th oscillator arms and the 9th oscillator arms are arranged at the vibrator body of the antenna oscillator
Side；Second oscillator arms, the 4th oscillator arms, the 6th oscillator arms and the 8th oscillator arms are arranged at the vibrator body of the antenna oscillator
Opposite side,
Wherein, the first oscillator arms are close to the bottom of the vibrator body, and the 9th oscillator arms are close to the top of the vibrator body
End；
The width of the extraordinarily vibrator body of the two of the length of first oscillator arms is L1, and the two of the length of the second oscillator arms extraordinarily shakes
The width of sub- main body be L2, by that analogy, the length of the 9th oscillator arms two extraordinarily vibrator bodies width be L9, L1, L2,
Relation between L3, L4, L5, L6, L7, L8 and L9 is as follows：
L1/L2=L2/L3=L3/L4=L4/L5=L5/L6=L6/L7=L7/L8=L8/L9=τ；
The spacing on the midpoint of the first oscillator arms to the top of the vibrator body is D1, and the midpoint of the second oscillator arms is described in
The spacing on the top of vibrator body is D2, and by that analogy, the spacing on midpoint to the vibrator body top of the 9th oscillator arms is
D9, the relation between D1, D2, D3, D4, D5, D6, D7, D8 and D9 is as follows：
D1/D2=D2/D3=D3/D4=D4/D5=D5/D6=D6/D7=D7/D8=D8/D9=τ；
τ is the multiple of relevant work frequency, and in this case, the working frequency of log-periodic antenna is between 800MHz-2700MHz
Between.
Embodiment 2
Projection of the vibrator body 11 of two antenna oscillators 1 on the support 2 is overlapped.
Need to feed by parallel lines coupling excitation between the oscillator arms of corresponding frequencies, as the oscillator master of two antenna oscillators
When projection of the body on support is overlapped, the best results that coupling excitation is fed between oscillator arms.
Embodiment 3
The angle of two antenna oscillators 1 along its length is 2-4 degree.
The value of angle is depended on according to Antenna Design bandwidth in the bandwidth of antenna, the present embodiment, and angle value is 2-4 degree
For antenna optimal design effect.
Embodiment 4
The front side of the support 2 and rear side are provided with some boss 21, and the antenna oscillator 1 is provided with corresponding mounting hole 13.
Cylindrical boss is designed on support, is easy to fixed and assembles antenna oscillator, antenna oscillator bottom is connected with base,
The fixed effect of antenna oscillator can be strengthened, antenna is additionally provided with the outer cover of unshielded function, protection comprehensively can be provided for antenna.
Embodiment 5
The top of the vibrator body 11 of one of antenna oscillator 1 is provided with bent projection 15, and the power feed hole 14 is set
It is placed on described raised 15.
Log-periodic antenna need to be transmitted feed by feeder line, and two antenna oscillators are connected to cored wire and the shielding of feeder line respectively
Line, sets raised and 90 degree of bending on the top of the vibrator body of antenna oscillator, is easy to antenna to be welded with feeder line.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (6)
1. a kind of log-periodic antenna, it is characterised in that：Including two antenna oscillators, support and base, two antenna oscillators are equal
Including vibrator body and oscillator arms, the both sides of the vibrator body are provided with the oscillator arms of alternate shape, oscillator arms along its length
Length successively decreased one by one by the bottom of vibrator body to top, the spacing on the top of oscillator arms to vibrator body is successively decreased one by one, is shaken
Sub- arm is in integrative-structure with the vibrator body, and the top of the vibrator body of the antenna oscillator is provided with power feed hole；
One antenna oscillator is installed on the front side of the support, middle shaft rotation 180 degree of another antenna oscillator along vibrator body,
The rear side of the support is installed on, two antenna oscillators are set in angle along its length, wherein, the top of two antenna oscillators
It is smaller than bottom spacing；
The base is arranged at the bottom of the support, and the bottom with two antenna oscillators is connected respectively.
2. log-periodic antenna as claimed in claim 1, it is characterised in that：The two of the length of the oscillator arms of each antenna oscillator
The ratio of the extraordinarily width of vibrator body and the two extraordinarily width of vibrator body of the length of next oscillator arms is definite value τ；Each
The midpoint of the oscillator arms of antenna oscillator is to the midpoint of spacing and next oscillator arms on the top of the vibrator body to the oscillator
The ratio of the spacing on the top of main body is definite value τ, and the definite value τ is the multiple of relevant work frequency.
3. log-periodic antenna as claimed in claim 1, it is characterised in that：The vibrator body of two antenna oscillators is in the branch
Projection on frame is overlapped.
4. log-periodic antenna as claimed in claim 1, it is characterised in that：The angle of two antenna oscillators along its length is
2-4 degree.
5. log-periodic antenna as claimed in claim 1, it is characterised in that：The front side of the support and rear side are provided with some convex
Platform, the antenna oscillator is provided with corresponding mounting hole.
6. log-periodic antenna as claimed in claim 1, it is characterised in that：The top of the vibrator body of one of antenna oscillator
End is provided with bent projection, and the power feed hole is arranged in the projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720157452.XU CN206490177U (en) | 2017-02-21 | 2017-02-21 | Log-periodic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720157452.XU CN206490177U (en) | 2017-02-21 | 2017-02-21 | Log-periodic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490177U true CN206490177U (en) | 2017-09-12 |
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ID=59764242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720157452.XU Expired - Fee Related CN206490177U (en) | 2017-02-21 | 2017-02-21 | Log-periodic antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN206490177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449599A (en) * | 2018-10-31 | 2019-03-08 | 深圳市统先科技股份有限公司 | A kind of Analysis of Dual-Polarization LPDA ultra-wide band structure |
| CN112510373A (en) * | 2020-10-30 | 2021-03-16 | 西安方元明科技股份有限公司 | Log-periodic antenna for receiving front end of jammer |
-
2017
- 2017-02-21 CN CN201720157452.XU patent/CN206490177U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449599A (en) * | 2018-10-31 | 2019-03-08 | 深圳市统先科技股份有限公司 | A kind of Analysis of Dual-Polarization LPDA ultra-wide band structure |
| CN109449599B (en) * | 2018-10-31 | 2020-08-07 | 深圳市统先科技股份有限公司 | Dual-polarization log-periodic antenna ultra-wideband structure |
| CN112510373A (en) * | 2020-10-30 | 2021-03-16 | 西安方元明科技股份有限公司 | Log-periodic antenna for receiving front end of jammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |