CN205985358U - Wide band type log periodic antenna - Google Patents
Wide band type log periodic antenna Download PDFInfo
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- CN205985358U CN205985358U CN201620926019.3U CN201620926019U CN205985358U CN 205985358 U CN205985358 U CN 205985358U CN 201620926019 U CN201620926019 U CN 201620926019U CN 205985358 U CN205985358 U CN 205985358U
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- radiation
- radiant body
- pressing seat
- coaxial cable
- wire pressing
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Abstract
The utility model discloses a wide band type log periodic antenna, including bottom plate and radiating element, this radiating element includes first irradiator and the second irradiator that links to each other with the bottom plate, all is equipped with a plurality of radiation arm on this first irradiator and the second irradiator, each radiates the arm and all parallels with the bottom plate, it is especial, near being equipped with the radiation piece that parallels with the bottom plate on a set of radiation arm of bottom plate, this radiation piece is located the terminal of radiation arm or is close to the end of radiation arm, this radiation piece crossing and be formed with contained angle alpha with the radiation arm, 30 <= alpha <= 90. The utility model has the advantages of compact structure, frequency band width, equipment facility.
Description
Technical field
This utility model is related to communication field, especially relates to a kind of wideband type log-periodic antenna.
Background technology
Log-periodic antenna is a kind of common antenna, due to its good broadband character, in shortwave, ultrashort involves microwave
Obtain in wavelength band and be widely applied, such as the communication antenna of antenna propagation, the reception antenna of TV master antenna system and throwing
Radiating element of the primary radiator of object plane or perspective antenna or phased array antenna etc..
At present, existing log-periodic antenna typically adopts the extremely sub- logarithm period of Rhizoma Nelumbinis as radiant body, specifically, this spoke
By a vertical tube and the plural number that is symmetrically set on vertical tube forms beam to transverse tube.Along the axis direction of vertical tube, plural number is to transverse tube
Length from top to bottom increase successively.And in order to obtain wider frequency band, existing log-periodic antenna is often with increased in size
Cost, extends the length to transverse tube for the plural number, seriously limits the integrated application of miniaturized system.
Additionally, existing log-periodic antenna, in order to ensure intermodulation index, typically passed through using resistant to elevated temperatures coaxial cable
Welding manner is connected with vertical tube.Resistant to elevated temperatures cable cost is higher, and hardness is higher；When coaxial cable is longer, antenna
Easily sprained during use.And the cable cost of non-refractory is relatively low, cable is also more soft, just meets above-mentioned city
Field demand.But just because of the reason non-refractory, leading in process of production, welding is difficult to, and three ranks to antenna
Intermodulation index is also difficult to ensure that.
For this reason, it is necessary to improve to existing log-periodic antenna.
Utility model content
It is right that the purpose of this utility model is to provide that a kind of compact conformation, bandwidth, assembling be convenient, intermodulation index is good
One number time antenna.
To achieve these goals, this utility model adopts the following technical scheme that：
A kind of wideband type log-periodic antenna, including base plate and radiating doublet；This radiating doublet includes being connected with base plate
First radiant body and the second radiant body, this first radiant body and the second radiant body are equipped with several radiation arms；Each radiation arm
All parallel with base plate；Particularly, it is provided with, near one group of radiation arm of base plate, the radiation block paralleled with base plate；This radiation
Block is located at end or the end near radiation arm of radiation arm；This radiation block is intersected with radiation arm and is formed with angle α, 30 °
≤α≤90°.
The end of above-mentioned radiation arm refers to the one end on radiation arm farthest away from corresponding radiant body.
Above-mentioned one group of radiation arm near base plate refers to be arranged on the first radiant body and the radiation arm near base plate
With the radiation arm being arranged on the second radiant body and near base plate.
In this log-periodic antenna, the first radiant body and the second radiant body are arranged vertically on base plate, and each radiation arm
Then it is transversely arranged on corresponding radiant body.The radiation arm being arranged on the first radiant body and the spoke being arranged on the second radiant body
Penetrate arm configuration identical, in opposite direction.Along the axis direction of radiant body, the length of every group of radiation arm is from top to bottom gradually increased.
Radiation block can be newly-increased spare and accessory parts, by operations such as welding, is fixed on corresponding radiation arm.Radiation block
Can be integrally formed with corresponding radiation arm, such as by the end pair of corresponding radiation arm (i.e. near one group of radiation arm of base plate)
Folding, so as to form radiation block, is intersected with the main body of this radiation arm and is formed with angle α；Or correspond in the punching press of corresponding position
Radiation arm, and the sheet shaped piece bending by punching press gained, thus form the radiation block intersecting and being formed with angle α with radiation arm.
By the radiation block of impact style gained, radiate block and still keep and being integrally formed of corresponding radiation arm, and on corresponding radiation arm
Emptying aperture can be formed with, the structure of this emptying aperture is corresponding with the structure of radiation block.
By the radiation block being arranged on radiation arm, the length of the radiation arm of this log-periodic antenna is increased, thus
The frequency band of this log-periodic antenna is made to be widened.Although being provided with radiation block on radiation arm, antenna integrally still can use original
Outer housing carry out cooperation and install, the structure of antenna still keeps compact, and its overall apparent volume does not change, and is conducive to
The integrated application of miniaturized system.
For realizing under more excellent intermodulation index, the coaxial cable of non-refractory and the assembling of radiant body, this log-periodic antenna
May include line pressing component, this line pressing component includes line ball set and the wire pressing seat being connected with the first radiant body；It is provided with this wire pressing seat
Coaxial cable via, the dielectric layer of coaxial cable passes through this coaxial cable via, the inner wire of coaxial cable and the second radiant body
It is connected；This line ball is set on outside wire pressing seat, wraps up wire pressing seat and coaxial cable, makes outer conductor and the wire pressing seat phase of coaxial cable
Connect, and so that coaxial cable is relatively fixed with wire pressing seat.Using this line pressing component, coaxial cable need not weld, you can completes and spoke
The assembling of beam, thus simplifying the assembling process of antenna, has reached good connection effect, solves the more excellent intermodulation of realization and refers to
Non-refractory cable under mark is used for a difficult problem for the type antenna.
This utility model has the advantages that compact conformation, bandwidth, assembling are convenient.
Brief description
Fig. 1 is the schematic diagram of log-periodic antenna in this utility model embodiment 1；
Fig. 2 is the schematic diagram of radiating doublet in this utility model embodiment 1；
Fig. 3 is the partial enlarged drawing of A in Fig. 2；
Fig. 4 is the schematic diagram of log-periodic antenna in this utility model embodiment 2.
Description of reference numerals：1- base plate；2- radiating doublet；3- coaxial cable；4- first radiant body；5- second radiant body；
6- radiation arm；7- radiates block；8- emptying aperture；9- line ball set；10- wire pressing seat；11- coaxial cable via；12- insulating barrier；Lead in 13-
Body；14- outer conductor；15- sheath；16- fixed block；17- rabbets room；18- contiguous block；19- inner wire via.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further described.
Embodiment 1：
Log-periodic antenna as shown in Figures 1 to 3, in the present embodiment 1, log-periodic antenna is by base plate 1, radiating doublet 2
Constitute with coaxial cable 3, wherein,
Radiating doublet 2 includes the first radiant body 4 being connected with base plate 1 and the second radiant body 5, the first radiant body 4 and second
15 radiation arms 6 are equipped with radiant body 5；First radiant body 4 and the second radiant body 5 in tubular construction, are arranged vertically at base plate 1
On；Each radiation arm 6 is paralleled with base plate 1, along the axis direction of the first radiant body 4 and the second radiant body 5, the length of each radiation arm 6
Degree is from top to bottom gradually increased；The radiation arm 6 being arranged on the first radiant body 4 and the radiation arm 6 being arranged on the second radiant body 5
Structure is identical, in opposite direction.
One group of radiation arm 6 near base plate 1 is provided with radiation block 7, that is, be arranged on the first radiant body 4 and the bottom of near
The radiation arm 6 of plate 1 radiates block 7, this radiation with being arranged on the second radiant body 5 and being equipped near on the radiation arm 6 of base plate 1
The end of the close corresponding radiation arm 6 of block 7, that is, farthest away from one end of corresponding radiant body.In the present embodiment 1, this radiation block 7 passes through punching
Pressure mode gained, this group radiation arm 6 near base plate 1 is formed with emptying aperture 8 corresponding with radiating block 7 structure.Radiation block 7 and bottom
Plate 1 is parallel and intersects with corresponding radiation arm 6, its intersecting angle α=90 °.
In the present embodiment 1, this log-periodic antenna also includes line pressing component.This line pressing component is by line ball set 9 with first
The wire pressing seat 10 that radiant body 4 is connected is constituted, and wherein, wire pressing seat 10 is in the form of a column structure, is provided with along wire pressing seat 10 in wire pressing seat 10
Axis direction runs through the coaxial cable via 11 of whole wire pressing seat 10；Line ball covers 9 cylindrical structures, and this line ball set 9 is wrapped in
Outside wire pressing seat 10, and it is pressed together on wire pressing seat 10.
The dielectric layer of coaxial cable 3, that is, the insulating barrier 12 of coaxial cable 3 and inner wire 13 stretch into coaxial cable via 11
Interior, and pass through this coaxial cable via 11, so that the inner wire 13 of coaxial cable 3 is connected with the second radiant body 5.And line ball set 9
Then wrap up the sheath 15 (i.e. the outermost layer of coaxial cable 3) of wire pressing seat 10 and coaxial cable 3 simultaneously, so that the outer of coaxial cable 3 is led
Body 14 is connected with wire pressing seat 10, and then so that coaxial cable 3 is relatively fixed with wire pressing seat 10, completes the installation of coaxial cable 3.
For realizing being connected of wire pressing seat 10 and radiant body 4, in the present embodiment 1, the first radiant body 4 is provided with fixed block
16, and the interlocking room 17 matched with this fixed block 16 is then provided with wire pressing seat 10.It is arranged at the fixed block 16 on radiant body 4
Embed in this interlocking room 17, so that wire pressing seat 10 is connected with radiant body 4.
Additionally, for making the inner wire 13 of coaxial cable 3 and the second radiant body 5 be connected, in the present embodiment 1, the second spoke
The top of beam 5 is additionally provided with contiguous block 18, and this contiguous block 18 is provided with the inner wire matching with the inner wire 13 of coaxial cable 3
Via 19.The inner wire 13 of coaxial cable 3 passes through inner wire via 19, is connected with the second radiant body 5.
The surface structure size of the log-periodic antenna of the present embodiment 1, extremely close with existing log-periodic antenna, but
The frequency band of the log-periodic antenna of the present embodiment 1 is wider, and the specifications parameter of the such as log-periodic antenna of the present embodiment 1 adopts channel
The specifications parameter of the existing log-periodic antenna that bandwidth initiates from 700MHz, and pass through the radiation block 7 of setting in the present embodiment 1,
The channel bandwidth of the log-periodic antenna of the present embodiment 1 can spread to 600MHz, thus having broader frequency band.
Embodiment 2：
As shown in figure 4, the present embodiment 2 is with the difference of embodiment 1, in the present embodiment 2, radiation block 7 is arranged on
Near the end of one group of radiation arm 6 of base plate 1, and radiation block 7 is integrally formed with this group radiation arm 6.
Better embodiment of the present utility model that what this specification was enumerated be only, all in operation principle of the present utility model and
The equivalent technologies conversion done under thinking, is accordingly to be regarded as protection domain of the present utility model.
Claims (7)
1. a kind of wideband type log-periodic antenna, including base plate and radiating doublet；Described radiating doublet includes being connected with base plate
First radiant body and the second radiant body, described first radiant body and the second radiant body are equipped with several radiation arms；Described spoke
Penetrate arm parallel with base plate it is characterised in that：One group of radiation arm near base plate is provided with the radiation block paralleled with base plate；
Described radiation block is located at end or the end near radiation arm of radiation arm；Described radiation block is intersected with radiation arm and is formed with
Angle α, 30 °≤α≤90 °.
2. wideband type log-periodic antenna according to claim 1 it is characterised in that：Described radiation block and corresponding radiation
Arm is integrally formed.
3. wideband type log-periodic antenna according to claim 2 it is characterised in that：Formed free on described radiation arm
Hole；The structure of described emptying aperture is corresponding with the structure of radiation block.
4. wideband type log-periodic antenna according to claim 1 it is characterised in that：Including coaxial cable and line ball group
Part；Described line pressing component includes line ball set and wire pressing seat；Described wire pressing seat is connected with the first radiant body, is provided with coaxial in wire pressing seat
Cable via；The dielectric layer of described coaxial cable passes through described coaxial cable via, the inner wire of described coaxial cable and second
Radiant body is connected；Described line ball is set on outside wire pressing seat, wraps up wire pressing seat and coaxial cable.
5. wideband type log-periodic antenna according to claim 4 it is characterised in that：Described wire pressing seat is in the form of a column structure；
It is provided with the coaxial cable via that the axis direction along wire pressing seat runs through whole wire pressing seat in described wire pressing seat.
6. wideband type log-periodic antenna according to claim 4 it is characterised in that：Described first radiant body is provided with solid
Determine block；Described fixed block is provided with the interlocking room matched with described wire pressing seat.
7. wideband type log-periodic antenna according to claim 4 it is characterised in that：Described second radiant body is provided with even
Connect block；Described contiguous block is provided with the inner wire via matching with the inner wire of described coaxial cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620926019.3U CN205985358U (en) | 2016-08-23 | 2016-08-23 | Wide band type log periodic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620926019.3U CN205985358U (en) | 2016-08-23 | 2016-08-23 | Wide band type log periodic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985358U true CN205985358U (en) | 2017-02-22 |
Family
ID=58033086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620926019.3U Active CN205985358U (en) | 2016-08-23 | 2016-08-23 | Wide band type log periodic antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985358U (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 |
| CN110867639A (en) * | 2019-11-26 | 2020-03-06 | 深圳市威富通讯技术有限公司 | Automatic array-forming control device and method for log periodic antenna array |
-
2016
- 2016-08-23 CN CN201620926019.3U patent/CN205985358U/en active Active
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 |
| CN110867639A (en) * | 2019-11-26 | 2020-03-06 | 深圳市威富通讯技术有限公司 | Automatic array-forming control device and method for log periodic antenna array |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |