CN110098463A - A kind of helical antenna of varying pitch - Google Patents
A kind of helical antenna of varying pitch Download PDFInfo
- Publication number
- CN110098463A CN110098463A CN201910499350.XA CN201910499350A CN110098463A CN 110098463 A CN110098463 A CN 110098463A CN 201910499350 A CN201910499350 A CN 201910499350A CN 110098463 A CN110098463 A CN 110098463A
- Authority
- CN
- China
- Prior art keywords
- support cylinder
- dielectric support
- balun
- screw pitch
- column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000005855 radiation Effects 0.000 description 5
- 239000000969 carrier Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of helical antennas of varying pitch, including the pedestal as main carrying, dielectric support cylinder is fixed on pedestal, dielectric support cylinder is the tapered hollow cylinder of gradual change necking from the bottom to top, the spiral arm that two column that spiral on dielectric support cylinder rise in the shape of a spiral, two column spiral arms extend to dielectric support cylinder top to from dielectric support cylinder bottom end in derotation；Channels coaxial balun is coaxially equipped in dielectric support cylinder, the top and bottom end of two column spiral arms are all electrically connected with channels coaxial balun respectively；The screw pitch of the two column spiral arms is identical, and the screw pitch of each column spiral arm is all variation screw pitch.It is corresponding wide to match different aerial band to use different ladders, the broad beam characteristic of single unit system is good.
Description
Technical field
The invention belongs to communication device technology fields, are related to a kind of helical antenna of varying pitch.
Background technique
At present circular polarization wide beam antenna in use, mainly use have microstrip antenna, helical antenna, wait days
Line form.Microstrip antenna has structure simple, and the low advantage of section generallys use high dielectric constant printed board to reduce antenna opening
Face size reaches the requirement of broad beam, but will cause aerial loss increase in this way, and the efficiency of antenna is lower, while broad beam is micro-
Band antenna is influenced vulnerable to installation environment, and antenna radiation pattern is caused to deform.Cross-shaped oscillator antenna is as broad beam antenna in use, day
Line height is higher, while needing to increase circular polarisation network, and equipment is relative complex.Helical antenna as broad beam antenna in use,
The form generallyd use be four-arm spiral antenna or bifilar helical antenna, four-arm spiral antenna size is small, it is compact-sized, it can be achieved that
Hemispherical radiation wave beam and good wide angle axis ratio characteristic, radiance is smaller by carriers affect, but the beamwidth of antenna is relatively narrow, uncomfortable
Requirement for broad-band antenna；Bifilar helical antenna is compact-sized, it can be achieved that hemispherical radiation wave beam and good wide angle axis
Ratio characteristic, radiance is smaller by carriers affect, while having good bandwidth characteristic, but antenna height is higher, therefore, grinds
It is simple to study carefully a kind of structure, broad beam characteristic is good, and the circular polarization wide beam antenna form with good bandwidth characteristic is necessary
's.
Summary of the invention
It is an object of the invention to the taper bifilar helical antennas using varying pitch, obtain a kind of a lower height of broadband circle
Polarize broad beam antenna, to reach excellent electric property.
Based on above-mentioned purpose, present invention provide the technical scheme that
A kind of helical antenna of varying pitch is fixed with dielectric support cylinder including the pedestal as main carrying on pedestal,
Dielectric support cylinder is the tapered hollow cylinder of gradual change necking from the bottom to top, and spiraling on dielectric support cylinder has two column in the shape of a spiral
The spiral arm of rising, two column spiral arms extend to dielectric support cylinder top to from dielectric support cylinder bottom end in derotation；
Coaxially be equipped with channels coaxial balun in dielectric support cylinder, the top and bottom end of two column spiral arms all respectively with
Channels coaxial balun is electrically connected；
The screw pitch of the two column spiral arms is identical, and the screw pitch of each column spiral arm is all variation screw pitch.
Further, the circling ring number on dielectric support cylinder of the two column spiral arms is four circles, forms three differences
The screw pitch of size.
Further, gap between the spiral shell of spiral arm is defined as lower screw pitch, middle screw pitch, upper screw pitch from bottom to top, screw pitch is big
Small relationship is that middle screw pitch is greater than upper screw pitch greater than lower screw pitch.
Further, the bottom end of the two column spiral arms penetrates electric with the bottom of channels coaxial balun in dielectric support cylinder
Property connection, the top of the top of the two column spiral arm and channels coaxial balun is electrically connected.
Further, the starting point of the two column spiral arms is mutually mirror symmetry relationship, and the midpoint of two column spiral arms is mutually
Radial symmetric relationship.
Further, the channels coaxial balun includes that periphery is arranged in as the balun support tube of main supporter and inserts
Needle, the balun support tube are coaxially threaded through in dielectric support cylinder, and the top of balun support tube is stretched out outside dielectric support cylinder, are inserted
Coaxial needle is worn into balun support tube, and there are gaps to form annular feed chamber between contact pin and balun support tube.
Further, the bottom end of the contact pin is equipped with for guaranteeing the consistent ladder boss of impedance matching.
The present invention has the advantages that for existing
It is corresponding wide to match different aerial band to use different ladders, the broad beam characteristic of single unit system is good.
The height of antenna is reduced by using the mode of varying pitch bifilar helical antenna.
Antenna uses taper-cylindricality composite construction, and structural stability is good, and pedestal is more stable, and structure is efficient, scientific.
Detailed description of the invention
Fig. 1 the structural representation of present invention；
Fig. 2 is overlooking structure figure of the invention；
Fig. 3 is cross-sectional view of the invention；
Fig. 4 is contact pin structure of the invention；
Fig. 5 is coiling loop structure figure of the present invention；
Wherein, dielectric support cylinder 1, spiral arm 2, pedestal 3, channels coaxial balun 4；
Specific embodiment
Below according to attached drawing 1-5, the present invention will be further described:
A kind of helical antenna of varying pitch is fixed with dielectric support cylinder including the pedestal 3 as main carrying on pedestal
1, dielectric support cylinder is the tapered hollow cylinder of gradual change necking from the bottom to top, and spiraling on dielectric support cylinder has two column helically
The spiral arm 2 that shape rises, two column spiral arms extend to dielectric support cylinder top to from dielectric support cylinder bottom end in derotation；
Channels coaxial balun 4 is coaxially equipped in dielectric support cylinder, the top and bottom end of two column spiral arms are all distinguished
It is electrically connected with channels coaxial balun；
As shown in Figure 1 and Figure 5, the screw pitch of the two column spiral arms is identical, and the screw pitch of each column spiral arm is all variation spiral shell
Away from.The circling ring number on dielectric support cylinder of the two column spiral arms is four circles, forms three different size of screw pitch regions,
Gap between the spiral shell of spiral arm is defined as lower screw pitch, middle screw pitch, upper screw pitch from bottom to top, pitch size relationship is that middle screw pitch is greater than
Upper screw pitch is greater than lower screw pitch.
The bottom end of the two column spiral arms penetrates in dielectric support cylinder and is electrically connected with the bottom of channels coaxial balun, institute
The top on the top and channels coaxial balun of stating two column spiral arms is electrically connected.
The starting point of the two column spiral arms is mutually mirror symmetry relationship, and the midpoint of two column spiral arms is mutually radial symmetric pass
System.
As shown in Figure 2 and Figure 4, the channels coaxial balun includes that periphery is arranged in support as the balun of main supporter
Cylinder and contact pin, the balun support tube are coaxially threaded through in dielectric support cylinder, and dielectric support is stretched out on the top of balun support tube
Cylinder is outer, and contact pin is coaxially worn into balun support tube, and there are gaps to form annular feed chamber, position between contact pin and balun support tube
Elbow is had in the top of contact pin, elbow is turned to balun support tube top and is bolted, and the bottom of contact pin has support, is inserted
Needle is coaxially installed in balun support tube by support, and channels coaxial balun is industry universal standard component in the prior art.
The bottom end of the contact pin is equipped with for guaranteeing the consistent ladder boss of impedance matching.
The working principle of this invention is the spiral arm radiation circularly polarised wave self-forming circularly polarised wave of bifilar helical antenna, is led to
The diameter for crossing the screw pitch and helix that change helix realizes the broad beam covering of antenna radiation pattern, special according to the spiral of spiral arm
Property, the dielectric support of helix is cone-rod structure, and the spiral arm upper end of antenna is connected to the upper end of channels coaxial balun, together
Axis slots balun slotting length as a quarter of center wavelength, and the impedance transformation of antenna is realized by channels coaxial balun, by
High impedance becomes medium or low resistance and resists, and the short stepped impedance matching section for passing through coaxial balun lower end of slotting realizes the impedance matching of antenna.
Finally obtain a kind of broadband circle polarized broad beam antenna of excellent electrical properties.
Claims (7)
1. a kind of helical antenna of varying pitch, including the pedestal as main carrying, it is characterised in that: be fixed with Jie on pedestal
Matter support tube, dielectric support cylinder are the tapered hollow cylinder of gradual change necking from the bottom to top, and spiraling on dielectric support cylinder has two
The spiral arm risen in the shape of a spiral is arranged, two column spiral arms extend to dielectric support cylinder top to from dielectric support cylinder bottom end in derotation
End；
Coaxially it is equipped with channels coaxial balun in dielectric support cylinder, the top and bottom end of two column spiral arms are all respectively and coaxially
Balun of slotting is electrically connected；
The screw pitch of the two column spiral arms is identical, and the screw pitch of each column spiral arm is all variation screw pitch.
2. a kind of helical antenna of varying pitch according to claim 1, it is characterised in that: the two column spiral arms
Circling ring number is four circles on dielectric support cylinder, forms three different size of screw pitch.
3. a kind of helical antenna of varying pitch according to claim 2, it is characterised in that: from bottom to top by the spiral shell of spiral arm
Between gap be defined as lower screw pitch, middle screw pitch, upper screw pitch, pitch size relationship is that middle screw pitch is greater than upper screw pitch and is greater than lower screw pitch.
4. a kind of helical antenna of varying pitch according to claim 2, it is characterised in that: the bottom of the two column spiral arms
End penetrates in dielectric support cylinder and is electrically connected with the bottom of channels coaxial balun, the top of the two column spiral arm and channels coaxial
The top of balun is electrically connected.
5. a kind of helical antenna of varying pitch according to claim 1, it is characterised in that: the two column spiral arms rise
Point is mutually mirror symmetry relationship, and the midpoint of two column spiral arms is mutually radial symmetric relationship.
6. a kind of helical antenna of varying pitch according to claim 1, it is characterised in that: the channels coaxial balun packet
The balun support tube and contact pin that periphery is set as main supporter are included, the balun support tube is coaxially threaded through dielectric support
In cylinder, the top of balun support tube is stretched out outside dielectric support cylinder, and contact pin is coaxially worn into balun support tube, contact pin and balun branch
There are gaps to form annular feed chamber between support cylinder.
7. a kind of helical antenna of varying pitch according to claim 6, it is characterised in that: the bottom end of the contact pin is equipped with
For guaranteeing the consistent ladder boss of impedance matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499350.XA CN110098463A (en) | 2019-06-11 | 2019-06-11 | A kind of helical antenna of varying pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910499350.XA CN110098463A (en) | 2019-06-11 | 2019-06-11 | A kind of helical antenna of varying pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110098463A true CN110098463A (en) | 2019-08-06 |
Family
ID=67450636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910499350.XA Pending CN110098463A (en) | 2019-06-11 | 2019-06-11 | A kind of helical antenna of varying pitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110098463A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797639A (en) * | 2019-10-30 | 2020-02-14 | 湖南迈克森伟电子科技有限公司 | Four-arm helical antenna impedance transformation adjusting method |
| CN112134004A (en) * | 2020-09-25 | 2020-12-25 | 大连海事大学 | Wide-beam four-arm helical antenna with equal-flux radiation characteristic |
| CN112397890A (en) * | 2020-10-26 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Support medium, helical antenna and method for manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270248A1 (en) * | 2004-06-02 | 2005-12-08 | Wilhelm Michael J | Micro-helix antenna and methods for making same |
| CN104134858A (en) * | 2014-08-06 | 2014-11-05 | 西安电子科技大学 | Loop coupling broadband miniaturized conical helical antenna |
| CN209766622U (en) * | 2019-06-11 | 2019-12-10 | 中国电子科技集团公司第五十四研究所 | variable-pitch helical antenna |
-
2019
- 2019-06-11 CN CN201910499350.XA patent/CN110098463A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270248A1 (en) * | 2004-06-02 | 2005-12-08 | Wilhelm Michael J | Micro-helix antenna and methods for making same |
| CN104134858A (en) * | 2014-08-06 | 2014-11-05 | 西安电子科技大学 | Loop coupling broadband miniaturized conical helical antenna |
| CN209766622U (en) * | 2019-06-11 | 2019-12-10 | 中国电子科技集团公司第五十四研究所 | variable-pitch helical antenna |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110797639A (en) * | 2019-10-30 | 2020-02-14 | 湖南迈克森伟电子科技有限公司 | Four-arm helical antenna impedance transformation adjusting method |
| CN112134004A (en) * | 2020-09-25 | 2020-12-25 | 大连海事大学 | Wide-beam four-arm helical antenna with equal-flux radiation characteristic |
| CN112134004B (en) * | 2020-09-25 | 2022-07-19 | 大连海事大学 | Wide-beam four-arm helical antenna with equal-flux radiation characteristic |
| CN112397890A (en) * | 2020-10-26 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Support medium, helical antenna and method for manufacturing the same |
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