CN203983479U - A kind of novel ultra-wideband flat helical antenna of integrated barron structure - Google Patents
A kind of novel ultra-wideband flat helical antenna of integrated barron structure Download PDFInfo
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- CN203983479U CN203983479U CN201420400056.1U CN201420400056U CN203983479U CN 203983479 U CN203983479 U CN 203983479U CN 201420400056 U CN201420400056 U CN 201420400056U CN 203983479 U CN203983479 U CN 203983479U
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Abstract
The utility model discloses a kind of novel ultra-wideband flat helical antenna of integrated barron structure, comprise flat helical antenna, feed Ba Lun, microstrip line and medium substrate, described flat helical antenna comprises antenna one arm and antenna two arms, described antenna one arm and antenna two arms are just being printed on respectively medium substrate, reverse side, described antenna two arms are that antenna one arm obtains about initial point Rotate 180 degree, antenna one arm comprises Article 1 border and Article 2 border, described Article 2 border is that Article 1 border obtains about initial point 90-degree rotation, described antenna two arms are connected with the floor of feed Ba Lun, the common ground level that forms antenna, described antenna one arm is connected with the center conductor of feed Ba Lun by microstrip line.It is wide that the utility model antenna has arm, and the shorter feature of antenna arm, is easy to realize isoplanar feed.
Description
Technical field
The utility model relates to communication technical field, is specifically related to a kind of novel ultra-wideband flat helical antenna of integrated barron structure.
Background technology
Along with developing rapidly of Modern wireless communication technology, communication system is more and more higher to the requirement of antenna.On the one hand require broadband, wish that common antenna can support the radio communication of multiple frequency ranges simultaneously.Require on the other hand miniaturization, along with the fast development of high speed integrated circuit, system equipment is to integrated, and miniaturization integratedly constantly strides forward, and as the terminal of radio-based electronic devices, modern electronic equipment has proposed miniaturization, has been easy to integrated requirement antenna.
Flat helical antenna is a kind of conventional Broadband circularly polarized antenna.Traditional flat helical antenna mainly contains two kinds: planar equiangular spiral antenna and plane Archimedean spiral antenna.The required minimum dimension of these two kinds of antennas is all to be determined by the low-limit frequency of antenna work, and how under the requirement that meets properties in frequency band, reducing to greatest extent size is the focus of such antenna research.
Classical flat helical antenna, belongs to from complementary type both arms balanced feeding antenna, and therefore the theoretical impedance of antenna is 180 ohm, for realizing the balanced feeding of antenna and 50 ohm coaxial cable, must use feed Ba Lun.Typical helical antenna feeding network is transition line Ba Lun, and traditional Ba Lun is placed on the center of helical antenna conventionally, and perpendicular to helical antenna plane.Vertical benefit of placing Ba Lun is: the radiation characteristic on helical antenna affect minimum.But because Ba Lun length is larger, cause the longitudinal volume of helical antenna larger, therefore the method for vertical Ba Lun feed is to the manufacture of helical antenna and miniaturized system is integrated has caused inconvenience.The method of shortening vertical Ba Lun length and employing planar-fed structure becomes the study hotspot of helical antenna minification.
Two kinds of flat helical antennas of Classic couture, form is fixed, and has caused restriction to the research of helical antenna feed method.Under the condition of same size, the circular polarization bandwidth ratio Archimedes sky live width of Archimedes's antenna, but the arm of Archimedes's antenna is wide very narrow, and brachium is longer, is not easy to carry out isoplanar feed.
Utility model content
The shortcoming and deficiency that exist in order to overcome prior art, the utility model provides a kind of novel ultra-wideband flat helical antenna of integrated barron structure.
The utility model adopts following technical scheme:
A kind of novel ultra-wideband flat helical antenna of integrated barron structure, comprise flat helical antenna, feed Ba Lun, microstrip line and medium substrate, described feed Ba Lun comprises floor and center conductor, described floor is printed on the reverse side of medium substrate, described center conductor and microstrip line are printed on medium substrate front, described microstrip line is connected with center conductor, described flat helical antenna comprises antenna one arm and antenna two arms, described antenna one arm and antenna two arms are just being printed on respectively medium substrate, reverse side, described antenna two arms are that antenna one arm obtains about initial point Rotate 180 degree, antenna one arm comprises Article 1 border and Article 2 border, described Article 2 border is that Article 1 border obtains about initial point 90-degree rotation, described antenna two arms are connected with the floor of feed Ba Lun, the common ground level that forms antenna, described antenna one arm is connected with the center conductor of feed Ba Lun by microstrip line.
Described the first border is determined by following formula:
Wherein, r is the distance of the first borderline point to initial point, and φ is the anglec of rotation, r
0it is the internal diameter of antenna.
The characteristic impedance of described feed Ba Lun is index gradual change and changes.
Described antenna one arm is connected with the center conductor of feed Ba Lun by microstrip line, is specially: microstrip line along the center line of antenna two arms, extends to initial point in the front of medium substrate, is connected with antenna one arm by initial point.
The beneficial effects of the utility model:
(1) to have arm wide for the utility model antenna, and the shorter feature of antenna arm, is easy to realize isoplanar feed;
(2) by feed Ba Lun is designed in the conplane method of antenna, antenna and feed Ba Lun are integrated into a double-decker, have greatly reduced the longitudinal size of antenna, compact conformation;
(3) dexterously antenna two arms are printed on respectively to the two sides of medium sheet material, have avoided feed Ba Lun to be connected with the manual of antenna arm.
Brief description of the drawings
Fig. 1 is the structural representation of the novel ultra-wideband flat helical antenna of a kind of integrated barron structure of the utility model;
Fig. 2 is that Fig. 1 medium substrate front side metal covers schematic diagram;
Fig. 3 is that Fig. 1 medium substrate reverse side metal covers schematic diagram;
Fig. 4 is return loss simulation curve figure of the present utility model;
Fig. 5 is positive direction axial ratio simulation curve figure of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1-Figure 3, a kind of novel ultra-wideband flat helical antenna of integrated barron structure, comprise flat helical antenna, characteristic impedance value is the feed Ba Lun that index gradual change changes, microstrip line 5 and medium substrate 6, described feed Ba Lun comprises floor 4 and center conductor 3, center conductor 3 and the floor 4 of described feed Ba Lun are just being printed on respectively medium substrate 6, reverse side, conventional helical antenna two arms are printed on medium substrate the same face conventionally, in the utility model for fear of unnecessary connection work, antenna one arm 1 and antenna two arms 2 of flat helical antenna are just being printed on respectively medium substrate 6, reverse side, form double-deck integral structure with feed Ba Lun cleverly, described antenna two arms 2 are connected with the floor 4 of feed Ba Lun, the common ground level that forms antenna, described antenna one arm 1 is connected with the center conductor 3 of feed Ba Lun by microstrip line 5, be specially: microstrip line 5 in the front of medium substrate 6 along the center line of antenna two arms 2, extend to initial point, be connected with antenna one arm 1 by initial point, feed Ba Lun and flat helical antenna are printed on same plane, one end that feed Ba Lun is connected with coaxial line, characteristic impedance is 50 ohm.
Described antenna two arms 2 are that antenna one arm 1 obtains about initial point Rotate 180 degree, antenna one arm comprises Article 1 border 1A and Article 2 border 2A, described Article 2 border 2A is that Article 1 border 1A obtains about initial point 90-degree rotation, article two, boundary combinations has formed antenna one arm 1, and described Article 1 border is determined by following formula:
R is the distance of the borderline point of antenna to initial point,
the anglec of rotation, r
0it is the internal diameter of antenna.A, B, C, D is the constant for determining antenna size.
The formula of New Kind of Helix Antenna has 4 unknown parameters, if but the internal diameter r of definite antenna
0with external diameter r
1, the initial anglec of rotation
with the termination anglec of rotation
by simple calculating, 4 unknown parameters of antenna, can be reduced to two, and parameter D and A can calculate by the value of B, C:
In order to obtain the balance of axial ratio characteristic and brachium, calculate by Electromagnetic Simulation software, the value of optimization radiation characteristic A, D preferably time, and then obtain all parameters of antenna.The parameter using in simulation model in the present embodiment is r
0=0.2mm, φ
0=0, φ
1=3.75 π, B=4.6, C=3.
The integral structure of antenna of the present utility model and Ba Lun is 2.2 by relative dielectric constant, and thickness is 0.8mm, and loss tangent angle is not more than 0.001 F4B medium sheet material and is made.
Fig. 4 is return loss simulation curve figure of the present utility model, in 3-10GHz frequency range, and be all less than-10dB of return loss.Fig. 5 is positive direction axial ratio simulation curve figure of the present utility model, and in working band, axial ratio is all less than 3dB.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (3)
1. the novel ultra-wideband flat helical antenna of an integrated barron structure, comprise flat helical antenna, feed Ba Lun, microstrip line and medium substrate, described feed Ba Lun comprises floor and center conductor, described floor is printed on the reverse side of medium substrate, described center conductor and microstrip line are printed on medium substrate front, described microstrip line is connected with center conductor, it is characterized in that, described flat helical antenna comprises antenna one arm and antenna two arms, described antenna one arm and antenna two arms are just being printed on respectively medium substrate, reverse side, described antenna two arms are that antenna one arm obtains about initial point Rotate 180 degree, antenna one arm comprises Article 1 border and Article 2 border, described Article 2 border is that Article 1 border obtains about initial point 90-degree rotation, described antenna two arms are connected with the floor of feed Ba Lun, the common ground level that forms antenna, described antenna one arm is connected with the center conductor of feed Ba Lun by microstrip line.
2. the novel ultra-wideband flat helical antenna of a kind of integrated barron structure according to claim 1, is characterized in that, the characteristic impedance of described feed Ba Lun is index gradual change and changes.
3. the novel ultra-wideband flat helical antenna of a kind of integrated barron structure according to claim 1, it is characterized in that, described antenna one arm is connected with the center conductor of feed Ba Lun by microstrip line, be specially: microstrip line in the front of medium substrate along the center line of antenna two arms, extend to initial point, be connected with antenna one arm by initial point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400056.1U CN203983479U (en) | 2014-07-18 | 2014-07-18 | A kind of novel ultra-wideband flat helical antenna of integrated barron structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420400056.1U CN203983479U (en) | 2014-07-18 | 2014-07-18 | A kind of novel ultra-wideband flat helical antenna of integrated barron structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203983479U true CN203983479U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420400056.1U Expired - Fee Related CN203983479U (en) | 2014-07-18 | 2014-07-18 | A kind of novel ultra-wideband flat helical antenna of integrated barron structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134855A (en) * | 2014-07-18 | 2014-11-05 | 华南理工大学 | Novel ultra wide band planar spiral antenna integrated with Balun structure |
| CN105261828A (en) * | 2015-11-05 | 2016-01-20 | 中国船舶重工集团公司第七二四研究所 | Multi-linewidth gradually-varied Archimedes helical antenna and implementation method therefor |
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub antenna |
| CN113036409A (en) * | 2021-01-27 | 2021-06-25 | 西安电子科技大学 | Low-profile planar helical antenna adopting novel feed mode |
-
2014
- 2014-07-18 CN CN201420400056.1U patent/CN203983479U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134855A (en) * | 2014-07-18 | 2014-11-05 | 华南理工大学 | Novel ultra wide band planar spiral antenna integrated with Balun structure |
| CN105261828A (en) * | 2015-11-05 | 2016-01-20 | 中国船舶重工集团公司第七二四研究所 | Multi-linewidth gradually-varied Archimedes helical antenna and implementation method therefor |
| CN105261828B (en) * | 2015-11-05 | 2017-11-24 | 中国船舶重工集团公司第七二四研究所 | More line width gradual change Archimedian spiral antennas and its implementation |
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub antenna |
| CN113036409A (en) * | 2021-01-27 | 2021-06-25 | 西安电子科技大学 | Low-profile planar helical antenna adopting novel feed mode |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |