CN205543222U - Small -size 433MHz's single helical antenna in archimedes plane - Google Patents
Small -size 433MHz's single helical antenna in archimedes plane Download PDFInfo
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- CN205543222U CN205543222U CN201620205424.6U CN201620205424U CN205543222U CN 205543222 U CN205543222 U CN 205543222U CN 201620205424 U CN201620205424 U CN 201620205424U CN 205543222 U CN205543222 U CN 205543222U
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Abstract
The utility model discloses a small -size 433MHz's single helical antenna in archimedes plane, this small -size 433MHz's single helical antenna in archimedes plane includes the medium base plate, radiating element and ground plane, the medium base plate openly is the single heliciform radiating element of archimedes, medium base plate reverse side is circular ground plate, the antenna adopts the coaxial feed mode, radiating element passes through the via hole with the ground plate and uses 50 ohm of radio frequency lines to be connected, the via hole lies in the inner ring of the single spiral radiating element of archimedes and plays the initial point. This antenna can satisfy small, the clawback loss is little, the gain is high and facilitate the use to components and parts can be placed in the ground plate back, make antenna and equipment circuit collection in an organic whole.
Description
Technical field
This utility model relates to antenna technical field, particularly relates to Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz.
Background technology
Wireless communication system is widely used to every field in recent years, and user can not be utilized wireless communication system to carry out the transmission of information and information by distance limit.And antenna is one of element important in wireless communication field, currently in order to the size reduction of response electronic product and the diversity of outward appearance, small built-in antenna, because size is little, be easy to the feature integrated with circuitry, is extensively incorporated in various electronic installation.
Antenna, as the bridge of radio communication, is the key realizing radio communication.Along with wireless communication technology and the development of electronic technology, the wireless electronic product in daily life becomes more and more less, more and more thinner, and the gentliest, and function becomes from strength to strength.Therefore researching and developing a small-sized 433MHz flat plane antenna, the research and development needs adapting to antenna miniaturization are the problems that our needs solve.
Summary of the invention
This utility model embodiment provides Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz, it is possible to reach that simple in construction, low cost, clawback loss be little, requirement that gain is high.
Implementation of the present utility model is as follows: Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz includes medium substrate, radiating element and ground plane, medium substrate front is Archimedes's monotonous helical shape radiating element, medium substrate reverse side is annular ground plate, antenna uses coaxial feed mode, radiating element uses 50 Ohm radio frequency lines to be connected with earth plate by via, and via is positioned at Archimedes's single-screw radiating element innermost ring starting point.
Preferably, described via diameter is 0.3mm.
Preferably, described radiating element, earth plate and via be content be the copper of more than 90%.
Preferably, described medium substrate be radius be 14mm, circular FR4 plate of material, relative dielectric constant is 4.4.
Preferably, described radiating element is the planar spiral of archimedes line, and with the medium substrate center of circle as the center of circle, Archimedes spiral start point distance center of circle 10.25mm, Archimedes's live width 1mm, Archimedes spiral rotates 720 °.
Preferably, the maximum gain of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz is 0.5dBi.
Preferably, the frequency of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz is 420MHz-440MHz, carries a width of 20MHz.
Pass through such scheme, the beneficial effects of the utility model are: Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz arranges the radiating element of Archimedes spiral shape, reduce antenna further to be taken up space, add the bandwidth of antenna simultaneously, antenna volume is little, simple in construction, convenient embedding, overall size is the circle with 14mm as radius, and clawback loss simultaneously is little, maximum gain is 0.5dBi, on the basis of simple low cost, it is achieved clawback loss is low, gain is high, disclosure satisfy that its volume is little, the requirement of applied range.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.Wherein:
Fig. 1 is the Facad structure schematic diagram of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz of this utility model；
Fig. 2 is the return loss plot of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz of this utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiment.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making performing creative labour premise, broadly fall into the scope of this utility model protection.
Shown in Figure 1, Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz disclosed in the present embodiment includes medium substrate 1, radiating element 2 and ground plane (figure does not regards), medium substrate 1 front is Archimedes's monotonous helical shape radiating element 2, medium substrate 1 reverse side is annular ground plate, antenna uses coaxial feed mode, radiating element uses 50 Ohm radio frequency lines to be connected with earth plate by via 3, and via 3 is positioned at Archimedes's single-screw radiating element innermost ring starting point.
Preferably, the described a diameter of 0.3mm of via 3.
Preferably, described radiating element 2, earth plate and via 3 are the copper of more than 90% for content.
Preferably, described medium substrate be radius be the circular FR4 plate of material of 14mm, relative dielectric constant is 4.4.
Preferably, described radiating element is the planar spiral of archimedes line, the standard polar equation of archimedes line is: r (θ)=a+ b (θ), in formula: a is the footpath, pole when θ=0 °, unit is mm, b is spiral of Archimedes coefficient, and unit is mm/ °, represents increase (or reduction) amount in footpath, pole when often rotating 1 degree；θ is polar angle, and unit is degree, represents total number of degrees that spiral of Archimedes turns over；Changing parameter a and will change spiral shape, b controls the distance between helical, and, Archimedes spiral start point distance center of circle 10.25mm, Archimedes's live width 1mm, Archimedes spiral rotates 720 ° in the present embodiment preferably.
Preferably, the maximum gain of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz is 0.5dBi.
Preferably, the frequency of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz is 420MHz-440MHz, carries a width of 20MHz.
Shown in Figure 2, in impedance bandwidth, the return loss requirement of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz is less than-10dB, the return loss of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz disclosed in the present embodiment can reach-16dB, is requiring that band limits internal impedance meets requirement.
Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz arranges the radiating element of Archimedes spiral shape, reduces antenna further and is taken up space, adds the bandwidth of antenna simultaneously, antenna volume is little, simple in construction, convenient embedding, overall size is the circle with 14mm as radius, clawback loss simultaneously is little, and maximum gain is 0.5dBi, on the basis of simple low cost, realize clawback loss low, gain is high, it is possible to meet its volume little, the requirement of applied range.
The gain of Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz disclosed in the present embodiment is 0.5dBi, and the gain level of antenna meets use requirement.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (5)
1. Archimedes's plane single-spiral antenna of a small-sized 433MHz, it is characterized in that, described, Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz includes medium substrate, radiating element and ground plane, medium substrate front is Archimedes's monotonous helical shape radiating element, and medium substrate reverse side is annular ground plate, and antenna uses coaxial feed mode, radiating element uses 50 Ohm radio frequency lines to be connected with earth plate by via, and via is positioned at Archimedes's single-screw radiating element innermost ring starting point.
Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz the most according to claim 1, it is characterised in that described via diameter is 0.3mm.
Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz the most according to claim 1, it is characterized in that, described radiating element is the planar spiral of archimedes line, with the medium substrate center of circle as the center of circle, Archimedes spiral start point distance center of circle 10.25mm, Archimedes's live width 1mm, Archimedes spiral rotates 720 °.
Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz the most according to claim 1, it is characterised in that the gain of Archimedes's plane single-spiral antenna of described a kind of small-sized 433MHz is 0.5dB to the maximum.
Archimedes's plane single-spiral antenna of a kind of small-sized 433MHz the most according to claim 1, it is characterised in that the frequency of Archimedes's plane single-spiral antenna of described a kind of small-sized 433MHz is 420MHz-440MHz, carries a width of 20MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620205424.6U CN205543222U (en) | 2016-03-17 | 2016-03-17 | Small -size 433MHz's single helical antenna in archimedes plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620205424.6U CN205543222U (en) | 2016-03-17 | 2016-03-17 | Small -size 433MHz's single helical antenna in archimedes plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205543222U true CN205543222U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620205424.6U Expired - Fee Related CN205543222U (en) | 2016-03-17 | 2016-03-17 | Small -size 433MHz's single helical antenna in archimedes plane |
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| CN (1) | CN205543222U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609947A (en) * | 2016-03-17 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Miniature 433-MHz Archimedes planar single spiral antenna |
| CN109917250A (en) * | 2019-04-04 | 2019-06-21 | 华北电力大学（保定） | Detect the multifrequency point wide frequency antenna and its design method of local discharge of electrical equipment |
-
2016
- 2016-03-17 CN CN201620205424.6U patent/CN205543222U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609947A (en) * | 2016-03-17 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Miniature 433-MHz Archimedes planar single spiral antenna |
| CN109917250A (en) * | 2019-04-04 | 2019-06-21 | 华北电力大学（保定） | Detect the multifrequency point wide frequency antenna and its design method of local discharge of electrical equipment |
| CN109917250B (en) * | 2019-04-04 | 2021-04-23 | 华北电力大学（保定） | Multi-frequency-point broadband antenna for detecting partial discharge of electrical equipment and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160831 Termination date: 20190317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |