CN207517860U - A kind of liquid paster antenna - Google Patents
A kind of liquid paster antenna Download PDFInfo
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- CN207517860U CN207517860U CN201721552556.7U CN201721552556U CN207517860U CN 207517860 U CN207517860 U CN 207517860U CN 201721552556 U CN201721552556 U CN 201721552556U CN 207517860 U CN207517860 U CN 207517860U
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- nonmetallic
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Abstract
The utility model discloses a kind of liquid paster antenna, including the medium substrate with metal floor, excitation port, metal probe and it is built-in with the nonmetallic radiation patch of liquid and is built-in with the nonmetallic short-circuit patch of liquid；The nonmetallic short-circuit patch is vertically fixed on metal floor, one end is connected with metal floor, form ground short circuit, its other end is connected with being parallel to the nonmetallic radiation patch of metal floor, the nonmetallic short-circuit patch forms an inverted L structure with nonmetallic radiation patch, and both internal liquid communication, one end of the metal probe is stretched into across medium substrate in nonmetallic radiation patch, its other end installs excitation port, and the metal probe is parallel and near in nonmetallic short-circuit patch, but is not directly contacted with.The utility model has higher radiation efficiency, higher gain, wider impedance bandwidth and omnidirectional radiation characteristic, working frequency covering 2.26GHz~3.24GHz.
Description
Technical field
The utility model is related to field of antenna, refer in particular to a kind of liquid paster antenna.
Background technology
With the development of mechanics of communication, the requirement of the various performances in communication applications for antenna is higher and higher, Ren Menxi
Hope that the volume of antenna is small, radiation efficiency is high, gain is high, bandwidth is wide, full phasic property will be got well.Traditional antenna structure is gradual
Be difficult to meet these requirements, researcher is promoted constantly to probe into application of the new material new technology in antenna technology, liquid
Antenna is exactly an important research direction of the new material in antenna technology application.
Traditional antenna especially paster antenna is mainly using metal as irradiation structure, and the conception of liquid antenna is exactly with liquid
Body replaces the radiating element of solid metal structure or solid state medium resonator structure as antenna on traditional antenna.It compares
Traditional metal structure antenna, liquid antenna have the advantages that the following aspects；
1st, small, in medium resonator antenna, antenna size can theoretically reduceThis coefficient factor.
2nd, reconfigurability, liquid compare traditional antenna form with flowable characteristic, therefore the shape of antenna can be with
It is made a change according to the requirement of itself, such as is realized by the height of the stereomutation monopole for adjusting liquid and diameter at any time
The conversion and adjusting of frequency and bandwidth.
3rd, smaller radar cross section, only just pumping liquid when in use, can effectively less antenna on radar
Reflecting section, meanwhile, when water is as dielectric resonator, radar can also be effectively reduced since the dielectric constant of water is bigger
Reflecting section can effectively hide electronic reconnaissance.
4th, at low cost, liquid antenna is mostly using conductive seawater or nonconducting pure water, and compare metal structure
Or advantage of the dielectric resonator structure in cost is fairly obvious.
In liquid Antenna Design, antenna is mainly related to according to its dielectric property or electric conductivity.It is led earliest using liquid
That electrically carry out antenna research work is Hatch, he supports electric current to transmit, and be put forward for the first time using seawater as radiation medium
" concept of ionic liquid antenna " and the research for thus having started liquid antenna.H.Fayad devises a use within 2005
Seawater antenna of the saline solution as conducting medium, he around monopole antenna by adding conductive saline solution, due to salt
The dielectric constant of water is larger, and operation wavelength of the electromagnetic wave in saline solution shortens, so the probe of equal length, loads saline solution
The resonant frequency of aft antenna is moved towards low frequency direction.Tam D.W. in 2012 devise a dynamic sea using the mobility of liquid
Water monopole antenna, by monopole irradiation structure of the water column of water pump injection as antenna, but the performance of antenna is sprayed
Water column flow is affected with the extraneous factors such as wind-force, and antenna stabilization is to be improved.The Huang Yi religions of Britain in 2012
It awards and proposes a kind of seawater static state monopole antenna, the conductivity of seawater is controlled by changing the content of NaCl in seawater, when
When seawater conductivity is relatively low, seawater is the dielectric resonator as antenna, and when conductivity is higher, seawater is conductor with dielectric property
Mixed characteristic antenna.
Pure water starts from 1999 as the imagination of the dielectric resonator of antenna, S.P.Kingsley and S.G.O ' Keefe
The humorous material of medium by the use of pure distilled water as medium resonator antenna is proposed, since pure water is the all-transparent of flowing
, therefore antenna probe is being placed, adjusting inner antenna structure etc. has absolute predominance.Steven G.O ' in 2007
Keefe et al. devises the adjustable restructural liquid medium resonant aerial of a bandwidth, by the Level Change day for adjusting water
The resonant frequency of line introduces voltage-capacitance control device, and the capacitance of pipe is held by changing voltage control variable, makes each frequency range all
With good impedance matching.Professor Shen Zhongxiang in 2014 devises a kind of adjustable leaky wave of directional diagram using the dielectric property of water
Antenna, which changes the spread speed and phase of plane wave using the boom striped of period setting, by changing boom
Width of fringe and spacing realize the restructural of directional diagram.Professor Shen Zhongxiang is devised using the dielectric property of distilled water within 2016
The adjustable helical antenna of kind polarization, antenna is made of two layers of the opposite distilled water in Rao Xuan directions, by encouraging different distilled water
Layer realizes the polarization conversion of left-handed dextrorotation.Professor Luk proposes a kind of circular patch antenna of all-transparent, the radiation of antenna within 2016
Patch is formed with floor using by transparent Plexiglas material package pure water, and the electromagnetic wave that feed structure generates is in circle
It is reflected between water patch and water floor, by the gap radiation to free space between round water patch and water floor, whole knot
Other than feed structure is using a small amount of metal, remaining entire infrastructure is all made of structure plexiglas package pure water, is a
The really antenna of the all-transparent in meaning.
Invention content
The purpose of the utility model is to overcome the deficiencies in the prior art, it is proposed that one kind is simple in structure, radiation efficiency is high,
It with liquid paster antenna wide, at low cost, can be applied in wireless communication system well, working frequency covering
2.26GHz~3.24GHz.
To realize above-mentioned target, technical solution provided by the utility model is：A kind of liquid paster antenna, including band metal
It the medium substrate on floor, excitation port, metal probe and is built-in with the nonmetallic radiation patch of liquid and is built-in with liquid
Nonmetallic short-circuit patch；The nonmetallic short-circuit patch is vertically fixed on metal floor, and one end is connected with metal floor, shape
Into ground short circuit, the other end is connected with being parallel to the nonmetallic radiation patch of metal floor, the nonmetallic short-circuit patch with
Nonmetallic radiation patch forms an inverted L structure, and both internal liquid communication, and one end of the metal probe is worn
Medium substrate is crossed to stretch into nonmetallic radiation patch, the other end installs excitation port, and the metal probe parallel and near to
In nonmetallic short-circuit patch, but it is not directly contacted with.
The nonmetallic radiation patch, the same symmetry axis of nonmetallic short-circuit patch, the metal probe deviate the symmetry axis,
So that the short side direction of nonmetallic radiation patch forms a resonance point.
The nonmetallic radiation patch and nonmetallic short-circuit patch are wrapped in the nonmetallic vessel of an inverted L-shaped, described
Metal probe is to stretch into nonmetallic vessel to be in direct contact with nonmetallic radiation patch across medium substrate.
The nonmetallic radiation patch, nonmetallic short-circuit patch are transparent patch.
Liquid in the nonmetallic radiation patch, nonmetallic short-circuit patch is pure water.
The utility model compared with prior art, has the following advantages and improves：
1st, compared with existing antenna, the utility model only has feed structure to use a small amount of metal material with floor,
For remaining such as radiation patch with short-circuit patch using nonmetallic materials, the use of nonmetallic materials substantially reduces the thunder of antenna
Up to reflecting section, there is excellent covert property.
2nd, compared with existing antenna, the radiation patch and short-circuit patch of the utility model are transparent patch, in appearance
The upper characteristic with all-transparent effectively reduces the cost of antenna using cheap material.
3rd, compared with existing liquid antenna, the radiation efficiency higher of the utility model has the radiation effect of liquid antenna
Rate is influenced by conductivity and dielectric property, and dielectric loss is higher, therefore radiation efficiency is relatively low, and the radiation efficiency of the design reaches
72%~91%, there is large increase compared to more existing liquid antenna.
4th, compared with existing liquid antenna, the bandwidth of the utility model is wider, and the big drawback for having liquid antenna is exactly
The impedance matching narrower bandwidth of antenna, the design is by introducing multiple resonance points, then adjusts the size of radiation patch and make resonance point
It is close to each other, achieve the purpose that increase antenna impedance bandwidth.
Description of the drawings
Fig. 1 is the liquid paster antenna side view of the utility model.
Fig. 2 is the liquid paster antenna vertical view of the utility model.
Fig. 3 is the liquid paster antenna stereogram of the utility model.
Fig. 4 is the S parameter schematic diagram of the liquid paster antenna of the utility model.
Fig. 5 is the radiation efficiency schematic diagram of the liquid paster antenna of the utility model.
Specific embodiment
With reference to specific example, the utility model is described in further detail.
Liquid paster antenna shown in Figure 1, that the present embodiment is provided, including with metal floor (being not drawn into figure)
Medium substrate 4, metal probe 5, the nonmetallic radiation patch 1 for being built-in with liquid (preferably pure water), is built-in with excitation port 6
The nonmetallic short-circuit patch 2 of liquid (preferably pure water) and container 3 made of plexiglas, wherein, it is described nonmetallic short
Road patch 2 is vertically fixed on metal floor, and one end is connected with metal floor, formed ground short circuit, the other end with it is parallel
It is connected in the nonmetallic radiation patch 1 of metal floor, the nonmetallic short-circuit patch 2 forms one with nonmetallic radiation patch 1
Inverted L structure, and both same symmetry axis, their internal liquid communications, the nonmetallic radiation patch 1 and nonmetallic
Short-circuit patch 2 is wrapped in the container 3 being made of plexiglas, and appearance is stretched into one end of the metal probe 5 across medium substrate 4
It is in direct contact in device 3 with nonmetallic radiation patch 1, the other end installs excitation port 6.
Referring to shown in Fig. 2, Fig. 3, in the figure it can be seen that position of metal probe 5 is not in nonmetallic radiation patch 1 and non-
On the symmetry axis of short circuit metal patch 2 but slightly offset from symmetry axis, this is in order in 1 short side direction shape of nonmetallic radiation patch
Into a resonance point 42；Metal probe 5 is embedded in container 3, and is parallel to nonmetallic short-circuit patch 2, but metal probe 5
Side and nonmetallic short-circuit patch 2 are simultaneously not directly contacted with.
Shown in Figure 4, first resonance point 41 in figure is mainly controlled by the length of nonmetallic radiation patch 1, is adjusted
The length of section nonmetallic radiation patch 1 and the height of nonmetallic short-circuit patch 2 can move resonance point 41；Second resonance point
42 are controlled by the width of nonmetallic radiation patch 1, by 5 distance of width and metal probe for adjusting nonmetallic radiation patch 1
The distance of symmetry axis can move resonance point 42.In a word by the length of nonmetallic radiation patch 1 and wide numerical value, make two resonance
Point 41 and 42 close to each other, makes the non-constant width of impedance bandwidth of antenna, relative bandwidth reached 35.6% (2.26GHz-
3.24GHz)。
As shown in figure 5, the characteristics of the utility model antenna realizes high radiation efficiency.The radiation efficiency of antenna reaches as high as
90%, the radiation efficiency of liquid antenna being more than before.It is normal that the raising of the radiation efficiency of antenna mainly employs high dielectric
The pure water of number (being 81 under room temperature) is as radiation patch, therefore energy of electromagnetic field is concentrated mainly on the smaller material of dielectric constant
In, i.e., in the free space in container 3 between nonmetallic radiation patch 1 and metal floor 4, this just effectively reduces antenna
Dielectric loss.Meanwhile compared to more traditional metal patch, reduce due to energy loss caused by metal structure.
By above analysis it is recognised that the utility model antenna both increases bandwidth, radiation efficiency is improved, and can drop
Low cost is worthy to be popularized.
Embodiment described above is only the preferred embodiment of the utility model, and the implementation of the utility model is not limited with this
Range, therefore the variation that all shape, principles according to the utility model are made, should all cover within the protection scope of the present utility model.
Claims (5)
1. a kind of liquid paster antenna, it is characterised in that：Including the medium substrate with metal floor, excitation port, metal probe
And it is built-in with the nonmetallic radiation patch of liquid and is built-in with the nonmetallic short-circuit patch of liquid；The nonmetallic short-circuit patch
Be vertically fixed on metal floor, one end is connected with metal floor, formed ground short circuit, the other end with being parallel to metal
The nonmetallic radiation patch of plate is connected, and the nonmetallic short-circuit patch forms an inverted L structure, and it with nonmetallic radiation patch
Liquid communication inside the two, one end of the metal probe stretched into nonmetallic radiation patch across medium substrate,
The other end installs excitation port, and the metal probe is parallel and near in nonmetallic short-circuit patch, but is not directly contacted with.
2. a kind of liquid paster antenna according to claim 1, it is characterised in that：The nonmetallic radiation patch, non-gold
Belong to the same symmetry axis of short-circuit patch, the metal probe deviates the symmetry axis, so that the short side direction shape of nonmetallic radiation patch
Into a resonance point.
3. a kind of liquid paster antenna according to claim 1 or 2, it is characterised in that：The nonmetallic radiation patch and
Nonmetallic short-circuit patch is wrapped in the nonmetallic vessel of an inverted L-shaped, the metal probe be stretched into across medium substrate it is non-
It is in direct contact in canister with nonmetallic radiation patch.
4. a kind of liquid paster antenna according to claim 1 or 2, it is characterised in that：It is the nonmetallic radiation patch, non-
Short circuit metal patch is transparent patch.
5. a kind of liquid paster antenna according to claim 1 or 2, it is characterised in that：It is the nonmetallic radiation patch, non-
Liquid in short circuit metal patch is pure water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721552556.7U CN207517860U (en) | 2017-11-20 | 2017-11-20 | A kind of liquid paster antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721552556.7U CN207517860U (en) | 2017-11-20 | 2017-11-20 | A kind of liquid paster antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207517860U true CN207517860U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721552556.7U Expired - Fee Related CN207517860U (en) | 2017-11-20 | 2017-11-20 | A kind of liquid paster antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785652A (en) * | 2017-11-20 | 2018-03-09 | 华南理工大学 | A kind of liquid paster antenna |
-
2017
- 2017-11-20 CN CN201721552556.7U patent/CN207517860U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785652A (en) * | 2017-11-20 | 2018-03-09 | 华南理工大学 | A kind of liquid paster antenna |
| CN107785652B (en) * | 2017-11-20 | 2023-06-20 | 华南理工大学 | Liquid patch antenna |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20201120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |