CN204374102U - A kind of microwave laminated imaging device - Google Patents
A kind of microwave laminated imaging device Download PDFInfo
- Publication number
- CN204374102U CN204374102U CN201520063659.1U CN201520063659U CN204374102U CN 204374102 U CN204374102 U CN 204374102U CN 201520063659 U CN201520063659 U CN 201520063659U CN 204374102 U CN204374102 U CN 204374102U
- Authority
- CN
- China
- Prior art keywords
- microwave
- dielectric resonator
- resonator antenna
- imaging device
- imaging region
- 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.)
- Expired - Fee Related
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
A kind of microwave laminated imaging device, comprise an aerial array be made up of multiple dielectric resonator antenna, cylindricality imaging region, a metal cartridge container, it is characterized in that, each dielectric resonator antenna in described aerial array is made up of dielectric resonator; Aerial array is around cylindricality imaging region; Each dielectric resonator antenna has microwave signal connector, can microwave radiation or receive microwave; Microwave signal transmission is carried out by cylindricality imaging region between dielectric resonator antenna.The utility model is a kind of microwave laminated imaging device, for generating the image of specific inductive capacity, utilizes low power microwave and described device to be embodied as picture.
Description
Technical field
The utility model is a kind of microwave laminated imaging device, relates to computer picture forming field.
Background technology
Microwave tomography utilizes multiple antenna to realize the transmission of multi-path, low power microwave, carries out measurement imaging to the dielectric property of material inside, thus analyzes the distribution releasing Physics amount, as the distribution of concentration, humidity.
Microwave tomography carries out radiation and the reception of microwave by microwave antenna, utilize a direction incidence of material in a sky alignment imaging region, the microwave of radiation and the dielectric property generation effect of material, form an omnidirectional scattering wave, then scattering wave is received by another antenna along a scattering direction, microwave signal transmission between formation like this pair antenna, recycling microwave detector measures amplitude and the phase place of scattering wave signal.With same form, utilize the scattering wave in other other direction of antenna measurement.In order to obtain the data of multiple directions scattering wave in different directions impinging microwave situation, microwave chromatographic imaging system generally adopts the array be made up of multiple antenna, these antenna is emitted on the edge of imaging region equably, array formed around imaging region, after the multidirectional scattered field data of acquisition, in recycling image rebuilding method reestablishment imaging region, the dielectric property of material, forms image.
Before the utility model, microwave imaging system generally adopts the dwi hastasana of single dipole to become aerial array, as (Microwave tomographic system for oil and gas multiphase flow imaging such as Z. Wu, IOP Measurement Science and Technology, 20th volume 104026 in 2009) set forth (the Microwave tomographic imaging utilizing low-profile rotating such as microwave imaging system and N. R. Epstein of traditional single dipole in document, right angle-bent monopole antennas, International journal of antennas and propagation, 2014 431602) rotate, the microwave imaging system of the single dipole of right-angle bending.Best radiation frequency due to single dipole is in its length close to quarter-wave, so may much larger than the diameter of imaging region xsect in the physical length of low frequency microwave wave band single dipole.Under these circumstances, material can bring error to image rebuilding method along the unevenness of cylinder imaging region axial direction.The utility model proposes the dielectric resonator antenna adopting and be made up of the dielectric material of high-k, carry out transmitting and receiving microwave signal, shorten the size of antenna, reduce the unevenness of material along cylinder imaging region axial direction to the impact of imaging system, guarantee picture quality; Be convenient to utilize multiple tier array to carry out 3D imaging simultaneously.
Summary of the invention
The utility model provides a kind of microwave laminated imaging device, for generating the image of substance dielectric constant.The utility model provides a kind of microwave laminated imaging device, utilizes low power microwave to be embodied as picture.
The technical scheme that the utility model is taked is:
A kind of microwave laminated imaging device, comprise an aerial array be made up of multiple dielectric resonator antenna, cylindricality imaging region, a metal cartridge container, it is characterized in that, each dielectric resonator antenna in described aerial array is made up of dielectric resonator; Aerial array is around cylindricality imaging region; Each dielectric resonator antenna has microwave signal connector, can microwave radiation or receive microwave; Microwave signal transmission is carried out by cylindricality imaging region between dielectric resonator antenna.
Each dielectric resonator antenna is made up of the dielectric material of its specific inductive capacity between 20 to 100;
Each dielectric resonator antenna is distributed on the same xsect of described cylindricality imaging region, and each dielectric resonator antenna has altogether.
Each dielectric resonator antenna is square, rectangle or circular cylinder.
Each dielectric resonator antenna is by a probe feed.
Each dielectric resonator antenna is connected with microwave signal source or microwave detector by microwave signal connector.
Each dielectric resonator antenna has individual SMA connector as microwave joining mouth and feed probes; Have individual dielectric material to isolate between the shell of SMA and center conductor, the shell of SMA is connected with metal cartridge container, and the center conductor of SMA forms the feed probes of dielectric resonator antenna.
Described metal cartridge container is made up of aluminium, copper or stainless steel material, metal cartridge container be aerial array commonly.
Described cylindricality imaging region comprises a cylindrical tube and interior zone; The axial direction of pipeline is identical with the axial direction of metal cartridge container.
A formation method for microwave laminated imaging device, has a microwave signal source at least, and for the excitation of microwave, frequency range is 300 megahertz to 10 Gigahertzs;
Has a microwave detector at least, for the detection of microwave;
Have a measuring method at least, the microwave signal transmission realized between all antennas is measured, and comprises the measurement of amplitude and phase place, forms one group of measurement data, rebuild the distributed image of the specific inductive capacity in described cylindricality imaging region on xsect.
A formation method for microwave laminated imaging device, comprises a display packing, the distributed image of display specific inductive capacity.
A formation method for microwave laminated imaging device, a kind of microwave chromatography imaging method, is characterized in that comprising the following steps:
1), provide a dielectric resonator antenna array be emitted on same xsect, be arranged in the periphery of described cylindricality imaging region, and carry out Signal transmissions by described cylindricality imaging region.
2), common as aerial array of a metal cartridge container be provided.
3), provide a measuring method, measure the Signal transmissions between antenna, comprise the measurement of amplitude and phase place.
4), provide an image rebuilding method, utilize the signal transmitted data between dielectric resonator antenna to derive the distributed image of specific inductive capacity in described cylindricality imaging region.
A kind of microwave laminated imaging device of the utility model, technique effect is as follows:
This device can carry out imaging to the material in dielectric resonator antenna array institute enclosing region, generates the distributed image of specific inductive capacity; This device can shorten the length of antenna along cylinder imaging region axial direction, reduce the unevenness influence on RT of material along cylinder imaging region axial direction, metal cartridge container is also as the electromagnetic screen of device, reduce the impact of neighbourhood noise, guarantee picture quality, adopt dielectric resonator antenna array simultaneously, be convenient to multiple tier array layout and carry out 3D imaging.
Accompanying drawing explanation
Fig. 1 shows a diagrammatic top view according to the device of the first embodiment of the present utility model.
Fig. 2 shows a device according to the first embodiment of the present utility model by the diagrammatic side view at center, comprises the skeleton view of square dielectric resonator antenna and SMA connector.
Fig. 3 shows a diagrammatic top view according to the device of the second embodiment of the present utility model.
Fig. 4 illustrates schematic flow sheet of the present utility model.
Embodiment
A kind of microwave laminated imaging device, provides and comprises an aerial array be made up of multiple dielectric resonator antenna, cylindricality imaging region, a metal cartridge container; Each dielectric resonator antenna in aerial array is made up of dielectric resonator; Aerial array is around cylindricality imaging region; Each dielectric resonator antenna has microwave signal connector, can microwave radiation or receive microwave; Microwave signal transmission is carried out by cylindricality imaging region between dielectric resonator antenna.
The characteristic of antenna has had detailed description (as " antenna theory-design and study ", Balanis, 1988) in many textbooks, and it is a radiation and the device receiving microwave.Radiation field of aerial can be divided near field and far zone field, can be solved by Maxwell equation.The utility model adopts dielectric resonator antenna, dielectric resonator antenna is made up of the dielectric material of high-k, the mode of operation of dielectric resonator antenna and radiation characteristic are in list of references, as (Dielectric Resonator Antennas such as K. W. Luk, Research Studies Press, 2003) have clear and definite description.
The greatest irradiation direction of each dielectric resonator antenna of the present utility model is vertical with the axial direction of imaging region, and dielectric resonator antenna array has altogether, is made up of metal cartridge container.The size of each dielectric resonator antenna in dielectric resonator antenna array is identical substantially.Number of antennas is 16 under normal circumstances, and these antenna is emitted on the edge of cylindricality imaging region by uniform intervals, and the xsect of cylindricality imaging region is generally circle, but also can be square or other shape.
Under normal circumstances, comprise a measuring method according to device of the present utility model, the Signal transmissions between measuring media resonant antenna, comprise the measurement of amplitude and phase place.The connection of metering circuit and dielectric resonator antenna, by microwave joining mouth, also can adopt direct connection.Each dielectric resonator antenna can microwave radiation or receive microwave, when measuring the Signal transmissions between two dielectric resonator antennas, one of them dielectric resonator antenna for microwave radiation, another dielectric resonator antenna is for receiving microwave.
Consider an embodiment of the present utility model, adopt 16 dielectric resonator antennas be emitted on same xsect, code name 1# to 16#.Suitable metering system is the Signal transmissions between measurement 1# dielectric resonator antenna and 2# to 16# dielectric resonator antenna, Signal transmissions between 2# dielectric resonator antenna and 3# to 16# dielectric resonator antenna, Signal transmissions between 3# dielectric resonator antenna and 4# to 16# dielectric resonator antenna, etc., until the Signal transmissions between 15# dielectric resonator antenna and 16# dielectric resonator antenna, form 120 amplitude data and 120 phase data, for image reconstruction.
Device of the present utility model comprises image rebuilding method, the data of Signal transmissions between the dielectric resonator antenna that described measuring method obtains, logical image rebuilding method carries out tomography, the Inversion Calculation method of many tomographies is widely known by the people, and the image rebuilding method that device of the present utility model adopts is Newton method.The imaging parameters that in the utility model apparatus and method, imaging adopts is specific inductive capacity.
Device of the present utility model comprises display packing, is adapted to the distributed image showing specific inductive capacity.
Measuring-signal is generally the frequency-region signal of sinusoidal waveform.
Fig. 1 and Fig. 2 respectively illustrates vertical view and the side view of first embodiment of the present utility model, wherein in metal cartridge container 1, arrange a dielectric resonator antenna array equably, metal cartridge container 1 is cylindrical, is made up of aluminium, copper, stainless steel and other metal materials.Aerial array is made up of 16 dielectric resonator antennas 2.Dielectric resonator antenna 2 is square, rectangle or circle, is made up of the dielectric material of specific inductive capacity between 20 to 100; Each dielectric resonator antenna 2 has individual SMA connector 3 as microwave joining mouth, the shell of SMA is connected with metal cartridge container 1, the center conductor 3a of SMA, as the feed probes of dielectric resonator antenna 2, has individual dielectric material 3b to isolate between the shell of SMA and center conductor.Aerial array in the edge ring of imaging region around imaging region.Imaging region comprises a nonmetallic pipeline 4 and the spatial volume 5 of material is housed, and wherein the length of nonmetallic pipeline 4 is more than or equal to the length of metal cartridge container 1, metal cartridge container 1 also as electromagnetic screen to reduce the impact of neighbourhood noise.
Fig. 3 shows second embodiment of the present utility model, second embodiment extends first embodiment, wherein metal cartridge container 1, nonmetallic pipeline 4 and imaging region 5 are square body, dielectric resonator antenna is emitted on the edge of square pipe, is altogether with metal cartridge container 1.
Fig. 4 shows schematic flow sheet of the present utility model, in figure, 16 dielectric resonator antennas are connected with signal transmitted data Acquisition Circuit, by measuring method, realize the collection of signal transmitted data between 16 dielectric resonator antennas, then by computing machine, image rebuilding method is adopted to carry out imaging.
Will be appreciated that, when not departing from scope of the present utility model, embodiment described above has the scheme of many amendments.Such as, antenna number can be 8 or other number.
More than description and illustrated embodiment are only illustrative, and nonrestrictive.Be appreciated that to only have preferred embodiment describe in this instructions and illustrate, the change in all scopes of the present utility model from defining in claims and amendment are all included among protection of the present utility model.
Claims (9)
1. a microwave laminated imaging device, comprise an aerial array be made up of multiple dielectric resonator antenna, cylindricality imaging region, a metal cartridge container, it is characterized in that, each dielectric resonator antenna in described aerial array is made up of dielectric resonator; Aerial array is around cylindricality imaging region; Each dielectric resonator antenna has microwave signal connector, can microwave radiation or receive microwave; Microwave signal transmission is carried out by cylindricality imaging region between dielectric resonator antenna.
2. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, each dielectric resonator antenna is made up of the dielectric material of its specific inductive capacity between 20 to 100.
3. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, each dielectric resonator antenna is distributed on the same xsect of described cylindricality imaging region, and each dielectric resonator antenna has altogether.
4. a kind of microwave laminated imaging device according to claim 1, is characterized in that, each dielectric resonator antenna is square, rectangle or circular cylinder.
5. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, each dielectric resonator antenna is provided with a probe feed.
6. a kind of microwave laminated imaging device according to claim 1, is characterized in that, each dielectric resonator antenna is connected with microwave signal source or microwave detector by microwave signal connector.
7. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, each dielectric resonator antenna has individual SMA connector as microwave joining mouth and feed probes; Have individual dielectric material to isolate between the shell of SMA and center conductor, the shell of SMA is connected with metal cartridge container, and the center conductor of SMA forms the feed probes of dielectric resonator antenna.
8. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, described metal cartridge container is made up of aluminium, copper or stainless steel material, metal cartridge container be aerial array commonly.
9. a kind of microwave laminated imaging device according to claim 1, it is characterized in that, described cylindricality imaging region comprises a cylindrical tube and interior zone; The axial direction of pipeline is identical with the axial direction of metal cartridge container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063659.1U CN204374102U (en) | 2015-01-29 | 2015-01-29 | A kind of microwave laminated imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063659.1U CN204374102U (en) | 2015-01-29 | 2015-01-29 | A kind of microwave laminated imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204374102U true CN204374102U (en) | 2015-06-03 |
Family
ID=53330311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520063659.1U Expired - Fee Related CN204374102U (en) | 2015-01-29 | 2015-01-29 | A kind of microwave laminated imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204374102U (en) |
-
2015
- 2015-01-29 CN CN201520063659.1U patent/CN204374102U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10101282B2 (en) | Scattering tomography method and scattering tomography device | |
| Paciga et al. | The GMRT Epoch of Reionization experiment: a new upper limit on the neutral hydrogen power spectrum at z≈ 8.6 | |
| US10197508B2 (en) | Imaging using reconfigurable antennas | |
| Sun et al. | Fringe effect of electrical capacitance and resistance tomography sensors | |
| Kang et al. | Direct sampling method for imaging small dielectric inhomogeneities: analysis and improvement | |
| CN102854499A (en) | Three-dimensional electromagnetic imaging method based on contrast source inversion algorithm | |
| WO2020113671A1 (en) | System and method for detecting electromagnetic characteristic of object by using terahertz electromagnetic wave | |
| Wang et al. | Imaging wet granules with different flow patterns by electrical capacitance tomography and microwave tomography | |
| Ali et al. | Design and evaluation of a flexible dual-band meander line monopole antenna for on-and off-body healthcare applications | |
| Li et al. | Detection and analysis of metallic contaminants in dry foods using a microwave resonator sensor | |
| CN204287072U (en) | A kind of microwave laminated imaging device of compact | |
| Khalesi et al. | A phantom investigation to quantify Huygens principle based microwave imaging for bone lesion detection | |
| CN204287070U (en) | A kind of microwave laminated imaging device based on mushroom antenna | |
| Saeidi et al. | High gain compact UWB antenna for ground penetrating radar detection and soil inspection | |
| Álvarez López et al. | A synthetic aperture radar (SAR)-based technique for microwave imaging and material characterization | |
| CN204374102U (en) | A kind of microwave laminated imaging device | |
| CN107884625B (en) | Terahertz detection method based on-chip orthogonal polarization antenna | |
| Islam et al. | A modified G auss‐N ewton algorithm for fast microwave imaging using near‐field probes | |
| CN104459689B (en) | A kind of electromagnetic wave tomography device and method | |
| CN204287071U (en) | A kind of microwave laminated imaging device based on 3D antenna | |
| CN204269822U (en) | A kind of electromagnetic wave tomography device | |
| Alqahtani et al. | Slotted monopole patch antenna for microwave-based head imaging applications | |
| CN204269567U (en) | A kind of microwave laminated imaging device of miniaturization | |
| Kapilevich et al. | Application of resonant monopole antenna for determination of complex permittivity of liquids, powdered and granular materials | |
| Geffrin et al. | Electromagnetic three-dimensional reconstruction of targets from free space experimental data |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20200129 |