CN108448233A - A kind of multipolarization conformal antenna for capsule endoscope - Google Patents
A kind of multipolarization conformal antenna for capsule endoscope Download PDFInfo
- Publication number
- CN108448233A CN108448233A CN201810342258.8A CN201810342258A CN108448233A CN 108448233 A CN108448233 A CN 108448233A CN 201810342258 A CN201810342258 A CN 201810342258A CN 108448233 A CN108448233 A CN 108448233A
- Authority
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- China
- Prior art keywords
- conformal
- multipolarization
- antenna
- medium substrate
- capsule
- 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
- 239000002775 capsule Substances 0.000 title claims abstract description 44
- 230000005855 radiation Effects 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000005452 bending Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000010287 polarization Effects 0.000 claims description 10
- 238000010276 construction Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000003854 Surface Print Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
Abstract
The invention discloses a kind of multipolarization conformal antennas for capsule endoscope, including aerial radiation chip unit, metal floor, medium substrate, coaxial feed and capsule shell, the antenna radiation unit is located at the upper surface of medium substrate, the metal floor patch is located at the lower surface of the medium substrate, the entire conformal bending of antenna is nested in capsule, forms hollow structure inside.The aerial radiation chip unit generally parallelogram sturcutre connects rectangle patch vertically above-mentioned notching construction near distributing point about symmetrical two notching constructions of the longitudinal axis, inside high impedance line.The antenna is by 50 Ω coaxial cables to radiation patch unit into row energization.The present invention has many advantages, such as that flexible is conformal, occupies small capsule spatial volume, multipolarization, has electromagnetism interference performance, broadband, suitable for capsule endoscope system, the radiation-curable or arbitrary polarized wave of reception.
Description
Technical field
The present invention relates to the communications fields, and in particular to a kind of multipolarization conformal antenna for capsule endoscope.
Background technology
Wireless capsule endoscope system to establish it is internal with it is external between reliably communicate, depend greatly on glue
The antenna performance quality in intracapsular portion.Position and direction of the capsule in human body have uncertainty, and the space of capsule
It is limited, it is also necessary to accommodate other electronic components：Transceiver, battery, LED light, camera etc..So Antenna Design needs to consider
Above-mentioned factors：Tissue has consumption dispersion characteristics, electromagnetic compatibility problem, miniaturization etc..
It is applied in the antenna technology of capsule endoscope at present, it is most of to be designed as built-in helical antenna or flat plane antenna,
Show volume is big, polarization it is volatile with the shortcomings of, it is many insufficient so that current capsule endoscope antenna is difficult to adapt to human body
And the application environment requirement complicated and changeable of capsule.
Invention content
In order to overcome shortcoming and deficiency of the existing technology, the present invention to provide a kind of multipolarization for capsule endoscope
Conformal antenna.
The present invention adopts the following technical scheme that：
A kind of multipolarization conformal antenna for capsule endoscope, including capsule shell, antenna radiation unit, metal
Plate, medium substrate and coaxial feed, the antenna radiation unit are located at the upper surface of medium substrate, and the metal floor, which is located at, to be situated between
The lower surface of matter substrate, the entire conformal bending of antenna are nested in capsule shell, form hollow structure inside.
The conformal bending of entire antenna is nested in capsule shell, forms hollow structure inside, specially：Aerial radiation
Unit forms Cylinder Surface structure on the outside, and metal floor forms closed Cylinder Surface structure in inside, as electromagnetic shielding
Layer.
The antenna radiation unit, medium substrate and metal floor are parallelogram sturcutre.
The antenna radiation unit is made of two flutings and two embedded rectangle patches, described two rectangle patches
And two flutings are symmetrical about the medium substrate longitudinal axis.
Described two embedded rectangle patches connect antenna radiation unit by high impedance line respectively, and high impedance line is vertical
In fluting, after conformal bending, the polarization of Y-direction and Z-direction is formed.
The coaxial feed is made of feed port and coaxial cable, and the feed port is located at the longitudinal axis of medium substrate
On, two flutings form polarization in X direction positioned at the both sides of feed port after conformal bending.
The coaxial cable inner core radius is 0.35mm, and the outer core radius of coaxial cable is 0.805mm.
The capsule shell thickness is 0.1mm, a diameter of 11mm, is highly 26mm.
The width of fluting is 0.5mm, a length of 6.6mm.
Beneficial effects of the present invention：
(1) present invention is conformal with flexible, it is small, radiation-curable to occupy capsule or receives arbitrary polarization
Wave has the characteristics that electromagnetism interference performance；
(2) present invention changes current path by changing the structure of radiation patch, is deposited on tri- directions X, Y, Z
In apparent current path, can in the continuous motion process of effective solution capsule in vivo between apparatus, extracorporeal receiving
Polarization mismatch problem.
Description of the drawings
Fig. 1 is a kind of overall structure figure of multipolarization conformal antenna for capsule endoscope of the invention；
Fig. 2 (a) is a kind of planar development vertical view of multipolarization conformal antenna for capsule endoscope of the invention；
Fig. 2 (b) is a kind of planar development side view of multipolarization conformal antenna for capsule endoscope of the invention；
Fig. 3 is a kind of Parameter Map of multipolarization conformal antenna for capsule endoscope of the invention；
Fig. 4 is that a kind of multipolarization conformal antenna for capsule endoscope of the invention is flat when centre frequency is 2.45GHz
The S parameter curve of face and three-dimensional conformal structure；
Fig. 5 (a) is a kind of multipolarization conformal antenna for capsule endoscope of the invention when centre frequency is 2.45GHz
Three-dimensional current path figure.
Fig. 5 (b) is a kind of multipolarization conformal antenna for capsule endoscope of the invention when centre frequency is 2.45GHz
The faces XOY on current path figure.
Fig. 5 (c) is a kind of multipolarization conformal antenna for capsule endoscope of the invention when centre frequency is 2.45GHz
The faces XOZ on current path figure.
Fig. 6 is a kind of multipolarization conformal antenna for capsule endoscope of the invention when centre frequency is 2.45GHz
Gain pattern.
Fig. 7 is a kind of multipolarization conformal antenna working environment schematic diagram for capsule endoscope of the invention.
Specific implementation mode
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As shown in Figure 1, a kind of multipolarization conformal antenna for capsule endoscope, antenna 2 is by being bent conformal be nested in
Inside capsule shell 1, hollow structure inside is formed.The capsule shell thickness is 0.1mm, is highly 26mm, a diameter of 11mm,
So that antenna have match with human body radiation, biocompatibility, and to tissue have the function of isolation and insulation, make simultaneously
For the protective layer of antenna.
As shown in Fig. 2 (a) and Fig. 2 (b), a kind of multipolarization conformal antenna for capsule endoscope, including medium substrate
3, antenna radiation unit 4, metal floor 9 and coaxial feed 6.The medium substrate is single layer structure, thereon surface printing antenna
Radiating element 4, the lower surface type metal floor 9 of the medium substrate.After the antenna radiation unit bending is conformal on the outside
Formed Cylinder Surface structure, the metal floor patch be bent it is conformal after inside formed complete closure Cylinder Surface structure,
As electro-magnetic screen layer.
The antenna radiation unit 4 is parallelogram sturcutre, embedded by symmetrically slot about the longitudinal axis 7A, 7B and two
Rectangle patch 5A, 5B constitute.
The embedded rectangle patch is connected to antenna radiation unit each by embedded high impedance line 8A, a 8B
On, two high impedance lines are symmetrical about the longitudinal axis, and the width of the high impedance line is 0.5mm.
The coaxial feed includes feed port and coaxial cable, and the coaxial feed is located at the longitudinal axis of antenna radiation unit
On, the feed port is located on the longitudinal axis of medium substrate, and two flutings are positioned at the both sides of feed port, after conformal bending
Form polarization in X direction.
It is described symmetrically to be slotted about the longitudinal axis positioned at the both sides of coaxial port, there is the work(for adjusting impedance matching and optimization
Can, polarization in X direction is formed after conformal bending.
The metal floor 9 is parallelogram sturcutre, is printed on the lower surface of the medium substrate.
The medium substrate 3, antenna radiation unit 4, metal floor 9 are parallelogram, are nested in after bending is conformal
The inside of capsule shell forms hollow structure.
In the present embodiment, the medium substrate 3 uses flexible material Polyimide, relative dielectric constant 3.5, electricity
Loss angle tangent is 0.0035, thickness 0.2mm.Medium substrate is parallelogram sturcutre, a length of 33mm, width 8mm, a height of
The general outline of 0.2mm, the antenna radiation unit and the metal floor is a parallelogram.It is being bent conformal process
Middle both sides short side forms coupling, and it is 8mm to ultimately form height, and outer diameter 5.4mm, internal diameter is the hollow columnar structures of 5.2mm.
The coaxial excitation is to antenna radiation unit by coaxial port into row energization, and distributing point is located at the longitudinally asymmetric of radiation patch
On axis.
As shown in figure 3, specific parameter is the length of radiation patch：L1=32mm, it is wide：W1=7mm, internal rectangle patch
Length：L2=8mm, it is wide：It is S1=0.5mm at a distance from W2=5mm, with parallelogram radiation patch, it is symmetrical about the longitudinal axis
Fluting grow：W3=6.6mm, it is wide：L3=0.5mm, coaxial inner core radius are 0.35mm.
As shown in Fig. 4, Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) and Fig. 6, the present invention uses parallelogram sturcutre, total in bending
Coupling is formed in shape, is realized the impedance matching on relatively thin medium substrate, is reached miniaturization purpose；Pass through the modification of orientation
Current path, produce in X direction 10 and bending direction 11 current path, the wherein current path of bending direction 11 can divide
Solution is the current path along Y-direction 13 and along Z-direction 12, realizes the multipolarization in three directions.Capsule endoscope can be overcome
In continuous motion process between apparatus, extracorporeal receiving caused by polarization mismatch problem.Antenna impedance bandwidth is 13.9%,
Cover the ISM band of 2.45GHz.
As shown in fig. 7, human muscle's square that it is 100mm that Antenna Operation environment, which is the length of side, implantation depth 50mm.People
Relative dielectric constant ε of the body musculature when frequency is 2.45GHzrIt has been provided respectively in figure with conductivity σ.
The antenna is conformal with flexible, it is small to occupy capsule, with electromagnetism interference performance, multipolarization
The advantages that.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (9)
1. a kind of multipolarization conformal antenna for capsule endoscope, including capsule shell, which is characterized in that further include antenna spoke
Unit, metal floor, medium substrate and coaxial feed are penetrated, the antenna radiation unit is located at the upper surface of medium substrate, described
Metal floor is located at the lower surface of medium substrate, and the entire conformal bending of antenna is nested in capsule shell, forms inner hollow knot
Structure.
2. multipolarization conformal antenna according to claim 1, which is characterized in that the entire conformal bending of antenna is nested in
In capsule shell, hollow structure inside is formed, specially：Antenna radiation unit forms Cylinder Surface structure on the outside, metal
Plate forms closed Cylinder Surface structure in inside, as electro-magnetic screen layer.
3. multipolarization conformal antenna according to claim 1, which is characterized in that the antenna radiation unit, medium substrate
And metal floor is parallelogram sturcutre.
4. multipolarization conformal antenna according to claim 1, which is characterized in that the antenna radiation unit is slotted by two
And two embedded rectangle patches are constituted, described two rectangle patches and two flutings are symmetrical about the medium substrate longitudinal axis.
5. multipolarization conformal antenna according to claim 4, which is characterized in that described two embedded rectangle patches point
Antenna radiation unit is not connected by high impedance line, high impedance line is perpendicular to fluting, after conformal bending, forms Y-direction and the side Z
To polarization.
6. multipolarization conformal antenna according to claim 4, which is characterized in that the coaxial feed is by feed port and together
Shaft cable is constituted, and the feed port is located on the longitudinal axis of medium substrate, and two flutings are positioned at the both sides of feed port, altogether
Polarization in X direction is formed after shape bending.
7. multipolarization conformal antenna according to claim 6, which is characterized in that coaxial cable inner core radius is 0.35mm,
The outer core radius of coaxial cable is 0.805mm.
8. multipolarization conformal antenna according to claim 1, which is characterized in that the capsule shell thickness is 0.1mm, directly
Diameter is 11mm, is highly 26mm.
9. multipolarization conformal antenna according to claim 5, which is characterized in that the width of fluting is 0.5mm, a length of
6.6mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342258.8A CN108448233A (en) | 2018-04-17 | 2018-04-17 | A kind of multipolarization conformal antenna for capsule endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342258.8A CN108448233A (en) | 2018-04-17 | 2018-04-17 | A kind of multipolarization conformal antenna for capsule endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108448233A true CN108448233A (en) | 2018-08-24 |
Family
ID=63200066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810342258.8A Pending CN108448233A (en) | 2018-04-17 | 2018-04-17 | A kind of multipolarization conformal antenna for capsule endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108448233A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216910A (en) * | 2018-09-26 | 2019-01-15 | 华南理工大学 | A kind of omni-directional conformal antenna for capsule endoscope |
| CN109301464A (en) * | 2018-09-21 | 2019-02-01 | 西交利物浦大学 | The adherent antenna of Wireless capsule endoscope spill |
| CN111012290A (en) * | 2019-12-20 | 2020-04-17 | 浙江清华柔性电子技术研究院 | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system |
| CN111585009A (en) * | 2020-06-12 | 2020-08-25 | 南京信息工程大学 | Omnidirectional circularly polarized capsule antenna |
| CN112421202A (en) * | 2020-11-06 | 2021-02-26 | 中国电子科技集团公司第三十八研究所 | Low-profile conformal array antenna with any shape |
| CN113054445A (en) * | 2020-10-22 | 2021-06-29 | 西南交通大学 | Conformal array antenna of capsule endoscope based on ferrite medium |
| WO2023002888A1 (en) * | 2021-07-21 | 2023-01-26 | セイコーグループ株式会社 | Electric wave transmission device and wireless communication system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0701090D0 (en) * | 2007-01-19 | 2007-02-28 | Plasma Antennas Ltd | A selectable beam antenna |
| CN103457017A (en) * | 2013-09-06 | 2013-12-18 | 南京理工大学 | Three-frequency dual polarization cone conformal micro-strip antenna array |
| CN105932412A (en) * | 2016-05-13 | 2016-09-07 | 华南理工大学 | Implantable-type capsule antenna for biomedical remote measurement |
| CN208299008U (en) * | 2018-04-17 | 2018-12-28 | 华南理工大学 | A kind of multipolarization conformal antenna for capsule endoscope |
-
2018
- 2018-04-17 CN CN201810342258.8A patent/CN108448233A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0701090D0 (en) * | 2007-01-19 | 2007-02-28 | Plasma Antennas Ltd | A selectable beam antenna |
| CN103457017A (en) * | 2013-09-06 | 2013-12-18 | 南京理工大学 | Three-frequency dual polarization cone conformal micro-strip antenna array |
| CN105932412A (en) * | 2016-05-13 | 2016-09-07 | 华南理工大学 | Implantable-type capsule antenna for biomedical remote measurement |
| CN208299008U (en) * | 2018-04-17 | 2018-12-28 | 华南理工大学 | A kind of multipolarization conformal antenna for capsule endoscope |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301464A (en) * | 2018-09-21 | 2019-02-01 | 西交利物浦大学 | The adherent antenna of Wireless capsule endoscope spill |
| CN109216910A (en) * | 2018-09-26 | 2019-01-15 | 华南理工大学 | A kind of omni-directional conformal antenna for capsule endoscope |
| CN109216910B (en) * | 2018-09-26 | 2023-11-10 | 华南理工大学 | Omnidirectional conformal antenna for capsule endoscope |
| CN111012290A (en) * | 2019-12-20 | 2020-04-17 | 浙江清华柔性电子技术研究院 | Conformal capsule antenna structure, preparation method and wireless capsule endoscope system |
| CN111585009A (en) * | 2020-06-12 | 2020-08-25 | 南京信息工程大学 | Omnidirectional circularly polarized capsule antenna |
| CN113054445A (en) * | 2020-10-22 | 2021-06-29 | 西南交通大学 | Conformal array antenna of capsule endoscope based on ferrite medium |
| CN112421202A (en) * | 2020-11-06 | 2021-02-26 | 中国电子科技集团公司第三十八研究所 | Low-profile conformal array antenna with any shape |
| WO2023002888A1 (en) * | 2021-07-21 | 2023-01-26 | セイコーグループ株式会社 | Electric wave transmission device and wireless communication system |
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Application publication date: 20180824 |