CN108736126A - Flexible conformal double frequency-band capsule antenna - Google Patents
Flexible conformal double frequency-band capsule antenna Download PDFInfo
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- CN108736126A CN108736126A CN201810425906.6A CN201810425906A CN108736126A CN 108736126 A CN108736126 A CN 108736126A CN 201810425906 A CN201810425906 A CN 201810425906A CN 108736126 A CN108736126 A CN 108736126A
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- capsule
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
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- 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
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- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of conformal double frequency-band capsule antennas of flexibility, include the Capsules being made of flexible media, the inside capsule wall is attached with metal floor, and the metal floor offers the line of rabbet joint of terminal open circuit, and the capsule outer walls are equipped with the feeder line in bending structure.The present invention compensates for the vacancy of conformal double frequency-band capsule antenna flexible, and theoretical and simulation result shows effectiveness of the invention；Antenna is small in the space that capsule occupies；Radiating aperture is big.
Description
Technical field
The present invention relates to a kind of capsule-types for being wirelessly communicated inside and outside human body to be implanted into antenna more particularly to a kind of flexibility altogether
Shape double frequency-band capsule antenna.
Background technology
Implantation antenna applied to inside of human body can be by the inside of human body real-time data transmission monitored to body surface or body
Outside, huge application value and research significance are embodied in health medical treatment field.Since the volume of implantation equipment is limited to human body
This special application environment, it is desirable that all kinds of devices in equipment all realize miniaturization as far as possible, and therefore, the present invention is by adopting
Conformal implantation antenna is studied with flexible media, antenna is made to be attached on appts wall, to reduce its space occupied as far as possible.
One of typical case of flexible antennas is wireless capsule endoscope system, and clinician can be allowed directly to observe in human body alimentary canal
Image, with it is convenient, noninvasive, painless, without cross-infection, do not influence patient normal work the advantages that, disease of digestive tract diagnose
And therapy field shows important research significance and application value.
The conformal capsule antenna of many literature research, such as S.Yun in 2010 are proposed in capsule outer walls structure one
The loop antenna in broadband；Y.X.Guo team in 2015 proposes the wideband dipole structure of inside capsule wall structure；As of late, exist
D.Nikolayev in 2017 etc. proposes the capsule antenna for the miniaturization that a capsule diameter is 7mm, and wherein capsule wall thickness is
0.5mm uses stepped impedance harmonic technology that antenna in 434MHz, is then depended on Antenna Design resonance to conformal fashion in literary
In inside capsule wall to reach miniaturization effect.However above-mentioned antenna is all the capsule antenna of one-segment resonance.In addition, broadband day
Line also receives the research of scholar, such as Rula S.Alrawashdeh in 2015 propose the conformal capsule day of a ultra wide band
Line, introduces complementary split ring resonance structure, and working band covers MedRadio frequency ranges and multiple ISM bands.
But conformal double frequency-band capsule antenna flexible is not yet reported that.
Invention content
Goal of the invention：The present invention provides a kind of conformal double frequency-band capsule antennas of flexibility, compensate for flexible conformal double frequency-band
The vacancy of capsule antenna.
Technical solution：The conformal double frequency-band capsule antenna of flexibility of the present invention, includes the Capsules being made of flexible media,
The inside capsule wall is attached with metal floor, and the metal floor offers the line of rabbet joint of terminal open circuit, and the capsule outer walls are set
There is the feeder line in bending structure.
To make antenna occupy few space in capsule, using flexible dielectric substrate as capsule wall and antenna medium
Substrate.
Wherein, the capsule is cylindrical, based on the considerations of capsule working environment be inside of human body, in conjunction in existing capsule
Sight glass size, capsule diameter 9-12mm, preferably 10mm or 11mm.
In conjunction with capsule particular surroundings, when flexible media is processed into cylindric conduct capsule wall, metal floor is attached to soft
Property dielectric surface, is in direct contact with air dielectric；Feeder line is in flexible media outer wall position, is in direct contact with tissue, energy
Amount is coupled into the line of rabbet joint by feeder line and forms radiation.
Wherein, the line of rabbet joint is in " q " font.Antenna energy is mainly gone out by line of rabbet joint gap radiation.
Feeder line in bending by lengthening feed line length in limited areal, to extend current path, to realize antenna
Miniaturization effect.
Wherein, the feeder terminal is equipped with connection feeder line and the short circuit metal of metal floor is followed closely.Short circuit metal follows closely position position
In line of rabbet joint edge to enhance the coupling of energy, to obtain better impedance matching, broadband performance is realized.
The flexible media is biocompatible media, preferably polyimides, polyamide, polytetrafluoroethylene (PTFE) and polyether-ether-ketone
One or more of, permittivity εrFor 3-3.3, preferably 3.15；Thickness is 0.1-0.14mm, preferably 0.12mm.
Wherein, it is 47-53 Ω, preferably 50 Ω that the feeder line, which uses microstrip feed line, the microstrip feed line port Impedance,.Energy
It is coupled into the ground line of rabbet joint by microstrip feed line, the length of microstrip feed line and " q " font groove line length of terminal open circuit codetermine
The resonance frequency point of antenna.
Advantageous effect：1, the present invention compensates for the vacancy of conformal double frequency-band capsule antenna flexible, theoretical and simulation result
Show effectiveness of the invention；2, antenna is small in the space that capsule occupies；3, radiating aperture is big；It 4, can be according to capsule
Environment meets the specific demand of capsule antenna；5, microstrip coupled feed is bent, more introduces short circuit nail to enhance energy coupling, to reach
To better impedance matching；6, using line of rabbet joint open circuit gap radiation, gap codetermines resonance frequency point with feeder line.
Description of the drawings
Fig. 1 is the structural schematic diagram and simulated environment figure of the present invention；
Fig. 2 is the tile arrangement schematic diagram of the present invention；
Fig. 3 is the floor schematic diagram of present invention load " q " font line of rabbet joint；
Fig. 4 is the S parameter analogous diagram of the present invention.
Specific implementation mode
Referring to Fig. 1, Fig. 2 and Fig. 3, the conformal double frequency-band capsule antenna of flexibility described in one embodiment of the invention, including by soft
Property the Capsules 1 that constitute of medium, 1 inner wall of capsule is attached with metal floor 2, and metal floor 2 offers the line of rabbet joint of terminal open circuit
3, and 1 outer wall of capsule is equipped with the feeder line 4 in bending structure, 4 end of feeder line is equipped with connection feeder line 4 and the metal of metal floor 2 is short
Traffic stud 5.
Capsule 1 is diametrically the cylindric of 10mm, and feeder line 4 is the microstrip feed line of 50 Ω of port Impedance.
It is suitable for human body environments, in conjunction with 1 special tectonic of capsule, by permittivity εrIt is 0.12mm's for 3.15, thickness
Flexible media forms cylindrical structure as capsule wall.
Metal floor 2 is built in 1 inner wall of capsule, is in direct contact with 1 inner air medium 6 of capsule；It is set on metal floor 2
" q " the font line of rabbet joint 3,3 each section equivalent width of the line of rabbet joint, and terminal open circuit.
Microstrip feed line structure is in 1 outer wall of capsule, and using bending structure, microstrip feed line and 1 outside tissue 7 of capsule are direct
Contact.
Short circuit metal nail 5 is located at microstrip feed line end, connection microstrip feed line and metal floor 2, and short circuit metal nail 5 puts position
Rest against nearly 3 edge of " q " the font line of rabbet joint.
Working principle of the present invention is as follows：
It is illustrated in figure 4 the emulation S parameter figure of antenna.The antenna of the present invention has good dual-band performance,
MedRadio band bandwidths reach 16.1%, and 0.430GHz is arrived in frequency band covering 0.366；Reach 47% in ISM band bandwidth, frequency band
1.22GHz is arrived in covering 0.756.
In simulation process, capsule 1 a diameter of 10mm that flexible media surrounds is consistent with 1 endoscope size of existing capsule；People
The dielectric coefficient and conductivity setting, parameter of the skin histology of body tissue 7 constantly change with frequency；7 size of tissue is set
It is 180mm × 180mm × 60mm (length × width × height) to simulate torso model；The length of the line of rabbet joint 3 and microstrip feed line determines day
The resonance frequency point of line；The placement position of short circuit metal nail 5 plays a decisive role to impedance matching.
Claims (9)
1. a kind of conformal double frequency-band capsule antenna of flexibility, it is characterised in that：Include the Capsules (1) being made of flexible media,
Capsule (1) inner wall is attached with metal floor (2), and the metal floor (2) offers the line of rabbet joint (3) of terminal open circuit, and institute
Capsule (1) outer wall is stated equipped with the feeder line (4) in bending structure.
2. the conformal double frequency-band capsule antenna of flexibility according to claim 1, it is characterised in that：Feeder line (4) end is set
There is short circuit metal nail (5) of the connection feeder line (4) with metal floor (2).
3. the conformal double frequency-band capsule antenna of flexibility according to claim 1, it is characterised in that：The capsule (1) is in cylinder
Shape.
4. the conformal double frequency-band capsule antenna of flexibility according to claim 1, it is characterised in that：The capsule (1) is a diameter of
9-12mm。
5. the conformal double frequency-band capsule antenna of flexibility according to claim 1, it is characterised in that：The flexible media is biology
Media compatibility.
6. the conformal double frequency-band capsule antenna of flexibility according to claim 5, it is characterised in that：The dielectric of the flexible media
Constant εrFor 3-3.3, thickness 0.1-0.14mm.
7. the conformal double frequency-band capsule antenna of flexibility according to claim 1, it is characterised in that：The line of rabbet joint (3) is in " q " word
Type.
8. the conformal double frequency-band capsule antenna of flexibility according to claim 1 or 2, it is characterised in that：The feeder line (4) uses
Microstrip feed line.
9. the conformal double frequency-band capsule antenna of flexibility according to claim 8, it is characterised in that：The microstrip feed line port resistance
Resist for 47-53 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425906.6A CN108736126B (en) | 2018-05-07 | 2018-05-07 | Flexible conformal dual-band capsule antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425906.6A CN108736126B (en) | 2018-05-07 | 2018-05-07 | Flexible conformal dual-band capsule antenna |
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| Publication Number | Publication Date |
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| CN108736126A true CN108736126A (en) | 2018-11-02 |
| CN108736126B CN108736126B (en) | 2023-07-21 |
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| CN201810425906.6A Active CN108736126B (en) | 2018-05-07 | 2018-05-07 | Flexible conformal dual-band capsule antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111082222A (en) * | 2019-11-08 | 2020-04-28 | 京信通信技术(广州)有限公司 | Antenna device and antenna radiation unit |
| CN111885355A (en) * | 2020-07-21 | 2020-11-03 | 深圳市资福医疗技术有限公司 | Communication method of capsule endoscope |
| CN115882213A (en) * | 2023-02-15 | 2023-03-31 | 苏州浪潮智能科技有限公司 | Cylindrical dual-band antenna and electronic equipment |
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| CN1135665A (en) * | 1995-02-14 | 1996-11-13 | 三菱电机株式会社 | Antenna equipment using short sticking-patch antenna |
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| CN103825088A (en) * | 2014-01-23 | 2014-05-28 | 西交利物浦大学 | Dual-frequency microstrip antenna applied to wireless capsule endoscope |
| CN103904425A (en) * | 2014-01-23 | 2014-07-02 | 西交利物浦大学 | Dual-frequency microstrip antenna of wireless capsule endoscope |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082222A (en) * | 2019-11-08 | 2020-04-28 | 京信通信技术(广州)有限公司 | Antenna device and antenna radiation unit |
| CN111082222B (en) * | 2019-11-08 | 2021-12-17 | 京信通信技术(广州)有限公司 | Antenna device and antenna radiation unit |
| 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 |
| CN111885355A (en) * | 2020-07-21 | 2020-11-03 | 深圳市资福医疗技术有限公司 | Communication method of capsule endoscope |
| CN115882213A (en) * | 2023-02-15 | 2023-03-31 | 苏州浪潮智能科技有限公司 | Cylindrical dual-band antenna and electronic equipment |
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| CN108736126B (en) | 2023-07-21 |
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