CN204375919U - A kind of fractal implantable antenna being operated in MICS frequency range - Google Patents
A kind of fractal implantable antenna being operated in MICS frequency range Download PDFInfo
- Publication number
- CN204375919U CN204375919U CN201520033739.2U CN201520033739U CN204375919U CN 204375919 U CN204375919 U CN 204375919U CN 201520033739 U CN201520033739 U CN 201520033739U CN 204375919 U CN204375919 U CN 204375919U
- Authority
- CN
- China
- Prior art keywords
- antenna
- radiation unit
- medium substrate
- antenna radiation
- frequency range
- 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
- Electrotherapy Devices (AREA)
Abstract
The utility model discloses a kind of fractal implantable antenna being operated in MICS frequency range, be implanted to the muscle layer of human body, comprise antenna radiation unit, differential feed copper post, medium substrate and floor, described antenna radiation unit is positioned at the upper surface of medium substrate, floor is positioned at the lower surface of medium substrate, described differential feed copper post is specially 2, is arranged on antenna radiation unit, and connects differential signal feeder line through medium substrate.Adopt fractal technology to increase current path thus make antenna can realize miniaturization in MICS frequency range, there is wide frequency band, the differential transmission coefficient Γ of this external MICS band antenna simultaneously
dif<-20dB.
Description
Technical field
The utility model relates to biologic medical field, is specifically related to a kind of fractal implantable antenna being operated in MICS frequency range.
Background technology
Current implantable medical device has been used to real-time monitor patients physiological and biochemical property, quality of making the life better.These implantable medical devices used comprise cardiac pacemaker, vagus nerve stimulator, artificial cochlea, artificial retina etc.In so numerous implantable medical devices, the antenna of implantable is its indispensable part, and it plays the important function for carrying out Wireless Data Transmission between the implantating biological Medical Devices in human body and external base station.Therefore need also to prevent body fluid to the corrosion of antenna while of adopting biocompatible material to come isolated antennas and biological tissue to prevent human body from producing rejection to antenna because implanted antenna needs to be implanted in human body.The frequency range that implanted antenna in biologic medical adopts usually is that communication system (Medical Implant Communication System is implanted in medical treatment, MICS) frequency range, this frequency range is the frequency range that can be used for human body radio communication that ETSI (European Telecommunications Standards Institute, ETSI) specifies.But due to the electromagnetic wavelength of MICS frequency range longer, therefore need to adopt miniaturization technology to reduce the size of antenna, as adopted the substrate of high-k, adopting the structure of stack, adopting meandered antenna etc.Secondly difference channel is generally adopted to carry out processing signals in the microchip radio system adopted in implantable medical device, therefore the antenna of differential feed technology is adopted to be convenient to system interface, thus the loss eliminating increase balun (Ba Lun) and bring.
Utility model content
In order to overcome the shortcoming of prior art existence with not enough, the utility model provides a kind of fractal implantable antenna being operated in MICS frequency range.
The utility model adopts following technical scheme:
A kind of fractal implantable antenna being operated in MICS frequency range, be implanted to the muscle layer of human body, comprise antenna radiation unit, differential feed copper post, medium substrate and floor, described antenna radiation unit is positioned at the upper surface of medium substrate, floor is positioned at the lower surface of medium substrate, and described differential feed copper post is specially 2, and symmetrical about the median vertical line of antenna radiation unit, be arranged on antenna radiation unit, and connect differential signal feeder line through medium substrate.
Described antenna radiation unit is made up of 4 rank hibert curves.
Described antenna radiation unit is square, and the length of side is 9.3mm, and the live width of described hibert curve is 0.3mm, and the width of single elementary cell is 0.9mm.
The diameter of described differential feed copper post is 0.7mm.
Described differential feed copper post distance antenna radiation unit top is 2.5mm, and the left and right edges distance of distance antenna radiation unit is 1.3mm.
The beneficial effects of the utility model:
Adopt fractal technology to increase antenna radiation unit current path thus make antenna can realize miniaturization in MICS frequency range, there is wider frequency band, this external MICS frequency range differential transmission coefficient Γ simultaneously
dif<-20dB.Differential feed technology is used to make antenna better can connect the radio frequency integrated circuit of implantable medical equipment.Adopt the dielectric material of high-k to reduce electromagnetic wavelength, and then realize the miniaturization of antenna.Adopt biocompatible material to come isolated antennas and biological tissue, avoid human body to produce rejection and active bio tissue to the corrosion of antenna to antenna.
Accompanying drawing explanation
Fig. 1 is the structure chart being operated in the fractal implantable antenna of MICS frequency range of a kind of differential feed of the utility model;
Fig. 2 is the Parameter Map being operated in the fractal implantable antenna of MICS frequency range of a kind of differential feed of the utility model the present embodiment;
Fig. 3 is the reflectance difference charts for finned heat being operated in the fractal implantable antenna of MICS frequency range of a kind of differential feed of the utility model;
Fig. 4 is the directional diagram at 403MHz being operated in the fractal implantable antenna of MICS frequency range of a kind of differential feed of the utility model;
Fig. 5 is a kind of fractal implantable Antenna Operation environment schematic being operated in MICS frequency range of differential feed.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As Fig. 1, shown in 2, a kind of fractal implantable antenna being operated in MICS frequency range, comprise antenna radiation unit 1, differential feed copper post 2A-2B, medium substrate 3 and floor 4, described antenna radiation unit 1 is positioned at the upper surface of medium substrate 3, floor 4 is positioned at the lower surface of medium substrate 3, described differential feed copper post is specially 2, symmetry is arranged on antenna radiation unit 1, median vertical line about antenna radiation unit is symmetrical, and connect differential signal feeder line through medium substrate 3, differential signal feeder line is obtained by two bronze medal post feed antennas, described floor 4 is positioned at the lower surface of medium substrate, and have circular port and make differential signal line be linked into differential feed copper post.Also comprise biocompatible material film, the surface of the whole antenna of this plastic film covering described, thickness is 20 μm, the implantable muscle layer to human body of whole antenna.
Described antenna radiation unit 1 is made up of 4 rank hibert curves, and whole antenna is square length of side L is 9.3mm.Described hibert curve antenna radiation unit live width w is 0.3mm, and the width w1 of single elementary cell is 0.9mm.Antenna reflectance difference coefficient in whole MICS frequency range (402-405MHz) is all less than-20dB, and the beamwidth of antenna is 372-449MHz.And there is good radiation characteristic.
Described medium substrate 3 is foursquare Rogers RO3210 medium substrate, and its length of side L is 9.3mm, and thickness h is 0.635mm, relative dielectric constant ε
rbe 10.2, losstangenttanδ is 0.003.
The diameter d of described differential feed copper post 2A-2B is 0.7mm, and it be 1.3mm, d2 is 2.5mm that the distance of copper post and antenna edge is respectively d1.
Described biocompatible material film is Parylene-C, its relative dielectric constant ε
rbe 2.95, losstangenttanδ is 0.013.
As shown in Figure 5, three layers of tissue are skin, fat, muscle from top to bottom respectively, are respectively organized in relative dielectric constant ε when frequency is 403MHz
rprovide respectively in the drawings with conductivity σ and density p.The operational environment of antenna is the muscle layer being implanted to human body, and the change of its implantation depth dp is little on antenna performance impact.
As shown in Figure 3, antenna is all less than-20dB at the reflectance difference coefficient of different implantation depth in MICS frequency range, and the frequency range that antenna can cover is 372-449MHz.
As shown in Figure 4, antenna is in XOZ plane, and the antenna pattern of YOZ plane all has well outwards radiation characteristic.
This antenna has miniaturized feature.Adopt fractal technology to increase antenna radiation unit current path thus make antenna can realize miniaturization in MICS frequency range, there is wide bandwidth, this external MICS frequency range differential transmission coefficient Γ simultaneously
dif<-20dB.Differential feed technology is used to make antenna better can connect the radio frequency integrated circuit of implantable medical equipment.Adopt the dielectric material of high-k can reduce the miniaturization that electromagnetic wavelength also can realize antenna.Adopt biocompatible material to come isolated antennas and biological tissue, avoid human body to produce rejection and human body environment to the corrosion of antenna to antenna.So can implantable medical device be applicable to.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (5)
1. one kind is operated in the fractal implantable antenna of MICS frequency range, be implanted to the muscle layer of human body, it is characterized in that, comprise antenna radiation unit, differential feed copper post, medium substrate and floor, described antenna radiation unit is positioned at the upper surface of medium substrate, and floor is positioned at the lower surface of medium substrate, described differential feed copper post is specially 2, and symmetrical about the median vertical line of antenna radiation unit, be arranged on antenna radiation unit, and connect differential signal feeder line through medium substrate.
2. antenna according to claim 1, is characterized in that, described antenna radiation unit is made up of 4 rank hibert curves.
3. antenna according to claim 2, is characterized in that, described antenna radiation unit is square, and the length of side is 9.3mm, and the live width of described hibert curve is 0.3mm, and the width of single elementary cell is 0.9mm.
4. antenna according to claim 1, is characterized in that, the diameter of described differential feed copper post is 0.7mm.
5. antenna according to claim 1, is characterized in that, described differential feed copper post distance antenna radiation unit top is 2.5mm, and the left and right edges distance of distance antenna radiation unit is 1.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033739.2U CN204375919U (en) | 2015-01-16 | 2015-01-16 | A kind of fractal implantable antenna being operated in MICS frequency range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520033739.2U CN204375919U (en) | 2015-01-16 | 2015-01-16 | A kind of fractal implantable antenna being operated in MICS frequency range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204375919U true CN204375919U (en) | 2015-06-03 |
Family
ID=53332109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520033739.2U Expired - Fee Related CN204375919U (en) | 2015-01-16 | 2015-01-16 | A kind of fractal implantable antenna being operated in MICS frequency range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204375919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638346A (en) * | 2015-01-16 | 2015-05-20 | 华南理工大学 | Fractal implantable antenna working at MICS (Medical Implant Communication System) frequency band |
-
2015
- 2015-01-16 CN CN201520033739.2U patent/CN204375919U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638346A (en) * | 2015-01-16 | 2015-05-20 | 华南理工大学 | Fractal implantable antenna working at MICS (Medical Implant Communication System) frequency band |
| CN104638346B (en) * | 2015-01-16 | 2018-05-15 | 华南理工大学 | A kind of point shape implantable antenna for being operated in MICS frequency ranges |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105024155B (en) | A kind of circular polarized antenna of loading complementary openings ring applied to biomedical telemetry | |
| CN104638346B (en) | A kind of point shape implantable antenna for being operated in MICS frequency ranges | |
| CN206098699U (en) | Antenna | |
| CN106505313B (en) | Differential dual-frequency broadband antenna applied to implantable medical device | |
| CN105305069B (en) | A kind of differential feed implanted circular polarized antenna for working in ISM band | |
| US20180342795A1 (en) | Miniaturized ultra-wideband antenna system for multiple bio-telemetric applications | |
| CN105846072B (en) | A kind of wide axis for biomedical telemetry is than wave beam circular polarized antenna | |
| CN107275773B (en) | Broadband miniaturized implantation antenna suitable for MICS frequency band | |
| CN107732420A (en) | A kind of antenna, implantable medical devices and Implanted medical system | |
| CN206271874U (en) | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices | |
| CN104577315A (en) | Novel stack-based planar inverted-F antenna applied to human body implantable equipment | |
| CN204375919U (en) | A kind of fractal implantable antenna being operated in MICS frequency range | |
| CN206650172U (en) | A kind of wearable turnover structure half module substrate integrates cavity antenna | |
| Ferdous et al. | Design and performance of miniaturized meandered patch antenna for implantable biomedical applications | |
| Ali et al. | Circural planner Inverted-F antenna for implantable biomedical applications | |
| Angeline J et al. | Design and analysis of a small implantable antenna for blood glucose monitoring | |
| CN205790392U (en) | Microstrip antenna and apply the implantable medical devices of this microstrip antenna | |
| CN109768371A (en) | The double frequency implanted antenna based on graphene for rehabilitation nursing device | |
| Lei et al. | A miniaturized implantable loop antenna at MICS and ISM bands for biomedical applications | |
| CN106486740A (en) | A kind of wideband implanted human body antenna being applied to portable medical | |
| CN204289705U (en) | A kind of novel stack planar inverted-F antenna being applied to human body implantable devices | |
| CN105140635A (en) | Miniature difference feed double-frequency fractal antenna capable of being implanted into human body | |
| CN204947081U (en) | A kind of miniaturized differential feed double frequency fractal antenna of human implantable | |
| Stoopman et al. | Sub-GHz UWB biomedical communication | |
| CN207542382U (en) | A kind of antenna, implantable medical devices and Implanted medical system |
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: 20180116 |