CN206271874U - A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices - Google Patents
A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices Download PDFInfo
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- CN206271874U CN206271874U CN201621403208.9U CN201621403208U CN206271874U CN 206271874 U CN206271874 U CN 206271874U CN 201621403208 U CN201621403208 U CN 201621403208U CN 206271874 U CN206271874 U CN 206271874U
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- floor
- radiation unit
- frequency wide
- band antenna
- antenna
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Abstract
The utility model discloses a kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices, including antenna radiation unit, grounding probe, floor and medium substrate, the antenna radiation unit is located at the upper surface of medium substrate, floor is located at the lower surface of medium substrate, the grounding probe is specially two, it is symmetrically mounted on medium substrate, and it is symmetrical on antenna radiation unit median vertical line, the antenna radiation unit is made up of the hibert curve of two deformations, and symmetrical on medium substrate median vertical line.The utility model uses fractal structure, and the miniaturization that the technologies such as spiral slot, high-k substrate, plane inverse-F structure realize antenna is opened on floor.
Description
Technical field
The utility model is related to biomedical sector, and in particular to a kind of difference being applied in implantable medical devices is double
Frequency broad-band antenna.
Background technology
Current implantable medical device has been used for monitor in real time patient's physiological and biochemical property, quality of making the life better.This
A little implantable medical devices being currently in use include pacemaker, vagus nerve stimulator, artificial cochlea, artificial retina
Deng.The antenna of implantable is its indispensable part in so numerous implantable medical devices, and it is human body that it is played
The important function of Wireless Data Transmission is carried out between interior implantating biological Medical Devices and external base station.Due to implanted day
Line needs to be implanted in human body therefore needs to use biocompatible material come isolated antennas and biological tissue to prevent human body to day
Line produces rejection to be also prevented from corrosion of the body fluid to antenna simultaneously.What the implanted antenna in terms of biologic medical was generally used
Frequency range is medical treatment implantation communication system (Medical Implant Communication System, MICS) frequency range, the frequency range
It is ETSI (European Telecommunications Standards Institute, ETSI) regulation
The frequency range that can be used for human body radio communication.Wavelength yet with the electromagnetic wave of MICS frequency ranges is more long, it is therefore desirable to using small
Type technology reduces the size of antenna, such as using the substrate of high-k, using the structure of stack, using meandered antenna
Deng.Secondly generally using difference channel come process signal in the microchip radio system for being used in implantable medical device, therefore
Antenna using differential feed technology is easy to system interface, is brought so as to eliminate increase balun (balun)
Loss.Also indicated that in correlative study analysis, reflectance difference coefficient curve of the antenna at ISM band is subject to antenna to process and weldering
The influence for connecing the factors such as error, biological tissue's electromagnetic property parameters change is obvious.The change of these factors may make antenna high
Frequency place covering band bending go out ISM band, in order to effectively avoid the generation of such case, it is desirable to antenna in ISM frequently
There is bandwidth wider at section.
Utility model content
For the shortcoming and deficiency that overcome prior art to exist, the utility model provides one kind and is applied to implantable medical device
Difference Dual-frequency wide-band antenna in tool.
The utility model is adopted the following technical scheme that：
A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices, is implanted to the skin layer of human body, including
Antenna radiation unit, grounding probe, floor and medium substrate, the antenna radiation unit are located at the upper surface of medium substrate, ground
Plate is located at the lower surface of medium substrate, and the grounding probe is specially two, is symmetrically mounted on medium substrate, and on antenna
Radiating element median vertical line is symmetrical, and the antenna radiation unit is made up of the hibert curve of two deformations, and on medium
Substrate median vertical line is symmetrical.
The structure of the hibert curves of two deformations is identical, specifically by single order Martin Hilb that Length x Width is different
Special fractal curve carries out contracting and stretches rotary splicing composition, and its splicing angle is 90 degree.
The floor is provided with two helicla flutes, and described two helicla flutes are symmetrical on floor perpendicular center line.
Two helical groove structures are identical, and the starting point of the helicla flute is located at floor transversal centerline lower section, and terminal is located at floor
Top edge, according to the hand of spiral of origin-to-destination, helicla flute is by the first rectangle, right-angled trapezium, the second rectangle, the 3rd square
Shape, the 4th rectangle and the 5th rectangle are constituted.
The median vertical line bottom on floor is provided with rectangular channel.
The floor is specially square, and the length of side is 9.5mm.
A diameter of 0.8mm of the grounding probe.
Also include two differential feed ports, respectively positioned at the left and right two ends of antenna radiation unit, apart from aerial radiation list
First top is 3.3mm, and the left and right edges distance apart from antenna radiation unit is 1.25mm.
Also include biocompatible material aluminum oxide film.
The beneficial effects of the utility model：
The utility model increases the diminution of antenna radiation unit current path using fractal technology and floor helical slot
Antenna size, while being also beneficial to realize the small-sized of antenna using the use of plane inverse-F structure, the medium substrate of high-k
Change；
The use of differential feed technology enable antenna preferably with implantable medical devices in RF IC
It is connected, and then is conducive to the reduction of embedded system power consumption and the diminution of volume；
By opening rectangular channel in the middle of portion under floor so that antenna is formed about two resonance frequencies so as to expand in ISM band
The bandwidth of antenna is opened up, has been conducive to strengthening the robustness of antenna, to adapt to different human body environments.
Using biocompatible material come isolated antennas and biological tissue, it is to avoid human body produces rejection and work to antenna
Corrosion of the property biological tissue to antenna.
Brief description of the drawings
Fig. 1 is a kind of difference Dual-frequency wide-band antenna radiation being applied in implantable medical devices of the utility model embodiment
The structure and Parameter Map of unit；
Fig. 2 is a kind of difference Dual-frequency wide-band antenna ground being applied in implantable medical devices of the utility model the present embodiment
The structure and Parameter Map of plate；
Fig. 3 is a kind of ginseng of the difference Dual-frequency wide-band antenna being applied in implantable medical devices of the utility model embodiment
Number figure；
Fig. 4 is a kind of reflectance difference of the difference Dual-frequency wide-band antenna being applied in implantable medical devices of the utility model
Coefficient figure.
Specific embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but reality of the present utility model
Apply mode not limited to this.
Embodiment
As shown in Figure 1-Figure 3, a kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices, it is adaptable to be implanted into
To the skin layer of human body, including antenna radiation unit, grounding probe 2A-2B, floor 3 and medium substrate 4, the aerial radiation list
Unit is located at the lower surface of medium substrate positioned at the upper surface of medium substrate 4, floor, and the grounding probe is specially two, symmetrically
It is used to connect antenna radiation unit and floor, and the median vertical line pair on antenna radiation unit installed in antenna radiation unit
Claim, lower end of the antenna radiation unit or so is provided with two differential feed ports 5,6, for feed-in differential signal, apart from day
Beta radiation unit top is 3.3mm, and the left and right edges distance apart from antenna radiation unit is 1.25mm.
Biocompatible material aluminum oxide film is also wrapped in outside the antenna, the aluminum oxide film covers whole antenna
Surface, thickness is 0.1mm, and whole antenna is implanted into the skin layer of human body.
The antenna radiation unit by two deformation hibert curve 1A-1B constitute, on medium substrate it is vertical in
Line is symmetrical, and the structure of the hibert curves of two deformations is identical, specifically by single order Martin Hilb that Length x Width is different
Special fractal curve carries out contracting and stretches rotary splicing composition, and its splicing angle is 90 degree.
Specific size in the present embodiment is as follows：
W1=0.7mm, w2=0.5mm, w3=0.8mm, w4=0.4mm, w5=1mm, w6=0.4mm, w7=0.3mm,
L1=3mm, l3=3.1mm, l4=1.6mm, l5=1.8mm, l6=0.6mm, l7=3mm, l8=4.6mm, l9=2.8mm,
L10=0.4mm
As shown in Fig. 2 being provided with two helicla flutes on the floor, two helicla flutes are symmetrical on floor perpendicular center line, institute
The structure for stating two helicla flutes is identical, and the starting point of helicla flute is located at the lower section of floor transversal centerline, and its terminal is located at the upper of floor
Edge, according to the hand of spiral of origin-to-destination, helicla flute is by the first rectangle, right-angled trapezium, the second rectangle, the 3rd rectangle,
Four rectangles and the 5th rectangle are sequentially connected composition.
The median vertical line the latter half on floor is provided with rectangular channel.
The specific size used in the present embodiment for：
Wg1=1mm, wg2=0.6mm, wg3=0.4mm, wg4=0.5mm, wg5=1.4mm, lg1=4.1mm, lg2=
3.4mm, lg3=5.2mm, lg4=2.35mm, lg5=2.25mm, lg6=1mm, lg7=3mm.Distinguish lg7 by opening length and width
The resonance point for closing on can be constructed near ISM band with the bandwidth of broadening antenna with the rectangular channel of wg5.
The medium substrate 4 is foursquare Rogers RO3210 medium substrates, and its length of side L is 9.5mm, and thickness h is
0.635mm, relative dielectric constant εrIt is 10.2, losstangenttanδ is 0.003.
The diameter d of the grounding probe 2A-2B is 0.8mm, and grounding probe is respectively ld1 and is with the distance of antenna edge
3.3mm, ld2 are 1.25mm.
The biocompatible material film is aluminum oxide, its relative dielectric constant εrIt is 9.2, losstangenttanδ is
0.008。
The floor is specially square, and the length of side is 9.5mm.
As shown in figure 4, antenna is respectively 89MHz (331-420MHz, 22.1%) in the bandwidth of MICS frequency ranges and ISM band
With 1.34GHz (2.10-3.44GHz, 54.9%).
The working environment of the antenna is to be implanted in the skin layer of human body, and its implantation depth dp1 is 3mm, and antenna exists
Global radiation efficiency and gain at 403MHz are respectively -35.04dB and -32.24dBi, the global radiation efficiency 2.44GHz at
Gain is respectively -28.39dB and -21.63dBi.
The utility model antenna is suitably applied implanted doctor in MICS frequency ranges and ISM band antenna pattern towards external
In treating the communication of apparatus and external device, and in MICS and ISM band realize relatively low specific absorption rate respectively.
The characteristics of antenna has miniaturization.Using fractal structure, spiral slot is driven on floor, and high-k substrate is put down
The technologies such as face inverted f structure realize the miniaturization of antenna.Can by enabling that antenna is preferably connected using differential feed technology
The RF IC of implantable medical device.By opening the bandwidth of rectangular channel broadening antenna in the middle of portion under floor, day is realized
The double-frequency broadband characteristic of line.Using biocompatible material come isolated antennas and biological tissue, it is to avoid human body produces repulsion to antenna
The corrosion of reaction and human body environment to antenna.It is possible to being applied to implantable medical devices.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by described
The limitation of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.
Claims (9)
1. a kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices, is implanted to the skin layer of human body, its feature
It is, including antenna radiation unit, grounding probe, floor and medium substrate, the antenna radiation unit is positioned at medium substrate
Upper surface, floor is located at the lower surface of medium substrate, and the grounding probe is specially two, is symmetrically mounted on medium substrate,
And it is symmetrical on antenna radiation unit median vertical line, the antenna radiation unit is made up of the hibert curve of two deformations,
And it is symmetrical on medium substrate median vertical line.
2. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that the Martin Hilb Tequs of two deformations
The structure of line is identical, specifically carries out contracting by the different single order Hilbert fractal curve of Length x Width and stretch rotary splicing to constitute,
Its splicing angle is 90 degree.
3. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that the floor is provided with two helicla flutes,
Described two helicla flutes are symmetrical on floor perpendicular center line.
4. difference Dual-frequency wide-band antenna according to claim 3, it is characterised in that two helical groove structures are identical, described
The starting point of helicla flute is located at floor transversal centerline lower section, and terminal is located at the top edge on floor, according to the spiral side of origin-to-destination
To helicla flute is made up of the first rectangle, right-angled trapezium, the second rectangle, the 3rd rectangle, the 4th rectangle and the 5th rectangle.
5. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that the median vertical line bottom on floor is provided with square
Shape groove.
6. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that the floor is specially square, side
A length of 9.5mm.
7. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that the grounding probe it is a diameter of
0.8mm。
8. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that also including two differential feed ports,
It is 3.3mm apart from antenna radiation unit top, apart from antenna radiation unit respectively positioned at the left and right two ends of antenna radiation unit
Left and right edges distance is 1.25mm.
9. difference Dual-frequency wide-band antenna according to claim 1, it is characterised in that also including biocompatible material aluminum oxide
Film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403208.9U CN206271874U (en) | 2016-12-20 | 2016-12-20 | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621403208.9U CN206271874U (en) | 2016-12-20 | 2016-12-20 | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206271874U true CN206271874U (en) | 2017-06-20 |
Family
ID=59046432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621403208.9U Expired - Fee Related CN206271874U (en) | 2016-12-20 | 2016-12-20 | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505313A (en) * | 2016-12-20 | 2017-03-15 | 华南理工大学 | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices |
| CN109286075A (en) * | 2017-12-06 | 2019-01-29 | 上海交通大学 | The planar inverted F-shape antenna of differential feed |
| CN110212293A (en) * | 2019-05-31 | 2019-09-06 | 天津理工大学 | A kind of miniature implanted planar inverted-F antenna for medical treatment transducer |
-
2016
- 2016-12-20 CN CN201621403208.9U patent/CN206271874U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505313A (en) * | 2016-12-20 | 2017-03-15 | 华南理工大学 | A kind of difference Dual-frequency wide-band antenna being applied in implantable medical devices |
| CN106505313B (en) * | 2016-12-20 | 2023-07-18 | 华南理工大学 | Differential dual-frequency broadband antenna applied to implantable medical device |
| CN109286075A (en) * | 2017-12-06 | 2019-01-29 | 上海交通大学 | The planar inverted F-shape antenna of differential feed |
| CN110212293A (en) * | 2019-05-31 | 2019-09-06 | 天津理工大学 | A kind of miniature implanted planar inverted-F antenna for medical treatment transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20191220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |