CN207217774U - A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry - Google Patents
A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry Download PDFInfo
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- CN207217774U CN207217774U CN201721171186.2U CN201721171186U CN207217774U CN 207217774 U CN207217774 U CN 207217774U CN 201721171186 U CN201721171186 U CN 201721171186U CN 207217774 U CN207217774 U CN 207217774U
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- circular polarized
- polarized antenna
- gap
- implanted
- shaped gap
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Abstract
The utility model discloses a kind of implanted circular polarized antenna applied to Wireless Medical Telemetry, formed including antenna radiation unit, metal floor, upper and lower layer medium substrate and feed element, the antenna radiation unit is printed between upper and lower layer medium substrate, the metal floor is located at the lower surface of layer dielectric substrate, and the antenna radiation unit includes triangular structure, ARROW structure and gap structure.The utility model implanted circular polarized antenna has miniaturization, and high-gain is anti-interference, the feature such as bio-compatible.
Description
Technical field
It the utility model is related to biomedical telemetry field, and in particular to a kind of implanted applied to Wireless Medical Telemetry
Circular polarized antenna.
Background technology
With aging population and the increase of operating pressure, people are increasingly paid close attention to health and medical treatment and nursing, unique
The Medical Devices that convenience to be implanted into human body have obtained extensive research.Implanted antenna senses as implantating biological medical science
Device carries out the Primary Component of radio communication with external device, and its performance will influence the message transmission capability of whole system.Plant
It is different from common communications antenna to enter formula antenna.Because antenna needs to be implanted to inside of human body, and human body is by multilayer different qualities (shape
Shape is different, electromagnetic property is different) be made up of consumption tissue mediators (skin, fat, muscle), and these dielectric constants for organizing
It is as frequency changes with electrical conductivity, these constitute complicated particular job environment of implanted antenna, the performance of antenna
Influenceed by tissue it is bigger, so miniaturization, wideband, bio-compatibility, security, anti-interference energy to antenna
The antenna performance such as power and low-power consumption proposes lot of challenges.
Due to human motion, implanted antenna is kept at an angle with external reception antenna and distance is unrealistic
's；And due to indoor complicated background environment, there can be multiple scattering.Due to circular polarized antenna have suppress multi-path jamming and
The characteristic such as unrelated with angle, so we design implanted circular polarized antenna.
Utility model content
The shortcomings that in order to overcome prior art to exist deficiency, the utility model provides a kind of applied to Wireless Medical Telemetry
Miniaturization, the implanted circular polarized antenna of anti-polarization mismatch.
The utility model adopts the following technical scheme that：
A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry, it is characterised in that including antenna radiation unit,
Metal floor, upper and lower layer medium substrate and feed element are formed, and the antenna radiation unit is printed on upper and lower layer medium substrate
Between, the metal floor is located at the lower surface of layer dielectric substrate, and the antenna radiation unit includes two triangular structures
And two ARROW structures, described two triangular structures are printed on the longitudinal midline both sides of layer dielectric substrate, two triangles
Structure is identical, and composition is superimposed with high impedance line by isosceles triangle, and, described two ARROW structures symmetrical on longitudinal midline
The transversal centerline both sides of layer dielectric substrate are printed on, and it is symmetrical on transversal centerline.
Also include gap structure, the gap structure loads along around ARROW structure, and the gap structure includes triangle
Shape gap and two L-shaped gaps, described two L-shaped gaps are respectively first and second L-shaped gap, by short side and long side structure
Into, first and second L-shaped gap short side respectively with triangular slits vertical connection.
The width of first and second L-shaped gap long side is different.
The width of the high impedance line is 1.1mm, a height of 2.5mm of the isosceles triangle, bottom side length 4.2mm.
The width of first L-shaped gap long side is 0.6mm, and the width of the second L-shaped gap long side is 0.4mm.
The short side in first and second L-shaped gap is specifically connected with the base vertical of triangular slits, and is loaded respectively
The both sides of rectangle in ARROW structure.
The beneficial effects of the utility model：
(1) antenna introduces Slow-wave effect by loading two ARROW structures and two isosceles triangles in radiation patch,
So as to reduce the size of antenna；
(2) gap that antenna is not waited by loading width on the both sides of ARROW structure so that basic mode of resonance separation
For two spaces are orthogonal, phase differs 90 degree of two orthogonal modes, circular polarization radiation characteristic is formd.
(3) the utility model implanted circular polarized antenna has miniaturization, and high-gain is anti-interference, the feature such as bio-compatible.
Brief description of the drawings
Fig. 1 is a kind of top view of implanted circular polarized antenna applied to Wireless Medical Telemetry of the present utility model；
Fig. 2 is Fig. 1 side view；
Fig. 3 is Fig. 1 parameter schematic diagram；
Fig. 4 is that reflectance factor and axle of the utility model on three layers of tissue phantom compare analogous diagram；
Fig. 5 is the utility model gain pattern on three layers of tissue phantom when centre frequency is 2.45GHz.
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 depicted in figs. 1 and 2, a kind of implanted circular polarized antenna applied to Wireless Medical Telemetry, including aerial radiation
Unit 2, metal floor 3, medium substrate 1 and feed element 4 are formed, and the medium substrate is made up of levels medium substrate, institute
State antenna radiation unit 2 to be printed between upper and lower layer medium substrate, the metal floor is located at the following table of layer dielectric substrate
Face, the feed element are made up of 50 Ω coaxial cable, and the coaxial cable inner core radius is 0.3mm.
The antenna radiation unit includes two triangular structures and two ARROW structures, layer dielectric substrate longitudinal midline
Both sides printing triangular structure 7A, 7B, two triangular structures are identical and symmetrical on longitudinal midline, by isoceles triangle
Shape is superimposed composition with high impedance line, and the summit of triangular structure is towards the midpoint direction of antenna radiation unit.
Both sides printing ARROW structure 6A, 6B of the layer dielectric substrate transversal centerline, and, institute symmetrical on transversal centerline
Stating ARROW structure includes triangle and rectangle, the base of the rectangular vertical triangle, the top of the triangle of two ARROW structures
Put towards the midpoint of antenna radiation unit.
Antenna radiation unit also includes gap structure, and the gap structure is arranged on the both sides of transversal centerline, including triangle
Shape gap 8 and two L-shaped gaps, the triangular slits load along around the triangle of ARROW structure, described two L-shaped seams
Gap is respectively first and second L-shaped gap, is formed by orthogonal short side and long side, the short side difference in described two gaps
It is connected with the base vertical of triangular slits, and is carried in the rectangle both sides of ARROW structure respectively, the triangular slits are etc.
Lumbar triangle shape.Long side 5A, the 5B width in described two L-shaped gaps is different, in the opposite direction.
A height of 0.6mm of the isosceles triangle, a length of 1.74mm in base.The length of the high impedance line is 1.5mm, wide
Spend for 0.2mm.Described two isosceles triangular structure 7A, 7B are connected on paster each via high impedance line.The high impedance line
Width be 1.1mm.A height of 2.5mm of the isosceles triangle, a length of 4.2mm in base.The gap that two pairs of width do not wait
5A, 5B are each carried in the both sides of ARROW structure, and width is respectively 0.4mm and 0.6mm, forms perturbation unit, realizes circular polarisation.
As shown in figure 3, the size of the antenna element is：L=9mm, L1=2.1mm, L2=4.6mm, L3=1.5mm,
L4=2.1mm, L5=1.74mm, d=3.9mm, W1=1.1mm, W2=1.2mm, W3=2.5mm, W4=2.1mm, W5=
0.9mm, S1=0.4mm, S2=0.6mm, H1=1.3mm, H2=0.9mm.
The two layer medium substrate is all to use high dielectric constant material RO3010, and its relative dielectric constant is 10.2, electricity
Loss angle tangent is 0.0035, and the length of side of the two layer medium substrate is 9.6mm, and thickness is all 0.635mm.
As shown in Figure 4 and Figure 5, the utility model uses loads two ARROW structures, two isosceles three on square patch
Angular structure, Slow-wave effect is introduced, so as to realize miniaturization.The gap do not waited by loading width on the both sides of ARROW structure,
So that basic mode of resonance is separated into, two spaces are orthogonal, phase differs 90 degree of two orthogonal modes, form circular polarisation
Radiation characteristic.The utility model covers industry, science and Medical band (ISM band：2.42-2.48GHz), implanted day is made
Line has relatively good circular polarization characteristics when being operated in this frequency range, can suppress multi-path jamming, reduces bit error rate, suppresses
Polarization mismatch.
The circular polarized antenna of the utility model design, which has, to be minimized, low section, high-gain, the feature such as anti-interference.
Above-described embodiment is the preferable embodiment of the utility model, but embodiment of the present utility model is not by described
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplify, should be equivalent substitute mode, be included within the scope of protection of the utility model.
Claims (6)
1. a kind of implanted circular polarized antenna applied to Wireless Medical Telemetry, it is characterised in that including antenna radiation unit, gold
Possession plate, upper and lower layer medium substrate and feed element are formed, the antenna radiation unit be printed on upper and lower layer medium substrate it
Between, the metal floor is located at the lower surface of layer dielectric substrate, the antenna radiation unit include two triangular structures and
Two ARROW structures, described two triangular structures are printed on the longitudinal midline both sides of layer dielectric substrate, two triangle knots
Structure is identical, and composition is superimposed with high impedance line by isosceles triangle, and symmetrical on longitudinal midline, described two ARROW structure prints
System is and symmetrical on transversal centerline in the transversal centerline both sides of layer dielectric substrate.
2. implanted circular polarized antenna according to claim 1, it is characterised in that also including gap structure, the gap
Structure loads along around ARROW structure, and the gap structure includes triangular slits and two L-shaped gaps, described two L-shaped
Gap is respectively first and second L-shaped gap, is formed by short side and long side, the short side point in first and second L-shaped gap
Not with triangular slits vertical connection.
3. implanted circular polarized antenna according to claim 2, it is characterised in that first and second L-shaped gap length
The width on side is different.
4. implanted circular polarized antenna according to claim 1, it is characterised in that the width of the high impedance line is
1.1mm, a height of 2.5mm of the isosceles triangle, bottom side length 4.2mm.
5. implanted circular polarized antenna according to claim 2, it is characterised in that the width of the first L-shaped gap long side is
0.6mm, the width of the second L-shaped gap long side is 0.4mm.
6. implanted circular polarized antenna according to claim 2, it is characterised in that first and second L-shaped gap
Short side is specifically connected with the base vertical of triangular slits, and is carried in the both sides of rectangle in ARROW structure respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171186.2U CN207217774U (en) | 2017-09-13 | 2017-09-13 | A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171186.2U CN207217774U (en) | 2017-09-13 | 2017-09-13 | A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207217774U true CN207217774U (en) | 2018-04-10 |
Family
ID=61824716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171186.2U Expired - Fee Related CN207217774U (en) | 2017-09-13 | 2017-09-13 | A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207217774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732442A (en) * | 2017-09-13 | 2018-02-23 | 华南理工大学 | A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry |
-
2017
- 2017-09-13 CN CN201721171186.2U patent/CN207217774U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732442A (en) * | 2017-09-13 | 2018-02-23 | 华南理工大学 | A kind of implanted circular polarized antenna applied to Wireless Medical Telemetry |
| CN107732442B (en) * | 2017-09-13 | 2023-11-17 | 华南理工大学 | Implantable circularly polarized antenna applied to wireless medical telemetry |
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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: 20180410 Termination date: 20190913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |