CN207504163U - A kind of capsule antenna - Google Patents
A kind of capsule antenna Download PDFInfo
- Publication number
- CN207504163U CN207504163U CN201721712170.8U CN201721712170U CN207504163U CN 207504163 U CN207504163 U CN 207504163U CN 201721712170 U CN201721712170 U CN 201721712170U CN 207504163 U CN207504163 U CN 207504163U
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- Prior art keywords
- metal
- dielectric plate
- metal band
- band
- shell
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Abstract
The utility model discloses a kind of capsule antenna, including upper and lower medium plate, metal column, metal cap, polyimides shell, metal band and feed metal probe；Metal column insertion upper and lower medium plate center, metal cap are set on the top surface of top dielectric plate, and layer dielectric plate bottom surface is covered with annular metallic layer；Polyimides shell has biocompatibility, and outside is in direct contact with tissue；Metal band is tightly attached to outer casing inner wall, forms external metal ring with the annular metallic layer of layer dielectric plate bottom surface, a slot antenna configurations are formed between the becket and metal column, metal cap.Carrier of the metal column as battery, influence of the maskable battery to antenna performance.The electronic component of wireless endoscope system is set in metal cap, equally avoids the influence to antenna radiation performance.Feed port is located at metal cap top, and one end is connect with metal cap, and the other end is connect with the metal band of polyimides enclosure, so as to encourage the slot antenna of a half-wavelength resonance.
Description
Technical field
The utility model belongs to antenna technical field, and in particular to a kind of capsule antenna, suitable for wireless endoscope system,
Available for medical monitoring technical field.
Background technology
Traditional endoscopic system is non-wireless means, is connected by flexible cable and passes through oral cavity and stretch into inside of human body, given
Medical monitoring, imaging and diagnosis etc. bring great inconvenience.Recent years, some researchers propose all kinds of suitable for nothing
The capsule antenna of line endoscopic system.
2009, Phillip M.Izdebski, Harish Rajagopalan and Yahya Rahmat-Samii existed
" Conformal Ingestible are delivered on IEEE Transactions on Antennas and Propagation periodicals
Capsule Antenna:A Novel Chandelier Meandered Design " propose the sinuous dipole suitable for capsule
Sub-antenna, this antenna mainly improves matching using the feeding classification at deviation structure center, but the bandwidth after improvement is still very narrow,
It is easy to cause frequency shift (FS) in practical applications, causes system performance unstable.2017, Rupam Das and Hyoungsuk
Yoo delivers " A Wideband on IEEE Transactions on Antennas and Propagation periodicals
Circularly Polarized Conformal Endoscopic Antenna System for High-Speed Data
Transfer " proposes the Broadband circularly polarized antenna for capsule, but this capsule system is less than normal for the space that battery is reserved, and works as electricity
Neighbouring antenna performance can be influenced after the increase of pond.In addition, the antenna is not omnidirectional radiation, day is received to outside in practical applications
The placement position requirement of line is excessively high.
Utility model content
In order to solve aerial band width, battery and electronic component in the prior art have an impact to antenna performance and not
The technical problems such as omnidirectional radiation, the utility model proposes a kind of capsule antennas, have the characteristics that performance stabilization, pass through structural radiation
Battery, electronic component in practical application is placed in inside metal cap and metal column, so as to shield by the integrated design of unit
The negative effect that they bring antenna performance.
It realizes above-mentioned technical purpose, reaches above-mentioned technique effect, the utility model is achieved through the following technical solutions：
A kind of capsule antenna, including shell, top dielectric plate, layer dielectric plate, metal cap, metal in shell
Column, metal band and feed metal probe；
The top dielectric plate and layer dielectric plate are oppositely arranged, and the two corresponding position is equipped with through hole；Under described
The side far from top dielectric plate is equipped with annular metallic layer on layer dielectric-slab；
The metal column is embedded in the through hole on top dielectric plate and layer dielectric plate, top and the circle of metal cap
Shape bottom surface is electrically connected, and bottom is electrically connected with the annular metallic layer of layer dielectric plate bottom surface；
The metal band is attached on the inner wall of shell, and both ends are electrically connected respectively with the annular metallic layer, is formed
Gap structure is collectively formed with metal column and metal cap in becket, the becket；
One end of the feed metal probe is electrically connected with metal cap, and the other end is electrically connected with metal band.
Further, the shell is in capsule-type, and the top dielectric plate and layer dielectric plate are located at respectively two in shell
The junction of side hemisphere and cylinder.
Further, the metal band includes the first metal band, the second metal band and third metal band；
First metal band is attached on the inner wall of cover top portion；
Second metal band and third metal band are attached on the inner wall of shell side, the top difference of the two
It is electrically connected with the both ends of the first metal strip, bottom end is electrically connected respectively with the annular metallic layer；
The width of first metal band is more than the second metal band and third metal band；
Second metal band is identical with the structure snd size of third metal band.
Further, second metal band and third metal band are set by axial symmetry of the central axes of shell.
Further, one end of the feed metal probe is electrically connected with the top of metal cap, the other end and the first metal
The middle part electrical connection of band.
Further, the outer diameter of the metal cap is equal with the outer diameter of metal column.
Further, the metal column is any one of rectangular-shape, cylindrical shape, Elliptic Cylinder shape or sphere shape.
Further, the metal cap be rectangular-shape, cylindrical shape, Elliptic Cylinder shape or hemisphere shape any or
Part in any.
Further, the relative dielectric constant of the top dielectric plate and layer dielectric plate is 1-10.2；Thickness is 0.2-
5.0mm。
Further, the shell is made of polyimides.
Compared with prior art, the beneficial effects of the utility model：
1st, capsule antenna provided by the utility model has the characteristics that performance stabilization, by structure (i.e. internal is battery,
Outside is the physical arrangement of shell), the integrated design of radiating element (antenna structure), by battery, the electronics in practical application
Component is placed in inside metal column and metal cap, so as to shield the negative effect that they bring antenna performance；
2nd, capsule antenna provided by the utility model has impedance matching good, realizes broadband effects, cover medical
WMTS (Wireless Medical Telemetry Service, 1.4GHz) frequency range, suitable for the doctor of following wireless endoscope
Treat diagnosis detection system；
3rd, capsule antenna provided by the utility model is effectively utilized whole radiating apertures of capsule, increases radiation effect
Rate improves antenna gain；
4th, capsule antenna provided by the utility model has the omnidirectional radiation directional diagram in broadband range, due to capsule antenna
The uncertainty of position in enteron aisle, this characteristic help to maintain the stabilized communication of capsule antenna and external antenna.
Description of the drawings
Fig. 1 be the utility model proposes capsule antenna structure diagram；
Fig. 2 be the utility model proposes capsule antenna x directions view；
Fig. 3 be the utility model proposes capsule antenna y directions view；
Fig. 4 be the utility model proposes capsule antenna z directions view；
Fig. 5 be the utility model proposes capsule antenna embodiment 2 size marking schematic diagram；
Fig. 6 is the analogous diagram of the S parameter of capsule antenna provided by the utility model；
Fig. 7 is the gain 3D analogous diagrams of two frequency ranges of capsule antenna provided by the utility model；
Fig. 8 be capsule antenna provided by the utility model in the broad frequency range of covering, xoy planes φ=0 °, 90 °,
The gain schematic diagram of 180 °, 270 ° four angles.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain this practicality
It is novel, it is not used to limit the utility model.
The application principle of the utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in Figs 1-4, a kind of capsule antenna, including shell 8, the top dielectric plate 1 in shell 8, layer dielectric
Plate 2, metal cap 5, metal column 3, the first metal band 6, the second metal band 7, third metal band 7 and feed metal probe 9；
The shell 8 is in capsule-type, it is preferred to use the polyimides for having biocompatibility is made, for maintaining in capsule
Portion's structure is isolated with external tissue, simultaneously because the characteristics of its biocompatibility, outside can directly connect with tissue
It touches；
The top dielectric plate 1 and layer dielectric plate 2 are oppositely arranged, and are preferably placed at 8 both sides hemisphere of capsule shell and circle
Entire capsule structure is played the middle part correspondence of certain supporting role, top dielectric plate 1 and layer dielectric plate 2 in the junction of cylinder
Through hole is equipped at position；
The top and bottom of the top dielectric plate 1 are covered without metal；It is covered without metal the top surface of the layer dielectric plate 2
Lid, bottom surface is covered with annular metallic layer 4；In the present embodiment, the opposite dielectric of the top dielectric plate 1 and layer dielectric plate 2
Constant is 3.66, and thickness is 0.508mm；
The metal column 3 is embedded in the through hole on top dielectric plate 1 and layer dielectric plate 2, top and metal cap 5
Rounded bottom surface electrical contact, the annular metallic layer 4 of bottom and 2 bottom surface of layer dielectric plate is in electrical contact, i.e., with annular metallic layer 4
Madial wall keeps electrical contact, as the carrier of wineless endoscope capsule system battery, can effectively shield battery to antenna performance
It influences；Carrier of the metal cap 5 as electronic component, equally can effectively shield shadow of the electronic component to antenna performance
It rings；The metal column 3 is any one of rectangular-shape, cylindrical shape, Elliptic Cylinder shape or sphere shape；The metal cap 5 can
Think rectangular-shape, cylindrical shape, Elliptic Cylinder shape or sphere shape it is any or any in a part；
On the inner wall at top that first metal band 6 is close to capsule shell 8；Second metal band 7 and third
Metal band 7 is attached on the inner wall of 8 side of shell, and the both ends of the top of the two respectively with the first metal strip are electrically connected, bottom
End is electrically connected respectively with the annular metallic layer 4；The width of first metal band 6 is more than the second metal band 7 and third
Metal band 7；Second metal band 7 is identical with the structure snd size of third metal band 7；Preferably, second gold medal
Belong to band 7 and third metal band 7 to set by axial symmetry of the central axes of shell 8, first metal band 6, the second metal
Gap structure is collectively formed in band 7, third metal band 7, annular metallic layer 4 and metal column 3 and metal cap 5；
One end of the feed metal probe 9 is electrically connected with 5 top of metal cap, in the other end and the first metal band 6
Portion is electrically connected.
Embodiment 2
As shown in figure 5, the length L=26mm of capsule antenna, the column part of shell and the internal diameter Ri of upper and lower hemispheres part
=5.44mm, outer diameter Ro=5.5mm, outer casing thickness t=0.06mm, entire external dimensions 26mm (length) × 11mm (diameter) are
The size of normal capsule.The length Lg=16mm of interior metal column 3, radius Rg=4.5mm.5 radius Rh=4.5mm of metal cap.
Metal column 3 is with the spacing and metal cap 5 of the second metal band of both sides 7 and third metal band 7 with being located at the first of cover top portion
The spacing of metal band 6 is all s=0.94mm.First metal band width wt=2mm, the second metal band 7 and third metal
The width w=0.6mm of band 7.
As shown in fig. 6, when capsule antenna is placed in tissue, muscle of such as size for 60mm × 60mm × 60mm
In tissue, the 0.944 ultra-wide working frequency range for arriving 2.004GHz, absolute bandwidth 1.06GHz, relative bandwidth 71.9% can be covered
(2.12 frequency multiplication) even if antenna is placed in different tissues, in the case that occurrence frequency deviates, still ensures that 1.4GHz's
Effective covering of WMTS frequency ranges.
As shown in fig. 7, capsule antenna keeps the omnidirectional radiation of xoy planes in the broad frequency range of covering.In addition, as schemed
Shown in 8, capsule antenna is in the broad frequency range of covering, xoy planes φ=0 °, 90 °, 180 °, 270 ° of four angles keep
Good gain.Therefore capsule antenna position in enteron aisle do not know and remain in the case that occurrence frequency deviates to keep with it is outer
The good communication of portion's antenna is highly suitable for following wireless capsule endoscope system.
In summary：
The utility model discloses a kind of capsule antenna, suitable for wireless endoscope system, including upper and lower medium plate, metal
Column, metal cap, polyimides shell, metal band and feed metal probe；The upper and lower medium of the intermediate hollow out of metal column insertion
Plate center, metal cap are set on the top surface of top dielectric plate, and layer dielectric plate bottom surface is covered with annular metallic layer；Polyimides shell
Has biocompatibility, outside is in direct contact with tissue；Metal band is tightly attached on the inner wall of shell, with layer dielectric plate
The annular metallic layer of bottom surface forms external metal ring, and a slot antenna knot is formed between the becket and metal column and metal cap
Structure.Carrier of the metal column as battery can effectively shield influence of the battery to antenna performance.The electricity of wireless endoscope system
Sub- component is set on inside metal cap, equally avoids the influence to antenna radiation performance.Feed port is located at metal cap top,
One end is connect with metal cap, and the other end is connect with the metal band of polyimides enclosure, so as to effectively encourage one and half
The slot antenna of wave resonance.In addition, the capsule Antenna Impedance Matching of the utility model is good, good broadband and complete is realized
The omnidirectional radiation performance of frequency range.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of capsule antenna, it is characterised in that：Including shell, top dielectric plate, layer dielectric plate, metal in shell
Cover, metal column, metal band and feed metal probe；
The top dielectric plate and layer dielectric plate are oppositely arranged, and the two corresponding position is equipped with through hole；The lower floor is situated between
Side far from top dielectric plate on scutum is equipped with annular metallic layer；
The metal column is embedded in the through hole on top dielectric plate and layer dielectric plate, top and the circular base of metal cap
Face is electrically connected, and bottom is electrically connected with the annular metallic layer of layer dielectric plate bottom surface；
The metal band is attached on the inner wall of shell, and both ends are electrically connected respectively with the annular metallic layer, forms metal
Gap structure is collectively formed with metal column and metal cap in ring, the becket；
One end of the feed metal probe is electrically connected with metal cap, and the other end is electrically connected with metal band.
2. a kind of capsule antenna according to claim 1, it is characterised in that：The shell is in capsule-type, and the upper strata is situated between
Scutum and layer dielectric plate are located at the junction of both sides hemisphere and cylinder in shell respectively.
3. a kind of capsule antenna according to claim 1 or 2, it is characterised in that：The metal band includes the first metal
Band, the second metal band and third metal band；
First metal band is attached on the inner wall of cover top portion；
Second metal band and third metal band are attached on the inner wall of shell side, and the top of the two is respectively with
The both ends electrical connection of one metal strip, bottom end is electrically connected respectively with the annular metallic layer；
The width of first metal band is more than the second metal band and third metal band；
Second metal band is identical with the structure snd size of third metal band.
4. a kind of capsule antenna according to claim 3, it is characterised in that：Second metal band and third metal strip
Band is set by axial symmetry of the central axes of shell.
5. a kind of capsule antenna according to claim 3, it is characterised in that：One end of the feed metal probe and metal
The top electrical connection of cover, the other end are electrically connected with the middle part of the first metal band.
6. a kind of capsule antenna according to claim 1, it is characterised in that：The outer diameter of the metal cap and metal column it is outer
Diameter is equal.
7. a kind of capsule antenna according to claim 1, it is characterised in that：The metal column is rectangular-shape, cylinder
Any one of shape, Elliptic Cylinder shape or sphere shape.
8. a kind of capsule antenna according to claim 1, it is characterised in that：The metal cap is rectangular-shape, cylinder
Shape, Elliptic Cylinder shape or hemisphere shape it is any or any in a part.
9. a kind of capsule antenna according to claim 1, it is characterised in that：The top dielectric plate and layer dielectric plate
Relative dielectric constant is 1-10.2；Thickness is 0.2-5.0mm.
10. a kind of capsule antenna according to claim 1, it is characterised in that：The shell is made of polyimides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712170.8U CN207504163U (en) | 2017-12-11 | 2017-12-11 | A kind of capsule antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712170.8U CN207504163U (en) | 2017-12-11 | 2017-12-11 | A kind of capsule antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207504163U true CN207504163U (en) | 2018-06-15 |
Family
ID=62508666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721712170.8U Expired - Fee Related CN207504163U (en) | 2017-12-11 | 2017-12-11 | A kind of capsule antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207504163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919524A (en) * | 2017-12-11 | 2018-04-17 | 南京信息工程大学 | A kind of capsule antenna |
-
2017
- 2017-12-11 CN CN201721712170.8U patent/CN207504163U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919524A (en) * | 2017-12-11 | 2018-04-17 | 南京信息工程大学 | A kind of capsule antenna |
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| 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: 20180615 Termination date: 20191211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |