CN206271883U - A kind of circularly-polarized patch antenna for medical treatment detection - Google Patents
A kind of circularly-polarized patch antenna for medical treatment detection Download PDFInfo
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- CN206271883U CN206271883U CN201621364525.4U CN201621364525U CN206271883U CN 206271883 U CN206271883 U CN 206271883U CN 201621364525 U CN201621364525 U CN 201621364525U CN 206271883 U CN206271883 U CN 206271883U
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- patch
- circularly
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- polarized
- antenna
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Abstract
The utility model embodiment discloses a kind of circularly-polarized patch antenna for medical treatment detection, and more complicated for solving existing circularly-polarized patch antenna structure, integrated difficulty is big, high cost, and volume is big and does not possess the technical problem of directionality.A kind of circularly-polarized patch antenna for medical treatment detection of the utility model embodiment includes：Ellipse patch, microstrip feed line, single-layer double-side pcb board, grooving floor；Wherein described microstrip feed line is protruded and is connected at the ellipse patch periphery；The grooving floor includes the oval groove, the rectangular patch that hollow out；The rectangular patch is recessed in the oval groove；The oval groove constitutes capacitive load with the circumferential weld that the ellipse patch is formed；The ellipse patch and the rectangular patch coupling short constitute inductance loading.
Description
Technical field
The utility model is related to antenna and microwave regime, more particularly to a kind of circularly-polarized patch day for medical treatment detection
Line.
Background technology
With the development of modern communication technology, simple linear polarization is difficult to meet communicating requirement.Circular polarized antenna has can
The incoming wave of any polarization mode is received, and its radiated wave can also be received by the antenna of any polarization mode, there is rotation direction orthogonality, energy
The advantages of enough suppression sexual intercourse interference and anti-multipath reflect.
Micro-strip circular polarized antenna is due to combining microstrip antenna and advantage and characteristic both circular polarized antenna therefore wide
It is general to be applied to wireless application, such as：It is the satellite communications such as measurement, communication, satellite, space flight, global positioning system and rfid system, distant
Control, the development of telemetry.
The micro-strip circular polarized antenna that can be formed in communication, TT＆C system at present mainly has following several structure types,
Though respectively there is feature in performance, there is certain not enough.
1st, coaxial feed circular polarization microstrip antenna, this is the characteristics of form antenna has impedance, axial ratio bandwidth is wide, but circuit board
Integrated difficulty is larger, is unfavorable for installing.
2nd, corner cut circular polarization microstrip antenna, the form antenna structure is simple, and profile is low, but antenna axial ratio, standing wave bandwidth are small
In 2%.
3rd, the circular polarization microstrip antenna form of external circular polarisation electric bridge, the microstrip antenna axle ratio of the form, standing wave bandwidth compared with
Width, usual its is less than 3dB axial ratio bandwidths more than 15%, and the standing wave band less than 2dB is wider than 20%, but external circular polarisation electric bridge is accounted for
With space it is larger, feeder line is tediously long, differential loss is larger, is unfavorable for antenna, network integration.
4th, realize that circular polarisation is current study hotspot using unilateral feedback technology, but structure is more complicated, and be difficult to realize,
Therefore, simplifying its structure design turns into the key of design.
5th, medical treatment detection device needs antenna volume small, and with directional properties, and most circular polarized antenna does not have
Standby directionality, this is the problem of medical detection field institute urgent need to resolve.
Utility model content
The utility model embodiment discloses a kind of circularly-polarized patch antenna for medical treatment detection, solves existing circle
Polarized patch antenna structure is more complicated, and integrated difficulty is big, high cost, and volume is big and technology that do not possess directionality is asked
Topic.
The utility model embodiment provides a kind of circularly-polarized patch antenna for medical treatment detection, including：
Ellipse patch, microstrip feed line, single-layer double-side pcb board, grooving floor；
The microstrip feed line is protruded and is connected at the ellipse patch periphery；
The grooving floor includes the oval groove, the rectangular patch that hollow out；
The rectangular patch is recessed in the oval groove；
The oval groove constitutes capacitive load with the circumferential weld that the ellipse patch is formed；
The ellipse patch and the rectangular patch coupling short constitute inductance loading.
Preferably,
The working frequency of the circularly-polarized patch antenna is 5.8GHz ISM bands.
Preferably,
The major axis a1 of the ellipse patch be the circularly-polarized patch antenna working frequency corresponding to wavelength 0.3-0.4
Times, the major axis a1 of the ellipse patch and the short axle b1 axles ratio of the ellipse patch are 1.04-1.05.
Preferably,
The single-layer double-side pcb board is FR4_epoxy microwave materials, and relative dielectric constant is 4-5, and tangent loss is 0-
0.05, thickness is 0-2mm, and the thickness of double face copper is 30-40 μm, and length L1 is 30-35mm, and width W1 is 30-50mm.
Preferably,
The input impedance of the microstrip feed line is 50 Ω, and length L2 is 8mm, and width W2 is 1.82mm.
Preferably,
Area of the area of the oval groove more than the ellipse patch.
Preferably,
The major axis a2 of the oval groove is 15-30mm, and short axle b2 is 21-22mm.
Preferably,
The length L3 of the rectangular patch is 10-20mm, and width W3 is 1.6-2.0mm.
Preferably,
The major axis of the oval groove is 40-50 degree with the projection angle of the microstrip feed line；
Preferably,
The major axis of the ellipse patch is 40-50 degree with the angle of the microstrip feed line.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
The utility model embodiment provides a kind of circularly-polarized patch antenna for medical treatment detection, including：Ellipse patch,
Microstrip feed line, single-layer double-side pcb board, grooving floor；Wherein described microstrip feed line is protruded and is connected at the ellipse patch periphery；
The grooving floor includes the oval groove, the rectangular patch that hollow out；The rectangular patch is recessed in the oval groove；The oval groove
Capacitive load is constituted with the circumferential weld that the ellipse patch is formed；The ellipse patch and the rectangular patch coupling short constitute electricity
Sense loading.In the present embodiment, the circular polarisation of antenna, simplification, miniaturization and fixed are realized by way of loading capacitance and inductance
Tropism is designed, and gives full play to advantage and characteristic that both microstrip antenna and circular polarized antenna are combined, and antenna performance is higher, robustness
By force, practicality is high, and low cost, micro- with other circular polarisation using single-point feedback designing antenna, simple structure, it is easy to integrated
Band antenna ratio can form preferable circular polarization radiation effect compared with without external circular polarisation feeding network, additionally, the design is realized
Antenna is designed with network integration, is capable of achieving array antenna design, it is adaptable to it is required that the medical treatment detection device of circular polarized antenna
In, it is more complicated to solve existing circularly-polarized patch antenna structure, and integrated difficulty is big, high cost, and volume is big and does not have
The technical problem of standby directionality.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
One of a kind of circularly-polarized patch antenna device for medical treatment detection provided in Fig. 1 the utility model embodiments
The structural representation of embodiment；
A kind of one kind for the circularly-polarized patch antenna device for medical treatment detection provided in Fig. 2 the utility model embodiments
Ellipse patch structure chart；
A kind of one kind for the circularly-polarized patch antenna device for medical treatment detection provided in Fig. 3 the utility model embodiments
Grooving floor panel structure figure；
A kind of echo of the circularly-polarized patch antenna device for medical treatment detection provided in Fig. 4 the utility model embodiments
Loss figure；
In Fig. 5 the utility model embodiments provide it is a kind of for medical treatment detection circularly-polarized patch antenna device xz and
Gain pattern on yz sections；
A kind of three-dimensional of the circularly-polarized patch antenna device for medical treatment detection provided in Fig. 6 the utility model embodiments
Gain pattern.
Specific embodiment
The utility model embodiment discloses a kind of circularly-polarized patch antenna for medical treatment detection, existing for solving
Circularly-polarized patch antenna structure is more complicated, and integrated difficulty is big, high cost, and volume is big and technology that do not possess directionality is asked
Topic.
Fig. 1 is refer to, a kind of circularly-polarized patch antenna for medical treatment detection provided in the utility model embodiment, bag
Include：
Ellipse patch 1, microstrip feed line 2, single-layer double-side pcb board, grooving floor 4；
The microstrip feed line 2 is protruded and is connected at the periphery of the ellipse patch 1；
The grooving floor 4 includes the oval groove 5, the rectangular patch 6 that hollow out；
The rectangular patch 6 is recessed in the oval groove 5；
The oval groove 5 constitutes capacitive load with the circumferential weld that the ellipse patch 1 is formed；
The ellipse patch 1 and the coupling short of the rectangular patch 6 constitute inductance loading.
Further,
The working frequency of the circularly-polarized patch antenna is 5.8GHz ISM bands.
Further,
The major axis a1 of the ellipse patch 1 be the circularly-polarized patch antenna working frequency corresponding to wavelength 0.3-
0.4 times, the major axis a1 of the ellipse patch 1 and the short axle b1 axles ratio of the ellipse patch 1 are 1.04-1.05.
Further,
The single-layer double-side pcb board is FR4_epoxy microwave materials, and relative dielectric constant is 4-5, and tangent loss is 0-
0.05, thickness is 0-2mm, and the thickness of double face copper is 30-40 μm, and length L1 is 30-35mm, and width W1 is 30-50mm.
Further,
The input impedance of the microstrip feed line 2 is 50 Ω, and length L2 is 8mm, and width W2 is 1.82mm.
Further,
Area of the area of the oval groove 5 more than the ellipse patch.
Further,
The major axis a2 of the oval groove 5 is 15-30mm, and short axle b2 is 21-22mm.
Further,
The length L3 of the rectangular patch 6 is 10-20mm, and width W3 is 1.6-2.0mm.
Further,
The major axis of the oval groove 5 is 40-50 degree with the projection angle of the microstrip feed line 2；
Further,
The major axis of the ellipse patch 1 is 40-50 degree with the angle of the microstrip feed line 2.
Fig. 1 is referred to, a kind of circularly-polarized patch antenna for medical treatment detection provided in the utility model embodiment, bag
Include：
Ellipse patch 1, microstrip feed line 2, rectangle single-layer double-side pcb board 3, grooving floor 4；
The projection of the microstrip feed line 2 is outside the ellipse patch 1, and the microstrip feed line 2 is ellipse with the ellipse patch 1
It is circumferentially attached；
The grooving floor 4 includes the oval groove 5, the rectangular patch 6 that hollow out；
The rectangular patch 6 is recessed in the oval groove 5；
The oval groove 5 constitutes capacitive load with the circumferential weld that the ellipse patch 1 is formed；
The ellipse patch 1 and the coupling short of the rectangular patch 6 constitute inductance loading；
The grooving floor 4 is rectangle；
The length and width on the grooving floor 4 respectively with the length and width phase of the rectangle single-layer double-side pcb board 3
Together.
Further,
The working frequency of the circularly-polarized patch antenna is 5.8GHz ISM bands.
Further,
Such as Fig. 2, the major axis a1 of the antenna of the ellipse patch 1 be the circularly-polarized patch antenna working frequency corresponding to ripple
Long 0.34 times, the major axis a1 of the antenna of the ellipse patch 1 and the short axle b1 axles ratio of the antenna of the ellipse patch 1 are 1.0438.
Further,
If Fig. 2, the rectangle single-layer double-side pcb board 3 are FR4_epoxy microwave materials, relative dielectric constant is 4.4, just
It is 0.02 to cut loss, and thickness is 1mm, and the thickness of double face copper is 35 μm, and length L1 is 33.5mm, and width W1 is 40mm.
Further,
Such as Fig. 2, the input impedance of the microstrip feed line 2 is 50 Ω, and length L2 is 8mm, and width W2 is 1.82mm.
Further,
Area of the area of the oval groove 5 more than the ellipse patch 1.
Further,
The major axis a2 of the oval groove 5 is 22mm, and short axle b2 is 21.07mm.
Further,
Such as Fig. 3, the length L3 of the rectangular patch 1 is 15mm, and width W3 is 1.85mm.
Further,
The major axis of the oval groove 5 is 45 degree with the projection angle of the microstrip feed line 2；
Further,
The major axis of the ellipse patch 1 is 45 degree with the angle of the microstrip feed line 2.
A kind of overall structure of orientation circularly-polarized patch antenna for medical treatment detection that Fig. 1 is provided for the utility model
Figure.The antenna is made up of the floor 4 of ellipse patch 1, microstrip feed line 2, rectangle single-layer double-side pcb board 3 and grooving.
Fig. 2 is the ellipse patch antenna assumption diagram in the utility model embodiment, including ellipse patch 1 and microstrip feed line 2
And rectangle single-layer double-side pcb board 3.
In specific implementation, the major axis of ellipse patch 1 and the angle of microstrip feed line 2 are 45 degree.The major axis a1 of ellipse patch 1
It is 0.34 times of wavelength corresponding to Antenna Operation centre frequency, a1 is 17.35mm, and b1 is 16.62mm, and axle ratio is 1.0438.It is micro-
The input impedance of ribbon feeder is 50 Ω, and length L2 is 8mm, and width W2 is 1.82mm.Rectangle single-layer double-side pcb board 3 selects FR4_
Epoxy microwave materials, dielectric constant is 4.4, and tangent loss is 0.02, and thickness is 1mm, and the thickness of double face copper is 35 μ
m.Length L1 is 33.5mm, and width W1 is 40mm.
Fig. 3 is the floor panel structure figure of the grooving in the utility model embodiment, including the oval groove 5 and rectangular patch for hollowing out
6。
In specific implementation, the major axis of the oval groove 5 for hollowing out and the projection angle of microstrip feed line 2 are 45 degree, and oval groove 5
Area more than ellipse patch 1 area.The major axis a2 of oval groove 5 is 22mm, and short axle b2 is 21.07mm.The length of rectangular patch 6
Degree L3 is 15mm, and width W3 is 1.85mm.
Wherein, oval groove 5 constitutes capacitive load, ellipse patch 1 and the coupling of rectangular patch 6 with the circumferential weld that ellipse patch 1 is formed
Close short circuit and constitute inductance loading, so as to realize that circular polarisation directionality is radiated in working frequency range.
A kind of echo of orientation circularly-polarized patch antenna for medical treatment detection that Fig. 4 is provided for the utility model embodiment
Loss figure.As shown in figure 4, the operating center frequency of the antenna is 5.8GHz, working band is 5.42GHz-6.32GHz, definitely
Bandwidth reaches 0.9GHz, meets the requirement of broad-band antenna.
A kind of electromagnetism of orientation circularly-polarized patch antenna for medical treatment detection that Fig. 5 is provided for the utility model embodiment
Emulation axle compares curve map.As shown in figure 5, in the range of main radiation direction -4.5deg-21.0deg, axle shows than respectively less than 3dB
Circular polarisation effect is preferable.
Fig. 6 for the utility model embodiment provide it is a kind of for medical treatment detection orientation circularly-polarized patch antenna xz and
Gain pattern on yz sections.As shown in fig. 6, the gain pattern on xz sections shows antenna radiation along the z-axis direction
Most strong, the gain pattern on yz sections shows that the antenna is concentrated very much along the radiation of z-axis and-z-axis direction, so as to illustrate set
Meter antenna has good directed radiation performance.
The utility model discloses a kind of orientation circularly-polarized patch antenna for medical treatment detection, by ellipse patch 1, micro-strip
The floor 4 of feeder line 2, rectangle single-layer double-side pcb board 3 and grooving constitutes.The rectangle single-layer double-side pcb board 3 selects FR4_
Epoxy microwave materials, the grooving floor 4 is made up of the oval groove 5 and rectangular patch 6 for hollowing out.The utility model simple structure,
The features such as small volume, low cost and working band wide, compared with existing circular polarization microstrip antenna, the design is presented using single-point
Electricity, while the mode of loading capacitance and inductance is realized orienting circular polarisation, and it works in 5.8GHz ISM bands, can extensive use
In medical detection field.
The instrument that the utility model is applied to the medical detector of 5.8GHz ISM bands or has orientation to require to radiation direction
Device equipment.The utility model provides a kind of circularly-polarized patch antenna for medical treatment detection, by loading capacitance and inductance
Mode realizes circular polarisation, simplification, miniaturization and the directionality design of antenna, and the utility model antenna performance is higher, robustness
By force, practicality is high, and low cost, and designing antenna is designed using single-point feedback, simple structure, it is easy to integrated, with other entelechies
Change microstrip antenna to compare without external circular polarisation feeding network, and preferable circular polarization radiation effect can be formed, additionally, the design
Realize antenna to be designed with network integration, be capable of achieving array antenna design, it is adaptable to it is required that the medical treatment detection of circular polarized antenna
In equipment.
Detailed Jie has been carried out to a kind of circularly-polarized patch antenna for medical treatment detection provided by the utility model above
Continue, for those of ordinary skill in the art, according to the thought of the utility model embodiment, in specific embodiment and apply model
Place and will change, in sum, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
1. a kind of for the medical circularly-polarized patch antenna for detecting, it is characterised in that including：
Ellipse patch, microstrip feed line, single-layer double-side pcb board, grooving floor；
The microstrip feed line is protruded and is connected at the ellipse patch periphery；
The grooving floor includes the oval groove, the rectangular patch that hollow out；
The rectangular patch is recessed in the oval groove；
The oval groove constitutes capacitive load with the circumferential weld that the ellipse patch is formed；
The ellipse patch and the rectangular patch coupling short constitute inductance loading.
2. according to claim 1 for the medical circularly-polarized patch antenna for detecting, it is characterised in that
The working frequency of the circularly-polarized patch antenna is 5.8GHz ISM bands.
3. according to claim 2 for the medical circularly-polarized patch antenna for detecting, it is characterised in that
The major axis a1 of the ellipse patch be the circularly-polarized patch antenna working frequency corresponding to 0.3-0.4 times of wavelength,
The major axis a1 of the ellipse patch and the short axle b1 axles ratio of the ellipse patch are 1.04-1.05.
4. according to claim 3 for the medical circularly-polarized patch antenna for detecting, it is characterised in that
The single-layer double-side pcb board is FR4_epoxy microwave materials, and relative dielectric constant is 4-5, and tangent loss is 0-0.05,
Thickness is 0-2mm, and the thickness of double face copper is 30-40 μm, and length L1 is 30-35mm, and width W1 is 30-50mm.
5. according to claim 4 for the medical circularly-polarized patch antenna for detecting, it is characterised in that
The input impedance of the microstrip feed line is 50 Ω, and length L2 is 8mm, and width W2 is 1.82mm.
6. according to claim 5 for the medical circularly-polarized patch antenna for detecting, it is characterised in that
Area of the area of the oval groove more than the ellipse patch.
7. it is according to claim 6 for the medical circularly-polarized patch antenna for detecting, it is characterised in that the oval groove
Major axis a2 is 15-30mm, and short axle b2 is 21-22mm.
8. it is according to claim 7 for the medical circularly-polarized patch antenna for detecting, it is characterised in that the rectangular patch
Length L3 be 10-20mm, width W3 be 1.6-2.0mm.
9. it is according to claim 8 for the medical circularly-polarized patch antenna for detecting, it is characterised in that the oval groove
Major axis is 40-50 degree with the projection angle of the microstrip feed line.
10. it is according to claim 9 for the medical circularly-polarized patch antenna for detecting, it is characterised in that the oval patch
The major axis of piece is 40-50 degree with the angle of the microstrip feed line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364525.4U CN206271883U (en) | 2016-12-13 | 2016-12-13 | A kind of circularly-polarized patch antenna for medical treatment detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364525.4U CN206271883U (en) | 2016-12-13 | 2016-12-13 | A kind of circularly-polarized patch antenna for medical treatment detection |
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| Publication Number | Publication Date |
|---|---|
| CN206271883U true CN206271883U (en) | 2017-06-20 |
Family
ID=59045287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621364525.4U Expired - Fee Related CN206271883U (en) | 2016-12-13 | 2016-12-13 | A kind of circularly-polarized patch antenna for medical treatment detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602256A (en) * | 2016-12-13 | 2017-04-26 | 广东工业大学 | Circularly polarized patch antenna for medical detection |
| CN109616775A (en) * | 2018-11-12 | 2019-04-12 | 广东曼克维通信科技有限公司 | Circular polarized antenna |
| CN113937502A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Stable-gain broadband slot circularly polarized antenna and wireless communication system |
-
2016
- 2016-12-13 CN CN201621364525.4U patent/CN206271883U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602256A (en) * | 2016-12-13 | 2017-04-26 | 广东工业大学 | Circularly polarized patch antenna for medical detection |
| CN109616775A (en) * | 2018-11-12 | 2019-04-12 | 广东曼克维通信科技有限公司 | Circular polarized antenna |
| CN109616775B (en) * | 2018-11-12 | 2020-09-18 | 广东曼克维通信科技有限公司 | Circularly polarized antenna |
| CN113937502A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Stable-gain broadband slot circularly polarized antenna and wireless communication system |
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Granted publication date: 20170620 Termination date: 20201213 |