CN109687119A - Double arcuation RF energies of slotting absorb microstrip antenna - Google Patents
Double arcuation RF energies of slotting absorb microstrip antenna Download PDFInfo
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- CN109687119A CN109687119A CN201811408671.6A CN201811408671A CN109687119A CN 109687119 A CN109687119 A CN 109687119A CN 201811408671 A CN201811408671 A CN 201811408671A CN 109687119 A CN109687119 A CN 109687119A
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- 230000005855 radiation Effects 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000013461 design Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention discloses a kind of double arcuation RF energies of slotting to absorb microstrip antenna, its structure includes top layer radiation patch and feed metal microstrip line, medium substrate and bottom radiation patch from top to bottom, feed metal microstrip line and top layer radiation patch are on medium substrate upper layer, top layer radiation patch is made of small one and large one identical arcuation patch of two shapes, bottom radiation patch is by traditional rectangular bottom radiation patch as obtained by fluting, the fluting includes a top slot, two inside notches and two outside notches.The present invention has good omni-directional, preferable standing-wave ratio and gain, so as to efficiently receive the RF energy in environment from all directions.
Description
Technical field
The invention belongs to electromagnetic energy receiving antenna technical fields, and in particular to one kind is for receiving RF energy in environment
The double arcuation RF energies of fluting absorb microstrip antennas.
Background technique
With the development of modern medical service level, wireless device is increasingly taken seriously in medical applications, is increasingly becoming and grinds
The hot spot studied carefully.When monitoring various physiological parameter (such as blood pressure, temperature, glucose), need to use in biomedical applications
Wireless system.Micro-strip paster antenna due to its is small in size, light weight, be easy to make and price it is more cheap, in such applications
It is widely used as powering device.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of double arcuation radio frequency energy of fluting being simple in structure and reasonable in design
Amount absorbs microstrip antenna, possesses smaller size, preferable standing-wave ratio and omni-directional for the more other antennas of the antenna.
The present invention adopts the following technical scheme that double arcuation RF energies of slotting absorb micro-strip day to solve above-mentioned technical problem
Line, it is characterised in that the micro-strip electric wire include from top to bottom top layer radiation patch and feed metal microstrip line, medium substrate and
Bottom radiation patch；The medium substrate is a length of 37mm, width 35mm, thickness d=1.6mm rectangular cubic, material
For FR4, permittivity εr=4.4.The design and size of the top layer radiation patch meet claimed below, and the radiation patch is by one
The identical arcuation patch composition of big small two shapes；The arcuation patch institute is 270 ° to central angle, and the width of small arc is
The width of 1.2mm, big arc are 2.1mm, and small arc is placed in inside big arc.The big arc and small arc have three identical curve structures
At the curve symmetrical gained after being unfolded by virgin curve.Using medium substrate lower end midpoint as origin, with medium substrate long side
Direction is that positive direction of the y-axis establishes rectangular coordinate system, and the small arc and big arc are symmetrical about y-axis；The small arc to the seat in the center of circle
It is designated as: O1(0,18.7), the coordinate of two-end-point are as follows: A (- 5.5,24.2), B (5.5,24.2), two apex coordinates are as follows: C (- 8.4,
18.7),D(8.4,18.7).The big arc be O to the coordinate in the center of circle2(0,21.3), the coordinate of two-end-point are as follows: E (- 10,
31.3), (10,31.3) F, the coordinate on two vertex are as follows: G (- 15.4,21.3), H (15.4,21.3).The feed metal microstrip line
The perpendicular bisector of the rectangular patch for being 3.2mm for a length of 27.5mm, width, short side is overlapped with y-axis, lower end and medium substrate lower end phase
Even.The design size of the bottom radiation patch meets claimed below, which is led to by traditional rectangular bottom radiation patch
Cross fluting gained, a length of 35mm of traditional rectangular bottom radiation patch, width 14.7mm, lower end and medium substrate lower end phase
Even, the otch includes a top slot, two inside notches and two outside notches.The top slot is by a line
Section and a curve surround, and the line segment is overlapped with the upper end of the traditional rectangular bottom radiation patch, the curve
It is open identical as the traditional rectangular bottom radiation patch length, the coordinate of bottom end vertex I is (0,7.1).The inner side slot
Mouth is symmetrical respectively about y-axis with outside notch and notch endpoint is all located at two short side of traditional rectangular bottom radiation patch
On, inside notch is surrounded by two curves, and the curve is obtained by above-mentioned curve negotiating stretching conversion；Four end of inside notch
The coordinate of point is respectively as follows: J1(-17.5,11)、J2(17.5,11)、K1(-17.5,0.84)、K2(- 17.5,0.84), two vertex
Coordinate is respectively as follows: L1(-4.5,5.9)、L2(4.5,5.9).The outside notch is by notch point on the inside of notch on the inside of left side and right side
Not to the left, to right translation 5mm gained, four extreme coordinates coordinates are as follows: M1(-17.5,10.1)、M2(17.5,10.1)、N1(-
17.5,1.7)、N2The coordinate of (17.5,1.7), two vertex is respectively as follows: P1(-9.5,5.9)、P2(9.5,5.9)。
Detailed description of the invention
Fig. 1 is curve generating process；
Fig. 2 is slot double arcuation RF energies absorption microstrip antenna top layer radiation patches and feed metal microstrip line schematic diagram；
Fig. 3 is double arcuation RF energies absorption microstrip antenna bottom radiation patch schematic diagrames of slotting；
Fig. 4 is double arcuation RF energies absorption microstrip antenna structure schematic diagrames of slotting；
Fig. 5 is pair return loss plot of arcuation RF energies absorption microstrip antennas of slotting；
Fig. 6 is pair 3D gain diagram of arcuation RF energies absorption microstrip antennas of slotting.
In figure: 1, big arc patch, 2, small arc patch, 3, feed metal microstrip line, 4, medium substrate upper layer, 5, upper end slot
Mouthful, 6, medium substrate lower layer, 7, bottom radiation patch, 8, inside notch, 9, outside notch, 10, medium substrate, 11, top layer spoke
Penetrate unit, 12, bottom radiating element.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, the technical solution in specific implementation process of the present invention is carried out clear, complete
Whole, the invention core is double arcuation RF energies absorption microstrip antenna designs of slotting, and is needed in microstrip antenna designs
To the size for reducing return loss RF energy and collecting the metal antenna patch of microstrip antenna, the size of medium substrate, thickness into
The theoretic estimation of row more quickly could accurately find the reduction echo damage of suitable specific frequency when simulated experiment
It consumes RF energy and collects microstrip antenna.So below by taking rectangular microstrip antenna as an example, the explanation each data parameters of microstrip antenna
Theoretical calculation method.
Patch size L × W, patch width W are as follows:
In (1) formula, c is the light velocity, f0For forbidden band centre frequency, εrFor relative dielectric constant.
The relative efficiency permittivity ε of microstrip antenna medium substratereAre as follows:
H indicates thickness of dielectric layers, and in order to reduce influence of the surface wave to antenna performance, the thickness of dielectric substrate should
Meet theoretical calculation formula:
Wherein fuFor the highest frequency of the work of microstrip antenna.
The equivalent radiated power gap length △ L of microstrip antenna are as follows:
The then length L of microstrip antenna patch are as follows:
The size L of earth plateg×WgMeet following theoretical formula
Lg≥L+6h (6)
Wg≥W+6h (7)
Rectangular microstrip antenna is that coaxial line is fed, after the length and width of rectangular patch has been determined, generally
The normal impedance of 50 Ω is added in microstrip antenna.
As shown in Figs 1-4, double arcuation RF energies of slotting absorb microstrip antennas, it is characterised in that the micro-strip electric wire is from upper
And lower includes top layer radiation patch and feed metal microstrip line, medium substrate and bottom radiation patch；The medium substrate is length
For 37mm, width 35mm, thickness d=1.6mm rectangular cubic, material FR4, permittivity εr=4.4.The top layer
The design and size of radiation patch meet claimed below, and the radiation patch is by small one and large one identical arcuation patch group of two shapes
At；The arcuation patch institute is 270 ° to central angle, and the width of small arc is 1.2mm, and the width of big arc is 2.1mm, and small arc is placed in
Inside big arc.The big arc and small arc have three identical curves to constitute, the curve symmetrical gained after being unfolded by virgin curve.
Using medium substrate lower end midpoint as origin, rectangular coordinate system is established by positive direction of the y-axis of medium substrate longitudinal direction, it is described
Small arc is symmetrical about y-axis with big arc；The small arc to the coordinate in the center of circle are as follows: O1(0,18.7), the coordinate of two-end-point are as follows: A (-
5.5,24.2), (5.5,24.2) B, two apex coordinates are as follows: C (- 8.4,18.7), D (8.4,18.7).The big arc institute is to the center of circle
Coordinate be O2(0,21.3), the coordinate of two-end-point are as follows: E (- 10,31.3), F (10,31.3), the coordinate on two vertex are as follows: G (-
15.4,21.3),H(15.4,21.3).The rectangular patch that the feed metal microstrip line is a length of 27.5mm, width is 3.2mm, it is short
The perpendicular bisector on side is overlapped with y-axis, and lower end is connected with medium substrate lower end.The design size of the bottom radiation patch meets following
It is required that the radiation patch by traditional rectangular bottom radiation patch as fluting obtained by, the traditional rectangular bottom radiation patch is long
For 35mm, width 14.7mm, lower end is connected with medium substrate lower end, and the otch includes a top slot, two insides
Notch and two outside notches.The top slot is surrounded by a line segment and a curve, the line segment and the biography
The upper end for rectangle bottom radiation patch of uniting is overlapped, the opening of the curve and the traditional rectangular bottom radiation patch length phase
Together, the coordinate of bottom end vertex I is (0,7.1).The inside notch and outside notch be symmetrical respectively about y-axis and notch endpoint
All be located on two short side of traditional rectangular bottom radiation patch, inside notch is surrounded by two curves, the curve by
Obtained by above-mentioned curve negotiating stretching conversion；The coordinate of four endpoint of inside notch is respectively as follows: J1(-17.5,11)、J2(17.5,
11)、K1(-17.5,0.84)、K2(- 17.5,0.84), the coordinate on two vertex is respectively as follows: L1(-4.5,5.9)、L2(4.5,5.9)。
The outside notch from notch on the inside of notch on the inside of left side and right side respectively to the left, to obtained by right translation 5mm, four extreme coordinates
Coordinate are as follows: M1(-17.5,10.1)、M2(17.5,10.1)、N1(-17.5,1.7)、N2(17.5,1.7), the coordinate point on two vertex
Not are as follows: P1(-9.5,5.9)、P2(9.5,5.9)。
Fig. 4 is slot pair return loss plot of arcuation RF energies absorption microstrip antennas, as seen from the figure, the double arcuations of the fluting
The return loss that RF energy absorbs microstrip antenna is -29.13dB, and better performances are suitble to carry out RF energy in LTE frequency range
It collects.
Fig. 5 is slot pair input 3D gain diagram of arcuation RF energies absorption microstrip antennas, as seen from the figure, the double arcs of the fluting
Shape RF energy absorption microstrip antenna is essentially identical to all directions gain in 2.41GHz, has good omni-directional.
Embodiment above describes basic principles and main features of the invention and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (1)
1. double arcuation RF energies of slotting absorb microstrip antenna, it is characterised in that the micro-strip electric wire includes top layer spoke from top to bottom
Penetrate patch and feed metal microstrip line, medium substrate and bottom radiation patch；The medium substrate is a length of 37mm, width is
35mm, thickness d=1.6mm rectangular cubic, material FR4, permittivity εr=4.4, the top layer radiation patch
Design and size meet claimed below, which is made of small one and large one identical arcuation patch of two shapes；The arc
Shape patch institute is 270 ° to central angle, and the width of small arc is 1.2mm, and the width of big arc is 2.1mm, and small arc is placed in inside big arc,
The big arc and small arc have three identical curves to constitute, the curve symmetrical gained after being unfolded by virgin curve, to be given an account of
Matter substrate lower end midpoint is origin, is that positive direction of the y-axis establishes rectangular coordinate system using medium substrate longitudinal direction, the small arc with greatly
Arc is symmetrical about y-axis；The small arc to the coordinate in the center of circle are as follows: O1(0,18.7), the coordinate of two-end-point are as follows: A (- 5.5,
24.2), (5.5,24.2) B, two apex coordinates are as follows: C (- 8.4,18.7), D (8.4,18.7), the big arc to the seat in the center of circle
It is designated as O2(0,21.3), the coordinate of two-end-point are as follows: E (- 10,31.3), F (10,31.3), the coordinate on two vertex are as follows: G (- 15.4,
21.3), (15.4,21.3) H, the rectangular patch that the feed metal microstrip line is a length of 27.5mm, width is 3.2mm, short side
Perpendicular bisector is overlapped with y-axis, and lower end is connected with medium substrate lower end, and the design size of the bottom radiation patch meets following want
It asks, for the radiation patch by traditional rectangular bottom radiation patch as obtained by fluting, the traditional rectangular bottom radiation patch is a length of
35mm, width 14.7mm, lower end are connected with medium substrate lower end, and the otch includes a top slot, two inner side slots
Mouth and two outside notches, the top slot are surrounded by a line segment and a curve, the line segment and the tradition
The upper end of rectangle bottom radiation patch is overlapped, and the opening of the curve is identical as the traditional rectangular bottom radiation patch length,
The coordinate of its bottom end vertex I is (0,7.1), the inside notch and outside notch be symmetrical respectively about y-axis and notch endpoint all
It is located on two short side of traditional rectangular bottom radiation patch, inside notch is surrounded by two curves, and the curve is by upper
It states obtained by curve negotiating stretching conversion；The coordinate of four endpoint of inside notch is respectively as follows: J1(-17.5,11)、J2(17.5,
11)、K1(-17.5,0.84)、K2(- 17.5,0.84), the coordinate on two vertex is respectively as follows: L1(-4.5,5.9)、L2(4.5,5.9),
The outside notch from notch on the inside of notch on the inside of left side and right side respectively to the left, to obtained by right translation 5mm, four extreme coordinates
Coordinate are as follows: M1(-17.5,10.1)、M2(17.5,10.1)、N1(-17.5,1.7)、N2(17.5,1.7), the coordinate point on two vertex
Not are as follows: P1(-9.5,5.9)、P2(9.5,5.9)。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408671.6A CN109687119B (en) | 2018-11-23 | 2018-11-23 | Slotted double-arc radio frequency energy absorption microstrip antenna |
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| CN201811408671.6A CN109687119B (en) | 2018-11-23 | 2018-11-23 | Slotted double-arc radio frequency energy absorption microstrip antenna |
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| CN109687119A true CN109687119A (en) | 2019-04-26 |
| CN109687119B CN109687119B (en) | 2020-10-16 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211825B1 (en) * | 1999-09-03 | 2001-04-03 | Industrial Technology Research Institute | Dual-notch loaded microstrip antenna |
| KR20060100350A (en) * | 2006-09-01 | 2006-09-20 | 김남수 | Design method of the single-feed dual-band planar antenna for vehicle satellite dmb and its reception |
| CN203398273U (en) * | 2013-08-22 | 2014-01-15 | 中国计量学院 | A symmetric circularly-annular microstrip antenna |
| CN104466408A (en) * | 2014-12-19 | 2015-03-25 | 夏景 | Circular slot ultra wide band microstrip patch antenna |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN106329094A (en) * | 2015-06-17 | 2017-01-11 | 张家港市华正进出口贸易有限公司 | Fractal microstrip antenna |
| CN207925669U (en) * | 2018-02-11 | 2018-09-28 | 上海健康医学院 | A kind of antenna for communication |
| CN108767460A (en) * | 2018-05-23 | 2018-11-06 | 辽宁工程技术大学 | A kind of ultra-wideband antenna with three trap characteristics |
-
2018
- 2018-11-23 CN CN201811408671.6A patent/CN109687119B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211825B1 (en) * | 1999-09-03 | 2001-04-03 | Industrial Technology Research Institute | Dual-notch loaded microstrip antenna |
| KR20060100350A (en) * | 2006-09-01 | 2006-09-20 | 김남수 | Design method of the single-feed dual-band planar antenna for vehicle satellite dmb and its reception |
| CN203398273U (en) * | 2013-08-22 | 2014-01-15 | 中国计量学院 | A symmetric circularly-annular microstrip antenna |
| CN104466408A (en) * | 2014-12-19 | 2015-03-25 | 夏景 | Circular slot ultra wide band microstrip patch antenna |
| CN106329094A (en) * | 2015-06-17 | 2017-01-11 | 张家港市华正进出口贸易有限公司 | Fractal microstrip antenna |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN207925669U (en) * | 2018-02-11 | 2018-09-28 | 上海健康医学院 | A kind of antenna for communication |
| CN108767460A (en) * | 2018-05-23 | 2018-11-06 | 辽宁工程技术大学 | A kind of ultra-wideband antenna with three trap characteristics |
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