CN108134186A - Low loss RF receiving system - Google Patents
Low loss RF receiving system Download PDFInfo
- Publication number
- CN108134186A CN108134186A CN201711253344.3A CN201711253344A CN108134186A CN 108134186 A CN108134186 A CN 108134186A CN 201711253344 A CN201711253344 A CN 201711253344A CN 108134186 A CN108134186 A CN 108134186A
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- China
- Prior art keywords
- medium substrate
- rotating graphs
- antenna patch
- metal
- original
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
- H02J50/27—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of receiving antennas, e.g. rectennas
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of low loss RF receiving systems, including the medium substrate and earth plate that size from top to bottom is consistent and is bonded to each other, metal antenna patch is wherein pasted on medium substrate, the middle part of medium substrate is equipped with the cylindrical metal conductor for extending vertically through medium substrate, and earth plate is equipped with the circular hole concentric with cylindrical metal conductor bottom surface.The present invention has lower return loss, good impedance matching and standing-wave ratio and higher gain, so as to the RF energy in efficient reception environment.
Description
Technical field
The invention belongs to electromagnetic energy reception antenna technical fields, and in particular to one kind is used to receive RF energy in environment
Low loss RF receiving system.
Background technology
In recent years, super low-power consumption, low-voltage electronic component and circuit it is a large amount of occur and actual life in it is a large amount of not
Being widely used for the electronic microsystem of battery is easily replaced, causes the extensive pass that people study ambient radio-frequency energy collection technique
Note.
Currently, the wireless sensing of battery is mainly replaced in ambient radio-frequency energy is collected research and application in low-power consumption and being not easy
Network node and implanted electronic equipment etc..
Invention content
The technical problem to be solved by the present invention is to provide a kind of simple in structure and reasonable design low loss RF signals to connect
Receipts system, the smaller size possessed for the more other antennas of the antenna, the loss of relatively low clawback, good impedance matching
Higher gain.
The present invention adopts the following technical scheme that low loss RF receiving system is special to solve above-mentioned technical problem
Sign is to include the consistent medium substrate of size and earth plate from top to bottom, and wherein medium substrate upper surface is pasted with metal antenna patch
Piece, the middle part of medium substrate are equipped with the cylindrical metal conductor for extending vertically through medium substrate, and earth plate is equipped with and cylinder gold
Belong to the concentric circular hole in conductor bottom surface, the radius of the round covering surface of the metal antenna patch is 0.1 λ, wherein λ=122mm, λ
For the wavelength of 2.45GHz radio frequencies, thickness 0.02mm, material is copper, and the material of the medium substrate is Rogers RO6010,
Permittivity εr=10.2, thickness d=2.54mm, length and width is 30mm, the central point and medium of metal antenna patch
The center position of upper surface of base plate is consistent；The design shape and size of the metal antenna patch meet following requirement, establish
Plane right-angle coordinate carries out the design of metal antenna patch according to the following formula：
The line segment that above formula obtains is sequentially connected, obtains original figure one, by original figure one using straight line y=0 as
Symmetry axis carries out mirror symmetry, obtains original figure two, and original figure one and original figure two merge, and obtain geometric figure one,
By geometric figure one with pointAs the point of rotation, rotate clockwise successively 60 °, 120 °, 180 °, 240 ° and
300 °, respectively obtain rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and rotating graphs six.Geometric figure
First, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and the rotating graphs six directions and closed figure is obtained, it will
The reduced radius of the round covering surface of closed figure obtains the metal day of required specific shape and size to original 0.4438 times
Line patch obtains required metal patch；One end of the cylindrical metal conductor is connect with metal antenna patch, cylindrical gold
The material for belonging to conductor is copper, bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna patch
The junction center of circle of piece and the vertical range of four sides of medium substrate be respectively 16.51mm, 16.51mm, 13.49mm and
13.49mm, the aperture R=1.9mm of circular hole, the cylindrical metal conductor are another on the earth plate opposite with cylindrical metal conductor
The output interface of one end is connected with energy management circuit, which is used to store the energy being absorbed into.
The present invention technique effect be：Low loss RF receiving system has lower return loss, good resistance
Anti- matching and standing-wave ratio and higher gain, so as to the RF energy in efficient reception environment.
Description of the drawings
Fig. 1 is the structure diagram of metal antenna patch；
Fig. 2 is low loss RF receiving system structure diagram；
Fig. 3 is the return loss using the low loss RF receiving system of HFSS antenna modelings simulation software simulation
Figure；
Fig. 4 is the 3D gain diagrams using the low loss RF receiving system of HFSS antenna modelings simulation software simulation.
In figure：1st, medium substrate, 2, earth plate, 3, metal antenna patch, 4, cylindrical metal conductor, 5, circular hole.
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, specific description.
The core of the invention is the design of low loss RF receiving system, is needed in microstrip antenna designs to low
The size of the metal antenna patch of rf signal reception system is lost, the size of medium substrate, thickness carry out theoretic estimation,
The low loss RF receiving system of suitable specific frequency more quickly could be accurately found when simulated experiment.Institute
By following by taking rectangular microstrip antenna as an example, the theoretical calculation method of each data parameters of microstrip antenna is explained.
Patch size L × W, patch width W are：
In (1) formula,cFor the light velocity, f0For forbidden band centre frequency, εrFor relative dielectric constant.
The relative efficiency permittivity ε of microstrip antenna medium substratereFor：
H represents 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 fuThe highest frequency of work for microstrip antenna.
The equivalent radiated power gap length △ L of microstrip antenna are：
Then the length L of microstrip antenna patch is：
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 that rectangular patch is determined, generally
The normal impedance of 50 Ω is added in microstrip antenna.
As shown in Figs. 1-2, low loss RF receiving system, including Jie that size from top to bottom is consistent and is bonded to each other
Matter substrate 1 and earth plate 2, wherein 1 upper surface of medium substrate are pasted with metal antenna patch 3, and the middle part of medium substrate 1, which is equipped with, hangs down
The straight cylindrical metal conductor 4 for running through medium substrate 1, earth plate 2 are equipped with the circular hole concentric with 4 bottom surface of cylindrical metal conductor
5；The radius of the round covering surface of the metal antenna patch 3 is 0.11115 λ, and wherein λ=122mm, λ are 2.45GHz radio frequencies
Wavelength, thickness 0.02mm, material are copper, and the material of the medium substrate 1 is Rogers RO6010, permittivity εr=
10.2, thickness d=2.54mm, length and width is 30mm, the central point of metal antenna patch 3 and 1 upper surface of medium substrate
Center position it is consistent；The design shape and size of the metal antenna patch 3 meet following requirement, the metal antenna patch
The design shape and size of piece meet following requirement, establish plane right-angle coordinate, and metal antenna patch is carried out according to the following formula
The design of piece：
The line segment that above formula obtains is sequentially connected, obtains original figure one, by original figure one using straight line y=0 as
Symmetry axis carries out mirror symmetry, obtains original figure two, and original figure one and original figure two merge, and obtain geometric figure one,
By geometric figure one with pointAs the point of rotation, rotate clockwise successively 60 °, 120 °, 180 °, 240 ° and
300 °, respectively obtain rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and rotating graphs six.Geometric figure
First, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and the rotating graphs six directions and closed figure is obtained, it will
The reduced radius of the round covering surface of closed figure obtains the metal day of required specific shape and size to original 0.4438 times
Line patch 3；One end of the cylindrical metal conductor 4 is connect with metal antenna patch 3, and the material of cylindrical metal conductor 4 is
Copper, bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor 4 and the junction of metal antenna patch 3 are justified
The heart and the vertical range of 1 four sides of medium substrate are respectively 16.51mm, 16.51mm, 13.49mm and 13.49mm, with cylinder
The aperture R=1.9mm of circular hole on the opposite earth plate 2 of shape metallic conductor 4, the output of 4 other end of cylindrical metal conductor
Interface is connected with energy management circuit, which is used to store the energy being absorbed into.
Fig. 3 is the return loss using the low loss RF receiving system of HFSS antenna modelings simulation software simulation
Figure, as seen from the figure, the return loss of the low loss RF receiving system is -38dB, than returning for other same volume antennas
Wave loss is also small, and performance is very good.
Fig. 4 is the 3D gain diagrams for the low loss RF receiving system simulated using HFSS antenna modelings simulation software,
As seen from the figure, which is 3.6dB in the gain of 2.45GHz, and directionality is highly stable.
Basic principle, main features and advantages embodiment above describes the present invention, 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 the originals of the present 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. low loss RF receiving system, it is characterised in that including the consistent medium substrate of size from top to bottom and earth plate,
Wherein medium substrate upper surface is pasted with metal antenna patch, and the middle part of medium substrate is equipped with the cylinder for extending vertically through medium substrate
Shape metallic conductor, earth plate are equipped with the circular hole concentric with cylindrical metal conductor bottom surface, the circle of the metal antenna patch
The radius of covering surface is 0.1 λ, and wherein λ=122mm, λ are the wavelength of 2.45GHz radio frequencies, and thickness 0.02mm, material is copper, institute
The material of medium substrate is stated as Rogers RO6010, permittivity εr=10.2, thickness d=2.54mm, length and width is
30mm, the central point of metal antenna patch are consistent with the center position of medium substrate upper surface；The metal antenna patch
Design shape and size meet following requirement, establish plane right-angle coordinate, and metal antenna patch is carried out according to the following formula
Design：
The line segment that above formula obtains is sequentially connected, obtains original figure one, using straight line y=0 is symmetrical by original figure one
Axis carries out mirror symmetry, obtains original figure two, original figure one and original figure two merge, and obtain geometric figure one, will be several
What figure one is with pointAs the point of rotation, rotate clockwise successively 60 °, 120 °, 180 °, 240 ° and
300 °, respectively obtain rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and rotating graphs six, geometric figure
First, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five and the rotating graphs six directions and closed figure is obtained, it will
The reduced radius of the round covering surface of closed figure obtains the metal day of required specific shape and size to original 0.4438 times
Line patch obtains required metal patch；One end of the cylindrical metal conductor is connect with metal antenna patch, cylindrical gold
The material for belonging to conductor is copper, bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna patch
The junction center of circle of piece and the vertical range of four sides of medium substrate be respectively 16.51mm, 16.51mm, 13.49mm and
13.49mm, the aperture R=1.9mm of circular hole, the cylindrical metal conductor are another on the earth plate opposite with cylindrical metal conductor
The output interface of one end is connected with energy management circuit, which is used to store the energy being absorbed into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253344.3A CN108134186A (en) | 2017-12-02 | 2017-12-02 | Low loss RF receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253344.3A CN108134186A (en) | 2017-12-02 | 2017-12-02 | Low loss RF receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108134186A true CN108134186A (en) | 2018-06-08 |
Family
ID=62389131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711253344.3A Withdrawn CN108134186A (en) | 2017-12-02 | 2017-12-02 | Low loss RF receiving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108134186A (en) |
-
2017
- 2017-12-02 CN CN201711253344.3A patent/CN108134186A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180608 |
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| WW01 | Invention patent application withdrawn after publication |