CN116247437A - Surface waveguide microstrip antenna applied to solid color center spin - Google Patents
Surface waveguide microstrip antenna applied to solid color center spin Download PDFInfo
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- CN116247437A CN116247437A CN202211623502.0A CN202211623502A CN116247437A CN 116247437 A CN116247437 A CN 116247437A CN 202211623502 A CN202211623502 A CN 202211623502A CN 116247437 A CN116247437 A CN 116247437A
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- layer antenna
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- diamond
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- surface waveguide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a surface waveguide microstrip antenna applied to solid color center spinning, which comprises an outer layer antenna, an intermediate layer antenna and an inner layer antenna, wherein the outer layer antenna and the intermediate layer antenna are positioned on a substrate; a blind hole is formed in the substrate, the diamond is nested in the blind hole, and the upper surface of the diamond is flush with the upper surface of the substrate; the outer layer antenna, the middle layer antenna and the inner layer antenna are all square ring-shaped and are nested in sequence from outside to inside; the side of each of the outer layer antenna and the middle layer antenna is provided with an opening, and the openings of the outer layer antenna and the middle layer antenna are positioned at the opposite sides of the antennas; the outer layer antenna, the middle layer antenna and the inner layer antenna form a surface waveguide microstrip antenna together, and the resonance frequency is 2.87GHz; electromagnetic waves are transmitted between the surface waveguide microstrip antennas in a radiation mode, and resonance is generated. The invention has the advantages of higher power, higher uniformity of the microwave magnetic field, no need of extra flying wires and simple installation process.
Description
Technical Field
The invention relates to the field of magnetic field measurement, in particular to a surface waveguide microstrip antenna applied to solid color center spinning.
Background
The weak magnetic field test work is widely applied to a plurality of fields such as physical research, biomedical treatment, deep space exploration and the like. Among them, the solid spin quantum magnetometer is a magnetic field sensor which is paid attention to in recent years, and the principle is to use the spin resonance characteristic of defects in solid materials, mainly diamond NV color center materials. Such materials may undergo energy level splitting under the influence of an external magnetic field. The quantum weak magnetic measurement technology developed by combining the technology with the MEMS micromachining technology, quantum control and other technologies is an important component of the quantum sensing technology. Main technical difficulties such as a diamond NV color center light field modulation technology, a microwave circular polarization technology and the like are studied at home and abroad. The focus is on improving the capability of microstrip antenna to propagate microwave energy, and thus improving fluorescence contrast. At present, the antenna mode commonly used for the diamond NV color center comprises a surface waveguide of an antenna and an electrode plated on the surface of a diamond sample, and has the defects that the antenna structure on the surface is connected to an external PCB (printed circuit board) through the electrode, the process is complex, the electrode is easy to damage, and microwaves with high power cannot be born; or the diamond is stuck on the upper surface of the PCB after the antenna structure is manufactured by copper coating on the PCB, the defect is that the diamond is above the PCB, the energy transmitted by the microwave of the antenna is on the lower surface of the diamond, and the laser directly excites the upper surface of the diamond, so that the microwave power loss is larger. Therefore, it is necessary to invent a microwave antenna which has a simple process and can be applied to diamond NV color center solid spin reflection type fluorescence collection.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the surface waveguide microstrip antenna applied to solid color center spinning, which can reduce the loss of microwave power while ensuring higher excitation power of the antenna.
The surface waveguide microstrip antenna comprises an outer layer antenna, an intermediate layer antenna and an inner layer antenna, wherein the outer layer antenna and the intermediate layer antenna are positioned on a substrate, and the inner layer antenna is positioned on diamond;
a blind hole is formed in the substrate, the diamond is nested in the blind hole, and the upper surface of the diamond is flush with the upper surface of the substrate;
the outer layer antenna, the middle layer antenna and the inner layer antenna are all square ring-shaped and are nested in sequence from outside to inside; the side parts of the outer layer antenna and the middle layer antenna are respectively provided with an opening, and the openings of the outer layer antenna and the middle layer antenna are positioned at the opposite sides of the antennas;
the outer layer antenna, the middle layer antenna and the inner layer antenna form a surface waveguide microstrip antenna together, and the resonant frequency is 2.87GH z; electromagnetic waves are transmitted between the surface waveguide microstrip antennas in a radiation mode, and resonance is generated.
Further, the depth of the blind hole of the substrate is equal to the thickness of the diamond, and the shape of the blind hole is the same as that of the diamond, so that the diamond is just embedded into the blind hole, and the upper surface of the diamond is flush with the upper surface of the substrate.
Further, the outer layer antenna, the middle layer antenna and the inner layer antenna are all copper wires.
Further, the diamond is a diamond with an NV color center.
Further, the outer layer antenna and the middle layer antenna are connected through a connecting wire.
Further, the inner layer antenna is formed in the middle of the upper surface of the diamond in a deposition mode.
The beneficial effects of the invention are as follows:
the invention adopts the technical means of combining the antenna on the substrate and the antenna on the diamond surface, solves the technical defect of lower power caused by the antenna on the substrate, and also solves the defect of complex process caused by the need of externally connecting a flying wire to the substrate due to copper plating on the diamond surface. The designed surface waveguide microstrip antenna has higher power and higher uniformity of a microwave magnetic field, and does not need extra flying lines. The mounting process is simple, and the diamond sample with the NV color center is only required to be embedded into the blind hole of the substrate. The method can be applied to a reflective fluorescence acquisition diamond NV color center measuring system, can reduce the antenna transmitting power and improve the signal-to-noise ratio of the sensor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an apparatus for a surface waveguide microstrip antenna applied to solid color center spin according to an embodiment of the present invention.
Fig. 2 is an exploded view of a surface waveguide microstrip antenna for solid color center spin according to one embodiment of the present invention.
The reference numerals of fig. 1 are listed below: 1. a substrate, 2, an outer layer antenna; 3. an intermediate layer antenna; 4. a diamond; 5. an inner layer antenna; 101. and (5) a blind hole.
Detailed Description
The objects and effects of the present invention will become more apparent from the following detailed description of the preferred embodiments and the accompanying drawings, it being understood that the specific embodiments described herein are merely illustrative of the invention and not limiting thereof.
As shown in FIG. 1, the invention provides a surface waveguide microstrip antenna applied to solid color center spin, which can be applied to a reflective diamond NV magnetic field measurement system. As shown in fig. 1, the surface waveguide microstrip antenna includes an outer layer antenna 2, an intermediate layer antenna 3, and an inner layer antenna 5 on a diamond 4, which are disposed on a substrate 1.
As shown in fig. 2, the diamond 4 is a diamond with NV color center, and the substrate 1 is a PCB board. The middle part of the substrate 1 is provided with a blind hole 101 which is light-tight, the size of the blind hole is the same as that of the diamond, and the diamond 4 is embedded in the blind hole, so that the upper surface of the diamond 4 and an antenna on the substrate 1 are on the same plane. An inner layer antenna 5 is plated on the upper surface of the diamond 4. The outer layer antenna 2, the middle layer antenna 3 and the inner layer antenna 5 are all square ring-shaped and are nested in sequence from outside to inside; one side of each of the outer layer antenna 2 and the middle layer antenna 3 is provided with an opening, and the openings of the outer layer antenna 2 and the middle layer antenna 3 are positioned at the opposite sides of the respective antennas. The upper ends of the outer layer antenna 2 and the middle layer antenna 3 are connected through a connecting wire. The outer layer antenna, the middle layer antenna and the inner layer antenna form a surface waveguide microstrip antenna together and are used for exciting the upper surface of the diamond sample, and the resonance frequency is 2.87GHz; electromagnetic waves are transmitted between the surface waveguide microstrip antennas in a radiation mode, and resonance is generated.
Because diamond upper surface and antenna surface are in same horizontal plane, so the excitation efficiency of NV color center is high, and diamond embeds in square ring's inside, and the microwave magnetic field has higher degree of consistency. The method can be applied to a reflective fluorescence acquisition diamond NV color center measuring system, and can reduce antenna power and improve the signal-to-noise ratio of a sensor.
The optimal size of the antenna is obtained by a scanning parameter method, and the parameters are input simultaneously during scanning, and the range is set and calculated respectively. As one of the implementation modes, the main parameters of the antenna size comprise the thickness of the substrate of 0.9mm, the side length of the outer layer antenna of 9.1mmm, the line width of 0.8mm and the width of the opening of 0.3mm; the side length of the middle layer antenna is 6.5mm, the line width is 0.5mm, and the width at the opening is 0.5mm; the side length of the inner layer antenna is 2.4mm, the line width is 0.8mm, the distance between the outer layer antenna and the middle layer antenna is 0.5mm, the distance between the middle layer antenna and the inner layer antenna is 1.5mm, the width of the connecting line between the middle layer antenna and the outer layer antenna is 0.6mm, and the length and the width of the leading-out part are 2.5mm and 0.6mm; the length of the weld was 9.3mm and the width was 1.6mm.
It will be appreciated by persons skilled in the art that the foregoing description is a preferred embodiment of the invention, and is not intended to limit the invention, but rather to limit the invention to the specific embodiments described, and that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for elements thereof, for the purposes of those skilled in the art. Modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The surface waveguide microstrip antenna applied to solid color center spin is characterized by comprising an outer layer antenna, an intermediate layer antenna and an inner layer antenna, wherein the outer layer antenna and the intermediate layer antenna are positioned on a substrate, and the inner layer antenna is positioned on diamond;
a blind hole is formed in the substrate, the diamond is nested in the blind hole, and the upper surface of the diamond is flush with the upper surface of the substrate;
the outer layer antenna, the middle layer antenna and the inner layer antenna are all square ring-shaped and are nested in sequence from outside to inside; the side parts of the outer layer antenna and the middle layer antenna are respectively provided with an opening, and the openings of the outer layer antenna and the middle layer antenna are positioned at the opposite sides of the antennas;
the outer layer antenna, the middle layer antenna and the inner layer antenna form a surface waveguide microstrip antenna together, and the resonance frequency is 2.87GHz; electromagnetic waves are transmitted between the surface waveguide microstrip antennas in a radiation mode, and resonance is generated.
2. The surface waveguide microstrip antenna applied to solid color center spinning of claim 1, wherein the depth of the blind hole of the substrate is equal to the thickness of the diamond, and the shape of the blind hole is the same as the shape of the diamond, so that the diamond is just embedded in the blind hole, and the upper surface of the diamond is flush with the upper surface of the substrate.
3. The surface waveguide microstrip antenna for solid color center spinning of claim 1, wherein said outer layer antenna, said middle layer antenna, and said inner layer antenna are all copper wires.
4. The surface waveguide microstrip antenna for solid color center spin as claimed in claim 1, wherein said diamond is a diamond with NV color center.
5. The surface waveguide microstrip antenna for solid color center spin according to claim 1, wherein the outer layer antenna and the middle layer antenna are connected by a connecting wire.
6. The surface waveguide microstrip antenna for solid color center spin as claimed in claim 1, wherein said inner layer antenna is formed in the middle of the upper surface of said diamond by deposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623502.0A CN116247437A (en) | 2022-12-16 | 2022-12-16 | Surface waveguide microstrip antenna applied to solid color center spin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623502.0A CN116247437A (en) | 2022-12-16 | 2022-12-16 | Surface waveguide microstrip antenna applied to solid color center spin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116247437A true CN116247437A (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211623502.0A Pending CN116247437A (en) | 2022-12-16 | 2022-12-16 | Surface waveguide microstrip antenna applied to solid color center spin |
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| Country | Link |
|---|---|
| CN (1) | CN116247437A (en) |
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2022
- 2022-12-16 CN CN202211623502.0A patent/CN116247437A/en active Pending
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