CN115133271A - Parallel double-ring magnetic coupling communication anti-interference coil antenna - Google Patents
Parallel double-ring magnetic coupling communication anti-interference coil antenna Download PDFInfo
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- CN115133271A CN115133271A CN202210962536.6A CN202210962536A CN115133271A CN 115133271 A CN115133271 A CN 115133271A CN 202210962536 A CN202210962536 A CN 202210962536A CN 115133271 A CN115133271 A CN 115133271A
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- 230000008878 coupling Effects 0.000 title claims abstract description 30
- 238000010168 coupling process Methods 0.000 title claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims abstract description 28
- 230000001788 irregular Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 17
- 230000007246 mechanism Effects 0.000 description 10
- 238000002955 isolation Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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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
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention belongs to the technical field of radio frequency, and particularly relates to a magnetic coupling communication anti-interference antenna. The invention comprises a first coil, a second coil, a third coil, and a first feed capacitor C a And a second feeding capacitance C b (ii) a One end of the second coil is connected with one end of the third coil, so that the second coil and the third coil jointly form an annular coil, one end of the first coil is connected with the closed end of the annular coil, the other end of the first coil is positioned at the opening end of the annular coil, and the first coil is connected with the first feeding port; the other end of the second coil is connected with a first feed capacitor C a And the other end of the third coil is connected with a second feed capacitor C b One end of (a); first feed capacitorC a And a second feeding capacitor C b Connecting and connecting the second feeding port; the second coil and the third coil are symmetrically distributed relative to the first coil. The structure provided by the invention can reduce self inductance, has high self-resonant frequency compared with the traditional DD coil series structure, and is easy to realize broadband communication in a high-frequency band.
Description
Technical Field
The invention belongs to the technical field of radio frequency, and particularly relates to a parallel double-ring magnetic coupling communication anti-interference coil antenna.
Background
An Inductive Coupling Power Transfer (ICPT) system can realize Power transmission without electrical connection, not only effectively avoids the problems of electric sparks, electric leakage and the like caused by abrasion and aging of a connector in the traditional plug-in Power supply, but also has the advantages of convenience, flexibility, strong environmental adaptability and the like, and is widely applied to the fields of electric automobiles, medical treatment, household appliances, 3C and the like. In order to realize the complex and accurate control of the electric equipment, the high-speed, reliable and confidential data transmission function is required to be realized while energy is transmitted, namely, the synchronous transmission of the electric energy and the data in the same medium is realized. The wireless energy transmission scene communication is realized by far field communication and near field communication, the far field communication is widely applied to various wireless electric energy transmission systems due to simplicity, but the reliability of the far field communication is lower in complex environments such as underwater detection and strong magnetic field, and the far field communication is far field radiation, so that the confidentiality is poor and the interference is easy to occur. Therefore, the near field communication is more suitable for wireless energy transmission scenes such as radars, satellites and underwater vehicles.
However, when the wireless energy transmission is high in power, the strong wireless energy transmission signal has large interference on the weak communication signal, and even can block communication.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a novel magnetic coupling communication anti-interference antenna. Compared with the traditional series structure of the DD coil, the parallel double-loop coil structure provided by the invention can reduce self inductance due to the similarity of series-parallel connection of coil inductance and series-parallel connection calculation formulas of resistance, and further, since the self-resonance frequency of the coil is inversely proportional to the half power of the inductance value, the self-resonance frequency of the parallel double-loop coil is high, broadband communication is easy to realize in a high-frequency band, and airspace unipolar low-frequency magnetic field isolation can be performed on excitation of a bipolar field. In addition, the feed capacitor is a blocking capacitor and a voltage-resistant capacitor, so that burning caused by overlarge loop induced current can be avoided, frequency domain low-frequency isolation can be performed, including loop isolation of a low-frequency unipolar magnetic field and a bipolar magnetic field, and the near-field broadband decoupling radio frequency communication based on a wireless energy transmission scene is established by suppressing interference of low-frequency wireless energy transmission strong signals.
The invention provides a magnetic coupling communication anti-interference antenna for realizing near-field broadband decoupling radio frequency communication based on a wireless energy transfer scene.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a parallel double-ring magnetic coupling communication anti-interference coil antenna is characterized by comprising a first coil, a second coil, a third coil and a first feed capacitor C a And a second feeding capacitance C b (ii) a One end of the second coil is connected with one end of the third coil, so that the second coil and the third coil jointly form a ring-shaped coil, a connection point of the second coil and the third coil is defined as a first node A, one end of the first coil is connected with the first node A, the other end of the first coil is positioned at an opening of the ring-shaped coil, and the other end of the first coil is connected with a first feeding port; the other end of the second coil is connected with a first feed capacitor C a And the other end of the third coil is connected with a second feeding capacitor C b One end of (a); first feed capacitor C a And the other end of the first and second feed capacitors C b The other end of the first node D is connected with the other end of the second node D, a connection point of the two feeding capacitors is defined as a second node D, and the second node D is connected with a second feeding port; the second coil and the third coil are symmetrically distributed relative to the first coil.
Furthermore, the first coil, the second coil and the third coil are located on the same plane.
Furthermore, the first coil, the second coil and the third coil are positioned on the same plane and positioned on the surface of an arc surface, a spherical surface or an irregular surface.
Further, the linear shape of the first coil, the second coil and the third coil is a strip line or a litz line.
Further, the first coil is of a straight line or arc line structure; the second coil and the third coil are in a single-turn or multi-turn structure.
Further, the edge of the annular coil formed by the second coil and the third coil is circular, oval, rectangular or gourd-shaped.
The magnetic coupling communication anti-interference antenna in the scheme is used for achieving decoupling communication of a magnetic coupling communication scene, and can also isolate a space-domain unipolar low-frequency magnetic field of excitation generated by the wireless energy transfer mechanism, so that near-field broadband decoupling radio frequency communication based on the wireless energy transfer scene is achieved.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a magnetic coupling communication anti-interference antenna capable of reducing interference of an energy signal to a communication signal in a wireless energy transmission scene. Compared with the traditional series structure of the DD coil, the series-parallel connection of the coil inductance and the series-parallel connection of the resistance have similar calculation formulas, the parallel double-loop coil structure provided by the invention can reduce the self inductance, and the self-resonance frequency of the coil is inversely proportional to the half power of the inductance value, so that the parallel double-loop coil has high self-resonance frequency, is easy to realize broadband communication in a high-frequency band, and can carry out space-domain unipolar low-frequency magnetic field isolation on the excitation of a bipolar field. In addition, the feed capacitor is a blocking capacitor and a voltage-resistant capacitor, so that burning caused by overlarge loop induced current can be avoided, frequency domain low-frequency isolation can be performed, including loop isolation of a low-frequency unipolar magnetic field and a bipolar magnetic field, and the near-field broadband decoupling radio frequency communication based on a wireless energy transmission scene is established by suppressing interference of low-frequency wireless energy transmission strong signals.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic coupling communication anti-interference antenna provided by the invention.
Fig. 2 is a schematic diagram of an embodiment of a decoupled radio frequency communication link based on a magnetic coupling communication scenario according to the present invention.
Fig. 3 is a schematic diagram of an embodiment of decoupling communication based on a single-polarity coil wireless energy transfer scenario proposed by the present invention.
Fig. 4 is a schematic diagram of an embodiment of decoupling communication based on a bipolar coil wireless energy transfer scenario proposed by the present invention.
Detailed Description
The invention is further explained below on the basis of the description with reference to the figures and the examples.
Example 1:
the example comprises a transmitter TX, a receiver RX, two receiving and transmitting magnetic coupling communication anti-interference antennas and a matching circuit thereof. As shown in fig. 2, the transceivers TX and RX may implement broadband radio frequency communication in a magnetic coupling scenario through a suitable matching circuit and a magnetic coupling communication jammer antenna. The shape and the size of the anti-interference antenna for magnetic coupling communication can be specifically designed according to the requirements of an actual communication scene. The matching circuit needs to be custom designed according to a specific antenna.
Example 2:
the present example comprises a communication mechanism which is composed of a unipolar coil energy transfer mechanism, a transmitter TX, a receiver RX, two receiving and transmitting magnetic coupling communication anti-interference antennas and a matching circuit thereof. As shown in FIG. 3, the energy transmission coupling mechanism Coil p1 And Coil p2 Being circular unipolar coils, Coil in a communicative coupling mechanism A1 And Coil A2 The antenna is a common-caliber parallel double-loop magnetic coupling communication anti-interference coil antenna, the feed capacitor of the antenna is a blocking capacitor and a voltage-resistant capacitor, and the antenna can be used for isolating a low-frequency unipolar magnetic field generated by an energy transfer mechanism and protecting the coil antenna so as to realize anti-interference broadband decoupling radio frequency communication in a low-frequency wireless energy transfer scene based on a unipolar coil. The shape and the size of the magnetic coupling communication anti-interference antenna can be specifically designed according to the requirements of an actual communication scene. The matching circuit needs to be custom designed according to a specific antenna.
Example 3:
the system comprises an energy transfer mechanism based on a bipolar coil, a transmitter TX, a receiver RX, two receiving and transmitting magnetic coupling communication anti-interference antennas and a communication mechanism consisting of a matching circuit of the two receiving and transmitting magnetic coupling communication anti-interference antennas. As shown in FIG. 4, the energy transmission coupling mechanism Coil p1 And Coil p2 Being circular bipolar coils, Coil in a communicative coupling A1 And Coil A2 Is a parallel double-loop magnetic coupling communication anti-interference coil antenna with a common caliber, the feed capacitor of the antenna is a DC blocking capacitor,the voltage-resistant capacitor can be used for isolating a low-frequency bipolar magnetic field generated by the energy transmission mechanism and protecting the coil antenna so as to realize anti-interference broadband decoupling radio frequency communication in a low-frequency wireless energy transmission scene based on the bipolar coil. The shape and the size of the magnetic coupling communication anti-interference antenna can be specifically designed according to the requirements of an actual communication scene. The matching circuit needs to be custom designed according to a specific antenna.
The above description is only exemplary of the present invention and is not intended to limit the present invention, and any modification, replacement, or improvement made within the spirit and principle of the present invention is within the protection scope of the present invention.
Claims (6)
1. A parallel double-ring magnetic coupling communication anti-interference coil antenna is characterized by comprising a first coil, a second coil, a third coil and a first feed capacitor C a And a second feeding capacitance C b (ii) a One end of the second coil and one end of the third coil are connected, so that the second coil and the third coil jointly form a loop coil, a connection point of the second coil and the third coil is defined as a first node, one end of the first coil is connected with the first node, the other end of the first coil is positioned at an opening of the loop coil, and the other end of the first coil is connected with the first feeding port; the other end of the second coil is connected with a first feed capacitor C a And the other end of the third coil is connected with a second feeding capacitor C b One end of (a); first feed capacitor C a And the other end of the first and second feed capacitors C b The other end of the first node is connected, a connection point of the two feeding capacitors is defined as a second node, and the second node is connected with a second feeding port; the second coil and the third coil are symmetrically distributed relative to the first coil.
2. A parallel dual-ring magnetically-coupled communication antijam coil antenna according to claim 1, wherein said first coil, second coil and third coil are located on the same plane.
3. A parallel dual-ring magnetic coupling communication anti-jamming coil antenna according to claim 1, wherein the first coil, the second coil and the third coil are located on the same plane and located on the surface of an arc surface, a spherical surface or an irregular surface.
4. A parallel dual-ring magnetically-coupled communication antijam coil antenna according to claim 1, wherein the linear form of said first, second and third coils is strip line or litz line.
5. A parallel dual-ring magnetically-coupled communication anti-jamming coil antenna according to claim 1, wherein the first coil is of a linear or arc structure; the second coil and the third coil are in a single-turn or multi-turn structure.
6. A parallel dual-ring magnetically-coupled communication anti-jamming coil antenna according to claim 1, wherein the rim of the loop formed by the second coil and the third coil is circular, elliptical, rectangular or gourd-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210962536.6A CN115133271A (en) | 2022-08-11 | 2022-08-11 | Parallel double-ring magnetic coupling communication anti-interference coil antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210962536.6A CN115133271A (en) | 2022-08-11 | 2022-08-11 | Parallel double-ring magnetic coupling communication anti-interference coil antenna |
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| CN115133271A true CN115133271A (en) | 2022-09-30 |
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| US6837438B1 (en) * | 1998-10-30 | 2005-01-04 | Hitachi Maxell, Ltd. | Non-contact information medium and communication system utilizing the same |
| US20110009057A1 (en) * | 2009-07-07 | 2011-01-13 | Nokia Corporation | Wireless charging coil filtering |
| CN102857262A (en) * | 2011-06-27 | 2013-01-02 | 索尼公司 | Communication apparatus and communication system |
| CN103430426A (en) * | 2011-03-07 | 2013-12-04 | 株式会社爱德万测试 | Transmission coil for wireless power transmission |
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| US20170040691A1 (en) * | 2015-08-07 | 2017-02-09 | Nucurrent, Inc. | Single structure multi mode antenna for wireless power transmission using magnetic field coupling having an internal switch circuit |
| US20170040694A1 (en) * | 2015-08-07 | 2017-02-09 | Nucurrent, Inc. | Electrical system incorporating a single structure multimode antenna for wireless power transmission using magnetic field coupling |
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-
2022
- 2022-08-11 CN CN202210962536.6A patent/CN115133271A/en active Pending
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| CN103430426A (en) * | 2011-03-07 | 2013-12-04 | 株式会社爱德万测试 | Transmission coil for wireless power transmission |
| CN102857262A (en) * | 2011-06-27 | 2013-01-02 | 索尼公司 | Communication apparatus and communication system |
| CN103765675A (en) * | 2012-06-04 | 2014-04-30 | 株式会社村田制作所 | Antenna device and communication terminal device |
| US20170040691A1 (en) * | 2015-08-07 | 2017-02-09 | Nucurrent, Inc. | Single structure multi mode antenna for wireless power transmission using magnetic field coupling having an internal switch circuit |
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