CN112671117A - Source-term electromagnetic energy flow generating device with circumferential poynting vector characteristics - Google Patents
Source-term electromagnetic energy flow generating device with circumferential poynting vector characteristics Download PDFInfo
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Abstract
The invention provides a source electromagnetic energy flow generating device with a circumferential poynting vector characteristic, which overcomes the limitation that the poynting vector of the traditional electromagnetic wave only has a linear component, and the energy attenuation is inversely proportional to the square of the distance.
Description
Technical Field
The invention relates to the technical field of electromagnetism, in particular to a source item electromagnetic energy flow generating device with circumferential poynting vector characteristics.
Background
In 1864, maxwell, a british scientist, based on the results of the previous study on electromagnetic phenomena, established a complete electromagnetic wave theory, that is, all characteristics of electromagnetic waves can be derived by maxwell equations.
Based on maxwell's equations, the electric field and the magnetic field in the conventional electromagnetic wave are mutually excited, interdependent and time-varying, and are mutually causal, and are transmitted in space to form the electromagnetic wave.
In 1884, poynting established the concept of energy flux density, i.e., if the electric field strength somewhere in space was
Magnetic field strength of
The fluence of the electromagnetic field is then
However, the physical community has no consensus on the physical meaning of the "electromagnetic field" formed by the electric and magnetic fields that coexist. Fimann in his "fiyman Physics lecture" (r.p. Feynman, The Feynman spectra on Physics (1964) vol.2,27,11.) mentions a model where a stationary magnetic needle is placed next to a stationary electron. In this static system, the electric and magnetic fields are independent and independent of each other, and it can be seen that the poynting vector therein is not zero, but surrounds the needle in a ring, implying that there is a flow of energy in this system, contrary to the perception that "static field energy flow is zero".
An article in the american journal of physics (e.m.puch, g.e.pugh, am.j.phys.35,153-156 (1967)) states that the poynting vector in a static field, where similar electric and magnetic fields coexist, is not insignificant, but rather important for maintaining the conservation of angular momentum of the system. And momentum and kinetic energy exist simultaneously, so that electromagnetic energy flow also exists in the symbiotic electric field and magnetic field.
However, the electric field and the magnetic field in the conventional electromagnetic wave are interdependent, and the poynting vector of the conventional electromagnetic wave always has only a linear component in a uniform medium and propagates along a straight line.
Disclosure of Invention
In view of the above, in order to solve the above problems, the present invention provides a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic, and the technical solution is as follows:
a source term electromagnetic energy flow generating device having a circumferential poynting vector characteristic, the source term electromagnetic energy flow generating device comprising: a signal source, a matching structure and a radio frequency structure;
the signal source is used for outputting electromagnetic wave energy with fixed frequency and fixed power;
the matching structure is used for feeding a radio frequency structure to maximize the electromagnetic wave energy;
the radio frequency structure is used for generating a radial electric field and a magnetic field in a direction vertical to a horizontal plane, or is used for generating a radial magnetic field and an electric field in a direction vertical to the horizontal plane, or is used for generating a large-size vortex electromagnetic field.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a source electromagnetic energy flow generating device with circumferential poynting vector characteristics, which comprises: a signal source, a matching structure and a radio frequency structure; the signal source is used for outputting electromagnetic wave energy with fixed frequency and fixed power; the matching structure is used for feeding a radio frequency structure to maximize the electromagnetic wave energy; the radio frequency structure is used for generating a radial electric field and a magnetic field in a direction vertical to a horizontal plane, or is used for generating a radial magnetic field and an electric field in a direction vertical to the horizontal plane, or is used for generating a large-size vortex electromagnetic field. The source electromagnetic energy flow generating device can concentrate most of the energy delivered to the device within the active area and substantially attenuate outside the boundaries of the active area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIGS. 2-4 are schematic views of different orientations of an electric field generating apparatus according to an embodiment of the present invention;
FIGS. 5-6 are schematic views of different orientations of a magnetic field generating device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a radio frequency structure according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a conventional electromagnetic wave propagation method;
FIG. 9 is a schematic diagram of a generation manner of a source term electromagnetic energy flow with a circumferential poynting vector characteristic;
fig. 10 is a schematic structural diagram of a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of an electric field distribution according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a magnetic field distribution provided by an embodiment of the present invention;
fig. 13 is a HFSS simulation diagram of the electric field intensity distribution under a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 14 is a line graph showing the distribution of electric field strength with radial distance for a single electric field source in a source term electromagnetic energy current generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 15 is a HFSS simulation diagram of magnetic field intensity distribution under a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 16 is a line graph of magnetic field strength distribution with radial distance for a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
fig. 17 is a HFSS simulation diagram of a single-field-source downhill-pointing vector time-averaged distribution in a source-term electromagnetic-energy-current generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
fig. 18 is a line graph of the time average of a single-field power downhill imperting vector along with the radial distance in a source term electromagnetic energy current generating device with a circumferential imperting vector feature according to an embodiment of the present invention;
FIG. 19 is a diagram of an HFSS simulation of the electric field intensity distribution at a single magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
FIG. 20 is a line graph showing the distribution of electric field strength with radial distance for a single magnetic field source in a source term electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 21 is a HFSS simulation diagram of magnetic field intensity distribution under a single magnetic field source in a source term electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
FIG. 22 is a line graph showing the distribution of magnetic field strength with radial distance for a single magnetic field source in a source term electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 23 is a HFSS simulation diagram of a single magnetic field source downhill pointing vector time-averaged value distribution in a source term electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
fig. 24 is a line graph of the time average value of a single magnetic field source downhill pointing vector along with the radial distance in a source term electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
fig. 25 is a HFSS simulation diagram of the electric field intensity distribution under the combination of the electric field source magnetic field source and the electric field intensity distribution in the source electromagnetic energy flow generating device with the circumferential poynting vector feature according to the embodiment of the present invention;
fig. 26 is a line graph of distribution of electric field strength with radial distance in combination with an electric field source in an electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 27 is a HFSS simulation diagram of magnetic field intensity distribution under the combination of an electric field source magnetic field source and an electric field magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
fig. 28 is a line graph of magnetic field strength distribution with radial distance for the combination of the source magnetic field source of the electric field in the source electromagnetic energy flow generating device with circumferential poynting vector characteristics according to the embodiment of the present invention;
fig. 29 is a HFSS simulation diagram of the time-averaged distribution of the downhill pointing vector associated with the electric field source magnetic field source in the source electromagnetic energy current generating device having the circumferential pointing vector feature according to the embodiment of the present invention;
fig. 30 is a line graph of the distribution of the time average value of the electric field source magnetic field in combination with the downhill pointing vector along the radial distance in the source electromagnetic energy current generating device having the circumferential pointing vector feature according to the embodiment of the present invention;
FIGS. 31-33 are schematic views of alternative configurations of different orientations of a radio frequency structure according to embodiments of the present invention;
FIG. 34 is a simulation diagram of HFSS showing the electric field intensity distribution of a single-field source in an alternative source-term electromagnetic-energy-current generating device with a circumferential poynting-vector feature according to an embodiment of the present invention;
FIG. 35 is a line graph showing the distribution of the electric field strength with radial distance for a single electric field source in an alternative source term electromagnetic energy current generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 36 is a diagram of an HFSS simulation of magnetic field strength distribution at a single electric field source in an alternative source-term electromagnetic energy current generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
FIG. 37 is a line graph showing the distribution of magnetic field strength with radial distance for a single electric field source in an alternative source electromagnetic energy current generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 38 is a HFSS simulation diagram of a single-field-source downhill-pointing vector time-averaged distribution in a source-term electromagnetic-energy-current generating device with a circumferential-pointing vector feature according to an embodiment of the present invention;
FIG. 39 is a line graph of the time average of a single-field source downhill pointing vector along with the radial distance in another source term electromagnetic energy current generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
FIG. 40 is a simulation diagram of an HFSS simulation of the electric field intensity distribution at a single magnetic field source in an apparatus for generating a source electromagnetic energy flow with a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 41 is a line graph showing the distribution of electric field strength with radial distance for a single magnetic field source in another source electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 42 is a diagram of an HFSS simulation of magnetic field intensity distribution at a single magnetic field source in an apparatus for generating source-term electromagnetic energy flow with a circumferential poynting vector feature according to an embodiment of the present invention;
FIG. 43 is a line graph showing the distribution of magnetic field strength with radial distance for a single magnetic field source in an alternative source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention;
fig. 44 is a HFSS simulation diagram of a single magnetic field source downhill pointing vector time-averaged distribution in another source electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
FIG. 45 is a line graph of time-averaged downhill pointing vector versus radial distance for a single magnetic field source in an alternative source electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention;
FIG. 46 is a simulation plot of HFSS of electric field intensity distribution under the combination of the source magnetic field source and the electric field intensity distribution in the source electromagnetic energy flow generating device with circumferential poynting vector characteristics according to another embodiment of the present invention;
fig. 47 is a line graph showing the distribution of the electric field strength with radial distance in combination with the source of the electric field in the source electromagnetic energy current generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention;
FIG. 48 is a diagram of an HFSS simulation of magnetic field intensity distribution under the combination of an electric field source and a magnetic field source in an electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention;
fig. 49 is a line graph of magnetic field strength distribution with radial distance in combination with an electric field source in an electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to another source item provided by an embodiment of the present invention;
fig. 50 is a HFSS simulation diagram of the time-averaged distribution of the electric field source magnetic field source in combination with the downhill pointing vector in another source electromagnetic energy current generating apparatus with a circumferential pointing vector feature according to an embodiment of the present invention;
fig. 51 is a line graph of the distribution of the time average value of the electric field source magnetic field in combination with the downhill pointing vector along the radial distance in another source electromagnetic energy current generating device having the circumferential pointing vector characteristic according to an embodiment of the present invention;
FIGS. 52-55 are schematic views of different orientations of another RF structure provided in accordance with an embodiment of the present invention;
FIG. 56 is a schematic diagram of the energy flow density results of an HFSS simulation of a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The source term electromagnetic energy flow in the invention is explained as follows:
according to maxwell's system of equations:
wherein the electric field
Including electric fields generated by charge sources
And an electric field contributed by the variation of the magnetic field
Also, magnetic field
Comprising a magnetic field generated by a current source
And a magnetic field contributed by the variation of the electric field
Then it can order
Thereby obtaining:
decomposing the system of equations can obtain:
source term field equation set:
wave term field equation set:
that is, by dividing the field into a portion directly contributed by the charge source, the current source, and a portion contributed by the variation of the field, the source term field and the wave term field are referred to, respectively.
The electromagnetic energy flow is further classified according to the classification of the electromagnetic field.
Source item electromagnetic energy flow:
the source item electromagnetic energy flow is generated only by the source item field.
Cross term electromagnetic energy flow:
the cross-term power flow is generated by the combination of the source term field and the wave term field.
Wave term electromagnetic energy flow:
the wave item electromagnetic energy flow is only generated by a wave item field, the corresponding wave item electromagnetic energy flow is electromagnetic waves, wave item electric fields and wave item magnetic fields which are mutually orthogonal are possessed at every moment in the transmission process, and the ratio of electric field mode values to magnetic field mode values is a fixed value.
The attenuation of the wave term electromagnetic energy flow with distance follows the inverse square ratio.
Based on the background art, the electric field and the magnetic field in the conventional electromagnetic wave are interdependent, and the poynting vector of the electromagnetic wave always only has a linear component in a uniform medium and propagates along a straight line.
In this regard, the present invention provides a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic that concentrates a substantial portion of the energy delivered to the device within an active region and substantially attenuates outside the boundaries of the active region.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention.
The source term electromagnetic energy flow generating device comprises: the device comprises a signal source A, a matching structure B and a radio frequency structure C;
the signal source A is used for outputting electromagnetic wave energy with fixed frequency and fixed power;
the matching structure B is used for feeding a radio frequency structure C for maximizing the electromagnetic wave energy;
the radio frequency structure C is used for generating a radial electric field and a magnetic field in a direction vertical to the horizontal plane, or is used for generating a radial magnetic field and an electric field in a direction vertical to the horizontal plane, or is used for generating a large-size vortex electromagnetic field.
In this embodiment, the matching system B is used for feeding the rf structure C to maximize the electromagnetic wave energy and reduce the reflection, and the matching system B at least includes a wilkinson power divider, an electric field generating device matching system, and a magnetic field generating device matching system.
The Wilkinson power divider equally distributes the energy provided by the signal source to the matching system of the electric field generating device and the matching system of the magnetic field generating device.
The matching system of the electric field generating device and the matching system of the magnetic field generating device are microstrip circuits formed by a plurality of lumped parameter circuit elements such as adjustable capacitors, inductors, resistors and the like, and the electric field generating device and the magnetic field generating device in the radio frequency structure are in a matching state according to the numerical values of input impedance parameter adjusting elements of respective devices.
The radio frequency structure C comprises at least an electric field generating device and a magnetic field generating device, and is used for generating a radial electric field and a magnetic field in a direction perpendicular to a horizontal plane or generating a radial magnetic field and an electric field in a direction perpendicular to the horizontal plane in order to make the final poynting vector be distributed in a circumferential direction.
Meanwhile, in order to apply the principle of the eddy electromagnetic field to the cellular mobile communication, the eddy electromagnetic field generating device is used for generating a large-size eddy electromagnetic field.
The source electromagnetic energy flow generating device can concentrate most of the energy delivered to the device within the active area and substantially attenuate outside the boundaries of the active area.
Further, according to the above embodiment of the present invention, when the radio frequency structure C is used for generating a radial electric field and a magnetic field in a direction perpendicular to a horizontal plane, the radio frequency structure C includes: an electric field generating device and a magnetic field generating device.
Referring to fig. 2-4, fig. 2-4 are schematic structural diagrams of different orientations of an electric field generating apparatus according to an embodiment of the present invention.
The electric field generating apparatus includes: the metal rod comprises a vertically placed metal rod 1 and a horizontally placed metal ring 5 surrounding the metal rod, wherein the metal rod 1 is located at the center of the metal ring 5.
The electric field generating apparatus further includes: a first feeding port 6.
The metal ring 5 is connected with one end of the first feed port through a lead, and the metal rod 1 is connected with the other end of the first feed port.
The first feed port is located at the bottom of the metal bar 1.
Namely, the plurality of wires 4 are distributed in a rotational symmetry manner by taking the metal rod 1 as an axis, one end of each wire is connected to the metal ring 5, and the other end of each wire is converged at the bottom of the metal rod 1, so that the electric field generating device can be fed between the converging point of the wires and the bottom of the metal rod 1, the symmetry of the generated electric field is ensured, and the unnecessary magnetic field generated by the electric field generating device is reduced.
The first feed port is positioned between the wire collection point and the bottom of the metal rod 1 and is connected with an electric field generating device matching system in the matching structure.
It should be noted that the metal ring 5 is parallel to the horizontal plane, the radius of the metal ring is related to the frequency of electromagnetic energy, and the wire diameter is far smaller than the radius.
It can be seen that the electric field generating apparatus is rotationally symmetric and can generate a radial electric field from the metal rod 1 to the metal ring 5.
Referring to fig. 5-6, fig. 5-6 are schematic structural diagrams of different orientations of a magnetic field generating device according to an embodiment of the present invention.
The magnetic field generating device includes: dipole antennas 2 and 3 bent in a circular shape and a second feeding port;
one of the arms 2 of the dipole antenna is connected to one end of the second feeding port 5, and the other arm 3 is connected to the other end of the second feeding port 8.
The second feed port 8 is located between the two arms of the dipole antenna and is connected to the matching system of the magnetic field generating device in the matching structure.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a radio frequency structure according to an embodiment of the present invention.
The metal loop 5 is located in the same plane as the dipole antennas 2 and 3.
The arm length of the dipole antenna is related to the electromagnetic energy frequency, the arm width is far smaller than the arm length, and the magnetic field generating device is similar to an electrical small ring added with lumped parameter capacitance and can generate a magnetic field perpendicular to the horizontal plane direction.
By generating the radial electric field and the magnetic field in the direction vertical to the horizontal plane, an electromagnetic field with the characteristic of circumferential poynting vector can be obtained in the effective region.
In this embodiment, referring to fig. 8, fig. 8 is a schematic diagram illustrating a propagation manner of a conventional electromagnetic wave, wherein the conventional electromagnetic wave has a propagation characteristic in which electric field energy and magnetic field energy are coupled to each other. In a traditional electromagnetic wave generating device, namely an antenna, the phase difference between an electric field and a magnetic field of an electromagnetic field generated in a near field region is 90 degrees, and the time average value of poynting vector is 0; in the far field, the electric field is in phase with the magnetic field, and the absolute value of the time average of the poynting vector is inversely proportional to the square of the distance, radially outward.
Referring to fig. 9, fig. 9 is a schematic diagram illustrating a generation manner of a source term electromagnetic energy flow with a circumferential poynting vector characteristic.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a source electromagnetic energy flow generating device having a circumferential poynting vector characteristic according to an embodiment of the present invention.
Referring to fig. 11, fig. 11 is a schematic view of an electric field distribution according to an embodiment of the present invention.
Referring to fig. 12, fig. 12 is a schematic diagram of a magnetic field distribution according to an embodiment of the present invention.
The description is given by way of specific examples:
as shown in fig. 2 to 7, the foam perforated cylinder 7 is made of foam material, the upper surface of the foam perforated cylinder is tightly attached to the xoy plane, the center of the upper surface coincides with the origin, the inner radius R0 is 2mm, the outer radius R is 500mm, and the height H is 154 mm.
Optionally, the metal bar 1 is made of copper material, and the position of the copper material coincides with the z-axis, and the radius R0 is 2mm, the length H1 above the xoy plane is 250mm, and the length H2 below the xoy plane (approximate to the height of the foam perforated cylinder) is 150 mm.
Optionally, the metal ring 5 is made of a copper material, and is also located in the xoy plane, the circle center of the metal ring coincides with the origin, the outer radius R1 is 498.5mm, the ring width Wd is 3mm, and the thickness Δ w is 0.1 mm.
Optionally, two jumper wires 4 are taken as an example, the materials of the wires are copper materials, the lengths of the wires are both L1 + H652.5 mm, one end of one jumper wire is connected with a position where the metal ring 5 intersects with the negative half axis of the x axis, and the jumper wire is bridged to the first feed port 6 at the bottom of the metal rod 1 along the surface of the foam perforated cylinder; and one end of the other cross-over lead is connected with the position where the metal ring 5 intersects with the positive half shaft of the x axis, and is cross-over connected to a first feed port 6 at the bottom of the metal rod 1 along the cylindrical surface with holes of the foam.
Optionally, the second feeding port 8 is located at the positive x-axis half axis, and is 525.5mm from the origin.
Optionally, the left antenna 2 of the dipole antenna is made of a copper material, is located in the xoy plane, and is in a circular arc shape, the center of the circle coincides with the origin, the outer radius Rout is 530mm, the width Wd is 3mm, and the thickness Δ w is 0.1 mm. One end of which is connected to the second feed port 8 and sweeps clockwise θ out through 270 °.
Optionally, the right arm 3 of the dipole antenna is made of a copper material, is located in the xoy plane, and is in a circular arc shape, the center of the circle coincides with the origin, the outer radius Rout is 525mm, the width Wd is 3mm, and the thickness Δ w is 0.1 mm. One end of which is connected to the second feed port 8 and scans counterclockwise θ in 270 °.
In this embodiment, the effective area is within 100mm above and below the xoy plane, and the effective area is within a cylindrical area with a radial distance of 25mm to 500mm from the center, and has the characteristic of electrically small size.
Based on the electric field generating device in this embodiment, in the case where the electric field generating device has symmetry, the directions of the currents flowing through the two halves of the metal coil are opposite to each other, and the directions of the currents flowing through the conductive wires are also opposite to each other, so that the useless magnetic field generated by the electric field generating device is small in the effective region.
Based on the magnetic field generating device in this embodiment, since the structure is similar to an electrical ringlet incorporating lumped-parameter capacitance, in the effective region, the generated useless electric field is also small.
Therefore, the electric field in the active area is substantially provided by the electric field generating means and the magnetic field is substantially provided by the magnetic field generating means.
In this case, the electric field and the magnetic field are generated by independent sources, so that they can be in phase and the rule that the ratio of the intensity of the two in the electromagnetic wave is specified as the wave impedance is not followed. This makes it possible to design two source input powers such that the time-averaged pointing vector in the active region of the present invention is much larger than that in the near field region of the conventional electromagnetic wave generating apparatus.
Further, outside the effective area, the electric field strength and the magnetic field strength of the embodiment of the invention are inversely proportional to the square of the radial distance, so that the time average of the poynting vector is inversely proportional to the fourth power of the radial distance. This also shows that the embodiments of the present invention are fast attenuated outside the effective region compared to the conventional electromagnetic wave generating device.
Referring to fig. 13-18, fig. 13 is a HFSS simulation diagram of the electric field intensity distribution of a single-field power source in a source-term electromagnetic energy current generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 14 is a line graph of electric field intensity distribution with radial distance under a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 15 is a HFSS simulation diagram of magnetic field intensity distribution under a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 16 is a line graph showing the distribution of magnetic field strength with radial distance under a single electric field source in a source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 17 is a HFSS simulation diagram of a single-field-source downhill-pointing vector time-average distribution in a source-term electromagnetic-energy-current generating device with a circumferential-pointing vector feature according to an embodiment of the present invention. Fig. 18 is a line graph of the time average value of the downhill imperting vector of the single-field power supply along with the radial distance in the source term electromagnetic energy current generating device with the circumferential imperting vector characteristic according to the embodiment of the invention.
Referring to fig. 19-24, fig. 19 is a HFSS simulation diagram of the electric field intensity distribution under a single magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 20 is a line graph showing the distribution of the electric field strength with radial distance under a single magnetic field source in a source term electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 21 is a HFSS simulation diagram of magnetic field intensity distribution under a single magnetic field source in a source term electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 22 is a line graph showing the distribution of magnetic field strength with radial distance under a single magnetic field source in a source term electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 23 is a HFSS simulation diagram of a single magnetic field source downhill pointing vector time-averaged distribution in a source term electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention. Fig. 24 is a line graph of the time average value of the downhill pointing vector of a single magnetic field source along with the radial distance in a source term electromagnetic energy flow generating device with the characteristic of the circumferential pointing vector according to an embodiment of the present invention.
Referring to fig. 25-30, fig. 25 is a HFSS simulation diagram of electric field intensity distribution under the combination of an electric field source and a magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 26 is a line graph of distribution of electric field strength with radial distance in combination with an electric field source in an electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 27 is a HFSS simulation diagram of magnetic field intensity distribution under the combination of an electric field source and a magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 28 is a line graph of magnetic field strength distribution with radial distance under the combination of an electric field source and a magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 29 is a HFSS simulation diagram of the time-averaged distribution of the downhill pointing vector associated with the electric field source magnetic field source in the source electromagnetic energy current generating device having the circumferential pointing vector feature according to the embodiment of the present invention. Fig. 30 is a line graph of the distribution of the electric field source magnetic field source in combination with the time average value of the downhill pointing vector along the radial distance in the source electromagnetic energy current generating device having the circumferential pointing vector characteristic according to the embodiment of the present invention.
Based on the simulation results, when the electric field source or the magnetic field source is independently turned on, the electric field or the magnetic field is mainly provided, the useless magnetic field or electric field generated by the electric field source or magnetic field source is relatively small, and the time average value of the generated poynting vector is also small.
In contrast, in the case where the electric field source and the magnetic field source are simultaneously turned on, the electric field or the magnetic field is generated in a direction equivalent to the case where the electric field source or the magnetic field source is separately turned on.
Further, under the condition that the electric field source and the magnetic field source are simultaneously turned on, the time average of the generated poynting vector has obvious circumferential characteristics.
Moreover, the algebraic sum of the radial distance between the effective area and the magnetic field source is far greater than that when the electric field source or the magnetic field source is independently turned on in the effective area with the radial distance of 25mm-500 mm; outside the effective range where the radial distance exceeds 500mm, the time average of the poynting vector decays rapidly with increasing radial distance.
Further, according to the above embodiments of the present invention, when the radio frequency structure is used for generating a radial magnetic field and an electric field perpendicular to a horizontal plane, the radio frequency structure includes: an electric field generating device and a magnetic field generating device.
Referring to fig. 31-33, fig. 31-33 are schematic views of different orientations of another rf structure according to an embodiment of the present invention.
The electric field generating apparatus includes: a first metal plate 9 and a second metal plate 10 which are oppositely arranged, and a third feeding port 13, and other feeding ports 14;
the first metal plate 9 is connected to one end of the third feeding port 13 through a conducting wire 12, and the second metal plate 10 is connected to the other end of the third feeding port 13 through a conducting wire 12;
the magnetic field generating device includes: a first solenoid 11 and a second solenoid 11 disposed opposite to each other in the vertical direction, and a fourth feeding port and a fifth feeding port 15;
both ends of the first solenoid 11 are respectively connected to both ends of the fourth feeding port, and both ends of the second solenoid 11 are respectively connected to both ends of the fifth feeding port.
The first and second solenoids 11 and 11 disposed in opposition are located between the first and second metal plates 9 and 10;
wherein the first metal plate 9 and the second metal plate 10 have the same shape and are both circular;
the centers of the first metal plate 9 and the second metal plate 10 are located on the axes of the first solenoid 11 and the second solenoid 11.
In the embodiment of the present invention, the first solenoid and the second solenoid are the same two solenoids, and therefore, the same reference numeral 11 is used for reference.
In this embodiment, the electric field generating means is composed of two circular metal plates and a plurality of wires. Two ends of the wire are respectively connected with the upper and the lower circular metal plates, and feed ports 13 and 14 are arranged in the middle of the wire. The corresponding number of wires can be arranged according to actual requirements.
The distance between the two circular metal plates is slightly larger than the maximum distance between the two oppositely arranged solenoids, and the centers of the two circular metal plates are located on the axis of the solenoid.
The whole device is rotationally symmetrical, and finally an electric field perpendicular to the horizontal plane is formed.
The magnetic field generating device consists of two solenoids which are arranged in a butting mode and are respectively fed after being connected into the one-to-two power divider through a feed source.
The magnetic field generating device is rotationally symmetrical, and finally a radial magnetic field is formed in an effective area between the two solenoids.
By simultaneously generating a radial magnetic field and an electric field in a direction vertical to a horizontal plane, an electromagnetic field with circumferential poynting vector characteristics can be obtained in an effective region.
The following description is given by way of specific examples:
fig. 31-33, including but not limited to the use of foam mounting brackets (not shown) to secure two vertical solenoids and two circular metal plates to ensure stability of the overall device.
Optionally, the radius of the two circular metal plates is 200 mm.
Alternatively, the two circular metal plates include, but are not limited to, a PCB with a fully copper-clad surface.
The two circular metal plates are horizontally arranged, and the circle centers of the two circular metal plates are connected and perpendicular to the horizontal plane.
Optionally, the feeding of the two circular metal plates is completed by two sets of conducting wires which are symmetrical about the z-axis, and the symmetrical arrangement aims to reduce the interference magnetic field of the electric field generating device and make the electric field distribution more uniform.
Optionally, the material of wire is the copper material, and each wire all divide into the triplex, and wherein the extension of circular metal sheet is corresponded to two parts, and another part corresponds the connecting portion of vertical direction, and length H is 300 mm.
It should be noted that the purpose of the extended feeding design is to keep the interfering electromagnetic field generated by the feeding line away from the effective area, so as to achieve better distribution of the electric field and the magnetic field in the effective area.
Further, the two solenoids of the magnetic field generating apparatus have a particularity that since a reverse current occurs at some position in a general solenoid of a non-electric small size under a time-varying excitation source, the magnetic field that can be generated by the solenoids is greatly restricted.
Furthermore, the embodiment of the invention carries out reverse winding design on the solenoid at a specific position, thereby greatly improving the magnetic field generated by the solenoid.
Also, a good radial magnetic field of the active area cannot be generated by one solenoid alone, and therefore, providing two solenoids disposed opposite each other (two solenoids symmetrical about the xoy plane) achieves a good radial magnetic field in the active area.
Alternatively, the solenoid has a radius of 50mm and a thread pitch of 15 mm.
In the embodiment of the invention, the effective area is a circular surface with the radius of 250mm in the middle of two round metal plates.
Referring to fig. 34-39, fig. 34 is a HFSS simulation diagram of the electric field intensity distribution of a single-field source in an alternative source-term electromagnetic energy current generating device with a circumferential poynting vector feature according to an embodiment of the present invention. Fig. 35 is a line graph showing the distribution of the electric field strength with radial distance under a single electric field source in another source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 36 is a HFSS simulation diagram of magnetic field intensity distribution under a single electric field source in another source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 37 is a line graph showing the distribution of magnetic field strength with radial distance for a single electric field source in an alternative source electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 38 is a HFSS simulation diagram of a single-field-source downhill-pointing vector time-average distribution in a source-term electromagnetic-energy-current generating device with a circumferential-pointing vector feature according to an embodiment of the present invention. Fig. 39 is a line graph of the time average value of a single-field source downhill inditing vector along with the radial distance in another source term electromagnetic energy current generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention.
Referring to fig. 40-45, fig. 40 is a HFSS simulation diagram of the electric field intensity distribution under a single magnetic field source in another source electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 41 is a line graph showing the distribution of the electric field strength with radial distance under a single magnetic field source in another source electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 42 is a HFSS simulation diagram of magnetic field intensity distribution under a single magnetic field source in another source-term electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to an embodiment of the present invention. Fig. 43 is a line graph showing the distribution of magnetic field strength with radial distance under a single magnetic field source in another source term electromagnetic energy flow generating device with circumferential poynting vector characteristics according to an embodiment of the present invention. Fig. 44 is a HFSS simulation diagram of a single magnetic field source downhill pointing vector time-averaged distribution in another source electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention. Fig. 45 is a line graph of the time-averaged value of the downhill pointing vector of a single magnetic field source along with the radial distance in another source electromagnetic energy flow generating device with a circumferential pointing vector feature according to an embodiment of the present invention.
Referring to fig. 46-51, fig. 46 is a simulation diagram of HFSS of electric field intensity distribution under the combination of an electric field source and a magnetic field source in a source electromagnetic energy flow generating device with a circumferential poynting vector feature according to another embodiment of the present invention. Fig. 47 is a line graph of the distribution of the electric field strength with radial distance in combination with the source of the electric field in the source electromagnetic energy flow generating device with circumferential poynting vector characteristics according to another embodiment of the present invention. Fig. 48 is a HFSS simulation diagram of magnetic field intensity distribution under the combination of an electric field source and a magnetic field source in an electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to another embodiment of the present invention. Fig. 49 is a line graph of magnetic field strength distribution with radial distance under the combination of an electric field source and a magnetic field source in an electromagnetic energy flow generating device with a circumferential poynting vector characteristic according to another embodiment of the present invention. Fig. 50 is a HFSS simulation diagram of the time-averaged distribution of the downhill pointing vector associated with the electric field source magnetic field source in the source electromagnetic energy current generating device with the circumferential pointing vector feature according to the embodiment of the present invention. Fig. 51 is a line graph of the distribution of the electric field source magnetic field source in combination with the time average value of the downhill pointing vector along the radial distance in another source electromagnetic energy current generating device with the circumferential pointing vector characteristic according to an embodiment of the present invention.
The effective region is a ring having an outer diameter of 250mm and an inner diameter of 100mm, but in order to observe the attenuation tendency of the poynting vector outside the effective region, a ring having an outer diameter of 400mm and an inner diameter of 100mm is taken in the HFSS simulation chart and the line graph.
Based on the simulation results, it can be known that a good circumferential poynting vector is realized in a circular ring with an outer diameter of 250mm, i.e., in an effective region, and the time average value of the poynting vector rapidly attenuates with the increase of the radial distance outside the effective region.
Further, according to the above embodiment of the present invention, when the radio frequency structure is used for generating a large-size eddy electromagnetic field, the radio frequency structure includes: a power divider 30 and electric and magnetic field generating means are equally divided by one N.
Referring to fig. 52-55, fig. 52-55 are schematic views of different orientations of another radio frequency structure according to an embodiment of the present invention.
The electric field and magnetic field generating device comprises: n identical independent units arranged in a circle;
each of the independent units includes: the magnetic field generating subunit and the electric field generating subunit are oppositely arranged;
wherein the magnetic field generating subunit includes: a first substrate;
the upper surface and the lower surface of the first substrate are both provided with m microstrip line structures with common endpoints, and the included angle between every two adjacent microstrip line structures is 360 degrees/m;
the microstrip line structures on the upper surface of the first substrate and the lower surface of the first substrate are in mirror symmetry;
the electric field generating subunit includes: a second substrate;
the upper surface and the lower surface of the second substrate are respectively provided with a microstrip line structure which extends outwards along the radial direction and inwards along the radial direction;
the one-to-N equal-division power divider is used for feeding N independent units.
The independent unit further comprises:
the metal plate is arranged on one side, away from the magnetic field generating subunit, of the electric field generating subunit;
the metal plate is used for reflecting an electromagnetic field.
The independent unit further comprises:
a power divider disposed between the magnetic field generating subunit and the electric field generating subunit;
the one-half power divider is used for dividing the power of the one-N power divider into two parts, namely the magnetic field generating subunit and the electric field generating subunit.
For example, the radio frequency structure under this embodiment includes: a sixteen-part power divider and an electric field and magnetic field generating device.
The electric field and magnetic field generating device includes: sixteen identical independent units in a ring arrangement, i.e. sixteen input ports, are thus fed in conjunction with a one-to-sixteen equal power divider.
It should be noted that the one-sixteen equal power divider requires matching of the input port with the source, and matching of the output port and the electric field with the input port of the magnetic field generating device.
As can be seen from fig. 52-55, the electric field and magnetic field generating device are composed of sixteen identical independent units arranged in a circle, and each independent unit has a three-layer structure.
The first layer is an independent magnetic field generating subunit, the upper surface of the first layer is formed by five times of rotation of a similar J-shaped microstrip line structure around a vertex, and the rotation is 60 degrees each time; the structure of the lower surface and the structure of the upper surface are in mirror symmetry and then integrally rotate by 60 degrees.
The feeding mode of the structure adopts a coaxial feeding mode, the upper surface structure is connected with the inner core, the lower surface structure is connected with the outer shaft, so that the current directions of the elbow parts of the J-shaped microstrip line structures on the upper surface and the lower surface are the same, the currents of the straight line parts of the J-shaped microstrip line structures are opposite, and the formed overall structure can be similar to an independent current ring with the same phase.
According to antenna theory, the magnetic field generated in the loop by the in-phase current loop is vertical to the horizontal plane.
The second layer is an independent electric field generating subunit, the structure of the second layer is a wire antenna, the wire antenna is also arranged on the upper surface and the lower surface of the second substrate, the feeding mode is the same as that of the magnetic field generating subunit, the arrangement direction is along the radial direction, and for the wire antenna with the whole length shorter than the wavelength, the electric field generated by the wire antenna is parallel to the wire antenna, namely, the electric field is along the radial direction.
And a bisection power divider is arranged between the magnetic field generating subunit and the electric field generating subunit of each independent unit and is used for equally dividing sixteen times of power to be fed into the magnetic field generating subunit and the electric field generating subunit.
Therefore, an electromagnetic field with the characteristics of circumferential poynting vector and the magnetic field direction perpendicular to the horizontal plane and the electric field direction along the radial direction is obtained.
The third layer is a metal plate for reflecting the electromagnetic field and preventing the electromagnetic field from radiating downwards so as to reduce energy loss.
It should be noted that the three-layer structure includes, but is not limited to, the PMMA frame 29 is used as the fixing structure, and the sixteen independent units are also connected and fixed by the frame.
The following description is given by way of specific examples:
as shown in fig. 52-55, the first and second substrates include, but are not limited to, PCB boards. The PCB is made of FR-4 material and has a thickness of 3 mm.
The two edges of the base plate are in the shape of an arc, the widths of the upper arc and the lower arc are 468.22mm and 702.33mm respectively, and the radial length is 600 mm.
The line width of the microstrip line structure similar to the J shape is 13mm, the distance from the tail end to the central position of the microstrip line structure similar to the J shape is 257.91mm, and the length of the feeder line is 54.6 mm.
Note that the horizontal pitch of the ends of the J-shaped microstrip line structures on the upper and lower surfaces is 12 mm.
Based on the second substrate, the line width of the line antenna on the upper and lower surfaces thereof is 5mm, the line length of the upper surface is 243.5mm, and the line length of the lower surface is 133.5 mm.
The vertical distance between the first substrate and the second substrate was 100mm, and the vertical distance between the first substrate and the lowermost metal plate was 250 mm.
Referring to fig. 56, fig. 56 is a schematic diagram illustrating the energy flow density results of HFSS simulation of a source term electromagnetic energy flow generating device with circumferential poynting vector characteristics according to an embodiment of the present invention.
As can be seen from fig. 56, the energy flow is constrained to the surface of the device, decays rapidly with increasing distance, and the direction of the energy flow is circumferential.
According to the description, the limitation that the traditional poynting vector of the electromagnetic wave is only a linear component, and the energy attenuation is inversely proportional to the square of the distance is overcome, the generation device with the circumferential poynting vector characteristic is designed based on the poynting vector distribution design concept of coexistence of the electric field and the magnetic field, most of energy transmitted to the device can be concentrated in an effective region, the controllability of the electromagnetic field/electromagnetic energy flow is improved, and meanwhile, the size of the region can be larger than the wavelength, and the generation device is still formed in the large-size range.
The device can be applied to relevant fields of electromagnetism, including the fields of communication, wireless energy transmission and the like, particularly in communication, the same frequency interference to receiving ends of other areas can be obviously reduced, the error rate is reduced, the multiplexing rate of frequency is improved, the capacity and the quality of cellular mobile communication are greatly improved, and the device has wide application space.
The source electromagnetic energy flow generating device with circumferential poynting vector characteristics provided by the invention is described in detail above, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A source term electromagnetic energy flow generating device having a circumferential poynting vector characteristic, the source term electromagnetic energy flow generating device comprising: a signal source, a matching structure and a radio frequency structure;
the signal source is used for outputting electromagnetic wave energy with fixed frequency and fixed power;
the matching structure is used for feeding a radio frequency structure to maximize the electromagnetic wave energy;
the radio frequency structure is used for generating a radial electric field and a magnetic field in a direction vertical to a horizontal plane, or is used for generating a radial magnetic field and an electric field in a direction vertical to the horizontal plane, or is used for generating a large-size vortex electromagnetic field.
2. The apparatus of claim 1, wherein the radio frequency structure, when configured to generate a radial electric field and a magnetic field in a direction perpendicular to a horizontal plane, comprises: an electric field generating device and a magnetic field generating device;
the electric field generating apparatus includes: the metal ring comprises a metal rod which is vertically placed and a metal ring which is horizontally placed and surrounds the metal rod, wherein the metal rod is positioned at the center of the metal ring;
the electric field generating apparatus further includes: a first feed port;
the metal ring is connected with one end of the first feed port through a lead, and the metal rod is connected with the other end of the first feed port;
the magnetic field generating device includes: a dipole antenna bent in a circular shape and a second feed port;
one arm of the dipole antenna is connected with one end of the second feeding port, and the other arm of the dipole antenna is connected with the other end of the second feeding port.
3. The source electromagnetic energy current generating device of claim 2, wherein the first feed port is located at a bottom of the metal rod.
4. The source electromagnetic energy current generating device of claim 2, wherein the second feed port is located between two arms of the dipole antenna.
5. The source electromagnetic energy current generating device of claim 2, wherein the metal loop is in the same plane as the dipole antenna.
6. The apparatus of claim 1, wherein the radio frequency structure, when configured to generate a radial magnetic field and an electric field in a direction perpendicular to a horizontal plane, comprises: an electric field generating device and a magnetic field generating device;
the electric field generating apparatus includes: the first metal plate and the second metal plate are oppositely arranged, and the third feed port is arranged;
the first metal plate is connected with one end of the third feed port through a lead, and the second metal plate is connected with the other end of the third feed port through a lead;
the magnetic field generating device includes: first and second solenoids provided opposite to each other in the vertical direction, and fourth and fifth feeding ports;
two ends of the first solenoid are respectively connected with two ends of the fourth feeding port, and two ends of the second solenoid are respectively connected with two ends of the fifth feeding port.
7. The source electromagnetic energy flow generating device of claim 6, wherein the first and second oppositely disposed solenoids are located between the first and second metal plates;
the first metal plate and the second metal plate are the same in shape and are circular;
the centers of the first metal plate and the second metal plate are located on the axes of the first solenoid and the second solenoid.
8. The apparatus of claim 1, wherein the rf structure is configured to generate a large-size eddy electromagnetic field, the rf structure comprising: a power divider and an electric field and magnetic field generating device are divided into N parts;
the electric field and magnetic field generating device comprises: n identical independent units arranged in a circle;
each of the independent units includes: the magnetic field generating subunit and the electric field generating subunit are oppositely arranged;
wherein the magnetic field generating subunit includes: a first substrate;
the upper surface and the lower surface of the first substrate are both provided with m microstrip line structures with common endpoints, and the included angle between every two adjacent microstrip line structures is 360 degrees/m;
the microstrip line structures on the upper surface of the first substrate and the lower surface of the first substrate are in mirror symmetry;
the electric field generating subunit includes: a second substrate;
the upper surface and the lower surface of the second substrate are respectively provided with a microstrip line structure which extends outwards along the radial direction and inwards along the radial direction;
the one-to-N equal-division power divider is used for feeding N independent units.
9. The source electromagnetic energy flow generating device of claim 8, wherein the stand-alone unit further comprises:
the metal plate is arranged on one side, away from the magnetic field generating subunit, of the electric field generating subunit;
the metal plate is used for reflecting an electromagnetic field.
10. The source electromagnetic energy flow generating device of claim 8, wherein the stand-alone unit further comprises:
a power divider disposed between the magnetic field generating subunit and the electric field generating subunit;
the one-half power divider is used for dividing the power of the one-N power divider into two parts, namely the magnetic field generating subunit and the electric field generating subunit.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB663869A (en) * | 1947-10-31 | 1951-12-27 | Standard Telephones Cables Ltd | Improvements in or relating to ultra high frequency electron discharge apparatus |
| WO2013191576A1 (en) * | 2012-06-22 | 2013-12-27 | Samsonov Vitaly Fedorovich | Method for transmitting electromagnetic energy and device for implementing same |
| CN108281800A (en) * | 2017-12-15 | 2018-07-13 | 西安电子科技大学 | A kind of generating means of vortex electromagnetic wave |
| CN108776317A (en) * | 2018-06-12 | 2018-11-09 | 重庆大学 | A kind of cylindrical core magnetic resonance probe |
| CN110705007A (en) * | 2019-08-16 | 2020-01-17 | 北京航空航天大学 | Efficiency evaluation method of plasma vortex generator |
-
2020
- 2020-11-23 CN CN202011322445.3A patent/CN112671117A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB663869A (en) * | 1947-10-31 | 1951-12-27 | Standard Telephones Cables Ltd | Improvements in or relating to ultra high frequency electron discharge apparatus |
| WO2013191576A1 (en) * | 2012-06-22 | 2013-12-27 | Samsonov Vitaly Fedorovich | Method for transmitting electromagnetic energy and device for implementing same |
| CN108281800A (en) * | 2017-12-15 | 2018-07-13 | 西安电子科技大学 | A kind of generating means of vortex electromagnetic wave |
| CN108776317A (en) * | 2018-06-12 | 2018-11-09 | 重庆大学 | A kind of cylindrical core magnetic resonance probe |
| CN110705007A (en) * | 2019-08-16 | 2020-01-17 | 北京航空航天大学 | Efficiency evaluation method of plasma vortex generator |
Non-Patent Citations (2)
| Title |
|---|
| XUEHONG SUN ET AL.: "A Novel Multi-Modal OAM Vortex Electromagnetic Wave Microstrip Array Antenna", 《JOURNAL OF COMMUNICATIONS AND INFORMATION NETWORKS》, vol. 4, no. 4, pages 95 - 106 * |
| 雇梓軒: "非辐射式无线电磁能量传输结构研究", 《中国博士学位论文全文数据库工程科技Ⅱ辑》, no. 8, pages 042 - 73 * |
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