阅读说明：本技术 一种波束分离器 (Wave beam separator ) 是由 梁家军 于 2020-11-12 设计创作，主要内容包括：本发明公开一种波束分离器,包括N个介质透镜和馈源,其中,N≥2,N为自然数；所述介质透镜为实心的球形或半球形,且所述介质透镜由均匀的绝缘材料制成,所述馈源的主辐射方向朝向所述介质透镜的球心。能够将单一馈源辐射出的电磁波波束在空间中分离为多个子波束,通过改变介质透镜的排列位置以及介质透镜和馈源之间的距离可以调整子波束的辐射方向和区域；介质透镜是由绝缘的介质材料形成的实心球,由馈源所辐射的电磁波经本方案中的介质透镜可转换为平面电磁波,获得笔形、扇形或其他形状的指向性波束,从而提高了增益,并且还具有旁瓣和后瓣小,方向性好等优点,经介质透镜可以使分离后的子波束更为聚集,使其增益和方向性更好。(The invention discloses a beam splitter, which comprises N dielectric lenses and a feed source, wherein N is more than or equal to 2 and is a natural number; the medium lens is solid spherical or hemispherical, and is made of uniform insulating material, and the main radiation direction of the feed source faces to the spherical center of the medium lens. The electromagnetic wave beam radiated by a single feed source can be separated into a plurality of sub-beams in space, and the radiation direction and the radiation area of the sub-beams can be adjusted by changing the arrangement position of the dielectric lens and the distance between the dielectric lens and the feed source; the medium lens is a solid ball formed by insulating medium materials, electromagnetic waves radiated by the feed source can be converted into plane electromagnetic waves through the medium lens in the scheme to obtain pen-shaped, fan-shaped or other directional beams, so that the gain is improved, and the medium lens has the advantages of small side lobe and back lobe, good directivity and the like.)

1. A beam splitter is characterized by comprising N dielectric lenses (1) and a feed source (2), wherein N is more than or equal to 2, and is a natural number;

the medium lens (1) is solid spherical or hemispherical, the medium lens (1) is made of uniform insulating materials, and the main radiation direction of the feed source (2) faces to the spherical center of the medium lens (1).

2. A beam splitter as claimed in claim 1, characterised in that the distance between the feed (2) and the dielectric lens (1) is between 0.6 λ and 12 λ, said λ being the wavelength of the electromagnetic waves radiated by the feed (2).

3. A beam splitter as claimed in claim 1, in which the dielectric constant of the dielectric material is in the range 2 to 5.

4. A beam splitter according to claim 1, characterised in that the centres of the dielectric lenses (1) are all in the same horizontal plane.

5. A beam splitter according to claim 1, characterised in that the radii of the dielectric lenses (1) are all equal.

6. A beam splitter according to claim 1, characterised in that the radii of the dielectric lenses (1) are unequal.

7. A beam splitter according to claim 1, characterised in that the projection surfaces of a plurality of said dielectric lenses (1) are partially overlapping;

or the projection surfaces of a plurality of dielectric lenses (1) are not overlapped.

8. A beam splitter according to claim 1, comprising N dielectric lenses (1) and a feed source (2), where N ≧ 2, N being a natural number;

the dielectric lens (1) is solid spherical or hemispherical, the dielectric lens (1) is made of multiple layers of insulating materials with different dielectric constants, and the main radiation direction of the feed source (2) faces to the spherical center of the dielectric lens (1).

9. A beam splitter according to claim 1 or 8, characterised in that the dielectric lens (1) is provided with a number of openings (13), the openings (13) extending from the surface of the dielectric lens (1) to the centre of its sphere and decreasing in diameter from the outside to the inside of the openings (13).

10. A beam splitter as claimed in claim 1 or 8, in which the insulating material comprises a photopolymer resin, red wax, ABS, PLA, nylon, PMI or ceramic.

Technical Field

The invention relates to the technical field of beam separation, in particular to a beam splitter.

Background

The beam separation means that the electromagnetic wave radiated by the radiation source is converted into two or more beams of electromagnetic waves which are transmitted to different directions, and the electromagnetic wave radiated by the single feed source can be converted into multiple beams, so that the beam separation equipment is convenient to use, and can be widely applied to various electric products, such as radars or antennas.

The existing beam separation equipment has a complex structure and high production cost, and correspondingly, the matching of internal and external parts needs to be very precise during design so as to ensure the beam separation effect; moreover, the conventional beam separation equipment has poor radiation effect, low gain, low transmission rate of the sub-beam electromagnetic waves and poor use feeling of the sub-beam obtained by separating the electromagnetic waves.

Disclosure of Invention

The invention mainly aims to provide a beam splitter, and aims to solve the technical problems that the existing beam splitting equipment is complex in structure and the radiation effect of split sub-beams is poor.

In order to achieve the purpose, the invention provides a beam splitter, which comprises N dielectric lenses and a feed source, wherein N is more than or equal to 2, and N is a natural number;

the medium lens is solid spherical or hemispherical, and is made of uniform insulating material, and the main radiation direction of the feed source faces to the spherical center of the medium lens.

Preferably, the distance between the feed source and the dielectric lens is 0.6 lambda-12 lambda, and lambda is the wavelength of the electromagnetic wave radiated by the feed source.

Preferably, the dielectric constant of the insulating material is 2-5.

Preferably, the centers of the spheres of a plurality of the dielectric lenses are all on the same horizontal plane.

Preferably, the radii of the plurality of dielectric lenses are all equal.

Preferably, the radii of the respective dielectric lenses are different.

Preferably, projection surfaces of a plurality of the dielectric lenses partially overlap;

or the projection surfaces of a plurality of dielectric lenses are not overlapped.

Preferably, the device comprises N medium lenses and a feed source, wherein N is more than or equal to 2 and is a natural number;

the dielectric lens is solid spherical or hemispherical, and is made of multiple layers of insulating materials with different dielectric constants, and the main radiation direction of the feed source faces to the spherical center of the dielectric lens.

Preferably, the dielectric lens is provided with a plurality of openings, the openings extend from the surface of the dielectric lens to the spherical center of the dielectric lens, and the diameters of the openings are gradually reduced from the outside to the inside.

Preferably, the insulating material comprises a photopolymer resin, red wax, ABS, PLA, nylon, PMI or ceramic.

The beam splitter of the invention has the following beneficial effects: the beam splitter is formed by combining more than 2 solid medium lenses and the feed source, an electromagnetic wave beam radiated by the single feed source can be separated into a plurality of sub-beams in space, and the radiation direction and the area of the sub-beams can be adjusted by changing the arrangement position of the medium lenses and the distance between the medium lenses and the feed source; the dielectric lens is a solid sphere formed of an insulating dielectric material; after the electromagnetic wave energy radiated by the feed source passes through the dielectric lens array group, the maximum energy emission position of the sub-beams is positioned on the connecting line of the aperture center of the radiation source and each sphere center. The electromagnetic wave radiated by the feed source can be converted into plane electromagnetic wave through the dielectric lens in the scheme to obtain a pen-shaped, fan-shaped or other-shaped directional beam, so that the gain is improved, and the method has the advantages of small side lobe and back lobe, good directivity and the like.

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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of a first embodiment of a dielectric lens of the beam splitter of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of a dielectric lens of the beam splitter of the present invention;

FIG. 3 is a schematic diagram of a third embodiment of a dielectric lens of the beam splitter of the present invention;

FIG. 4 is a schematic view showing the internal structure of a third embodiment of a dielectric lens of the beam splitter of the present invention;

FIG. 5 is a schematic diagram of a first embodiment of a beam splitter in accordance with the present invention;

FIG. 6 is a schematic diagram of a second embodiment of a beam splitter in accordance with the present invention;

FIG. 7 is a schematic diagram of a third embodiment of the beam splitter of the present invention;

FIG. 8 is a front view of a fourth embodiment of the beam splitter of the present invention;

FIG. 9 is a side view of a fourth embodiment of the beam splitter of the present invention;

fig. 10 is a radiation pattern of a feed of the beam splitter of the present invention at phi 0deg and phi 90 deg;

FIG. 11 is a radiation pattern of a dielectric lens of the beam splitter of the present invention at phi 0deg and phi 90 deg;

FIG. 12 is a graph comparing the gain effects of a dielectric lens made of uniform dielectric material and a dielectric lens made of dielectric material having different dielectric constants for a beam splitter according to the present invention;

FIG. 13 is a graph showing the variation trend of the gain of the feed and the dielectric lens of the beam splitter of the present invention at various distances.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Dielectric lens	13	Opening holes
11	First dielectric lens	2	Feed source
				12	Second dielectric lens

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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.

It should be noted that if directional indications such as up, down, left, right, front, and rear … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, motion, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a beam splitter. The beam splitter is used for splitting the electromagnetic wave beam emitted by the single feed source 2, and the split sub-beam still has good gain effect and electromagnetic wave transmission rate.

As shown in fig. 1 to 13, a beam splitter includes N dielectric lenses 1 and a feed source 2, where N is equal to or greater than 2, and N is a natural number;

the dielectric lens 1 is a solid sphere or hemisphere, the dielectric lens 1 is made of uniform insulating material, and the main radiation direction of the feed source 2 faces the sphere center of the dielectric lens 1.

Specifically, as shown in fig. 1 to 13, the beam splitter is formed by combining more than 2 solid dielectric lenses 1 and a feed source 2, a plurality of dielectric lenses 1 form a dielectric lens 1 array group, the number of the dielectric lenses 1 and the spatial position arrangement of the dielectric lenses 1 are changed, an electromagnetic wave beam radiated by a single feed source 2 can be separated into a plurality of sub-beams in space, and the arrangement position of the dielectric lenses 1 in space determines the emission direction of the separated beam: namely the radiation direction of the sub-beams is determined by the arrangement position of the solid spheres of the medium, the included angle theta among the sub-beams is determined by the distance between the feed source 2 and the medium lens 1 and the distance between the medium lenses 1, and when the distance between the feed source 2 and the medium lens 1 is fixed, the included angle theta among the sub-beams is gradually increased along with the increase of the distance between the medium lenses 1; when the distance between each dielectric lens 1 is fixed, the included angle theta between each sub-beam is gradually reduced along with the increase of the distance between the feed source 2 and the dielectric lens 1, so that the included angle theta between the sub-beams can be adaptively adjusted, and the final radiation area of the sub-beams is adjusted. The number of the medium lenses 1 selected in the scheme determines the number of the sub-beams after the beams are separated, the number of the sub-beams corresponds to the number of the medium lenses 1 one to one, only one feed source 2 is needed, a plurality of beams obtained after the beam splitter separation can radiate to a plurality of areas, and the coverage area is widened. The number of dielectric lens 1 in this scheme can be 2, 3, 4 or more, is the arc arrangement when a plurality of dielectric lens 1 arrange and sets up the electromagnetic wave radiation face at feed 2.

The dielectric lens 1 in the scheme is a solid ball formed by insulating dielectric materials; after the electromagnetic wave energy radiated by the feed source 2 passes through the array group of the dielectric lens 1, the maximum energy emission position of the sub-beam is positioned on the connecting line of the aperture center of the radiation source and each sphere center. The electromagnetic wave radiated by the feed source 2 can be converted into plane electromagnetic wave through the dielectric lens 1 in the scheme to obtain a pen-shaped, fan-shaped or other-shaped directional beam, so that the gain is improved, and the method also has the advantages of small side lobe and back lobe, good directivity and the like, the electromagnetic wave radiated by the feed source 2 enters the dielectric lens 1 after reaching the outer wall of the dielectric lens 1, the entered electromagnetic wave beam can be more focused through the dielectric lens 1, and the gain and the directivity are better. Therefore, the sub-beam separated by the plurality of dielectric lenses 1 still has high power, and the transmission rate of the electromagnetic wave signal in the radiation area of the sub-beam is still high. The dielectric lens 1 is preferably a regular sphere or a regular hemisphere, in which case the transmission and gain effects for electromagnetic waves are optimized.

As shown in fig. 10 to 11, the maximum gain of the radiation pattern of the single feed source 2 is only 7.07dBi, and after the dielectric lens 1 is added, the maximum gain of the electromagnetic wave reaches 22.6dBi, wherein the radius of the dielectric lens 1 is 20mm, that is, the gain effect of the dielectric lens 1 is better.

Further, the distance between the feed source 2 and the dielectric lens 1 is 0.6 lambda-12 lambda, and lambda is the wavelength of the electromagnetic wave radiated by the feed source 2. Thus, the distance between the feed source 2 and the surface of each dielectric lens 1 is controlled to be in the range of 0.6 lambda-12 lambda, wherein lambda is the wavelength corresponding to the working frequency of the electromagnetic wave, the separation effect of the sub-beams is optimal, the side lobe is low, and the corresponding gain effect is optimal.

Further, the dielectric constant of the insulating material is 2 to 5. It can be understood that when the dielectric constant of the insulating material for manufacturing the dielectric lens 1 is high, the refraction of the electromagnetic wave entering one side of the dielectric lens 1 is large, which is not beneficial to forming a stable plane wave on the other side, and the gain effect is deteriorated when the dielectric constant is greater than 5, which is inconvenient in practical use, therefore, the dielectric constant of the insulating material in the scheme is preferably within the range of 2-5, and the dielectric lens 1 is ensured to have a good gain effect and a high wireless communication propagation rate on the electromagnetic wave; when the dielectric constant is gradually increased, the gain effect of the dielectric lens 1 is not always enhanced, but a pole appears when the dielectric constant is 2.5-3, and the gain effect is the best at the moment, so that the transmission rate of electromagnetic wave communication is higher.

Further, the centers of the spheres of the plurality of dielectric lenses 1 are all on the same horizontal plane. It can be understood that, as the number of the dielectric lenses 1 increases and the positions of the spherical centers of the dielectric lenses 1 are different, the spherical centers of the dielectric lenses 1 in the present embodiment are preferably located on the same horizontal plane, which is mainly because when the dielectric lenses 1 exist, when the spherical centers of the dielectric lenses 1 are not located on the same horizontal plane, although beam separation can be achieved, the side lobes of the sub-beams are increased, which may result in poor radiation effect.

Further, the radii of the plurality of dielectric lenses 1 are all equal. The dielectric lens 1 includes a first dielectric lens 11 and a second dielectric lens 12, and the radius of the first dielectric lens 11 is equal to the radius of the second dielectric lens 12. Specifically, the present scheme provides an embodiment, in this embodiment, the dielectric lens 1 is composed of two groups of the first dielectric lens 11 and the second dielectric lens 12, and the radii of the two groups are equal, after the electromagnetic wave beam radiated by the feed source 2 passes through the first dielectric lens 11 and the second dielectric lens 12 which are uniform and equal in size, 2 groups of sub-beams are separated, and the sub-beams are radiation beams with the same gain and the same beam width; although the two sub-beams are directed differently, the rest radiation characteristics are kept consistent, and the beam splitter of the embodiment can control the transmission efficiency of the electromagnetic wave signal in each radiation range to be consistent, and maintain better transmission efficiency. In addition, the beam splitter in the scheme can be composed of 3 groups, 4 groups or more of medium lenses 1 and feed sources 2, the separated 3 groups, 4 groups or more of sub-beams have the same transmission efficiency, and the transmission efficiency of the electromagnetic wave beams in each radiation area is ensured to be higher while the radiation surface is widened.

Further, the radii of the respective dielectric lenses 1 are not equal. The dielectric lens 1 includes a first dielectric lens 11 and a second dielectric lens 12, and a radius of the first dielectric lens 11 and a radius of the second dielectric lens 12 are not equal. The scheme provides another embodiment, in which the radius of the first dielectric lens 11 is not consistent with that of the second dielectric lens 12, specifically, the radius of the first dielectric lens 11 is greater than or less than that of the second dielectric lens 12, so that the electromagnetic waves radiated by the feed source 2 can be separated into 2 groups of sub-beams with unequal power, and the sub-beams have different gains and beam widths; as shown in fig. 7, the left sub-beam is radiated by the medium lens 11 with a small radius, and the right sub-beam is radiated by the medium lens 12 with a larger radius, compared to the case where the medium lens 11 with a small radius has a lower gain than the medium lens 12 with a large radius, for example, a certain area only needs a beam with a lower transmission efficiency, and another area needs a beam with a higher transmission efficiency. Such an embodiment can be applied to the situation that different radiation and gain effects are required in different areas, and the radiation effect of the sub-beams can be adaptively adjusted. Similarly, the present solution may also adopt 3, 4 or more sets of unequal-size dielectric lenses 1 to form a dielectric lens 1 array set, and the gain effects in different radiation areas are different. By means of the different embodiments described above, the beam splitter is made possible to split the feed 2 into a plurality of sub-beams of equal power or into sub-beams of different power.

Further, the projection surface portions of the plurality of dielectric lenses 1 overlap; or, the projection surfaces of the plurality of dielectric lenses 1 do not overlap.

Thus, partial overlapping exists between the dielectric lenses 1 of the beam splitter, the overlapped area can be freely regulated, and the size of the overlapped area between the dielectric lenses 1 determines the included angle theta between the sub-beams: when the overlapping area is 0, namely, no overlapping area exists among the dielectric lenses 1, the included angle theta among the sub-beams is maximum; when the dielectric lenses 1 start to overlap, the included angle θ between the sub-beams is reduced, and the included angle θ between the sub-beams is further reduced as the overlapping area increases. The final radiation area of the beam splitter is adjusted by adjusting whether the dielectric lenses 1 are overlapped or not and the overlapping area to adjust the radiation area of each sub-beam.

Further, the device comprises N dielectric lenses 1 and a feed source 2, wherein N is more than or equal to 2 and is a natural number; the dielectric lens 1 is a solid sphere or hemisphere, and is made of multiple layers of insulating materials with different dielectric constants, and the main radiation direction of the feed source 2 faces the sphere center of the dielectric lens.

It is understood that, in addition to the single-layer uniform solid dielectric lens 1, the dielectric lens 1 in the present embodiment can be made of multiple layers of insulating materials with different dielectric constants, as shown in fig. 2, the figure shows the gain pattern of a dielectric lens 1 made of a uniform insulating material, a dielectric lens 1 made of 2 layers of insulating materials with different dielectric constants and a dielectric lens 1 made of 4 layers of insulating materials with different dielectric constants, the radius of the dielectric lens 1 is 20mm, the gain effect of 3 different dielectric lenses is different, but the gain effect for the electromagnetic wave signal is better, the user can select different dielectric lenses 1 according to the requirement, of course, the dielectric lens 1 can be made of 3 layers, 5 layers, 6 layers, etc. of materials having different dielectric constants, in addition to the 2 or 4 layers of materials having different dielectric constants described above.

As shown in fig. 12, the single-layer dielectric lens 1 and the multi-layer dielectric lens 1 have a better gain effect on radiation of electromagnetic wave beams, but compared with the multi-layer dielectric lens 1, the single-layer dielectric lens 1 is easy to manufacture, and the processing process is simpler.

As shown in fig. 13, in the case where the distance between the feed source and the dielectric lens is different, except that the gain is changed, the level values of the antenna side lobes are not uniform, and the antenna side lobe generated when the distance is 100mm is higher than that generated when the distance is 50 mm; further, the dielectric lens 1 is provided with a plurality of openings 13, the openings 13 extend from the surface of the dielectric lens 1 to the center of the sphere thereof, and the diameter of the openings 13 gradually decreases from the outside to the inside. The arrangement of the opening 13 on the dielectric lens 1 can make the electromagnetic wave beam radiated by the feed source 2 have higher gain effect and directivity. The gradual change of the equivalent dielectric constant inside the dielectric lens 1 is structurally realized.

Further, the insulating material includes photopolymer resin, red wax, ABS, PLA, nylon, PMI, or ceramic. When the photopolymer resin, the red wax, the ABS, the PLA, the nylon, the PMI or the ceramic is adopted to manufacture the medium lens 1, wherein when the photopolymer resin is adopted to manufacture the medium lens 1, the 3D printing technology can be adopted to manufacture the medium lens, the manufacturing efficiency is higher, the raw material source is wide, the production and manufacturing cost is relatively lower, the strength and the aging resistance are better, and the long service life of the medium lens 1 can be ensured after the preparation is finished. The processing of the media lens 1 can also be realized by adopting other materials or other additive manufacturing technologies, and an appropriate 3D printing material and a 3D printer can be selected according to the requirements of practical application. Meanwhile, obviously, the machining of the dielectric lens 1 can also be realized by using a common machining technology.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.