CN117712679A - Dual-polarized ultra-wideband vibrator - Google Patents

Abstract

The invention relates to the technical field of communication antennas, and particularly discloses a dual-polarized ultra-wideband oscillator, which comprises a logarithmic period plate, a radiation panel, a feed balun group and a feed base which are sequentially arranged from top to bottom, wherein the top surface of the logarithmic period plate is provided with a printed circuit layer; the printed circuit layer comprises a strong coupling structure positioned in the middle of the top surface of the log periodic plate and a plurality of weak coupling structures circumferentially distributed on the periphery of the strong coupling structure; the dual-polarized ultra-wideband vibrator utilizes the gaps between the strong coupling structure and the weak coupling structure on the log periodic plate and the gaps between different coupling structures to diffract the electromagnetic waves generated by the radiation panel to superimpose the surface waves of the electromagnetic waves, thereby enhancing the radiation effect of the electromagnetic waves and expanding the effective frequency band of the vibrator, so that the dual-polarized ultra-wideband vibrator can meet the use of ultra-wideband.

Description

Dual-polarized ultra-wideband vibrator

Technical Field

The application relates to the technical field of communication antennas, in particular to a dual-polarized ultra-wideband oscillator.

Background

The vibrator is used as the main radiating unit of the antenna, is an indispensable important component in the antenna, has the functions of guiding and amplifying electromagnetic waves, and makes the electromagnetic signals received by the antenna stronger.

With the application of the 3.5G frequency band, the existing antenna is changed from the original low-frequency intermediate frequency coexistence to the existing environment where the low, medium and high frequency bands coexist.

In an antenna, different oscillators used as radiating elements are required to work in different frequency bands, but the space in the antenna housing is limited, too many radiating elements cannot be added, and when different radiating elements are arranged in the antenna, mutual coupling phenomenon can occur between different radiating elements, the mutual coupling phenomenon can interfere the performance of the antenna, and then a plurality of factors which are unfavorable for the normal work of the antenna are caused.

In view of the above problems, no effective technical solution is currently available.

Disclosure of Invention

The purpose of the application is to provide a dual polarization ultra wideband oscillator, so as to meet the use requirement of a wide frequency band based on a single oscillator and avoid the mutual coupling phenomenon of an antenna caused by the arrangement of a plurality of radiating units inside.

The application provides a dual-polarized ultra-wideband oscillator, which comprises a logarithmic period plate, a radiation panel, a feed balun group and a feed base which are sequentially arranged from top to bottom;

the top surface of the log periodic plate is provided with a printed circuit layer;

the printed circuit layer comprises a strong coupling structure positioned in the middle of the top surface of the log periodic plate and a plurality of weak coupling structures circumferentially distributed on the periphery of the strong coupling structure.

The utility model provides a dual polarization ultra wideband oscillator sets up the logarithm periodic plate in radiation panel top, utilize the clearance between strong coupling structure and the weak coupling structure on the logarithm periodic plate and the clearance between the different coupling structures to carry out the diffraction of logarithm periodic structure to the electromagnetic wave that radiation panel produced, with the surface wave of electromagnetic wave stack, thereby strengthen the radiating effect of electromagnetic wave and widen the effective frequency channel of oscillator, so that the ultra wideband oscillator of dual polarization of this application can satisfy ultra wideband and use, need not to increase the radiating element when using in the antenna and just can satisfy the user demand of ultra wideband, also avoided setting up the cross coupling phenomenon problem that a plurality of radiating arrays produced, the radiation performance of antenna has been ensured.

The dual-polarized ultra-wideband vibrator comprises a plurality of weak coupling structures which are circumferentially distributed on the periphery of the strong coupling structure, wherein the number of the weak coupling structures is two or more.

In this example, the printed circuit layer on the surface of the log periodic plate has a periodic geometry, and the provision of more than two weak coupling structures can add more gaps for diffracting the electromagnetic wave by the log periodic structure to further increase the plane wave superposition to enhance the radiation effect.

The outline of the strong coupling structure and the outline of the weak coupling structure are square, and the side length of the strong coupling structure is 1.5-3.5 times of the side length of the weak coupling structure.

In this example, the strong coupling structure and the weak coupling structure of the square shape can ensure that the gap between the strong coupling structure and the weak coupling structure and the size of the gap between the weak coupling structure and the weak coupling structure are distributed stably along the length direction of the gap to form a logarithmic periodic structure of periodic distribution.

The dual-polarized ultra-wideband vibrator, wherein the distance between adjacent weak coupling structures is 0.1-0.2 times of the side length of the outline of the weak coupling structure.

The distance between the weak coupling structure and the edge of the log periodic plate is larger than the side length of the weak coupling structure.

The dual-polarized ultra-wideband vibrator, wherein the logarithmic period plate and the radiation panel are arranged at intervals, and the interval size is 0.05-0.15 times of the frequency value of the central frequency point when the dual-polarized ultra-wideband vibrator works.

The dual-polarized ultra-wideband vibrator, wherein the size and shape of the radiation panel are matched with those of the log periodic plate.

The dual-polarized ultra-wideband vibrator is characterized in that the top surface of the radiation panel is provided with a plurality of radiation arms with circumferential arrays, the radiation arms are in a central symmetry hexagon shape, and the bottom surface of the radiation panel is provided with a plurality of coupling feed surfaces which are respectively connected with the corresponding radiation arms.

The dual-polarized ultra-wideband vibrator is characterized in that a plurality of radiation arms are based on a central circumferential array of the strong coupling structure, and the corner ends close to the center of the strong coupling structure are right angles.

The dual-polarized ultra-wideband vibrator, wherein the coverage area of the radiation arm is larger than that of the strong coupling structure.

From the above, this application provides a dual polarization ultra wide band oscillator, this dual polarization ultra wide band oscillator sets up the logarithm periodic plate in radiation panel top, utilize the clearance between strong coupling structure and the weak coupling structure on the logarithm periodic plate and the clearance between the different coupling structures to carry out the diffraction of logarithm periodic structure to the electromagnetic wave that radiation panel produced, with the surface wave of electromagnetic wave superpose, thereby the radiating effect of reinforcing electromagnetic wave and the effective frequency channel of widening oscillator, so that the ultra wide band oscillator of this application can satisfy ultra wide band and use, need not to increase the radiating element when using in the antenna and just can satisfy the user demand of ultra wide band, also avoided setting up the mutual coupling phenomenon problem that a plurality of radiating arrays produced more, the radiation performance of antenna has been ensured.

Drawings

Fig. 1 is a schematic structural diagram of a dual-polarized ultra-wideband resonator according to an embodiment of the present application.

Fig. 2 is a schematic top view of a log periodic plate.

Fig. 3 is a schematic top view of a radiation panel.

Fig. 4 is a schematic bottom view of the radiation panel.

Fig. 5 is a schematic structural diagram of a plate surface of the positive electrode feeding balun.

Fig. 6 is a schematic structural diagram of another plate surface of the positive electrode feeding balun.

Fig. 7 is a schematic structural diagram of a negative polarization feed balun plate surface.

Fig. 8 is a schematic structural diagram of another plate surface of the negative polarization feed balun.

Fig. 9 is a schematic top view of the feeding base.

Fig. 10 is an H-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 1695MHz frequency points.

Fig. 11 is an E-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 1695MHz frequency points.

Fig. 12 is an H-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 2690MHz frequency points.

Fig. 13 is an E-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 2690MHz frequency points.

Fig. 14 is an H-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 3300MHz frequency points.

Fig. 15 is an E-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 3300MHz frequency points.

Fig. 16 is an H-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 4200MHz frequency points.

Fig. 17 is an E-plane direction diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application based on 4200MHz frequency points.

Fig. 18 is a VSWR voltage standing wave ratio diagram generated by the dual-polarized ultra-wideband resonator according to the embodiment of the present application.

Fig. 19 is an S12 isolation diagram of a dual-polarized ultra-wideband resonator according to an embodiment of the present application.

Reference numerals: 1. log periodic plates; 2. a radiation panel; 3. feeding balun groups; 4. a feed base; 11. a strong coupling structure; 12. a weak coupling structure; 21. a radiating arm; 22. a coupling feed surface; 31. positive electrode feed balun; 32. negative polarization feed balun; 41. a base plate; 42. a microstrip transmission line; 311. a first feeding plate; 312. a first feed balun; 313. a first coupling slit; 321. a second feeding plate; 322. a second feed balun; 323. a second coupling slit.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1-8, some embodiments of the present application provide a dual-polarized ultra-wideband oscillator, which includes a log periodic plate 1, a radiation panel 2, a feed balun group 3 and a feed base 4 sequentially disposed from top to bottom;

the top surface of the log periodic plate 1 is provided with a printed circuit layer;

the printed circuit layer includes a strong coupling structure 11 at the middle of the top surface of the log periodic plate 1 and a plurality of weak coupling structures 12 circumferentially arranged around the strong coupling structure 11.

Specifically, in the embodiment of the present application, the log periodic board 1 having the printed circuit layer is a single-sided copper-clad board, and the printed circuit layer is composed of a plurality of regular copper foils, that is, the strong coupling structure 11 and the weak coupling structure 12 are both regular-shaped copper foils.

The feeding pad 4 has a coaxial core for inputting current.

More specifically, the working principle of the dual-polarized ultra-wideband oscillator in the embodiment of the present application is as follows: the current is converted into a microstrip line through a transmission structure of the feed base 4 to be transmitted and is transmitted to the feed balun group 3, the current is transmitted to the radiation panel 2 after being coupled by the feed balun group 3, the radiation panel 2 generates energy according to the coupling current and emits the energy (electromagnetic wave) upwards to generate a radiation field, the log periodic plate 1 diffracts the radiation field in a log periodic structure, and the surface waves of the electromagnetic wave are emitted after being overlapped.

It should be noted that, a gap is formed between the strong coupling structure 11 and the weak coupling structure 12, and a gap is also formed between different weak coupling structures 12, so that energy emitted by the radiation panel 2 diffracts when passing through the gap between the strong coupling structure 11 and the weak coupling structure 12 and the gap between the weak coupling structures 12 in the log periodic plate 1, so that periodic diffraction effects are continuously superimposed, and surface waves of the energy are superimposed, so as to achieve the effects of enhancing radiation effect and widening effective frequency band.

More specifically, the intensity of the electromagnetic field generated by the radiation panel 2 gradually decreases outwards along the middle of the radiation panel 2, and the energy radiated by the electromagnetic field also gradually decreases outwards along the middle of the radiation panel 2, so that the strong coupling structure 11 is preferably arranged at a position corresponding to the middle of the radiation panel 2 in the log periodic plate 1, so that the dual-polarized ultra-wideband vibrator in the embodiment of the present application can diffract stronger energy by using a gap between the strong coupling structure 11 and the weak coupling structure 12, and diffract weaker energy by using a gap between the weak coupling structure 12 and the weak coupling structure 12.

According to the dual-polarized ultra-wideband vibrator, the log periodic plate 1 is arranged above the radiation panel 2, electromagnetic waves generated by the radiation panel 2 are subjected to log periodic structure diffraction by utilizing gaps between the strong coupling structure 11 and the weak coupling structure 12 on the log periodic plate 1 and gaps between different coupling structures, so that the surface waves of the electromagnetic waves are overlapped, the radiation effect of the electromagnetic waves is enhanced, the effective frequency band of the vibrator is widened, the dual-polarized ultra-wideband vibrator can meet the use requirement of the ultra-wideband, a radiation unit is not required to be added when the dual-polarized ultra-wideband vibrator is applied to an antenna, the use requirement of the ultra-wideband can be met, the problem of mutual coupling phenomenon caused by multiple radiation arrays is avoided, and the radiation performance of the antenna is guaranteed.

In some preferred embodiments, the plurality of weak coupling structures 12 circumferentially arranged around the outer periphery of the strong coupling structure 11 are doubled or more.

Specifically, the printed circuit layer on the surface of the log periodic plate 1 has a periodic geometry, and more than two weak coupling structures 12 can be arranged to increase more gaps for diffracting the electromagnetic wave in the log periodic structure, so as to further increase the plane wave superposition to enhance the radiation effect.

More specifically, in the embodiment of the present application, considering that the space for mounting the dipole in the antenna is limited, the weak coupling structure 12 is preferably doubled, the first weak coupling structure 12 is circumferentially arranged on the outer periphery of the strong coupling structure 11, and the second weak coupling structure 12 is circumferentially arranged on the outer periphery of the first weak coupling structure 12.

In some embodiments, the outline of the strong coupling structures 11 and the weak coupling structures 12 are each one of circular, rectangular, regular triangular, or other regular polygons.

In some preferred embodiments, the outline of the strong coupling structure 11 and the weak coupling structure 12 are square, and the side length of the strong coupling structure 11 is 1.5-3.5 times the side length of the weak coupling structure 12.

Specifically, in this embodiment, the strong coupling structure 11 and the weak coupling structure 12 of a square shape can ensure that the size of the gap between the strong coupling structure 11 and the weak coupling structure 12 and the gap between the weak coupling structure 12 and the weak coupling structure 12 are distributed stably along the length direction of the gap to form a logarithmic periodic structure of periodic distribution.

More specifically, to ensure that the surface of the log periodic plate 1 can form an accurate log periodic structure, the side length of the strong coupling structure 11 should be the sum of the side lengths of the plurality of weak coupling structures 12 and the gap sizes between the corresponding weak coupling structures 12, for example, the side length of the strong coupling structure 11 is the sum of the side lengths of two weak coupling structures 12 and the gap sizes between the two weak coupling structures 12, and for example, the side length of the strong coupling structure 11 is the sum of the side lengths of three weak coupling structures 12 and the two gap sizes between the weak coupling structures 12.

In some preferred embodiments, the distance between adjacent weakly coupled structures 12 is 0.1-0.2 times the side length of the profile of the weakly coupled structure 12.

Specifically, the distance between adjacent weakly coupled structures 12 is the gap size, and setting the gap size to be 0.1-0.2 times the side length of the profile of the weakly coupled structure 12 enables effective log periodic structure diffraction of energy.

More specifically, as shown in fig. 2, the distance between the strong coupling structure 11 and the adjacent weak coupling structure 12 (first heavy weak coupling structure 12) and the distance between the adjacent weak coupling structures 12 are equal, so that the log periodic plate 1 can form a log periodic structure of an overall uniform periodic distribution.

In some preferred embodiments, the distance of the weak coupling structure 12 from the edge of the log periodic plate 1 is greater than the side length of the weak coupling structure 12.

Specifically, the electromagnetic field generated by the edge portion of the radiation panel 2 is weaker, and the energy radiated by the electromagnetic field is smaller, so that the weak coupling structure 12 is not required to be arranged near the edge of the log periodic plate 1, and the distance between the weak coupling structure 12 and the edge of the log periodic plate 1 is set to be larger than the side length of the weak coupling structure 12, so that the manufacturing cost of the dual-polarized ultra-wideband vibrator in the embodiment of the application is saved.

In some preferred embodiments, the log periodic plate 1 and the radiation panel 2 are arranged at intervals, and the intervals are 0.05-0.15 times of the frequency value of the central frequency point when the dual-polarized ultra-wideband vibrator works.

Specifically, in the embodiment of the present application, the log-periodic plate 1 is preferably fixedly connected to the radiation panel 2 through a spacer (not shown in the drawing), so that the log-periodic plate 1 and the radiation panel 2 are spaced by the spacer, so that a space of a desired size is provided therebetween.

More specifically, as shown in fig. 1, a plurality of positioning holes for mounting the fixing posts are provided on the log periodic plate 1 and the radiation panel 2.

More specifically, in the related art, the height of the oscillator is generally the length of a quarter wavelength corresponding to the center frequency point when the oscillator works, the operation effect of the oscillator is affected by the excessively large interval between the log periodic plate 1 and the radiation panel 2, the diffraction effect of the log periodic structure of the oscillator is affected by the excessively small interval between the log periodic plate 1 and the radiation panel 2, and under experimental verification, when the interval is set to a value (unit is mm) 0.05-0.15 times of the frequency value of the center frequency point when the dual-polarized ultra-wideband oscillator works, the surface wave superposition of energy can be ensured on the premise that the operation effect of the dual-polarized ultra-wideband oscillator of the embodiment is not affected, so as to achieve the effects of enhancing the radiation effect and widening the effective frequency range.

In some preferred embodiments, the size and shape of the radiating panel 2 matches the size and shape of the log periodic plate 1.

Specifically, in this embodiment, the strong coupling structure 11 is disposed in the middle of the log periodic plate 1, and the size and shape of the radiation panel 2 are matched with those of the log periodic plate 1, so that the difficulty in manufacturing the log periodic plate 1 can be reduced, the strong coupling structure 11 can be ensured to face the middle of the radiation panel 2, and the weak coupling structure 12 can be circumferentially arranged around the strong coupling structure 11 along the electromagnetic field weakening direction, so that appropriate diffraction can be performed according to the intensity of energy generated by the radiation panel 2.

In some preferred embodiments, the top surface of the radiation panel 2 has a plurality of radiation arms 21 in a circumferential array, the radiation arms 21 have a central symmetrical hexagonal shape, and the bottom surface of the radiation panel 2 has a plurality of coupling feeding surfaces 22 respectively connected to the corresponding radiation arms 21.

Specifically, the coupling feeding surface 22 is used for receiving the current after the coupling treatment of the feeding balun group, so that the radiating arm 21 generates an electromagnetic field based on the electromagnetic induction principle to release energy.

More specifically, the radiation arms 21 are preferably 4, 4 circular arrays and the radiation arms 21 in a central symmetrical hexagonal shape can generate an electromagnetic field weakened from inside to outside, and can stably generate desired energy.

More specifically, the minimum distance between adjacent radiating arms 21 is greater than the distance between adjacent weakly coupled structures 12 and less than the side length of the weakly coupled structures 12.

More specifically, the coupling feed surface 22 has a square shape.

More specifically, the radiating arm 21 and the coupling feed face 22 are connected by a pad penetrating the radiating panel 2, to which the top of the feed balun group 3 is connected.

In some preferred embodiments, the plurality of radiating arms 21 are based on a central circumferential array of strong coupling structures 11, and the corner ends near the center of the strong coupling structures 11 are right angles.

Specifically, the corner end of the radiating arm 21 near the center of the strong coupling structure 11 is right-angled and matched with the square-shaped coupling feed surface 22, so that it can cooperate with the coupling feed surface 22 to generate a stable electromagnetic field according to the coupling current.

In some preferred embodiments, the footprint of the radiating arms 21 is larger than the footprint of the strong coupling structure 11.

Specifically, designing the coverage area of the strong coupling structure 11 to be smaller than that of the radiation arm 21 ensures that the gap between the strong coupling structure 11 and the weak coupling structure 12 can smoothly diffract the stronger energy generated in the middle of the radiation panel 2.

In some preferred embodiments, the feed balun group 3 comprises a positive polarization feed balun 31 and a negative polarization feed balun 32, and the positive polarization feed balun 31 and the negative polarization feed balun 32 are in orthogonal fixed connection at positive and negative 45 degrees.

Specifically, as shown in fig. 5 and 6, the positive feed balun 31 includes a first feed plate 311, where one plate surface of the first feed plate 311 has a first feed balun 312, and the other plate surface has metal plate surfaces on two sides and two first coupling slits 313 between the two metal plate surfaces, and the first feed balun 312 of the positive feed balun 31 can couple current for the first time and transmit the current toward the radiation panel 2 by coupling with the first coupling slits 313, and the metal plates on two sides are connected with the radiation arms 21 and the coupling feed surfaces 22 of the radiation panel 2 through bonding pads to couple the current for the second time and transmit the current to the radiation panel 2.

More specifically, as shown in fig. 7 and 8, the negatively polarized feed balun 32 includes a second feed plate 321, where one plate surface of the second feed plate 321 has a second feed balun 322, and the other plate surface has metal plate surfaces on two sides and two second coupling slits 323 between the two metal plate surfaces, and the operation principle of the negatively polarized feed balun 32 is similar to that of the positively polarized feed balun 31, and will not be repeated herein.

More specifically, the positively and negatively fed balun 31 and 32, which are fixedly connected in quadrature of plus and minus 45 °, enable the radiation arms 21 on the radiation panel 2 of the dual-polarized ultra-wideband vibrator of the embodiment of the present application as a dipole to generate current induction to form an electromagnetic field.

In some preferred embodiments, as shown in fig. 9, the feeding base 4 includes a base plate 41 and a microstrip transmission line 42 provided on the base plate 41.

Specifically, the coaxial core of the feed base 4 is connected with one end of a microstrip transmission line 42, and the other end of the microstrip transmission line 42 is connected with the bottom of the feed balun group 3.

Example 1

The embodiment discloses a dual-polarization ultra-wideband oscillator, which comprises a logarithmic period plate 1, a radiation panel 2, a feed balun group 3 and a feed base 4 which are sequentially arranged from top to bottom, wherein the top surface of the logarithmic period plate 1 is provided with a printed circuit layer, the printed circuit layer comprises a strong coupling structure 11 positioned in the middle of the top surface of the logarithmic period plate 1 and two weak coupling structures 12 circumferentially distributed on the periphery of the strong coupling structure 11, the strong coupling structure 11 and the weak coupling structures 12 are square, the strong coupling structure 11 is arranged in the middle of the top surface of the logarithmic period plate 1, the side length of the strong coupling structure 11 is 14mm, the side length of the weak coupling structure 12 is 6.5mm, and the distance between the strong coupling structure 11 and the weak coupling structure 12 and the distance between the adjacent weak coupling structures 12 are 1mm; the logarithmic period plate 1 and the radiation panel 2 are arranged at intervals, and the interval size is 0.1 time of the frequency value of the central frequency point when the dual-polarized ultra-wideband vibrator works.

Specifically, the bandwidth suitable for the dual-polarized ultra-wideband vibrator is an ultra-wideband of 1710-4200 MHz, and the interval between the log periodic plate 1 and the radiation panel 2 is designed to be 3mm.

Through verification detection, the dual-polarization ultra-wideband oscillator is based on an H-plane (plane formed by the maximum radiation direction of an antenna and the direction of a magnetic field) direction diagram generated by 1695MHz frequency points, an E-plane (plane formed by the maximum radiation direction of the antenna and the direction of an electric field) direction diagram generated by 1695MHz frequency points, an H-plane direction diagram generated by 2690MHz frequency points, an H-plane direction diagram generated by 3300MHz frequency points, an E-plane direction diagram generated by 3300MHz frequency points, an H-plane direction diagram generated by 4200MHz frequency points and an E-plane direction diagram generated by 4200MHz frequency points are respectively shown in fig. 10-17, wherein solid-line lobes in the drawings are results corresponding to the E-plane (plane formed by the maximum radiation direction of the antenna and the direction of the electric field vector), dotted-line lobes are simulation results corresponding to the E-plane direction or H-plane direction, and the figures are all set to be ultra-wideband (3 dB) under the condition of xdb width (3 MHz) of the antenna, so that the ultra-wideband oscillator can achieve ultra-wideband according to the requirements of the ultra-wideband oscillator with the requirements of being set up in the frequency of 4200 MHz.

In addition, a VSWR voltage standing wave ratio diagram and an S12 (reverse transmission coefficient) isolation diagram generated by the dual-polarized ultra-wideband oscillator are respectively shown in fig. 18 and 19, wherein an abscissa Freq in fig. 18 is a frequency value, an ordinate Y1 is a standing wave ratio, an abscissa Freq in fig. 19 is a frequency value, an ordinate is an S12 value, and the units are dB, the voltage standing wave ratio (wherein a solid line and a dotted line respectively represent the voltage standing wave ratio of positive polarization and negative polarization) of the dual-polarized ultra-wideband oscillator is stabilized between 1.08 and 1.5 within 1710-4200 MHz, the isolation is stabilized above-30 dB within 1710-4200 MHz, and the use requirement of ultra-wideband of 1710-4200 MHz is met.

Example 2

The embodiment discloses a dual-polarization ultra-wideband oscillator, which comprises a logarithmic period plate 1, a radiation panel 2, a feed balun group 3 and a feed base 4 which are sequentially arranged from top to bottom, wherein the top surface of the logarithmic period plate 1 is provided with a printed circuit layer, the printed circuit layer comprises a strong coupling structure 11 positioned in the middle of the top surface of the logarithmic period plate 1 and two weak coupling structures 12 circumferentially distributed on the periphery of the strong coupling structure 11, the strong coupling structure 11 and the weak coupling structures 12 are square, the strong coupling structure 11 is arranged in the middle of the top surface of the logarithmic period plate 1, the side length of the strong coupling structure 11 is 15mm, the side length of the weak coupling structure 12 is 7mm, and the distance between the strong coupling structure 11 and the weak coupling structure 12 and the distance between the adjacent weak coupling structures 12 are 1mm; the logarithmic period plate 1 and the radiation panel 2 are arranged at intervals, and the interval size is 0.1 time of the frequency value of the central frequency point when the dual-polarized ultra-wideband vibrator works.

Specifically, the bandwidth suitable for the dual-polarized ultra-wideband vibrator is an ultra-wideband of 1710-4200 MHz, and the interval between the log periodic plate 1 and the radiation panel 2 is designed to be 3mm.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims (10)

1. A dual-polarized ultra-wideband vibrator is characterized by comprising a logarithmic period plate, a radiation panel, a feed balun group and a feed base which are sequentially arranged from top to bottom;

the top surface of the log periodic plate is provided with a printed circuit layer;

the printed circuit layer comprises a strong coupling structure positioned in the middle of the top surface of the log periodic plate and a plurality of weak coupling structures circumferentially distributed on the periphery of the strong coupling structure.

2. The dual polarized ultra wideband resonator of claim 1, wherein the plurality of weak coupling structures circumferentially arranged around the outer perimeter of the strong coupling structure is two or more.

3. The dual polarized ultra wideband resonator of claim 1, wherein the strong coupling structure and the weak coupling structure are square in outline and the strong coupling structure has sides 1.5-3.5 times the weak coupling structure.

4. A dual polarized ultra wideband resonator according to claim 3, wherein the distance between adjacent weak coupling structures is 0.1-0.2 times the side length of the profile of the weak coupling structures.

5. The dual polarized ultra wideband resonator of claim 3, wherein the weak coupling structure is spaced from the edge of the log periodic plate by a distance greater than a side length of the weak coupling structure.

6. The dual-polarized ultra-wideband vibrator according to claim 1, wherein the log periodic plate is spaced from the radiation panel, and the spacing is 0.05-0.15 times of the frequency value of the center frequency point of the dual-polarized ultra-wideband vibrator when in operation.

7. The dual polarized ultra wideband resonator of claim 1, wherein the radiating panel is sized and shaped to match the log periodic plate size and shape.

8. The dual polarized ultra wideband resonator of claim 1, wherein the top surface of the radiating panel has a plurality of circumferentially arrayed radiating arms, the radiating arms are in a central symmetrical hexagonal shape, and the bottom surface of the radiating panel has a plurality of coupling feed surfaces respectively connected with the corresponding radiating arms.

9. The dual polarized ultra wideband resonator of claim 8, wherein a plurality of the radiating arms are based on a central circumferential array of the strong coupling structure and the corner ends near the center of the strong coupling structure are right angles.

10. The dual polarized ultra wideband resonator of claim 8, wherein the radiating arm has a footprint that is larger than the footprint of the strong coupling structure.