CN112803161A - Electromagnetic band gap structure for surface wave suppression and patch antenna - Google Patents
Electromagnetic band gap structure for surface wave suppression and patch antenna Download PDFInfo
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- CN112803161A CN112803161A CN202110337199.7A CN202110337199A CN112803161A CN 112803161 A CN112803161 A CN 112803161A CN 202110337199 A CN202110337199 A CN 202110337199A CN 112803161 A CN112803161 A CN 112803161A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0478—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with means for suppressing spurious modes, e.g. cross polarisation
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Abstract
The embodiment of the invention provides an electromagnetic band gap structure for surface wave suppression and a patch antenna with electromagnetic band gap loading, wherein the electromagnetic band gap structure comprises: the electromagnetic band gap metal pattern comprises a coplanar electromagnetic band gap metal pattern, wherein a unit structure of the coplanar electromagnetic band gap metal pattern is rectangular, and patch parasitic units are arranged at unit corners of the unit structure; wherein, each patch parasitic unit is rotationally and symmetrically arranged; the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners; a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape. The electromagnetic band gap structure provided by the embodiment of the invention avoids metalized through holes used in the existing electromagnetic band gap, realizes coplanar design, reduces the processing and production difficulty, and also realizes broadband and miniaturized design compared with the existing scheme.
Description
Technical Field
The invention relates to the technical field of electromagnetic radiation, in particular to an electromagnetic band gap structure for surface wave suppression and a patch antenna loaded with an electromagnetic band gap.
Background
TM, TE, etc. mode surface waves widely exist in various types of transmission lines, such as microstrip lines, slot lines, coplanar waveguide transmission lines, etc., and the wide existence of surface waves reduces the performance of the transmission lines, increases the loss of the transmission lines, increases the coupling between the lines, and also causes problems of parasitic radiation, etc. Accordingly, electromagnetic structures that suppress or utilize surface waves have received extensive attention and research
The electromagnetic band gap structure is a special artificial periodic electromagnetic material. The specific electromagnetic effect is realized by using the units which are arranged periodically. The EBG structure is mainly classified into two types, the first type is a Bragg scattering type, the band gap of this type is caused by Bragg scattering, and the periodic arrangement of the cells causes the phase of the scattered waves to be periodically distributed, so that the scattered waves of each cell are superposed in opposite phases and mutually cancelled out in a specific frequency and direction to form the band gap. The second type is a local resonance type, which forms a band gap using resonance characteristics of the periodic unit itself. The second type of EBG structure is generally more compact than the first type of EBG structure and therefore has received much attention and research.
Early resonant type electromagnetic bandgap structures were mushroom type structures proposed by d.f. sieven pipe et al, but with a through hole at the center of the cell, increasing processing complexity and cost. Later, f.r. Yang et al proposed a coplanar electromagnetic bandgap structure with periodic LC resonant cells introduced in one plane to form the bandgap, but this structure still had the problem of large size. In many applications, such as large angle scanning phased arrays, high density PCB boards, etc., there is not enough space to accommodate large size EBG structures; the local resonance type electromagnetic band gap structure is generally an LC resonance circuit in nature, and the bandwidth of the local resonance type electromagnetic band gap structure is often narrow and cannot meet the requirement of a wide frequency band.
Disclosure of Invention
In view of the problems in the prior art, the embodiments of the present invention provide an electromagnetic bandgap structure for surface wave suppression and an electromagnetic bandgap loaded patch antenna.
Specifically, the embodiment of the present invention provides the following solutions:
an embodiment of the present invention provides an electromagnetic bandgap structure for surface wave suppression, including:
the electromagnetic band gap structure is provided with coplanar electromagnetic band gap metal patterns, the unit structure of the coplanar electromagnetic band gap metal patterns is rectangular, and patch parasitic units are arranged at the unit corners of the unit structure; wherein, each patch parasitic unit is rotationally and symmetrically arranged;
the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners;
a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape.
Further, still include: four square patch parasitic units are arranged at the unit corners of the unit structure.
Further, still include: the metal insertion finger-shaped structures are arranged in a rotational symmetry mode.
Further, still include: the metal insertion finger-shaped structure is positioned between the square patch parasitic units on the four sides of the unit.
Further, still include: and loading the electromagnetic band gap structure on a grounding medium substrate for inhibiting surface wave propagation.
Further, still include: the first devices are periodically arranged over the dielectric substrate by cell size.
Further, still include: the electromagnetic bandgap structures are periodically arranged above the grounded dielectric substrate according to cell size.
Further, still include: the center of the unit structure is a rectangular patch provided with a square ring groove.
Further, still include: further comprising: the center of the unit structure is a rectangular patch provided with a circular ring groove.
The embodiment of the invention provides an electromagnetic band gap loaded patch antenna, which comprises: and loading the electromagnetic band gap structure in the middle of the patch antenna coupled on the E surface.
The embodiment of the invention provides an electromagnetic band gap loaded patch antenna, which comprises: the electromagnetic bandgap structures are periodically arranged among the elements of the array antenna according to the element size.
As can be seen from the above technical solutions, an electromagnetic bandgap structure and an electromagnetic bandgap loaded patch antenna for surface wave suppression according to embodiments of the present invention include: the electromagnetic band gap structure is provided with coplanar electromagnetic band gap metal patterns, the unit structure of the coplanar electromagnetic band gap metal patterns is rectangular, and patch parasitic units are arranged at the unit corners of the unit structure; wherein, each patch parasitic unit is rotationally and symmetrically arranged; the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners; a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape. The electromagnetic band gap structure provided by the embodiment of the invention avoids metalized through holes used in the existing electromagnetic band gap, realizes coplanar design and reduces the processing and production difficulty.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electromagnetic bandgap structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electromagnetic bandgap structure according to another embodiment of the present invention;
FIG. 3 is a phase curve of the reflection of an electromagnetic bandgap structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a dispersion curve of an electromagnetic bandgap structure provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic top surface wave view of a grounded dielectric plate according to one embodiment of the present invention;
fig. 6 is a schematic diagram of a transmission coefficient curve of a grounded dielectric plate without loading of an electromagnetic bandgap structure according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a grounded dielectric plate with a periodically loaded electromagnetic bandgap structure according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a transmission coefficient curve of a grounded dielectric slab loaded with an electromagnetic bandgap structure according to an embodiment of the present invention;
fig. 9 is a schematic view of a 1 x 2 microstrip patch array according to an embodiment of the present invention;
fig. 10 is a schematic diagram of an S-parameter curve of a 1 x 2 microstrip patch array according to an embodiment of the present invention;
fig. 11 is a schematic view of a 1 x 2 microstrip patch array loaded with an electromagnetic bandgap structure according to an embodiment of the present invention;
fig. 12 is a schematic diagram of an S-parameter curve of a 1 x 2 microstrip patch array loaded with an electromagnetic bandgap structure according to an embodiment of the present invention;
the reference numerals in the above figures have the meanings given respectively:
1 denotes a metal ground plate; 2 denotes a dielectric substrate; 3 represents a coplanar electromagnetic bandgap metal pattern; 4 denotes a patch parasitic element; 5 represents a metal interdigitated structure; 6 denotes a rectangular patch; 7 denotes a dielectric plate; 8 denotes a ground plane; 9 and 10 represent two wave ports; 11 denotes a center plane of the dielectric plate; 12 denotes an electromagnetic bandgap structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. 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.
Fig. 1 is a schematic structural diagram of an electromagnetic bandgap structure according to an embodiment of the present invention; as shown in fig. 1, the electromagnetic bandgap structure includes:
the electromagnetic band gap structure is provided with coplanar electromagnetic band gap metal patterns, the unit structure of the coplanar electromagnetic band gap metal patterns is rectangular, and patch parasitic units are arranged at the unit corners of the unit structure; wherein, each patch parasitic unit is rotationally and symmetrically arranged;
the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners;
a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape.
The working principle and the specific working flow of the electromagnetic bandgap structure provided by this embodiment are explained below.
Specifically, the electromagnetic bandgap structure (Uniplanar Compact EBG, UC-EBG) provided by the embodiment of the present invention is provided with a coplanar metal pattern, such as a coplanar electromagnetic bandgap metal pattern, a unit structure of the coplanar electromagnetic bandgap metal pattern is rectangular, such as a unit structure of the coplanar electromagnetic bandgap metal pattern is rectangular or square, a plurality of patch parasitic units are arranged at a unit corner of the unit structure, and four square patch parasitic units are arranged at a unit corner, for example; wherein, each patch parasitic unit is rotationally and symmetrically arranged, namely, any one square patch is rotated by 90 degrees, 180 degrees and 270 degrees, so that other three square patch units can be obtained; the metal inserting finger-shaped structures are positioned between the corners of the units, for example, the metal inserting finger-shaped structures are positioned between the square patch parasitic units on the four sides of the units; a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch opened with an annular groove shape (namely a closed shape). According to the embodiment of the invention, the special resonant circuit is formed by etching gaps at a plurality of positions of the metal patch, so that the miniaturization design of the electromagnetic band gap structure is realized. Metallized through holes used in common electromagnetic band gap structures are avoided, coplanar design is realized, and production and processing cost can be reduced; the wide transmission forbidden band of the structure is known by observing the reflection phase and the Brillouin curve of the electromagnetic band gap structure. The periodic loading of the proposed electromagnetic bandgap structure on the grounded dielectric slab can significantly suppress surface waves transmitted on the grounded dielectric slab. The electromagnetic band gap structure has the characteristics of wide band, miniaturization, coplanarity and the like, and can be used for decoupling of a wide-band wide-angle scanning phased array at low cost, inhibiting surface wave loss, improving transmission line efficiency and the like.
According to the technical scheme, the electromagnetic band gap structure provided by the embodiment of the invention is provided with the coplanar electromagnetic band gap metal pattern, the unit structure of the coplanar electromagnetic band gap metal pattern is rectangular, and the unit corners of the unit structure are provided with the plurality of patch parasitic units; wherein, each patch parasitic unit is rotationally and symmetrically arranged; the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners; a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape. The electromagnetic band gap structure provided by the embodiment of the invention avoids metalized through holes used in the existing electromagnetic band gap, realizes coplanar design, reduces the processing and production difficulty, and can be used for inhibiting surface waves transmitted on a grounding dielectric plate.
On the basis of the above embodiments, in this embodiment, there are four square parasitic patch cells at the cell corners of the cell structure.
On the basis of the above embodiments, in the present embodiment, the metal interdigitated structure is rotationally symmetric.
In the present embodiment, it is understood that the metal finger-shaped structures are rotationally symmetric, for example, by rotating any one of the metal finger-shaped structures by 90 degrees, 180 degrees, and 270 degrees, three other metal finger-shaped structures can be obtained.
On the basis of the above embodiments, in this embodiment, the metal interdigitated structure is located between the square patch parasitic cells on four sides of the cell.
In this embodiment, referring to fig. 1, the unit structure is square, and there is a square parasitic patch unit at each corner of the unit, so that the metal insertion finger structure is placed in the middle of four sides of the unit, that is, the metal insertion finger structure is located between the square parasitic patch units at the four sides of the unit.
In the present embodiment, referring to fig. 2, the electromagnetic bandgap structure includes an upper metal pattern and a lower grounded dielectric substrate.
On the basis of the above embodiment, in this embodiment, the method further includes: and loading the electromagnetic band gap structure on a grounding medium substrate for inhibiting surface wave propagation.
On the basis of the above embodiment, in this embodiment, the method further includes: the electromagnetic bandgap structures are periodically arranged above the grounded dielectric substrate according to cell size.
In the present embodiment, referring to fig. 7, the electromagnetic bandgap structures are periodically arranged above the dielectric substrate in terms of cell size, and surface wave propagation can be significantly suppressed.
On the basis of the above embodiments, in this embodiment, the center of the unit structure is a rectangular patch with a square ring groove.
In this embodiment, referring to fig. 2, the center of the unit structure is a rectangular patch with a square ring groove.
In this embodiment, the rectangular patch provided with the square ring groove is used to reduce the resonant frequency and further realize miniaturization.
On the basis of the above embodiments, in this embodiment, the center of the unit structure is a rectangular patch with a circular ring groove.
In order to better understand the present invention, the following examples are further provided to illustrate the content of the present invention, but the present invention is not limited to the following examples.
The key point of the electromagnetic band gap structure provided by the embodiment of the invention for realizing broadband miniaturization coplanar design is the design of an electromagnetic band gap metal pattern, the unit structure is square, and four square patch parasitic units are arranged at the corners of the unit; the parasitic units of the square patches are rotationally symmetrical, namely any one square patch is rotated by 90 degrees, 180 degrees and 270 degrees, so that other three square patch units can be obtained; the middle of the four sides of the unit is a metal inserted finger structure; the metal insertion finger-shaped structures are rotationally symmetrical, namely any one of the metal insertion finger-shaped structures is rotated by 90 degrees, 180 degrees and 270 degrees to obtain other three metal insertion finger-shaped structures; the center of the unit is a rectangular patch provided with a square ring groove.
Further, the dielectric substrate adopted in the embodiment of the invention is Rogers 4350B, the unit period is 2.5mm, and the electromagnetic band gap structure is periodically arranged above the dielectric substrate according to the unit size, so that the surface wave propagation can be obviously inhibited.
Further, as shown in fig. 3, the designed electromagnetic bandgap unit is placed in a periodic boundary, and is excited by using a Floquet port, and a curve of the reflection phase varying with frequency is obtained through simulation, wherein the frequency range of the reflection phase between ± 90 degrees is 6.45GHz-11.21GHz, and the frequency range can approximately represent the frequency range of the electromagnetic bandgap structure.
Further, as shown in fig. 4, intrinsic simulation of the electromagnetic bandgap structure is performed to obtain the TM mode (mode 1) and TE mode (mode 2) dispersion curves, and there is a significant bandgap between the two dispersion curves, and in this frequency range, both surface wave modes are cut off and cannot propagate.
Further, fig. 5 shows the propagation of a surface wave on a grounded dielectric plate. In the figure, 7 is a Rogers 4350B dielectric plate, 8 is a ground plane, and 9 and 10 are two wave ports respectively for exciting surface waves. A significant surface wave propagation can be observed in the central plane 11 perpendicular to the dielectric slab. Surface waves are propagated while bound to the surface of the medium, and surface waves are generally undesirable because such waves generally introduce transmission losses, parasitic radiation, poor isolation, and other problems that severely degrade system performance.
Further, fig. 6 shows the transmission characteristic curve of the surface wave without loading the electromagnetic bandgap structure, and it can be seen that the surface wave can propagate in the grounded dielectric plate almost without loss, and if not suppressed, the system performance will be greatly disturbed.
Further, as shown in fig. 7, the proposed electromagnetic bandgap structure 12, in this embodiment, 5 × 6 electromagnetic bandgap cells, is periodically loaded on the grounded dielectric plate. The surface wave propagation can be greatly inhibited without changing other structural parameters and additionally perforating.
Further, as shown in fig. 8, the propagation of surface waves after periodically loading the proposed electromagnetic bandgap structure on a grounded dielectric plate is greatly suppressed, up to approximately 30dB, and at the same time covers a bandwidth of about 8 GHz.
Further, a surface wave is present in the dielectric plate, and particularly, a surface wave cutoff frequency of the TM mode is 0, and thus, it is widely present. In microstrip array antennas, the presence of surface waves increases adjacent coupling, and inter-element coupling degrades array matching and radiation performance. Therefore, the broadband miniaturized coplanar electromagnetic band gap structure provided by the embodiment of the invention can inhibit surface wave propagation, so that the isolation degree of the antenna can be improved.
Further, as shown in fig. 9, 1 microstrip antenna array with 1 × 2, two antenna elements have higher coupling as shown in fig. 10.
Further, as shown in fig. 11 and 12, the isolation of about 10dB can be significantly improved by loading the wideband miniaturized coplanar electromagnetic bandgap structure proposed by the embodiment of the present invention between two microstrip antenna units.
In the present embodiment, Mode1, Mode2, S11, S12, S21, and S22 shown in the drawings are explained, where Mode1 denotes a surface wave TM Mode, Mode2 denotes a surface wave TE Mode, S11 denotes a 1-port reflection coefficient, S12 denotes a 12-port isolation degree, S21 denotes a 21-port isolation degree, and S22 denotes a 2-port reflection coefficient.
The embodiment shows the demonstration of surface wave suppression, and the method has the advantages of wide frequency band, coplanarity, miniaturization and the like, and can be widely applied to decoupling of planar microstrip phased arrays, efficiency improvement, noise suppression and the like.
In the present embodiment, it should be noted that the above embodiments and descriptions are only for the principle and basic structure of the present invention, and the present invention may have various changes and modifications, such as increasing or decreasing the unit period, changing some dimension parameters without changing the electromagnetic bandgap structure pattern, without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the claimed invention.
In summary, the embodiments of the present invention have at least the following advantages:
1. compared with the classical mushroom-type electromagnetic band gap structure, the electromagnetic band gap structure provided by the embodiment of the invention has the advantage that the central frequency is reduced by 45% under the same condition, namely, the miniaturization is realized.
2. Compared with the classic mushroom-type electromagnetic band gap structure, the electromagnetic band gap structure provided by the embodiment of the invention does not need a metal through hole, can realize coplanar design, and reduces the processing and production difficulty.
3. The electromagnetic band gap structure provided by the embodiment of the invention can have a remarkable inhibiting effect on surface waves in a frequency band of 7.5-15GHz, and the bandwidth of the electromagnetic band gap structure is far beyond that of a classical mushroom-type electromagnetic band gap structure.
The embodiment of the invention provides an electromagnetic band gap loaded patch antenna, which comprises: and loading the electromagnetic band gap structure in the middle of the patch antenna coupled on the E surface.
The embodiment of the invention provides an electromagnetic band gap loaded patch antenna, which comprises: the above electromagnetic bandgap structures are periodically arranged in the middle of the elements of the array antenna according to the size of the elements.
In addition, in the present invention, terms such as "first" and "second" are used for descriptive purposes only and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Moreover, in the present invention, 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 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.
Furthermore, in the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," 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, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electromagnetic bandgap structure for surface wave suppression, comprising:
the electromagnetic band gap structure is provided with coplanar electromagnetic band gap metal patterns, the unit structure of the coplanar electromagnetic band gap metal patterns is rectangular, and patch parasitic units are arranged at the unit corners of the unit structure; wherein, each patch parasitic unit is rotationally and symmetrically arranged;
the four sides of the unit structure are metal insertion finger structures, wherein the metal insertion finger structures are positioned between unit corners;
a rectangular patch is arranged in the center of the unit structure; the rectangular patch is a rectangular patch which is provided with an annular groove shape.
2. The electromagnetic bandgap structure for surface wave suppression as recited in claim 1, further comprising: four square patch parasitic units are arranged at the unit corners of the unit structure.
3. The electromagnetic bandgap structure for surface wave suppression as recited in claim 2, further comprising: the metal insertion finger-shaped structures are arranged in a rotational symmetry mode.
4. The electromagnetic bandgap structure for surface wave suppression as recited in claim 3, further comprising: the metal insertion finger-shaped structure is positioned between the square patch parasitic units on the four sides of the unit.
5. The electromagnetic bandgap structure for surface wave suppression as recited in claim 1, further comprising: and loading the electromagnetic band gap structure on a grounding medium substrate for inhibiting surface wave propagation.
6. The electromagnetic bandgap structure for surface wave suppression as recited in claim 5, further comprising: the electromagnetic bandgap structures are periodically arranged above the grounded dielectric substrate according to cell size.
7. The electromagnetic bandgap structure for surface wave suppression as recited in claim 1, further comprising: the center of the unit structure is a rectangular patch provided with a square ring groove.
8. The electromagnetic bandgap structure for surface wave suppression as recited in claim 1, further comprising: the center of the unit structure is a rectangular patch provided with a circular ring groove.
9. An electromagnetic bandgap-loaded patch antenna, comprising: loading the electromagnetic bandgap structure of any of claims 1-8 in the middle of an E-plane coupled patch antenna.
10. An electromagnetic bandgap-loaded patch antenna, comprising: an electromagnetic bandgap structure as claimed in any one of claims 1 to 8 arranged periodically in the middle of an element of an array antenna according to the size of the element.
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| CN202110337199.7A CN112803161B (en) | 2021-03-30 | 2021-03-30 | Electromagnetic band gap structure for surface wave suppression and patch antenna |
| PCT/CN2022/081435 WO2022206403A1 (en) | 2021-03-30 | 2022-03-17 | Electromagnetic bandgap structure for surface wave suppression and patch antenna |
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| WO2022206403A1 (en) * | 2021-03-30 | 2022-10-06 | 网络通信与安全紫金山实验室 | Electromagnetic bandgap structure for surface wave suppression and patch antenna |
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| SAMINENI PEDDAKRISHNA等: "Electromagnetic band-gap structured printed antennas: A feature-oriented survey", 《INTERNATIONAL JOURNAL OF WILEY RF AND MICROWAVE COMPUTER-AIDED ENGINEERING》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206403A1 (en) * | 2021-03-30 | 2022-10-06 | 网络通信与安全紫金山实验室 | Electromagnetic bandgap structure for surface wave suppression and patch antenna |
| CN113659326A (en) * | 2021-08-18 | 2021-11-16 | 英特睿达(山东)电子科技有限公司 | Millimeter wave microstrip antenna and millimeter wave radar based on electromagnetic band gap structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022206403A1 (en) | 2022-10-06 |
| CN112803161B (en) | 2021-08-03 |
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