CN114069248A - Reflecting plate structure and antenna device - Google Patents
Reflecting plate structure and antenna device Download PDFInfo
- Publication number
- CN114069248A CN114069248A CN202010797195.2A CN202010797195A CN114069248A CN 114069248 A CN114069248 A CN 114069248A CN 202010797195 A CN202010797195 A CN 202010797195A CN 114069248 A CN114069248 A CN 114069248A
- Authority
- CN
- China
- Prior art keywords
- antenna
- plate
- metal substrate
- metal
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 100
- 239000000758 substrate Substances 0.000 claims abstract description 74
- 230000005284 excitation Effects 0.000 claims abstract description 36
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 230000007423 decrease Effects 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A reflector structure and an antenna device are provided. The reflecting plate structure is used for being connected with an antenna, the antenna is provided with an excitation source, and the reflecting plate structure comprises a metal substrate, at least one first flat plate and a second flat plate, wherein the metal substrate is used for reflecting the radiation of the antenna, and the center of the metal substrate is provided with a virtual normal; the at least one first flat plate is arranged opposite to the metal substrate and connected to the metal substrate. The second plate is in floating connection with the metal substrate along the virtual normal line and is completely separated from the at least one first plate to form a closed slot; the metal substrate, the at least one first flat plate and the second flat plate form a cavity, and the cavity is communicated with the closed slotted hole; the closed slot is positioned on a plane, the excitation source is projected to the plane to form an excitation source region, and the excitation source region is positioned in the closed slot. Therefore, the invention can reduce the overall height.
Description
Technical Field
The present invention relates to a reflector structure and an antenna device, and more particularly, to a reflector structure and an antenna device with a closed slot and a cavity.
Background
In recent years, wireless Networks have been developed and widespread, and almost ubiquitous regardless of public places, educational places, or homes, and with the advent of the fifth Generation Mobile communication technology (5th Generation Mobile Networks, 5G), there has been an increasing demand for high gain antennas. In order to increase the antenna gain, the conventional technique uses an additional structure to increase the reflection efficiency of the antenna, but also increases the overall volume of the antenna and causes inconvenience in assembly.
Due to the limitation of the physical size of the antenna, the antenna often needs a certain space to achieve the high gain characteristic. With the existing products being miniaturized, end customers desire to be able to further reduce the antenna size.
Therefore, in order to solve the above problems of the antenna, it is greatly desired by the people how to reduce the height and the overall volume of the antenna and maintain good antenna performance, and the goal and direction of the related industry are also needed to make research and development breakthroughs.
Accordingly, it is desirable to provide a reflector structure and an antenna device to solve the above problems.
Disclosure of Invention
Therefore, the present invention provides a new reflector structure to replace the conventional reflector structure, and the antenna structure is overlapped on the new reflector structure to reduce the height and volume of the whole antenna device and to make the antenna device have high gain characteristic.
According to one embodiment of the present invention, a reflector structure for reflecting radiation of an antenna is provided, the antenna has an excitation source, and the reflector structure includes a metal substrate, at least a first plate and a second plate, wherein the metal substrate is used for reflecting radiation of the antenna, and a center of the metal substrate has a virtual normal. The at least one first plate is arranged opposite to the metal substrate and connected to the metal substrate. The second plate is in floating connection with the metal substrate along the virtual normal line and is completely separated from the at least one first plate to form a closed slot. The metal substrate, the at least one first plate and the at least one second plate form a cavity, the cavity is communicated with a closed slotted hole, the closed slotted hole is positioned above the cavity, the closed slotted hole is positioned on a plane, the excitation source is projected to the plane to form an excitation source region, and the excitation source region is positioned in the closed slotted hole.
Therefore, the reflecting plate structure can be applied to a metal reflecting plate of an antenna device, and the radiation path of the antenna is changed through the closed type slotted hole and the cavity, so that the gain of the antenna is improved.
According to another aspect of the present invention, an antenna device is provided, which includes an antenna structure and a reflector structure, wherein the antenna structure has at least one excitation source. The reflecting plate structure is used for reflecting radiation of the antenna structure and comprises a metal substrate, at least one first flat plate and a second flat plate, wherein the metal substrate is provided with a virtual normal. The at least one first plate is arranged opposite to the metal substrate and connected to the metal substrate. The second plate is in floating connection with the metal substrate along the virtual normal line and is completely separated from the at least one first plate to form a closed slot. The metal substrate, the first plate and the second plate form a cavity, the cavity is communicated with a closed slotted hole, the closed slotted hole is positioned above the cavity, the closed slotted hole is positioned on a plane, the excitation source is projected to the plane to form an excitation source region, and the excitation source region is positioned in the closed slotted hole.
Therefore, the antenna device of the invention utilizes the reflecting plate structure and changes the path of the radiation emitted from the excitation source through the closed slot and the cavity of the reflecting plate structure, thereby achieving the purposes of maintaining good impedance matching and high-gain radiation characteristics of the antenna.
Drawings
FIG. 1 is a perspective view of a reflector structure according to a first embodiment of an aspect of the present invention;
FIG. 2 is an exploded view of the reflector structure of FIG. 1;
FIG. 3 is a perspective view of a reflector structure according to a second embodiment of the present invention;
FIG. 4 is an exploded view of the reflector structure of FIG. 3;
fig. 5 is a perspective view of an antenna device according to a third embodiment of another aspect of the present invention;
fig. 6 is an exploded schematic view of the antenna device of fig. 5;
fig. 7 is a perspective view of an antenna device according to a fourth embodiment of another aspect of the present invention;
fig. 8 is a top view of the antenna device of fig. 5;
fig. 9 is a schematic diagram illustrating measurement of peak gains of the antenna structure of fig. 5 corresponding to different first widths and second widths;
fig. 10 is a schematic diagram illustrating measurement of S11 parameters corresponding to different heights for the antenna structure of fig. 5;
fig. 11 is a schematic diagram illustrating a measurement of peak gain of the antenna structure of fig. 5 corresponding to different reflectors and distances;
fig. 12 is a schematic diagram illustrating measurement of S11 parameters of the antenna structure of fig. 5 corresponding to different reflectors and distances;
FIG. 13A is a Smith chart of the antenna structure of FIG. 5 with respect to different reflectors and distances; and
fig. 13B is another smith chart of the antenna structure of fig. 5 corresponding to different reflectors and distances.
Description of the main element symbols:
100. reflecting plate structure of 200, 500a
110. 210, 510 first plate
120. 220, 520 second plate
130. 230, 530 metal substrate
231. 531 base plate
232. 532 metal layer
233. 533 metal ring
140. 240, 540 enclosed slot
150. 250, 550 support
160. 260, 560 cavities
270. 570 slotted hole
300. 300a antenna device
400. 400a antenna structure
410. 410a first antenna element
420. 420a second antenna element
411. 421, 411a, 421a excitation source
4101. 4201, 4101a, 4201a first radiation element
4102. 4202, 4102a, 4202a second radiation element
430. 430a antenna substrate
431. 431a first surface
432. 432a second surface
600. 600a support column
L, l virtual normal
W1 first width
W2 second width
Height H
Distance D
F feed-in terminal
G ground terminal
Detailed Description
Various embodiments of the present invention will be described below with reference to the accompanying drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, these implementation details are not necessary. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simplified schematic manner; and repeated elements will likely be designated with the same reference numeral.
In addition, when an element (or a mechanism or a module, etc.) is "connected," "disposed" or "coupled" to another element, it can be directly connected, disposed or coupled to the other element, or it can be indirectly connected, disposed or coupled to the other element, that is, there are other elements between the element and the other element. When an element is explicitly connected, directly disposed, or directly coupled to another element, it is intended that no other element is interposed between the element and the other element. The terms first, second, third, etc. are used merely to describe various elements or components, but the elements/components themselves are not limited, so that the first element/component can be also referred to as the second element/component. And the combination of elements/components/mechanisms/modules herein is not a commonly known, conventional or well-known combination in the art, and can not be readily determined by one of ordinary skill in the art based on whether the elements/components/mechanisms/modules themselves are well known.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic perspective view of a reflector structure 100 according to a first embodiment of an aspect of the present invention. Fig. 2 is an exploded view of the reflective plate structure 100 of fig. 1. The reflective plate structure 100 is connected to an antenna (not shown) and is used for reflecting radiation of the antenna, wherein the antenna has an excitation source (not shown).
As shown in fig. 1 and fig. 2, the reflective plate structure 100 includes at least a first plate 110, a second plate 120 and a metal substrate 130. The metal substrate 130 is mainly used for reflecting radiation emitted by the antenna, and the center of the metal substrate 130 has a virtual normal L. The at least one first plate 110 is disposed opposite to the metal substrate 130 and connected to the metal substrate 130. The second plate 120 floats on the metal substrate 130 along the virtual normal L and is completely separated from the at least one first plate 110 to form a closed slot 140. Specifically, the reflective plate structure 100 may further include a support 150 disposed between the second plate 120 and the metal substrate 130, and supporting and abutting against the second plate 120.
Specifically, at least one of the first plate 110, the second plate 120 and the metal substrate 130 forms a cavity 160, and the cavity 160 is communicated with the closed slot 140. The closed slot 140 is located on a plane (not shown), the excitation source is projected onto the plane to form an excitation source region (i.e. the position of the excitation source on the plane of the closed slot 140), and the excitation source region is located in the closed slot 140. Therefore, the reflective plate structure 100 of the present invention can be applied to a metal reflective plate of an antenna, and the radiation path of the antenna is changed through the closed slot 140 and the cavity 160, so as to improve the antenna gain. It should be noted that the closed slot 140 in fig. 1 is rectangular, and it may also be circular or polygonal, but the invention is not limited thereto.
Referring to fig. 3 and fig. 4, fig. 3 is a perspective view illustrating a reflective plate structure 200 according to a second embodiment of the present invention. Fig. 4 is an exploded view of the reflective plate structure 200 of fig. 3. As shown in fig. 3 and 4, the number of the at least one first plate 210 may be multiple. The metal substrate 230 may include a substrate 231, a metal layer 232 and a metal ring 233, wherein the substrate 231 has a surface (not labeled), the metal layer 232 is disposed on the surface, and the metal layer 232 is used for reflecting radiation emitted by the antenna. One end of the metal ring 233 is disposed around the outer periphery of the metal layer 232, and the other end of the metal ring 233 is connected to each of the first plates 210. It is noted that the metal ring 233 and each of the first plates 210 can be disposed separately from each other or integrally formed, and the metal layer 232, the metal ring 233, each of the first plates 210 and the second plates 220 form a cavity 260.
In detail, the substrate 231 and the metal layer 232 can also be regarded as being integrally formed, and the thickness (not labeled) of the substrate 231 and the metal layer 232 is only about several millimeters, so as to minimize the volume of the reflective plate structure 200, and thus, the reflective plate structure can be applied to the existing network communication products. In addition, the cavity 260 is located between the metal layer 232 and the first plate 210, and is enclosed by the metal ring 233 to form a space; in other words, the cavity 260 of the second embodiment of fig. 3 is identical to the cavity 160 of the first embodiment of fig. 2. In addition, the reflective plate structure 200 may further include a support 250 connected between the second plate 220 and the metal layer 232 and supporting and abutting against the second plate 220, wherein the height of the support 250 is the same as the height of the metal ring 233, so that the second plate 220 and each of the first plates 210 may be located on the same horizontal plane. Further, the first plates 210 are spaced apart from each other along the other end of the metal loop 233. Slots 270 may be formed between each two first plates 210, each slot 270 is connected to the closed slot 240, and the cavity 260 communicates with the closed slot 240 and all the slots 270. As shown in the second embodiment of fig. 3, the closed slot 240 and each slot 270 may be connected to each other in a # -shape, and the width of the closed slot 240 is the same as that of each slot 270. However, in other embodiments, the widths of the closed-type slot 240 and each slot 270 may be different, and thus the present invention is not limited to this embodiment.
Therefore, the reflective plate structure 200 of the present invention can be applied to a metal reflective plate of an antenna, and extends the radiation path of the antenna through the closed slot 240, each slot 270 and the cavity 260, thereby achieving a high gain characteristic.
Referring to fig. 5 and fig. 6, fig. 5 is a perspective view of an antenna device 300 according to a third embodiment of another aspect of the present invention. Fig. 6 is an exploded view of the antenna device 300 of fig. 5. As shown in fig. 5 and fig. 6, the antenna device 300 includes an antenna structure 400 and a reflector structure 500, wherein the reflector structure 500 is used for reflecting radiation emitted by the antenna structure 400. Specifically, the antenna structure 400 may include a first antenna element 410, a second antenna element 420, and an antenna substrate 430, wherein the antenna substrate 430 has a first surface 431 and a second surface 432 opposite to the first surface 431. The first antenna element 410 is disposed on the first surface 431, and the second antenna element 420 is disposed on the second surface 432.
In detail, the antenna structure 400 has two excitation sources 411 and 421, and each of the excitation sources 411 and 421 includes a feeding terminal F and a ground terminal G. The first antenna element 410 may be a dipole antenna including a first radiating element 4101 and a second radiating element 4102. The feeding terminal F is connected to the first radiation element 4101, and the ground terminal G is connected to the second radiation element 4102. The second antenna element 420 may also be another dipole antenna, which includes a first radiating element 4201 and a second radiating element 4202. The feeding terminal F is connected to the first radiating element 4201, and the ground terminal G is connected to the second radiating element 4202. In addition, as shown in fig. 5, the first antenna element 410 and the second antenna element 420 are Dual-polarization dipole antennas (Dual-polarization antenna), i.e., the polarization directions of the first antenna element 410 and the second antenna element 420 are orthogonal to each other.
In more detail, the reflective plate structure 500 is vertically disposed on the antenna structure 400, and the reflective plate structure 500 includes at least a first plate 510, a second plate 520 and a metal substrate 530. The metal substrate 530 is used for reflecting radiation of the first antenna element 410 and the second antenna element 420, and a virtual normal l is formed in the center of the metal substrate 530. The at least one first plate 510 is disposed opposite to the metal substrate 530 and connected to the metal substrate 530. The second plate 520 floats on the metal substrate 530 along the virtual normal l and is completely separated from the at least one first plate 510 to form a closed slot 540. In addition, the antenna apparatus 300 may further include a support 550, and the support 550 is disposed between the second plate 520 and the metal substrate 530 for supporting the second plate 520. It is noted that the metal substrate 530, the at least one first plate 510 and the second plate 520 form a cavity 560, and the cavity 560 is communicated with the enclosed slot 540. It is noted that the closed slot 540 is located on a plane (not shown), and the two excitation sources 411 and 421 are projected onto the plane to form two excitation source regions (not shown), respectively, each of the excitation source regions is located in the closed slot 540.
Thus, the antenna device 300 of the present invention utilizes the reflective plate structure 500, and changes the path of the radiation emitted from the excitation source 411 and the other excitation source 421 through the closed slot 540 and the cavity 560 of the reflective plate structure 500, so as to maintain good impedance matching and high-gain radiation characteristics of the antenna.
Specifically, in fig. 5 and 6, the number of the at least one first plate 510 may be multiple, and the antenna device 300 may further include a plurality of supporting pillars 600, each supporting pillar 600 being disposed between the antenna substrate 430 and the first plate 510. In addition, each supporting pillar 600 may also be disposed between the antenna substrate 430 and the second plate 520, and is used to support against the antenna structure 400.
In addition, the metal substrate 530 may include a substrate 531, a metal layer 532 and a metal ring 533, wherein the substrate 531 has a surface (not numbered). The metal layer 532 is disposed on the surface and used for reflecting radiation of the first antenna element 410 and the second antenna element 420, wherein the metal layer 532 may be a common metal material and is attached to the substrate 531 by a plating process. One end of the metal ring 533 is disposed around the outer periphery of the metal layer 532, and the other end of the metal ring 533 is connected to each of the first plates 510. Thus, the metal layer 532, the metal ring 533, and each of the first plate 510 and the second plate 520 form the cavity 560.
Fig. 7 is a perspective view of an antenna device 300a according to a fourth embodiment of another aspect of the present invention. In the fourth embodiment of fig. 7, the arrangement relationship between the reflective plate structure 500a and the supporting posts 600a is the same as that of the corresponding components in the third embodiment of fig. 5, and therefore, the description thereof is omitted. As shown in fig. 7, the antenna structure 400a may include a first antenna element 410a, a second antenna element 420a and an antenna substrate 430a, wherein the first antenna element 410a and the second antenna element 420a may be a Broadband antenna (Broadband antenna).
In addition, the antenna substrate 430a has a first surface 431a and a second surface 432a opposite to the first surface 431 a. The first antenna element 410a includes a first radiation element 4101a and a second radiation element 4102 a. The second antenna element 420a includes a first radiating element 4201a and a second radiating element 4202 a. Specifically, the first radiation element 4101a of the first antenna element 410a and the first radiation element 4201a of the second antenna element 420a are disposed on the first surface 431 a. The second radiating element 4102a of the first antenna element 410a and the second radiating element 4202a of the second antenna element 420a are disposed on the second surface 432 a. The first radiation element 4101a and the second radiation element 4102a of the first antenna element 410a are disposed on different surfaces, respectively, and the first radiation element 4101a and the second radiation element 4102a can be connected to the ground G through the feeding end F of the excitation source 411 a. Similarly, the first radiating element 4201a and the second radiating element 4202a of the second antenna element 420a are disposed on different surfaces, respectively, and the first radiating element 4201a and the second radiating element 4202a may be connected to the ground G through the feeding end F of the excitation source 421 a.
Referring to fig. 5 to 8 together, fig. 8 is a top view of the antenna device 300 of fig. 5. In detail, the first plates 510 are spaced apart from each other along the other end of the metal ring 533, and a slot 570 is formed between each two first plates 510, and each slot 570 is connected to the closed slot 540. More specifically, the closed slot 540 may have a first width W1, each slot 570 may have a second width W2, and the first width W1 and the second width W2 are both greater than or equal to 2mm and less than or equal to 14mm, i.e., the first width W1 and the second width W2 are between 2mm and 14mm, but the invention is not limited thereto. It is noted that, in the third embodiment, the closed slot 540 and each slot 570 can be connected to each other in a # -shape, and the width of the closed slot 540 is the same as that of each slot 570. However, in other embodiments, the widths of the closed-type slot 540 and each slot 570 may be different, and thus the present invention is not limited to this embodiment.
Fig. 9 is a schematic diagram illustrating a measurement of Peak Gain (Peak Gain) of the antenna structure 400 of fig. 5 corresponding to different first widths W1 and second widths W2. As can be seen from fig. 8, the antenna structure 400 covers an operating frequency band, and the peak gain of the antenna structure 400 corresponding to the operating frequency band is gradually increased according to the first width W1 and the second width W2, when the first width W1 and the second width W2 are increased.
Referring to fig. 5 and fig. 10 together, fig. 10 is a schematic diagram illustrating measurement of S11 parameters corresponding to different heights of the antenna structure 400 of fig. 5. The cavity 560 may have a height H greater than or equal to 6mm and less than or equal to 14mm, i.e., the height H of the cavity 560 is between 6mm and 14mm, but the invention is not limited thereto.
As shown in fig. 10, the antenna structure 400 is adapted to a specific operating frequency band according to the height H based on-6 dB of the parameter S11, and the operating frequency band is decreased when the height H is increased. In detail, the height H of the cavity 560 is the height of the metal ring 533, and the reflective plate structure 500 of the present invention can correspond to different operating frequency bands according to different heights H. For example: when the antenna structure 400 is a dual-polarized dipole antenna, the operating frequency band is between 0.7GHz and 1 GHz; when the antenna structure 400 is a wideband antenna, the operating frequency band is between 1700MHz to 2700MHz, and the dual-polarized dipole antenna and the wideband antenna are well known technologies and are not important in the present invention, and details are not repeated.
Referring to fig. 5 and fig. 11 to 13B together, fig. 11 is a schematic diagram illustrating a measurement of peak gains of the antenna structure 400 of fig. 5 corresponding to different reflective plates and distances D. Fig. 12 is a schematic diagram illustrating measurement of S11 parameters of the antenna structure 400 of fig. 5 corresponding to different reflective plates and distances. Fig. 13A is a smith chart of the antenna structure 400 of fig. 5 corresponding to different reflectors and distances D. Fig. 13B is another smith chart of the antenna structure 400 of fig. 5 corresponding to different reflectors and distances D. As shown in fig. 5, a distance D (i.e., a height of each supporting pillar 600) may be provided between the antenna structure 400 and the reflector structure 500, and the distance D may be between 0.1 times and 0.2 times a wavelength of a center frequency of an operating band, but the invention is not limited thereto.
As shown in fig. 11 to 13B, the distance D between the reflector structure 500 and the antenna structure 400 can maintain good impedance matching (i.e. having better S11 parameter), high gain radiation characteristic (i.e. having higher peak gain) and better Front-to-Back ratio (F/B ratio) of the antenna under the same length (EX:45mm) compared to the distance between the conventional antenna and the reflector structure. Thus, the reflector structure 500 overlaps the antenna structure 400, so that the overall height of the antenna device 300 is smaller than that of a conventional antenna by 1/8 wavelengths.
As can be seen from the above embodiments, the present invention has the following advantages: first, the antenna device can be applied to various antenna structures by adjusting the first width and the second width of the reflector plate structure, and can achieve the effect of increasing the peak gain. Secondly, the whole height of the antenna device is reduced by utilizing the reflecting plate structure of the invention, thereby reducing the volume. Thirdly, the reflecting plate structure and the antenna device have simple structure and low manufacturing cost, and are suitable for being applied to the existing network communication products.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention, and therefore, the scope of the invention should be determined by that of the appended claims.
Claims (19)
1. A reflector plate structure for reflecting radiation of an antenna having an excitation source, the reflector plate structure comprising:
a metal substrate for reflecting the radiation of the antenna, and having a virtual normal at its center;
at least one first flat plate, which is arranged opposite to the metal substrate and is connected with the metal substrate; and
a second plate, which is floated on the metal substrate along the virtual normal line and is completely separated from the at least one first plate to form a closed slot;
wherein, the metal substrate, the at least one first flat plate and the second flat plate form a cavity which is communicated with the closed slot;
wherein, the closed slot is positioned on a plane, the excitation source projects to the plane to form an excitation source area, and the excitation source area is positioned in the closed slot.
2. The reflector plate structure of claim 1, further comprising:
and the support piece is arranged between the second flat plate and the metal substrate and is used for supporting the second flat plate.
3. The reflector plate structure of claim 1, wherein the metal substrate comprises:
a substrate having a surface;
a metal layer disposed on the surface of the substrate for reflecting radiation of the antenna; and
one end of the metal ring is arranged on the outer periphery of the metal layer in a surrounding manner, and the other end of the metal ring is connected with the at least one first flat plate;
wherein the metal layer, the metal ring, the at least one first plate and the second plate form the cavity.
4. The reflective plate structure of claim 3, wherein the number of the at least one first plate is plural, each first plate is spaced apart from each other along the other end of the metal ring, and each second plate has a slot therebetween, each slot is connected to the closed slot.
5. The reflective plate structure of claim 4, wherein said closed slots and said slots are connected to each other in a groined shape.
6. The reflective plate structure of claim 4, wherein said closed slots have a first width, each of said closed slots has a second width, and both of said first width and said second width are greater than or equal to 2mm and less than or equal to 14 mm.
7. An antenna device, comprising:
an antenna structure having at least one excitation source; and
a reflector structure for reflecting radiation of the antenna structure, the reflector structure comprising:
a metal substrate having a virtual normal;
at least one first flat plate, which is arranged opposite to the metal substrate and is connected with the metal substrate; and
a second plate, which is floated on the metal substrate along the virtual normal line and is completely separated from the at least one first plate to form a closed slot;
wherein, the metal substrate, the at least one first flat plate and the second flat plate form a cavity which is communicated with the closed slot;
wherein, the closed slot is positioned on a plane, the at least one excitation source projects to the plane to form an excitation source area, and the excitation source area is positioned in the closed slot.
8. The antenna device of claim 7, wherein the antenna structure comprises:
an antenna substrate having a first surface and a second surface;
a first antenna element disposed on either the first surface or the second surface; and
a second antenna element disposed on the other of the first surface and the second surface;
wherein the antenna structure is a dual-polarized dipole antenna or a broadband antenna.
9. The antenna device of claim 8, further comprising:
and the supporting columns are respectively arranged between the antenna substrate and the at least one first flat plate or the second flat plate and are used for abutting against the antenna substrate.
10. The antenna device of claim 7, further comprising:
and the support piece is arranged between the second flat plate and the metal substrate and is used for supporting the second flat plate.
11. The antenna device of claim 7, wherein the metal substrate comprises:
a substrate having a surface;
a metal layer disposed on the surface of the substrate for reflecting radiation of the antenna structure; and
one end of the metal ring is arranged on the outer periphery of the metal layer in a surrounding manner, and the other end of the metal ring is connected with the at least one first flat plate;
wherein the metal layer, the metal ring, the at least one first plate and the second plate form the cavity.
12. The antenna device according to claim 11, wherein the number of the at least one first plate is plural, each first plate is arranged at an interval along the other end of the metal loop, and a slot is formed between each two first plates, each slot is connected to the closed slot.
13. The antenna device according to claim 12, wherein the enclosed slots and each of the slots are connected to each other in a groined shape.
14. The antenna device of claim 12, wherein the enclosed slot has a first width, each of the enclosed slots has a second width, and both the first width and the second width are greater than or equal to 2mm and less than or equal to 14 mm.
15. The antenna apparatus of claim 14, wherein the antenna structure covers an operating frequency band, the antenna structure corresponding to a peak gain of the operating frequency band according to the first width and the second width, the peak gain increasing as the first width and the second width increase.
16. The antenna device of claim 7, wherein the antenna structure covers an operating frequency band, and a distance between the antenna structure and the reflector structure is between 0.1 times and 0.2 times a wavelength of a center frequency of the operating frequency band.
17. The antenna device of claim 7, wherein the cavity has a height, the antenna structure corresponds to an operating band according to the height, and the operating band decreases as the height increases.
18. The antenna device of claim 8, wherein the antenna structure covers an operating frequency band between 0.7GHz to 1GHz when the antenna structure is the dual-polarized dipole antenna.
19. The antenna device of claim 8, wherein the antenna structure covers an operating band between 1700MHz and 2700MHz when the antenna structure is the broadband antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797195.2A CN114069248A (en) | 2020-08-10 | 2020-08-10 | Reflecting plate structure and antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797195.2A CN114069248A (en) | 2020-08-10 | 2020-08-10 | Reflecting plate structure and antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114069248A true CN114069248A (en) | 2022-02-18 |
Family
ID=80232954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010797195.2A Pending CN114069248A (en) | 2020-08-10 | 2020-08-10 | Reflecting plate structure and antenna device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114069248A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490167A (en) * | 2013-08-14 | 2014-01-01 | 京信通信技术(广州)有限公司 | High-gain smoothing antenna |
| TW201537832A (en) * | 2014-03-17 | 2015-10-01 | Wistron Neweb Corp | Multiband antenna and multiband antenna configuration method |
-
2020
- 2020-08-10 CN CN202010797195.2A patent/CN114069248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490167A (en) * | 2013-08-14 | 2014-01-01 | 京信通信技术(广州)有限公司 | High-gain smoothing antenna |
| TW201537832A (en) * | 2014-03-17 | 2015-10-01 | Wistron Neweb Corp | Multiband antenna and multiband antenna configuration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180261910A1 (en) | Slim Triple Band Antenna Array for Cellular Base Stations | |
| CN103311651B (en) | A kind of ultra wideband multi-band dual polarized antenna | |
| US5572222A (en) | Microstrip patch antenna array | |
| US8373604B2 (en) | Multiband mobile communication device and antenna thereof | |
| US20100039343A1 (en) | Antenna device | |
| Chang et al. | Triple-band microstrip patch antenna and its four-antenna module based on half-mode patch for 5G 4× 4 MIMO operation | |
| WO2012159406A1 (en) | Dual-band and dual-polarized antenna | |
| KR20020073212A (en) | Antenna, in particular mobile radio antenna | |
| US8907860B2 (en) | Stand-alone multi-band antenna | |
| WO2019062654A1 (en) | Novel spread spectrum broadband base station antenna | |
| US10270176B2 (en) | Communication device | |
| US10587051B2 (en) | Communication device | |
| US20230017375A1 (en) | Radiating element, antenna assembly and base station antenna | |
| US20220102855A1 (en) | Antenna assembly and electronic device | |
| TW201306383A (en) | Dualband circularly polarization antenna | |
| CN109462028B (en) | Radio frequency micro-electromechanical microstrip antenna | |
| US20200303836A1 (en) | Base station antennas having parasitic assemblies for improving cross-polarization discrimination performance | |
| CN102931476B (en) | Double frequency circularly polarized antenna | |
| CN112271444A (en) | High-gain dual-polarization SIW-CTS antenna array | |
| CN114069248A (en) | Reflecting plate structure and antenna device | |
| Baharom et al. | Design for uniform aperture distribution of 2× 2 lens array using concave-convex lens in THz band | |
| US20220123471A1 (en) | Patch radiating element and antenna assembly | |
| US11843161B2 (en) | Radiating element and base station antenna | |
| KR20120049647A (en) | Simple-to-manufacture antenna according to frequency characteristics | |
| TWI743912B (en) | Reflector structure and antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |