CN216161929U - Linearly polarized antenna, antenna array and electronic equipment - Google Patents
Linearly polarized antenna, antenna array and electronic equipment Download PDFInfo
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- CN216161929U CN216161929U CN202120385761.9U CN202120385761U CN216161929U CN 216161929 U CN216161929 U CN 216161929U CN 202120385761 U CN202120385761 U CN 202120385761U CN 216161929 U CN216161929 U CN 216161929U
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Abstract
The utility model discloses a linearly polarized antenna, an antenna array and electronic equipment, wherein the linearly polarized antenna comprises an antenna main body; the antenna main body is provided with a first feed part and a second feed part, and the first feed part and the second feed part work in a time-sharing mode so that the antenna main body can receive and transmit linearly polarized waves in two orthogonal directions. Therefore, the linear polarization antenna is provided with the two feeding parts working in a time-sharing mode, so that the linear polarization waves in two orthogonal directions can be respectively transmitted and received, the isolation degree of the linear polarization antenna is improved, and the popularization and the use of the linear polarization antenna are facilitated.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a linearly polarized antenna, an antenna array, and an electronic device.
Background
Antennas are important components of wireless communication systems as a means of transmitting and receiving electromagnetic waves. The linear polarization antenna can simultaneously transmit and receive electromagnetic wave signals with two orthogonal polarization directions, and is widely applied to the field of communication. However, the conventional linearly polarized antenna has poor isolation, which affects the use of the antenna.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a linearly polarized antenna, an antenna array and electronic equipment, and aims to solve the problem that the use of the antenna is influenced due to poor isolation of the conventional dual polarized antenna.
In a first aspect, according to an embodiment of the present invention, there is provided a linearly polarized antenna including an antenna body;
the antenna main body is provided with a first feed part and a second feed part, and the first feed part and the second feed part work in a time-sharing mode so that the antenna main body can receive and transmit linearly polarized waves in two orthogonal directions.
In a possible implementation manner, a straight line from the first feeding portion to the center of the antenna body and a straight line from the second feeding portion to the center of the antenna body form a preset included angle.
In one possible implementation, the preset included angle is 85-95 °.
In one possible implementation manner, the antenna body is a laminated structure formed on a substrate in which dielectric layers and electric layers are alternately arranged.
In a possible implementation manner, the laminated structure is provided with a first electrical layer, a first dielectric layer, a second electrical layer, a second dielectric layer, a third electrical layer, a third dielectric layer and a fourth electrical layer from top to bottom in sequence;
the first electrical layer is provided with a first grounding part, the second electrical layer is provided with a second grounding part, the first electrical layer and/or the second electrical layer is provided with a transmission line, the third electrical layer is provided with a third grounding part, and the fourth electrical layer is provided with a radiation part and a fourth grounding part.
In one possible implementation, the transmission line is a microstrip line formed on the first electrical layer.
In one possible implementation, the transmission line is a strip line formed on the second electrical layer.
In one possible implementation, the transmission line is a microstrip line formed on the first electrical layer and a strip line formed on the second electrical layer.
In one possible implementation manner, the impedance reference layers of the strip line are a first electrical layer and a third electrical layer, and the microstrip line and the impedance reference layer of the radiation portion are a second electrical layer.
In one possible implementation, the radiating portion is polygonal.
In one possible implementation, the radiating portion is square.
In one possible implementation, the sides of the square are 28.5mm to 29.5 mm.
In one possible implementation, the thickness of the radiating portion is 0.03mm to 0.04 mm.
In a possible implementation manner, a vertical distance between the first feeding portion and a first side of the square is 6.5mm to 7.5mm, a vertical distance between the second feeding portion and a second side of the square is 6.5mm to 7.5mm, the first side is a side of the square closest to the first feeding portion, and the second side is a side of the square closest to the second feeding portion.
In a possible implementation manner, the thickness of the microstrip line is 0.03mm to 0.04mm, and the width of the microstrip line is 0.338mm to 0.348 mm.
In one possible implementation, the thickness of the stripline is 0.017mm to 0.018mm, and the width of the stripline is 0.26mm to 0.27 mm.
In one possible implementation manner, the first dielectric layer, the second dielectric layer and the third dielectric layer are all FR-4 substrates.
In one possible implementation, the FR-4 substrate has a dielectric constant of 4.6.
In one possible implementation, the thickness of the first dielectric layer is 1.06mm to 1.07 mm.
In one possible implementation manner, the thickness of the second dielectric layer and the third dielectric layer is 0.15mm to 025 mm.
In a possible implementation manner, the linearly polarized antenna further includes a first metalized conduction piece and a second metalized conduction piece penetrating through the first electrical layer, the first dielectric layer, the second electrical layer, the second dielectric layer, the third electrical layer, the third dielectric layer and the fourth electrical layer, so that the transmission line is connected to the radiation portion through the metalized conduction pieces, and the first metalized conduction piece and the second metalized conduction piece form the first feed portion and the second feed portion on the radiation portion.
In a second aspect, according to an embodiment of the present invention, there is provided an antenna array including a plurality of the above-described linearly polarized antennas.
In one possible implementation, the plurality of linearly polarized antennas are arranged in a circular or square array.
In one possible implementation, the antenna array further includes a multi-stage radio frequency control circuit connected to the transmission line of each of the linearly polarized antennas.
In a possible implementation manner, the multi-stage radio frequency control circuit includes a first node that divides into two and two first-stage wirings respectively connected to the first node, each first-stage wiring is provided with a second node that divides into three, each second node is respectively connected to three second-stage wirings, each second-stage wiring is provided with a third node that divides into four, each third node is connected to four third-stage wirings, and each two adjacent third-stage wirings are in a group and connected to a linearly polarized antenna closest to the third-stage wiring.
In a third aspect, according to an embodiment of the present invention, there is provided an electronic device comprising the above-mentioned linearly polarized antenna and/or the above-mentioned antenna array.
According to the linearly polarized antenna, the antenna array and the electronic device provided by the embodiment of the utility model, the linearly polarized antenna is provided with the two feeding parts working in a time-sharing manner, so that linearly polarized waves in two orthogonal directions can be respectively received and transmitted, the isolation of the linearly polarized antenna is improved, and the popularization and the use of the linearly polarized antenna are facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a structural diagram of an antenna main body according to an embodiment of the present invention;
fig. 2 is a top view of a linearly polarized antenna in an embodiment of the utility model;
fig. 3 is a schematic structural diagram of an impedance model of a microstrip line according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an impedance model of a stripline in another embodiment of the present invention;
FIG. 5 is a graph of input return loss S11, isolation S12, and output return loss S13 of a linearly polarized antenna according to an embodiment of the present invention;
FIG. 6 is a linear polarized wave gain diagram of the first feeding portion in an embodiment of the present invention;
fig. 7 is a block diagram of an antenna array according to an embodiment of the present invention;
fig. 8 is a structural diagram of an antenna array according to another embodiment of the present invention.
Wherein, 1-antenna body, 101-first electric layer, 102-first dielectric layer, 103-second electric layer, 104-second dielectric layer, 105-third electric layer, 106-third dielectric layer, 107-fourth electric layer, 108-transmission line, 109-radiation part, 110-first feed part, 111-second feed part, 112-model microstrip line, 113-first model dielectric layer, 114-first model impedance reference layer, 115-second model impedance reference layer, 116-third model impedance reference layer, 117-second model dielectric layer, 118-model strip line, 2-multistage radio frequency control circuit, 201-first node, 202-second node, 203-third node, 204-first stage, 205-second stage, 206-third level routing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first aspect, as shown in fig. 2, according to an embodiment of the present invention, there is provided a linearly polarized antenna, including an antenna body 1; the antenna body 1 is provided with a first feed unit 110 and a second feed unit 111, and the first feed unit 110 and the second feed unit 111 operate in time division so that the antenna body 1 can transmit and receive linearly polarized waves in two orthogonal directions.
In a specific application, the first feeding unit 110 and the second feeding unit 111 of the linear polarization antenna are respectively connected to a control switch, and the control switch controls the time-sharing operation of the first feeding unit 110 and the second feeding unit 111, that is, when the first feeding unit 110 is operated, the second feeding unit 111 is not operated, so that the antenna body 1 can transmit and receive linear polarization waves in two orthogonal directions. Therefore, the linear polarization antenna is provided with the two feeding parts working in a time-sharing mode, so that the linear polarization waves in two orthogonal directions can be respectively received and transmitted, the single antenna can separately receive and transmit the linear polarization waves in the two orthogonal directions, the size of the antenna can be reduced, the miniaturization of the antenna is facilitated, the isolation of the antenna is improved, and the popularization and the use of the linear polarization antenna are facilitated.
Further, a preset included angle is formed between a straight line from the first feeding portion 110 to the center of the antenna body 1 and a straight line from the second feeding portion 111 to the center of the antenna body 1, so that the linearly polarized antenna has two polarization directions.
Specifically, the preset included angle is 85 ° to 95 °, in some preferred implementations, as shown in fig. 2, the preset included angle is 90 °, two polarization directions are orthogonal to each other, for example, x-axis polarization and y-axis polarization are orthogonal to each other, and the orthogonal feeding portion can obtain information carried by the electromagnetic wave to a greater extent.
In the above embodiment, as shown in fig. 1, the antenna main body 1 is a laminated structure formed on a substrate in which dielectric layers and electric layers are alternately arranged.
The electric layer may be made of conductive material such as silver, aluminum, iron, zinc or metal alloy, preferably conductive material with low loss such as copper or silver, or nonmetal such as graphite, composite plastic material formed by adding conductive material, and the embodiment is not limited.
The dielectric layer can be made of bismaleimide triazine resin or glass fiber reinforced oxygen resin, and can also be a flexible sheet substrate made of polyimide. In some preferred implementation modes, the substrate is an FR-4 dielectric substrate, and the FR-4 material has the advantages of stable electrical insulation, good flatness, smooth surface, no pit and standard thickness tolerance, has good electrical characteristics and is less influenced by the environment.
The layers of the substrate can be bonded together by a thin glue press, and the effect of the glue on the antenna performance is negligible. The number of the dielectric layers and the number of the electrical layers may be determined by the structure of the antenna main body 1, that is, the total number of the layers of the substrate may meet the design requirement of the structure of the antenna main body 1, that is, the total number of the layers of the substrate is greater than or equal to the total number of the layers required by the structure of the antenna main body 1, and generally speaking, the total number of the layers of the substrate is the same as the total number of the layers required by the structure of the antenna main body 1, so as to avoid introducing other interference and the like, and improve the overall performance of the antenna.
Specifically, as shown in fig. 1 and fig. 2, the stacked structure is sequentially provided with a first electrical layer 101, a first dielectric layer 102, a second electrical layer 103, a second dielectric layer 104, a third electrical layer 105, a third dielectric layer 106, and a fourth electrical layer 107 from top to bottom; a first ground portion is formed on the first electrical layer 101, a second ground portion is formed on the second electrical layer 103, a transmission line 108 is formed on the first electrical layer 101 and/or the second electrical layer 103, a third ground portion is formed on the third electrical layer 105, and a radiation portion 109 and a fourth ground portion are formed on the fourth electrical layer 107.
The transmission line 108 and the radiation portion 109 may be formed by etching corresponding electrical layers, and the area of the radiation portion 109 is smaller than the surface area of the third dielectric layer 106, so as to simplify the production process. In the case of an array composed of a plurality of linearly polarized antennas, the fourth ground portion of the fourth electrical layer 107 functions to reduce coupling between the linearly polarized antennas.
In a particular application, the transmission line 108 may be implemented using different structures, which are described in detail below.
The first mode is as follows: the transmission line 108 is a microstrip line formed on the first electrical layer 101, and the microstrip line has the advantages of small size, light weight, wide frequency band, high reliability, low manufacturing cost, and the like, thereby improving the performance of the linearly polarized antenna.
By setting the impedance reference layer (i.e. the second electrical layer 103) for adjusting the microstrip line, adjusting the width and thickness of the microstrip line, selecting the dielectric layer plate with the common dielectric constant, and adjusting the parameters such as the thickness of the dielectric layer plate, adaptive matching impedance can be obtained, thereby improving the matching degree of the antenna.
Specifically, as shown in fig. 3, the impedance model of the microstrip line sequentially includes, from top to bottom, a model microstrip line 112, a first model dielectric layer 113, and a first model impedance reference layer 114, and the characteristic impedance of the microstrip line transmission line is adjusted by using the following formula:
wherein Z is0Characteristic impedance of microstrip transmission line, epsilonr0Is the dielectric constant, H, of the first model dielectric layer 1130Is the thickness, W, of the first mold dielectric layer 1140Is the width, T, of the model microstrip line 1120The thickness of the dummy microstrip line 112.
According to the above model, it can be seen that the model microstrip line 112 may specifically adopt a metal structure etched on the first electrical layer 101 according to a predetermined trace pattern in this embodiment, the first model dielectric layer 113 may specifically adopt the first dielectric layer 102 in this embodiment, and the first model impedance reference layer 114 may specifically adopt a metal structure etched on the second electrical layer 103 according to a predetermined trace pattern in this embodiment, so that the matching impedance can be obtained by adjusting the magnitude of each parameter through the impedance model of the microstrip line and the corresponding formula, thereby improving the matching degree of the antenna.
The second mode is as follows: the transmission line 108 is a strip line formed on the second electrical layer 103, and by setting an impedance reference layer (i.e., the first electrical layer 101) for adjusting the second electrical layer 103 and adjusting the width and thickness of the strip line, selecting a dielectric layer plate with a common dielectric constant, and adjusting parameters such as the thickness of the dielectric layer plate, adaptive matching impedance can be obtained, thereby improving the matching degree of the antenna.
As shown in fig. 4, the impedance model of the strip line includes a second model dielectric layer 117, a model strip line 118 is disposed in the second model dielectric layer 117, a second model impedance reference layer 115 is disposed on the upper portion of the second model dielectric layer 117, a third model impedance reference layer 116 is disposed on the lower portion of the second model dielectric layer 117, and the characteristic impedance of the strip line transmission line is adjusted by using the following formula:
wherein Z is1Characteristic impedance of stripline transmission line, epsilonr1Is the dielectric constant, H, of the second model dielectric layer 1171Is the thickness of the second mold dielectric layer 117, W1Is the width, T, of the model stripline 1181The thickness of the model stripline 118.
According to the above model, it can be seen that the model strip line 118 may specifically adopt a metal structure etched on the second electrical layer 103 according to a predetermined trace pattern in this embodiment, the second model dielectric layer 117 may specifically adopt the first dielectric layer 102 and the second dielectric layer 104 in this embodiment, the second model impedance reference layer 115 may specifically adopt a metal structure etched on the first electrical layer 101 according to a predetermined trace pattern in this embodiment, and the third model impedance reference layer 116 may specifically adopt a metal structure etched on the third electrical layer 105 according to a predetermined pattern in this embodiment, so that the size of each parameter is adjusted through the impedance model of the strip line and the corresponding formula, and then the adaptive matching impedance can be obtained, thereby improving the matching degree of the antenna.
The third mode is as follows: the transmission line 108 is a microstrip line formed on the first electrical layer 101 and a strip line formed on the second electrical layer 103. The impedance reference layer of the strip line is the first electrical layer 101 and the second electrical layer 103, and the impedance reference layer of the microstrip line and the radiation portion 109 is the second electrical layer 103. By setting the impedance reference layer, adjusting the width and thickness of the strip line and the microstrip line, selecting the dielectric layer plate with the common dielectric constant, adjusting parameters such as the thickness of the dielectric layer plate and the like, adaptive matching impedance can be obtained, and therefore the matching degree of the antenna is improved. The specific adjustment and setting method can refer to the impedance models of the microstrip line and the strip line, and is not described in detail.
In addition, the use of the laminated structure can increase the distance between the radiation portion 109 and the first ground portion of the first electrical layer 101, thereby increasing the impedance bandwidth.
Specifically, the radiation portion 109 has a polygonal shape. Alternatively, as shown in fig. 2, the radiation portion 109 is square, but the radiation portion 109 may also have other shapes, and the present application is not limited thereto.
The first feeding portion 110 and the second feeding portion 111 may be implemented by a metalized via, such as a metalized via. Specifically, the linearly polarized antenna further includes a first metalized conducting element and a second metalized conducting element penetrating through the first electrical layer 101, the first dielectric layer 102, the second electrical layer 103, the second dielectric layer 104, the third electrical layer 105, the third dielectric layer 106 and the fourth electrical layer 107, so that the transmission line 108 is connected to the radiation portion 109 through the metalized conducting elements, and the first metalized conducting element and the second metalized conducting element form a first feeding portion 110 and a second feeding portion 111 on the radiation portion 109.
In some embodiments, the radiation portion 109 is square, the side length of the square is 28.5mm to 29.5mm, the thickness of the radiation portion 109 is 0.03mm to 0.04mm, the vertical distance between the first feeding portion 110 and the first side of the square is 6.5mm to 7.5mm, the vertical distance between the second feeding portion 111 and the second side of the square is 6.5mm to 7.5mm, the first side is the side of the square closest to the first feeding portion 110, the second side is the side of the square closest to the second feeding portion 111, the thickness of the microstrip line is 0.03mm to 0.04mm, the width of the microstrip line is 0.338mm to 0.348mm, the thickness of the strip line is 0.017mm to 0.018mm, the width of the strip line is 0.26mm to 0.27mm, the first dielectric layer 102, the second dielectric layer 104 and the third dielectric layer 106 are FR-4 substrates, the dielectric constant of the FR-4 substrate is 4.6, the thickness of the first dielectric layer 102 is 1.06mm to 1.07mm, the thickness of the second dielectric layer 104 and the third dielectric layer 106 is 0.15mm-025 mm.
In some preferred embodiments, the side length of the square is 29mm, the thickness of the radiation part 109 is 0.035mm, the vertical distance between the first feeding part 110 and the first side of the square is 7mm, the vertical distance between the second feeding part 111 and the second side of the square is 7mm, the thickness of the microstrip line is 0.035mm, the width of the microstrip line is 0.343mm, the thickness of the strip line is 0.0175mm, the width of the strip line is 0.265mm, the first dielectric layer 102, the second dielectric layer 104 and the third dielectric layer 106 are FR-4 substrates, the dielectric constant of the FR-4 substrate is 4.6, the thickness of the first dielectric layer 102 is 1.065mm, the thickness of the second dielectric layer 104 and the third dielectric layer 106 is 0.2mm, the matching impedance is 50 Ω, and the error is 5%. The linear polarization antenna with the size is simulated by using simulation software, as shown in fig. 5 and 6, the frequency band of the linear polarization antenna is 2GHz-3GHz, the whole frequency band (2.4GHz-2.48GHz) of bluetooth is covered, the impedance matching of the antenna is good, and the isolation is less than-17 dB, so that the linear polarization antenna can be used as a signal transceiver in the field of bluetooth communication.
In a second aspect, according to an embodiment of the present invention, there is provided an antenna array including a plurality of the above-described linearly polarized antennas.
The antenna array comprises the linear polarization antenna explained in the embodiment, so that the linear polarization antenna in the antenna array can respectively receive and transmit linear polarization waves in two orthogonal directions, the single antenna can separately receive and transmit the linear polarization waves in the two orthogonal directions, the size of the antenna can be reduced, the miniaturization of the antenna array is facilitated, and the isolation of the antenna is improved.
The arrangement of the multi-polarized antennas may be set according to different positioning algorithms, and optionally, as shown in fig. 7, the plurality of linearly polarized antennas are arranged in a circular or square array.
The linear polarization antenna has two polarization directions, and more feed data can be obtained under the same array size. And the two polarization directions are orthogonal to each other, for example, the polarization of the x axis and the polarization of the y axis are orthogonal to each other, and the information carried by the electromagnetic wave can be obtained to a greater extent by the orthogonal feed point. In addition, the circular array has the largest area surrounded by the array under the same number and spacing of the antennas, namely the largest equivalent aperture, and a larger space is arranged in the middle for arranging circuit components such as a microstrip line, a radio frequency switch array, a chip, a communication module and the like, so that the wiring is convenient, and when the antennas are set as rotary antennas, the layout of the microstrip line is also convenient.
Further, the antenna array further comprises a multistage radio frequency control circuit 2 connected to the transmission line 108 of each linearly polarized antenna. The connecting wires at all levels can be equally distributed by the graded wiring, and the position of each section can be flexibly adjusted, so that the equal-length wiring is more convenient.
In some embodiments, as shown in fig. 8, the multi-stage rf control circuit 2 includes a first node 201 that is divided into two parts and two first-stage traces 204 respectively connected to the first node 201, each first-stage trace 204 is provided with a second node 202 that is divided into three parts, each second node 202 is respectively connected to three second-stage traces 205, each second-stage trace 205 is provided with a third node 203 that is divided into four parts, each third node 203 is connected to four third-stage traces 206, and each two adjacent third-stage traces 206 are in a group and connected to the nearest linear polarization antenna.
The first node 201, the second node 202 and the third node 203 may adopt radio frequency switches, a 50 Ω matching network is integrated inside ports of the radio frequency switches, each radio frequency switch is compatibly controlled by two sets of cmos/TTL control levels, and the radio frequency switches control a radio frequency circuit in a time-sharing manner through a logic level, so that the first feeding portion 110 and the second feeding portion 111 of the line polarized antenna are controlled to work in a time-sharing manner.
The antenna array can be applied to positioning Of bluetooth AOA (Angle Of Arrival) communication, and specifically, the antenna array can be installed in an electronic device at a receiving end, after receiving a bluetooth signal, the received bluetooth signal is fed into a computing module, the computing module converts the bluetooth signal Of each linear polarization antenna into signal parameters such as phase and frequency Of the signal received by each linear polarization antenna, and accurate position information Of a transmitting end can be calculated through an AOA algorithm according to the signal parameters. And the linear polarization antenna can respectively receive and transmit the linear polarization waves in two orthogonal directions, so that the single antenna can independently receive and transmit the linear polarization waves in the two orthogonal directions, the size of the antenna can be reduced, the miniaturization of the antenna is facilitated, and the isolation of the antenna is improved.
In a third aspect, according to an embodiment of the present invention, there is provided an electronic device comprising the above-mentioned linearly polarized antenna and/or the above-mentioned antenna array.
The electronic device includes but is not limited to a bluetooth positioning device, and the electronic device includes the antenna structure explained in the above embodiments, so that the electronic device can receive and transmit linear polarized waves in two orthogonal directions, respectively, and is provided with a linear polarized antenna with high isolation, thereby improving the applicability of the electronic device.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (26)
1. A linearly polarized antenna, characterized by comprising an antenna body (1);
the antenna body (1) is provided with a first feeding part (110) and a second feeding part (111), and the first feeding part (110) and the second feeding part (111) work in a time-sharing mode so that the antenna body (1) can transmit and receive linearly polarized waves in two orthogonal directions.
2. The linearly polarized antenna according to claim 1, wherein a straight line from the first feeding portion (110) to the center of the antenna body (1) and a straight line from the second feeding portion (111) to the center of the antenna body (1) form a predetermined included angle therebetween.
3. The linearly polarized antenna of claim 2, wherein the predetermined included angle is 85 ° -95 °.
4. The linearly polarized antenna according to claim 1, characterized in that the antenna body (1) is a laminated structure formed on a substrate in which dielectric layers and electric layers are alternately arranged.
5. The linearly polarized antenna of claim 4, wherein the laminated structure is provided with a first electrical layer (101), a first dielectric layer (102), a second electrical layer (103), a second dielectric layer (104), a third electrical layer (105), a third dielectric layer (106), and a fourth electrical layer (107) in sequence from top to bottom;
a first grounding part is formed on the first electric layer (101), a second grounding part is formed on the second electric layer (103), a transmission line (108) is formed on the first electric layer (101) and/or the second electric layer (103), a third grounding part is arranged on the third electric layer (105), and a radiation part (109) and a fourth grounding part are formed on the fourth electric layer (107).
6. The linearly polarized antenna according to claim 5, characterized in that the transmission line (108) is a microstrip line formed on the first electrical layer (101).
7. The linearly polarized antenna according to claim 5, characterized in that the transmission line (108) is a strip line formed on the second electrical layer (103).
8. The linearly polarized antenna according to claim 5, characterized in that the transmission line (108) is a microstrip line formed on the first electrical layer (101) and a strip line formed on the second electrical layer (103).
9. The linearly polarized antenna according to claim 8, characterized in that the impedance reference layers of the strip line are a first electrical layer (101) and a third electrical layer (105), and the microstrip line and the impedance reference layer of the radiating portion (109) are a second electrical layer (103).
10. Linearly polarized antenna according to claim 5, characterized in that the radiating part (109) is polygonal.
11. Linearly polarized antenna according to claim 10, characterized in that the radiating part (109) is square.
12. The linearly polarized antenna of claim 11, wherein the square has a side length of 28.5mm to 29.5 mm.
13. The linearly polarized antenna according to claim 12, characterized in that the thickness of the radiating portion (109) is 0.03-0.04 mm.
14. The linearly polarized antenna according to claim 13, characterized in that the first feed (110) is at a perpendicular distance of 6.5mm-7.5mm from a first side of the square, the second feed (111) is at a perpendicular distance of 6.5mm-7.5mm from a second side of the square, the first side being the side of the square closest to the first feed (110), the second side being the side of the square closest to the second feed (111).
15. The linearly polarized antenna of claim 6, wherein the microstrip line has a thickness of 0.03mm to 0.04mm and a width of 0.338mm to 0.348 mm.
16. The linearly polarized antenna of claim 7, wherein the striplines are 0.017mm to 0.018mm thick and 0.26mm to 0.27mm wide.
17. The linearly polarized antenna of claim 16, wherein the first dielectric layer (102), the second dielectric layer (104), and the third dielectric layer (106) are all FR-4 substrates.
18. The linearly polarized antenna of claim 17, wherein the FR-4 substrate has a dielectric constant of 4.6.
19. The linearly polarized antenna of claim 18, wherein the first dielectric layer (102) has a thickness of 1.06mm to 1.07 mm.
20. The linearly polarized antenna of claim 19, wherein the second dielectric layer (104) and the third dielectric layer (106) have a thickness of 0.15mm-025 mm.
21. The linearly polarized antenna according to claim 5, further comprising first and second metalized vias penetrating through the first (101), first (102), second (103), second (104), third (105), third (106) and fourth (107) electrical layers, such that the transmission line (108) is connected to the radiating portion (109) through the metalized vias, and the first and second metalized vias form the first (110) and second (111) feed portions on the radiating portion (109).
22. An antenna array comprising a plurality of linearly polarized antennas according to any one of claims 1 to 21.
23. An antenna array according to claim 22, wherein a plurality of the linearly polarized antennas are arranged in a circular or square array.
24. An antenna array according to claim 22, characterized in that the antenna array further comprises a multistage radio frequency control circuit (2) connected to the transmission line (108) of each of the linearly polarized antennas.
25. An antenna array according to claim 24, wherein the multi-stage rf control circuit (2) comprises a first node (201) with a second node and two first-stage traces (204) respectively connected to the first node (201), each first-stage trace (204) is provided with a second node (202) with a third node, each second node (202) is respectively connected to three second-stage traces (205), each second-stage trace (205) is provided with a third node (203) with a fourth node, each third node (203) is connected to four third-stage traces (206), and each two adjacent third-stage traces (206) are in a group and are connected to the nearest linearly polarized antenna.
26. An electronic device comprising a linearly polarized antenna according to any of claims 1-21 or an antenna array according to any of claims 22-25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120385761.9U CN216161929U (en) | 2021-02-20 | 2021-02-20 | Linearly polarized antenna, antenna array and electronic equipment |
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| CN202120385761.9U CN216161929U (en) | 2021-02-20 | 2021-02-20 | Linearly polarized antenna, antenna array and electronic equipment |
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