CN114039203B - Novel low-profile dual-polarized base station antenna - Google Patents

Novel low-profile dual-polarized base station antenna Download PDF

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CN114039203B
CN114039203B CN202111324877.2A CN202111324877A CN114039203B CN 114039203 B CN114039203 B CN 114039203B CN 202111324877 A CN202111324877 A CN 202111324877A CN 114039203 B CN114039203 B CN 114039203B
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metal
dielectric substrate
patch
metal patch
square
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CN114039203A (en
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周长飞
孙佳兴
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Dalian University of Technology
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Dalian University of Technology
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • 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
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • 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
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas

Abstract

The invention belongs to the technical field of wireless communication and antennas, and provides a novel low-profile dual-polarized base station antenna which structurally comprises a metal ring printed on the periphery of a dielectric substrate, a metal floor printed in the middle of the dielectric substrate and in a square structure, four square metal parasitic units printed on the front surface of the dielectric substrate, two coaxial lines, a feed network connected with the coaxial lines, and a novel artificial magnetic conductor. The antenna comprises an antenna radiation structure, a metal ring, a metal microstrip line, a novel artificial magnetic conductor structure and a metal ground plate, wherein four square metal parasitic units in the antenna radiation structure are printed on the front surface of an upper dielectric substrate, the metal ring and the square metal ground plate are printed on the front surface of a lower dielectric substrate, the metal microstrip line connected with a coaxial line is printed on the back surface of the lower dielectric substrate, and the novel artificial magnetic conductor structure is loaded below the antenna radiation body. The antenna of the invention has low height, large resonance bandwidth, stable gain, stable half-power lobe width and high isolation, and can be applied to low-profile 2G/3G/4G base station antenna scenes.

Description

Novel low-profile dual-polarized base station antenna
Technical Field
The invention belongs to the technical field of wireless communication and antennas, and relates to a novel low-profile dual-polarized base station antenna.
Background
With the advent of the 5G era, wireless communication technology has rapidly developed. Meanwhile, the base station is widely used. The antenna is an important transceiver device of the base station, and the requirements of the wireless communication system on the performance of the base station antenna are more strict. For example, the base station antenna should have a sufficiently wide impedance bandwidth. With the rapid development of communication technology and the increase of communication frequency bands, the base station antenna should have a wide enough impedance bandwidth to cover more communication frequency bands; secondly, the interference between different ports of the base station antenna needs to be small enough, so that the base station antenna should have high isolation; then, the space of the base station equipment is limited, and in order to improve the space utilization of the base station, the size of the base station antenna should be small enough and the height should be low enough. Therefore, the low profile of the antenna is one of the popular research directions for antenna design.
An Artificial Magnetic Conductor (AMC) structure is used as an antenna reflecting surface to replace the traditional metal floor as the reflecting surface, so that the height of the antenna is greatly reduced. While designing wideband AMC is a difficulty, it is another difficulty for wideband AMC to incorporate antenna radiators to maintain the performance requirements of the base station antennas. Therefore, the invention aims to design a broadband high-isolation low-profile 2G/3G/4G base station antenna.
Disclosure of Invention
The invention aims to reduce the profile height of an antenna and the profile of the antenna by using AMC as a reflecting surface of the antenna.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a novel low-profile dual-polarized base station antenna comprises a dual-polarized antenna radiation structure, a differential feed circuit, two metal short circuit columns and an AMC reflecting surface structure. The AMC reflecting surface is a 7X7 periodic structure, the periodic unit consists of a square medium substrate and two equal-size square metal patches, the size of each metal patch is slightly smaller than that of the medium substrate, and the metal patches are respectively printed on the front surface and the back surface of the medium substrate.
The dual-polarized antenna radiation structure comprises a dielectric substrate 5A, a dielectric substrate 26B, four equal-size square metal patches 1A, 2B, 3C and 4D and an annular metal patch 17. The dielectric substrate 5A is located above the dielectric substrate 26B, a distance of a layer of metal patches is formed between the back surface of the dielectric substrate 5A and the front surface of the dielectric substrate 26B, and the thickness of each metal patch is 0.035mm. The four equal-size square metal patches 1A, 2B, 3C and 4D are respectively printed at four corners of the front surface of the medium substrate 5A, and the annular metal patch 17 is printed on a frame of the front surface of the medium substrate 26B. Medium base plate 5A on be equipped with nonmetal via hole C12, medium base plate 26B be equipped with nonmetal via hole 19D, be equipped with nonmetal via hole 32F on the medium base plate 31C, nonmetal via hole C12 and nonmetal via hole 19D and nonmetal via hole 32F's center are on same straight line, nylon column 43 passes nonmetal via hole C12 and nonmetal via hole 19D and nonmetal via hole 32F, plays the effect of fixed stay.
The differential feed circuit comprises a square metal floor 18, a metal patch 27G, a metal patch 28H, a metal patch 29I, a metal patch 30J, a metal patch 6E, a metal patch 7F and two coaxial lines 40A and 41B. The square metal floor board 18 is printed on the front face of the medium substrate 26B, the center of the square metal floor board 18 is overlapped with the center of the medium substrate 26B, and the square metal floor board 18 is provided with a metal through hole G20, a nonmetal through hole D21, a metal through hole H22, a nonmetal through hole E23, a metal through hole I24 and a metal through hole K25. The metal patches 27G, 28H, 29I and 30J are printed on the back of the dielectric substrate 26B, wherein the metal patches 27G and 28H are straight microstrip lines, the metal patches 29I and 30J are bent microstrip lines, the metal patches 29I and 30J are in a zigzag structure, and metal via holes are formed at two ends of each metal patch 29I and 30J; the metal patch 29I is designed into a structure like a Chinese character ji, so that the length of the metal patch 29I is equal to the length of the metal patches 7F and 27G, and the phase of the current reaching the radiator is ensured to be consistent; the length of metal patch 30J is equal to the length of metal patch 28H, again to ensure that the phase of the current reaching the radiator is equal. One end of each of the metal patches 27G, 28H, 29I, and 30J is located near the center of the dielectric substrate 26B, and the other end is located at the center of the peripheral frame of the dielectric substrate 26B. The metal patches 6E and 7F are printed on the front surface of the dielectric substrate A5, wherein the metal patches 6E and 7F are straight microstrip lines, non-metal through holes are formed in two ends of each microstrip line, the metal patches 6E and 7F are vertically arranged at the center of the front surface of the dielectric substrate A5 along the length direction, and a gap is reserved between the two metal patches 6E and 7F. The coaxial line 40A passes throughThe nonmetal via hole 34G on the dielectric substrate 31C, the nonmetal via hole 21D at one end of the metal patch 29I close to the center of the dielectric substrate 26B is welded with the outer conductor of the coaxial line 40A, the inner conductor of the coaxial line 40A is welded with the nonmetal via hole 8A on the metal feed microstrip line 7F, and then the metal patch 7F is connected with the metal patch 27A by passing through the dielectric substrates 5A and 26B through the metal via hole 22A. The nonmetal via hole 23E of one end of the metal patch 30J close to the center of the dielectric substrate 26B is welded with the outer conductor of the coaxial line 41B, the inner conductor of the coaxial line 41B is welded with the nonmetal via hole 9B on the metal patch 6E, and then the metal patch 6E is connected with the metal patch 27G by penetrating through the dielectric substrates 5A and 26B through the metal via hole. Metal through holes 13C, 14D, 15E and 16F are formed in the center of the peripheral frame of the dielectric substrate 26B, metal patches 27G, 28H, 29I and 30J are connected with the annular metal patch 17, and the antenna generates +/-45 0 Polarized waves. The distributed capacitance is changed by adjusting the sizes of the four metal patches 1A, 2B, 3C and 4D, and further the impedance bandwidth of the antenna is expanded.
The metal posts 44A and 45B are metal short-circuit posts. One end of the metal short-circuit column 44A is welded with the metal via hole 24I on the square metal floor 18, the metal short-circuit column 44A penetrates through the non-metal via hole 35H on the dielectric substrate 31C, and the other end of the metal short-circuit column is welded on the metal floor 42 vertically corresponding to the metal via hole 24I; one end of the metal short circuit column 45B is welded with the metal through hole 25K on the square metal floor 18, and the other end is welded on the metal floor 42 vertically corresponding to the metal through hole 25K; the reason for using two metal shorting posts to connect the square metal ground plate 18 and the metal ground plate 42 is to improve the isolation between the antenna ports. The use of the metal shorting post reduces the current intensity on the square metal substrate 18, thereby reducing the interference between the two feeding ports during antenna operation.
The AMC reflecting surface 33, an AMC, is a periodic structure characterized by the fact that when an incident wave is incident on the surface of the AMC, a reflected wave is generated that is in phase with the incident wave. Using AMC as the reflecting surface of the antenna, the antenna can break the quarter wavelength limit of the radiator from the reflecting surface, thereby reducing the cost of the antennaHeight of the antenna profile. The AMC structural unit of the antenna consists of a dielectric substrate 36D, a metal patch 37K, a metal patch 38L and a metal patch 39M. The dielectric substrate 36D is a square dielectric substrate, the metal patches 37K and 38L are square metal patches, and are printed on the front and back surfaces of the dielectric substrate 36D, and the sizes of the metal patches 37K and 38L are slightly smaller than that of the dielectric substrate 36D. In order to improve the AMC structure by 90 0 The bandwidth of the phase, air, is used at a distance between the metal patches 37K and 39M. Printing a metal patch 37K below the dielectric substrate 36D allows the phase curve to shift to a low frequency, thereby achieving miniaturization.
The dielectric substrates are all made of FR-4 materials with the dielectric constant of 4.4 and the thickness of 0.8 mm.
The working process of the invention is as follows: firstly, designing a dual-polarized antenna with an optimized metal reflecting surface; then, a proper AMC structure unit is designed to meet the condition that the phase of the corresponding frequency band is at-90 DEG 0 ～90 0 To (c) to (d); in order to improve the isolation between the ports, the square metal floor and the metal floor are connected through two metal short-circuit columns.
Compared with the prior art, the invention has the beneficial effects that:
(1) The low-profile dual-polarized base station antenna using the novel artificial magnetic conductor structure can improve the impedance bandwidth of the antenna by adopting 4 metal patches 1A, 2B, 3C and 4D;
(2) The invention can realize the reduction of the profile height of the antenna by adopting the novel AMC as the antenna reflecting surface; the height of the antenna of the invention is 17mm, about 0.13 lambda 0 (λ 0 Free wavelength corresponding to 2.2 GHz).
(3) The isolation between the antenna ports is improved by introducing the metal short circuit column between the square metal floor and the metal floor.
Drawings
Fig. 1 is a schematic diagram of a low-profile dual-polarized base station antenna structure using a novel artificial magnetic conductor structure according to the present invention; fig. 1 (a) is a schematic structural diagram of a front surface of an upper dielectric substrate of an antenna; fig. 1 (b) is a schematic front structural view of an antenna lower dielectric substrate; FIG. 1 (c) is a schematic diagram of a backside structure of an antenna lower dielectric substrate; FIG. 1 (d) is a schematic diagram of the front side of the AMC reflection surface structure, and FIG. 1 (e) is a schematic diagram of the AMC unit structure. Fig. 1 (f) is a side view of the antenna structure.
FIG. 2 is a graph of reflectance and isolation under different conditions simulated by the present invention; FIG. 2 (a) is a graph of the reflection coefficient of the antenna, and it can be seen that the bandwidth of the antenna is 1.69-2.71GHz; FIG. 2 (b) is a graph of antenna isolation, which can be seen to be less than-25 dB;
FIG. 3 is a simulated gain pattern of the present invention; FIG. 3 (a) shows. + -. 45 0 Polarized 1.7GHz directional diagram (left + 45) 0 Right is-45 0 ) FIG. 3 (b) shows. + -. 45 0 Polar 2.2GHz Pattern (left + 45) 0 Right is-45 0 ) FIG. 3 (c) shows. + -. 45 0 Polar 2.7GHz Pattern (left + 45) 0 Right is-45 0 )；
In the figure: 1 metal patch a,2 metal patch B,3 metal patch C,4 metal patch D,5 dielectric substrate a,6 metal patch E,7 metal patch F,8 non-metal via a,9 non-metal via B,10 metal via a,11 metal via B,12 non-metal via C,13 metal via C,14 metal via D,15 metal via E,16 metal via F,17 annular metal patch, 18 square metal floor, 19 non-metal via D,20 metal via G,21 non-metal via D,22 metal via H,23 non-metal via E,24 metal via I,25 metal via K,26 dielectric substrate B,27 metal patch G,28 metal patch H,29 metal patch I,30 metal patch J,31 dielectric substrate C,32 non-metal via F,33amc,34 non-metal via G,35 non-metal via H,36 dielectric substrate D,37 metal patch K,38 metal patch L,39 metal patch M,40 coaxial line a, 41B, 42 metal patch G, 43 metal patch B, 44 metal short-circuited column a,45 metal short circuited column B.
Detailed Description
The following detailed description of the embodiments of the invention is provided in connection with the drawings and the accompanying drawings.
Referring to fig. 1, the non-metallic vias 21D of the metal patches 29I are soldered to the outer conductor of the coaxial line 40A, 40AThe inner conductor is welded with the non-metal via hole 8A on the metal feed microstrip line 7F, and then the metal patch 7F is connected with the metal patch 27A through the metal via hole 22A and the dielectric substrates 5A and 26B. The nonmetal via 23E of the metal patch 30J is soldered to the outer conductor of the coaxial line 41B, the inner conductor of the coaxial line 41B is soldered to the nonmetal via 9B of the metal patch 6E, and then the metal patch 6E is connected to the metal patch 27G by passing through the medium substrates 5A and 26B through the metal via. Metal through holes 13C, 14D, 15E and 16F are formed in the center of the peripheral frame of the dielectric substrate 26B, metal patches 27G, 28H, 29I and 30J are connected with the annular metal patch 17, and when the coaxial lines 40A and 41B are electrified, the antenna generates +/-45 DEG 0 And (4) polarizing the wave. The electromagnetic wave generated by the antenna radiator is transmitted to the AMC reflecting surface below the antenna radiator and is reflected by the original path, and the reflected wave with the same phase as the incident wave is generated.
Fig. 2 is a graph of reflectance and isolation under different conditions simulated by the present invention. The antenna bandwidth is seen in fig. 2 (a) to be 1.69-2.71GHz. As can be seen from fig. 2 (b), when the metal short-circuit column is used, the isolation between the two ports of the antenna is less than-25 dB in the frequency band of 1.7-2.7 GHz.
Fig. 3 shows the 1.7GHz, 2.2GHz and 2.7GHz radiation patterns obtained by antenna simulation, and it is seen from fig. 3 that the antenna proposed by the present invention has a stable pattern.
The above examples are only for illustrating the technical idea and features of the present invention, and are only used for describing the present invention in detail, so that those skilled in the art can understand the content of the present invention and implement the present invention, and the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made in accordance with the teachings of the present invention are intended to be included within the scope of the present invention.

Claims (2)

1. A novel low-profile dual-polarized base station antenna is characterized by comprising a dual-polarized antenna radiation structure, a differential feed circuit, two metal short circuit columns and a novel AMC reflecting surface structure;
the dual-polarized antenna radiation structure comprises a dielectric substrate A (5), a dielectric substrate B (26), four equal-size square metal patches A (1), four equal-size square metal patches B (2), four equal-size square metal patches C (3), four equal-size square metal patches D (4) and an annular metal patch (17); the dielectric substrate A (5) is positioned above the dielectric substrate B (26), and a gap of a layer of metal patches is formed between the back surface of the dielectric substrate A (5) and the front surface of the dielectric substrate B (26); the four equal-size square metal patches A (1), the square metal patches B (2), the square metal patches C (3) and the square metal patches D (4) are respectively printed at four corners of the front surface of the dielectric substrate A (5), and the annular metal patches (17) are printed on four sides of the front surface of the dielectric substrate B (26); the medium substrate A (5) is provided with a non-metal through hole C (12), and the medium substrate B (26) is provided with a non-metal through hole D (19); a nonmetal through hole F (32) is formed in the dielectric substrate C (31), the centers of the nonmetal through hole C (12), the nonmetal through hole D (19) and the nonmetal through hole F (32) are on the same straight line, and the nylon column (43) penetrates through the nonmetal through hole C (12), the nonmetal through hole D (19) and the nonmetal through hole F (32);
the differential feed circuit comprises a square metal floor (18), a metal patch G (27), a metal patch H (28), a metal patch I (29), a metal patch J (30), a metal patch E (6), a metal patch F (7), a coaxial line A (40) and a coaxial line B (41); the square metal floor (18) is printed on the front surface of the dielectric substrate B (26), the center of the square metal floor (18) is superposed with the center of the dielectric substrate B (26), and metal through holes are formed in the square metal floor (18); the metal patches G (27), H (28), I (29) and J (30) are printed on the back of the dielectric substrate B (26), wherein the metal patches G (27) and H (28) are straight microstrip lines, the metal patches I (29) and J (30) are bent microstrip lines, the metal patches I (29) and J (30) are in a structure like a Chinese character 'ji', and metal through holes are formed in the two ends of each of the metal patches I (29) and J (30); the length of the metal patch I (29) is equal to that of the metal patch F (7) and that of the metal patch G (27); the length of the metal patch J (30) is equal to that of the metal patch H (28); one end of each of the metal patch G (27), the metal patch H (28), the metal patch I (29) and the metal patch J (30) is near the center of the dielectric substrate B (26), and the other end of each of the metal patches is arranged on the dielectric substrateB (26) the central positions of the four sides; the metal patch E (6) and the metal patch F (7) are printed on the front face of the dielectric substrate A (5), wherein the metal patch E (6) and the metal patch F (7) are straight microstrip lines, non-metal through holes are formed in the two ends of the metal patch F (7), the metal patch E (6) and the metal patch F (7) are vertically arranged at the center of the front face of the dielectric substrate A (5) along the length direction, and a gap is reserved between the metal patch E (6) and the metal patch F (7); the coaxial line A (40) penetrates through a non-metal via hole in the dielectric substrate C (31), the non-metal via hole at one end, close to the center of the dielectric substrate B (26), of the metal patch I (29) is welded with an outer conductor of the coaxial line A (40), an inner conductor of the coaxial line A (40) is welded with a non-metal via hole in the metal feed microstrip line F (7), and the metal via hole A (22) penetrates through the dielectric substrate A (5) and the dielectric substrate B (26) to connect the metal patch F (7) with the metal patch A (27); the non-metal via hole at one end of the metal patch J (30) close to the center of the dielectric substrate B (26) is welded with the outer conductor of the coaxial line B (41), the inner conductor of the coaxial line B (41) is welded with the non-metal via hole on the metal patch E (6), and the metal via hole passes through the dielectric substrate A (5) and the dielectric substrate B (26) to connect the metal patch E (6) with the metal patch G (27); the center positions of four sides of the dielectric substrate B (26) are provided with metal through holes, the metal patches G (27), H (28), I (29) and J (30) are connected with the annular metal patch (17), and the antenna generates +/-45 0 Polarized waves; the distributed capacitance is changed by adjusting the sizes of the square metal patch A (1), the square metal patch B (2), the square metal patch C (3) and the square metal patch D (4), so that the impedance bandwidth of the antenna is expanded;
the metal short circuit column A (44) and the metal short circuit column B (45) connect the square metal floor (18) and the metal floor (42) together, and improve the isolation between antenna ports;
the AMC reflecting surface (33) is a periodic structure; the AMC structural unit consists of a dielectric substrate D (36), a metal patch K (37), a metal patch L (38) and a metal patch M (39); the metal patches K (37) and the metal patches L (38) are printed on the front surface and the back surface of the medium substrate D (36); an air gap is arranged between the metal patch K (37) and the metal patch M (39), and the AMC structure is improved90 0 The bandwidth of the phase.
2. The novel low-profile dual-polarized base station antenna is characterized in that one end of the metal short-circuit column A (44) is welded with a metal via I (24) on a square metal floor (18), the metal short-circuit column A (44) passes through a non-metal via H (35) on a dielectric substrate C (31), and the other end of the metal short-circuit column A is welded on a metal floor (42) vertically corresponding to the metal via I (24); one end of the metal short-circuit column B (45) is welded with a metal through hole K (25) on the square metal floor (18), and the other end of the metal short-circuit column B is welded on a metal floor (42) which vertically corresponds to the metal through hole K (25).
CN202111324877.2A 2021-11-10 2021-11-10 Novel low-profile dual-polarized base station antenna Active CN114039203B (en)

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Publication number Priority date Publication date Assignee Title
CN105789875A (en) * 2016-04-13 2016-07-20 西安电子科技大学 Low-profile broadband dual polarized antenna
CN109687135A (en) * 2019-01-16 2019-04-26 重庆邮电大学 A kind of wideband dual polarized base station antenna unit suitable for 4G/5G mobile communication
CN110534891A (en) * 2019-09-10 2019-12-03 桂林电子科技大学 Broadband polarization adjustable antenna based on composite right/left-handed transmission line

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WO2012139079A2 (en) * 2011-04-07 2012-10-11 Colburn Joseph S Tunable impedance surfaces

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Publication number Priority date Publication date Assignee Title
CN105789875A (en) * 2016-04-13 2016-07-20 西安电子科技大学 Low-profile broadband dual polarized antenna
CN109687135A (en) * 2019-01-16 2019-04-26 重庆邮电大学 A kind of wideband dual polarized base station antenna unit suitable for 4G/5G mobile communication
CN110534891A (en) * 2019-09-10 2019-12-03 桂林电子科技大学 Broadband polarization adjustable antenna based on composite right/left-handed transmission line

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A Novel Dipole Configuration With Improved Out-of-Band Rejection and its Applications in Low-Profile Dual-Band Dual-Polarized Stacked Antenna Arrays;li min等;《IEEE Transactions on Antennas and Propagation 》;20201016;全文 *
基于AMC的低剖面双极化天线的设计;吴思雨等;《通信技术》;20190731;全文 *

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