CN115732925A - Dual-polarized antenna array with millimeter wave dual-frequency respective feeding - Google Patents
Dual-polarized antenna array with millimeter wave dual-frequency respective feeding Download PDFInfo
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Abstract
A dual-polarized antenna array with millimeter wave dual-frequency respective feeding belongs to the technical field of 5G wireless communication and antennas. The antenna is formed by arranging and combining a plurality of antenna units with the same structure, and each antenna comprises two dielectric layers, three metal layers, two feed probes for low-frequency patch feeding, two feed probes for high-frequency patch feeding and two coupling feed branches. The two dielectric layers comprise an upper dielectric substrate A and a lower dielectric substrate B, and the three metal layers comprise a low-frequency annular metal patch, a high-frequency metal patch and a metal floor. The dual-frequency dual-band antenna adopts two laminated structures of the low-frequency annular metal patch and the high-frequency metal patch to realize dual-frequency work, different polarizations and different frequencies are respectively fed, and the burden of a millimeter wave circuit, particularly a filter, is reduced; the antennas with different frequency bands share the radiation unit, the antenna has compact structure, small volume and low section, and is suitable for the mobile phone frame taking a high-pass chip as an example; the antenna array directional diagram is stable, and the win-win of dual polarization, wide scanning angle and small volume is realized.
Description
Technical Field
The invention belongs to the technical field of 5G wireless communication and antennas, and relates to a dual-polarization millimeter wave communication laminated patch antenna array with dual-band separate feed.
Background
The transition from fourth generation (4G) mobile communication networks to fifth generation (5G) mobile communication, the millimeter wave technology has attracted more and more countries' attention as a key technology of 5G. Currently, the globally authorized 5G millimeter wave frequency band includes n258 (24.25-27.50 GHz), n257 (26.50-29.50 GHz), n261 (27.50-28.35 GHz) and n260 (37.0-40.0 GHz). China also authorizes its own millimeter wave communication band: 24.25-27.5 GHz and 37-43.5 GHz. The dual-band antenna has a greater advantage in coverage of a frequency band range. Meanwhile, as the functions supported by the smart phone are increasingly complex, the number of antennas is also increased, and the space provided for millimeter waves is very limited, so that how to design a millimeter wave antenna array with compact structure and high performance becomes a research hotspot. The loss of a propagation link of millimeter wave communication is large, and an antenna has the characteristic of high gain. Meanwhile, the terminal antenna also needs a wider coverage range, high gain and a wide scan angle, which all bring challenges to antenna design. Furthermore, due to the limitation of line-of-sight transmission (LOS), polarization mismatch is likely to occur in millimeter wave communication, and thus the dual-polarization characteristic is also very important for the millimeter wave antenna.
When the traditional dual-frequency antenna works, the feed port simultaneously excites dual-frequency band work, and due to the requirement of a back-end circuit, two frequency bands need to be processed independently, so that a filter is required to be added in the circuit to respectively filter out high-frequency resonance and low-frequency resonance, and the complexity and the cost of the system are increased. Therefore, the high-frequency resonance port and the low-frequency resonance port of the millimeter wave antenna are respectively fed, the radiator is shared, and the isolation between different frequencies is ensured, so that the important requirement for simplifying a millimeter wave circuit is met. However, the current millimeter wave antenna designs with separate feeding for high and low frequencies are still few.
The invention designs the laminated radiation patch, and the two working resonance points of the low-frequency antenna and the high-frequency antenna can be realized by respectively adjusting the sizes of the upper annular metal patch and the lower butterfly metal patch. The four feed ports can respectively realize low-frequency vertical polarization, low-frequency horizontal polarization, high-frequency vertical polarization and high-frequency horizontal polarization, and the isolation between high frequency and low frequency can be effectively improved by adding a blind hole structure and a through hole structure and using a capacitive coupling feed technology, so that the requirement on a filter in a subsequent radio frequency circuit is reduced. The antenna unit is applied to a1 x 4 linear array, and good beam scanning performance is realized.
Disclosure of Invention
The invention designs a millimeter wave antenna array which is applied to high-frequency and low-frequency separate feed of a mobile equipment terminal in order to reduce the burden of a radio frequency module of a millimeter wave terminal and realize a miniaturized, large-bandwidth and high-gain millimeter wave antenna. The antenna radiator is a laminated patch antenna with capacitive coupling feed, and dual-band and dual-polarization are realized by adding the blind holes, the via holes and the T-shaped feed branch structures, so that the isolation between orthogonal polarization antennas is ensured. And the 1 x 4 linear array formed by the antenna units realizes a wide array scanning angle.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a dual-polarized antenna array with millimeter wave dual-frequency respective feeding is formed by arranging and combining a plurality of antenna units with the same structure, wherein each antenna comprises two layers of dielectric layers, three layers of metal layers, two feeding probes for low-frequency patch feeding, two feeding probes for high-frequency patch feeding and two coupling feeding branches. The two dielectric layers comprise an upper dielectric substrate A16 and a lower dielectric substrate B17, and the three metal layers comprise a low-frequency annular metal patch 1, a high-frequency metal patch 2 and a metal floor 3.
The low-frequency annular metal patch 1 is located on the upper surface of the dielectric substrate a16, and the annular patch can be a circular ring, a square ring or an annular patch with other shapes. The high-frequency metal patch 2 is positioned on the upper surface of the lower dielectric substrate B17, and the lower dielectric substrate B17 is placed on the metal floor 3. The electrical length of the high-frequency metal patch 2 is smaller than that of the low-frequency annular metal patch 1, the high-frequency metal patch can be square, rectangular, circular, butterfly-shaped and the like, and clear limitation is not needed, so that the requirements on the performances of antenna bandwidth, frequency and the like are met. The low-frequency annular metal patch 1 is used for generating low-frequency resonance, and the low-frequency working frequency can be adjusted by adjusting the size of the patch 1; the high-frequency metal patch 2 is used to generate high-frequency resonance, and the high-frequency operating frequency can be adjusted by adjusting the patch size, the chamfer angle, and the like.
The metal floor 3 is provided with six through holes, wherein four through holes are respectively used for penetrating through four feeding probes, wherein the feeding probes 14 and 15 for feeding the high-frequency patch 2 can continuously penetrate through the dielectric substrate B17, the feeding probes for feeding the low-frequency patch 1 can continuously penetrate through the dielectric substrates B17 and A16, the other two through holes are metalized through holes 10 and 11, the metalized through holes 10 and 11 are connected with the lower-layer high-frequency patch 2 and the metal floor 3, and the isolation degree between different polarization ports of a low-frequency section can be improved.
The two coupling feed branches comprise a T-shaped branch A4 and a T-shaped branch B5, are positioned on the low-frequency annular metal patch 1, are not connected with the low-frequency annular metal patch 1, and are used for realizing capacitive coupling feed.
The two feeding probes for high-frequency patch feeding comprise a high-frequency horizontal polarization feeding unit 14 and a high-frequency vertical polarization feeding unit 15, the two feeding probes for low-frequency patch feeding comprise a low-frequency horizontal polarization feeding unit 12 and a low-frequency vertical polarization feeding unit 13, 12 and 13 are a pair of feeding probes which are distributed orthogonally, if the origin of coordinates is located at the central point of the metal floor 3, the feeding probes 12 are located on a positive half shaft of the horizontal axis of the metal floor 3, the feeding probes 13 are located on a positive half shaft of the vertical axis of the metal floor 3, and the distance from the feeding probes 12 to the central point of the metal floor 3 is equal to the distance from the feeding probes 13 to the central point of the metal floor 3; 14. 15 is a pair of orthogonally distributed feed probes, if the origin of coordinates is located at the central point of the metal floor 3, 14 is located on the negative half axis of the horizontal axis of the metal floor 3, 15 is located on the negative half axis of the vertical axis of the metal floor 3, and the distance from 14 to the central point of the metal floor 3 is equal to the distance from 15 to the central point of the metal floor 3. The feed probes 12 and 13 penetrate through the dielectric substrates B17 and A16 from the metal floor 3 to be directly connected with the coupling feed branches 4 and 5 without contacting with the high-frequency metal patch 2, and the capacitive coupling feed of the low-frequency metal patch 1 is realized through the coupling feed branches 4 and 5; the low-frequency impedance matching condition can be adjusted by adjusting the distance. The feed probes 14 and 15 penetrate from the metal floor 3 to the dielectric substrate B17 and are not directly connected with the high-frequency patch 2, so that capacitive coupling feed is realized. The orthogonally distributed feed probes 12, 13 and 14,15 can excite antennas of different polarizations in the respective frequency bands. The capacitively coupled feed may cancel the additional inductance introduced by the quadrature coaxial feed.
Four metallized blind holes A6, B7, C8 and D9 are arranged on the dielectric substrate B17, the four blind holes are positioned at four corners of the antenna unit, the blind holes penetrate through the dielectric 16 but do not penetrate through the dielectric 17, and a distance is reserved between the blind holes and the lower surface of the dielectric 17. The blind hole can improve the isolation between the ports with different polarizations in a high frequency band.
Furthermore, the metal patch 1 is of a square annular structure, so that the upper metal patch 1 is prevented from blocking normal radiation of the lower metal patch 2. The high-frequency metal patch 2 is butterfly-shaped.
Further, the coupling feed branches 4 and 5 may be T-shaped, L-shaped, or rectangular.
Furthermore, the relative dielectric constants of the two dielectric substrates a16 and B17 affect the operating frequency of the antenna, and can be adjusted according to the frequency requirement.
Furthermore, in the antenna array, the arrangement direction of each antenna unit is the same, and a T-shaped slot is etched on the metal floor 3, so that the gain of the antenna array can be improved, and the beam scanning performance can be improved.
The application of the invention is as follows: in order to increase the antenna gain, N dual-polarized stacked patch antenna units respectively feeding dual frequencies form a group of 1 × N antenna linear arrays, where the N stacked patch antenna arrays are arranged in the same manner, as shown in fig. 5, the metal floor may be kept intact or may adopt a notch structure, and the notch structure may increase the gain of the antenna array and improve the beam scanning performance. Large high gain and wide angle scanning is achieved by phased arrays. The antenna array obtained by final design can reduce the filter requirement in the circuit and has the advantages of small volume, compact structure, wide dual-polarized frequency band, large scanning angle and the like.
The working process of the invention is as follows: the external coaxial feed probes 12 and 13 respectively perform capacitive coupling feed on the annular metal patch 1 through the T-shaped branches A4 and B5, radio-frequency signals enter the low-frequency annular metal patch 1 through capacitive coupling, the resonant frequency of the low-frequency annular metal patch 1 is about millimeter wave low frequency, and surface currents are distributed on two sides of a metal ring of a feed port. The external coaxial feed probes 14 and 15 perform capacitive coupling feed on the high-frequency metal patch 2, radio-frequency signals enter the high-frequency metal patch 2 through capacitive coupling, the resonance frequency of the high-frequency metal patch 2 is about millimeter wave high frequency, and surface current is distributed on the edge of the patch. The blind hole structures A6, B7, C8 and D9 and the through hole structures A10 and B11 increase the isolation between the feed ports of the antenna, and the isolation between the feed ports is higher than 10dB.
Compared with the prior art, the invention has the beneficial effects that:
(1) The millimeter wave antenna unit for the 5G mobile terminal adopts two laminated structures of the low-frequency annular metal patch 1 and the high-frequency metal patch 2 to realize double-frequency work, and feeds electricity with different polarizations and different frequencies respectively, so that the burden of a millimeter wave circuit, particularly a filter, is reduced.
(2) The antennas in different frequency bands share the radiation unit, the antenna has compact structure, small volume and low section, and is suitable for the mobile phone frame taking a high-pass chip as an example. The antenna array directional diagram is stable, and the win-win of dual polarization, wide scanning angle and small volume is realized.
Drawings
Fig. 1 is a schematic view of a split structure of a millimeter wave dual-frequency separately fed dual-polarized antenna unit according to the present invention;
fig. 2 is a schematic diagram of a millimeter wave dual-frequency separately fed dual-polarized antenna unit proposed by the present invention;
fig. 3 is a side view of a millimeter wave dual-band separately fed dual-polarized antenna unit according to the present invention;
fig. 4 is a schematic plan view of an upper annular metal patch of a millimeter wave dual-frequency separately fed dual-polarized antenna unit according to the present invention;
fig. 5 is a schematic plan view of a lower-layer high-frequency metal patch of a millimeter-wave dual-frequency separately-fed dual-polarized antenna unit according to the present invention;
fig. 6 is a schematic structural diagram of a dual-polarized antenna array with millimeter wave dual-frequency separate feeding according to the present invention; fig. 6 (a) is a schematic front view (hiding a part of the dielectric layer) of the dual-polarized antenna array with millimeter wave dual-frequency separate feeding according to the present invention; fig. 6 (b) is a rear view of a dual-polarized antenna array with millimeter wave dual-frequency separate feeding according to the present invention;
fig. 7 is an S parameter of a millimeter wave dual-frequency separately fed dual-polarized antenna unit according to the present invention;
fig. 8 is a two-dimensional radiation pattern of a millimeter wave dual-frequency separately fed dual-polarized antenna unit according to the present invention; fig. 8 (a) is the radiation patterns of the E-plane and the H-plane of 28GHz when the millimeter wave dual-band separately-fed dual-polarized antenna unit provided by the present invention is fed at the low-frequency feed port; fig. 8 (b) is the directional diagrams of the E-plane and the H-plane of 39GHz when the millimeter wave dual-frequency separately fed dual-polarized antenna unit provided by the present invention is fed at the high-frequency feeding port;
fig. 9 is S parameter of the dual-polarized 4-element antenna array with millimeter wave dual-frequency separate feeding according to the present invention; fig. 9 (a) shows port reflection coefficients of a dual-polarized 4-element antenna array with millimeter wave dual-frequency separate feeding according to the present invention. Fig. 9 (b) shows transmission coefficients between some ports of the dual-polarized 4-element antenna array with millimeter wave dual-frequency separate feeding according to the present invention;
fig. 10 (a) - (d) show beam scan angles of dual-polarized 4-element antenna array with millimeter wave dual-frequency separate feeding in the case of 28GHz horizontal polarization port feeding, 28GHz vertical polarization port feeding, 39GHz horizontal polarization port feeding, and 39GHz vertical polarization port feeding in the present invention;
in the figure: the low-frequency metal patch type antenna comprises a low-frequency annular metal patch 1, a high-frequency metal patch 2, a metal floor 3, a branch knot A with a shape of 4T, a branch knot B with a shape of 5T, a blind hole A with a shape of 6T, a blind hole B with a shape of 7T, a blind hole C with a shape of 8T, a blind hole D with a shape of 9T, a through hole A with a shape of 10, a through hole B with a shape of 11, a low-frequency horizontal polarization feed unit 12, a low-frequency vertical polarization feed unit 13, a high-frequency horizontal polarization feed unit 14, a high-frequency vertical polarization feed unit 15, a dielectric substrate A16 and a dielectric substrate B17.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in connection with the drawings and the accompanying drawings.
Referring to fig. 1, 2 and 3, the millimeter wave dual-frequency separately-fed dual-polarized antenna unit is composed of two layers of dielectric substrates, a metal floor, two antenna radiation patch units, four blind holes, two via holes, two T-shaped branches and a feed structure, wherein the antenna radiation unit includes a metal ring patch 1 and a butterfly metal patch 2. The annular metal patch 1 is arranged on the upper surface of the upper-layer medium substrate A16, the butterfly-shaped metal patch 2 is arranged on the upper surface of the lower-layer medium substrate B17, and the lower surface of the lower-layer medium substrate B17 is the metal floor 3. Blind holes 6, 7, 8, 9 are located at the four corners of the antenna element, penetrate through the dielectric 16, but not through the dielectric 17, and are at a distance of 0.236mm from the lower surface of the dielectric 17. The through holes 10 and 11 are connected with the butterfly-shaped metal patch 2 and the metal floor 3 at the lower layer and are 0.8mm away from the center point of the butterfly-shaped patch 2. The feed probes 12 and 13 are respectively positioned in the horizontal direction and the vertical direction of the antenna unit and are 1.9mm away from the central point of the upper-layer annular metal patch 1; the feed probes 14 and 15 are respectively positioned in the horizontal direction and the vertical direction of the antenna unit and are 0.7mm away from the central point of the lower butterfly metal patch 2. The horizontal and vertical dual-polarization characteristics of the antenna are realized by adopting an orthogonal distribution feed mode. The two T-shaped branches 4 and 5 are located on the plane where the upper-layer annular metal patch 1 is located and are respectively used for connecting the low-frequency feed probes 12 and 13 and the annular metal patch 1. The annular metal patch 1 and the butterfly metal patch 2 work in the low-frequency and high-frequency range of millimeter waves respectively, and the antenna resonance point can be adjusted by adjusting the size of the patches. The T-shaped branches 4 and 5 are not in direct contact with the annular metal patch 1, but keep a distance of 0.1 mm; on the lower butterfly metal patch 2, a circle with a radius slightly larger than that of the probe is cut off at the center of the feed probe, and the two modes realize capacitive coupling feed to offset extra inductance introduced by orthogonal coaxial feed.
The overall size of the millimeter wave dual-frequency separately fed dual-polarized antenna unit is about 5 multiplied by 1.3mm 3 . Outer length L of metal patch 1 1 2.5mm, rectangular patch length L cut off 2 Is 1.85mm. Outer length L of metal patch 2 3 2.2mm, radius R of the circle chamfered at four right angles 3 Is 0.7mm. Diameter R of four blind holes 6, 7, 8, 9 1 Is 0.6mm. The radii of the two via holes 10, 11 are 0.15mm. In order to realize a coaxial capacitance feed mode, a radius R is dug at the center of a probe circle of the lower layer patch 2 2 Is a circle of 0.2 mm; distance W between upper layer patch 1 and T-shaped branch 1 Is 0.1mm. The dielectric substrate A16 and the dielectric substrate B17 are made of TLY-5, the relative dielectric constant is 2.2, the loss tangent angle is 0.0009, and the thicknesses are 0.254mm and 1.016mm respectively.
The dual-frequency respectively fed dual-polarized millimeter wave laminated patch antenna units are fed through the coaxial connectors, and the obtained S parameters are shown in fig. 6. It can be seen from the figure that the antenna unit generates resonance points at about 28GHz in the low frequency band and about 38GHz in the high frequency band, the-10 dB working frequency band ranges from 24.5 GHz to 30GHz and from 36 GHz to 43.8GHz, the port isolation in the frequency band is greater than 10dB, and the dual-band broadband characteristic is realized.
Fig. 8 (a) - (b) show the radiation patterns of the E-plane and the H-plane of the millimeter wave dual-frequency separately fed dual-polarized antenna unit at 28GHz and 38GHz, which shows that the radiation of the antenna unit is radiation in the zenith direction, and the gain is greater than 5dB.
Fig. 6 (a) - (b) are schematic structural diagrams (hiding the upper dielectric layer) of the millimeter wave dual-frequency separately fed dual-polarized antenna array according to the present invention. The array is formed by arranging the antenna units in a1 multiplied by 4 mode, a T-shaped gap is etched on a metal floor, and the transverse length L of the T-shaped gap 5 Is 1.6mm, and has a longitudinal length L 6 Is 0.9mm, and has a width W 2 Is 0.2mm. The T-shaped slot can improve the gain of the antenna array and improve the scanning performance of the array beam. The overall dimensions of the array are 20X 5X 1.3mm 3 . In order to improve the antenna gain, 4 millimeter wave dual-frequency dual-polarized antenna units respectively fedForm a group of 1 × 4 antenna linear arrays, wherein, the 4 laminated patch antenna units are arranged identically, and the distance between the antenna units is 5mm. Higher gain and wide angle scanning is achieved by a phased array. The antenna array obtained by final design has the advantages of small volume, compact structure, wide dual-polarization frequency band and large scanning angle.
Fig. 9 is the result of S-parameters of the dual-polarized antenna array fed with millimeter-wave dual-frequency separately as shown in fig. 6 proposed by the present invention, and fig. 9 (a) is the antenna array port reflection coefficient; fig. 9 (b) shows transmission coefficients between antenna array ports. The antenna array can work at 26-29.2 GHz and 36.2-42.8 GHz, and the isolation between ports is better than 10dB.
Fig. 10 (a) - (d) show the results of the beam scan angles of the dual-frequency separately fed dual-polarized stacked patch antenna array shown in fig. 6 when the dual-frequency separately fed dual-polarized antenna array is fed through the low-frequency 28GHz horizontal polarized feed port, the low-frequency 28GHz vertical polarized feed port, the high-frequency 39GHz horizontal polarized feed port, and the high-frequency 39GHz vertical polarized feed port, where the 3dB scan angles are ± 50 °, ± 50 °, -45 ° -31 °, and-30 ° -36 °, respectively.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (6)
1. A dual-polarized antenna array with millimeter wave dual-frequency respective feeding is characterized in that the dual-polarized antenna array is formed by arranging and combining a plurality of antenna units with the same structure, and each antenna comprises two layers of dielectric layers, three layers of metal layers, two feeding probes for low-frequency patch feeding, two feeding probes for high-frequency patch feeding and two coupling feeding branches; the two dielectric layers comprise an upper dielectric substrate A (16) and a lower dielectric substrate B (17), and the three metal layers comprise a low-frequency annular metal patch (1), a high-frequency metal patch (2) and a metal floor (3);
the low-frequency annular metal patch (1) is positioned on the upper surface of the dielectric substrate A (16) and used for generating low-frequency resonance, and the low-frequency working frequency can be adjusted by adjusting the size of the patch (1); the high-frequency metal patch (2) is positioned on the upper surface of the lower dielectric substrate B (17) and used for generating high-frequency resonance, the high-frequency working frequency can be adjusted by adjusting the patch size, the chamfer angle and the like, and the lower dielectric substrate B (17) is placed on the metal floor (3); the electrical length of the high-frequency metal patch (2) is smaller than that of the low-frequency annular metal patch (1);
the metal floor (3) is provided with six through holes, wherein the four through holes are respectively used for penetrating through four feed probes, the feed probes (14) and (15) for feeding the high-frequency metal patch (2) can continuously penetrate through the dielectric substrate B (17), the feed probes for feeding the low-frequency annular metal patch (1) can continuously penetrate through the dielectric substrates B (17) and A (16), the other two through holes are metalized through holes (10) and (11), the high-frequency metal patch (2) and the metal floor (3) are connected through the metalized through holes (10) and (11), and the isolation degree between different polarized ports of a low-frequency band can be improved;
the two coupling feed branches comprise a T-shaped branch A (4) and a T-shaped branch B (5), are positioned on the low-frequency annular metal patch (1), are not connected with the low-frequency annular metal patch (1), and are used for realizing capacitive coupling feed;
the two feed probes for high-frequency patch feed comprise a high-frequency horizontal polarization feed unit (14) and a high-frequency vertical polarization feed unit (15), and the two feed probes for low-frequency patch feed comprise a low-frequency horizontal polarization feed unit (12) and a low-frequency vertical polarization feed unit (13); wherein, the feed probes (12, 13), the feed probes (14, 15) are orthogonally distributed; the feed probes (12) and (13) penetrate through the dielectric substrates B (17) and A (16) from the metal floor (3) and are directly connected with the coupling feed branches (4) and (5) and are not contacted with the high-frequency metal patch (2), and capacitive coupling feed of the low-frequency metal patch (1) is realized through the coupling feed branches (4) and (5); the low-frequency impedance matching condition can be adjusted by adjusting the distance; the feed probes (14) and (15) penetrate through the dielectric substrate B (17) from the metal floor (3) and are not directly connected with the high-frequency metal patch (2) to realize capacitive coupling feed; the orthogonally distributed feed probes (12), (13) and (14), (15) can excite antennas with different polarizations of corresponding frequency bands; the capacitive coupling feed can counteract the extra inductance introduced by the orthogonal coaxial feed;
four metalized blind holes are arranged at four top angles of the dielectric substrate B (17), and four through holes are arranged at positions, corresponding to the blind holes, on the dielectric substrate A (16).
2. A millimeter wave dual-frequency respectively fed dual-polarized antenna array according to claim 1, wherein said low frequency annular metal patch (1) is a circular ring, a square ring or an annular shape with other shapes.
3. A millimeter wave dual-frequency separately fed dual-polarized antenna array according to claim 1, wherein the high-frequency metal patches (2) may be square, rectangular, circular, or butterfly in shape.
4. A millimeter wave dual-frequency separately fed dual-polarized antenna array according to claim 2 or 3, wherein the metal patches (1) are of a square ring structure, so as to prevent the upper metal patches (1) from blocking the normal radiation of the lower metal patches (2); the high-frequency metal patch (2) is butterfly-shaped.
5. A millimeter wave dual-band split feed dual-polarized antenna array according to claim 1, wherein the coupling feed branches (4), (5) are T-shaped, L-shaped, or rectangular.
6. The dual-polarized antenna array for millimeter wave dual-frequency separate feeding according to claim 1, wherein in the antenna array, the arrangement direction of each antenna unit is the same, and T-shaped slits are etched on the metal floor (3), so that the gain of the antenna array can be improved, and the beam scanning performance can be improved.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914446A (en) * | 2023-08-08 | 2023-10-20 | 南通至晟微电子技术有限公司 | High-frequency ratio dual-beam common-caliber antenna |
| CN117335169A (en) * | 2023-09-07 | 2024-01-02 | 苏州欣天盛科技有限公司 | Dual-frequency dual-circular polarization transmission array antenna and method for 5G millimeter wave system |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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2022
- 2022-12-05 CN CN202211546836.2A patent/CN115732925A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914446A (en) * | 2023-08-08 | 2023-10-20 | 南通至晟微电子技术有限公司 | High-frequency ratio dual-beam common-caliber antenna |
| CN116914446B (en) * | 2023-08-08 | 2024-04-16 | 南通至晟微电子技术有限公司 | High-frequency ratio dual-beam common-caliber antenna |
| CN117335169A (en) * | 2023-09-07 | 2024-01-02 | 苏州欣天盛科技有限公司 | Dual-frequency dual-circular polarization transmission array antenna and method for 5G millimeter wave system |
| CN117335169B (en) * | 2023-09-07 | 2024-04-19 | 苏州欣天盛科技有限公司 | Dual-frequency dual-circular polarization transmission array antenna and method for 5G millimeter wave system |
| CN117353047A (en) * | 2023-10-10 | 2024-01-05 | 广州程星通信科技有限公司 | Broadband wide-angle scanning phased array antenna unit and array thereof |
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