CN111600121A - Decoupling patch antenna array - Google Patents
Decoupling patch antenna array Download PDFInfo
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- CN111600121A CN111600121A CN202010400386.0A CN202010400386A CN111600121A CN 111600121 A CN111600121 A CN 111600121A CN 202010400386 A CN202010400386 A CN 202010400386A CN 111600121 A CN111600121 A CN 111600121A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Abstract
The invention provides a decoupling patch antenna array, comprising: the first dielectric substrate is provided with at least a first patch antenna, a second patch antenna and a first decoupling feeder line coupled with the first patch antenna on one surface, a ground plate is arranged on one surface of the second dielectric substrate, and a plurality of feed ports and a first microstrip line are arranged on the other surface of the second dielectric substrate; the feed port feeds power to the first patch antenna through the probe, the other feed port feeds power to the first decoupling feed line through the probe, a first H-plane coupling field is generated between the first patch antenna and the second patch antenna, and a second H-plane coupling field is generated between the first decoupling feed line and the first patch antenna to counteract the first H-plane coupling field. The second H-plane coupling field generated by the first decoupling feeder and the first patch antenna is directly utilized to offset the first H-plane coupling field, so that mutual coupling among array units is reduced, isolation is improved, the implementation is simple, and the volume and complexity of the array are not additionally increased.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a decoupling patch antenna array.
Background
The patch antenna array has the advantages of simple structure (realized only by plating a metal layer on a dielectric substrate), low section, easy compatibility with an integrated circuit and the like, and is very suitable for being made into a conformal antenna applied to high-speed moving objects such as airplanes, rockets and the like. In the prior art, under the condition that the array pitch is limited, the mutual coupling between units is strong, the isolation degree is poor, and the isolation degree is generally improved by introducing a circuit element to consume the coupling energy. However, this approach increases the complexity of the patch antenna array and reduces the energy utilization.
Disclosure of Invention
The invention mainly aims to provide a decoupling patch antenna array, which improves the isolation between antenna units by introducing a method of canceling out a coupling field between patches by a decoupling line.
To achieve the above object, the present invention provides a decoupling patch antenna array, including:
the antenna comprises a first dielectric substrate, a second dielectric substrate and a first decoupling feeder line, wherein at least a first patch antenna, a second patch antenna and the first decoupling feeder line are arranged on one surface of the first dielectric substrate in a coupling mode, the first patch antenna and the second patch antenna are arranged at intervals, a ground plate is arranged on the other surface of the first dielectric substrate, an avoidance groove is formed in the first patch antenna, and the first decoupling feeder line is located in the avoidance groove;
the ground plate is arranged on one surface of the second dielectric substrate, and a plurality of feed ports and a first microstrip line are arranged on the other surface of the second dielectric substrate;
a plurality of probes, wherein the probes sequentially pass through the first dielectric substrate, the ground plate and the second dielectric substrate, one of the feed ports feeds power to the first patch antenna through the probes, the other feed port feeds power to the first decoupling feed line through the probes, one end of the first microstrip line is connected with the first decoupling feed line through the probes, and the other end of the first microstrip line is connected with the second patch antenna through the probes so as to feed the second patch antenna through the first microstrip line;
and a second H-plane coupling field is generated between the first decoupling feeder line and the first patch antenna so as to counteract the first H-plane coupling field.
Optionally, the first patch antenna and the second patch antenna are arranged at an interval along a first direction, and the first decoupling feeder is arranged at a side position of the first patch antenna parallel to the first direction.
Optionally, the first patch antenna has a plurality of first patch antennas, the plurality of first patch antennas are arranged at equal intervals along the first direction, and a plurality of first decoupling feed lines are arranged along the first direction, and the first decoupling feed lines correspond to the first patch antennas one to one.
Optionally, the decoupling patch antenna array further includes:
the third patch antenna and the second patch antenna are arranged at intervals along a second direction, and the feed port feeds power to the third patch antenna through the probe, wherein the first direction is vertical to the second direction;
the second decoupling feeder line and the third patch antenna generate a first E-plane coupling field, and the second decoupling feeder line and the third patch antenna generate a second E-plane coupling field to offset the first E-plane coupling field.
Optionally, the decoupling patch antenna array further includes:
one end of the second microstrip line is connected with the second decoupling feeder line through the probe, and the other end of the second microstrip line is connected with the first decoupling feeder line through the probe.
Optionally, the number of the third patch antennas is multiple, and the multiple third patch antennas are arranged at equal intervals along the first direction;
the number of the second decoupling feeder lines is multiple, and the second decoupling feeder lines correspond to the third patch antenna one to one.
Optionally, in the second direction, the third patch antennas are arranged side by side and spaced apart from the second patch antennas, so that the second patch antennas, the first patch antennas and the third patch antennas are arranged in an array.
Optionally, an avoiding groove is formed in the first patch antenna and the third patch antenna, the depth direction of the avoiding groove is parallel to the second direction, and the first decoupling feeder line and the second decoupling feeder line are arranged in the avoiding groove and are arranged at intervals in the avoiding groove.
Optionally, the connection position of the probe and the first decoupling feeder line is located on a symmetry axis of the first decoupling feeder line, and the symmetry axis of the first decoupling feeder line is parallel to the second direction;
the connecting position of the probe and the second decoupling feed line is located on a symmetry axis of the second decoupling feed line, and the symmetry axis of the second decoupling feed line is parallel to the second direction.
Optionally, the patch antenna is axisymmetric in shape.
The technical scheme of the invention is that a first patch antenna and a second patch antenna are arranged on one surface of a first dielectric substrate at intervals, a first decoupling feeder line and the first patch antenna are coupled, a ground plate is arranged on the other surface of the first dielectric substrate, an avoidance groove is arranged on the first patch antenna, the first decoupling feeder line is positioned in the avoidance groove, a first H-plane coupling field is generated between the first patch antenna and the second patch antenna, a second H-plane coupling field is generated between the first patch antenna and the first decoupling feeder line to counteract the first H-plane coupling field, the second H-plane coupling field generated by the first decoupling feeder line and the first patch antenna is directly utilized to counteract the first H-plane coupling field, rather than a circuit element is introduced to adjust the impedance matching of the decoupling patch antenna array so as to counteract the H-plane coupling of the first patch antenna and the second patch antenna, the occupied volume is small, the working bandwidth of the small-size decoupling patch antenna array can be improved, and the applicability of the decoupling patch antenna array is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded view of a decoupling patch antenna array according to the present invention;
fig. 2 is a structural diagram of a first patch antenna, a second patch antenna, a third patch antenna, a first decoupling feeder line and a second decoupling feeder line of the decoupling patch antenna array of the present invention;
fig. 3 is a schematic diagram of the first H-plane coupling field and the second H-plane coupling field of the decoupling patch antenna array according to the present invention;
fig. 4 is a schematic size diagram of a partial structure of the decoupling patch antenna array of the present invention;
fig. 5 is a schematic size diagram of another part of the structure of the decoupling patch antenna array of the present invention;
fig. 6 is a schematic size diagram of another partial structure of the decoupling patch antenna array of the present invention;
fig. 7 is a graph of the S parameter result of the H-plane coupling between the patch antennas of the decoupling patch antenna array of the present invention;
fig. 8 is a graph of the results of the S-parameters of the H-plane coupling generated by the second patch antenna of the decoupled patch antenna array of the present invention;
fig. 9 is a graph of the results of the S-parameters of the E-plane coupling between the patch antennas of the decoupled patch antenna array of the present invention;
fig. 10 is a second patch antenna pattern of the inventive decoupled patch antenna array;
fig. 11 is a first patch antenna pattern of the inventive decoupled patch antenna array;
fig. 12 is a third patch antenna pattern corresponding to the second patch antenna in the decoupled patch antenna array of the present invention;
fig. 13 is a diagram of the third patch antenna pattern corresponding to the first patch antenna in the array of decoupled patch antennas of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | First |
6 | |
| 2 | |
7 | |
| 3 | Second |
81 | |
| 41 | |
82 | |
| 42 | |
83 | |
| 43 | Third patch antenna | 9 | |
| 44 | Dodging groove | H1 | First H- |
| 45 | Feed point | H2 | Second H- |
| 51 | First decoupling feed line | y | A |
| 52 | Second decoupled feed line | x | Second direction |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 and 2, to achieve the above object, the present invention provides a decoupling patch antenna array, including: the antenna comprises a first dielectric substrate 1, wherein at least a first patch antenna 41, a second patch antenna 42 and a first decoupling feeder 51 coupled with the first patch antenna 41 are arranged on one surface of the first dielectric substrate 1, the first patch antenna 41 and the second patch antenna 42 are arranged at intervals, and a ground plate 2 is arranged on the other surface of the first dielectric substrate 1; a second dielectric substrate 3, wherein the ground plate 2 is disposed on one surface of the second dielectric substrate 3, and a plurality of feed ports 6 and a first microstrip line 81 (as shown in fig. 4) are disposed on the other surface of the second dielectric substrate 3; a plurality of probes 7, wherein the plurality of probes 7 sequentially pass through the first dielectric substrate 1, the ground plate 2 and the second dielectric substrate 3, one of the feeding ports 6 feeds power to the first patch antenna 41 through the probe 7, the other feeding port 6 feeds power to the first decoupling feeder 51 through the probe 7, one end of the first microstrip line 81 is connected with the first decoupling feeder 51 through the probe 7, and the other end of the first microstrip line 81 is connected with the second patch antenna 42 through the probe 7 so as to feed power to the second patch antenna 42 through the first microstrip line 81; as shown in fig. 3, a first H-plane coupling field H1 is generated between the first patch antenna 41 and the second patch antenna 42, and a second H-plane coupling field H2 is generated between the first decoupling feed line 51 and the first patch antenna 41 to cancel the first H-plane coupling field H1.
In this embodiment, the ground plate 2 is located between the first dielectric substrate 1 and the second dielectric substrate 3, the front and back sides of the ground plate 2 are respectively attached to the first dielectric substrate 1 and the second dielectric substrate 3, the first patch antenna 41, the second patch antenna 42 and the first decoupling feeder 51 are disposed on the surface of the first dielectric substrate 1 away from the ground plate 2, the first microstrip line 81 is attached to the surface of the second dielectric substrate 3 away from the ground plate 2, therefore, the first dielectric substrate 1 is spaced between the ground plate 2 and the first patch antenna 41, the second patch antenna 42 and the first decoupling feeder 51, so that the isolation effect is achieved, signal interference between the ground plate 2 and the first patch antenna 41, the second patch antenna 42 and the first decoupling feeder 51 is avoided, and the second dielectric substrate 3 is spaced between the first microstrip line 81 and the ground plate 2, so that signal interference between the first microstrip line 81 and the ground plate 2 is avoided.
As shown in fig. 5, the feeding port 6 and the first microstrip line 81 are located on the same surface, transmission holes 9 (shown in fig. 6) are formed in the first dielectric substrate 1, the ground plate 2 and the second dielectric substrate 3, and the probe 7 passes through the transmission holes 9 to feed the first patch antenna 41, the second patch antenna 42 and the first decoupling feeder 51. The first patch antenna 41 and the second patch antenna 42 are arranged at intervals, a first microstrip line 81 is connected between the first decoupling feeder line 51 and the second patch antenna 42, that is, an electrical signal of the second patch antenna 42 is obtained through the first decoupling feeder line 51 and then the first microstrip line 81, the first decoupling feeder line 51 can be connected with the feed port 6 only through the probe 7, and at this time, the feed port 6 is located on the second dielectric substrate 3 at a position corresponding to the first decoupling feeder line 51; of course, the first decoupling feed line 51 can also be connected to the feed port 6 via the probe 7 and the second microstrip line 82. The first microstrip line 81 and the second microstrip line 82 may extend meanderingly to adjust the length thereof, thereby adjusting the impedance matching of the entire decoupling patch antenna array.
When the feed port 6 feeds the second patch antenna 42 through the first decoupling feed line 51, the first patch antenna 41 and the first decoupling feed line 51 generate a second H-plane coupling field H2 to cancel the first H-plane coupling field H1 generated between the first patch antenna 41 and the second patch antenna 42, with a gap and a close distance (with respect to the distance between the first patch antenna 41 and the second patch antenna 42) between the first decoupling feed line 51 and the first patch antenna 41. The decoupling patch antenna array provided by the embodiment directly utilizes the first decoupling feeder 51 and the second H-plane coupling field H2 generated by the first patch antenna 41 to offset the first H-plane coupling field H1, instead of adjusting the impedance matching of the decoupling patch antenna array by introducing a circuit element, so as to offset the H-plane coupling of the first patch antenna 41 and the second patch antenna 42, the occupied volume is small, the operating bandwidth of the small-volume decoupling patch antenna array can be improved, and the applicability of the decoupling patch antenna array is improved.
In a further embodiment, as shown in fig. 2-4, the decoupling patch antenna array may be formed by attaching a plurality of second patch antennas 42 arranged at intervals along a first direction y (as shown in fig. 4) on the first dielectric substrate 1, that is, only one second patch antenna 42 may be arranged at a starting end, the second patch antennas 41 are arranged behind the second patch antennas 42, a first H-plane coupling field H1 is also generated due to signal interference between adjacent first patch antennas 41 arranged at intervals, at this time, a plurality of first decoupling feed lines 51 are arranged along the first direction y, the number of the first decoupling feed lines 51 is consistent with the number of the first patch antennas 41, and the positions of the first decoupling feed lines 51 correspond to the positions of the first patch antennas 41 one by one, that is, the first decoupling feed lines 51 are arranged in pairs with the first patch antennas 41, and each pair of the first patch antennas 41 and the first decoupling feed lines 51 generates a second H-plane coupling field H2 to cancel the first H-plane coupling field H1 (the first direction y is arranged along the first direction y) Generated between the first patch antennas 41 spaced apart from each other) and the number of feed ports 6 also corresponds to the number of first decoupling feed lines 51, i.e. each decoupling feed line is individually connected to a corresponding feed port 6. The plurality of first decoupling feed lines 51 in this embodiment are arranged parallel to the first direction y and are located at the side of the first patch parallel to the first direction y.
As an alternative embodiment, in the first patch antenna 41 and the first decoupling feed line 51 which are arranged in pair, the first decoupling feed line 51 is located right below the first patch antenna 41, that is, the symmetry axis of the first patch antenna 41 coincides with the symmetry axis of the first decoupling feed line 51, the connection position of the probe 7 and the first decoupling feed line 51 is located on the symmetry axis of the first decoupling feed line 51, and the connection position of the probe 7 and the second decoupling feed line 52 is located on the symmetry axis of the second decoupling feed line 52, so as to ensure the coupling effect of the second H-plane coupling field H2 and the first H-plane coupling field H1. In this embodiment, the symmetry axis of the first decoupling feed line 51 and the symmetry axis of the second decoupling feed line 52 are both parallel to the second direction x (perpendicular to the first direction y as shown in fig. 4).
In an alternative embodiment, the first patch antennas 41 and the second patch antennas 42 arranged in the first direction y are arranged equidistantly.
When more patch antennas need to be arranged on the decoupled patch antenna array, the third patch antennas 43 are arranged at intervals in the second direction x perpendicular to the first direction y. Signal interference is generated between the adjacent third patch antenna 43 and the second patch antenna 42, or between the adjacent third patch antenna 43 and the first patch antenna 41, so as to generate a first E-plane coupling field (not shown), a second decoupling feed line 52 is disposed at a side position of the third patch antenna 43 parallel to the first direction y, the second decoupling feed line 52 is connected to the feed port 6 through the probe 7, and may also be connected to the feed port 6 through the probe 7 and the third microstrip line 83. In this embodiment, the second decoupling feed line 52 and the first decoupling feed line 51 are connected to the same feed port 6, and the feed port 6, the second decoupling feed line 52, the first decoupling feed line 51, and the second patch antenna 42 are sequentially disposed, wherein positions that need to pass through the first dielectric substrate 1, the ground plate 2, and the second dielectric substrate 3 are connected by the probe 7. The third patch antenna 43 has a feed port 6 corresponding thereto for feeding it.
Based on the above embodiments, in a further embodiment, a plurality of third patch antennas 43 may be arranged at intervals in the first direction y. A first E-plane coupling field is generated between the second patch antenna 42 and the adjacent third patch antenna 43, the third patch is coupled with the second decoupling feed line 52 to generate a second E-plane coupling field (not shown) to cancel the first E-plane coupling field, signal interference is generated between the two adjacent third patch antennas 43 to generate a first H-plane coupling field H1, and a second H-plane coupling field H2 is generated between the second patch antenna 42 and the first decoupling feed line 51 to cancel the first H-plane coupling field H1. In the present embodiment, the second decoupling feed line 52 is provided in pair with the third patch antenna 43, and the second decoupling feed line 52 is located directly below the third patch antenna 43, that is, the center of the second decoupling feed line 52 is located on the symmetry axis of the third patch antenna 43.
The first patch antenna 41, the second patch antenna 42, the third patch antenna 43 and the fourth patch antenna may be provided with an avoidance slot 44 (as shown in fig. 3 and 4) for accommodating a first decoupling feed line 51 and/or a second decoupling feed line 52. The depth direction of the avoiding groove 44 is parallel to the second direction x, and the decoupling feeder is installed in the avoiding groove 44 and spaced from the avoiding groove 44.
As shown in fig. 5, a preferred set of structural dimensions is given: the first dielectric substrate 1, the second dielectric substrate 3 and the ground plate 2 all have a length of L × L, L is 143mm, a thickness of H is 1mm, and the dielectric constants of the first dielectric substrate 1 and the second dielectric substrate 3 are 2.2; the first patch antenna 41, the second patch antenna 42, and the third patch antenna 43 have the same size, and as shown in fig. 4, LP is 29.1mm, the depth Ln of the escape groove 44 is 6mm, and the groove width Wn is 5.5 mm; the height F of the feeding point 45 is 10.05 mm; as shown in fig. 6, the center-to-center distances of the adjacent patch antennas (including the first patch antenna 41, the second patch antenna 42, and the third patch antenna 43) are all D43 mm; the diameter D1 of the probe 7 is 1.3 mm; the diameter D2 of the transmission hole 9 is 2 mm; the line length LD of the first and second decoupling feed lines 52 is 6mm, and the width Wm is 3 mm. As shown in fig. 5, the third microstrip line 83 has the following dimensions: l1 ═ 5mm, the second microstrip line 82 size: l2-16.5 mm, L3-13 mm, L4-7 mm, L5-22 mm, L6-16.5 mm, first microstrip line 81 size: l7-6.5 mm, L8-25 mm, L9-10 mm, L10-14 mm, L11-7.5 mm, L12-10.5 mm, Lg-1.5 mm, and s-1 mm.
FIGS. 7-9 are S-parameter plots of simulated decoupled patch antenna arrays, from which it can be seen that the decoupled patch antenna arrays operate in the approximately 3.5GHz band, with a-10 dB impedance bandwidth of approximately 3.47 GHz-3.52 GHz; the H-plane coupling (S12 and S34) of the decoupled patch antenna array drops from-15 dB before decoupling to-40 dB, while the E-plane coupling (S13 and S24) drops from-19 dB before decoupling to about-40 dB, and the coupling of each patch antenna on the diagonal is below-20 dB. As can be seen from fig. 10-13, the decoupled patch antenna array has good directional radiation characteristics in the operating band.
Therefore, the first decoupling feeder line 51 and the second decoupling feeder line 52 are introduced and reasonably arranged with the feed probe 7, so that a coupling field generated among array units is weakened, and the isolation of the array units is effectively improved.
In a further embodiment, M first patch antennas 41 may be arranged in the first direction y, and N third patch antennas may be arranged in the second direction x, so as to form an M × N decoupled patch antenna array, which is not described in detail herein.
The patch antenna is axisymmetric, such as circular or equiaxed symmetric polygon of square, rectangle, regular hexagon.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A decoupled patch antenna array, comprising:
a first dielectric substrate, wherein one surface of the first dielectric substrate is at least provided with a first patch antenna, a second patch antenna and a first decoupling feeder line coupled with the first patch antenna, the first patch antenna and the second patch antenna are arranged at intervals, the other surface of the first dielectric substrate is provided with a ground plate, the first patch antenna is provided with an avoiding groove, the first decoupling feeder line is positioned in the avoiding groove
The ground plate is arranged on one surface of the second dielectric substrate, and a plurality of feed ports and a first microstrip line are arranged on the other surface of the second dielectric substrate;
a plurality of probes, wherein the probes sequentially pass through the first dielectric substrate, the ground plate and the second dielectric substrate, one of the feed ports feeds power to the first patch antenna through the probes, the other feed port feeds power to the first decoupling feed line through the probes, one end of the first microstrip line is connected with the first decoupling feed line through the probes, and the other end of the first microstrip line is connected with the second patch antenna through the probes so as to feed the second patch antenna through the first microstrip line;
and a second H-plane coupling field is generated between the first decoupling feeder line and the first patch antenna so as to counteract the first H-plane coupling field.
2. An array of decoupled patch antennas according to claim 1, wherein the first patch antenna is spaced from the second patch antenna along a first direction, the first decoupling feed line being disposed at a side of the first patch antenna parallel to the first direction.
3. An array of decoupled patch antennas according to any of claims 1-2, wherein said first patch antennas have a plurality of said first patch antennas arranged at equal intervals along said first direction and having a plurality of first decoupled feed lines disposed along said first direction, said first decoupled feed lines corresponding one-to-one with said first patch antennas.
4. The array of decoupled patch antennas of claim 3, further comprising:
the third patch antenna and the second patch antenna are arranged at intervals along a second direction, and the feed port feeds power to the third patch antenna through the probe, wherein the first direction is vertical to the second direction;
the second decoupling feeder line and the third patch antenna generate a first E-plane coupling field, and the second decoupling feeder line and the third patch antenna generate a second E-plane coupling field to offset the first E-plane coupling field.
5. The array of decoupled patch antennas of claim 4, further comprising:
one end of the second microstrip line is connected with the second decoupling feeder line through the probe, and the other end of the second microstrip line is connected with the first decoupling feeder line through the probe.
6. The array of decoupled patch antennas of claim 4, wherein the third patch antennas are plural, and the plural third patch antennas are arranged at equal intervals along the first direction;
the number of the second decoupling feeder lines is multiple, and the second decoupling feeder lines correspond to the third patch antenna one to one.
7. The array of decoupled patch antennas of claim 6, wherein in the second direction, the plurality of third patch antennas are arranged side-by-side and spaced apart from the second patch antenna and the plurality of first patch antennas such that the second patch antenna, the plurality of first patch antennas and the plurality of third patch antennas are arranged in an array.
8. The decoupling patch antenna array of claim 6 or 7, wherein an avoiding groove is formed in each of the first patch antenna and the third patch antenna, a depth direction of the avoiding groove is parallel to the second direction, and the first decoupling feed line and the second decoupling feed line are disposed in the avoiding groove and spaced from the avoiding groove.
9. An array of decoupling patch antennas according to claim 5 wherein the connection location of said probe to said first decoupling feed line is located on an axis of symmetry of the first decoupling feed line, the axis of symmetry of said first decoupling feed line being parallel to said second direction;
the connecting position of the probe and the second decoupling feed line is located on a symmetry axis of the second decoupling feed line, and the symmetry axis of the second decoupling feed line is parallel to the second direction.
10. An array of decoupled patch antennas according to claim 1, wherein the shape of the patch antennas is axisymmetric.
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| CN202010400386.0A CN111600121B (en) | 2020-05-12 | 2020-05-12 | Decoupling patch antenna array |
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| CN202010400386.0A CN111600121B (en) | 2020-05-12 | 2020-05-12 | Decoupling patch antenna array |
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| CN111600121B (en) | 2022-03-01 |
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