CN211789536U - Multimode broadband filtering antenna and wireless communication equipment - Google Patents
Multimode broadband filtering antenna and wireless communication equipment Download PDFInfo
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- CN211789536U CN211789536U CN202020434741.1U CN202020434741U CN211789536U CN 211789536 U CN211789536 U CN 211789536U CN 202020434741 U CN202020434741 U CN 202020434741U CN 211789536 U CN211789536 U CN 211789536U
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Abstract
The utility model discloses a multimode broadband filtering antenna and wireless communication equipment, the antenna includes first metal level, first substrate integrated waveguide, second metal level, the integrated waveguide of second substrate and the metal floor that from the top down set gradually, first metal level is being provided with the radiation gap near both sides edge symmetry, the second metal level is being provided with the coupling gap near both sides edge symmetry, and is provided with four on the second metal level and matches the gap, the center department bilateral symmetry of the integrated waveguide of second substrate is provided with the difference feed through-hole, the metal floor is provided with circular gap on the corresponding position of difference feed through-hole. The utility model discloses the antenna adopts the excitation mode of difference feed, excites a plurality of modes and merges it and form the broadband antenna, and the energy is through controlling both sides coupling gap and coupling to top radiation gap radiation, can realize the filtering effect, can also reduce the antenna array distance, improves the directional diagram sidelobe.
Description
Technical Field
The utility model relates to an antenna, especially a multimode broadband filtering antenna and wireless communication equipment belong to wireless communication antenna technical field.
Background
With the development of modern wireless communication technology, Substrate Integrated Waveguide (SIW) technology is increasingly applied to the microwave field. Especially, the antenna based on the SIW not only has the characteristics of low loss and high power capacity of the traditional metal cavity, but also does not have the defects of large size and high weight, is easy to integrate with other microwave devices, and is an important technology in the microwave millimeter wave antenna.
In practical application, one terminal device is generally required to be capable of covering multiple frequency bands, and compared with the situation that multiple integrated antennas work simultaneously or in a switching mode in one device, the broadband antenna can well meet the requirement, the size required by an antenna part is reduced, the antenna structure is simplified, and the miniaturization and cost reduction of the terminal device are facilitated.
The filtering antenna comprehensively considers the antenna and the filter at the front end of the radio frequency system, so that the antenna has the function of transmitting or receiving signals, and has the filtering effect of the filter, and the integration level of the radio frequency system is greatly improved; and often need to increase extra impedance matching network between antenna and the wave filter to avoid the performance degradation that the connection mismatch between antenna and the wave filter caused, this structure is then saved to the use of filtering antenna, has further reduced the loss of system, has promoted the miniaturization of system.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a multimode broadband filtering antenna and wireless communication equipment, this antenna adopt the excitation mode of difference feed, arouse a plurality of modes and merge it and form the broadband antenna, and the energy is through controlling both sides coupling gap and coupling to top radiation gap radiation, can realize the filtering effect, can also reduce the antenna array distance, improves the directional diagram side lobe.
An object of the utility model is to provide a multimode broadband filtering antenna.
Another object of the present invention is to provide a wireless communication device.
The purpose of the utility model can be achieved by adopting the following technical scheme:
the utility model provides a multimode broadband filtering antenna, includes first metal level, first substrate integrated waveguide, second metal level, second substrate integrated waveguide and the metal floor that from the top down set gradually, first metal level is being close to both sides edge symmetry and is being provided with the radiation gap, the second metal level is being close to both sides edge symmetry and is being provided with the coupling gap, and the center department bilateral symmetry of second metal level is provided with the matching gap, the center department bilateral symmetry of second substrate integrated waveguide is provided with the difference feed through-hole, the metal floor is provided with circular gap on the corresponding position of difference feed through-hole.
Further, the first substrate-integrated waveguide comprises a first dielectric substrate, and the second substrate-integrated waveguide comprises a second dielectric substrate;
four rows of first metalized through holes are formed in the peripheral edges of the first medium substrate and the second medium substrate, two rows of symmetrical second metalized through holes are further formed in the space defined by the four rows of first metalized through holes of the first medium substrate, and third metalized through holes distributed in an arc shape are further symmetrically formed in two sides of the space defined by the four rows of first metalized through holes of the second medium substrate;
four rows of first through holes corresponding to the four rows of first metalized through holes on the first medium substrate and the second medium substrate are arranged at the peripheral edges of the first metal layer, the second metal layer and the metal floor; the first metal layer and the second metal layer are provided with two rows of second through holes at the corresponding positions of the two rows of second metallized through holes; third through holes are formed in the second metal layer and the metal floor at positions corresponding to the third metalized through holes; and the second metal layer is provided with a fourth through hole at the corresponding position of the differential feed through hole.
Furthermore, the number of the third metalized through holes is eight;
the four third metalized through holes are arranged on the first side in the space surrounded by the four rows of the first metalized through holes of the second medium substrate and are positioned between the coupling gap at the edge of the first side of the second metal layer and the matching gap at the first side of the center of the second metal layer;
and the other four third metalized through holes are arranged on the second side in the space surrounded by the four rows of the first metalized through holes of the second medium substrate and are positioned between the coupling gap at the edge of the second side close to the second metal layer and the matching gap at the second side at the center of the second metal layer.
Furthermore, in each row of first metalized through holes, the diameter of each first metalized through hole is 1 mm-3 mm, and the distance between every two adjacent first metalized through holes is 3 mm-5 mm;
in each row of second metalized through holes, the diameter of each second metalized through hole is 1 mm-3 mm, and the distance between every two adjacent second metalized through holes is 3 mm-5 mm.
Furthermore, the first dielectric substrate and the second dielectric substrate are made of the same material, the thickness of the first dielectric substrate is 1 mm-3 mm, the dielectric constant of the first dielectric substrate is 2.2, and the dielectric loss angle of the first dielectric substrate is 0.001.
Furthermore, the coupling gap of the second metal layer close to the first side edge is located at a position adjacent to the first through hole at the first side edge of the second metal layer;
the coupling gap of the second metal layer close to the second side edge is located at the position adjacent to the row of the first through holes at the second side edge of the second metal layer.
Furthermore, the radiation gap of the first metal layer close to the first side edge is located between the first through hole at the first side edge of the first metal layer and the row of second through holes;
the radiation gap of the first metal layer close to the second side edge is positioned between the row of first through holes and the other row of second through holes at the second side edge of the first metal layer.
Furthermore, the number of the matching gaps is four, two of the matching gaps are arranged on the first side of the center of the second metal layer, and the other two matching gaps are arranged on the second side of the center of the second metal layer.
Furthermore, the two matching gaps on the first side of the center of the second metal layer are respectively a first matching gap and a second matching gap, the first matching gap and the second matching gap are respectively located on two sides of the differential feed through hole on the first side of the center of the second substrate integrated waveguide, and the length of the second matching gap is greater than that of the first matching gap;
the two matching gaps on the second side of the center of the second metal layer are respectively a third matching gap and a fourth matching gap, the third matching gap and the fourth matching gap are respectively positioned on two sides of the differential feed through hole on the second side of the center of the second substrate integrated waveguide, and the length of the third matching gap is greater than that of the fourth matching gap;
the first matching gap and the fourth matching gap are the same in length, and the second matching gap and the third matching gap are the same in length.
Furthermore, the circle centers of the circular slot and the corresponding differential feed through hole are the same point, and the diameter of the circular slot is larger than that of the corresponding differential feed through hole.
Furthermore, the diameter of the differential feed through hole is 1 mm-2 mm, and the diameter of the circular slot is 4 mm-5 mm.
The utility model discloses a further purpose can reach through taking following technical scheme:
a wireless communication device comprises the multimode broadband filtering antenna.
The utility model discloses for prior art have following beneficial effect:
1. the utility model discloses the antenna is formed by stacking from top to bottom first substrate integrated waveguide and the integrated waveguide of second substrate, adopts differential feed structure, guarantees antenna structure symmetry, and the directional diagram is stable to introduce two pairs of matching gaps on the second metal level between the integrated waveguide of first substrate and the integrated waveguide of second substrate, greatly optimized the antenna matching, and every pair high order mode of can adjusting alone to matching the gap, make structural performance simply controllable.
2. The utility model discloses the antenna introduces two rows of metallization through-holes in addition on the integrated waveguide of first substrate, can encourage required mode, the integrated waveguide of substrate is folded in the simulation to introduce the metallization through-hole that is the arc and distributes on the integrated waveguide of second substrate, can adjust better and remove the low order mould, close and form the broadband with higher order mould.
3. The utility model discloses the antenna has adopted the principle of folding substrate integrated waveguide, and energy path returns radiation gap department external radiation from lower floor's cavity through coupling gap coupling to upper cavity toward the inflection, has reduced radiating element's array distance, has improved the side lobe of directional diagram, and has introduced the filtering effect.
Drawings
Fig. 1 is the overall schematic diagram of the multimode broadband filtering antenna according to the embodiment of the present invention.
Fig. 2 is a schematic diagram of a first metal layer of the multimode broadband filter antenna according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a second metal layer of the multimode broadband filter antenna according to an embodiment of the present invention.
Fig. 4 is a schematic view of a metal floor of a multimode broadband filter antenna according to an embodiment of the present invention.
Fig. 5 is a simulation graph of return loss of the multimode broadband filtering antenna according to the embodiment of the present invention.
Fig. 6 is a simulation curve diagram of the gain of the multimode broadband filtering antenna according to the embodiment of the present invention.
Fig. 7 is a simulation graph of the directional diagram of the multimode broadband filtering antenna at 4.8GHz according to the embodiment of the present invention.
Fig. 8 is a simulation graph of the directional diagram of the multimode broadband filtering antenna at 5.2GHz according to the embodiment of the present invention.
Fig. 9 is a simulation graph of the directional diagram of the multimode broadband filtering antenna at 5.5GHz according to the embodiment of the present invention.
Wherein 1-a first metal layer, 2-a first substrate integrated waveguide, 3-a second metal layer, 4-a second substrate integrated waveguide, 5-a metal floor, 6-a first dielectric substrate, 7-a second dielectric substrate, 8-a first metalized via, 9-a first differential feed via, 10-a second differential feed via, 11-a second metalized via, 12-a third metalized via, 13-a first via, 14-a second via, 15-a third via, 16-a fourth via, 17-a first radiating slot, 18-a second radiating slot, 19-a first coupling slot, 20-a second coupling slot, 21-a first matching slot, 22-a second matching slot, 23-a third matching slot, 24-a fourth matching slot, 25-first circular slit, 26-second circular slit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example (b):
as shown in fig. 1 to 4, the present embodiment provides a multimode broadband filter antenna based on a substrate integrated waveguide, which can be applied to a wireless communication device, and includes a first metal layer 1, a first substrate integrated waveguide 2, a second metal layer 3, a second substrate integrated waveguide 4, and a metal floor 5, which are sequentially disposed from top to bottom, that is, the first metal layer 1 is located above the first substrate integrated waveguide 2, the second metal layer 3 is located between the first substrate integrated waveguide 2 and the second substrate integrated waveguide 4, the metal floor 5 is located below the second substrate integrated waveguide 4, and the first metal layer 1, the first substrate integrated waveguide 2, the second metal layer 3, the second substrate integrated waveguide 4, and the metal floor 5 are all rectangular in shape.
Further, the first substrate integrated waveguide 2 includes a first dielectric substrate 6, the second substrate integrated waveguide 4 includes a second dielectric substrate 7, four rows of first metalized through holes 8 are loaded at the peripheral edges of the first dielectric substrate 6 and the second dielectric substrate 7, the first metalized through holes 8 are used for simulating a cavity structure, differential feed through holes are symmetrically arranged at the left side and the right side of the center of the second dielectric substrate 7, the differential feed through holes at the left side and the right side of the center of the second dielectric substrate 7 are respectively a first differential feed through hole 9 and a second differential feed through hole 10, and the first differential feed through hole 9 and the second differential feed through hole 10 form a pair of differential feed through holes.
In order to excite the required mode, simulating a folded substrate integrated waveguide, the first dielectric substrate 6 is also loaded with two rows of symmetrical second metallized through holes 11 in the space surrounded by the four rows of first metallized through holes 8.
In order to prevent electromagnetic leakage of the substrate integrated waveguide, in each row of first metalized through holes 8, the diameter of each first metalized through hole 8 is 2mm, and the distance between every two adjacent first metalized through holes 8 is 4 mm; similarly, in each row of second metalized through holes 11, the diameter of each second metalized through hole 11 is 2mm, and the distance between two adjacent second metalized through holes 11 is 4 mm.
To move the lower order mode TE210Mode and higher order mode TE410And after the modes are combined, third metalized through holes 12 distributed in an arc shape are symmetrically loaded on the left side and the right side of the second medium substrate 7 in a space surrounded by the four rows of first metalized through holes 8, the diameter of each third metalized through hole 12 is 2mm, and the interval is optimized.
Specifically, the number of the third metalized through holes 12 is eight, four of the third metalized through holes 12 are disposed on the left side of the space surrounded by the four rows of the first metalized through holes 8 of the second dielectric substrate 7, another four of the third metalized through holes 12 are disposed on the right side of the space surrounded by the four rows of the first metalized through holes 8 of the second dielectric substrate 7, and the four third metalized through holes 12 on the left side and the four third metalized through holes 12 on the right side constitute four pairs of the third metalized through holes 12.
In this embodiment, the first dielectric substrate and the second dielectric substrate are made of the same material, and have a thickness of 2mm, a dielectric constant of 2.2, and a dielectric loss angle of 0.001.
The first metal layer 1 and the second metal layer 3, and the second metal layer 3 and the metal floor 5 are connected through the first metalized through holes 8, so that four rows of first through holes 13 corresponding to the four rows of first metalized through holes 8 on the first dielectric substrate 6 and the second dielectric substrate 7 are arranged at the peripheral edges of the first metal layer 1, the second metal layer 3 and the metal floor 5; the first metal layer and the second metal layer are provided with two rows of second through holes 14 at corresponding positions of the two rows of second metallized through holes 11; the second metal layer 3 and the metal floor 5 are in the second placeThird through holes 15 are arranged at the corresponding positions of the three metallized through holes 12, and fourth through holes 16 are respectively arranged at the corresponding positions of the first differential feed through hole 9 and the second differential feed through hole 10 on the second metal layer 3; specifically, the length a of a circle center connecting line of the upper and lower rows of first through holes 7 of the first metal layer 1 is 51mm, the length b of a circle center connecting line of the left and right rows of first through holes 7 is 50.6mm, in each row of first through holes 7, the distance p between two adjacent first through holes 7 is 4mm, the diameter d of each first through hole 7 is 2mm, in four second through holes 8 closer to the center of the first metal layer 1, the distance y between the centers of the two second through holes 8 on the left and the two second through holes 8 on the right12mm, and the perpendicular distance x between the center of the circle and the center line of the first metal layer 1 in the width direction518.6mm, the distance y between the centers of the two second through holes 8 on the left and the two second through holes 8 on the right among the four second through holes 8 farther from the center of the first metal layer 126.9mm, and the perpendicular distance x between the center of the circle and the center line of the first metal layer 1 in the width direction6＝20mm。
Further, the first metal layer 1 is symmetrically provided with radiation gaps near the left and right edges, the radiation gaps near the left and right edges are a first radiation gap 17 and a second radiation gap 18, the first radiation gap 17 and the second radiation gap 18 form a pair of radiation gaps, the first radiation gap 17 is located between the left row of first through holes 13 and the left row of second through holes 14, and the vertical distance between the center line of the first radiation gap 17 in the length direction and the circle center of the left row of second through holes 14 is x2The second radiation slot 18 is located between the first through hole 13 in the right row and the second through hole 14 in the right row, and similarly, the vertical distance between the center line of the second radiation slot 18 in the length direction and the center of the second through hole 14 in the right row is x2The first radiation slot 17 and the second radiation slot 18 are each rectangular slots with a length L of 6.9mm140mm, width W12.8mm, the perpendicular distance x between the longitudinal center line of the first radiation slit 17 and the second radiation slit 18 and the width center line of the first metal layer 11＝18.3mm。
Further, a second metalThe layer 4 is symmetrically provided with coupling gaps near the left and right edges, and the left and right sides of the center of the second metal layer 4 are symmetrically provided with matching gaps, the coupling gaps near the left and right edges are respectively a first coupling gap 19 and a second coupling gap 20, the left side of the center of the second metal layer 4 is provided with two matching gaps, respectively a first matching gap 21 and a second matching gap 22, the first matching gap 21 and the second matching gap 22 are respectively located at the left and right sides of the first differential feed through hole 9, and the length of the second matching gap 22 is greater than that of the first matching gap 21, the right side of the center of the second metal layer 4 is provided with two matching gaps, respectively a third matching gap 23 and a fourth matching gap 24, the third matching gap 23 and the fourth matching gap 24 are respectively located at the left and right sides of the second differential feed through hole 10, and the length of the fourth matching gap 24 is greater than that of the third matching gap 23, the first matching gap 21 and the fourth matching gap 24 form a pair of matching gaps, the second matching gap 22 and the third matching gap 23 form another pair of matching gaps, antenna matching is greatly optimized, and each pair of matching gaps can independently adjust a high-order mode, so that the structural performance is simple and controllable; specifically, the first coupling gap 19, the second coupling gap 20, the first matching gap 21, the second matching gap 22, the third matching gap 23 and the fourth matching gap 24 are all rectangular gaps, and the lengths L of the first coupling gap 19 and the second coupling gap 20 are all rectangular gaps449.4mm, width W4Length L of the first matching gap 21 and the fourth matching gap 24 being 2mm37.6mm, width W3Length L of the second matching gap 22 and the third matching gap 23 of 1.3mm227.6mm, width W2A perpendicular distance x between the longitudinal center line of the first coupling slit 19 and the second coupling slit 20 and the width center line of the second metal layer 4 is 1mm723.3mm, the perpendicular distance x between the center line of the first matching slit 21 and the center line of the fourth matching slit 24 in the longitudinal direction and the center line of the second metal layer 4 in the width direction410mm, the perpendicular distance x between the longitudinal center line of the second matching slit 22 and the third matching slit 23 and the width center line of the second metal layer 43＝6mm。
In this embodiment, the first coupling gap 19 is located at the position adjacent to the first through hole 7 at the left edge, the second coupling gap 20 is located at the position adjacent to the first through hole 7 at the right edge, the third metalized through hole 12 at the left side is located between the first coupling gap 19 and the first matching gap 21, and the third metalized through hole 12 at the right side is located between the second coupling gap 20 and the fourth matching gap 24.
Further, the metal floor 5 is provided with a first circular gap 25 at a corresponding position of the first differential feed through hole 9, a second circular gap 26 at a corresponding position of the first differential feed through hole 10, centers of the first circular gap 25 and the first differential feed through hole 9 are the same point, the centers of the second circular gap 26 and the first differential feed through hole 10 are the same point, a diameter of the first circular gap 25 is larger than a diameter of the first differential feed through hole 9, a diameter of the second circular gap 26 is larger than a diameter of the first differential feed through hole 10, a diameter R of the first circular gap 25 and a diameter R of the second circular gap 26 in this embodiment are 4.24mm, and a distance x between the centers of the first circular gap 25 and the second circular gap 26 is equal to the distance x8＝11.6mm。
As can be seen from fig. 1 to 3, the second matching slot 22, the first differential feed through hole 9, the first matching slot 21, and the first coupling slot 19 are arranged in this order from the center of the antenna to the left, and the third matching slot 23, the second differential feed through hole 10, the fourth matching slot 24, and the second coupling slot 20 are arranged in this order from the center of the antenna to the right.
In the above embodiments, the metal material used for the first metal layer 1, the second metal layer 3, the metal floor 5, the first metalized through hole 8, the second metalized through hole 11, and the third metalized through hole 12 may be any one of aluminum, iron, tin, copper, silver, gold, and platinum, or may be an alloy of any one of aluminum, iron, tin, copper, silver, gold, and platinum, and in this embodiment, a copper material is preferably used; the wireless communication device can be an electronic device such as a mobile phone and a tablet computer.
From | S in FIG. 511The I simulation curve shows that the multimode broadband filtering antenna has three resonance points to form a broadband effect, the bandwidth is 15.4%, and the filtering performance of the antenna can be seen from the gain curve of FIG. 6The gain control method has the advantages that the performance is good, the right side is provided with a gain zero point, the in-band gain is gentle, and the in-band gain is about 8.6 dBi; fig. 7 to 9 are directional diagrams of three modes at central frequency points of 4.8GHz, 5.2GHz and 5.5GHz, respectively, and include main polarization, cross polarization, E-plane and H-plane, the side lobe is smaller, the front-to-back ratio is greater than 15dB, and the cross polarization ratio is all above 40 dB.
To sum up, the antenna of the utility model adopts the double-layer substrate integrated waveguide superposition, excites a plurality of modes through the differential feed, and combines the modes through the arc differential feed through hole to form the broadband effect; the antenna is coupled to the upper radiation slot through the coupling slot to radiate, the array distance of the radiation units can be reduced, a directional diagram is improved, the filter effect is increased due to the introduction of the coupling path, and the multimode broadband filter antenna with good performance is formed.
The above, only be the embodiment of the utility model discloses a patent preferred, nevertheless the utility model discloses a protection scope is not limited to this, and any technical personnel who is familiar with this technical field are in the utility model discloses a within range, according to the utility model discloses a technical scheme and utility model design equivalence substitution or change all belong to the protection scope of the utility model patent.
Claims (10)
1. A multimode, broadband filtering antenna, characterized by: the metal floor comprises a first metal layer, a first substrate integrated waveguide, a second metal layer, a second substrate integrated waveguide and a metal floor, wherein the first metal layer, the first substrate integrated waveguide, the second metal layer, the second substrate integrated waveguide and the metal floor are sequentially arranged from top to bottom, radiation gaps are symmetrically arranged on the first metal layer close to the edges of two sides, coupling gaps are symmetrically arranged on the second metal layer close to the edges of two sides, four matching gaps are arranged on the second metal layer, differential feed through holes are symmetrically arranged on two sides of the center of the second substrate integrated waveguide, and circular gaps are arranged on the metal floor at positions corresponding to the differential feed through holes; two of the matching gaps are arranged on the first side of the center of the second metal layer, and the other two matching gaps are arranged on the second side of the center of the second metal layer to form two pairs of matching gaps.
2. The multimode, broadband filtered antenna of claim 1, wherein: the first substrate-integrated waveguide comprises a first dielectric substrate and the second substrate-integrated waveguide comprises a second dielectric substrate;
four rows of first metalized through holes are formed in the peripheral edges of the first medium substrate and the second medium substrate, two rows of symmetrical second metalized through holes are further formed in the space defined by the four rows of first metalized through holes of the first medium substrate, and third metalized through holes distributed in an arc shape are further symmetrically formed in two sides of the space defined by the four rows of first metalized through holes of the second medium substrate;
four rows of first through holes corresponding to the four rows of first metalized through holes on the first medium substrate and the second medium substrate are arranged at the peripheral edges of the first metal layer, the second metal layer and the metal floor; the first metal layer and the second metal layer are provided with two rows of second through holes at the corresponding positions of the two rows of second metallized through holes; third through holes are formed in the second metal layer and the metal floor at positions corresponding to the third metalized through holes; and the second metal layer is provided with a fourth through hole at the corresponding position of the differential feed through hole.
3. The multimode, broadband filtered antenna of claim 2, wherein: the number of the third metalized through holes is eight;
the four third metalized through holes are arranged on the first side in the space surrounded by the four rows of the first metalized through holes of the second medium substrate and are positioned between the coupling gap at the edge of the first side of the second metal layer and the matching gap at the first side of the center of the second metal layer;
and the other four third metalized through holes are arranged on the second side in the space surrounded by the four rows of the first metalized through holes of the second medium substrate and are positioned between the coupling gap at the edge of the second side close to the second metal layer and the matching gap at the second side at the center of the second metal layer.
4. The multimode, broadband filtered antenna of claim 2, wherein: in each row of first metalized through holes, the diameter of each first metalized through hole is 1 mm-3 mm, and the distance between every two adjacent first metalized through holes is 3 mm-5 mm;
in each row of second metalized through holes, the diameter of each second metalized through hole is 1 mm-3 mm, and the distance between every two adjacent second metalized through holes is 3 mm-5 mm.
5. The multimode, broadband filtered antenna of claim 2, wherein: the coupling gap of the second metal layer close to the first side edge is positioned at the position adjacent to the first through hole at the first side edge of the second metal layer;
the coupling gap of the second metal layer close to the second side edge is located at the position adjacent to the row of the first through holes at the second side edge of the second metal layer.
6. The multimode, broadband filtered antenna of claim 2, wherein: the radiation gap of the first metal layer, which is close to the first side edge, is positioned between the first through hole at the first side edge of the first metal layer and the row of second through holes;
the radiation gap of the first metal layer close to the second side edge is positioned between the row of first through holes and the other row of second through holes at the second side edge of the first metal layer.
7. Multimode broadband filtering antenna according to any one of claims 1 to 6, characterized in that: the two matching gaps on the first side of the center of the second metal layer are respectively a first matching gap and a second matching gap, the first matching gap and the second matching gap are respectively positioned on two sides of the differential feed through hole on the first side of the center of the second substrate integrated waveguide, and the length of the second matching gap is greater than that of the first matching gap;
the two matching gaps on the second side of the center of the second metal layer are respectively a third matching gap and a fourth matching gap, the third matching gap and the fourth matching gap are respectively positioned on two sides of the differential feed through hole on the second side of the center of the second substrate integrated waveguide, and the length of the third matching gap is greater than that of the fourth matching gap;
the first matching gap and the fourth matching gap are the same in length and width, and the second matching gap and the third matching gap are the same in length and width.
8. Multimode broadband filtering antenna according to any one of claims 1 to 6, characterized in that: the circle centers of the circular slot and the corresponding differential feed through hole are the same point, and the diameter of the circular slot is larger than that of the corresponding differential feed through hole.
9. The multimode, broadband filtered antenna of claim 8, wherein: the diameter of the differential feed through hole is 1 mm-2 mm, and the diameter of the circular gap is 4 mm-5 mm.
10. A wireless communication device, characterized by: comprising a multimode broadband filtering antenna according to any one of claims 1 to 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821046A (en) * | 2021-01-04 | 2021-05-18 | 北京小米移动软件有限公司 | Antenna structure and terminal equipment |
| CN113871902A (en) * | 2021-09-24 | 2021-12-31 | 西安电子科技大学 | MIMO multi-cavity butterfly filter antenna based on SIW structure |
| CN114122696A (en) * | 2021-10-30 | 2022-03-01 | 南京理工大学 | 5G millimeter wave filtering antenna based on SIW |
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2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821046A (en) * | 2021-01-04 | 2021-05-18 | 北京小米移动软件有限公司 | Antenna structure and terminal equipment |
| CN113871902A (en) * | 2021-09-24 | 2021-12-31 | 西安电子科技大学 | MIMO multi-cavity butterfly filter antenna based on SIW structure |
| CN113871902B (en) * | 2021-09-24 | 2022-10-25 | 西安电子科技大学 | MIMO multi-cavity butterfly filter antenna based on SIW structure |
| CN114122696A (en) * | 2021-10-30 | 2022-03-01 | 南京理工大学 | 5G millimeter wave filtering antenna based on SIW |
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