CN114899594B - Broadband filtering patch antenna based on double-ring gap structure coupling feed - Google Patents
Broadband filtering patch antenna based on double-ring gap structure coupling feed Download PDFInfo
- Publication number
- CN114899594B CN114899594B CN202210742391.9A CN202210742391A CN114899594B CN 114899594 B CN114899594 B CN 114899594B CN 202210742391 A CN202210742391 A CN 202210742391A CN 114899594 B CN114899594 B CN 114899594B
- Authority
- CN
- China
- Prior art keywords
- layer
- dielectric substrate
- antenna
- patch
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses a broadband filtering patch antenna based on double-ring slot structure coupling feed, which comprises four layers of dielectric substrates from bottom to top, wherein the first layer of dielectric substrate is made of all-metal aluminum; the upper surface of the second layer of dielectric substrate is printed with a first square metal patch with a double-ring slot structure, and the lower surface of the second layer of dielectric substrate is printed with an L-shaped feed microstrip line to jointly form an antenna feed structure; printing a second square metal patch on the upper surface of the third layer of dielectric substrate; and a third square metal patch is printed on the upper surface of the fourth layer of dielectric substrate. The first layer of all-metal aluminum dielectric substrate is used as a metal ground of the antenna, the second layer of structure is a feed network of the antenna, the third layer of structure is a main radiation part of the antenna, and the fourth layer of structure is a parasitic radiation part of the antenna. By using the double-ring slot structure, two radiation zeros are generated, and the band-pass filtering radiation function is integrated into the antenna.
Description
Technical Field
The invention relates to the technical field of radio frequency communication, in particular to a broadband filtering patch antenna based on double-ring slot structure coupling feed.
Background
In the rf front-end circuit, in order to suppress clutter interference in other frequency bands, a filter is usually cascaded in a front stage of the antenna, and the filter not only occupies an extra circuit size, but also introduces a certain insertion loss, thereby reducing radiation efficiency of the antenna. In recent years, a filter antenna has a filter performance as its name suggests, and its small size and low loss have become a research focus in academia and industry. The traditional filter antenna design methods are roughly classified into two types, namely, the last stage of resonator of the filter circuit is replaced by an antenna radiation unit such as a dipole antenna, a monopole antenna, a patch antenna and the like; and secondly, by implanting parasitic filter devices such as a half-wavelength resonator, a patch and the like into a radiating body and a feed structure of the traditional antenna, the filtering effect of out-of-band radiation suppression is realized by introducing a non-radiation resonant mode out-of-band of the antenna. The first method achieves the object of miniaturization of the device without a cable connecting the filter and the antenna, but the filter resonance circuit still has unavoidable insertion loss; the second approach achieves both miniaturization and reduced losses, but the parasitic filter devices add complexity to the filter antenna design.
Based on the filter antenna, the filter antenna which does not have any filter structure and simultaneously achieves miniaturization, low loss and simple structure has potential application value in systems such as a base station, a terminal and a satellite.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a broadband filtering patch antenna based on double-ring slot structure coupling feed, the antenna can realize high roll-off band-pass filtering radiation performance, has three radiation zeros with controllable frequency, does not need to introduce an additional filtering circuit, and realizes unconventional band-pass filtering radiation performance through a conventional antenna structure.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a broadband filtering patch antenna based on double-ring gap structure coupling feed, from down up including first layer dielectric substrate, second floor dielectric substrate, third layer dielectric substrate and fourth layer dielectric substrate, first layer dielectric substrate is the metal ground structure of antenna, surface printing gap coupling feed structure about the second floor dielectric substrate, the main radiation patch structure of surface printing antenna on the third layer dielectric substrate, the parasitic radiation patch structure of surface printing antenna on the fourth layer dielectric substrate.
The first layer of dielectric substrate is of an all-metal aluminum plate structure, the upper surface of the second layer of dielectric substrate is printed with a first square metal patch with a double-ring gap structure, and the lower surface of the second layer of dielectric substrate is printed with an L-shaped feed microstrip line; printing a second square metal patch on the upper surface of the third layer of dielectric substrate; a third square metal patch is printed on the upper surface of the fourth layer of dielectric substrate;
first layer dielectric substrate is provided with a plurality of through-holes, evenly install a plurality of nylon columns on the through-hole, first layer dielectric substrate, second floor dielectric substrate, third layer dielectric substrate and fourth layer dielectric substrate all set up a plurality of through-holes, evenly install a plurality of nylon columns on the through-hole, four layers dielectric substrate passes through nylon nut fixed mounting on a plurality of nylon columns.
As a preferred embodiment of the present invention, a first square metal patch is printed on the upper surface of the second layer dielectric substrate, a first slot-and-slot line and a second slot-and-slot line are etched on the first square metal patch, and the first slot-and-slot line and the second slot-and-slot line are disposed right above the L-shaped feed microstrip line on the lower surface.
As a preferred embodiment of the present invention, the first slot line and the second slot line are both square annular slot lines, the first slot line is located inside the second slot line, and the L-shaped feed microstrip line is connected to an external cable line test element to serve as a 50 Ω input port of the antenna.
As a preferred embodiment of the present invention, the first slot line and the second slot line are both square annular slot lines, the first slot line, the second slot line, the L-shaped feed microstrip line, and the cable line test element jointly form a feed structure of the antenna, and the feed structure is a dual-function structure, so as to implement a broadband impedance matching, i.e., a feed function, of the antenna and generate two radiation zeros at upper and lower side bands of an antenna operating frequency band.
As a preferred embodiment of the present invention, the dual-ring slot line on the upper surface of the second dielectric substrate of the present invention enables the upper and lower frequency sidebands of the antenna in the operating frequency band to respectively generate a radiation zero with very low gain, and the size and position of the dual-ring slot structure are controlled to independently control the frequencies of the two radiation zeros, thereby realizing the radiation performance of band-pass filtering.
As a preferred embodiment of the present invention, the L-shaped feeding microstrip line printed on the lower surface of the second dielectric substrate is used to couple an input signal of an antenna to the first slot line and the second slot line through the L-shaped feeding microstrip line, and to couple the main radiation patch of the third dielectric substrate above and the parasitic radiation patch of the fourth dielectric substrate above.
As a preferred embodiment of the present invention, the parasitic radiation patch on the upper surface of the fourth dielectric substrate is used to increase the radiation gain of the antenna and generate a frequency-controllable radiation zero outside the high frequency band.
As a preferred embodiment of the present invention, a second square metal patch is printed on the upper surface of the third dielectric substrate, the second square metal patch is a main radiation structure of the antenna, and a carrier signal is transmitted from the input port to the wireless space by a half-wavelength resonant antenna principle.
As a preferred embodiment of the present invention, the number of the through holes in each of the first dielectric substrate, the second dielectric substrate, the third dielectric substrate, and the fourth dielectric substrate is 4, the number of the corresponding nylon columns is 12, and the nylon columns are installed on the corresponding through holes.
Compared with the prior art, the invention has the following advantages and effects:
1. the invention discloses a double-ring gap coupling feed technology for the first time, and the structure has two functions: the broadband impedance matching of the antenna is realized, and the response of band-pass filtering radiation is integrated on the antenna.
2. The invention relates to a broadband filtering patch antenna based on double-ring slot structure coupling feed, which has three controllable radiation zeros: two radiation zeros at the edge of the working band of the antenna can be introduced by changing the perimeter of the two slot line structures, and one radiation zero outside the high frequency band can be introduced by changing the parasitic radiation patch positioned on the fourth layer.
3. The invention has simple structure, realizes the filtering effect of high roll-off without introducing an additional filtering circuit, does not introduce additional loss, and ensures that the radiation performance of the antenna in a working frequency band is not influenced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of a first dielectric slab of the present invention;
FIG. 3 is a schematic top perspective view of a second dielectric sheet according to the present invention;
FIG. 4 is a schematic top view of a third dielectric slab in accordance with the present invention;
FIG. 5 is a schematic top view of a fourth dielectric slab according to the present invention;
FIG. 6 is a graph of the simulated and tested antenna reflection coefficient S11 versus frequency results of the present invention;
FIG. 7 is a graph of antenna gain versus frequency results for simulations and tests of the present invention;
FIG. 8 is a graph of antenna efficiency versus frequency results for simulation and testing of the present invention;
FIG. 9 is the invention in the YOZ plane, i.e., E plane pattern;
fig. 10 is the pattern in the XOZ plane, i.e., the H plane pattern, of the present invention.
In the figure: wherein: 1. a first dielectric substrate; 2. a second layer of dielectric substrate; 3. a third dielectric substrate; 4. a fourth dielectric substrate; 5. a first slot line; 6. a second slot line; 7. a first square metal patch; 8. an L-shaped feed microstrip line; 9. a cable test element; 10. a second square metal patch; 11. a third square metal patch; 12. a nylon column; 13. a nylon nut; 14. and a through hole.
Detailed Description
The present invention is further illustrated by the following examples, which are illustrative of the present invention and are not to be construed as being limited thereto.
A broadband filtering patch antenna based on double-ring slot structure coupling feed comprises a first layer of dielectric substrate 1, a second layer of dielectric substrate 2, a third layer of dielectric substrate 3 and a fourth layer of dielectric substrate 4 from bottom to top as shown in figure 1, wherein the first layer of dielectric substrate 1 is a metal ground structure of the antenna, the upper surface and the lower surface of the second layer of dielectric substrate 2 are printed with slot coupling feed structures, the upper surface of the third layer of dielectric substrate 3 is printed with a main radiation patch structure of the antenna, and the upper surface of the fourth layer of dielectric substrate 4 is printed with a parasitic radiation patch structure of the antenna;
the first layer of dielectric substrate 1 is of an all-metal aluminum plate structure, the upper surface of the second layer of dielectric substrate 2 is printed with a first square metal patch 7 with a double-ring gap structure, and the lower surface of the second layer of dielectric substrate is printed with an L-shaped feed microstrip line 8; a second square metal patch 10 is printed on the upper surface of the third layer of dielectric substrate 3; a third square metal patch 11 is printed on the upper surface of the fourth layer of dielectric substrate 4;
first layer dielectric substrate 1 is provided with a plurality of through-holes 14, evenly install a plurality of nylon columns 12 on the through-hole 14, first layer dielectric substrate 1, second floor dielectric substrate 2, third layer dielectric substrate 3 and fourth layer dielectric substrate 4 all set up a plurality of through-holes 14, evenly install a plurality of nylon columns 12 on the through-hole 14, four layers of dielectric substrates pass through nylon nut 13 fixed mounting on a plurality of nylon columns 12.
As shown in fig. 1-2, a first layer of dielectric substrate 1 is made of all-metal aluminum, the first layer of all-metal aluminum dielectric substrate is used as a metal ground of an antenna, a second layer of structure is a feed network of the antenna, a third layer of structure is a main radiation part of the antenna, and a fourth layer of structure is a parasitic radiation part of the antenna; the first layer of dielectric substrate 1 is provided with four through holes 14 for installing nylon columns 12, and the first layer of dielectric substrate 1 mainly functions to reflect electromagnetic waves leaking to the lower part from the first slot line 5 and the second slot line 6 to the main radiation direction of the antenna, namely the right upper part, so that the front-to-back ratio index of the antenna is improved; by using a double-loop slot coupling feed structure, two radiation zeros are generated, and a band-pass filtering radiation function is integrated into the antenna, and compared with other filtering antennas, the structure has two functions: the broadband impedance matching of the antenna is realized, and the response of band-pass filtering radiation is integrated on the antenna; two radiation zero points at the edge of the working frequency band of the antenna can be introduced by changing the perimeter of the two slit slot line structures, and one radiation zero point outside a high frequency band can be introduced by changing the parasitic radiation patch positioned on the fourth layer; the invention has simple structure, realizes the filtering effect of high roll-off without introducing an additional filtering circuit, does not introduce additional loss, ensures that the radiation performance of the antenna in a working frequency band is not influenced, and does not need any filter circuit.
In an alternative embodiment, as shown in fig. 3, a first square metal patch 7 is printed on the upper surface of the second layer dielectric substrate 2, a first slot line 5 and a second slot line 6 are etched on the first square metal patch 7, the first slot line 5 and the second slot line 6 are disposed right above an L-shaped feed microstrip line 8 on the lower surface, the first slot line 5 and the second slot line 6 are both square annular slot lines, the first slot line 5 is located inside the second slot line 6, the L-shaped feed microstrip line 8 is connected to an external cable test element 9 to serve as a 50 Ω input port of an antenna, an input signal is transmitted to the L-shaped feed microstrip metal line 8 through the test element 9, and then the signal is coupled to the second square metal patch 10 and the third square metal patch 11 above through a double-ring slot structure, so as to radiate a carrier signal into a wireless space.
An optional implementation manner, as shown in fig. 3, in the present invention, the first slot line 5 and the second slot line 6 are both square annular slot lines, the first slot line 5, the second slot line 6, the L-shaped feed microstrip line 8, and the cable line test element 9 jointly form a feed structure of the antenna, and the feed structure is a dual-function structure, so that broadband impedance matching, i.e., a feed function, of the antenna is achieved, and two radiation zeros are generated at upper and lower side bands of an antenna operating frequency band.
As shown in fig. 3, the first slot line 5, the second slot line 6, the L-shaped feed microstrip line 8 and the cable line test element 9 jointly form a feed structure of the antenna, an input signal transmits to the L-shaped feed microstrip line 8 through the test element 9, and then the input signal is coupled to the second square metal patch 10 and the third square metal patch 11 above through the double-ring slot structure, so as to radiate a carrier signal into a wireless space; the feed structure is a dual-function structure, the first function is to realize broadband impedance matching of the antenna, namely the feed function, and the second function is to generate two radiation zeros with very low gains at the upper and lower side bands of the working frequency band of the antenna by the structure, so that the response of band-pass filtering radiation is realized.
In an alternative embodiment, according to the present invention, an L-shaped feeding microstrip line 8 is printed on the lower surface of the second dielectric substrate 2, and is used for coupling an input signal of an antenna to the first slot line 5 and the second slot line 6 through the L-shaped feeding microstrip line 8, so as to further couple to the main radiating patch of the upper third dielectric substrate 3 and the parasitic radiating patch of the fourth dielectric substrate 4.
In an alternative embodiment, as shown in fig. 5, the parasitic radiation patch on the upper surface of the fourth dielectric substrate 4 increases the radiation gain of the antenna and generates a radiation zero with controllable frequency outside the high frequency band.
The upper surface of the fourth-layer dielectric substrate 4 is printed with a third square metal patch 11, the metal patch is a parasitic radiation structure of the antenna, on one hand, the metal patch plays a role of a director to increase the radiation gain of the antenna, and on the other hand, the metal patch can generate an out-of-band radiation zero point outside a high-frequency band, so that the out-of-band rejection level of the antenna is ensured; similarly, the dielectric substrate has four through holes 14 for mounting the nylon posts 12.
In an alternative embodiment, as shown in fig. 4, a second square metal patch 10 is printed on the upper surface of the third layer dielectric substrate 3, the second square metal patch 10 is a main radiation structure of an antenna, a carrier signal is transmitted from an input port to a wireless space by a half-wavelength resonant antenna principle, and the dielectric substrate also has four through holes 14 for mounting nylon pillars 12.
In an optional implementation manner, the number of the through holes 14 in each of the first dielectric substrate layer 1, the second dielectric substrate layer 2, the third dielectric substrate layer 3, and the fourth dielectric substrate layer 4 is 4, the number of the nylon columns 12 is 12, and the nylon columns 12 are installed on the corresponding through holes 14.
12 nylon columns 12 are uniformly arranged on the 4 through holes 14, and the four-layer dielectric substrate is fixedly arranged on the 12 nylon columns 12 through nylon nuts 13.
An optional implementation manner is shown in fig. 6, which shows a simulation and test result graph of the reflection coefficient S11 — frequency of the filter antenna according to an embodiment of the present invention, where the test and simulation results are better matched, the impedance matching in the pass band is good, the impedance bandwidth is 1.4 to 2.1GHz, the relative bandwidth is 40%, and the return loss is all below-10 dB.
An optional implementation manner is shown in fig. 7, which shows a gain-frequency simulation and test result diagram of the filter antenna according to an embodiment of the present invention, and the test and simulation results are well matched, where the gain in the operating frequency band is about 8.7dBi, three radiation zeros are generated at frequencies 1.32GHz, 2.2GHz, and 2.6GHz, and are respectively denoted as a radiation zero 1, a radiation zero 2, and a radiation zero 3, so that the radiation suppression level in the low-frequency out-of-band frequency band from 0.8 to 1.32GHz is better than 15dB, and the radiation suppression level in the high-frequency out-of-band frequency band from 2.2 to 2.8GHz is higher than 18dB. The radiation zeros 1 and 2 are generated by a double-ring slot structure on the upper surface of the second layer dielectric substrate 2 of the antenna, so that the antenna gain has high frequency selectivity, such as high roll-off of band edge gain; the radiation zero point 2 is generated by printing a third square metal patch 11 on the upper surface of the fourth-layer dielectric substrate 4, so that the antenna is guaranteed to have a high out-of-band radiation suppression level outside a high-frequency band.
An alternative embodiment, as shown in fig. 8, is a graph of efficiency-frequency simulation and test results of the filtering antenna according to an embodiment of the present invention, where gains of the antenna in an operating frequency band are all greater than 87%, and radiation efficiency outside the operating frequency band is lower than 5%.
An alternative embodiment, shown in fig. 9 and 10, provides the directional patterns of the filtering antenna on the plane E of the YOZ plane and the plane H of the XOZ plane according to an embodiment of the present invention, and the data shows that the antenna of the present invention has good directional radiation characteristics and the cross polarization level is less than-15 dB.
The filtering antenna has a simple structure, realizes a high roll-off filtering effect without introducing any additional filtering circuit, and does not introduce additional loss; the innovative feed mode adopting the double-ring gap coupling structure can realize impedance matching of a wider frequency band and can generate band-pass filtering radiation response.
The embodiment provided by the invention can adjust the size of a related structure according to requirements to adapt to receiving and transmitting equipment of wireless communication systems with different frequency bands, and because the antenna can realize the filtering characteristic without a filter, the antenna is particularly suitable for being applied to a multi-band and multi-system coexisting communication environment, such as a new generation compatible 5G/4G/3G multi-system multi-band common-aperture antenna array; in the application scene, the antennas with multiple frequency bands are arranged in the antenna housing with limited size and are strongly coupled with each other, the problems of high cost, multiple devices, compact space, large loss and the like can be caused by the decoupling realized by the traditional method of connecting the filter circuits in series, and the filter antenna designed by the invention can solve the problems and provides an effective decoupling technical means for a multi-frequency-band communication system.
The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a broadband filtering patch antenna based on couple feed of dicyclo slot structure which characterized in that: the antenna comprises a first layer of dielectric substrate (1), a second layer of dielectric substrate (2), a third layer of dielectric substrate (3) and a fourth layer of dielectric substrate (4) from bottom to top, wherein the first layer of dielectric substrate (1) is a metal ground structure of the antenna, the upper surface and the lower surface of the second layer of dielectric substrate (2) are printed with a gap coupling feed structure, the upper surface of the third layer of dielectric substrate (3) is printed with a main radiation patch structure of the antenna, and the upper surface of the fourth layer of dielectric substrate (4) is printed with a parasitic radiation patch structure of the antenna;
the first layer of dielectric substrate (1) is of an all-metal aluminum plate structure, a first square metal patch (7) with a double-ring gap structure is printed on the upper surface of the second layer of dielectric substrate (2), and an L-shaped feed microstrip line (8) is printed on the lower surface of the second layer of dielectric substrate; a second square metal patch (10) is printed on the upper surface of the third layer of dielectric substrate (3); a third square metal patch (11) is printed on the upper surface of the fourth layer of dielectric substrate (4);
the first layer of dielectric substrate (1) is provided with a plurality of through holes (14), a plurality of nylon columns (12) are uniformly arranged on the through holes (14), the first layer of dielectric substrate (1), the second layer of dielectric substrate (2), the third layer of dielectric substrate (3) and the fourth layer of dielectric substrate (4) are provided with a plurality of through holes (14), a plurality of nylon columns (12) are uniformly arranged on the through holes (14), and the fourth layer of dielectric substrate is fixedly arranged on the plurality of nylon columns (12) through nylon nuts (13);
a first slot line (5) and a second slot line (6) are etched on the first square metal patch (7), and the first slot line (5) and the second slot line (6) are arranged right above the L-shaped feed microstrip line (8) on the lower surface;
the first slit slot line (5) and the second slit slot line (6) are both square annular slit slot lines, and the first slit slot line (5) is arranged on the inner side of the second slit slot line (6).
2. The wideband filter patch antenna based on dual-loop slot structure coupling feed of claim 1, wherein: the L-shaped feed microstrip line (8) is connected with an external cable test element (9) to be used as a 50 omega input port of the antenna.
3. The broadband filtering patch antenna based on double-ring slot structure coupling feed of claim 1, wherein: the antenna comprises a first slot line (5), a second slot line (6), an L-shaped feed microstrip line (8) and a cable line test element (9), wherein the first slot line, the second slot line, the L-shaped feed microstrip line and the cable line test element (9) jointly form a feed structure of the antenna, the feed structure is a dual-function structure and is used for realizing broadband impedance matching, namely a feed function, of the antenna and generating two radiation zeros at the upper and lower side bands of an antenna working frequency band.
4. The wideband filter patch antenna based on dual-loop slot structure coupling feed of claim 1, wherein: the double-ring slot line on the upper surface of the second layer of dielectric substrate (2) enables the antenna to respectively generate a radiation zero point on the upper frequency side band and the lower frequency side band of the working frequency band, and the size and the position of the double-ring slot structure are controlled to independently control the frequency of the two radiation zero points, so that the band-pass filtering radiation performance is realized.
5. The wideband filter patch antenna based on dual-loop slot structure coupling feed of claim 1, wherein: the antenna comprises a second-layer dielectric substrate (2), an L-shaped feed microstrip line (8) printed on the lower surface of the second-layer dielectric substrate, a main radiation patch coupled to a first slot line (5) and a second slot line (6) through the L-shaped feed microstrip line (8), and a parasitic radiation patch coupled to a third-layer dielectric substrate (3) and a fourth-layer dielectric substrate (4).
6. The wideband filter patch antenna based on dual-loop slot structure coupling feed of claim 1, wherein: and the parasitic radiation patch on the upper surface of the fourth layer of dielectric substrate (4) is used for increasing the radiation gain of the antenna and generating a frequency-controllable radiation zero point outside a high-frequency band.
7. The broadband filtering patch antenna based on double-ring slot structure coupling feed of claim 1, wherein: and a second square metal patch (10) is printed on the upper surface of the third layer of dielectric substrate (3), and the second square metal patch (10) is a main radiation structure of the antenna and is used for transmitting a carrier signal from an input port to a wireless space by a half-wavelength resonant antenna principle.
8. The wideband filter patch antenna based on dual-loop slot structure coupling feed of claim 1, wherein: the number of the through holes (14) in each layer of the first layer of dielectric substrate (1), the second layer of dielectric substrate (2), the third layer of dielectric substrate (3) and the fourth layer of dielectric substrate (4) is 4, the number of the corresponding nylon columns (12) is 12, and the nylon columns (12) are installed on the corresponding through holes (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210742391.9A CN114899594B (en) | 2022-06-27 | 2022-06-27 | Broadband filtering patch antenna based on double-ring gap structure coupling feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210742391.9A CN114899594B (en) | 2022-06-27 | 2022-06-27 | Broadband filtering patch antenna based on double-ring gap structure coupling feed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114899594A CN114899594A (en) | 2022-08-12 |
| CN114899594B true CN114899594B (en) | 2023-04-14 |
Family
ID=82729789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210742391.9A Active CN114899594B (en) | 2022-06-27 | 2022-06-27 | Broadband filtering patch antenna based on double-ring gap structure coupling feed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114899594B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441210B (en) * | 2022-08-29 | 2023-07-25 | 西安电子科技大学 | Self-decoupling circularly polarized filter antenna array |
| CN115832694B (en) * | 2023-02-14 | 2023-05-26 | 成都天成电科科技有限公司 | Waveguide-like integrated antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080051435A (en) * | 2006-12-05 | 2008-06-11 | 한국전자통신연구원 | Omni-directional planar antenna |
| CN205621854U (en) * | 2016-04-06 | 2016-10-05 | 华南理工大学 | Double polarization filtering antenna with high selectivity and low cross polarization |
| CN110808458A (en) * | 2019-11-27 | 2020-02-18 | 华南理工大学 | Dual-polarization multilayer patch filtering antenna and communication equipment |
| CN111293413A (en) * | 2020-03-03 | 2020-06-16 | 电子科技大学 | Compact broadband filtering antenna based on cross-coupling structure and MIMO antenna thereof |
| CN111883916A (en) * | 2020-07-16 | 2020-11-03 | 南通大学 | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure |
| CN114566796A (en) * | 2022-03-11 | 2022-05-31 | 厦门大学 | Broadband high-gain circularly polarized filtering antenna |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7429952B2 (en) * | 2005-12-23 | 2008-09-30 | Hemisphere Gps Inc. | Broadband aperture coupled GNSS microstrip patch antenna |
| US8599089B2 (en) * | 2010-03-30 | 2013-12-03 | Apple Inc. | Cavity-backed slot antenna with near-field-coupled parasitic slot |
| EP3742552A1 (en) * | 2019-05-23 | 2020-11-25 | Nokia Solutions and Networks Oy | A multi-band antenna arrangement |
| CN210926343U (en) * | 2019-10-25 | 2020-07-03 | 东莞理工学院 | Electromagnetic coupling broadband patch antenna with filtering characteristic |
| CN111129780B (en) * | 2019-12-28 | 2021-11-23 | 华南理工大学 | Structure for improving oblique incidence characteristic of glass material in 5G millimeter wave frequency band |
| US11777201B2 (en) * | 2020-09-03 | 2023-10-03 | Meta Platforms, Inc. | Apparatus, system, and method for transferring radio frequency signals between waveguides and radiating elements in antennas |
| CN113381192B (en) * | 2021-06-15 | 2022-07-26 | 西安电子科技大学 | Low-profile filtering antenna with broadband external suppression |
-
2022
- 2022-06-27 CN CN202210742391.9A patent/CN114899594B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080051435A (en) * | 2006-12-05 | 2008-06-11 | 한국전자통신연구원 | Omni-directional planar antenna |
| CN205621854U (en) * | 2016-04-06 | 2016-10-05 | 华南理工大学 | Double polarization filtering antenna with high selectivity and low cross polarization |
| CN110808458A (en) * | 2019-11-27 | 2020-02-18 | 华南理工大学 | Dual-polarization multilayer patch filtering antenna and communication equipment |
| CN111293413A (en) * | 2020-03-03 | 2020-06-16 | 电子科技大学 | Compact broadband filtering antenna based on cross-coupling structure and MIMO antenna thereof |
| CN111883916A (en) * | 2020-07-16 | 2020-11-03 | 南通大学 | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure |
| CN114566796A (en) * | 2022-03-11 | 2022-05-31 | 厦门大学 | Broadband high-gain circularly polarized filtering antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114899594A (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11575197B2 (en) | Multi-band antenna having passive radiation-filtering elements therein | |
| CN114899594B (en) | Broadband filtering patch antenna based on double-ring gap structure coupling feed | |
| US7629930B2 (en) | Systems and methods using ground plane filters for device isolation | |
| Kim et al. | 60-GHz CPW-fed post-supported patch antenna using micromachining technology | |
| Chung et al. | Multifunctional microstrip transmission lines integrated with defected ground structure for RF front-end application | |
| CN109672019B (en) | Terminal MIMO antenna device and method for realizing antenna signal transmission | |
| CN108039591B (en) | Double-linear polarization rectifying antenna with harmonic suppression capability | |
| CN114566794B (en) | 5G millimeter wave dual-polarized magneto-electric dipole filter antenna | |
| CN109449585B (en) | Compact high-gain dual-polarization differential filtering antenna | |
| CN114284736B (en) | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna | |
| CN110233342B (en) | Complex impedance matching circular polarization filtering antenna | |
| CN111641040A (en) | Dual-port mobile terminal antenna with self-decoupling characteristic | |
| WO2021212277A1 (en) | Dual-frequency dual-polarization antenna | |
| CN108736153B (en) | Three-frequency low-profile patch antenna | |
| CN101252218B (en) | Realizing multi-attenuation band ultra-wideband aerial based on two stage type step electric impedance resonator | |
| CN117691349A (en) | On-board miniaturized UWB monopole antenna and angle measurement combination | |
| Shiddanagouda et al. | Design and analysis of printed MIMO antenna for next generation Wireless Applications | |
| CN110459862B (en) | Millimeter wave grid array antenna based on slot radiation | |
| CN109994828B (en) | Broadband slot coupling antenna | |
| Yuan et al. | A Compact Dual-Band and High-Isolation MIMO Antenna System for 5G Smartphone Applications | |
| CN201188454Y (en) | Implementation of multi-frequency interference resistance ultra-wideband antenna using double frequency characteristics of ladder impedance resonator | |
| CN110649380A (en) | Millimeter wave broadband filtering antenna | |
| CN215377686U (en) | Antenna assembly and electronic equipment | |
| EP3893328A1 (en) | Multi-band antenna having passive radiation-filtering elements therein | |
| Li et al. | A compact four port MIMO antenna using connected neutral lines for enhanced isolation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |