CN110739542A - kinds of wide-band high-isolation antenna - Google Patents
kinds of wide-band high-isolation antenna Download PDFInfo
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- CN110739542A CN110739542A CN201911008875.5A CN201911008875A CN110739542A CN 110739542 A CN110739542 A CN 110739542A CN 201911008875 A CN201911008875 A CN 201911008875A CN 110739542 A CN110739542 A CN 110739542A
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- 238000002955 isolation Methods 0.000 title claims abstract description 72
- 230000005404 monopole Effects 0.000 claims abstract description 66
- 230000005855 radiation Effects 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
-
- 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
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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
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
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Abstract
The invention discloses broadband high-isolation antennas, which relate to the technical field of coverage antennas and solve the problems of narrow frequency band, poor isolation and large appearance of common multi-port antennas and have the technical scheme key points that the broadband high-isolation antennas comprise a th monopole subassembly and a second monopole subassembly which are arranged adjacently, a th isolation band extending to the position between a th grounding piece and a second grounding piece is arranged between a th radiation piece and the second radiation piece, a side of the th grounding piece, which is far away from a th radiation piece, is provided with a second isolation band extending to the position of the second grounding piece, which is far away from a of the second radiation piece, the isolation between adjacent ports is effectively reduced by the arrangement of the two isolation bands, the broadband high-isolation antennas are applied to a shell with a circular structure, the utilization rate of an internal space is improved, the broadband volume is reduced, and antennas with high isolation, beautiful appearance and compatibility with different standards of 2G/3G/4G/5G and.
Description
Technical Field
The invention relates to the technical field of dual-port antennas, in particular to broadband high-isolation antennas.
Background
With the development of mobile communication, the requirement for data capacity is higher and higher, and the requirement for antenna is to increase the number of antennas or to design antennas with more ports, which is the commonly adopted method. In particular, in the 5G era, the characteristics of high speed, large capacity and low time delay determine that the multi-port antenna is applied more and more. Meanwhile, the antenna is compatible with systems of other frequency bands, the requirement on the bandwidth of the antenna is wider and wider, the size of the whole antenna needs to consider the limitation of the installation environment, and the size cannot be greatly increased or even reduced, so that the requirement on the change of the design and the integrated design of the antenna unit is met.
The two-port antenna is essentially an integrated design of the two antennas, each port corresponds to an -plane independent antenna, interference can be generated between the antennas when the distance between the antennas is too close, the volume of the integrated antenna is large when the distance is too far, and the index of isolation is regulated by the industry to quantitatively express the interference degree.
Disclosure of Invention
The invention aims to provide kinds of broadband high-isolation antennas, which have the advantages that the radiation of signals can be ensured, the signal interference between adjacent ports can be effectively reduced, the antennas can be applied to a shell with a circular structure, and the utilization rate of the internal space of the shell can be ensured.
The technical scheme includes that the broadband high-isolation antenna comprises a monopole subassembly and a second monopole subassembly which are adjacently arranged, the 0 monopole subassembly comprises a 1 radiator and a ground piece, the second monopole subassembly comprises a second radiator and a second ground piece, the ground piece and the second ground piece are arranged side by side, a isolation strip for improving isolation is arranged between the monopole subassembly and the second monopole subassembly, and a side of the ground piece far away from the radiator is provided with a second isolation strip extending to a side of the second ground piece far away from the second radiator .
By adopting the technical scheme, the th monopole assembly and the second monopole assembly can realize omnidirectional radiation of two ports, effectively shorten a longer distance required by avoiding signal interference between adjacent ports so as to effectively improve the space utilization rate inside the shell and further reduce the space occupied by the whole shell, and have the advantage of excellent intermodulation, and different ports can be flexibly applied to different related fields.
A step of the present invention includes providing a circular housing, the th monopolar subassembly, the second monopolar subassembly, the th isolation band, and the second isolation band being disposed within the housing.
According to the invention, steps are carried out, the isolation belt comprises a isolation section and a isolation section extending between a radiation element and a second radiation element, the isolation section and the second isolation section are vertically arranged and then are in a T shape, and the side edge of the second isolation section departing from the isolation section is matched with the inner wall of the shell.
Through adopting above-mentioned technical scheme, because the shape of casing is circular, and two monopole subassemblies are square, in order to save the inside space of casing when the adaptation appearance is the monopole subassembly of rectangle, current casing is also the rectangle generally, but the casing of the rectangle of single can not satisfy the requirement that people are to the design increase gradually, through this technical scheme, when realizing two port signals mutual isolation, still can place two monopole subassemblies simultaneously in the casing that the inner space is less relatively, so that adapt to the design requirement that people increase gradually.
A step of the present invention is to provide that the monopole assembly and the second monopole assembly are circumferentially disposed about a center of the and have acute axial angles.
By adopting the technical scheme, the signal radiation range of the th monopole assembly and the second monopole assembly can be conveniently improved.
According to the invention, is arranged, a reinforcing net for reinforcing each component is arranged in the shell, and the reinforcing net is matched with the inner wall of the shell.
By adopting the technical scheme, the reinforcing mesh can be used for firmly fixing the th monopole subassembly and the second monopole subassembly in the shell so as to improve the capability of the th monopole subassembly and the second monopole subassembly to shift or loosen when being impacted by external force.
According to the invention, steps are carried out, a branch for adjusting impedance and a impedance adjusting section with a rectangular section are arranged on the side edge of the radiation element close to the grounding element, a second branch for adjusting impedance and a second impedance adjusting section with a trapezoidal section are arranged on the side edge of the grounding element close to the radiation element, and the grounding element and the radiation element are both conductors.
According to the step, the impedance adjusting section comprises a th straight line section for impedance adjustment, the second impedance adjusting section comprises a second straight line section which is used for impedance adjustment and is close to the th straight line section, and a distance is reserved between the th straight line section and the second straight line section.
According to the invention, steps are provided, the number of the branch knots is at least two, and the branch knots are respectively arranged at two ends of the impedance adjusting section along the extending direction of the branch knots.
According to the step , the number of the second branches is at least two, and the second branches are respectively arranged at two ends of the second impedance adjusting section along the extending direction of the second impedance adjusting section.
According to the invention, step is implemented that a third branch is arranged on the grounding piece, and the side where the second impedance adjusting section is located is adjacent to the second branch.
By adopting the technical scheme, the connecting wire is a coaxial cable, the inner conductor of the connecting wire is connected with the grounding piece, and the outer conductor of the connecting wire is connected with the radiating piece; the length of the rectangular bottom edge of the lower part of the radiation piece, the length of the trapezoidal upper bottom of the grounding piece and the distance between the two bottom edges can be used for realizing impedance matching, and the conventional microstrip line for designing a monopole antenna can be abandoned; by reducing the application of extra accessories, the scheme can obtain a more simplified structure, and the operation of production and processing of enterprises is simpler, so that the production and processing cost of the enterprises can be reduced conveniently, and the overall appearance can be lighter and thinner; and the radiation of an ultra-wide frequency band can be realized, so that the performances of antenna gain, intermodulation and the like can be improved conveniently.
, the shape of the branch and the position of the branch can be arranged to improve the impedance adjustment effect of impedance adjustment section by step on the basis of the position of the branch and the branch can be arranged to improve the gain and intermodulation performance of the antenna, and the position of the second branch and the second branch can be arranged to improve the impedance adjustment effect of the second impedance adjustment section by step on the basis of the second straight line section to improve the gain and intermodulation performance of the antenna.
In conclusion, the invention has the following beneficial effects:
1. the broadband can meet the use requirements of the existing mainstream mobile communication system;
2. through the design of the isolation belt, excellent isolation is realized, and the signal interference between adjacent ports is effectively reduced;
3. the size is light, thin and compact, and the device can be applied to a shell with a circular structure and can ensure the utilization rate of the internal space of the shell;
4. the structure is simple, and the intermodulation performance is good.
In general, the invention can effectively reduce the signal interference between adjacent ports while realizing ultra-wide bandwidth, can be applied to a shell with a circular structure, and can ensure the utilization rate of the internal space of the shell.
Drawings
FIG. 1 is a schematic diagram of broadband high-isolation antennas;
FIG. 2 is a cross-sectional view taken along plane C-C of FIG. 1;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is a sectional view taken along the plane G-G in fig. 1.
The reference numbers of the components are 1, a shell, 2, a reinforcing mesh, 3, th monopole subassembly, 31, th radiating element, 32, th grounding element, 4, a second monopole subassembly, 41, a second radiating element, 42, a second grounding element, 5, th isolation band, 51, th isolation section, 52, a second isolation section, 6, a second isolation band, 7, th impedance adjusting section, 71, th impedance adjusting section, 8, a second impedance adjusting section, 81, a second straight section, 9, a spacing, 10, th branch section, 11, a second branch section, 12 and a third branch section.
Detailed Description
The present invention is further described in detail below with reference to the attached figures.
Example a broadband high isolation antenna, as shown in fig. 1 and fig. 4, comprising a circular housing 1, and a th monopole subassembly 3 and a second monopole subassembly 4 disposed adjacently, wherein the th monopole subassembly 3 comprises a th radiator 31 and a th ground 32, the second monopole subassembly 4 comprises a second radiator 41 and a second ground 42, and a 853 th ground 32 and the second ground 42 are disposed side by side, which can achieve broadband coverage performance and meet the use requirements of the existing mainstream mobile communication systems, a th isolation strip 5 extending between the th ground and the second ground is disposed between the th radiator 31 and the second radiator 41, a th isolation strip 5 is used for reducing the influence between the th monopole subassembly 3 and the second monopole subassembly 4, thereby achieving excellent isolation performance, a th ground 32 side remote from the th radiator 31 is provided with a second ground subassembly 3 extending to the second monopole subassembly 4, and a second monopole subassembly 23 is disposed axially far from the second monopole subassembly 31, and the second monopole subassembly 23 is disposed axially through the second radiator 6 and the second monopole subassembly 23.
The th isolation belt 5 comprises a th isolation section 51 and a th isolation section 51 extending between the th radiation element 31 and the second radiation element 41, wherein the th isolation section 51 and the second isolation section 52 are vertically arranged and then are in a T shape, and the side edge of the second isolation section 52 departing from the th isolation section 51 is matched with the inner wall of the shell 1.
The monopole assembly 3 and the second monopole assembly 4 can realize omnidirectional radiation of two ports, effectively shorten the long distance 9 required by avoiding signal interference between adjacent ports, so as to effectively improve the space utilization rate inside the housing 1 and further reduce the space occupied by the whole, and have the advantage of excellent intermodulation, and different ports can be flexibly applied to different related fields.
In the present embodiment, the th monopole assembly 3 and the second monopole assembly 4 adopt the same technical structure, and therefore, the repeated description of the second monopole assembly 4 is omitted hereinafter.
The th monopole assembly 3, the second monopole assembly 4, the th isolation band 5 and the second isolation band 6 are all arranged in the housing 1, the th monopole assembly 3 and the second monopole assembly 4 are circumferentially arranged around the same circle center, and the axial directions of the two are acute angles, namely, the th radiation piece 31 and the second radiation piece 41 are respectively positioned on two sides of the acute angle and are respectively closer to the extension amplifying direction than the th grounding piece 32 and the second grounding piece 42.
Because the shape of casing 1 is circular, and two monopole subassemblies are square, in order to save the space of casing 1 inside when the monopole subassembly that the adaptation appearance is the rectangle, current casing 1 is also the rectangle generally, but the rectangular casing 1 of single can not satisfy people to the requirement that the design is growing day by day, through this technical scheme, when realizing two port signal mutual isolation, still can place two monopole subassemblies simultaneously in casing 1 that the inner space is relatively less to be convenient for adapt to the design requirement that people are growing day by day.
The reinforcing net 2 is of a net structure, bodies are formed on the inner wall of the shell 1, the reinforcing net 2 can enable the monopole subassembly 3 and the second monopole subassembly 4 to be abutted and pressed tightly, meanwhile, the contact area between the reinforcing net 2 and the two monopole subassemblies can be reduced, and the reinforcing net 2 can be used for stably fixing the monopole subassembly 3 and the second monopole subassembly 4 in the shell 1, so that the capability of shifting or loosening the monopole subassembly 3 and the second monopole subassembly 4 when being impacted by external force is improved.
The th radiator 31 is provided with a impedance adjusting section 7 with a rectangular cross section on the side close to the ground piece, the th ground piece 32 is provided with a second impedance adjusting section 8 with a trapezoidal cross section on the side close to the th radiator 31, and a space 9 is left between the th impedance adjusting section 7 and the second impedance adjusting section 8.
The th impedance adjusting section 7 comprises a th straight line section 71 for impedance adjustment, the second impedance adjusting section 8 comprises a th straight line section 81 for impedance adjustment and is close to the th straight line section 71, and the distance 9 is arranged between the th straight line section 71 and the second straight line section 81.
On the th radiator 31, the side where the impedance adjustment section 7 is located is provided with a th branch 10 for adjusting impedance, the th branch 10 is adjacent and smoothly disposed at the end of the th impedance adjustment section 7, on the th grounding member 32, the side where the second impedance adjustment section 8 is located is provided with a second branch 11 for adjusting impedance, the second branch 11 is adjacent and smoothly disposed at the second impedance adjustment section 8, on the th grounding member 32, the side where the second impedance adjustment section 8 is located is provided with a third branch 12 adjacent to the second branch 11.
In this embodiment, the th branches 10 are protrusions with rectangular cross sections, the th branches 10 are two and symmetrically disposed at two sides of the th impedance adjusting section 7, the second branches 11 are two rectangles with two connected cross sections and different heights from the side of the grounding member, and the second branches 11 are two and symmetrically disposed at two sides of the grounding member
The length of the th straight line section 71 is 10-35 mm, the length of the second straight line section 81 is 10-50 mm, the distance 9 is 0.5-3 mm, impedance matching can be realized after the conventional microstrip line is omitted in monopole antenna design, so that impedance adjustment can be effectively realized, the production and processing cost of enterprises can be reduced, the overall appearance can be lighter and thinner, ultra-wide band radiation can be realized, the antenna gain and intermodulation performance can be improved, and the third branch section 12 is a protruding part with a rectangular cross section.
the radiation piece 31 is a circular arc radiation piece, the the grounding piece 32 is a rectangular grounding piece, the the radiation piece 31 and the the grounding piece 32 between the polarization direction, and the polarization direction is the conventional technical means in this technical field, the connecting line is a coaxial cable, the inner conductor of the connecting line is connected with the grounding piece 32, the outer conductor of the connecting line is connected with the radiation piece 31, through the length of the bottom side of the rectangle of the the radiation piece 31, the length of the upper bottom of the trapezoid of the grounding piece 32, and the distance 9 between the two bottom sides, not only can be used to realize impedance matching, but also can abandon the microstrip line of the monopole antenna, through reducing the application of additional accessories, the scheme can obtain a more simplified structure, the enterprise production and processing operations are more concise, further the production and processing costs of the enterprise can be reduced, the overall appearance can be further made to be more light and thin, radiation of ultra wide frequency band can be realized, further the antenna gain and intermodulation performance can be further improved.
, the shape of the branch 10 and the position of the branch facilitate increasing the impedance adjusting effect of the impedance adjusting section 7 by on the basis of the straight line section 71, so as to improve the performance of gain and intermodulation of the antenna, and the position of the second branch 11 and the second branch 11 facilitate increasing the impedance adjusting effect of the second impedance adjusting section 8 by on the basis of the second straight line section 81, so as to improve the performance of gain and intermodulation of the antenna.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
- A broadband high-isolation antenna of , comprising a monopole subassembly (3) and a second monopole subassembly (4) which are adjacently arranged, wherein the 0 monopole subassembly (3) comprises a 1 radiator (31) and a ground connector (32), the second monopole subassembly (4) comprises a second radiator (41) and a second ground connector (42), the broadband high-isolation antenna is characterized in that the ground connector (32) and the second ground connector (42) are arranged side by side, a isolation strip (5) for improving isolation is arranged between the monopole subassembly (3) and the second monopole subassembly (4), and a side of the ground connector (32) far away from the radiator (31) is provided with a second isolation strip (6) extending to a side of the second ground connector (42) far away from the second radiator (41) ).
- 2. broadband high isolation antenna according to claim 1, comprising a circular housing (1), wherein the th monopole module (3), the second monopole module (4), the th isolation strip (5) and the second isolation strip (6) are all disposed in the housing (1).
- 3. Wide band high isolation antenna according to claim 1, wherein the monopole assembly (3) and the second monopole assembly (4) are circumferentially arranged around and axially at an acute angle.
- 4. kinds of broadband high-isolation antenna according to claim 2, wherein the housing (1) is provided with a reinforcing net (2) for reinforcing each component, the reinforcing net (2) is matched with the inner wall of the housing (1).
- 5. broadband high-isolation antenna according to claim 2, wherein the isolation strip (5) includes a isolation segment (51) and a isolation segment (51) extending between the radiator (31) and the second radiator (41), the isolation segment (51) and the second isolation segment (52) are vertically arranged and then form a T-shape, and the side of the second isolation segment (52) facing away from the isolation segment (51) is matched with the inner wall of the housing (1).
- 6. A broadband high-isolation antenna according to claim 1, wherein the radiation element (31) has a branch (10) for adjusting impedance and a impedance adjusting section (7) with a rectangular cross section on the side near the ground element (32), the ground element (32) has a second branch (11) for adjusting impedance and a second impedance adjusting section (8) with a trapezoidal cross section on the side near the radiation element (31), and the ground element (32) and the radiation element (31) are both conductors.
- 7. kinds of broadband high-isolation antenna according to claim 6, wherein the impedance adjusting section (7) includes a th straight line section (71) for impedance adjustment, the second impedance adjusting section (8) includes a th straight line section (81) for impedance adjustment and close to the th straight line section (71), and a space (9) is left between the th straight line section (71) and the second straight line section (81).
- 8. The kinds of broadband high-isolation antennas of claim 6, wherein the number of the th branches (10) is at least two, and the branches are respectively disposed at two ends of the th impedance-adjusting section (7) along its extending direction.
- 9. The kind of broadband high-isolation antennas of claim 6, wherein the number of the second branches (11) is at least two, and the second branches are respectively disposed at two ends of the second impedance adjusting section (8) along their extending direction.
- 10. The kind of broadband high-isolation antenna of claim 6, wherein the ground element (32) is provided with a third branch (12) adjacent to the second branch (11) at a side where the second impedance tuning section (8) is located.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971831 | 2019-10-14 | ||
| CN2019109718316 | 2019-10-14 |
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| CN110739542A true CN110739542A (en) | 2020-01-31 |
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| CN201911008875.5A Pending CN110739542A (en) | 2019-10-14 | 2019-10-22 | kinds of wide-band high-isolation antenna |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2298991A1 (en) * | 2000-02-18 | 2001-08-18 | Telecommunications Research Laboratories | A broadband compact slot dipole/monopole and electric dipole/monopole combined antenna |
| CN102623793A (en) * | 2011-02-01 | 2012-08-01 | 华硕电脑股份有限公司 | Multi-input multi-output antenna system |
| CN104157969A (en) * | 2014-08-15 | 2014-11-19 | 西安电子科技大学 | Broadband MIMO dual-antenna based on adjusting impedance matching technology |
| CN106532235A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | 4*4 ultra-wideband MIMO antenna |
| CN106785370A (en) * | 2016-12-29 | 2017-05-31 | 重庆邮电大学 | A kind of mimo antenna of the high-isolation for mobile terminal |
| CN210607632U (en) * | 2019-10-16 | 2020-05-22 | 佛山科新锘通讯有限公司 | Broadband high-isolation antenna |
-
2019
- 2019-10-22 CN CN201911008875.5A patent/CN110739542A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2298991A1 (en) * | 2000-02-18 | 2001-08-18 | Telecommunications Research Laboratories | A broadband compact slot dipole/monopole and electric dipole/monopole combined antenna |
| CN102623793A (en) * | 2011-02-01 | 2012-08-01 | 华硕电脑股份有限公司 | Multi-input multi-output antenna system |
| CN104157969A (en) * | 2014-08-15 | 2014-11-19 | 西安电子科技大学 | Broadband MIMO dual-antenna based on adjusting impedance matching technology |
| CN106532235A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | 4*4 ultra-wideband MIMO antenna |
| CN106785370A (en) * | 2016-12-29 | 2017-05-31 | 重庆邮电大学 | A kind of mimo antenna of the high-isolation for mobile terminal |
| CN210607632U (en) * | 2019-10-16 | 2020-05-22 | 佛山科新锘通讯有限公司 | Broadband high-isolation antenna |
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