CN109742546B - Dual-polarized antenna with planar monopole and gap structure - Google Patents
Dual-polarized antenna with planar monopole and gap structure Download PDFInfo
- Publication number
- CN109742546B CN109742546B CN201910083077.2A CN201910083077A CN109742546B CN 109742546 B CN109742546 B CN 109742546B CN 201910083077 A CN201910083077 A CN 201910083077A CN 109742546 B CN109742546 B CN 109742546B
- Authority
- CN
- China
- Prior art keywords
- monopole
- slot
- dielectric substrate
- feed
- antenna
- 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
Landscapes
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a dual-polarized antenna with a planar monopole and a gap structure, wherein a planar monopole antenna unit is formed by respectively arranging a monopole radiation oscillator and a metal floor on the upper surface and the lower surface of a dielectric substrate; forming a slot antenna unit by forming a slot on a metal floor; a feed structure unit is formed by the metal connecting part and two feed ports penetrating through the medium substrate and is used for electrically connecting the monopole radiation oscillator and the metal floor; therefore, two different linearly polarized waves at the same frequency are realized through different feeding modes by utilizing the characteristic of orthogonal polarization of the two antenna units. In addition, the planar monopole antenna unit and the slot antenna unit have the characteristics of low profile, light weight and easiness in processing, so that the dual-polarized antenna formed by the planar monopole antenna unit and the slot antenna unit also has the advantages of simple structure, small size and easiness in processing and manufacturing.
Description
Technical Field
The invention relates to a dual-polarized antenna, in particular to a dual-polarized antenna with a planar monopole and a slot structure.
Background
The dual-polarized antenna enables the antenna to radiate polarized waves in different directions through different feeding modes, and is beneficial to realizing effective diversity in transmission, thereby resisting the reduction of communication quality caused by multipath fading and being used as a transmitting antenna or a receiving antenna in an MIMO system.
The existing dual-polarized antenna has low relative radiation polarization purity and low design flexibility.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides the dual-polarized antenna with the planar monopole and the slot structure, which has the characteristics of simple structure, low section and light weight, is easy to process and manufacture, and has higher polarization purity and design flexibility.
The technical scheme is as follows: the invention relates to a dual-polarized antenna with a planar monopole and a slot structure, which comprises a dielectric substrate, a planar monopole antenna unit, a slot antenna unit and a feed structure unit, wherein the dielectric substrate is provided with a plurality of slots; the dielectric substrate is provided with an upper surface and a lower surface which are parallel to each other; the planar monopole antenna unit comprises a metal floor and a monopole radiation oscillator; the metal floor is rectangular and is arranged on the lower surface of the dielectric substrate; the monopole radiation oscillator is in a strip shape and is arranged on the upper surface of the medium substrate, and the length direction of the strip monopole radiation oscillator vertically and equally divides the long edge of the rectangular metal floor; the slot antenna unit comprises a slot with two closed ends and a through hole formed in the thickness direction of the metal floor, and the extending direction of the slot and the length direction of the monopole radiation oscillator are both positioned on the same plane vertical to the surface of the dielectric substrate; the feed structure unit comprises a metal connecting part and two feed ports, the metal connecting part is arranged at one end of the monopole radiation oscillator, the two feed ports are respectively connected to two side edges of the gap, and the other ends of the two feed ports vertically penetrate through the dielectric substrate and are respectively connected to two sides of the metal connecting part.
Furthermore, in order to improve the matching performance of the planar monopole antenna unit, the metal floor is disposed on one side of the lower surface of the dielectric substrate, the monopole radiation oscillators are disposed on the other side of the upper surface of the dielectric substrate, and the metal floor and the monopole radiation oscillators are staggered in the thickness direction of the dielectric substrate.
Further, the dual-polarized antenna further comprises a feed line, and the two feed ports are electrically connected with the feed line respectively.
When the feed line carries out even-mode feed through the two feed ports, the planar monopole antenna unit works and radiates vertical polarized waves.
When the feed line performs odd-mode feeding through the two feed ports, the slot antenna unit operates and radiates a horizontally polarized wave.
Has the advantages that: compared with the prior art, the planar monopole antenna unit is formed by respectively arranging the monopole radiation oscillator and the metal floor on the upper surface and the lower surface of the dielectric substrate; forming a slot antenna unit by forming a slot on a metal floor; a feed structure unit is formed by the metal connecting part and two feed ports penetrating through the medium substrate and is used for electrically connecting the monopole radiation oscillator and the metal floor; therefore, by utilizing the characteristic of polarization orthogonality of the two antenna units, two different linearly polarized waves on the same frequency are realized through different feeding modes, and the polarization purity is higher. In addition, the planar monopole antenna unit and the slot antenna unit have the characteristics of low profile, light weight and easiness in processing, so that the dual-polarized antenna formed by the planar monopole antenna unit and the slot antenna unit has higher design flexibility, and also has the advantages of simple structure, small size and easiness in processing and manufacturing.
Drawings
Fig. 1 is a schematic structural view of an upper surface of a dual polarized antenna of the present invention;
FIG. 2 is a partially enlarged perspective view of the feed structure unit of FIG. 1;
fig. 3 is a schematic view of the structure of the lower surface of the dual polarized antenna of the present invention;
fig. 4 is a schematic top view of the dual-polarized antenna of fig. 3;
fig. 5 is a schematic diagram of a right-side view of the dual-polarized antenna of fig. 3;
FIG. 6 is the calculated return loss characteristics of the antenna in both the even and odd modes of the feed using HFSS software;
FIG. 7 is the main and cross-polarized radiation patterns of even-mode fed lower xoy, xoz, yoz planes calculated using HFSS software;
fig. 8 is the radiation patterns of the main polarization and cross polarization of the odd mode feed lower xoy plane, xoz plane, yoz plane calculated using HFSS software.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the present embodiment discloses a dual-polarized antenna with a planar monopole and slot structure, which includes a dielectric substrate 1, a metal floor 2, a monopole radiating element 3, a slot 4, a metal connecting portion 5, and two feeding ports 6.
The dielectric substrate 1 is rectangular and has an upper surface and a lower surface parallel to each other, and the antenna unit is formed on the dielectric substrate 1. Referring to the orientation shown in fig. 5, the metal floor 2 at the bottom layer is disposed on the right side of the lower surface of the dielectric substrate 1, the monopole radiation oscillator 3 at the top layer is disposed on the left side of the upper surface of the dielectric substrate 1, and the metal floor 2 and the monopole radiation oscillator 3 together form a planar monopole antenna unit of the dual-polarized antenna.
Specifically, the metal floor 2 has a rectangular structure, and the length of the long side is about a half wavelength, and the length of the short side is about a quarter wavelength. In this embodiment, one long side of the metal floor 2 is flush with one side edge of the lower surface of the dielectric substrate 1, and the other long side is located in the middle area of the lower surface. Preferably, the length of the long side of the metal floor 2 is a half wavelength and the length of the short side is a quarter wavelength.
The monopole radiating element 3 is a long strip of metal with a length of about a quarter wavelength. In the present embodiment, the length of the elongated monopole radiation element is preferably a quarter wavelength. The monopole radiation oscillator 3 extends from the other side edge of the upper surface of the dielectric substrate 1 to the middle of the upper surface, and the length direction of the monopole radiation oscillator vertically equally divides the long edge of the metal floor 2.
The metal floor 2 is provided with a gap 4 with two closed ends and a through hole formed in the thickness direction of the metal floor 2, the extending direction of the gap 4 and the length direction of the monopole radiation oscillator 3 are both positioned on the same plane vertical to the surface of the medium substrate 1, and the gap 4 is used as a gap antenna unit of the dual-polarized antenna. Specifically, in this embodiment, the length of the slot 4 is preferably a quarter of the guided wave wavelength.
The metal connection 5 and the two feed ports 6 constitute a feed structural unit. The two feeding ports 6 are respectively connected to two sides of the metal connecting portion 5, and the other ends of the two feeding ports 6 penetrate through the dielectric substrate 1 and are respectively connected to two side edges of the gap 4 on the lower surface of the dielectric substrate 1.
Referring to fig. 5 again, the monopole radiation oscillators 3 and the metal floor 2 are overlapped in a staggered manner in the thickness direction of the dielectric substrate 1. That is, one end of the monopole radiation element 3 positioned at one side of the upper surface extends beyond the edge of the metal floor 2 positioned at the other side of the lower surface by a certain length and is then connected to the metal connection part 5, thereby improving the matching performance of the planar monopole antenna unit.
In addition, the positions of the two feed ports 6 and the metal connecting portions 5 with respect to the slot 4 can change the self-impedance of the slot antenna element, so that the matching performance of the slot antenna element can also be improved.
Further, the dual-polarized antenna further comprises a feed line, and the two feed ports 6 are electrically connected with the feed line respectively. Specifically, when the feed line performs even mode feeding through the two feed ports 6, the planar monopole antenna unit operates and radiates a vertically polarized wave. When the feed line is fed in odd mode through the two feed ports 6, the slot antenna element operates and radiates a horizontally polarized wave.
As shown in fig. 6, in the present embodiment, when the dielectric substrate 1 is designed to have a dielectric constant of 4.4 and a thickness of 1 mm, the return loss of the antenna in two feeding modes is calculated by using HFSS software. Under the odd mode feeding mode, the working frequency of the antenna is 2.4GHz, and the-10 dB impedance bandwidth of the antenna is 41.7% (1.9GHz-2.9 GHz); in the even mode feed mode, the operating frequency of the antenna is 2.4GHz, and the-10 dB impedance bandwidth of the antenna is 35.3% (2.1GHz-3.0 GHz).
As shown in fig. 7, the dual-polarized antenna of the planar monopole and slot structure of the present embodiment utilizes the radiation directions of main polarization and cross polarization of xoy plane, xoz plane and yoz plane under the even-mode feeding condition calculated by HFSS software. Where the cross polarization of the xoz plane and the yoz plane is below-30 dB, not shown.
As shown in fig. 8, the dual-polarized antenna of the planar monopole and slot structure of the present embodiment utilizes the radiation directions of main polarization and cross polarization of xoy plane, xoz plane and yoz plane under the odd-mode feeding condition calculated by HFSS software. Where the cross polarization of the xoz plane and the yoz plane is below-30 dB, not shown.
The test proves that the dual-polarized antenna with the planar monopole and the slot structure has two working modes with different polarizations and the same working frequency, and has excellent performance.
Claims (5)
1. A dual-polarized antenna with a planar monopole and a slot structure is characterized by comprising a dielectric substrate (1), a planar monopole antenna unit, a slot antenna unit and a feed structure unit;
the dielectric substrate (1) is provided with an upper surface and a lower surface which are parallel to each other;
the planar monopole antenna unit comprises a metal floor (2) and a monopole radiation oscillator (3); the metal floor (2) is rectangular and is arranged on the lower surface of the dielectric substrate (1); the monopole radiation oscillator (3) is in a strip shape and is arranged on the upper surface of the dielectric substrate (1), and the long edge of the rectangular metal floor (2) is vertically and equally divided in the length direction of the strip monopole radiation oscillator (3);
the slot antenna unit comprises a slot (4) with two closed ends and a through hole formed in the thickness direction of the metal floor (2), and the extending direction of the slot (4) and the length direction of the monopole radiating oscillator (3) are both positioned on the same plane vertical to the surface of the dielectric substrate (1);
the feed structure unit comprises a metal connecting part (5) and two feed ports (6), the metal connecting part (5) is arranged at one end of the monopole radiation oscillator (3), the two feed ports (6) are respectively connected to two side edges of the gap (4), and the other ends of the two feed ports (6) vertically penetrate through the dielectric substrate (1) and are respectively connected to two sides of the metal connecting part (5);
the two feed ports (6) are respectively and electrically connected with the feed circuit; when the feed line carries out even-mode feed through the two feed ports (6), the planar monopole antenna unit works and radiates vertical polarized waves; when the feed line is fed in odd mode through two feed ports (6), the slot antenna element operates and radiates a horizontally polarized wave.
2. The dual polarized antenna of the planar monopole and slot structure according to claim 1, wherein the metal floor (2) is disposed on one side of the lower surface of the dielectric substrate (1), the monopole radiation oscillator (3) is disposed on the other side of the upper surface of the dielectric substrate (1), and the metal floor (2) and the monopole radiation oscillator (3) are staggered in the thickness direction of the dielectric substrate (1).
3. The dual polarized antenna of planar monopole and slot structure according to claim 1, characterized in that the length of the long side of said metal floor (2) is half wavelength and the length of the short side is quarter wavelength.
4. A dual polarized antenna of planar monopole and slot structure according to claim 3, characterized in that the length of said monopole radiating element (3) is a quarter wavelength.
5. The dual polarized antenna of the planar monopole and slot structure according to claim 3, characterized in that the length of the slot (4) is a quarter of the guided wave wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083077.2A CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083077.2A CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109742546A CN109742546A (en) | 2019-05-10 |
| CN109742546B true CN109742546B (en) | 2020-12-25 |
Family
ID=66366512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910083077.2A Active CN109742546B (en) | 2019-01-28 | 2019-01-28 | Dual-polarized antenna with planar monopole and gap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109742546B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512815B (en) * | 2022-02-22 | 2024-04-19 | 上海交通大学 | Non-self-complementary broadband antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152517A1 (en) * | 2012-11-30 | 2014-06-05 | Hon Hai Precision Industry Co., Ltd. | Antenna structure for mimo application |
-
2019
- 2019-01-28 CN CN201910083077.2A patent/CN109742546B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152517A1 (en) * | 2012-11-30 | 2014-06-05 | Hon Hai Precision Industry Co., Ltd. | Antenna structure for mimo application |
Non-Patent Citations (2)
| Title |
|---|
| 《Broadband Circularly Polarized Printed Slot-Monopole Antenna》;Trivesh Kumar et-al;《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》;20131118;第12卷;第1531-1534页 * |
| 《Compact Dual-Polarized Antenna Combining Printed Monopole and HalfSlot》;Xin Wang et-al;《2009 IEEE Antennas and Propagation Society International Symposium》;20090605;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109742546A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107342458B (en) | Angle-feed broadband high-isolation dual-polarized antenna | |
| CN110534924B (en) | Antenna module and electronic equipment | |
| EP3289635B1 (en) | Antennas including an array of dual radiating elements and power dividers for wireless electronic devices | |
| US8854270B2 (en) | Hybrid multi-antenna system and wireless communication apparatus using the same | |
| Li et al. | A compact planar MIMO antenna system of four elements with similar radiation characteristics and isolation structure | |
| US10749272B2 (en) | Dual-polarized millimeter-wave antenna system applicable to 5G communications and mobile terminal | |
| EP2504884B1 (en) | Mimo antenna | |
| CN109037935B (en) | Millimeter wave low-profile broadband antenna | |
| CN207624912U (en) | A kind of double frequency dipole antenna and micro-base station | |
| CN110165413A (en) | Antenna system, broadband microstrip antenna and aerial array | |
| CN112615147B (en) | Compact low-coupling extensible MIMO antenna based on orthogonal mode | |
| CN112332085B (en) | Ka wave band double circular polarization switchable receiving and transmitting antenna | |
| CN112436294A (en) | Millimeter wave dual-frequency dual-polarization common-aperture antenna with high isolation and low profile | |
| Abdullah et al. | Compact four-port MIMO antenna system at 3.5 GHz | |
| CN114824779B (en) | Single-layer low-profile broadband dual-polarized patch antenna | |
| CN109742545B (en) | Dual-polarized antenna with planar monopole and half-slot structure | |
| CN114374085A (en) | Dual-polarization hybrid antenna for 5G millimeter wave dual-band application | |
| CN114122682A (en) | Antenna unit, antenna array and electronic equipment | |
| CN209929488U (en) | Terminal antenna | |
| CN110996496A (en) | Circuit board, antenna assembly and dual polarized antenna | |
| CN109037932B (en) | Broadband multi-patch antenna | |
| CN114639956A (en) | Microwave and millimeter wave large-frequency-ratio common-aperture antenna combining MIMO technology | |
| CN213989193U (en) | Radiation unit, antenna and base station | |
| CN109742546B (en) | Dual-polarized antenna with planar monopole and gap structure | |
| CN109659687A (en) | A kind of six unit multiband mimo antennas suitable for 5G mobile terminal |
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 | ||
| CB02 | Change of applicant information |
Address after: 210003 Gulou District, Jiangsu, Nanjing new model road, No. 66 Applicant after: NANJING University OF POSTS AND TELECOMMUNICATIONS Address before: 210000 Jiangsu city of Nanjing province Ya Dong new Yuen Road No. 9 Applicant before: NANJING University OF POSTS AND TELECOMMUNICATIONS |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |