CN113991308B - High-gain wide-band electromagnetic dipole medium antenna - Google Patents
High-gain wide-band electromagnetic dipole medium antenna Download PDFInfo
- Publication number
- CN113991308B CN113991308B CN202111264515.9A CN202111264515A CN113991308B CN 113991308 B CN113991308 B CN 113991308B CN 202111264515 A CN202111264515 A CN 202111264515A CN 113991308 B CN113991308 B CN 113991308B
- Authority
- CN
- China
- Prior art keywords
- metal
- medium
- antenna
- input ports
- electromagnetic dipole
- 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
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
-
- 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
-
- 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
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- 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
- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to a high-gain wide-band electromagnetic dipole medium antenna, which comprises a rectangular radiation medium overhead arranged above a metal reflection floor, wherein the lower surface of the rectangular radiation medium is parallel to the metal reflection floor, a pair of collinear metal strip lines parallel to the long side of the rectangular radiation medium are symmetrically attached to the lower surface of the rectangular radiation medium, and the inner ends of the metal strip lines are connected with a pair of input ports through metal probes. The antenna generates an electric dipole by differentially exciting a pair of metal strips and simultaneously generates a magnetic dipole by exciting an upper rectangular radiation medium, thereby forming the electromagnetic dipole antenna to realize wide impedance bandwidth and high front-to-back ratio. Has the advantages of miniaturization, wide bandwidth, high isolation, high gain, low front-to-back ratio, low cross polarization and the like.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a high-gain wide-band electromagnetic dipole medium antenna.
Background
5G NR is a unified and more powerful global standard for the new type of 5G wireless air interface. It will provide faster and greater capacity for future communication systems between mobile devices and base stations in cellular networks. The new spectrum of 5G NR below 6GHz is an important frequency band for 5G network deployment, providing the best balance between coverage and capacity, in particular N77 (3300-4200 MHz), N78 (3300-3800 MHz), N79 (4400-5000 MHz). Therefore, how to develop new applications in these 5G NR spectra using advanced techniques and improve performance is of great importance. The large-scale MIMO technology is one of the important technologies commonly used in the radio frequency front end, and forms an array in a spatial multiplexing mode, so that the channel capacity and the gain performance are improved. However, the antenna assembly array is bulky and heavy, which poses serious challenges for miniaturized mimo systems. Therefore, a miniaturized and lightweight antenna is an urgent need for mimo array in the future 5G NR.
The dielectric resonator antenna has the advantages of small loss, small volume, light weight, high design freedom, selectable dielectric constant and the like, and is widely applied to antennas. However, the height of these antennas is always more than 0.20λ 0 (λ 0 Is the central working frequency f 0 Free space wavelength at) which is still too high to meet the stringent requirements for miniaturization and weight reduction of the base station. The difficulty is that the deteriorated radiation pattern and impedance matching are deteriorated. To solve this problem, dielectric ceramics having a high dielectric constant are used in antennas. However, the use of a higher dielectric constant results in an increase in the unloaded quality factor Q of the operating mode in the antenna. Q is inversely proportional to the bandwidth, i.e. a high Q will result in a narrowing of the bandwidth of the antenna or, in the worst case, no radiation at all. In addition, high back lobe radiation and low gain are also major challenges faced by most dielectric antennas.
Disclosure of Invention
The invention aims at: the defects of the prior art are overcome, and the high-gain wide-band electromagnetic dipole medium antenna with a simple structure is provided.
In order to achieve the purpose of the invention, the high-gain wide-band electromagnetic dipole dielectric antenna provided by the invention is characterized in that: the metal strip line is characterized by comprising a rectangular radiation medium which is overhead arranged above a metal reflection floor, wherein the lower surface of the rectangular radiation medium is parallel to the metal reflection floor, a pair of collinear metal strip lines parallel to the long sides of the rectangular radiation medium are symmetrically attached to the lower surface of the rectangular radiation medium, and the inner ends of the metal strip lines are connected with a pair of input ports through metal probes.
The invention integrates rectangular radiation medium and metal strip line to realize magnetic dipole and electric dipole functions. The electromagnetic dipole antenna benefits from the unique working principle of the electromagnetic dipole antenna, and the radiation back lobes of the electromagnetic dipole can cancel each other out, so that the front-to-back ratio of the antenna radiation pattern is improved. The design adopts a dielectric material with high dielectric constant, thereby realizing miniaturization of the antenna. In addition, the space reserved between the overhead dielectric and the metal reflective ground can enhance gain and bandwidth and provide stable gain throughout the impedance bandwidth.
Wherein a pair of metal strap lines are on the same straight line, and the rectangular supporting medium is positioned right below the center of the rectangular radiating medium and is perpendicular to but does not intersect with the pair of metal strap lines. The rectangular supporting medium is positioned right above the center of the metal reflecting floor. The SMA input port is perpendicular to the metal reflective floor. Meanwhile, the SMA input port penetrates through a circular through hole in the metal reflection floor and is connected with one end of the metal belt wire.
The invention provides a high-gain wide-band electromagnetic dipole medium antenna, which integrates a rectangular radiation medium and a metal strip line to realize the functions of a magnetic dipole and an electric dipole respectively. The electromagnetic dipole antenna benefits from the unique working principle of the electromagnetic dipole antenna, and the radiation back lobes of the electromagnetic dipole can cancel each other out, so that the front-to-back ratio of the antenna radiation pattern is improved. The electromagnetic dipole antenna structure of the overhead high-dielectric constant medium is a key technology in the design. The antenna has small volume, can enhance the antenna gain, provides a wide impedance bandwidth, and can provide gain with stable size in the impedance bandwidth. The antenna has the advantages of wide impedance bandwidth, small size, high isolation, high gain, low cross polarization and the like.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is an exploded view of an antenna according to an embodiment of the present invention.
Fig. 2 is a top perspective view of an antenna according to an embodiment of the present invention.
Fig. 3 is a side perspective view of an antenna according to an embodiment of the present invention.
Fig. 4 is a graph of the performance parameters of the reflection coefficient and the radiation gain of the antenna according to the embodiment of the present invention when excited differentially.
Fig. 5 is an E-plane and H-plane radiation pattern at 3.4GHz for an antenna of an embodiment of the present invention.
Fig. 6 is an E-plane and H-plane radiation pattern at 3.7GHz for an antenna of an embodiment of the present invention.
The reference numerals in the figures are shown below:
1-rectangular radiation medium, 2-supporting medium, 3-metal strip line, 4-metal reflecting floor, 5-circular through hole, 6-forward signal input port and 7-reverse signal input port.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
As shown in fig. 1 to 3, the high-gain wide-band electromagnetic dipole dielectric antenna of the present embodiment includes a rectangular radiation dielectric 1 disposed overhead above a metal reflection floor 4, and the lower surface of the rectangular radiation dielectric 1 is parallel to the metal reflection floor 4. The lower surface of the rectangular radiation medium 1 is symmetrically attached with a pair of collinear metal strips 3 parallel to the long side of the rectangular radiation medium 1, and the inner ends of the metal strips 3 are connected with a pair of input ports (SMA input ports are selected in this example) through metal probes, wherein 6 is a forward signal input port, and 7 is a reverse signal input port. In this example, the middle of a rectangular radiation medium 1 is supported above the center of a metal reflective floor 4 by a support medium 2. The supporting medium 2 is rectangular parallelepiped, its side faces are perpendicular to the metal strip lines 3, and gaps are provided between the supporting medium 2 and the metal strip lines 3. As shown in fig. 1, a circular through hole 5 is formed in the metal reflective floor 4, and the sma interface is fixed through the circular through hole 5 formed in the metal reflective floor 4. The shell part of the SMA interface is an outer conductor which is directly welded and fixed with a circular through hole 5 of the metal reflection floor 4, and the inner conductor is used as a metal probe (or is connected with the inner end of the metal strip wire 3 through the metal probe).
In this case, the SMA coaxial head is used for feeding, and the combination of the coaxial head and the structure is most suitable for industrial manufacturing. Of course, in theory, other interface forms may be used, such as: by arranging a bottom substrate and feeding through a microstrip transmission line.
In this example, the rectangular radiation medium 1 is a dielectric ceramic material with a dielectric constant ε r1 =20, loss tangent tan δ=7×10 -4 Volume w 1 ×l 2 ×h 1 . The rectangular supporting medium 2 is used for supporting the rectangular radiating medium 1, and is positioned right below the center of the rectangular radiating medium 1, the material is the same as that of the rectangular radiating medium 1, and the volume of the rectangular supporting medium 2 is w 3 ×w 3 ×h 2 . The distance of the lower surface of the rectangular radiation medium 1 from the metal reflective floor 4 (i.e. the height h of the rectangular support medium 2 2 ) In relation to the operating frequency of the antenna, in this case h 2 ＝6mm。
Under the condition of differential feeding, a pair of equal-amplitude reverse radio frequency signals are respectively transmitted along a pair of microstrip feeder lines, and the input differential signals are utilized to realize the excitation of the antenna. The metal reflective floor 4 has a dimension l 1 ×l 1 Two SMA input ports (forward signal input port 6 and reverse signal input port 7) penetrate through the circular through hole 5 on the metal reflection floor 4 to be connected with one end of the metal strap wire, and the circle center is overlapped with the circle center of the circular through hole 5 on the metal reflection floor 4, wherein the lengths of the metal strap wire are l 3 The width is w 2 The diameter of the round hole is d 1 The center-to-center distance between the two input ports is S.
The detailed dimensions of the antenna of this example are listed in table I. The antenna portion thereof has electrical dimensions of 0.43mm by 0.19mm by 0.14mm.
Table I detailed dimensions of the antenna
As shown in fig. 4, the reflection coefficient and the antenna gain performance parameter of the differential port excitation antenna are shown in the embodiment. It can be seen that the antenna achieves 15% impedance bandwidth at-15 dB in the 3.27-3.8GHz range, and that the gain curve is only slightly fluctuating between 7.9dBi and 8.4dBi in the impedance bandwidth. Fig. 5 shows the E-plane and h-plane radiation patterns of port 1 for the antenna example at 3.34 GHz. Fig. 6 shows the E-plane and h-plane radiation patterns of port 1 for the antenna example at 3.69 GHz. It can be observed that the radiation pattern has good symmetry and stability. The front-to-back ratio of the antenna radiation pattern is greater than 32dB. Whereas the main planned polarization field is 40dB stronger than the corresponding cross-polarization field strength. Finally, the half-power beamwidths for the rectangular radiating dielectric antenna examples are listed in Table II.
Table II 3dB beamwidth of rectangular radiating medium dual polarized electromagnetic dipole antenna at different frequencies
According to the results, the high-gain wide-band electromagnetic dipole dielectric antenna of the embodiment has the characteristics of small volume, high front-to-back ratio, stable in-band gain, relatively high in-band gain and low cross polarization.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (8)
1. A high-gain wide-band electromagnetic dipole dielectric antenna is characterized in that: the metal strip line structure comprises a rectangular radiation medium (1) which is arranged above a metal reflection floor (4) in an overhead mode, wherein the lower surface of the rectangular radiation medium (1) is parallel to the metal reflection floor (4), a pair of collinear metal strip lines (3) parallel to the long sides of the rectangular radiation medium (1) are symmetrically attached to the lower surface of the rectangular radiation medium (1), the inner ends of the metal strip lines (3) are connected with a pair of input ports (6 and 7) through metal probes, and a pair of differential signal input ports are formed by the forward signal input ports (6) and the reverse signal input ports (7).
2. The high gain wide band electromagnetic dipole dielectric antenna of claim 1, wherein: the middle part of the rectangular radiation medium (1) is supported above the center of the metal reflection floor (4) through the support medium (2).
3. A high gain wide band electromagnetic dipole dielectric antenna as defined in claim 1, wherein: the supporting medium (2) is in a cuboid shape, the side surface of the supporting medium is perpendicular to the metal belt wires (3), and a gap is formed between the supporting medium (2) and the metal belt wires (3).
4. The high gain wide band electromagnetic dipole dielectric antenna of claim 1, wherein: the input ports (6, 7) have coaxial outer and inner conductors, the outer conductor being connected to the metal reflective floor (4) and the inner conductor being connected to the inner end of the metal strip line (3).
5. The high gain wide band electromagnetic dipole dielectric antenna of claim 4, wherein: the input ports (6, 7) are SMA interfaces, the input ports (6, 7) penetrate through the round through holes (5) formed in the metal reflecting floor (4) to be fixed, the outer shell part of the input ports is an outer conductor, and the input ports are welded and fixed with the round through holes (5) of the metal reflecting floor (4).
6. The high gain wide band electromagnetic dipole dielectric antenna of claim 5, wherein: the input ports (6, 7) are fixed perpendicular to the metal reflective floor (4).
7. A high gain wide band electromagnetic dipole dielectric antenna as defined in claim 1, wherein: the distance of the lower surface of the rectangular radiating medium (1) from the metal reflective floor (4) is related to the frequency of the antenna.
8. A high gain wide band electromagnetic dipole dielectric antenna as defined in claim 1, wherein: the rectangular radiation medium (1) and the supporting medium (2) are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264515.9A CN113991308B (en) | 2021-10-28 | 2021-10-28 | High-gain wide-band electromagnetic dipole medium antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264515.9A CN113991308B (en) | 2021-10-28 | 2021-10-28 | High-gain wide-band electromagnetic dipole medium antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113991308A CN113991308A (en) | 2022-01-28 |
| CN113991308B true CN113991308B (en) | 2023-06-20 |
Family
ID=79743570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111264515.9A Active CN113991308B (en) | 2021-10-28 | 2021-10-28 | High-gain wide-band electromagnetic dipole medium antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113991308B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546354A (en) * | 2018-12-24 | 2019-03-29 | 南通大学 | A kind of magnetic dipole yagi aerial based on dielectric resonator |
| CN113078458A (en) * | 2021-03-03 | 2021-07-06 | 电子科技大学 | Low-profile low-elevation high-gain electromagnetic dipole antenna for satellite communication |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882004B (en) * | 2012-06-29 | 2016-08-03 | 华为技术有限公司 | A kind of electromagnetic dipole antenna |
| CN106785460A (en) * | 2016-11-25 | 2017-05-31 | 南通大学 | A kind of differential bipolar medium resonator antenna |
| CN109428167A (en) * | 2017-09-05 | 2019-03-05 | 香港中文大学深圳研究院 | A kind of dual polarization diectric antenna and its base-station antenna array |
| US10965032B2 (en) * | 2018-01-08 | 2021-03-30 | City University Of Hong Kong | Dielectric resonator antenna |
| CN110635228B (en) * | 2019-08-27 | 2020-12-08 | 南通大学 | Dual-passband circularly polarized dielectric resonator antenna |
| CN110649366B (en) * | 2019-09-20 | 2021-04-20 | 维沃移动通信有限公司 | Antenna and electronic equipment |
| CN111834739B (en) * | 2020-07-14 | 2022-09-30 | 南通大学 | Four-mode broadband high-gain differential dielectric resonator antenna |
| CN111799549B (en) * | 2020-07-30 | 2021-12-17 | 西安电子科技大学 | Broadband super-surface antenna based on differential dielectric resonator feed |
| CN112271437A (en) * | 2020-10-12 | 2021-01-26 | 汕头大学 | Broadband differential hollow rectangular dielectric resonator antenna based on high-order mode |
-
2021
- 2021-10-28 CN CN202111264515.9A patent/CN113991308B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546354A (en) * | 2018-12-24 | 2019-03-29 | 南通大学 | A kind of magnetic dipole yagi aerial based on dielectric resonator |
| CN113078458A (en) * | 2021-03-03 | 2021-07-06 | 电子科技大学 | Low-profile low-elevation high-gain electromagnetic dipole antenna for satellite communication |
Non-Patent Citations (3)
| Title |
|---|
| Differential-Fed Dual-Polarized Dielectric Patch Antenna With Gain Enhancement Based on Higher Order Modes;Xue-Ying Wang;IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS;全文 * |
| 一种紧凑型宽带磁电偶极子天线;王茜茜;钱祖平;曹文权;晋军;;军事通信技术(第01期);全文 * |
| 低剖宽带磁电偶极子天线的设计;吴思雨;赵建平;徐娟;赵敏;郭瑾昭;;通信技术(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113991308A (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11276931B2 (en) | Antenna device and antenna array | |
| Pan et al. | Wideband omnidirectional circularly polarized dielectric resonator antenna with parasitic strips | |
| Zou et al. | Omnidirectional cylindrical dielectric resonator antenna with dual polarization | |
| CN113964508B (en) | Broadband dual-polarization millimeter wave antenna and wide-angle scanning array thereof | |
| Nahar et al. | Survey of various bandwidth enhancement techniques used for 5G antennas | |
| CN113097716B (en) | Broadband circularly polarized end-fire antenna adopting substrate integrated waveguide technology | |
| Kulkarni | Wideband cpw-fed oval-shaped monopole antenna for wi-fi5 and wi-fi6 applications | |
| Chaudhuri et al. | High inter-port isolation dual circularly polarized slot antenna with split-ring resonator based novel metasurface | |
| Paul et al. | A new microstrip patch antenna for mobile communications and Bluetooth applications | |
| Dhara | A compact dual band dual polarized monopole antenna with enhanced bandwidth for C, X, and Ku band applications | |
| Wang et al. | A wideband circularly polarized filtering antenna based on slot-patch structure | |
| CN113991308B (en) | High-gain wide-band electromagnetic dipole medium antenna | |
| Paulson et al. | A new compact dual‐band dual‐polarized microstrip antenna | |
| CN115911890A (en) | Dual-frequency dual-polarization magnetoelectric dipole antenna array for millimeter wave mobile phone terminal | |
| Wu et al. | Dual-polarized ring-slot 5G millimeter-wave antenna and array based on metal frame for mobile phone applications | |
| CN116404414A (en) | Microwave/millimeter wave double-frequency broadband common-caliber antenna with multiplexing structure | |
| CN113991293B (en) | Square broadband high-gain medium dual-polarized electromagnetic dipole antenna | |
| CN113991292B (en) | Cross-shaped high-gain broadband medium dual-polarized electromagnetic dipole antenna | |
| CN113036438B (en) | Broadband low-profile dielectric resonator antenna for beamforming application | |
| Kumar et al. | Mutual coupling reduction in multiband MIMO antenna using cross-slot fractal multiband EBG in the E-plane | |
| Das et al. | A four-element MIMO antenna for WiFi, WiMAX, WLAN, 4G, and 5G sub-6 GHz applications | |
| CN114243297A (en) | Compact dual-frequency dual-polarized antenna array applied to millimeter wave beam scanning | |
| Paul et al. | A compact very‐high‐permittivity dielectric‐eye resonator antenna for multiband wireless applications | |
| Kulkarni | Design of Decagon Ring Two Port MIMO Antenna for Wireless Fidelity-6 Application in Next Generation Futuristic Wireless Devices | |
| Nandigama et al. | A MIMO PIFA Loaded with CSRR-SRR Quadruplets for WLAN, ISM Band, and S-/C-Band Wireless Applications |
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 |