CN112271437A - Broadband differential hollow rectangular dielectric resonator antenna based on high-order mode - Google Patents
Broadband differential hollow rectangular dielectric resonator antenna based on high-order mode Download PDFInfo
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- CN112271437A CN112271437A CN202011087557.5A CN202011087557A CN112271437A CN 112271437 A CN112271437 A CN 112271437A CN 202011087557 A CN202011087557 A CN 202011087557A CN 112271437 A CN112271437 A CN 112271437A
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- order mode
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- 239000002184 metal Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 description 9
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- 230000009286 beneficial effect 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
- H01Q1/36—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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The embodiment of the invention discloses a high-order mode-based broadband differential hollow rectangular dielectric resonator antenna, which comprises: a dielectric substrate having a ground plane on an upper side thereof; a dielectric resonator element disposed on the ground plane; a conductive feed assembly for exciting the dielectric resonator element to operate in two or more dielectric resonator modes. By adopting the invention, at least two dielectric resonance modes are realized in the dielectric resonance antenna, single-port differential feed is realized, and the broadband dual-port differential feed antenna has the advantage of broadband.
Description
Technical Field
The invention relates to a dielectric resonator antenna, in particular to a broadband differential hollow rectangular dielectric resonator antenna based on a high-order mode.
Background
Currently, differential circuits are widely used in communication systems, and have the capability of harmonic suppression and noise immunity. While differential antennas are receiving increasing attention because they can be integrated directly with differential circuitry. In addition, differential antennas are capable of producing symmetrical and stable radiation patterns.
However, although the research work of the current differential dielectric resonator antenna is more, the impedance bandwidth is relatively limited. Introducing a new resonance mode can broaden its impedance bandwidth. For example, a pair of metal branches is loaded on the dielectric resonator antenna to excite an additional resonance mode, so that the purpose of increasing the bandwidth is achieved. However, this method needs to take into account the radiation uniformity of both modes of the dielectric resonator antenna and the metal stub. Since the fundamental mode (TE111y mode) and the higher order mode (TE113y mode) of the rectangular dielectric resonator antenna both have the same radiation direction, there is no need to consider their radiation uniformity in designing. Accordingly, the present patent proposes a differential dielectric resonator antenna that widens the bandwidth by using higher-order modes.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a broadband differential hollow rectangular dielectric resonator antenna based on a high-order mode. The impedance bandwidth can be widened.
In order to solve the above technical problem, an embodiment of the present invention provides a broadband differential hollow rectangular dielectric resonator antenna based on a high-order mode, including: a dielectric substrate having a ground plane on an upper side thereof;
a dielectric resonator element disposed on the ground plane;
a conductive feed assembly for exciting the dielectric resonator element to operate in two or more dielectric resonator modes.
Wherein the conductive feed assembly excites the dielectric resonator element to operate in a first dielectric resonator mode and a second dielectric resonator mode.
Wherein the first dielectric resonator mode is a TE111y mode, and the second dielectric resonator mode is a TE113y mode.
Wherein the conductive feed assembly comprises a 180 ° hybrid coupler and a pair of metal strips respectively connected between the dielectric resonator element and the 180 ° hybrid coupler.
Wherein the 180 ° hybrid coupler is configured to provide two signals of different phases to the dielectric resonator element.
Wherein the 180 ° hybrid coupler is arranged on the underside of the dielectric substrate.
Wherein the pair of metal strips are arranged on two opposite faces of the dielectric resonator element.
Wherein the dielectric resonator element comprises a rectangular body provided with air pockets.
The lower part of the rectangular main body is provided with four supporting rectangular feet arranged on the medium substrate.
The length, width and height of the rectangular main body are 22mm, the length of the four supporting rectangular feet is 8mm, the width of the four supporting rectangular feet is 4mm, and the height of the four supporting rectangular feet is 8 mm.
The embodiment of the invention has the following beneficial effects: the invention realizes at least two dielectric resonance modes in the dielectric resonance antenna, realizes single-port differential feed and has the advantage of broadband.
Drawings
FIG. 1 is a side view of an embodiment in accordance with the invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a plan view of a 180 ° hybrid coupler on the dielectric substrate of the dielectric resonator antenna of fig. 1;
FIG. 4 is a graph of simulated and measured reflection coefficients (dB) for the dielectric resonator antenna of FIG. 1;
FIG. 5 is a graph showing simulated and measured radiation patterns in the E-plane (x-z) plane and the H-plane (y-z) plane in the dielectric resonator antenna of FIG. 1 at 3.25 GHz;
FIG. 6 is a graph showing simulated and measured radiation patterns in the E-plane (x-z) plane and the H-plane (y-z) plane in the dielectric resonator antenna of FIG. 1 at 4.25 GHz;
fig. 7 is a graph of simulated and measured gain for the dielectric resonator antenna of fig. 1.
Wherein, 100: an antenna; 102: a dielectric resonator element; 104: a dielectric substrate; 106: a ground plane; 108: a 180 ° hybrid coupler; 110: a via hole; 112: a metal tape; 114: air holes; 144: a feed port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to the schematic structural diagrams described in fig. 1 to 3, a dielectric resonator antenna 100 in an embodiment of the present invention is shown. The dielectric resonator antenna 100 is a broadband differential hollow rectangular dielectric resonator antenna based on higher order modes for providing a broadband impedance bandwidth.
The dielectric resonator antenna 100 includes a dielectric substrate 104, a dielectric resonator element 102, a conductive feed assembly including a 180 hybrid coupler 108 and a pair of metal strips 112.
The upper surface of the dielectric substrate 104 has a ground plane 106, the dielectric resonator element 102 is fixedly disposed on the ground plane 106, and the 180 ° hybrid coupler 108 is disposed on the lower surface of the dielectric substrate 104.
In the present embodiment, the dielectric resonator element 102 includes a rectangular body configured as a hollow rectangle in the form of a dielectric resonator element having a large size forming the rectangular body and four small size dielectric resonator elements forming supporting rectangular legs joined together.
The 180 ° hybrid coupler 108 is used to implement single port differential feeding; two metal strips 112 are provided in total, and are respectively disposed on the outer side surfaces of the two opposing support rectangular legs, and are connected to the 180 ° hybrid coupler 108 through the via holes 110, for inputting differential signals to the dielectric resonator element 102.
The interstitial spaces between the four supporting rectangular feet form air pockets 114.
In one example, the dielectric constant ε of the dielectric resonator element 102r6.85, the dielectric constant ε of the dielectric substrate 104rs2.95, and the specific size is shown in figures 1-3.
Fig. 4 shows the simulated reflection coefficient and the measured reflection coefficient of the proposed differential hollow rectangular dielectric resonator antenna. As shown in fig. 4, a reasonable agreement of the measured values with the simulated values was obtained. As expected, the TE111y mode and the TE113y mode of the dielectric resonator antenna 100 are combined to form a broadband differential dielectric resonator antenna having an impedance bandwidth of 44% (3.02-4.73 GHz).
Fig. 5 and 6 show simulated and measured radiation modes of TE111y mode and TE113y mode of the differential hollow rectangular dielectric resonator antenna at two resonant frequencies (3.25GHz and 4.25GHz), respectively. As can be seen from the figure, both resonance modes have the expected transverse radiation modes for the E-plane (x-z) plane and the H-plane (y-z) plane. On each plane, the cross-polarized field is more than 20dB weaker than the main polarized field in the positive zenith direction.
Fig. 7 shows simulated and measured antenna gains for the broadband differential hollow rectangular dielectric resonator antenna. As can be seen, the first and second peak gains are 6.54dBi (3.1GHz) and 6.21dBi (4.3GHz), respectively.
The above embodiments of the present invention provide a wideband differential hollow rectangular dielectric resonator antenna. Advantageously, the wideband differential hollow rectangular dielectric resonator antenna of the present invention can provide a wide bandwidth with an impedance bandwidth of up to 44%, which is a new height compared to the current operation.
While the invention has been described and illustrated in detail herein, those skilled in the art will appreciate that alternative embodiments may be devised for the same purposes. For example, the information carried by the radiation pattern may also be digital or analog in nature. Therefore, it is intended that the claims cover all such alternatives falling within the spirit and scope of the invention.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A broadband differential hollow rectangular dielectric resonator antenna based on higher-order modes is characterized by comprising:
a dielectric substrate having a ground plane on an upper side thereof;
a dielectric resonator element disposed on the ground plane;
a conductive feed assembly for exciting the dielectric resonator element to operate in two or more dielectric resonator modes.
2. The high-order mode-based wideband differential hollow rectangular dielectric resonator antenna according to claim 1, wherein said conductive feed assembly excites said dielectric resonator element to operate in a first dielectric resonator mode and a second dielectric resonator mode.
3. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna according to claim 2, wherein the first dielectric resonator mode is a TE111y mode, and the second dielectric resonator mode is a TE113y mode.
4. The high-order mode-based wideband differential air-core rectangular dielectric resonator antenna of claim 3, wherein said conductive feed assembly comprises a 180 ° hybrid coupler and a pair of metal strips respectively connected between said dielectric resonator element and said 180 ° hybrid coupler.
5. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna according to claim 4, wherein said 180 ° hybrid coupler is configured to provide two signals with different phases to said dielectric resonator element.
6. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna according to claim 5, wherein said 180 ° hybrid coupler is disposed on the lower side of said dielectric substrate.
7. The high-order mode-based wideband differential hollow rectangular dielectric resonator antenna according to claim 5, wherein said pair of metal strips are disposed on two opposite sides of said dielectric resonator element.
8. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna according to any of claims 1 to 7, wherein said dielectric resonator element comprises a rectangular body provided with air pockets.
9. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna according to claim 8, wherein the rectangular main body lower portion has four supporting rectangular legs disposed on the dielectric substrate.
10. The high-order mode-based broadband differential hollow rectangular dielectric resonator antenna is characterized in that the length, the width and the height of the rectangular main body are 22mm, and the length, the width and the height of the four supporting rectangular legs are 8mm, 4mm and 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011087557.5A CN112271437A (en) | 2020-10-12 | 2020-10-12 | Broadband differential hollow rectangular dielectric resonator antenna based on high-order mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011087557.5A CN112271437A (en) | 2020-10-12 | 2020-10-12 | Broadband differential hollow rectangular dielectric resonator antenna based on high-order mode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690606A (en) * | 2021-09-02 | 2021-11-23 | 南通大学 | Frequency-reconfigurable broadband enhanced dielectric patch antenna |
| CN113991308A (en) * | 2021-10-28 | 2022-01-28 | 中天通信技术有限公司 | High-gain broadband electromagnetic dipole dielectric antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269650A (en) * | 2014-09-17 | 2015-01-07 | 电子科技大学 | High-gain rectangular dielectric resonator antenna working in high-order mode |
| CN110323526A (en) * | 2019-06-20 | 2019-10-11 | 南通大学 | SIW Fed Dielectric Resonator device and antenna, the power splitter for using the resonator |
| CN110635228A (en) * | 2019-08-27 | 2019-12-31 | 南通大学 | Dual-passband circularly polarized dielectric resonator antenna |
| CN110729569A (en) * | 2019-10-25 | 2020-01-24 | 南通大学 | High-gain yagi antenna based on high-order mode and metamaterial of dielectric resonator |
| CN110854521A (en) * | 2019-11-27 | 2020-02-28 | 南通大学 | Annular dielectric resonator broadband quasi-yagi antenna based on metal ring loading |
-
2020
- 2020-10-12 CN CN202011087557.5A patent/CN112271437A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269650A (en) * | 2014-09-17 | 2015-01-07 | 电子科技大学 | High-gain rectangular dielectric resonator antenna working in high-order mode |
| CN110323526A (en) * | 2019-06-20 | 2019-10-11 | 南通大学 | SIW Fed Dielectric Resonator device and antenna, the power splitter for using the resonator |
| CN110635228A (en) * | 2019-08-27 | 2019-12-31 | 南通大学 | Dual-passband circularly polarized dielectric resonator antenna |
| CN110729569A (en) * | 2019-10-25 | 2020-01-24 | 南通大学 | High-gain yagi antenna based on high-order mode and metamaterial of dielectric resonator |
| CN110854521A (en) * | 2019-11-27 | 2020-02-28 | 南通大学 | Annular dielectric resonator broadband quasi-yagi antenna based on metal ring loading |
Non-Patent Citations (1)
| Title |
|---|
| XIAO SHENG FANG; KANG PING SHI: "《Design of the Single-/Dual-Port Wideband Differential Dielectric Resonator Antenna Using Higher Order Mode》", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS ( VOLUME: 19, ISSUE: 9, SEPTEMBER 2020)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690606A (en) * | 2021-09-02 | 2021-11-23 | 南通大学 | Frequency-reconfigurable broadband enhanced dielectric patch antenna |
| CN113991308A (en) * | 2021-10-28 | 2022-01-28 | 中天通信技术有限公司 | High-gain broadband electromagnetic dipole dielectric antenna |
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Application publication date: 20210126 |