CN210379414U - Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna - Google Patents
Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna Download PDFInfo
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- CN210379414U CN210379414U CN201921629270.3U CN201921629270U CN210379414U CN 210379414 U CN210379414 U CN 210379414U CN 201921629270 U CN201921629270 U CN 201921629270U CN 210379414 U CN210379414 U CN 210379414U
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Abstract
The utility model discloses a conformal dielectric resonator antenna of miniaturized oblique wave beam ultra wide band, include: the metal reflection plate, the dielectric resonator, the dielectric substrate, the floor, the feeder line, the coupling gap. Based on the mirror image principle, the volume of the dielectric resonator antenna is reduced to half by adopting an electric wall loading mode, and a multifunctional metal loading structure is obtained by further utilizing the scattering characteristic of the electric wall, so that the miniaturization characteristic is obtained; based on the radiation superposition and cancellation principle of the complementary antenna, the vertical electric monopole and the horizontal magnetic dipole which are simultaneously excited are adopted to obtain the oblique beam radiation characteristic, and the oblique beam radiation characteristic has controllable radiation zero points and poles; the broadband characteristic is obtained by adopting a composite structure of a monopole antenna, a dielectric resonator antenna and a slot antenna and utilizing the principle of multi-resonance mode fusion, and the oblique beam characteristic is kept unchanged; the ultra-wideband characteristic is obtained by utilizing the three-resonance mode of the dielectric resonator antenna and the single-resonance mode of the slot antenna.
Description
Technical Field
The utility model relates to a conformal antenna technical field, in particular to miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna.
Background
With the rapid development of wireless communication technology, wireless communication devices are becoming portable, and various electronic devices are being developed, which also makes the antenna design to be conformal.
So far, conformal antennas in the industry are mostly based on the metal patch microstrip antenna theory, and such antennas employ flexible substrates as: 1. organic flexible media such as polyimide, polyethylene terephthalate, polylactic acid, photographic paper, and the like; 2. and the fabric is woven by felts, woven fabrics and the like. The metal patch adopts flexible copper foil, conductive solution, ink, fabric and the like. Wearable hardware equipment of a large amount of intelligence has appeared on the current market, for example motion bracelet, intelligent wrist-watch etc. except possessing traditional wrist-watch, functions such as compass still have the conversation, and short distance information is mutual, functions such as location navigation. The demand for such wireless communication devices is also increasing, and the wireless communication devices are being developed toward conformality, miniaturization, and the like in order to meet the requirements of portability, flexibility, beauty, and the like.
Conventional dielectric resonator antennas are applied to flat, planar floors. So far, most of conformal antennas in the industry are based on microstrip antennas, dielectric resonator antennas are not actually applied to conformal devices, and compared with microstrip antennas, dielectric resonator antennas have many advantages of wide bandwidth, high polarization purity, high design freedom, multiple radiation modes and the like, and can further meet the requirements of conformal systems on antennas.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect provides a conformal dielectric resonator antenna of miniaturized oblique wave beam ultra wide band, can the effectual problem that exists of the above-mentioned prior art of solution.
In order to realize the purpose of the utility model, the utility model discloses the technical scheme who takes as follows:
a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna, comprising: the device comprises a metal reflecting plate (1), a dielectric resonator (2), a dielectric substrate (3), a floor (4), a feeder line (5) and a coupling gap (6);
the dielectric resonator (2) and the dielectric substrate (3) are both arc-shaped plate-shaped. The area of the upper surface of the dielectric resonator (2) is smaller than that of the upper surface of the dielectric substrate (3).
The lower surface of the dielectric resonator (2) is conformal with the upper surface of the dielectric substrate (3), the dielectric resonator (2) is fixed in the center of the upper surface of the dielectric substrate (3) through epoxy resin glue, the upper surface of the dielectric substrate (3) is attached to and covers the floor (4), and the floor (4) is made of copper foil;
the metal reflecting plate (1) is an arc-shaped iron plate, the inner arc of the metal reflecting plate (1) is conformal to the floor (4) and is vertically fixed on one side of the dielectric resonator (2), and the metal reflecting plate (1) is attached to the dielectric resonator and fixed by epoxy resin glue;
covering a feeder (5) on the lower surface of the dielectric substrate (3), wherein the feeder (5) takes one side of the edge of the floor as a starting end and the other side as a free end, and the feeder is symmetrical about a yoz plane; etching a rectangular coupling gap (6) at a position of 2.6mm away from one side of the axis of the floor (4) close to the free end of the feeder, wherein the coupling gap (6) is spatially orthogonal to the feeder (5);
the antenna is fed by a feeder (5), and electromagnetic wave energy is coupled and conducted to the dielectric resonator (2) on the upper surface through a coupling slot (6) on the floor (4).
Further, the length of an inner arc of the metal reflecting plate (1) is 17mm, the length of an outer arc is 29.6mm, the thickness is 0.2mm, the height is 12mm, and the radian is 1.05 rad;
the dielectric resonator (2) has a relative dielectric constant of 9.9, an inner arc length of 17mm, an outer arc length of 21.2mm, a straight edge length of 10mm at the bottom, a height of 4mm and a radian of 1.05 rad;
the medium substrate (3) is made of FR4 material, has a relative dielectric constant of 4.4, an inner diameter of 16.6mm, a straight edge at the bottom of 30mm in length, a height of 0.4mm and a radian of 2.1rad,
furthermore, the feeder line (5) is a copper microstrip line, the length of the long side is 21.8mm, the arc length of the wide side is 0.9mm, the length of the wide side of the coupling slot (6) is 0.8mm, and the arc length of the long side is 7.3 mm.
Further, the utility model discloses an antenna adopts the slot coupling feed, and coupling slot symmetry axis is 2.6mm with feeder free end edge distance.
Compared with the prior art, the utility model has the advantages of:
1. by adopting the form of the conformal antenna, the applicable scene of the antenna is expanded, so that the antenna can be used for a curved surface;
2. the volume of the antenna is reduced to half by using electric wall loading;
3. obtaining the ultra-wideband characteristic by utilizing the fusion of multiple resonance modes and the composition of multiple radiation structures;
4. obtaining the controllable oblique beam characteristics of the zero point and the pole by utilizing a directional diagram superposition principle;
5. by utilizing the hybrid antenna structure, the broadband oblique beam characteristic is obtained, so that an oblique beam directional diagram is kept stable in a wider working bandwidth;
6. the antenna design theory is clear, and the working principle is clear that the antenna is based on the patch antenna design, and compared with the traditional conformal antenna, the antenna has wider bandwidth and more controllable wave beams.
Drawings
Fig. 1 is a front view of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention;
fig. 2 is a top view of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention;
fig. 3 is a left side view of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention;
FIG. 4 is a bottom view of a dielectric substrate according to an embodiment of the present invention;
fig. 5 is a diagram of an electric field distribution in a dielectric resonator in a first operating mode of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention;
fig. 6 is a diagram of a current distribution on a surface of a metal reflector plate in a first and a second operating mode of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention;
fig. 7 is a distribution diagram of currents around a radiation gap of the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to the embodiment of the present invention in the second operating mode;
fig. 8 is a graph of the S-parameter of a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna in the operating frequency band according to an embodiment of the present invention;
fig. 9 is a comparison graph of main polarization and cross polarization when the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna of the embodiment of the present invention operates at 6.4GHz and an azimuth angle of 0deg in the first operating mode;
fig. 10 is a comparison graph of main polarization and cross polarization for a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to an embodiment of the present invention operating in the first operating mode at 6.4GHz and an azimuth angle of 90 deg;
fig. 11 is a comparison graph of main polarization and cross polarization when the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna of the embodiment of the present invention operates in the second operating mode at 7.8GHz and an azimuth of 0 deg;
fig. 12 is a comparison graph of main polarization and cross polarization when the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna of the present invention operates at 7.8GHz and an azimuth angle of 90deg in the second operating mode.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna comprises: the device comprises a metal reflecting plate (1), a ceramic dielectric block (2), a dielectric substrate (3), a floor (4), a feeder line (5) and a coupling gap (6);
the dielectric resonator (2) is conformal with the dielectric substrate (3) and fixed in the center of the dielectric substrate (3), the upper surface of the dielectric substrate (3) is covered with the floor (4) in a fitting manner, and the floor (4) is made of copper foil;
the metal reflecting plate (1) is made of iron, the metal reflecting plate (1) is conformal with the floor (4) and is fixed in the middle of the floor (4), and the side surface of the metal reflecting plate (1) is fixedly attached to the dielectric resonator through epoxy resin glue;
as shown in fig. 4, the lower surface of the dielectric substrate (3) is covered with the feeder (5), the feeder (5) takes one side of the edge of the floor as a starting end, and the other side as a free end, and the feeder is symmetrical about the yoz plane; etching a rectangular coupling gap (6) at a position of 2.6mm away from one side of the axis of the floor (4) close to the free end of the feeder;
the antenna is fed by a feeder (5), and electromagnetic wave energy is coupled and conducted to the upper surface dielectric resonator (2) through a coupling slot (6) on the floor (4).
The utility model discloses a miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna is based on the mirror image principle, adopts the form of electricity wall loading for the volume of dielectric resonator antenna reduces to half to further utilize the scattering characteristic of electricity wall, obtain multi-functional metal loading structure; based on the radiation superposition and cancellation principle of the complementary antenna, the vertical electric monopole and the horizontal magnetic dipole which are simultaneously excited are adopted to obtain the oblique beam radiation characteristic, and the oblique beam radiation characteristic has controllable radiation zero points and poles; the broadband characteristic is obtained by adopting a composite structure of a monopole antenna, a dielectric resonator antenna and a slot antenna and utilizing the principle of multi-resonance mode fusion, and the oblique beam characteristic is kept unchanged; the ultra-wideband characteristic is obtained by utilizing the three-resonance mode of the dielectric resonator antenna and the single-resonance mode of the slot antenna.
As shown in fig. 5, in the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna, when in the working mode, the electric field in the dielectric resonator is distributed parallel to the y-axis, and the field distribution can be regarded as the field distribution of a horizontal magnetic dipole;
as shown in fig. 6, the current distribution on the upper surface of the metal reflector plate can be regarded as the current distribution of the excited vertical electric monopole;
as shown in fig. 7, the current around the radiation slot of the miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna in the second operation mode is distributed as shown in the figure;
as shown in fig. 8, the S parameter of the antenna port of the miniaturized oblique-beam ultra-wideband conformal dielectric resonator is less than-10 dB, and the bandwidth reaches 62%, so that the antenna is an ultra-wideband antenna.
Fig. 9 and fig. 10 are the utility model discloses a miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna work is the main polarization and the cross polarization directional diagram contrast map of 0deg and 90deg respectively for the azimuth under 6.4GHz under first mode, can see that this miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna has the characteristics of oblique pattern, wide wave beam.
Fig. 11 and 12 are the utility model discloses a 7.8GHz prescription position angle is 0deg and 90 deg's main polarization and cross polarization directional diagram contrast diagram respectively under the second mode of operation of miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna work, can see that this miniaturized oblique wave beam ultra wide band conformal dielectric resonator antenna has the characteristics of oblique pattern, wide wave beam.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (4)
1. A miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna, comprising: the device comprises a metal reflecting plate (1), a dielectric resonator (2), a dielectric substrate (3), a floor (4), a feeder line (5) and a coupling gap (6);
the dielectric resonator (2) and the dielectric substrate (3) are both arc-shaped plate-shaped; the area of the upper surface of the dielectric resonator (2) is smaller than that of the upper surface of the dielectric substrate (3);
the lower surface of the dielectric resonator (2) is conformal with the upper surface of the dielectric substrate (3), the dielectric resonator (2) is fixed in the center of the upper surface of the dielectric substrate (3) through epoxy resin glue, the upper surface of the dielectric substrate (3) is attached to and covers the floor (4), and the floor (4) is made of copper foil;
the metal reflecting plate (1) is an arc-shaped iron plate, the inner arc of the metal reflecting plate (1) is conformal to the floor (4) and is vertically fixed on one side of the dielectric resonator (2), and the metal reflecting plate (1) is attached to the dielectric resonator and fixed by epoxy resin glue;
covering a feeder (5) on the lower surface of the dielectric substrate (3), wherein the feeder (5) takes one side of the edge of the floor as a starting end and the other side as a free end, and the feeder is symmetrical about a yoz plane; etching a rectangular coupling gap (6) at a position of 2.6mm away from one side of the axis of the floor (4) close to the free end of the feeder, wherein the coupling gap (6) is spatially orthogonal to the feeder (5);
the antenna is fed by a feeder (5), and electromagnetic wave energy is coupled and conducted to the dielectric resonator (2) on the upper surface through a coupling slot (6) on the floor (4).
2. The miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna of claim 1, wherein: the length of an inner arc of the metal reflecting plate (1) is 17mm, the length of an outer arc is 29.6mm, the thickness is 0.2mm, the height is 12mm, and the radian is 1.05 rad;
the dielectric resonator (2) has a relative dielectric constant of 9.9, an inner arc length of 17mm, an outer arc length of 21.2mm, a straight edge length of 10mm at the bottom, a height of 4mm and a radian of 1.05 rad;
the medium substrate (3) is made of FR4 material, has a relative dielectric constant of 4.4, an inner diameter of 16.6mm, a straight edge length of 30mm at the bottom, a height of 0.4mm and a radian of 2.1 rad.
3. The miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna of claim 2, wherein: the feeder line (5) is a copper microstrip line, the length of the long side is 21.8mm, the arc length of the wide side is 0.9mm, the length of the wide side of the coupling slot (6) is 0.8mm, and the arc length of the long side is 7.3 mm.
4. The miniaturized oblique-beam ultra-wideband conformal dielectric resonator antenna according to claim 3, wherein: the antenna adopts slot coupling feed, and the distance between the symmetry axis of the coupling slot (6) and the edge of the free end of the feeder line (5) is 2.6 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921629270.3U CN210379414U (en) | 2019-09-27 | 2019-09-27 | Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna |
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| CN201921629270.3U CN210379414U (en) | 2019-09-27 | 2019-09-27 | Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571515A (en) * | 2019-09-27 | 2019-12-13 | 成都北斗天线工程技术有限公司 | Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna |
| CN113328256A (en) * | 2021-05-24 | 2021-08-31 | 电子科技大学 | End-fire dielectric resonator antenna |
-
2019
- 2019-09-27 CN CN201921629270.3U patent/CN210379414U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571515A (en) * | 2019-09-27 | 2019-12-13 | 成都北斗天线工程技术有限公司 | Miniaturized oblique wave beam ultra-wideband conformal dielectric resonator antenna |
| CN113328256A (en) * | 2021-05-24 | 2021-08-31 | 电子科技大学 | End-fire dielectric resonator antenna |
| CN113328256B (en) * | 2021-05-24 | 2022-10-14 | 电子科技大学 | End-fire dielectric resonator antenna |
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