CN210156545U - Broadband circularly polarized dipole patch antenna with water helix - Google Patents
Broadband circularly polarized dipole patch antenna with water helix Download PDFInfo
- Publication number
- CN210156545U CN210156545U CN201920958936.3U CN201920958936U CN210156545U CN 210156545 U CN210156545 U CN 210156545U CN 201920958936 U CN201920958936 U CN 201920958936U CN 210156545 U CN210156545 U CN 210156545U
- Authority
- CN
- China
- Prior art keywords
- water
- dielectric substrate
- antenna
- patch
- 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
Abstract
The utility model discloses a broadband circular polarization dipole patch antenna with water spiral, which comprises an antenna body, wherein the antenna body comprises a dielectric substrate (1), the dielectric substrate (1) is provided with a first surface and a second surface which are parallel, a plurality of patch patterns are covered on the first surface to form a dipole radiator (4) and a water spiral groove (6), and the water spiral groove (6) is filled with seawater to form a waveguide; the second surface is covered with a metal grounding plate (2); a coaxial line (3) penetrates through the dielectric substrate (1) from bottom to top and is used for feeding the patch antenna, the signal end of the coaxial line is connected with the dipole radiator (4), and the grounding end of the coaxial line is connected with the metal grounding plate (2); a through hole (5) is also formed in the dielectric substrate (1). The utility model discloses adopt the shape to curl for two-way Archimedes spiral at dipole radiator periphery, the cross section is the water helicla flute of rectangle, makes this antenna end effect almost eliminated, fine increase the bandwidth.
Description
Technical Field
The utility model relates to an antenna technology field, concretely relates to broadband circular polarization dipole patch antenna of electrified water spiral.
Background
Since the antenna of the hertzian and marchony utility model, the importance of the antenna in the social life has been increasing, and nowadays it is indispensable, and the microstrip antenna has also been widely used in a large number of radio devices over a wide frequency domain of about 100MHz to 100 GHz. Compared with the conventional microwave antenna, the microstrip antenna has more physical parameters, can have any geometric shape and size, has small volume, light weight, low profile and high quality factor, can be conformal with a carrier (such as an aircraft), has diversified performances, and is convenient for integration and mass production. Microstrip antennas, however, also have some non-negligible drawbacks, such as: the microstrip antenna has the advantages of narrow relative bandwidth, large loss, small power capacity and the like.
Although the microstrip antenna has such disadvantages, the microstrip antenna can also operate in a wide frequency band through a reasonable structural design. The non-frequency dependent antenna is a typical broadband antenna. According to the lamb-plug principle, if the shape of the antenna is determined only by the angle, the antenna has non-frequency-varying impedance and lobe pattern characteristics, and the archimedean spiral just meets the requirement, and if a helix formed by combining the archimedean spiral lines is combined with a microstrip antenna, the microstrip antenna is believed to be well widened in bandwidth. In addition, since the water helix has the characteristics of a helical antenna and the characteristics of a leaky waveguide, seawater is cheap, has a high dielectric constant, a high conductivity, and a large attenuation constant, and is becoming a popular research topic for researchers. The spiral water waveguide is used, a higher-order mode can be excited under the condition that the size reaches a certain value, and the terminal current of the antenna can be absorbed as much as possible under the condition that circular polarization is not destroyed, so that the impedance bandwidth is well increased.
SUMMERY OF THE UTILITY MODEL
The defect to prior art exists, the utility model aims to provide a broadband circular polarization dipole patch antenna of electrified water spiral can not only realize high broadband, high radiation power, high gain, and the size is little moreover, the cost is low, simple structure and easy with other equipment integration or make the array, be satellite communication's ideal selection.
In order to solve the technical problem existing in the prior art, the technical scheme of the utility model as follows:
the broadband circularly polarized dipole patch antenna with the water helix comprises an antenna body, wherein the antenna body comprises a dielectric substrate (1), the dielectric substrate (1) is provided with a first surface and a second surface which are parallel to each other, a plurality of patch patterns are covered on the first surface to form a dipole radiator (4) and a water helical groove (6), and the water helical groove (6) is filled with seawater to form a waveguide;
the second surface is covered with a metal grounding plate (2);
a coaxial line (3) penetrates through the dielectric substrate (1) from bottom to top and is used for feeding the patch antenna, the signal end of the coaxial line is connected with the dipole radiator (4), and the grounding end of the coaxial line is connected with the metal grounding plate (2);
a through hole (5) is further formed in the dielectric substrate (1), and the through hole (5) penetrates through the dielectric substrate (1) from the second surface to the first surface, but does not penetrate through the metal grounding plate (2) and the dipole radiator (4).
As a further improvement scheme, the dielectric substrate (1) is square, and the length and the width of the dielectric substrate are equal; the metal grounding plate (2) is also square, and the length and the width of the metal grounding plate are equal to those of the dielectric substrate (1).
As a further improvement scheme, the coaxial line (3) is positioned at about 1mm beside the center of the dielectric substrate (1) and penetrates through the substrate from the lower part of 5mm of the substrate to feed the patch antenna.
As a further improvement scheme, a plurality of patch patterns are covered on the first surface of the dielectric substrate (1), and the patch patterns are metal sheets; there is a slight spacing between adjacent patch patterns, which are symmetrical about an origin.
As a further improvement, four groups of through holes (5) are arranged in the dielectric substrate (1), each group has three through holes, and the four groups of through holes (5) are symmetrical about a z-axis.
As a further improvement, the water spiral groove (6) is embedded in the dielectric substrate (1) and is about 0.5cm away from the periphery of the dipole radiator (4), the cross section of the water spiral groove is rectangular, and the horizontal plane is an Archimedes spiral.
As a further improvement scheme, the patch patterns are formed by combining a plurality of square and triangular patches, and at least patch patterns R0, R1-1, R2-1, R3-1, T1-1, R1-2, R2-2, R3-2 and T1-2 are arranged, wherein R represents the rectangle, and T represents the triangle; a gap of 0.1-0.3 mm is formed between adjacent patch patterns, so that the electric size of the dipole radiator (4) is long enough.
As a further improvement scheme, the water spiral groove (6) is a bidirectional water spiral groove and is formed by reversely extending and combining two Archimedes water spiral grooves, and each water spiral consists of two Archimedes spiral lines with different phases; the upper surface of the water spiral groove (6) and the dipole patch pattern are in the same plane.
In the selected embodiment of the present invention, the dielectric substrate (1) is a square dielectric plate with a length of about 60mm and a height of 1.575mm, the length and the width of the dielectric substrate are equal, the second surface of the dielectric substrate is covered with a square metal grounding plate (2), and the length and the width of the dielectric substrate are equal to those of the dielectric substrate (1).
In selected embodiments of the present invention, the present antenna uses coaxial line (3) for center feed, and translates the feed point along the Y-axis by about 1mm for impedance matching of the antenna and the feed line. In order to facilitate the connection between the antenna object and the coaxial line (3), the coaxial line interface extends 5mm below the dielectric substrate (1), and the excited lower surface is covered by a thin metal block and can be connected with an SMA joint.
The utility model discloses in the optional embodiment, this antenna has dug about 1.3mm of interval on dielectric substrate (1), about 1.2mm wide, and high about 0.5 mm's two-way water helicla flute (6), and the inside is filled with the sea water, and the upper surface and dipole radiator (4) of this water helicla flute are in same plane. The bidirectional water spiral groove (6) is formed by reversely extending and combining two Archimedes water spiral grooves, and each water spiral consists of two Archimedes spiral lines with different phases.
In selected embodiments of the invention, the four Archimedes' spiral constituting the two water spiral flutes (6) are each a function of
Wherein R islAnd Ld is the distance between the two water spiral grooves and the origin, Ws is the width of the water spiral groove, omega is the offset angle of the water spiral, and c is the translation amount of the whole water spiral groove relative to the origin.
In selected embodiments of the present invention, for the water spiral groove (6), the phase difference between their inner and outer logarithmic spirals is the same, and the water spiral groove (6) is aligned with eight end points of the patch, i.e. point a, point B, point C, point D, point E, point F, point G, all the time on the same straight line, and the included angle with the Y-axis is phi.
In selected embodiments of the present invention, the dipole radiator (4) is a metal sheet, and the antenna dielectric substrate has 4 sets of three through holes (5) therein, each set being symmetrical about the origin, the through holes leading from the metal ground plate (2) to the dipole radiator (4) and having a height equal to the thickness of the dielectric substrate (1).
Compared with the prior art, the utility model discloses following technological effect has:
1. the utility model discloses a load water spiral and dipole periphery on dipole patch antenna gets the basis, absorb terminal current, under the condition that does not increase antenna size by a wide margin for the impedance bandwidth of antenna has increased tens of times, and radiant power also increases to some extent. When the resonant frequency is 21GHz, the impedance bandwidth of the antenna is about 70%, the maximum gain reaches 10dB, the radiation power is higher than 0.1dB, and the maximum radiation efficiency is 0.126 dB. The utility model discloses can not only realize the high broadband, high radiation power, high gain, the size is little moreover, the cost is low, simple structure and easy and other equipment integration or make the array.
2. The utility model discloses in, dipole radiator (4) on the antenna is formed by a plurality of rectangle pasters and triangle-shaped paster combination, has all separated 0.1 ~ 0.3mm between every paster, and this gap makes produced the coupling between paster and paster, has changed the electric size for the electric size increases still will be big than the physical dimension, and has also increased the bandwidth when handling like this.
3. The electrical dimension angle of the dipole radiator is nearly 120 degrees with the X axis, and the connecting lines of the starting position and the tail end position of the water spiral groove (6) and the origin point are nearly 120 degrees with the X axis, namely the point A, B, C, D, E, F, G, H shown in figure 1 is always kept on the same line and has an included angle of about 120 degrees with the X axis, and because the terminal current of the dipole radiator (4) is kept on the same line, the terminal current is propagated into the water spiral groove (6) as far as possible, so that the return loss is reduced as far as possible.
4. The utility model discloses used the sea water as the filling material of water spiral, the cost is very low, but through the very big bandwidth that has influenced the antenna of its helical structure to this antenna length width only has 5cm, so make easily, the cost is also very low, makes into array antenna with other equipment integrations very easily. Furthermore, the utility model discloses under the prerequisite that does not increase cost of manufacture and technology complexity, increased the bandwidth, compare in dipole patch antenna in the past, the gain also slightly promotes.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic structural diagram of a wideband circularly polarized dipole patch antenna with a water helix according to an embodiment of the present invention, which is an oblique view 1-a, a top view 1-b, and a side view 1-c from top to bottom.
Fig. 2 is a return loss (S11) performance diagram according to an embodiment of the present invention. Where the abscissa represents frequency (ghz) and the ordinate represents return loss intensity (dB).
Fig. 3 is a radiation pattern (dB) of an embodiment of the present invention.
Fig. 4 is a gain-frequency diagram of an embodiment of the present invention, wherein the abscissa represents frequency (ghz) and the ordinate represents gain (dB) in the maximum radiation direction.
Fig. 5 is a Z parameter image according to an embodiment of the present invention, wherein the abscissa is frequency (ghz).
Fig. 6 is a radiation power image according to an embodiment of the present invention, wherein the abscissa is frequency (ghz) and the ordinate is radiation power (dBW).
Fig. 7 is a radiation efficiency image according to an embodiment of the present invention, wherein the abscissa is frequency (ghz) and the ordinate is radiation efficiency (dB).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the accompanying drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", "third", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be a mechanical connection or an electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following will explain in detail embodiments of the present invention.
Referring to fig. 1, a schematic structural diagram of a broadband circularly polarized dipole patch antenna with a water helix is shown, which includes an antenna body. The antenna body mainly comprises a dielectric substrate 1, the dielectric substrate 1 is a square dielectric plate with the length of about 60mm and the height of 1.575mm, the dielectric substrate 1 is provided with a first surface and a second surface which are parallel, the second surface is covered with a grounding plate 2 with the length and the width equal to those of the dielectric substrate, a coaxial line 3 is positioned about 1mm beside the center of the dielectric plate and penetrates through the substrate from the bottom 5mm to the top to feed the patch antenna; the first surface of the dielectric substrate is covered with a plurality of patches, a tiny interval is arranged between every two adjacent patches, the patches are symmetrical relative to an original point, and a dipole radiator 4 is formed; four groups of through holes 5 penetrate through the dielectric substrate 1 from the second surface to the first surface but do not penetrate through the grounding plate 2 and the dipole radiator 4, each group is provided with three through holes, and the four groups of through holes are symmetrical about a z axis; in the embodiment, the distance between the water spiral grooves is about 1.3mm, the width is about 1.2mm, the height is about 0.5mm, and the grooves are filled with seawater to form leaky waveguides and used for absorbing echoes and reducing loss.
To impedance match the antenna to the feed, the feed point is shifted by about 1mm along the Y-axis. In order to facilitate the connection between the antenna and the coaxial line, the coaxial line interface is extended to 5mm below the dielectric substrate, and the excited lower surface is covered with a thin metal block which can be connected with an SMA joint.
In a preferred embodiment, the water spiral groove (6) is a bidirectional water spiral groove and is formed by reversely extending and combining two Archimedes water spiral grooves, and each water spiral consists of two Archimedes spiral lines with different phases; the upper surface of the water spiral groove (6) and the dipole patch pattern are in the same plane. Further, four Archimedes' spiral constituting the two water spiral grooves (6) has a function formula of
Wherein R islAnd Ld is the distance between the two water spiral grooves and the origin, Ws is the width of the water spiral groove, omega is the offset angle of the water spiral, and c is the translation amount of the whole water spiral groove relative to the origin.
Preferably, the phase difference between the inner and outer Archimedes spiral in the water spiral groove (6) is the same, and the water spiral groove and eight points of the dipole radiator which are positioned on the first surface of the dielectric substrate (1), namely a point A, a point B, a point C, a point D, a point E, a point F and a point G in the figure 1 are always on the same straight line and form an included angle phi with the Y axis.
The connecting line of the starting point and the origin of the water spiral groove, namely the straight line BD and the x axis, is 120 degrees, the point A, the point B, the point C, the point D, the point E, the point F and the point G are always on the same straight line, namely the included angle between the equivalent electric size of the dipole patch group and the Y axis is also kept about 120 degrees, so that the terminal current generated by the patch group can flow to the water tank through the point B and the point F of the water spiral groove as much as possible. The dielectric substrate 1 adopts Rogers-5880 series, the metal grounding plate and the dipole radiator are metal sheets, the inner diameter of the coaxial line is 0.65mm, and 4 groups of through holes are hollow cylinders.
Adopt above-mentioned technical scheme, the utility model discloses an it is peripheral with the dipole that loading water spiral and dipole are gone up on the basis at dipole patch antenna, absorb terminal current, under the condition that does not increase antenna size by a wide margin for the impedance bandwidth of antenna has increased tens times, and radiant power also increases to some extent. The principle of the specific technology is as follows:
the bidirectional water spiral groove 6 is formed by reversely extending and combining two Archimedes water spiral grooves, four Archimedes spiral lines forming the two water spiral grooves (6) are respectively provided with a functional formula
Wherein R islAnd Ld is the distance between the two water spiral grooves and the origin, Ws is the width of the water spiral groove, omega is the offset angle of the water spiral, and c is the translation amount of the whole water spiral groove relative to the origin.
Unlike a conventional spiral antenna with a metal strip as an arm, seawater has a dielectric constant as high as 81 and a conductivity of 4. In addition, electromagnetic waves in a frequency band of up to 10GHz and higher attenuate very rapidly when being conducted in seawater, and hardly propagate as it is. The characteristics of the three points ensure that the electromagnetic wave in the seawater can not be transmitted out and can also absorb the electromagnetic wave transmitted nearby.
Dielectric waveguides with rectangular cross-section can support multiple mixed modes, the cut-off wavelength λ in rectangular waveguidesC2a, wherein a is the width of the waveguide, when the wavelength λ corresponding to the electromagnetic wave radiated by us is less than or equal to 2a, a fundamental mode is excited in the waveguide, and the electromagnetic wave can be normally propagated; when the wavelength is greater than 2a, a higher-order mode exists in the waveguide, and when the wavelength is greater than 2a, only the higher-order mode exists in the waveguide, which is called a withering mode or a disappearance mode, and in the mode, the mode is equivalent to a vortex in a fluid and is a non-propagation mode, but is not due to the loss of seawaterThe terminal current through the dipole radiator is almost completely consumed in the water helix due to the high intensity, almost no reflected current exists, and the return loss can be very small in a large frequency band.
Experiments show that when the antenna is not loaded with the water spiral groove outside the dipole radiator, the bandwidth of the antenna is only 7%, and when the water spiral groove is added, the frequency band of the antenna is within 8 GHz-38 GHz, and the return loss is smaller than-10 dB. The antenna is considered to have 70% of impedance bandwidth due to the very low radiation power exceeding 13.3-28 GHz.
Referring to fig. 2, a return loss (S11) performance diagram of an embodiment of the present invention is shown. Wherein the abscissa represents frequency (GHz), and the ordinate represents return loss strength (dB), as can be seen from fig. 2, the utility model discloses owing to added the water helicla flute, the data of S11 all is in below-10 dB in a very long section frequency, in fact, in the frequency range that does not give of fig. 2, from 8GHz to 38GHz, the S11 parameter all is in below-10 dB, but because to the frequency range that does not give of fig. 2, the radiation power and the gain of antenna all are less than 0dB, so do not include in the result. The resulting relative impedance bandwidth is 70%.
Referring to fig. 3, it can be seen from fig. 3 that the radiation gain reaches a maximum of 10.0534dB at phi 75 ° and theta 22 °, which is greatly related to the fact that the angle between the water spiral groove and the dipole patch set is 30 ° and the included angle between the water spiral groove and the dipole patch set is 120 °. When the water helix rotates clockwise, the radiation of the antenna is left-handed circular polarization; otherwise, it is right-hand circular polarization. The water helix in this embodiment is clockwise.
Referring to fig. 4, the gain remains stable over a large segment of frequency, increasing with increasing frequency.
Referring to fig. 5, due to the addition of the water spiral, the impedance is kept stable over a wide range of frequencies, and a non-frequency-varying characteristic occurs.
Referring to fig. 6 to 7, the radiation power is basically in a state of being greater than 0dBW from 16.8 to 27GHz, when the frequency is 20.6GHz, the radiation power reaches a maximum value of 0.1243dBW, the radiation efficiency is greater than 0dB from 13.2 to 27.8GHz, when the frequency is 20.6GHz, the radiation efficiency reaches a maximum value of 0.1265dB, and the antenna can radiate well on 70% impedance bandwidth.
The utility model discloses a manufacturing error is very big to the influence of each parameter of antenna, and it is very meticulous to need the manufacture process.
The above description of the embodiments is only intended to help understand the method of the present invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The broadband circularly polarized dipole patch antenna with the water helix is characterized by comprising an antenna body, wherein the antenna body comprises a dielectric substrate (1), the dielectric substrate (1) is provided with a first surface and a second surface which are parallel to each other, a plurality of patch patterns are covered on the first surface to form a dipole radiator (4) and a water helical groove (6), and the water helical groove (6) is filled with seawater to form a waveguide;
the second surface is covered with a metal grounding plate (2);
a coaxial line (3) penetrates through the dielectric substrate (1) from bottom to top and is used for feeding the patch antenna, the signal end of the coaxial line is connected with the dipole radiator (4), and the grounding end of the coaxial line is connected with the metal grounding plate (2);
a through hole (5) is further formed in the dielectric substrate (1), and the through hole (5) penetrates through the dielectric substrate (1) from the second surface to the first surface, but does not penetrate through the metal grounding plate (2) and the dipole radiator (4).
2. The broadband circularly polarized dipole patch antenna with water helix as claimed in claim 1, wherein the dielectric substrate (1) is square, and the length and width thereof are equal; the metal grounding plate (2) is also square, and the length and the width of the metal grounding plate are equal to those of the dielectric substrate (1).
3. The broadband circularly polarized dipole patch antenna with water helix according to claim 1 or 2, characterized in that the coaxial line (3) is located about 1mm near the center of the dielectric substrate (1), and the patch antenna is fed through the substrate from 5mm below the substrate to the top.
4. The broadband circularly polarized dipole patch antenna with the water helix as claimed in claim 1 or 2, wherein the first surface of the dielectric substrate (1) is coated with a plurality of patch patterns, and the patch patterns are metal sheets; there is a slight spacing between adjacent patch patterns, which are symmetrical about an origin.
5. The broadband circularly polarized dipole patch antenna with water helix as claimed in claim 1 or 2, characterized in that four sets of three through holes (5) are provided in the dielectric substrate (1), the four sets of through holes (5) being symmetrical about the z-axis.
6. The broadband circularly polarized dipole patch antenna with water helix according to claim 1 or 2, characterized in that the water helical slot (6) is embedded in the dielectric substrate (1) at a distance of about 0.5cm from the periphery of the dipole radiator (4), and has a rectangular cross section with an archimedean helix in the horizontal plane.
7. The broadband circularly polarized dipole patch antenna with water helix as claimed in claim 4, wherein the plurality of patch patterns are formed by combining a plurality of square and triangular patch patterns, at least the patch patterns R0, R1-1, R2-1, R3-1, T1-1, R1-2, R2-2, R3-2, T1-2 are provided, wherein R represents the rectangle and T represents the triangle; a gap of 0.1-0.3 mm is formed between adjacent patch patterns.
8. The broadband circularly polarized dipole patch antenna with the water helix as claimed in claim 6, wherein the water helix groove (6) is a bidirectional water helix groove formed by reversely extending and combining two Archimedes water helix grooves, each water helix is composed of two Archimedes spirals with different phases; the upper surface of the water spiral groove (6) and the dipole patch pattern are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920958936.3U CN210156545U (en) | 2019-06-25 | 2019-06-25 | Broadband circularly polarized dipole patch antenna with water helix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920958936.3U CN210156545U (en) | 2019-06-25 | 2019-06-25 | Broadband circularly polarized dipole patch antenna with water helix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210156545U true CN210156545U (en) | 2020-03-17 |
Family
ID=69763998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920958936.3U Active CN210156545U (en) | 2019-06-25 | 2019-06-25 | Broadband circularly polarized dipole patch antenna with water helix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210156545U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311216A (en) * | 2019-06-25 | 2019-10-08 | 杭州电子科技大学富阳电子信息研究院有限公司 | Broadband circular polarisation dipole paster antenna with water spiral |
| TWI795083B (en) * | 2021-11-19 | 2023-03-01 | 國立雲林科技大學 | Circularly polarized slot antenna used in outdoor large event rfid system |
-
2019
- 2019-06-25 CN CN201920958936.3U patent/CN210156545U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311216A (en) * | 2019-06-25 | 2019-10-08 | 杭州电子科技大学富阳电子信息研究院有限公司 | Broadband circular polarisation dipole paster antenna with water spiral |
| CN110311216B (en) * | 2019-06-25 | 2024-04-12 | 杭州电子科技大学 | Broadband circularly polarized dipole patch antenna with water spiral |
| TWI795083B (en) * | 2021-11-19 | 2023-03-01 | 國立雲林科技大學 | Circularly polarized slot antenna used in outdoor large event rfid system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10714835B2 (en) | Antenna and an antenna packaging structure | |
| US10381719B2 (en) | System method and apparatus including hybrid spiral antenna | |
| US10879618B2 (en) | Wideband substrate integrated waveguide slot antenna | |
| CN109888480B (en) | Broadband multi-resonance super-surface antenna based on non-periodic square ring structure | |
| CN203103499U (en) | Ultra wide band printed antenna | |
| CN103700932B (en) | A kind of miniaturized very high frequency(VHF) monopole type antenna | |
| Gupta et al. | Dual-band miniature coupled double loop GPS antenna loaded with lumped capacitors and inductive pins | |
| CN114156643B (en) | Ultra-wideband millimeter wave planar spiral circularly polarized antenna array | |
| CN113922075B (en) | Slow wave substrate integrated waveguide duplex antenna based on high-order mode | |
| CN210156545U (en) | Broadband circularly polarized dipole patch antenna with water helix | |
| CN114883785B (en) | Thin dual-polarization ultra-wide bandwidth angle scanning array antenna | |
| CN203787566U (en) | Double-rhombus loop multi-frequency microstrip antenna applied to 4G network | |
| CN111029734A (en) | Ultra-wideband end-fire antenna | |
| CN111682312B (en) | Asymmetrically cut patch antenna along E plane | |
| CN111162378A (en) | Microstrip antenna | |
| CN215221012U (en) | Dielectric resonator antenna | |
| CN113270723A (en) | Metamaterial structure antenna with quasi-rectangular cavity feed | |
| CN110311216B (en) | Broadband circularly polarized dipole patch antenna with water spiral | |
| CN105119057B (en) | A kind of multiband microstrip antenna | |
| CN114221137A (en) | Multifunctional super surface for absorption and transmission polarization conversion | |
| Singh et al. | Effect of photonic band gap structure on planar antenna configuration | |
| CN114039211A (en) | Ka frequency band substrate integrated waveguide holographic leaky-wave antenna based on liquid crystal | |
| CN108565548B (en) | Millimeter wave antenna | |
| CN215869814U (en) | Metamaterial structure antenna with quasi-rectangular cavity feed | |
| CN220873842U (en) | Antenna device and radar equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |