CN212783805U - Circularly polarized antenna and circularly polarized array antenna - Google Patents
Circularly polarized antenna and circularly polarized array antenna Download PDFInfo
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- CN212783805U CN212783805U CN202022340748.XU CN202022340748U CN212783805U CN 212783805 U CN212783805 U CN 212783805U CN 202022340748 U CN202022340748 U CN 202022340748U CN 212783805 U CN212783805 U CN 212783805U
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Abstract
The utility model relates to a circular polarized antenna and circular polarized array antenna, circular polarized antenna includes: the antenna comprises a reflection floor, a double-sided copper-clad plate, a director and a connecting rod, wherein the connecting rod is connected with the reflection floor, the double-sided copper-clad plate and the director, the circular polarization is realized by a long and short mutually orthogonal gap on the upper copper-clad surface of the double-sided copper-clad plate, the lower copper-clad surface is a circular ring and two sections of rectangles, and the lower copper-clad surface and the upper copper-clad surface are coupled into a feed circuit through the gap, so that the antenna gain can be effectively improved, and the multipath interference resistance of the circular polarization antenna is improved.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a circular polarized antenna and circular polarized array antenna.
Background
The existing low-cost single-feed circularly polarized antenna has small 3dB axial ratio bandwidth and low gain, thereby causing poor anti-jamming capability of the antenna.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a circular polarized antenna and circular polarized array antenna improves anti multipath interference ability through improving 3dB axial ratio bandwidth and gain.
In order to achieve the above object, the utility model provides a following scheme:
a circularly polarized antenna, comprising: a reflecting floor A3, a double-sided copper clad plate A2, a guider A1 and a connecting rod A7;
a first through hole A4 is formed in the center of the reflection floor A3, a second through hole A5 is formed in the center of the double-sided copper clad plate A2, a third through hole A6 is formed in the center of the guider A1, the connecting rod A7 sequentially penetrates through the first through hole A4, the second through hole A5 and the third through hole A6, a first set distance exists between the plane where the guider A1 is located and the plane where the double-sided copper clad plate A2 is located, the first set distance is parallel to the second set distance, and the second set distance exists between the plane where the double-sided copper clad plate A2 is located and the plane where the reflection floor A3 is located, and the second set distance is parallel to each other;
a first gap and a second gap are arranged on the upper copper-clad surface A21 of the double-sided copper clad plate A2, the first gap and the second gap are mutually orthogonal to the center of the double-sided copper clad plate A2, and the length of the first gap is greater than that of the second gap; the lower copper-clad surface A22 of the double-sided copper clad plate A2 is a strip shape spanning the second through hole A5, and the included angle between the straight line of the strip length direction and the straight line of the first gap length direction is 45 degrees.
Optionally, the connecting rod a7 is a metal screw, the metal screw passes through the first through hole a4, a first nut A8, the second through hole a5, a second nut a9, the third through hole A6 and a third nut a10 in sequence, the reflective floor A3 and the double-sided copper clad plate a2 are fastened through the first nut A8, the double-sided copper clad plate a2 and the guider a1 are fastened through the second nut a9, and the metal screw passes through the guider a1 and then is fastened through the third nut a 10.
Optionally, the first nut A8 and the second nut a9 are nylon nuts and the third nut a10 is a metal nut.
Optionally, the first set distance is 0.046 λ, and the second set distance is 0.038 λ, where λ represents a center frequency wavelength of the circularly polarized antenna.
Optionally, the double-sided copper clad plate a2 is a glass fiber epoxy resin double-sided copper clad plate a 2.
Optionally, the director a1 is a circular metal director.
Optionally, the reflective floor a3 is a metal reflective floor.
The utility model also discloses a circular polarization array antenna, including a connecting wire and a plurality of the above-mentioned arbitrary circular polarization antennas;
the reflection floor A3 of each circularly polarized antenna is coplanar, and the double-sided copper clad plate A2 of each circularly polarized antenna is coplanar; the lower copper-clad surfaces A22 of the circularly polarized antennas are connected into a T-shaped feed network through the connecting wires.
Optionally, the number of the circularly polarized antennas is 4, and the connecting lines include a first rectangular connecting line 1, a second rectangular connecting line 2, a third rectangular connecting line 3, a fourth rectangular connecting line 4, a fifth rectangular connecting line 5, a sixth rectangular connecting line 6, a seventh rectangular connecting line 7, and an eighth rectangular connecting line 8;
two ends of the strip in the circularly polarized antenna are respectively recorded as a first connecting end and a second connecting end, and 4 circularly polarized antennas are respectively recorded as a first circularly polarized antenna, a second circularly polarized antenna, a third circularly polarized antenna and a fourth circularly polarized antenna;
the first connecting end of the first circularly polarized antenna is connected with one end of a fourth rectangular connecting wire 4, the other end of the fourth rectangular connecting wire 4 is connected with one end of a third rectangular connecting wire 3, the other end of the third rectangular connecting wire 3 is connected with one end of a second rectangular connecting wire 2, the other end of the second rectangular connecting wire 2 is connected with one end of a first rectangular connecting wire 1, the other end of the first rectangular connecting wire 1 is connected with one end of a sixth rectangular connecting wire 6, the other end of the sixth rectangular connecting wire 6 is connected with one end of a fifth rectangular connecting wire 5, and the other end of the fifth rectangular connecting wire 5 is connected with the first connecting end of the second circularly polarized antenna;
an included angle between the fourth rectangular connecting line 4 and a straight line where the second rectangular length direction of the first circularly polarized antenna is located is 90 degrees, an included angle between the fourth rectangular connecting line 4 and the third rectangular connecting line 3 is 90 degrees, an included angle between the third rectangular connecting line 3 and the second rectangular connecting line 2 is 90 degrees, an included angle between the second rectangular connecting line 2 and the first rectangular connecting line 1 is 90 degrees, an included angle between the first rectangular connecting line 1 and the sixth rectangular connecting line 6 is 90 degrees, an included angle between the sixth rectangular connecting line 6 and the fifth rectangular connecting line 5 is 90 degrees, and the fifth rectangular connecting line 5 and a straight line where the second rectangular length direction of the second circularly polarized antenna is located are parallel to each other;
the first circularly polarized antenna, the second circularly polarized antenna and the connecting line form a first connecting structure; the third circularly polarized antenna, the fourth circularly polarized antenna and the connecting line form a second connecting structure; first connection structure with second connection structure mirror symmetry, among the first connection structure first rectangle connecting wire 1 with among the second connection structure first rectangle connecting wire 1 is parallel to each other and passes through seventh rectangle connecting wire 7 is connected, seventh rectangle connecting wire 7 with first rectangle connecting wire 1 is perpendicular, the mid point of seventh rectangle connecting wire 7 with eighth rectangle connecting wire's one end is connected, eighth rectangle connecting wire 8 with seventh rectangle connecting wire 7 is perpendicular.
Optionally, the connecting wire material is copper.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a circular polarized antenna and circular polarized array antenna, circular polarized antenna includes: the antenna comprises a reflection floor, a double-sided copper-clad plate, a director and a connecting rod, wherein the connecting rod is connected with the reflection floor, the double-sided copper-clad plate and the director, the circular polarization is realized by a long and short mutually orthogonal gap on the upper copper-clad surface of the double-sided copper-clad plate, the lower copper-clad surface is a circular ring and two sections of rectangles, and the lower copper-clad surface and the upper copper-clad surface are coupled into a feed circuit through the gap, so that the antenna gain can be effectively improved, and the multipath interference resistance of the circular polarization antenna is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is an exploded view of a circular polarized antenna structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the copper-clad surface of the double-sided copper-clad plate according to the embodiment of the present invention;
FIG. 3 is a schematic view of the lower copper-clad surface of a double-sided copper-clad plate according to an embodiment of the present invention;
fig. 4 is a side view of a circular polarized antenna according to an embodiment of the present invention;
fig. 5 is a side view of a circular polarization array antenna according to an embodiment of the present invention;
fig. 6 is a top view of a circular polarization array antenna according to an embodiment of the present invention;
fig. 7 is a circular polarization array antenna feed network according to an embodiment of the present invention;
fig. 8 is a graph illustrating a standing wave curve of a circular polarized antenna according to an embodiment of the present invention;
fig. 9 is a gain diagram of a circularly polarized antenna according to an embodiment of the present invention;
fig. 10 is a 3dB axial ratio curve diagram of a circular polarized antenna according to an embodiment of the present invention;
fig. 11 is a gain curve diagram of a circular polarization array antenna according to an embodiment of the present invention;
fig. 12 is a 3dB axial ratio curve diagram of a circular polarization array antenna according to an embodiment of the present invention;
fig. 13 is a schematic diagram of circular polarized wave formation according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a circular polarized antenna and circular polarized array antenna improves anti multipath interference ability through improving 3dB axial ratio bandwidth and gain.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The utility model discloses a circular polarized antenna, as shown in FIGS. 1-4, a circular polarized antenna, circular polarized antenna includes: a reflective floor A3, a double-sided copper clad panel a2, a guide a1 and a connecting rod a 7.
The center of the reflecting floor A3 is provided with a first through hole A4, the center of the double-sided copper clad plate A2 is provided with a second through hole A5, the center of the guider A1 is provided with a third through hole A6, the connecting rod A7 sequentially passes through the first through hole A4, the second through hole A5 and the third through hole A6, the plane of the guider A1 and the plane of the double-sided copper clad plate A2 have a first set distance and are parallel to each other, and the plane of the double-sided copper clad plate A2 and the plane of the reflecting floor A3 have a second set distance and are parallel to each other.
The upper copper-clad surface A21 of the double-sided copper clad plate A2 is rectangular, a first gap and a second gap are arranged on the upper copper-clad surface A21, the first gap and the second gap are mutually orthogonal to the center of the double-sided copper clad plate A2, and the length of the first gap is greater than that of the second gap; the lower copper-clad surface A22 of the double-sided copper-clad plate A2 is a strip spanning the second via hole A5, the strip is specifically a circular ring and a first rectangle and a second rectangle which are respectively connected with the circular ring, and extension lines of two side edges in the length direction of the first rectangle are respectively superposed with extension lines of two side edges in the length direction of the second rectangle; the width of the first rectangle is smaller than the outer diameter of the circular ring, and an included angle between a straight line where the length direction of the first rectangle is located and a straight line where the length direction of the first gap is located is 45 degrees.
The utility model relates to a circular polarized antenna's technical principle as follows:
two phase differences of 90 degrees, linear polarization with equal amplitude and orthogonality, and the condition of synthesizing circular polarization:
1) in a rectangular coordinate system, the electric field vectors of the two waves must be perpendicular to each other in space, E1＝ExX、E2＝EyY；
2) The phase difference of the electric field vectors of the two waves along with the time is 90 DEG, E1＝Exsin(wr)，
E2＝Eysin(wr±90°)＝±Eycos (wr), taking the positive sign E1＝Exsin(wr)，E2＝Eycos(wr)；
3) The two wave electric field vectors must be equal in magnitude, Ex＝Ey＝E。
In a rectangular coordinate system: e1(t)＝Esin(wr)，E2And (t) ═ ecos (wr), which is the parameter equation of the circle.
Resultant electric field vector E of resultant waveΣThe amplitude value of (a) is determined,
resultant electric field vector EΣRotated at an angular rate w with time t at θ wt, modulo EΣThe magnitude of i is unchanged, i.e. the formation of circularly polarized waves, as shown in fig. 13.
The connecting rod A7 is a metal screw, the metal screw sequentially passes through the first through hole A4, a first nut A8, the second through hole A5, a second nut A9, the third through hole A6 and a third nut A10, the reflection floor A3 and the double-sided copper clad plate A2 are fastened through the first nut A8, the double-sided copper clad plate A2 and the guider A1 are fastened through the second nut A9, and the metal screw passes through the guider A1 and then is fastened through the third nut A10.
The utility model relates to a circular polarized antenna passes through screw and nut fastening reflection floor A3, two-sided copper facing A2 and guides to ware A1, makes circular polarized antenna simple structure, exempts from the welding, easily assembles.
The first nut A8 and the second nut A9 are nylon nuts, and the third nut A10 is a metal nut.
The double-sided copper clad plate A2 is a glass fiber epoxy resin (FR4) double-sided copper clad plate A2.
FR4 double-sided copper clad sheet a2 is divided into three layers: the upper layer is an upper copper-coated surface A21; the middle layer is a medium layer A23; the lower layer is a lower copper-coated surface A22.
The FR4 double-sided copper clad plate A2 has the detailed structure as follows:
the geometric center of the upper copper-coated surface A21 is provided with a round hole.
The upper copper clad surface a21 has a long and a short mutually orthogonal slot, i.e., a first slot and a second slot, which achieve the antenna circular polarization and its left and right handedness, as shown in fig. 2. The lengths of the two mutually orthogonal first and second gaps are adjusted to excite the electric field vector E with equal amplitudex＝EyThe phase change at time t differs by 90 °. The first gap and the second gap have one long gap and one short gap to excite the electric field vector E with the same amplitudexAnd EyResultant electric field vector EΣModulo | E of the resultant electric field vectorΣThe | is constant in size and rotates at an angular rate w with time t to form circular polarization.
Dielectric layer a23 has a via at the geometric center.
The lower copper-clad surface a22 is a circular ring and has two rectangular sections, i.e., a first rectangle and a second rectangle, and as shown in fig. 3, the lower copper-clad surface a22 is combined with the upper copper-clad surface gap to form a coupled feed circuit.
The director a1 is a circular metal director. The director a1 in this embodiment is a round aluminum sheet.
The reflective floor a3 is a metal reflective floor. The geometric center of the reflective floor A3 is the first through hole a4, and the reflective floor A3 is an aluminum plate in this embodiment.
The distance between the guider A1 and the copper-clad surface A21 of the FR4 double-sided copper-clad plate A2 is 0.046 lambda of central frequency wavelength, and circular polarization magnetic field radiation wave is generated by exciting electric field resonance through slot coupling feed.
The distance of the reflective floor A3 from the lower copper-clad face a22 was 0.038 λ center frequency wavelength.
The reflecting floor A3 resists backward electromagnetic radiation waves, and the antenna gain is effectively improved.
An air cavity loop is formed between the reflecting floor A3 and the upper copper-coated surface A21 of the FR4 double-sided copper-coated plate A2 by feeding a circuit to the lower copper-coated surface A22.
λ represents a center frequency wavelength of the circularly polarized antenna.
Fig. 8 is a circular polarized antenna standing wave curve. Fig. 9 is a gain curve of a single circularly polarized antenna, and fig. 10 is a 3dB axial ratio curve of a single circularly polarized antenna.
In this embodiment, the reflective floor A3 is a square aluminum plate with a thickness of 1.2mm and a length and a width of 53mm, and the geometric center of the reflective floor A3 has a through hole with a diameter of 2.2mm, i.e., the first through hole a 4.
The FR4 double-sided copper clad laminate A2 had a thickness of 1mm, a dielectric constant of 4.4, and a length and width of 53 mm. The geometrical size of a first gap on the upper copper-clad surface A21 is as follows: 18 x 1mm, the second slot geometry is: 8 x 1 mm.
The diameters of the round holes of the FR4 double-sided copper clad plate A2, which are mutually orthogonal to the first gap and the second gap, are as follows: 3.2 mm.
The first gap and the second gap are mutually orthogonal at an inclined angle of +/-45 degrees relative to the feed circuit;
the circular polarization 3dB axial ratio can be realized by adjusting the mutually orthogonal gap lengths of the first gap and the second gap. The FR4 double-sided copper clad laminate a2 has a through hole with a diameter of 2.2mm at the geometric center, i.e., a second via a 5.
FR4 double-sided copper-clad plate A2 had a first rectangle of 2.4 x 5mm in size on the lower copper-clad surface A22, a second rectangle of 2.4 x 12mm in size, a circular ring of 3.2mm in inside diameter and 6mm in outside diameter.
The guide a1 is a round aluminum sheet 1mm thick and 23.8mm in diameter, with a 2.2mm diameter through hole at the geometric center, the third via a 6.
The nut between the reflecting floor A3 and the FR4 double-sided copper clad plate A2 is a nylon nut of M2; the nut between the R4 double-sided copper clad plate A2 and the guider A1 is a nylon nut of M2.
The utility model relates to a circular polarized antenna adopts microstrip gap coupling feed to add director resonance and realizes circular polarized antenna, is a simple structure, exempts from the welding, easily assembles, gain height and the wide low-cost antenna of 3dB axial ratio bandwidth, has very big market value. The utility model discloses 3dB axial ratio bandwidth can reach 3.8%, effectively promotes anti multipath interference ability, reduces the time delay, but wide application in RFID (Radio Frequency Identification System) System, ETC (Electronic Toll Collection Electronic non-stop Toll Collection) System and RSU (Road Side Unit) etc..
Fig. 5 and 6 are schematic diagrams of a circular polarization array antenna structure, as shown in fig. 5-6, the utility model also discloses a circular polarization array antenna, circular polarization array antenna includes the connecting wire and the aforesaid is arbitrary circular polarization antenna.
The reflecting floors A3 of the 4 circularly polarized antennas are connected into a plane, and the double-sided copper clad plates A2 of the 4 circularly polarized antennas are connected into a plane; the lower copper-clad surfaces A22 of the 4 circularly polarized antennas are connected into a T-shaped feed network through the connecting wires. And coupling and feeding each circularly polarized antenna in the array through a T-shaped feeding network.
The connecting lines comprise a first rectangular connecting line 1, a second rectangular connecting line 2, a third rectangular connecting line 3, a fourth rectangular connecting line 4, a fifth rectangular connecting line 5, a sixth rectangular connecting line 6, a seventh rectangular connecting line 7 and an eighth rectangular connecting line 8.
The dimensions of the first rectangular connecting wire 1 in this embodiment are: 0.8X 40 mm; the dimensions of the second rectangular connecting wire 2 are: 1 × 13.2 mm; the dimensions of the third rectangular connecting line 3 are: 1.2X 5 mm; the dimensions of the fourth rectangular connecting line 4 are: 1.2X 2.8 mm; the dimensions of the fifth rectangular connecting line 5 are: 1.2X 5 mm; the dimensions of the sixth rectangular connecting wire 6 are: 1.2X 8.6 mm; the dimensions of the seventh rectangular connecting line 7 are: 1.2X 22 mm; the eighth rectangular connecting wire 8 has the following dimensions: 1.6X 39 mm.
The other end, opposite to the end where the second rectangle is connected with the circular ring, of the circularly polarized antennas is recorded as a first connection end, and the 4 circularly polarized antennas are respectively recorded as a first circularly polarized antenna, a second circularly polarized antenna, a third circularly polarized antenna and a fourth circularly polarized antenna.
The first connecting end of the first circularly polarized antenna is connected with one end of a fourth rectangular connecting wire 4, the other end of the fourth rectangular connecting wire 4 is connected with one end of a third rectangular connecting wire 3, the other end of the third rectangular connecting wire 3 is connected with one end of a second rectangular connecting wire 2, the other end of the second rectangular connecting wire 2 is connected with one end of a first rectangular connecting wire 1, the other end of the first rectangular connecting wire 1 is connected with one end of a sixth rectangular connecting wire 6, the other end of the sixth rectangular connecting wire 6 is connected with one end of a fifth rectangular connecting wire 5, and the other end of the fifth rectangular connecting wire 5 is connected with the first connecting end of the second circularly polarized antenna.
Fourth rectangle connecting wire 4 with contained angle between the second rectangle length direction place straight line of first circular polarized antenna is 90 degrees, fourth rectangle connecting wire 4 with contained angle between the third rectangle connecting wire 3 is 90 degrees, third rectangle connecting wire 3 with contained angle between the second rectangle connecting wire 2 is 90 degrees, second rectangle connecting wire 2 with contained angle between the first rectangle connecting wire 1 is 90 degrees, first rectangle connecting wire 1 with contained angle between the sixth rectangle connecting wire 6 is 90 degrees, sixth rectangle connecting wire 6 with contained angle between the fifth rectangle connecting wire 5 is 90 degrees, fifth rectangle connecting wire 5 with the second rectangle length direction place straight line of second circular polarized antenna is parallel to each other.
The first circularly polarized antenna, the second circularly polarized antenna and the connecting line form a first connecting structure, as shown by a dashed box i in fig. 7; the third circularly polarized antenna, the fourth circularly polarized antenna and the connecting line form a second connecting structure, as shown by a dashed box ii in fig. 7; first connection structure with second connection structure mirror symmetry, among the first connection structure first rectangle connecting wire 1 with among the second connection structure first rectangle connecting wire 1 is parallel to each other and passes through seventh rectangle connecting wire 7 is connected, seventh rectangle connecting wire 7 with first rectangle connecting wire 1 is perpendicular, the mid point of seventh rectangle connecting wire 7 with eighth rectangle connecting wire 8's one end is connected, eighth rectangle connecting wire 8 with seventh rectangle connecting wire 7 is perpendicular.
The connecting wire is made of copper.
The utility model relates to a distance between each circular polarized antenna center is 0.81 lambda among the circular polarized array antenna.
Fig. 11 is a gain curve of the circularly polarized array antenna, and fig. 12 is a 3dB axial ratio curve of the circularly polarized array antenna.
The utility model relates to a circular polarization array antenna gain reaches 13.1 dBi.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A circularly polarized antenna, comprising: a reflective floor (A3), a double-sided copper clad laminate (A2), a director (A1) and a connecting rod (A7);
a first through hole (A4) is formed in the center of the reflection floor (A3), a second through hole (A5) is formed in the center of the double-sided copper clad plate (A2), a third through hole (A6) is formed in the center of the guider (A1), the connecting rod (A7) sequentially penetrates through the first through hole (A4), the second through hole (A5) and the third through hole (A6), a first set distance is reserved between the plane where the guider (A1) is located and the plane where the double-sided copper clad plate (A2) is located, the first set distance is reserved between the plane where the double-sided copper clad plate (A2) is located and the plane where the reflection floor (A3) is located, and the second set distance is reserved between the plane where the double-sided copper clad plate (A2) is located and;
a first gap and a second gap are arranged on the upper copper coating surface (A21) of the double-sided copper coating plate (A2), the first gap and the second gap are mutually orthogonal to the center of the double-sided copper coating plate (A2), and the length of the first gap is greater than that of the second gap; the lower copper-clad surface (A22) of the double-sided copper-clad plate (A2) is in a strip shape crossing the second through hole (A5), and the included angle between the straight line of the strip length direction and the straight line of the first gap length direction is 45 degrees.
2. The circular polarization antenna of claim 1, wherein the connection rod (a7) is a metal screw, the metal screw sequentially passes through the first through hole (a4), the first nut (A8), the second through hole (a5), the second nut (a9), the third through hole (A6) and the third nut (a10), the reflective floor (A3) and the double-sided copper-clad plate (a2) are fastened by the first nut (A8), the double-sided copper-clad plate (a2) and the director (a1) are fastened by the second nut (a9), and the metal screw passes through the director (a1) and then is fastened by the third nut (a 10).
3. The circularly polarized antenna of claim 2, wherein the first nut (A8) and the second nut (a9) are nylon nuts and the third nut (a10) is a metal nut.
4. The circularly polarized antenna of claim 1, wherein the first set distance is 0.046 λ and the second set distance is 0.038 λ, λ representing a center frequency wavelength of the circularly polarized antenna.
5. The circularly polarized antenna of claim 1, wherein the double-sided copper-clad plate (a2) is a glass fiber epoxy resin double-sided copper-clad plate (a 2).
6. The circularly polarized antenna of claim 1, wherein said director (a1) is a circular metal director.
7. The circularly polarized antenna of claim 1, wherein said reflective floor (a3) is a metallic reflective floor.
8. A circularly polarized array antenna comprising a plurality of circularly polarized antennas of any of claims 1-7 and a connecting wire;
the reflective floor (A3) of each of the circularly polarized antennas is coplanar, and the double-sided copper-clad plate (A2) of each of the circularly polarized antennas is coplanar; the lower copper-clad surfaces (A22) of the circularly polarized antennas are connected into a T-shaped feed network through the connecting wires.
9. The circularly polarized array antenna of claim 8, wherein the number of the circularly polarized antennas is 4, and the connecting lines comprise a first rectangular connecting line (1), a second rectangular connecting line (2), a third rectangular connecting line (3), a fourth rectangular connecting line (4), a fifth rectangular connecting line (5), a sixth rectangular connecting line (6), a seventh rectangular connecting line (7), and an eighth rectangular connecting line (8);
two ends of the strip in the circularly polarized antenna are respectively recorded as a first connecting end and a second connecting end, and 4 circularly polarized antennas are respectively recorded as a first circularly polarized antenna, a second circularly polarized antenna, a third circularly polarized antenna and a fourth circularly polarized antenna;
the first connecting end of the first circularly polarized antenna is connected with one end of a fourth rectangular connecting wire (4), the other end of the fourth rectangular connecting wire (4) is connected with one end of a third rectangular connecting wire (3), the other end of the third rectangular connecting wire (3) is connected with one end of a second rectangular connecting wire (2), the other end of the second rectangular connecting wire (2) is connected with one end of a first rectangular connecting wire (1), the other end of the first rectangular connecting wire (1) is connected with one end of a sixth rectangular connecting wire (6), the other end of the sixth rectangular connecting wire (6) is connected with one end of a fifth rectangular connecting wire (5), and the other end of the fifth rectangular connecting wire (5) is connected with the first connecting end of the second circularly polarized antenna;
the included angle between the fourth rectangular connecting line (4) and the straight line of the second rectangular length direction of the first circularly polarized antenna is 90 degrees, the included angle between the fourth rectangular connecting line (4) and the third rectangular connecting line (3) is 90 degrees, the included angle between the third rectangular connecting line (3) and the second rectangular connecting line (2) is 90 degrees, the included angle between the second rectangular connecting line (2) and the first rectangular connecting line (1) is 90 degrees, the included angle between the first rectangular connecting line (1) and the sixth rectangular connecting line (6) is 90 degrees, the included angle between the sixth rectangular connecting line (6) and the fifth rectangular connecting line (5) is 90 degrees, the fifth rectangular connecting line (5) is parallel to a straight line in which the second rectangular length direction of the second circularly polarized antenna is located;
the first circularly polarized antenna, the second circularly polarized antenna and the connecting line form a first connecting structure; the third circularly polarized antenna, the fourth circularly polarized antenna and the connecting line form a second connecting structure; first connection structure with second connection structure mirror symmetry, among the first connection structure first rectangle connecting wire (1) with among the second connection structure first rectangle connecting wire (1) is parallel to each other and passes through seventh rectangle connecting wire (7) are connected, seventh rectangle connecting wire (7) with first rectangle connecting wire (1) is perpendicular, the mid point of seventh rectangle connecting wire (7) with the one end of eighth rectangle connecting wire (8) is connected, eighth rectangle connecting wire (8) with seventh rectangle connecting wire (7) are perpendicular.
10. The circularly polarized array antenna of claim 8, wherein the connecting wire material is copper.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134012A (en) * | 2020-10-20 | 2020-12-25 | 北京华通嘉业科技有限公司 | Circularly polarized antenna and circularly polarized array antenna |
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