CN114843766A - Low-orbit satellite communication antenna - Google Patents
Low-orbit satellite communication antenna Download PDFInfo
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- CN114843766A CN114843766A CN202210606300.9A CN202210606300A CN114843766A CN 114843766 A CN114843766 A CN 114843766A CN 202210606300 A CN202210606300 A CN 202210606300A CN 114843766 A CN114843766 A CN 114843766A
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
- H01Q1/087—Extensible roll- up aerials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
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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 invention discloses a low-orbit satellite communication antenna, which only adopts a 90-degree equal-amplitude power division feed network, reduces the complexity, has the length of a microstrip radiation arm of lambda/2, reduces the size of the antenna compared with the existing four-arm helical antenna, and is convenient for realizing the miniaturization of the antenna.
Description
Technical Field
The invention relates to the field of satellite communication antennas, in particular to a low-orbit satellite communication antenna.
Background
Compared with medium and high orbit satellite communication, the low orbit satellite has the advantages of small satellite-ground delay, small path loss, small terminal size and the like, and the low orbit satellite communication antenna generally adopts a microstrip antenna, a ceramic antenna or a quadrifilar helix antenna and the like. The microstrip antenna and the ceramic antenna have the problems of narrow beam width, narrow standing wave bandwidth, lower low elevation gain and the like, and have poor overall performance when used for low-orbit satellite communication. Therefore, in the prior art, a quadrifilar helical antenna is generally used for low-earth orbit satellite communication, and the quadrifilar helical antenna generally has a wider circularly polarized radiation beam and also has a certain gain at a low elevation angle. However, the quadrifilar helix antenna usually needs to add a feed circuit with four-in-one and 90 ° phase difference, and the introduction of the feed circuit increases the complexity of the design and may also cause the deterioration of the antenna performance. In addition, the quadrifilar helix antenna has the characteristics of complex structure and narrow bandwidth, and in order to obtain a wider frequency band and good low elevation gain, a 3 λ/4 antenna scheme (the length of each helical radiating arm is 3/4 antenna resonant frequency wavelength) is generally required, so that the size of the quadrifilar helix antenna is large, and the quadrifilar helix antenna is not beneficial to miniaturization.
Disclosure of Invention
The invention aims to solve the technical problems of complex circuit and large volume of a quadrifilar helical antenna, and aims to provide a low-orbit satellite communication antenna which solves the problems of the existing quadrifilar helical antenna.
The invention is realized by the following technical scheme:
a low-orbit satellite communication antenna comprises a flexible dielectric plate, a 90-degree equal-amplitude power division feed network, a first microstrip radiation arm, a second microstrip radiation arm, a third microstrip radiation arm and a fourth microstrip radiation arm, wherein the first microstrip radiation arm, the second microstrip radiation arm, the third microstrip radiation arm and the fourth microstrip radiation arm are etched on the flexible dielectric plate;
the first microstrip radiating arm, the second microstrip radiating arm, the third microstrip radiating arm and the fourth microstrip radiating arm are obliquely etched on the flexible dielectric plate and are uniformly distributed on the flexible dielectric plate;
the flexible dielectric plate is wound to form a cylinder, and the first microstrip radiating arm, the second microstrip radiating arm, the third microstrip radiating arm and the fourth microstrip radiating arm are symmetrical about the axis of the cylinder and are sequentially spaced by 90 degrees;
one end of the first microstrip radiating arm is connected with one end of a third microstrip radiating arm, one end of the second microstrip radiating arm is connected with one end of a fourth microstrip radiating arm, the other end of the first microstrip radiating arm is connected with a first feed port of a 90-degree equal-amplitude power division feed network, the other end of the third microstrip radiating arm is empty, the other end of the second microstrip radiating arm is connected with a second feed port of the 90-degree equal-amplitude power division feed network, and the other end of the fourth microstrip radiating arm is empty;
the lengths of the first microstrip radiating arm, the second microstrip radiating arm, the third microstrip radiating arm and the fourth microstrip radiating arm are all lambda/2, and lambda represents the antenna resonant frequency wavelength corresponding to the low frequency band of the satellite communication antenna or the high frequency band of the satellite communication antenna.
Further, the power divider further comprises a dielectric base plate, the 90-degree equal-amplitude power dividing feed network is etched on the dielectric base plate, and the axis of the cylinder is perpendicular to the dielectric base plate.
Furthermore, the first microstrip radiating arm and the third microstrip radiating arm have the same structure and both comprise a first low-frequency radiating branch and a first high-frequency radiating branch, one end of the first low-frequency radiating branch in the first microstrip radiating arm is connected with one end of the first high-frequency radiating branch in the first microstrip radiating arm, and one end of the first low-frequency radiating branch in the third microstrip radiating arm is connected with one end of the first high-frequency radiating branch in the third microstrip radiating arm;
the other end of the first low-frequency radiation branch in the first microstrip radiation arm is connected with the other end of the first low-frequency radiation branch in the third microstrip radiation arm, and the other end of the first high-frequency radiation branch in the first microstrip radiation arm is connected with the other end of the first high-frequency radiation branch in the third microstrip radiation arm.
Further, the length of the first low-frequency radiation branch is 1/2 of the antenna resonant frequency wavelength corresponding to the low-frequency band of the satellite communication antenna, and the length of the first high-frequency radiation branch is 1/2 of the antenna resonant frequency wavelength corresponding to the high-frequency band of the satellite communication antenna.
And the other end of the first low-frequency radiation branch in the first microstrip radiation arm is connected with the other end of the first low-frequency radiation branch in the third microstrip radiation arm through the first metal rod.
And the other end of the first high-frequency radiation branch in the first microstrip radiation arm is connected with the other end of the first high-frequency radiation branch in the third microstrip radiation arm through the second metal rod.
Furthermore, the second microstrip radiating arm and the fourth microstrip radiating arm have the same structure and both comprise a second low-frequency radiating branch and a second high-frequency radiating branch, one end of the second low-frequency radiating branch in the second microstrip radiating arm is connected with one end of the second high-frequency radiating branch in the second microstrip radiating arm, and one end of the second low-frequency radiating branch in the fourth microstrip radiating arm is connected with one end of the second high-frequency radiating branch in the fourth microstrip radiating arm;
the other end of the second low-frequency radiation branch in the second microstrip radiation arm is connected with the other end of the second low-frequency radiation branch in the fourth microstrip radiation arm, and the other end of the second high-frequency radiation branch in the second microstrip radiation arm is connected with the other end of the second high-frequency radiation branch in the fourth microstrip radiation arm.
Further, the length of the second low-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the low-frequency band of the satellite communication antenna, and the length of the second high-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the high-frequency band of the satellite communication antenna.
The other end of the second low-frequency radiation branch in the second microstrip radiation arm is connected with the other end of the second low-frequency radiation branch in the fourth microstrip radiation arm through a third metal rod, and the third metal rod is perpendicular to the first metal rod.
The other end of the second high-frequency radiation branch in the second microstrip radiation arm is connected with the other end of the second high-frequency radiation branch in the fourth microstrip radiation arm through a fourth metal rod, and the fourth metal rod is perpendicular to the second metal rod.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides a low-orbit satellite communication antenna, which only adopts a 90-degree equal-amplitude power division feed network, reduces the complexity, has the length of a microstrip radiation arm of lambda/2, reduces the size of the antenna compared with the existing four-arm helical antenna, and is convenient for realizing the miniaturization of the antenna.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. On the attachment
In the figure:
fig. 1 is a schematic structural diagram of a low earth orbit satellite communication antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flexible dielectric sheet according to an embodiment of the present invention.
Fig. 3 is a schematic structural relationship diagram of the first metal bar and the third metal bar according to the embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
1-flexible dielectric plate, 21-first microstrip radiating arm, 211-first low-frequency radiating branch of first microstrip radiating arm, 212-first high-frequency radiating branch of first microstrip radiating arm, 22-second microstrip radiating arm, 221-second low-frequency radiating branch of second microstrip radiating arm, 222-second high-frequency radiating branch of second microstrip radiating arm, 31-third microstrip radiating arm, 311-first low-frequency radiating branch of third microstrip radiating arm, 312-first high-frequency radiating branch of third microstrip radiating arm, 32-fourth microstrip radiating arm, 321-second low-frequency radiating branch of fourth microstrip radiating arm, 322-second high-frequency radiating branch of fourth microstrip radiating arm, 4-dielectric base plate, 5-90 deg. equiamplitude power-dividing feed network and 61-first metal bar combination, 62-second metal rod combination, 611-first metal rod, 612-third metal rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1, a low earth orbit satellite communication antenna includes a flexible dielectric plate 1, a 90 ° equal-amplitude power division feed network 5, a first microstrip radiation arm 21, a second microstrip radiation arm 22, a third microstrip radiation arm 31, and a fourth microstrip radiation arm 32 etched on the flexible dielectric plate 1.
The first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are all obliquely etched on the flexible dielectric slab 1 and are uniformly distributed on the flexible dielectric slab 1.
The flexible dielectric plate 1 is wound to form a cylinder, and the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are symmetrical about the axis of the cylinder and are sequentially spaced by 90 degrees. The flexible dielectric plate 1 is used as a radiation substrate, and has the advantage of low weight compared with thick dielectric plates of ceramic antennas and microstrip antennas.
Because the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are all obliquely etched on the flexible dielectric slab 1, after the flexible dielectric slab 1 is wound to form a cylinder, the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are spirally distributed on the side surface of the cylinder. For example, the flexible dielectric board 1 may be in a parallelogram shape, the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31, and the fourth microstrip radiating arm 32 are all parallel to one side of the flexible dielectric board 1 (the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31, and the fourth microstrip radiating arm 32 are inclined with respect to two adjacent sides of the side), the flexible dielectric board 1 is wound to form a cylinder, so that the two adjacent sides are the upper end edge and the lower end edge of the cylinder, respectively, and then the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31, and the fourth microstrip radiating arm 32 are spirally distributed on the side of the cylinder.
The first, second, third and fourth microstrip radiating arms 21, 22, 31 and 32 should be uniform in shape. The inclination degree (the slope of the spiral) of the first microstrip radiation arm 21, the second microstrip radiation arm 22, the third microstrip radiation arm 31 and the fourth microstrip radiation arm 32 can be adjusted to realize a wide beam of the radiation pattern.
One end of the first microstrip radiating arm 21 is connected to one end of the third microstrip radiating arm 31, one end of the second microstrip radiating arm 22 is connected to one end of the fourth microstrip radiating arm 32, the other end of the first microstrip radiating arm 21 is connected to the first feed port of the 90-degree equal-amplitude power division feed network 5, the other end of the third microstrip radiating arm 31 is empty, the other end of the second microstrip radiating arm 22 is connected to the second feed port of the 90-degree equal-amplitude power division feed network 5, and the other end of the fourth microstrip radiating arm 32 is empty.
The lengths of the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are all lambda/2, and lambda represents an antenna resonant frequency wavelength corresponding to a low frequency band of the satellite communication antenna or a high frequency band of the satellite communication antenna. Compared with the traditional four-arm helical antenna, the lengths of the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are all reduced by 33%, and the volume of the low-orbit satellite communication antenna is reduced.
In a possible implementation mode, the low earth orbit satellite communication antenna further comprises a dielectric bottom plate 4, and a 90-degree equal-amplitude power division feed network 5 is etched on the dielectric bottom plate 4, and the axis of a cylinder is perpendicular to the dielectric bottom plate 4.
Optionally, the 90-degree equal-amplitude power division feed network 5 may include a microstrip line and a 90-degree power division bridge chip, and the 90-degree power division bridge chip implements a power division function and the microstrip line implements a connection function, thereby implementing 90-degree equal-amplitude power division feed. The traditional four-arm helical antenna adopts a four-port chip with one-to-four 90-degree phase difference, the 90-degree equal-amplitude power division feed network 5 only comprises a 90-degree power division bridge, the device cost is reduced by 90%, and the four-port helical antenna has the advantage of low cost.
Optionally, one end of the first microstrip radiating arm 21 is connected to one end of the third microstrip radiating arm 31, one end of the second microstrip radiating arm 22 is connected to one end of the fourth microstrip radiating arm 32, the other end of the first microstrip radiating arm 21 is welded to the first feed port of the 90 ° equal-amplitude power division feed network 5, the other end of the third microstrip radiating arm 31 is welded to the grounded copper sheet of the dielectric base plate 4, the other end of the second microstrip radiating arm 22 is welded to the second feed port of the 90 ° equal-amplitude power division feed network 5, and the other end of the fourth microstrip radiating arm 32 is welded to the grounded copper sheet of the dielectric base plate 4. Compared with the traditional four-arm helical antenna which only welds the bottom of the radiation arm and does not weld the top, the structure is more stable and is not easy to deform.
As shown in fig. 2, the first microstrip radiating arm 21 and the third microstrip radiating arm 31 have the same structure, and both include a first low-frequency radiating branch and a first high-frequency radiating branch, one end of the first low-frequency radiating branch 211 in the first microstrip radiating arm 21 is connected to one end of the first high-frequency radiating branch 212 in the first microstrip radiating arm 21, and one end of the first low-frequency radiating branch 311 in the third microstrip radiating arm 31 is connected to one end of the first high-frequency radiating branch 312 in the third microstrip radiating arm 31.
The other end of the first low-frequency radiation branch 211 in the first microstrip radiation arm 21 is connected to the other end of the first low-frequency radiation branch 311 in the third microstrip radiation arm 31, and the other end of the first high-frequency radiation branch 212 in the first microstrip radiation arm 21 is connected to the other end of the first high-frequency radiation branch 312 in the third microstrip radiation arm 31.
It should be noted that one end of the first low-frequency radiation branch 211 and one end of the first high-frequency radiation branch 212 in the first microstrip radiation arm 21 are welded to the first feed port of the 90 ° equal-amplitude power division feed network 5, and one end of the first low-frequency radiation branch 311 in the third microstrip radiation arm 31 and one end of the first high-frequency radiation branch 312 in the third microstrip radiation arm 31 are both welded to the ground copper sheet of the dielectric base plate 4.
In one possible implementation, the length of the first low-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the low-frequency band of the satellite communication antenna, and the length of the first high-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the high-frequency band of the satellite communication antenna.
Optionally, heights of the first low-frequency radiation branch and the first high-frequency radiation branch in the first microstrip radiation arm 21 may be adjusted, so as to adjust low-frequency-band and high-frequency-band standing waves of the satellite communication antenna. When the height of the first microstrip radiation arm 21 is adjusted, the same adjustment is performed for the second microstrip radiation arm 22, the third microstrip radiation arm 31, and the fourth microstrip radiation arm 32.
Optionally, the low-earth-orbit satellite communication antenna includes a first metal rod combination 61 and a second metal rod combination 62, low-frequency radiating branches in the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are connected by the first metal rod combination 61, and high-frequency radiating branches in the first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 are connected by the second metal rod combination 62.
The first metal rod assembly 61 includes a first metal rod 611 and a third metal rod 612, and the second metal rod assembly 62 includes a second metal rod and a fourth metal rod.
In a possible implementation manner, the low earth orbit satellite communication antenna further includes a first metal rod 611, and the other end of the first low frequency radiation branch in the first microstrip radiation arm 21 is connected to the other end of the first low frequency radiation branch in the third microstrip radiation arm 31 through the first metal rod.
In a possible embodiment, the low earth orbit satellite communication antenna further includes a second metal rod, and the other end of the first high frequency radiation branch in the first microstrip radiation arm 21 is connected to the other end of the first high frequency radiation branch in the third microstrip radiation arm 31 through the second metal rod.
In a possible embodiment, the second microstrip radiating arm 22 and the fourth microstrip radiating arm 32 have the same structure, and each of them includes a second low-frequency radiating branch and a second high-frequency radiating branch, one end of the second low-frequency radiating branch 221 in the second microstrip radiating arm 22 is connected to one end of the second high-frequency radiating branch 222 in the second microstrip radiating arm 22, and one end of the second low-frequency radiating branch 321 in the fourth microstrip radiating arm 32 is connected to one end of the second high-frequency radiating branch 322 in the fourth microstrip radiating arm 32.
The other end of the second low-frequency radiating branch 221 in the second microstrip radiating arm 22 is connected to the other end of the second low-frequency radiating branch 321 in the fourth microstrip radiating arm 32, and the other end of the second high-frequency radiating branch 222 in the second microstrip radiating arm 22 is connected to the other end of the second high-frequency radiating branch 322 in the fourth microstrip radiating arm 32.
It should be noted that one end of the second low-frequency radiation branch 221 in the second microstrip radiation arm 22 and one end of the second high-frequency radiation branch 222 in the second microstrip radiation arm 22 are both welded to the second feed port of the 90 ° equal-amplitude power division feed network 5, and one end of the second low-frequency radiation branch 321 in the fourth microstrip radiation arm 32 and one end of the second high-frequency radiation branch 322 in the fourth microstrip radiation arm 32 are both welded to the ground copper sheet of the dielectric substrate 4.
In one possible implementation, the length of the second low-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the low-frequency band of the satellite communication antenna, and the length of the second high-frequency radiation branch is 1/2 of the resonant frequency wavelength of the antenna corresponding to the high-frequency band of the satellite communication antenna.
The first microstrip radiating arm 21, the second microstrip radiating arm 22, the third microstrip radiating arm 31 and the fourth microstrip radiating arm 32 all comprise a low-frequency radiating branch and a high-frequency radiating branch, the low-frequency radiating branch is different from the high-frequency radiating branch in length, and the resonant current path is also different in length, so that the purpose of dual-band operation of the satellite communication antenna is achieved. Compared with the traditional quadrifilar helix antenna, the antenna has the advantage of multi-band operation.
In a possible implementation manner, the low-earth satellite communication antenna further includes a third metal rod 612, and the other end of the second low-frequency radiation branch in the second microstrip radiation arm 22 is connected to the other end of the second low-frequency radiation branch in the fourth microstrip radiation arm 32 through the third metal rod.
As shown in fig. 3, the third metal rod 612 is perpendicular to the first metal rod 611, and here, only the relationship between the third metal rod 612 and the first metal rod 611 is illustrated, and the connection relationship between the third metal rod 612 and the first metal rod 611 and other components is subject to the solution described in the embodiment.
In a possible embodiment, the low earth orbit satellite communication antenna further includes a fourth metal rod, and the other end of the second high frequency radiation branch in the second microstrip radiation arm 22 is connected to the other end of the second high frequency radiation branch in the fourth microstrip radiation arm 32 through the fourth metal rod, and the fourth metal rod is perpendicular to the second metal rod.
Optionally, the first microstrip radiating arm 21 is connected to the third microstrip radiating arm 31 to form a first folded radiating arm (which is similar to a gate structure), the second microstrip radiating arm 22 is connected to the fourth microstrip radiating arm 32 to form a second folded radiating arm (which is similar to a gate structure), and the first folded radiating arm and the second folded radiating arm are respectively connected to two feeding ports of the 90 ° equal-amplitude power division feeding network 5. The first folding radiation arm and the second folding radiation arm generate electromagnetic waves with equal amplitude, mutual orthogonality and 90-degree phase difference, and the electromagnetic waves are overlapped to form circularly polarized waves.
The working principle of the invention is as follows: the first folded radiating arm and the second folded radiating arm are fed through a 90-degree equal-amplitude power division feed network 5, low-frequency signal transmission is carried out through low-frequency radiating branches in the first folded radiating arm and the second folded radiating arm, and high-frequency signal transmission is carried out through high-frequency radiating branches in the first folded radiating arm and the second folded radiating arm.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A low-orbit satellite communication antenna is characterized by comprising a flexible dielectric plate (1), a 90-degree equal-amplitude power division feed network (5), a first microstrip radiation arm (21), a second microstrip radiation arm (22), a third microstrip radiation arm (31) and a fourth microstrip radiation arm (32), wherein the first microstrip radiation arm, the second microstrip radiation arm, the third microstrip radiation arm and the fourth microstrip radiation arm are etched on the flexible dielectric plate (1);
the first microstrip radiating arm (21), the second microstrip radiating arm (22), the third microstrip radiating arm (31) and the fourth microstrip radiating arm (32) are obliquely etched on the flexible dielectric slab (1) and are uniformly distributed on the flexible dielectric slab (1);
the flexible dielectric plate (1) is wound to form a cylinder, and the first microstrip radiation arm (21), the second microstrip radiation arm (22), the third microstrip radiation arm (31) and the fourth microstrip radiation arm (32) are symmetrical about the axis of the cylinder and are sequentially spaced by 90 degrees;
one end of the first microstrip radiating arm (21) is connected with one end of a third microstrip radiating arm (31), one end of the second microstrip radiating arm (22) is connected with one end of a fourth microstrip radiating arm (32), the other end of the first microstrip radiating arm (21) is connected with a first feed port of a 90-degree equal-amplitude power division feed network (5), the other end of the third microstrip radiating arm (31) is empty, the other end of the second microstrip radiating arm (22) is connected with a second feed port of the 90-degree equal-amplitude power division feed network (5), and the other end of the fourth microstrip radiating arm (32) is empty;
the lengths of the first microstrip radiating arm (21), the second microstrip radiating arm (22), the third microstrip radiating arm (31) and the fourth microstrip radiating arm (32) are all lambda/2, and lambda represents an antenna resonant frequency wavelength corresponding to a low frequency band of the satellite communication antenna or a high frequency band of the satellite communication antenna.
2. The low earth orbit satellite communication antenna of claim 1, further comprising a dielectric base plate (4), wherein the 90 ° constant amplitude power division feed network (5) is etched on the dielectric base plate (4), and the axis of the cylinder is perpendicular to the dielectric base plate (4).
3. The low-orbit satellite communication antenna according to claim 1 or 2, wherein the first microstrip radiating arm (21) and the third microstrip radiating arm (31) have the same structure and each include a first low-frequency radiating branch and a first high-frequency radiating branch, one end of the first low-frequency radiating branch in the first microstrip radiating arm (21) is connected with one end of the first high-frequency radiating branch in the first microstrip radiating arm (21), and one end of the first low-frequency radiating branch in the third microstrip radiating arm (31) is connected with one end of the first high-frequency radiating branch in the third microstrip radiating arm (31);
the other end of the first low-frequency radiation branch in the first microstrip radiation arm (21) is connected with the other end of the first low-frequency radiation branch in the third microstrip radiation arm (31), and the other end of the first high-frequency radiation branch in the first microstrip radiation arm (21) is connected with the other end of the first high-frequency radiation branch in the third microstrip radiation arm (31).
4. The low earth orbit satellite communication antenna of claim 3, wherein the first low frequency radiating stub has a length of 1/2 times the wavelength of the antenna resonant frequency corresponding to the low frequency band of the satellite communication antenna, and the first high frequency radiating stub has a length of 1/2 times the wavelength of the antenna resonant frequency corresponding to the high frequency band of the satellite communication antenna.
5. The low earth orbit satellite communication antenna of claim 3, further comprising a first metal rod, wherein the other end of the first low frequency radiation branch of the first microstrip radiation arm (21) is connected to the other end of the first low frequency radiation branch of the third microstrip radiation arm (31) through the first metal rod.
6. The low earth orbit satellite communication antenna of claim 5, further comprising a second metal rod, wherein the other end of the first high frequency radiation branch of the first microstrip radiation arm (21) is connected to the other end of the first high frequency radiation branch of the third microstrip radiation arm (31) through the second metal rod.
7. The low earth orbit satellite communication antenna of claim 6, wherein the second microstrip radiating arm (22) and the fourth microstrip radiating arm (32) have the same structure and each include a second low frequency radiating branch and a second high frequency radiating branch, one end of the second low frequency radiating branch in the second microstrip radiating arm (22) is connected to one end of the second high frequency radiating branch in the second microstrip radiating arm (22), and one end of the second low frequency radiating branch in the fourth microstrip radiating arm (32) is connected to one end of the second high frequency radiating branch in the fourth microstrip radiating arm (32);
the other end of the second low-frequency radiation branch in the second microstrip radiation arm (22) is connected with the other end of the second low-frequency radiation branch in the fourth microstrip radiation arm (32), and the other end of the second high-frequency radiation branch in the second microstrip radiation arm (22) is connected with the other end of the second high-frequency radiation branch in the fourth microstrip radiation arm (32).
8. The low earth orbit satellite communication antenna of claim 7, wherein the length of the second low frequency radiation branch is 1/2 of the antenna resonant frequency wavelength corresponding to the low frequency band of the satellite communication antenna, and the length of the second high frequency radiation branch is 1/2 of the antenna resonant frequency wavelength corresponding to the high frequency band of the satellite communication antenna.
9. The low earth orbit satellite communication antenna of claim 7, further comprising a third metal rod, wherein the other end of the second low frequency radiation branch of the second microstrip radiation arm (22) is connected to the other end of the second low frequency radiation branch of the fourth microstrip radiation arm (32) through the third metal rod, and the third metal rod is perpendicular to the first metal rod.
10. The low earth orbit satellite communication antenna of claim 7, further comprising a fourth metal rod, wherein the other end of the second high frequency radiation branch of the second microstrip radiation arm (22) is connected to the other end of the second high frequency radiation branch of the fourth microstrip radiation arm (32) through the fourth metal rod, and the fourth metal rod is perpendicular to the second metal rod.
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| CN202210606300.9A CN114843766B (en) | 2022-05-31 | 2022-05-31 | Low-orbit satellite communication antenna |
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| CN202210606300.9A CN114843766B (en) | 2022-05-31 | 2022-05-31 | Low-orbit satellite communication antenna |
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| CN114843766B CN114843766B (en) | 2024-04-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205282644U (en) * | 2015-11-25 | 2016-06-01 | 深圳市华颖泰科电子技术有限公司 | Four miniaturized arm helical antenna |
| CN208674366U (en) * | 2018-09-13 | 2019-03-29 | 罗森伯格技术（昆山）有限公司 | A kind of four-arm spiral antenna |
| CN109742519A (en) * | 2018-12-17 | 2019-05-10 | 深圳市华信天线技术有限公司 | A kind of more Netcom's antennas of broadband helical combination |
| WO2020087390A1 (en) * | 2018-10-31 | 2020-05-07 | 深圳市大疆创新科技有限公司 | Helical antenna and communication device |
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- 2022-05-31 CN CN202210606300.9A patent/CN114843766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205282644U (en) * | 2015-11-25 | 2016-06-01 | 深圳市华颖泰科电子技术有限公司 | Four miniaturized arm helical antenna |
| CN208674366U (en) * | 2018-09-13 | 2019-03-29 | 罗森伯格技术（昆山）有限公司 | A kind of four-arm spiral antenna |
| WO2020087390A1 (en) * | 2018-10-31 | 2020-05-07 | 深圳市大疆创新科技有限公司 | Helical antenna and communication device |
| CN109742519A (en) * | 2018-12-17 | 2019-05-10 | 深圳市华信天线技术有限公司 | A kind of more Netcom's antennas of broadband helical combination |
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| CN114843766B (en) | 2024-04-26 |
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