CN111146575A - Frequency scanning antenna based on half-mode substrate integrated cavity - Google Patents
Frequency scanning antenna based on half-mode substrate integrated cavity Download PDFInfo
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- CN111146575A CN111146575A CN202010026376.5A CN202010026376A CN111146575A CN 111146575 A CN111146575 A CN 111146575A CN 202010026376 A CN202010026376 A CN 202010026376A CN 111146575 A CN111146575 A CN 111146575A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A frequency scanning antenna based on a half-mode substrate integrated cavity comprises a half-mode substrate integrated cavity (1), wherein the half-mode substrate integrated cavity (1) is composed of a bottom surface (2), a top surface (3), a medium substrate (4), an opening (5), a feed probe (6) and a conductive side wall (7); the bottom surface (2) is positioned at the center of the bottom end of the medium substrate (4), and the top surface (3) is positioned at the center of the top end of the medium substrate (4); the feed probe (6) is a copper cylinder, the top end of the copper cylinder is connected with the top surface (3), and the bottom end of the copper cylinder is insulated from the bottom surface (2). The invention has simple structure, small size and convenient processing, the working frequency band of-10 dB is 2.395-2.457 GHz, the bandwidth of-10 dB is about 62MHz, the angle of the main beam direction in the xz plane is gradually scanned to 6 degrees from 39 degrees along with the gradual rise of the signal frequency from 2.395GHz to 2.457GHz, the antenna gain is always larger than 6dBi in the scanning process, the antenna efficiency is larger than 86 percent, and the invention is suitable for the fields of mobile communication, wearable equipment and the like and has better application prospect.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a frequency scanning antenna based on a half-mode substrate integrated cavity.
Background
In recent years, a frequency scanning antenna has become one of the research hotspots in the antenna field due to the characteristic that the beam direction changes with frequency. However, in the prior art, the frequency scanning antenna is generally an array antenna structure, and the size of the antenna is large, so that the antenna is difficult to be practical in the fields of mobile communication, wearable equipment and the like.
Disclosure of Invention
The invention aims to provide a frequency scanning antenna based on a half-mold substrate integrated cavity, which is small in size and simple in structure, so as to solve the problems that the existing array antenna is complex in structure, large in size and not suitable for portable and wearable equipment.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a frequency scanning antenna based on a half-mold substrate integrated cavity comprises the half-mold substrate integrated cavity, wherein the half-mold substrate integrated cavity is composed of a bottom surface, a top surface, a dielectric substrate, an opening, a feed probe and a conductive side wall. The half-mold substrate integrated cavity is divided into an upper half-mold substrate integrated cavity and a lower half-mold substrate integrated cavity which are arranged in a mirror symmetry mode. The bottom surface is positioned at the center of the bottom end of the dielectric substrate, and the top surface is positioned at the center of the top end of the dielectric substrate; the feed probe is a copper cylinder, the top end of the copper cylinder is connected with the top surface, and the bottom end of the copper cylinder is insulated from the bottom surface; the conductive side wall is composed of copper through holes which are arranged at equal intervals, the top ends of the copper through holes are connected with the top surface, and the bottom ends of the copper through holes are connected with the bottom surface; the conductive side wall is composed of a left conductive side wall, a right conductive side wall and a middle conductive side wall, the left conductive side wall and the right conductive side wall are respectively positioned at the left side and the right side of the top surface, the middle conductive side wall is positioned at the middle position of the top surface, the upper half-die substrate integrated cavity and the lower half-die substrate integrated cavity are respectively positioned at the upper side and the lower side of the middle conductive side wall, and the opening is positioned at the center position of the middle conductive side wall.
Further, the length of the dielectric substrate is 110mm, the width of the dielectric substrate is 110mm, and the height of the dielectric substrate is 1.58 mm; the material of the dielectric substrate is Rogers RT/duroid 5880.
Further, the bottom surface is the same as the bottom end of the medium substrate in size.
Further, the top surface is rectangular, the width of the top surface is 57.8mm, and the length of the top surface is 67.8 mm.
Furthermore, the top surface and the bottom surface are made of a conductive cloth material with the model number of NCS95R-CR, and the square resistance of the conductive cloth material is 0.04 omega.
Furthermore, the radius of the copper via holes is 0.4mm, and the distance between the copper via holes is 2 mm.
Further, the radius of the copper cylinder is 0.6 mm.
Further, the length of the opening is 9 mm.
Compared with the prior art, the invention has the beneficial effects that:
the antenna has the advantages of simple structure, small size and convenient processing, the working frequency band of-10 dB is 2.395-2.457 GHz, the bandwidth of-10 dB is about 62MHz, the angle of the main beam direction in an xz plane is gradually scanned to 6 degrees from 39 degrees along with the gradual rise of the signal frequency from 2.395GHz to 2.457GHz, the antenna gain is always greater than 6dBi in the scanning process, the antenna efficiency is greater than 86 percent, and the antenna is suitable for the fields of mobile communication, wearable equipment and the like and has better application prospect.
Drawings
FIG. 1 is a schematic structural diagram of a frequency scanning antenna based on a half-mold substrate integrated cavity according to the present invention;
FIG. 2 is a return loss curve of a frequency scanning antenna based on a half-mold substrate integrated cavity according to the present invention;
FIG. 3 is an xz plane radiation pattern of a frequency scanning antenna at 2.395-2.457 GHz based on a half-mold substrate integrated cavity according to the present invention;
in fig. 1: 1-a half-mold substrate integrated cavity; 11-upper half-mold substrate integrated cavity; 12-lower mold half substrate integration cavity; 2-bottom surface; 3-top surface; 4-a dielectric substrate; 5-opening; 6-feed probe; 7-conductive sidewalls; 71-left conductive sidewall; 72-right conductive sidewall; 73-middle conductive side wall.
The specific implementation mode is as follows:
the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1, a frequency scanning antenna based on a half-mold substrate integrated cavity includes a half-mold substrate integrated cavity 1, where the half-mold substrate integrated cavity 1 is composed of a bottom surface 2, a top surface 3, a dielectric substrate 4, an opening 5, a feeding probe 6, and a conductive sidewall 7. The mold half substrate integrated cavity 1 is divided into an upper mold half substrate integrated cavity 11 and a lower mold half substrate integrated cavity 12, and the upper mold half substrate integrated cavity 11 and the lower mold half substrate integrated cavity 12 are arranged in a mirror symmetry mode.
The dielectric substrate 4 was made of Rogers RT/duroid 5880, the length of the dielectric substrate 4 was 110mm, the width of the dielectric substrate 4 was 110mm, the height of the dielectric substrate 4 was 1.58mm, the relative dielectric constant of the dielectric substrate 4 was 2.2, and the loss tangent was 0.0009.
The bottom surface 2 is positioned at the center of the bottom end of the dielectric substrate 4, the top surface 3 is positioned at the center of the top end of the dielectric substrate 4, and both the bottom surface 2 and the top surface 3 have good conductive performance. The size of the bottom surface 2 is the same as that of the bottom end of the medium substrate 4, the length of the bottom surface 2 is 110mm, and the width of the bottom surface 2 is 110 mm. The top surface 3 is rectangular, the width of the top surface 3 is 57.8mm, and the length of the top surface 3 is 67.8 mm. The top surface 3 and the bottom surface 2 are made of conductive cloth made of NCS95R-CR material, and the square resistance of the conductive cloth is 0.04 omega.
The conductive side wall 7 is composed of copper through holes arranged at equal intervals, the top ends of the copper through holes are connected with the top surface 3, the bottom ends of the copper through holes are connected with the bottom surface 2, the radius of the copper through holes is 0.4mm, and the distance between the copper through holes is 2 mm. The conductive side wall 7 is composed of a left conductive side wall 71, a right conductive side wall 72 and a middle conductive side wall 73, the left conductive side wall 71 and the right conductive side wall 72 are respectively located at two sides of the top surface 3, the middle conductive side wall 73 is located at the middle position of the top surface 3, the upper half-mold substrate integration cavity 11 and the lower half-mold substrate integration cavity 12 are respectively located at the upper side and the lower side of the middle conductive side wall 73, and the conductive side wall 7 has good conductive performance. The opening 5 is located at the center of the middle conductive sidewall 73, and when the distance s between the openings 5 is 9mm, the antenna impedance matching is the best. The feed probe 6 is a copper cylinder, the radius of the copper cylinder is 0.6mm, the top end of the copper cylinder is connected with the top surface, and the bottom end and the bottom surface of the copper cylinder are insulated.
The lower half-mold substrate integrated cavity 12 is fed by the feed probe 6 and the upper half-mold substrate integrated cavity 11 is excited through an opening in the middle conductive sidewall 73. Under different resonant frequencies, the excited electric field modes in the symmetrical half-mold substrate integrated cavity are respectively odd-order mode/even-order mode, and in-phase/anti-phase equivalent magnetic dipoles are generated at the radiation openings of the lower half-mold substrate integrated cavity 12 and the upper half-mold substrate integrated cavity 11 respectively, so that different beam directions are obtained.
Carrying out simulation analysis by using HFSS (high frequency satellite system) simulation software to obtain an antenna size structure: w110 mm, L28.9 mm, Δ L0, and s9 mm.
FIG. 2 is a graph showing the simulated return loss (S) of a frequency-scanning antenna based on a half-mold substrate integrated cavity according to the present example11) The-10 dB working frequency band of the antenna is 2.395-2.457 GHz, and the-10 dB bandwidth is about 62 MHz.
Fig. 3 is an xz simulated planar normalized radiation pattern of the frequency scanning antenna based on the half-mold substrate integrated cavity in the present example at different frequencies in the 2.395-2.457 GHz band, and the angle of the main beam direction of the antenna in the xz plane is gradually scanned from 39 ° to 6 ° as the signal frequency gradually rises from 2.395GHz to 2.457 GHz.
According to the frequency scanning antenna based on the half-mold substrate integrated cavity, disclosed by the embodiment of the invention, the antenna gain and the antenna efficiency change along with the frequency in a frequency band of 2.395-2.457 GHz, and the antenna gain is always larger than 5.4dBi and the antenna efficiency is larger than 92% at all frequency points.
Claims (8)
1. A frequency scanning antenna based on a half-mode substrate integrated cavity is characterized in that: the half-mold substrate integrated cavity comprises a half-mold substrate integrated cavity (1), wherein the half-mold substrate integrated cavity (1) is composed of a bottom surface (2), a top surface (3), a medium substrate (4), an opening (5), a feed probe (6) and a conductive side wall (7), and the half-mold substrate integrated cavity (1) is divided into an upper half-mold substrate integrated cavity (11) and a lower half-mold substrate integrated cavity (12) which are arranged in a mirror symmetry mode; the bottom surface (2) is positioned at the center of the bottom end of the medium substrate (4), and the top surface (3) is positioned at the center of the top end of the medium substrate (4); the feed probe (6) is a copper cylinder, the top end of the copper cylinder is connected with the top surface (3), and the bottom end of the copper cylinder is insulated from the bottom surface (2); the conductive side wall (7) is composed of copper through holes which are arranged at equal intervals, the top ends of the copper through holes are connected with the top surface (3), and the bottom ends of the copper through holes are connected with the bottom surface (2); the conductive side wall (7) is divided into a left conductive side wall (71), a right conductive side wall (72) and a middle conductive side wall (73), the left conductive side wall (71) and the right conductive side wall (72) are respectively positioned at the left side and the right side of the top surface (3), the middle conductive side wall (73) is positioned at the middle position of the top surface (3), the upper half mold substrate integration cavity (11) and the lower half mold substrate integration cavity (12) are respectively positioned at the upper side and the lower side of the middle conductive side wall (73), and the opening (5) is positioned at the center position of the middle conductive side wall (73).
2. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 1, wherein: the length of the dielectric substrate (4) is 110mm, the width of the dielectric substrate (4) is 110mm, and the height of the dielectric substrate (4) is 1.58 mm; the material of the dielectric substrate (4) is Rogers RT/duroid 5880.
3. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 2, wherein: the bottom surface (2) and the bottom end of the medium substrate (4) are the same in size.
4. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 3, wherein: the top surface (3) is the rectangle, top surface (3) width is 57.8mm, top surface (3) length is 67.8 mm.
5. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 4, wherein: the top surface (3) and the bottom surface (2) are made of conductive cloth materials with the model number of NCS95R-CR, and the square resistance of the conductive cloth materials is 0.04 omega.
6. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 1, wherein: the radius of copper via hole is 0.4mm, the interval of copper via hole is 2 mm.
7. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 1, wherein: the radius of the copper cylinder is 0.6 mm.
8. The frequency-scanning antenna based on the half-mold substrate integrated cavity as claimed in claim 1, wherein: the length of the opening (5) is 9 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010026376.5A CN111146575B (en) | 2020-01-10 | 2020-01-10 | Frequency scanning antenna based on half-module substrate integrated cavity |
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| CN202010026376.5A CN111146575B (en) | 2020-01-10 | 2020-01-10 | Frequency scanning antenna based on half-module substrate integrated cavity |
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| CN111146575B CN111146575B (en) | 2023-07-07 |
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2020
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