CN112310646A - Easily conformal grounding loop antenna for realizing miniaturization - Google Patents
Easily conformal grounding loop antenna for realizing miniaturization Download PDFInfo
- Publication number
- CN112310646A CN112310646A CN202011162012.6A CN202011162012A CN112310646A CN 112310646 A CN112310646 A CN 112310646A CN 202011162012 A CN202011162012 A CN 202011162012A CN 112310646 A CN112310646 A CN 112310646A
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- connecting wire
- ground plate
- antenna
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- main radiator
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- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/005—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with variable reactance for tuning the antenna
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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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- Details Of Aerials (AREA)
Abstract
The invention discloses an easy conformal grounding loop antenna for realizing miniaturization, which comprises a main radiating body, a grounding plate, a variable capacitor, a matching network and a connecting wire, wherein the main radiating body is fixed above the grounding plate in a circular ring shape, two ends of one connecting wire are respectively connected with the grounding plate and an outer skin of a coaxial line at a feeding point, the other two ends of the connecting wire are respectively connected with the grounding plate and the tail end of the main radiating body, one end of the matching network is connected with an inner core of the coaxial line at the feeding point through the connecting wire, and the other end of the matching network is connected with the initial end of the main radiating body through the. The miniaturized easy conformal grounding loop antenna can greatly reduce the height of the antenna and the volume of the antenna while meeting the requirements of voltage standing wave ratio and bandwidth, is of a planar structure, can be well conformal with a carrier, is convenient for engineering installation, can adjust the performance of the antenna at any time by adopting lossless variable capacitor loading, and has high radiation efficiency.
Description
Technical Field
The invention relates to the technical field of loop antennas, in particular to an easily conformal grounding loop antenna for realizing miniaturization.
Background
The loop antenna works in a certain frequency band similar to a short-wave dipole antenna which is arranged vertically to the ground, the dipole antenna is simple in structure, generally adopts a center feed or bottom feed mode, is easy to obtain a wide impedance bandwidth and a wide directional diagram bandwidth, and has omnidirectional wave beams, so that the dipole antenna is widely applied to short-wave communication of ships and the like.
In the structure of the existing dipole antenna, in order to obtain the input impedance characteristic which is relatively gentle along with the change of the working wavelength, the concentrated impedance loading is needed, the antenna efficiency is reduced, the bearable power is small, the diameter of a radiating body of the existing dipole antenna is simply increased for widening the bandwidth, the diameter of the antenna is too large, the miniaturization cannot be realized, in addition, the height of the dipole antenna is generally several meters or even ten meters in order to meet the design target requirement, the dipole antenna is difficult to be conformal with a carrier, and therefore the development requirement of the miniaturization of the short wave antenna cannot be met.
Disclosure of Invention
The invention aims to provide a miniaturized easy-conformal grounding loop antenna, and aims to solve the problems that in the structure of the conventional dipole antenna provided in the background art, in order to obtain the input impedance characteristic which changes relatively gently along with the working wavelength, centralized impedance loading is required, the antenna efficiency is reduced, the bearable power is low, the diameter of a radiating body of the conventional dipole antenna is simply increased for widening the bandwidth, the diameter of the antenna is too large, the miniaturization cannot be realized, and in addition, the height of the dipole antenna is generally several meters or even ten meters for meeting the design target requirement, the dipole antenna is difficult to conform to a carrier, and the development requirement of the miniaturization of a short-wave antenna cannot be met.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a realize miniaturized easy conformal ground loop antenna, includes main radiator, ground plate, variable capacitance, matching network and connecting wire, the main radiator is fixed in the ground plate top for the ring form, one of them both ends of connecting wire link to each other with the crust of the coaxial line of ground plate and feed point department respectively, and another both ends link to each other with the end of ground plate and main radiator respectively, matching network one end is passed through the inner core of the coaxial line of connecting wire and feed point department and is connected, and the other end passes through the initial end of connecting wire and main radiator and is connected, the variable capacitance loading is in the main radiator.
Preferably, the main radiator is annular, the main radiator and the ground plate are parallel to each other, and the diameters of the main radiator and the ground plate are the same.
Preferably, the grounding plate is seen as a circular structure from top, and the grounding plate is welded with the main radiator through a connecting wire.
Preferably, the variable capacitor is loaded in the main radiator, and the first end and the last end of the variable capacitor are both connected with the main radiator in a welding manner.
Compared with the prior art, the invention has the beneficial effects that: the easily conformal ground loop antenna for realizing miniaturization,
1. the invention can greatly reduce the height of the antenna and reduce the occupied space of the antenna while meeting the requirements of voltage standing wave ratio and bandwidth;
2. the invention loads the variable capacitor on the main radiator, and can adjust the impedance characteristic of the antenna at any time, thereby adjusting the performance of the antenna.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of the right-view structure of the present invention;
FIG. 4 is a schematic diagram of a circuit diagram according to the present invention.
In the figure: 1. a main radiator; 2. a ground plate; 3. a matching circuit; 4. a variable capacitance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-4, the present invention provides a technical solution: an easy conformal grounding loop antenna for realizing miniaturization comprises a main radiator 1, a ground plate 2, a variable capacitor 4, a matching network 3 and a connecting wire, wherein the main radiator 1 is fixed above the ground plate 2 in a circular ring shape, two ends of one connecting wire are respectively connected with the ground plate 2 and an outer skin of a coaxial line at a feed point, the other two ends of the connecting wire are respectively connected with the ground plate 2 and the tail end of the main radiator 1, one end of the matching network 3 is connected with an inner core of the coaxial line at the feed point through the connecting wire, the other end of the matching network is connected with the initial end of the main radiator 1 through the connecting wire, and the variable capacitor 4 is loaded in the main;
the main radiator 1 is annular, the main radiator 1 and the grounding plate 2 are parallel to each other, and the diameters of the main radiator 1 and the grounding plate 2 are the same, so that the main radiator 1 can be conveniently installed above the grounding plate 2;
the ground plate 2 is in a circular structure when viewed from above, and the ground plate 2 is welded and connected with the main radiator 1 through a connecting wire, so that the mounting stability of the main radiator 1 is improved;
the variable capacitor 4 is loaded in the main radiator 1, and the first end and the last end of the variable capacitor 4 are both connected with the main radiator 1 in a welding mode, so that the variable capacitor 4 can be conveniently and stably loaded and installed.
The working principle is as follows: according to fig. 1-4, in order to meet the requirements of the operating bandwidth and the voltage standing wave ratio of the antenna, the diameters of the circular ring of the main radiator 1 and the ground plate 2 are both 1.2m, the length of the wire constituting the main radiator 1 is 3.7m, the diameter of the wire is 6mm, and the distance from the ground plate 2 is 10 cm; the tail end of the main radiator 1 is connected with the grounding plate 2 through a connecting wire, and the outer skin of the coaxial line at the feeding point is connected with the grounding plate 2 through the connecting wire;
the left end of the matching circuit 3 is connected with the inner core of the coaxial line at the feed point through a connecting wire, the right end is connected with the initial end of the main radiator 1 through a connecting wire, the value of the capacitor C is 472.6pF, the value of the inductor L is 1.32 muH, the value of the resistor R is 160 omega, the inductor and the resistor are connected in parallel, and the inductor and the resistor are connected with the sheath of the coaxial line through the connecting wire, so that the feed is effectively balanced, and the working bandwidth and the voltage standing-wave ratio of the antenna meet the requirements; the variable capacitor 4 is loaded at 1/4 of the circumference of the circular ring of the main radiator 1 away from the feed point, the impedance of the small-ring antenna is inductive in the short-wave frequency band, and the adjustable capacitor 4 is loaded to generate resonance, so that the bandwidth performance is effectively improved, and meanwhile, the capacitance value can be adjusted at any time, so that the resonance point is changed, and better voltage standing wave ratio performance, especially low-frequency performance, in a certain frequency band is obtained; the antenna structure is very simple, the planar structure is adopted, the antenna structure is easy to conform to a carrier, engineering installation is convenient, and the miniaturized easy-to-conform grounding loop antenna is convenient for people to use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an easy conformal ground connection loop antenna who realizes miniaturization, includes main radiator (1), ground plate (2), variable capacitance (4), matching network (3) and connecting wire, characterized by: the utility model discloses a ground plate, including main irradiator (1), ground plate (2), coupling wire, ground plate (2) and main irradiator (1) are fixed for the ring form in the ground plate top, one of them both ends of connecting wire link to each other with the crust of the coaxial line of feed point department respectively, and another both ends link to each other with the end of ground plate (2) and main irradiator (1) respectively, matching network (3) one end is connected with the inner core of the coaxial line of feed point department through the connecting wire, and the other end passes through the initial end of connecting wire with main irradia.
2. An easily conformal grounded loop antenna for miniaturization according to claim 1, wherein: the main radiator (1) is annular, the main radiator (1) is parallel to the grounding plate (2), and the diameters of the main radiator (1) and the grounding plate (2) are the same.
3. An easily conformal grounded loop antenna for miniaturization according to claim 1, wherein: the ground plate (2) is of a circular structure in plan view, and the ground plate (2) is connected with the main radiating body (1) in a welding mode through a connecting lead.
4. An easily conformal grounded loop antenna for miniaturization according to claim 1, wherein: the variable capacitor (4) is loaded in the main radiator (1), and the head end and the tail end of the variable capacitor (4) are connected with the main radiator (1) in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162012.6A CN112310646A (en) | 2020-10-27 | 2020-10-27 | Easily conformal grounding loop antenna for realizing miniaturization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162012.6A CN112310646A (en) | 2020-10-27 | 2020-10-27 | Easily conformal grounding loop antenna for realizing miniaturization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112310646A true CN112310646A (en) | 2021-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011162012.6A Pending CN112310646A (en) | 2020-10-27 | 2020-10-27 | Easily conformal grounding loop antenna for realizing miniaturization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112310646A (en) |
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2020
- 2020-10-27 CN CN202011162012.6A patent/CN112310646A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210202 |
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| WD01 | Invention patent application deemed withdrawn after publication |