Omnidirectional high-gain circularly polarized antenna

Abstract

The utility model discloses an omnidirectional high-gain circularly polarized antenna in the field of wireless communication, which comprises a fixed support rod, antenna bodies are uniformly distributed on the top and the periphery of the fixed support rod along the linear direction, and the antenna bodies are connected through bridging copper pipes arranged on the periphery of the fixed support rod. The antenna body comprises a metal oscillator A, a metal oscillator B, a metal short circuit piece and a plastic fixing piece, the metal oscillator A and the metal oscillator B are symmetrically arranged above and below the plastic fixing piece, and a plurality of clamping grooves are uniformly distributed on the periphery of the plastic fixing piece. According to the utility model, the array units are linearly arranged and are connected through the coaxial structures, and the length of each coaxial structure is one wavelength, so that the radiation phases of all the array units are ensured to be the same, the electromagnetic waves radiated by all the units are mutually interfered and enhanced to form high gain, the array assisting process is simple, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless communication field, concretely is a kind of omnidirectional high gain circularly polarized antenna. BACKGROUND

[0002] The existing circularly polarized antenna has the following problems:

[0003] 1.The circularly polarized antenna commonly seen in market is generally directional antenna, and omnidirectional circularly polarized antenna is relatively rare.And with the development of unmanned aerial vehicle technology and market, the demand for omnidirectional circularly polarized antenna is also increasing.

[0004] 2.Omnidirectional circularly polarized antenna is often difficult to form high gain array due to its structural characteristics, such as common clover form, and the array forming process is very complex, with high process cost.

[0005] Therefore, the skilled person in the art provides an omnidirectional high gain circularly polarized antenna to solve the problems raised in the above background. SUMMARY

[0006] The utility model aims at providing an omnidirectional high gain circularly polarized antenna to solve the problems raised in the above background.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] An omnidirectional high gain circularly polarized antenna comprises a fixed support rod, the top and periphery of the fixed support rod are provided with antenna bodies along the straight line direction, the antenna bodies are connected by a bridge copper pipe arranged on the periphery of the fixed support rod, the antenna body comprises a metal vibrator A, a metal vibrator B, a metal short-circuit component and a plastic fixing component, the metal vibrator A and the metal vibrator B are symmetrically arranged above and below the plastic fixing component, a plurality of clamping grooves are uniformly arranged on the periphery of the plastic fixing component, and the metal vibrator A and the metal vibrator B are fixed in the clamping grooves of the plastic fixing component by clamping.

[0009] As a further scheme of the utility model, the metal vibrator A and the metal vibrator B are connected by a metal short-circuit component, and the metal vibrator A and the metal vibrator B each comprise a middle bridge component, a narrow metal sheet with a length of about one-half wavelength and a wide metal sheet with a length of about one-half wavelength.

[0010] As a further scheme of the utility model, the narrow metal sheet and the wide metal sheet are staggered and formed on the periphery of the middle bridge component.

[0011] As a further scheme of the utility model: the sequence of the wide metal sheet and the narrow metal sheet of the metal vibrator A and the metal vibrator B is opposite, namely, when the arrangement mode of the metal vibrator A is wide-narrow-wide-narrow..., the arrangement mode of the metal vibrator B is narrow-wide-narrow-wide..., and the wide metal sheet and the narrow metal sheet are one-to-one corresponding.

[0012] As a further scheme of the utility model: the length center line of the last pair of wide and narrow metal sheets of the metal vibrator A and the metal vibrator B is connected by a metal short circuit piece, and the braid and the conductor of the radio frequency coaxial line are respectively connected to the first pair of wide and narrow metal sheets of the metal vibrator A and the metal vibrator B.

[0013] As a further scheme of the utility model: the fixed support rod is a hollow structure, and a radio frequency coaxial cable electrically connected to the antenna body is arranged on the back of the fixed support rod, and the bridge copper pipe, the fixed support rod and the radio frequency coaxial cable form a radio frequency coaxial line.

[0014] As a further scheme of the utility model: the number of the wide metal sheet and the narrow metal sheet is not limited, and is determined according to the specific requirements of the antenna design.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] In the utility model, the array units are arranged in a straight line, the units are connected through a coaxial structure, the length of the coaxial structure is one wavelength, so that the radiation phases of each array unit are ensured to be the same, the electromagnetic waves radiated by each unit interfere with each other to enhance and form high gain, and the array technology is simple and low in cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is an exploded view of the antenna body in the utility model;

[0019] Fig. 3 It is an exploded view of the radio frequency coaxial line in the utility model;

[0020] Fig. 4 It is a structural schematic view of the metal vibrator A in the utility model.

[0021] In the drawing: 1, antenna body; 101, metal vibrator A; 1011, narrow metal sheet; 1012, wide metal sheet; 1013, middle bridge piece; 102, metal vibrator B; 103, plastic fixing piece; 1031, clamping groove; 104, metal short circuit piece; 2, radio frequency coaxial line; 201, bridge copper pipe; 202, fixed support rod; 203, radio frequency coaxial cable. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Please refer to Figs. 1-4 In the embodiments of the present application, the omnidirectional high-gain circularly polarized antenna comprises a fixed support rod 202, the top and periphery of the fixed support rod 202 are uniformly provided with antenna bodies 1 along the straight line direction, the antenna bodies 1 are connected through the bridging copper pipe 201 arranged on the periphery of the fixed support rod 202, the antenna body 1 comprises a metal vibrator A 101, a metal vibrator B 102, a metal short-circuiting member 104 and a plastic fixing member 103, the metal vibrator A 101 and the metal vibrator B 102 are symmetrically arranged above and below the plastic fixing member 103, the periphery of the plastic fixing member 103 is uniformly provided with a plurality of clamping grooves 1031, and the metal vibrator A 101 and the metal vibrator B 102 are fixed in the clamping grooves 1031 of the plastic fixing member 103 by clamping.

[0024] The metal vibrator A 101 and the metal vibrator B 102 are connected through the metal short-circuiting member 104, and the metal vibrator A 101 and the metal vibrator B 102 each comprise a middle bridging member 1013, a narrow metal sheet 1011 with a length of about one-half wavelength and a wide metal sheet 1012 with a length of about one-half wavelength, the metal vibrator A 101 and the metal vibrator B 102 are assembled according to the wide-narrow corresponding mode, are fastened by the plastic fixing member 103, and have a specific spacing between the metal vibrator A 101 and the metal vibrator B 102.

[0025] The narrow metal sheet 1011 and the wide metal sheet 1012 are alternately formed on the periphery of the middle bridging member 1013.

[0026] The arrangement sequence of the wide metal sheet 1012 and the narrow metal sheet 1011 of the metal vibrator A 101 and the metal vibrator B 102 is opposite, that is, when the arrangement mode of the metal vibrator A 101 is wide-narrow-wide-narrow…, the arrangement mode of the metal vibrator B 102 is narrow-wide-narrow-wide…, and the wide metal sheet 1012 and the narrow metal sheet 1011 are one-to-one corresponding.

[0027] The last pair of wide and narrow metal sheets 1011 of the metal vibrator A 101 and the metal vibrator B 102 are connected by the metal short-circuiting member 104 on the length center line, and the braid and the conductor of the radio frequency coaxial line are respectively connected to the first pair of wide and narrow metal sheets 1011 of the metal vibrator A 101 and the metal vibrator B 102.

[0028] The fixed supporting rod 202 is a hollow structure, and a radio frequency coaxial cable 2 is arranged at the back of the fixed supporting rod 202 and electrically connected with the antenna body 1.

[0029] The number of the wide metal sheets 1012 and the narrow metal sheets 1011 is not limited and is determined according to the specific requirements of the antenna design.

[0030] The working principle of the utility model is: each antenna unit is distributed in a central rotational symmetry along the support center by four groups of 45-degree polarized dipoles, and the four groups of dipoles are connected through a one-to-four equal division power division network. Since the electromagnetic waves radiated by the dipoles are orthogonal to each other and have a phase difference of 90 degrees, the entire antenna unit forms a circularly polarized antenna with an omnidirectional radiation pattern.

[0031] The array units are arranged in a linear type, and the units are connected through coaxial structures, and the length of the coaxial structure is one wavelength, so that the radiation phases of each array unit are the same, the electromagnetic waves radiated by each unit interfere with each other to enhance the high gain, and the array technology is simple and low in cost.

[0032] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An omni-directional high gain circularly polarized antenna comprising a fixed mast (202), characterized in that: The top and periphery of the fixed support rod (202) are uniformly provided with antenna bodies (1) in a straight line direction, the antenna bodies (1) are connected through the bridging copper pipe (201) provided on the periphery of the fixed support rod (202), the antenna body (1) comprises a metal vibrator A (101), a metal vibrator B (102), a metal short-circuit part (104) and a plastic fixing part (103), the metal vibrator A (101) and the metal vibrator B (102) are symmetrically arranged above and below the plastic fixing part (103), a plurality of clamping grooves (1031) are uniformly arranged on the periphery of the plastic fixing part (103), and the metal vibrator A (101) and the metal vibrator B (102) are fixed in the clamping grooves (1031) of the plastic fixing part (103) by clamping.

2. The omni-directional high-gain circularly polarized antenna according to claim 1, wherein: The metal vibrator A (101) and the metal vibrator B (102) are connected through the metal short-circuit part (104), and the metal vibrator A (101) and the metal vibrator B (102) each comprise a middle bridging part (1013), a narrow metal sheet (1011) with a length of about one-half wavelength and a wide metal sheet (1012) with a length of about one-half wavelength.

3. The omni-directional high-gain circularly polarized antenna according to claim 2, wherein: The narrow metal sheet (1011) and the wide metal sheet (1012) are formed in an interlaced manner on the periphery of the middle bridging part (1013).

4. The omni-directional high-gain circularly polarized antenna according to claim 2, wherein: The sequence of the arrangement and connection of the wide metal sheet (1012) and the narrow metal sheet (1011) of the metal vibrator A (101) and the metal vibrator B (102) is opposite.

5. The omni-directional high-gain circularly polarized antenna according to claim 2, wherein: The most terminal pair of wide and narrow metal sheets (1011) of the metal vibrator A (101) and the metal vibrator B (102) are connected by the metal short-circuit part (104) on the length center line, and the braid and the conductor of the radio frequency coaxial line are respectively connected to the first pair of wide and narrow metal sheets (1011) of the metal vibrator A (101) and the metal vibrator B (102).

6. The omni-directional high-gain circularly polarized antenna according to claim 1, wherein: The fixed support rod (202) is a hollow structure, and a radio frequency coaxial cable (2) electrically connected with the antenna body (1) is arranged on the back of the fixed support rod (202), and the bridging copper pipe (201), the fixed support rod (202) and the radio frequency coaxial cable (2) form a radio frequency coaxial line (2).

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