CN117374592A - Omnidirectional antenna - Google Patents

Omnidirectional antenna Download PDF

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Publication number
CN117374592A
CN117374592A CN202311553416.1A CN202311553416A CN117374592A CN 117374592 A CN117374592 A CN 117374592A CN 202311553416 A CN202311553416 A CN 202311553416A CN 117374592 A CN117374592 A CN 117374592A
Authority
CN
China
Prior art keywords
coaxial line
assembled
oscillator
choke
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311553416.1A
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Chinese (zh)
Inventor
杨冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Geely Holding Group Co Ltd
Zhejiang Shikong Daoyu Technology Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Zhejiang Shikong Daoyu Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Geely Holding Group Co Ltd, Zhejiang Shikong Daoyu Technology Co Ltd filed Critical Zhejiang Geely Holding Group Co Ltd
Priority to CN202311553416.1A priority Critical patent/CN117374592A/en
Publication of CN117374592A publication Critical patent/CN117374592A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/528—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the re-radiation of a support structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means

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  • Details Of Aerials (AREA)

Abstract

The application provides an omnidirectional antenna, which comprises a base, an antenna housing, a coaxial line, a half-wave vibrator assembly and a choke piece, wherein the base is used for being assembled with an installation platform; the antenna housing is assembled with the base and forms a cavity with the base; the coaxial line is positioned in the cavity and extends along the vertical direction, and one end of the coaxial line is assembled with the base; the half-wave vibrator component is positioned in the cavity and is assembled at the other end of the coaxial line; the choke piece is arranged in the cavity and between the half-wave vibrator assembly and the base in the extending direction of the coaxial line, and is assembled outside the coaxial line and provided with a gap with the outer side wall of the coaxial line. The choke piece is assembled with the outer side of the coaxial line through the base and the mounting platform, is positioned between the half-wave oscillator component and the base, and is provided with a gap with the outer side wall of the coaxial line, so that current between the mounting platform and the antenna is restrained, and the performance of the antenna is improved; and different mounting platforms and environments do not need to be considered, the universality of the antenna is improved, and the structure is simple and easy to install.

Description

Omnidirectional antenna
Technical Field
The present application relates to the field of antenna technologies, and in particular, to an omni-directional antenna.
Background
The omnidirectional antenna mainly refers to an antenna with the horizontal plane full coverage radiation capability, and is particularly suitable for installation and use of telemetry, remote control and communication platforms such as handheld terminals, vehicle-mounted, airborne and the like. The maximum radiation direction of the omnidirectional antenna is a horizontal direction, and the omnidirectional antenna is usually mounted on a mounting platform when in use.
When the antenna is mounted on the mounting platform, current is transmitted to the mounting platform, so that the mounting platform participates in the radiation of the antenna, the antenna pattern is easily influenced, and the overall performance of the communication system is influenced; and because the mounting platform can cause radiation performance's influence to the antenna, consequently need consider different installation environment, go to design different antennas, the commonality is poor.
Disclosure of Invention
The omni-directional antenna is good in performance and high in universality.
The application provides an omni-directional antenna comprising:
the base is used for being assembled with the mounting platform;
the antenna housing is assembled with the base and forms a cavity with the base;
the coaxial line is positioned in the cavity and extends along the vertical direction, and one end of the coaxial line is assembled with the base;
the half-wave vibrator assembly is positioned in the cavity and is assembled at the other end of the coaxial line; a kind of electronic device with high-pressure air-conditioning system
And the choke piece is positioned in the cavity and between the half-wave vibrator assembly and the base in the extending direction of the coaxial line, and is assembled outside the coaxial line and has a gap with the outer side wall of the coaxial line.
Optionally, the half-wave oscillator assembly includes a first radiating oscillator and a second radiating oscillator which are oppositely arranged in the extending direction of the coaxial line, and the first radiating oscillator and the second radiating oscillator are both in cylindrical structures; the coaxial line comprises a radio frequency connector and a conductor connected with the radio frequency connector and extending along the vertical direction, the conductor comprises an inner conductor, a dielectric layer and an outer conductor which are distributed from inside to outside, the top part of the inner conductor protrudes out of the dielectric layer and is arranged on the outer conductor, the protruding part of the inner conductor is located in the first radiating oscillator and assembled with the bottom of the first radiating oscillator, and the second radiating oscillator is located below the first radiating oscillator and assembled on the periphery of the outer conductor.
Optionally, a first opening is formed at the top of the first radiating element, and the protruding portion of the inner conductor does not extend out of the first opening.
Optionally, a second opening is formed in the top of the second radiating oscillator, and the outer conductor extends out of the second opening to be connected with the radio frequency connector.
Optionally, the half-wave oscillator assembly further includes an oscillator fixing ring, one end of the oscillator fixing ring is assembled with the first radiating oscillator, and the other end of the oscillator fixing ring is assembled with the second radiating oscillator.
Optionally, a first mounting hole is formed in the top of the oscillator fixing ring, and a first internal thread is arranged in the first mounting hole; the outer side wall of the first radiating oscillator is provided with a first external thread matched with the first internal thread, and the first radiating oscillator is connected with the first internal thread in a matched mode through the first external thread and assembled in the first mounting hole.
Optionally, a second mounting hole is formed in the bottom of the oscillator fixing ring, and a second internal thread is formed in the second mounting hole; the outer side wall of the second radiating oscillator is provided with a second external thread matched with the second internal thread, and the second radiating oscillator is connected with the second internal thread in a matched mode through the second external thread and assembled in the second mounting hole.
Optionally, the oscillator fixing ring is made of a dielectric material.
Optionally, the choke member includes a choke portion and an isolation portion connected to the choke portion, the choke portion extends in a vertical direction, is enclosed on a peripheral side of the outer conductor, and has a gap with the peripheral side of the outer conductor, the isolation portion extends in a horizontal direction, is located at a bottom of the choke portion and is located at an outer peripheral wall of the outer conductor, and the choke portion, the isolation portion and Zhou Cewei of the outer conductor are combined to form a groove with an opening.
Optionally, lengths of the first radiating element and the second radiating element in an extending direction of the coaxial line are the same.
Optionally, the length of the choke in the extending direction of the coaxial line is the same as the lengths of the first radiating element and the second radiating element in the extending direction thereof.
Optionally, the length of the first radiating oscillator in the extending direction of the coaxial line is one quarter of the wavelength of the central frequency point.
Optionally, the length of the second radiating oscillator in the extending direction of the coaxial line is one quarter of the wavelength of the central frequency point.
Optionally, the length of the choke in the extending direction of the coaxial line is a quarter of the wavelength of the center frequency point.
Optionally, the choke is welded to the outer peripheral wall of the outer conductor.
Optionally, the first radiating element is welded to the outer peripheral wall of the protruding portion of the inner conductor.
Optionally, the second radiating element is welded to the outer peripheral wall of the outer conductor.
Optionally, the choke is a metal sleeve.
Optionally, the material of the radome is a high-wave-transmission material.
Optionally, the inner wall of radome bottom is equipped with the internal thread, the lateral wall of base be close to the one end of radome be equipped with the external screw thread that the internal thread matees, the radome passes through the internal screw thread with external screw thread matees to be connected, with the base equipment is fixed.
According to the omnidirectional antenna, the base is assembled with the mounting platform, the choke piece is assembled with the outer side of the coaxial line and is positioned between the half-wave oscillator assembly and the base, and a gap is reserved between the choke piece and the outer side wall of the coaxial line, so that current between the mounting platform and the antenna is restrained, and the performance of the antenna is improved; meanwhile, different mounting platforms and mounting environments do not need to be considered, the universality of the antenna is improved, and the antenna is simple in structure and easy to install.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of one embodiment of an omni-directional antenna of the present application.
Fig. 2 is a square standing wave ratio diagram of the omni-directional antenna shown in fig. 1.
Figure 3 is a simulated gain pattern for one embodiment of the omni-directional antenna shown in figure 1.
Reference numerals illustrate:
omnidirectional antenna 1, base 2, external screw thread 21, radome 3, internal screw thread 31, cavity 32, coaxial line 4, radio frequency connector 41, internal conductor 42, dielectric layer 43, external conductor 44, half wave vibrator assembly 5, first radiating element 51, first opening 511, first external screw thread 512, second radiating element 52, second opening 521, second external screw thread 522, element fixing ring 53, first mounting hole 531, first internal screw thread 532, second mounting hole 533, second internal screw thread 534, choke 6, choke 61, isolation 62, groove 63
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus consistent with some aspects of the present application as detailed in the accompanying claims.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "a" or "an" and the like as used in the description and the claims do not denote a limitation of quantity, but rather denote the presence of at least one. The term "plurality" includes a pair, corresponding to at least one pair. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
The omnidirectional antenna comprises a base, an antenna housing, a coaxial line, a half-wave vibrator assembly and a choke piece, wherein the base is used for being assembled with an installation platform; the antenna housing is assembled with the base and forms a cavity with the base; the coaxial line is positioned in the cavity and extends along the vertical direction, and one end of the coaxial line is assembled with the base; the half-wave vibrator component is positioned in the cavity, and the half-wave vibrator component is assembled at the other end of the coaxial line; and the choke piece is positioned in the cavity and between the half-wave vibrator assembly and the base in the extending direction of the coaxial line, and is assembled outside the coaxial line and provided with a gap with the outer side wall of the coaxial line. The choke piece is assembled with the outer side of the coaxial line through the base and the mounting platform, is positioned between the half-wave oscillator assembly and the base, and is provided with a gap with the outer side wall of the coaxial line, so that current between the mounting platform and the antenna is restrained, and the performance of the antenna is improved; meanwhile, different mounting platforms and mounting environments do not need to be considered, the universality of the antenna is improved, and the antenna is simple in structure and easy to install.
The application provides an omni-directional antenna. The omni-directional antenna of the present application will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.
The omni-directional antenna is good in performance and high in universality.
Fig. 1 is a schematic diagram of one embodiment of an omni-directional antenna 1 of the present application. In the embodiment shown in fig. 1, the omni-directional antenna 1 comprises a base 2, a radome 3, a coaxial line 4, a half-wave element assembly 5, a choke 6. The base 2 is for assembly with a mounting platform. The inner wall of antenna housing 3 bottom is equipped with internal thread 31, and the lateral wall of base 2 is close to the one end of antenna housing 3 and is equipped with the external screw thread 21 that matches with internal thread 31, and antenna housing 3 passes through internal thread 31 and external screw thread 21 matching connection, and is fixed with base 2 equipment. The antenna housing 3 and the base 2 are assembled in a threaded connection mode, the connection mode is simple, the installation is convenient, and the structure is compact and reliable. The radome 3 is made of a high wave-transparent material. The high wave-transparent material has the functions of lightning protection, interference resistance and durability, and has good wave-transparent effect.
In the embodiment shown in fig. 1, the radome 3 is assembled with the base 2 and forms a cavity 32 with the base 2. The coaxial line 4, the half-wave vibrator assembly 5 and the choke 6 are all located in the cavity 32. The space inside the cavity 32 is used for accommodating the coaxial line 4, the half-wave vibrator assembly 5 and the choke piece 6, so that the space utilization rate is high. The radome 3 is used for protecting internal components, and constraining the internal components in a horizontal dimension, so as to increase the resistance of the omnidirectional antenna 1 to mechanical vibration energy. Wherein the coaxial line 4 extends in a vertical direction, and one end of the coaxial line 4 is assembled with the base 2. The half-wave vibrator assembly 5 is assembled at the other end of the coaxial line 4. The choke 6 is located between the half-wave vibrator assembly 5 and the base 2 in the extending direction of the coaxial line 4, the choke 6 being assembled outside the coaxial line 4 with a gap between the choke and the outer side wall of the coaxial line 4. The radio frequency signal is fed into the half-wave vibrator assembly 5 through the coaxial line 4 to excite the corresponding frequency band current, so that electromagnetic waves are radiated, and the choke piece 6 suppresses the current of the coaxial line 4. The choke piece 6 is assembled with the outer side of the coaxial line 4 and is positioned between the half-wave oscillator assembly 5 and the base 2 through the assembly of the base 2 and the mounting platform, and a gap is reserved between the choke piece and the outer side wall of the coaxial line 4, so that current between the mounting platform and the antenna is restrained, and the performance of the antenna is improved; meanwhile, different mounting platforms and mounting environments do not need to be considered, the universality of the antenna is improved, and the antenna is simple in structure and easy to install.
In the embodiment shown in fig. 1, the half-wave vibrator assembly 5 comprises a first radiating vibrator 51 and a second radiating vibrator 52 arranged opposite in the extension direction of the coaxial line 4. The first radiating element 51 and the second radiating element 52 are for radiating electromagnetic waves. The coaxial line 4 comprises a radio frequency connector 41 and a conductor connected to the radio frequency connector 41 and extending in a vertical direction, the conductor comprising an inner conductor 42, a dielectric layer 43 and an outer conductor 44 distributed from inside to outside. The outer conductor 44 and the inner conductor 42 are used for receiving and transmitting radio frequency signals, respectively. A top portion of the inner conductor 42 is provided protruding from the dielectric layer 43 and the outer conductor 44. The conductors are in the form of open wires with the top portions of the conductors stripped of the outer conductor 44 and the inner conductor 42 leaving the inner conductor 42 to form a raised portion of the inner conductor 42. The protruding portion of the inner conductor 42 is located inside the first radiating element 51 and assembled with the bottom of the first radiating element 51, and the second radiating element 52 is located below the first radiating element 51 and assembled on the peripheral side of the outer conductor 44. So set up, simple structure, simple to operate and with low costs. The radio frequency signal is fed into the first radiating oscillator 51 through the inner conductor 42, and is fed into the second radiating oscillator 52 through the outer conductor 44, so that the current in the corresponding frequency band is excited, and the electromagnetic wave is radiated. The first radiating element 51 is welded to the outer peripheral wall of the protruding portion of the inner conductor 42, and the second radiating element 52 is welded to the outer peripheral wall of the outer conductor 44. The choke piece 6 is provided with a welding hole position for welding with the outer conductor 44, and the welding hole position is convenient to weld, simple in welding mode and easy to operate. Other assembly methods may also be used, without limitation. The top of the first radiating element 51 is provided with a first opening 511, and the protruding part of the inner conductor 42 does not protrude out of the first opening 511. So arranged, the inner conductor 42 may be surrounded by the first radiating element 51, thereby protecting the inner conductor 42. The top of the second radiating element 52 is provided with a second opening 521, and the outer conductor 44 extends out of the second opening 521 to be connected with the rf connector 41. The radio frequency connector 41 is used for transmitting radio frequency signals.
In the embodiment shown in fig. 1, the lengths of the first radiating element 51 and the second radiating element 52 in the extending direction of the coaxial line 4 are the same. The first radiating oscillator 51 and the second radiating oscillator 52 have the same length, so that the radiating oscillator has good radiation performance, high universality and convenient assembly. Specifically, the length of the first radiating element 51 in the extending direction of the coaxial line 4 is one quarter of the center frequency point wavelength. The length of the second radiating element 52 in the extension direction of the coaxial line 4 is a quarter of the wavelength of the center frequency point. In this embodiment, the wavelength of the center frequency point is λ 0 . The length of the first radiating element 51 in the extending direction of the coaxial line 4 is 1/4λ 0 . The length of the second radiating oscillator 52 in the extending direction of the coaxial line 4 is 1/4λ 0 . The first radiating element 51 and the second radiating element 52 are both cylindrical structures. The tubular structure is easier to mount to the coaxial line 4 and has good radiation performance. And both the first radiating element 51 and the second radiating element 52 are metallic materials. The metal has good conductivity and mechanical strength, can effectively conduct electromagnetic waves and maintain the structural stability of the first radiating oscillator 51 and the second radiating oscillator 52, and avoids deterioration caused by material parameters and machining errors.
In the embodiment shown in fig. 1, the half-wave resonator assembly 5 further comprises a resonator fixing ring 53, one end of the resonator fixing ring 53 being assembled with the first radiating resonator 51, and the other end of the resonator fixing ring 53 being assembled with the second radiating resonator 52. The vibrator fixing ring 53 is used to limit the relative positional relationship of the first radiating vibrator 51 and the second radiating vibrator 52. Since the first radiating element 51 and the second radiating element 52 may have a cold joint phenomenon in a welding manner with the coaxial line 4, the first radiating element 51 and the second radiating element 52 are easily unstable, and the oscillator fixing ring 53 is provided to further stabilize the first radiating element 51 and the second radiating element 52. Wherein, partial inner wall of the oscillator fixing ring 53 extends inwards between the gaps of the first radiating oscillator 51 and the second radiating oscillator 52 and is abutted against the first radiating oscillator 51 and the second radiating oscillator 52, so that the relative position relationship between the first radiating oscillator 51 and the second radiating oscillator 52 is further limited. The vibrator fixing ring 53 has a first mounting hole 531 at the top, and a first female screw 532 is provided in the first mounting hole 531. The outer side wall of the first radiating element 51 is provided with a first external thread 512 matched with the first internal thread 532, and the first radiating element 51 is connected with the first internal thread 532 in a matched manner through the first external thread 512 and assembled in the first mounting hole 531. The first radiating oscillator 51 and the oscillator fixing ring 53 are screwed and fixed with the first external thread 512 through the first internal thread 532, and the first radiating oscillator 51 and the oscillator fixing ring 53 are connected in a threaded connection mode, so that the connection mode is simple, and the installation is convenient. The bottom of the oscillator fixing ring 53 is provided with a second mounting hole 533, and a second internal thread 534 is arranged in the second mounting hole 533; the outer side wall of the second radiating element 52 is provided with a second external thread 522 matched with a second internal thread 534, and the second radiating element 52 is connected with the second internal thread 534 in a matched manner through the second external thread 522 and assembled in the second mounting hole 533. The second radiating oscillator 52 and the oscillator fixing ring 53 are screwed and fixed with the second external thread 522 through the second internal thread 534, the second radiating oscillator 52 and the oscillator fixing ring 53 are assembled in a threaded connection mode, the connection mode is simple, and the installation is convenient. And the arrangement of the first and second female screws 532 and 522 also enables to precisely position the spacing between the first and second radiating elements 51 and 52. In this embodiment, the oscillator fixing ring 53 is a dielectric material. The dielectric material is light, and the overall weight of the omnidirectional antenna 1 is reduced.
In the embodiment shown in fig. 1, a choke 6 is arranged between the second radiating element 52 and the base 2 on the coaxial line 4, the choke 6 being of a medium-pass construction, passing through the coaxial line 4 and being located below the second radiating element 52. The choke 6 serves to suppress the current of the outer conductor 44 of the coaxial line 4. The choke 6 has an opening at an end facing the second radiating element 52 for the coaxial line 4 to pass through the choke 6, and a partition 62 at an end of the choke 6 facing the base 2, and the partition 62 is assembled on the outer peripheral wall of the outer conductor 44 and abuts against the outer peripheral wall of the outer conductor 44. The choke 6 includes a choke portion 61 and an isolation portion 62 connected to the choke portion 61. The choke 61 is used for guiding current, and the isolation 62 is used for isolating current conduction of the outer conductor 44 of the coaxial line 4 located above and below the isolation 62, so as to prevent pattern distortion and pattern upwarp. The choke 61 extends in the vertical direction, surrounds the outer conductor 44 on the peripheral side, has a gap with the outer conductor 44 on the peripheral side, and the separator 62 extends in the horizontal direction, is located at the bottom of the choke 61 and is combined with the outer peripheral wall of the outer conductor 44, and the choke 61 and the separator 62 form a groove 63 having an opening with the Zhou Cewei of the outer conductor 44. The grooves 63 serve to redirect current from the peripheral side of the outer conductor 44 through the isolation portion 62 to the inner wall of the choke portion 61, suppressing conduction of current. The choke 6 has a simple structure and is arranged in this way, so that the choke effect is better. The length of the choke 6 in the extending direction of the coaxial line 4 is the same as the lengths of the first radiating element 51 and the second radiating element 52 in the extending direction thereof. Choke 6 and first and second radiating oscillators 51 andthe sub 52 has the same length so that the radiation performance is better. The length of the choke 6 in the extending direction of the coaxial line 4 is a quarter of the wavelength of the center frequency point. In the present embodiment, the choke 6 has a length of 1/4λ in the extending direction of the coaxial line 4 0 . By the arrangement, the path length formed by the inner wall of the choke piece 6 and the outer wall of the coaxial line 4 is one half of the wavelength of the central frequency point, so that the current on the outer surface of the coaxial line 4 is effectively restrained, and the directional diagram distortion is prevented. The choke 6 is welded to the outer peripheral wall of the outer conductor 44. The choke piece 6 is provided with a welding hole position for welding with the outer conductor 44, and the welding hole position is convenient to weld, simple in welding mode and easy to operate. Other connection methods, such as dispensing, may also be used, but are not limited thereto. The choke 6 is a metal sleeve. The metal has good conductivity and mechanical strength, can effectively conduct electromagnetic waves and maintain the structural stability of the choke piece 6, and avoids deterioration caused by material parameters and machining errors.
Fig. 2 is a policy standing wave ratio diagram of one embodiment of the omni-directional antenna 1 shown in fig. 1. As shown in FIG. 2, the omnidirectional antenna has a 1-frequency bandwidth and a standing wave bandwidth VSWR of less than or equal to 2.0 of 50%. The omnidirectional antenna has good omnidirectionality, can meet the horizontal omnidirectional radiation characteristics of different mounting platforms, and effectively inhibits the phenomena of upward tilting of the directional diagram and asymmetry of the directional diagram of the omnidirectional antenna 1.
Fig. 3 is a simulated gain pattern for one embodiment of the omni-directional antenna 1 shown in fig. 1. As shown in fig. 3, the maximum radiation direction is in the horizontal direction, the out-of-roundness of the pattern is 0.2dB, and the pattern is not affected by the coaxial line 4 and the mounting platform, which means that the antenna has an anti-mounting platform effect.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An omni-directional antenna, comprising:
the base is used for being assembled with the mounting platform;
the antenna housing is assembled with the base and forms a cavity with the base;
the coaxial line is positioned in the cavity and extends along the vertical direction, and one end of the coaxial line is assembled with the base;
the half-wave vibrator assembly is positioned in the cavity and is assembled at the other end of the coaxial line; a kind of electronic device with high-pressure air-conditioning system
And the choke piece is positioned in the cavity and between the half-wave vibrator assembly and the base in the extending direction of the coaxial line, and is assembled outside the coaxial line and has a gap with the outer side wall of the coaxial line.
2. The omni-directional antenna according to claim 1, wherein the half-wave element assembly comprises a first radiating element and a second radiating element which are oppositely arranged in the extending direction of the coaxial line, and the first radiating element and the second radiating element are both in a cylindrical structure; the coaxial line comprises a radio frequency connector and a conductor connected with the radio frequency connector and extending along the vertical direction, the conductor comprises an inner conductor, a dielectric layer and an outer conductor which are distributed from inside to outside, the top part of the inner conductor protrudes out of the dielectric layer and is arranged on the outer conductor, the protruding part of the inner conductor is located in the first radiating oscillator and assembled with the bottom of the first radiating oscillator, and the second radiating oscillator is located below the first radiating oscillator and assembled on the periphery of the outer conductor.
3. The omni-directional antenna according to claim 2, wherein a first opening is provided at a top of the first radiating element, and the protruding portion of the inner conductor does not protrude out of the first opening; and/or
The top of the second radiating oscillator is provided with a second opening, and the outer conductor extends out of the second opening to be connected with the radio frequency connector.
4. The omni-directional antenna according to claim 2, wherein the half-wave element assembly further comprises an element securing ring, one end of the element securing ring being assembled with the first radiating element, the other end of the element securing ring being assembled with the second radiating element.
5. The omnidirectional antenna of claim 4, wherein a first mounting hole is provided at a top of the dipole stationary ring, and a first internal thread is provided in the first mounting hole; the outer side wall of the first radiation oscillator is provided with a first external thread matched with the first internal thread, and the first radiation oscillator is connected with the first internal thread in a matched manner through the first external thread and assembled in the first mounting hole; and/or
The bottom of the oscillator fixing ring is provided with a second mounting hole, and a second internal thread is arranged in the second mounting hole; the outer side wall of the second radiation oscillator is provided with a second external thread matched with the second internal thread, and the second radiation oscillator is connected with the second internal thread in a matched manner through the second external thread and is assembled in the second mounting hole; and/or
The oscillator fixing ring is made of a dielectric material.
6. The omni-directional antenna according to claim 2, wherein the choke member comprises a choke portion extending in a vertical direction, surrounding a peripheral side of the outer conductor with a gap from the peripheral side of the outer conductor, and an isolation portion extending in a horizontal direction, located at a bottom of the choke portion and forming a groove having an opening with a peripheral wall of the outer conductor, the choke portion, the isolation portion, and Zhou Cewei of the outer conductor.
7. The omni-directional antenna according to claim 6, wherein the lengths of the first radiating element and the second radiating element in the extending direction of the coaxial line are the same; and/or
The length of the choke in the extending direction of the coaxial line is the same as the lengths of the first radiating element and the second radiating element in the extending direction thereof.
8. The omni-directional antenna according to claim 6, wherein a length of the first radiating element in an extending direction of the coaxial line is a quarter of a center frequency point wavelength; and/or
The length of the second radiation oscillator in the extending direction of the coaxial line is one quarter of the wavelength of the central frequency point; and/or
The length of the choke piece in the extending direction of the coaxial line is one quarter of the wavelength of the central frequency point.
9. The omni-directional antenna according to claim 2, wherein the choke is welded to an outer peripheral wall of the outer conductor; and/or
The first radiation oscillator is welded on the outer peripheral wall of the protruding part of the inner conductor; and/or
The second radiation oscillator is welded on the peripheral wall of the outer conductor; and/or
The choke piece is a metal sleeve; and/or
The antenna housing is made of high-wave-transmission materials.
10. The omnidirectional antenna of claim 1, wherein an inner wall of the bottom end of the radome is provided with an internal thread, one end of the outer side wall of the base, which is close to the radome, is provided with an external thread matched with the internal thread, and the radome is in matched connection with the external thread through the internal thread and is assembled and fixed with the base.
CN202311553416.1A 2023-11-20 2023-11-20 Omnidirectional antenna Pending CN117374592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311553416.1A CN117374592A (en) 2023-11-20 2023-11-20 Omnidirectional antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311553416.1A CN117374592A (en) 2023-11-20 2023-11-20 Omnidirectional antenna

Publications (1)

Publication Number Publication Date
CN117374592A true CN117374592A (en) 2024-01-09

Family

ID=89406001

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311553416.1A Pending CN117374592A (en) 2023-11-20 2023-11-20 Omnidirectional antenna

Country Status (1)

Country Link
CN (1) CN117374592A (en)

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