CN117080729A - Omnidirectional antenna capable of randomly adjusting feed position - Google Patents

Omnidirectional antenna capable of randomly adjusting feed position Download PDF

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Publication number
CN117080729A
CN117080729A CN202311084575.1A CN202311084575A CN117080729A CN 117080729 A CN117080729 A CN 117080729A CN 202311084575 A CN202311084575 A CN 202311084575A CN 117080729 A CN117080729 A CN 117080729A
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CN
China
Prior art keywords
branch
printed board
connector
grounding
vibrator
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
CN202311084575.1A
Other languages
Chinese (zh)
Inventor
王亮
刘苇航
李涛
刘昕
董长胜
赵东贺
卢飞宇
苌伟林
张廷恒
秦光远
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.)
CETC 54 Research Institute
Original Assignee
CETC 54 Research Institute
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 CETC 54 Research Institute filed Critical CETC 54 Research Institute
Priority to CN202311084575.1A priority Critical patent/CN117080729A/en
Publication of CN117080729A publication Critical patent/CN117080729A/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
    • H01Q1/36—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
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
    • H01Q5/55—Feeding or matching arrangements for broad-band or multi-band operation for horn or waveguide antennas

Landscapes

  • Waveguide Aerials (AREA)

Abstract

The invention discloses an omnidirectional antenna capable of randomly adjusting a feed position, which belongs to the technical field of radio communication and comprises a printed board and a grounding board; the device also comprises a metal microstrip line and a matching load; the printed board is erected on the upper surface of the grounding plate; the front and back surfaces of the printed board are covered with metal microstrip lines, and the projections of the two metal microstrip lines on the printed board are overlapped; the metal microstrip line comprises a vibrator part and a grounding part, wherein the vibrator part is C-shaped, and the grounding part is strip-shaped; the inner core of the connector is welded on a branch joint parallel to the grounding part in the vibrator part, and a flange of the connector is in threaded connection with the grounding plate; the matching load is sleeved outside the connector dielectric layer, the top end of the matching load is connected with a branch parallel to the grounding part in the vibrator part, and the matching load and the connector inner core are in no contact. The invention has simple structure, small size, light weight, simple feed structure form and can adjust the position of the external interface of the antenna at any time according to actual requirements.

Description

Omnidirectional antenna capable of randomly adjusting feed position
Technical Field
The invention relates to an omnidirectional antenna capable of randomly adjusting a feeding position in the technical field of radio communication, which can adjust the position of a feeding point and the position of an external structure interface according to the requirement of a user and is convenient to install and use.
Background
With the rapid development of science and technology, people's life is increasingly modernized, limited frequency resources are increasingly strained, and people put higher demands on the capacity and transmission rate of wireless communication. Not only high-quality transmission of information such as language, text, image, data, etc., but also widening, miniaturization, and co-typing of devices are required. Antennas are important components in wireless systems as a means of radiating and receiving electromagnetic waves. The quality of the antenna performance directly determines the quality of the communication quality of the wireless communication system. Without an antenna, it is not possible to set up any radio system. Therefore, antenna research more suitable for application environment requirements is increasingly active in accordance with the development trend of radio equipment, and becomes an important research branch in the discipline field.
In the important communication field, in order to realize smooth communication and eliminate interference, multi-band, multi-functional radio stations and broadband frequency modulation radio stations are widely applied. The frequency modulation rate is higher and the frequency modulation range is wider, and the original antenna can not meet the requirements of the current application environment. In addition, a plurality of antennas are densely distributed in the same space, so that mutual interference is serious, and the communication quality is affected. Other alternative spatial placement antennas are also not suitable for the original form of antenna. In order to solve the contradiction, an effective solution is to develop an antenna which has simple structure, small size, light weight, simple feed structure form and convenient placement at a narrow position in equipment, and the position of an external interface of the antenna can be adjusted at any time according to actual requirements.
In conventional communication systems, wireless communication is particularly important as a main technical means of today's information-oriented society. The channel capacity is continuously expanded, the transmission rate is continuously improved, and the service mode is gradually flexible. In response to this, communication devices have high integration and compact layout space, and antennas are more required as transmitting and receiving parts in communication systems, and antennas that are simple in form and can be placed in narrow places are more required.
Monopole antennas are vertical antennas with a quarter wavelength. This type of antenna is typically mounted on a ground plane, which may be the actual ground or an artificial ground plane such as the body of a vehicle on which the antenna is mounted. The monopole antenna is fed by using a coaxial cable in the lower power outage, and the ground conductor of the feeder is connected with the platform. In free space, the radiation pattern of a quarter-wavelength monopole antenna in the vertical plane is similar to the pattern of a half-wave dipole antenna in the vertical plane, but without subsurface radiation. In the horizontal plane, the vertical monopole antenna is omnidirectional.
In order to ensure the requirements of application environment, it is necessary to research an antenna which has simple structure, small size, light weight, simple feed structure form and can adjust the position of the external interface of the antenna at any time according to practical requirements so as to facilitate placement in a narrow position in the equipment.
Disclosure of Invention
The invention aims to solve the problem of meeting the requirements of special working occasions of users by adopting the means of adjusting the feeding position of a feeding point of a radio frequency connector, adjusting the connecting position of an external structure of the antenna, adjusting the bending shape of the antenna and the like for the same omni-directional monopole antenna.
In the case of an unchanged antenna performance, the overall size of the antenna may be compressed as desired. And the glass fiber reinforced plastic printed board is used, so that the cost of the antenna can be reduced.
The technical scheme adopted by the invention is as follows:
an omnidirectional antenna capable of randomly adjusting feed position comprises a printed board and a grounding plate; the device also comprises a metal microstrip line and a matching load; the printed board is erected on the upper surface of the grounding plate and is perpendicular to the grounding plate;
the front surface of the printed board is covered with a metal microstrip line; the metal microstrip line comprises a vibrator part, and the vibrator part is C-shaped;
the inner core of the connector is connected to any position of the fourth branch of the vibrator part, and the flange of the connector is in threaded connection with the grounding plate;
the matching loading sleeve is sleeved outside the connector medium layer and is in non-contact with the connector; the matched loading is of a semi-annular structure, the inner end of the matched loading is restrained on the printed board, and the matched loading can move up and down along the connector medium layer; the top end of the connector dielectric layer is propped against the lower edge of the fourth branch of the vibrator part, and the bottom end of the connector dielectric layer is close to the upper surface of the metal grounding plate; and the mating loading and connector cores are contactless.
Further, the vibrator part comprises a first branch, a second branch, a third branch and a fourth branch which are sequentially connected; the first branch and the third branch are perpendicular to the second branch, and the first branch and the third branch are positioned at the lower side of the second branch; the fourth branch is perpendicular to the third branch, and extends from the tail end of the third branch towards the direction of the first branch; the length of the fourth branch is greater than that of the second branch, and the length of the third branch is greater than that of the first branch.
An omnidirectional antenna capable of randomly adjusting feed position comprises a printed board; the device also comprises a metal microstrip line and a matching load; the metal microstrip line is positioned on the front surface of the printed board;
the metal microstrip line comprises a vibrator part and a grounding part, wherein the vibrator part is C-shaped, and the grounding part is strip-shaped; the vibrator part is positioned above the grounding part and is in non-contact with the grounding part;
the rear surface of the printed board is provided with a second strip, and the projection of the second strip and the grounding part on the printed board is overlapped; the second strip is connected with the grounding part through a metal via hole penetrating through the printed board;
the inner core of the radio frequency cable assembly is connected to any position of the fourth branch of the vibrator part, and the shielding net of the radio frequency cable assembly is connected to the grounding part or the second strip; the matching loading sleeve is sleeved on the outer side of the outer dielectric layer of the radio frequency cable assembly and is in non-contact with the radio frequency cable assembly; the matching loading is of a semi-annular structure, the inner end of the matching loading is restrained on the printed board, and the matching loading can move up and down along the outer dielectric layer of the radio frequency cable assembly;
further, the vibrator part comprises a first branch, a second branch, a third branch and a fourth branch which are sequentially connected; the first branch and the third branch are perpendicular to the second branch, and the first branch and the third branch are positioned at the lower side of the second branch; the fourth branch is perpendicular to the third branch, and extends from the tail end of the third branch towards the direction of the first branch; the length of the fourth branch is greater than that of the second branch, and the length of the third branch is greater than that of the first branch.
Further, the inner core of the radio frequency cable assembly can be connected to any position of the fourth branch of the vibrator part, and the shielding net layer of the radio frequency cable assembly is adjusted according to the welding position of the inner core of the radio frequency cable assembly.
Further, the top end of the outer dielectric layer of the radio frequency cable assembly abuts against the lower edge of the fourth branch of the vibrator part, and the bottom end of the outer dielectric layer abuts against the upper edge of the second strip or the grounding part.
Compared with the background technology, the invention has the following advantages:
1. the antenna has compact structure and small size;
2. the antenna radio frequency interface is flexible and can be adjusted at any time according to the requirements of users;
3. the antenna is in a printed board form, so that the cost is low, and the mass production is convenient;
4. the antenna shape can be adjusted according to the requirements of users, so that the shaping is convenient;
drawings
Figure 1 is a schematic diagram of one embodiment of an omni-directional antenna;
fig. 2 is a schematic diagram of another embodiment of an omni-directional antenna;
FIG. 3 is another schematic structural view of FIG. 2;
FIG. 4 is a schematic view of the back structure of FIG. 3;
in the figure: 1. vibrator part, 2, printed board, 3, connector inner core, 4, ground plate (metal plate), 5, matching loading, 6, connector, 7, radio frequency cable inner core, 8, ground part, 9, radio frequency cable, 10, cable shielding net, 1-1, first branch, 1-2, second branch, 1-3, third branch, 1-4, fourth branch.
Detailed Description
An omnidirectional antenna capable of randomly adjusting feed position comprises a printed board, a matching load, a connector and a metal board.
The antenna can be used normally by adjusting the size of the printed board, namely adjusting the wiring of the vibrator according to the actual installation space.
The printed board is made of glass fiber reinforced plastic, the thickness of the printed board is as thin as 0.2mm, and the antenna is convenient to bend when the printed board is applied to the inner wall of the nonmetal medium surface of the equipment. The antenna can adjust the total length of the vibrator according to radiation surface factors such as a cover, a device dielectric surface and the like. The edge of the vibrator part (the length of the tail end of the fourth branch) parallel to the grounding part on the printed board is adjusted, the standing wave bandwidth can be expanded, the other edge (the length of the tail end of the first branch) of the vibrator on the printed board is adjusted, and the frequency range of the antenna can be changed.
In one embodiment, the vibrator part on the printed board is welded with the inner core of the connector, the flange of the connector is connected with the metal plate in a screwed mode, the grounding part of the printed board is contacted with the metal plate and commonly grounded, and if necessary, a medium can be added to support the printed board. The connector inner core can be welded at any position in the parallel section of the partial vibrator and the grounding part according to the use requirement of a user. The matching load is not contacted with the printed board, and the ring is sleeved outside the dielectric layer of the connector and is not contacted with the inner core of the connector. The antenna is used for adjusting the impedance matching of the antenna so as to meet the electrical performance index requirements proposed by users.
The metal plate is used for supporting the printed board and is convenient to butt joint with the user equipment structure, and if necessary, the cover can be added outside the antenna and assembled with the metal plate, so that the effects of attractive appearance, common shape and the like are achieved. The relative position of the printed board on the metal plate can be adjusted at will, so that the requirements of a user on the external interface position of the antenna can be met, and the connection device of the user can be conveniently used.
In another embodiment, the metal microstrip line in the printed board is divided into a vibrator and a grounding part, and the grounding part is distributed and overlapped on two sides of the printed board. The parallel positions of the partial vibrators fixed in the printed board and the grounding part on the printed board are matched and loaded; the metal plate can be removed, the connector is changed into a radio frequency cable assembly, the inner core of the radio frequency cable assembly is directly welded to the vibrator, and the shielding net layer of the radio frequency cable assembly is welded to the grounding part on the printed board. Welding the inner core of the radio frequency cable assembly at any position in the parallel section of the partial vibrator and the grounding part according to the use requirement of a user, and adjusting the position of the shielding net layer of the radio frequency cable assembly according to the welding position of the inner core.
The radio frequency cable assembly can be welded on the vibrator back side printed board. Selecting welding positions at any positions in parallel sections of the partial vibrators and the grounding part for punching, enabling the cable inner cores to pass through the holes, and welding the cable inner cores on the partial vibrators; the shielding mesh layer of the radio frequency cable assembly is soldered to the ground portion of the back side of the printed board.
The antenna can be directly attached to the inner wall of the nonmetal medium surface of the equipment, and the antenna can be prevented from being exposed to influence the appearance and application of the equipment by radiating signals through the medium surface of the equipment. In order to avoid shielding, facilitate wiring and other reasons, the length of the radio frequency cable and the position of the radio frequency cable welding printed board can be adjusted to meet the requirements of users.
Referring to fig. 1 to 4, the present embodiment includes a printed board, a mating load, a connector, a metal plate.
The specific antenna application modes are as follows:
first application mode: the vibrator parts distributed in parallel on the printed board are welded with the inner core of the connector, the flange of the connector is connected with the metal board in a screwed mode, the grounding part on the printed board is contacted with the metal board and is grounded together, and if necessary, a medium can be added to support the printed board. The antenna housing can be added outside according to the requirements to meet the requirements of water resistance, common mode, air movement and the like.
The antenna can be used for welding the connector inner core at any position in the parallel section of the partial vibrator and the grounding part according to the use requirement of a user. The relative position of the printed board on the metal plate can be adjusted at will, so that the requirements of a user on the external interface position of the antenna can be met, and the connection device of the user can be conveniently used.
The second application mode: the metal plate can be removed, the connector is changed into a radio frequency cable assembly, the inner core of the radio frequency cable assembly is directly welded to any position in the parallel section of part of the vibrator and the grounding part, and the shielding net layer of the radio frequency cable assembly is welded to the grounding part on the printed board. According to the user's use requirement, the welding of adjustable radio frequency cable is in the optional position of partial oscillator and ground connection partial parallel section, according to inner core welding position readjust radio frequency cable subassembly shielding net layer position.
The third application mode:
the radio frequency cable assembly can be welded on the vibrator back side printed board. Selecting welding positions at any positions in parallel sections of the partial vibrators and the grounding part for punching, enabling the cable inner cores to pass through the holes, and welding the cable inner cores on the partial vibrators; the shielding mesh layer of the radio frequency cable assembly is soldered to the ground portion of the back side of the printed board.
In the second and third application modes, the antenna can be directly attached to the inner wall of the nonmetal medium surface of the equipment, and signals are radiated through the medium surface of the equipment, so that the antenna can be prevented from being exposed, and the appearance and the application of the equipment are prevented from being influenced. In order to avoid shielding, facilitate wiring and other reasons, the length of the radio frequency cable and the position of the radio frequency cable welding printed board can be adjusted to meet the requirements of users.
Note that: the omni-directional antenna with randomly adjustable feeding position shown in the drawings is only three embodiments of the present invention, and those skilled in the art can understand and use the omni-directional antenna, the present invention is not limited to the above embodiments, and those skilled in the art can readjust the variation factors such as the material of the printed board, the size of the vibrator, etc. according to the actual working frequency and the use condition, without departing from the content of the present invention.
The present invention will be clearly and completely described by the technical solutions in the above embodiments, and it is obvious that the described embodiments are embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Claims (8)

1. An omnidirectional antenna capable of randomly adjusting feed position comprises a printed board and a grounding plate; the device is characterized by further comprising a metal microstrip line and a matching load; the printed board is erected on the upper surface of the grounding plate and is perpendicular to the grounding plate;
the front surface of the printed board is covered with a metal microstrip line; the metal microstrip line comprises a vibrator part, and the vibrator part is C-shaped;
the inner core of the connector is connected to any position of the fourth branch of the vibrator part, and the flange of the connector is in threaded connection with the grounding plate;
the matching loading sleeve is sleeved outside the connector medium layer and is in non-contact with the connector; the matched loading is of a semi-annular structure, the inner end of the matched loading is restrained on the printed board, and the matched loading can move up and down along the connector medium layer; the top end of the connector dielectric layer is propped against the lower edge of the fourth branch of the vibrator part, and the bottom end of the connector dielectric layer is close to the upper surface of the metal grounding plate; and the mating loading and connector cores are contactless.
2. The omni-directional antenna according to claim 1, wherein the element portion comprises a first branch, a second branch, a third branch, and a fourth branch connected in sequence; the first branch and the third branch are perpendicular to the second branch, and the first branch and the third branch are positioned at the lower side of the second branch; the fourth branch is perpendicular to the third branch, and the fourth branch extends from the tail end of the third branch towards the direction of the first branch.
3. The omni-directional antenna according to claim 2, wherein the fourth branch has a length greater than a length of the second branch, and the third branch has a length greater than a length of the first branch.
4. An omnidirectional antenna capable of randomly adjusting feed position comprises a printed board; the device is characterized by further comprising a metal microstrip line and a matching load; the metal microstrip line is positioned on the front surface of the printed board;
the metal microstrip line comprises a vibrator part and a grounding part, wherein the vibrator part is C-shaped, and the grounding part is strip-shaped; the vibrator part is positioned above the grounding part and is in non-contact with the grounding part;
the rear surface of the printed board is provided with a second strip, and the projection of the second strip and the grounding part on the printed board is overlapped; the second strip is connected with the grounding part through a metal via hole penetrating through the printed board;
the inner core of the radio frequency cable assembly is connected to any position of the fourth branch of the vibrator part, and the shielding net of the radio frequency cable assembly is connected to the grounding part or the second strip; the matching loading sleeve is sleeved on the outer side of the outer dielectric layer of the radio frequency cable assembly and is in non-contact with the radio frequency cable assembly; the matching loading is of a semi-annular structure, the inner end of the matching loading is restrained on the printed board, and the matching loading can move up and down along the outer dielectric layer of the radio frequency cable assembly.
5. The omni-directional antenna according to claim 4, wherein the element portion comprises a first branch, a second branch, a third branch, and a fourth branch connected in sequence; the first branch and the third branch are perpendicular to the second branch, and the first branch and the third branch are positioned at the lower side of the second branch; the fourth branch is perpendicular to the third branch, and the fourth branch extends from the tail end of the third branch towards the direction of the first branch.
6. The omni-directional antenna according to claim 5, wherein the fourth branch has a length greater than a length of the second branch, and the third branch has a length greater than a length of the first branch.
7. The omni-directional antenna according to claim 6, wherein the inner core of the rf cable assembly is connected to any position of the fourth branch of the vibrator part, and the shielding mesh layer of the rf cable assembly is adjusted according to the welding position of the inner core of the rf cable assembly.
8. The omni-directional antenna according to claim 7, wherein the top end of the outer dielectric layer of the radio frequency cable assembly abuts against the lower edge of the fourth branch of the vibrator portion, and the bottom end of the outer dielectric layer abuts against the upper edge of the second strip or the ground portion.
CN202311084575.1A 2023-08-28 2023-08-28 Omnidirectional antenna capable of randomly adjusting feed position Pending CN117080729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311084575.1A CN117080729A (en) 2023-08-28 2023-08-28 Omnidirectional antenna capable of randomly adjusting feed position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311084575.1A CN117080729A (en) 2023-08-28 2023-08-28 Omnidirectional antenna capable of randomly adjusting feed position

Publications (1)

Publication Number Publication Date
CN117080729A true CN117080729A (en) 2023-11-17

Family

ID=88701995

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311084575.1A Pending CN117080729A (en) 2023-08-28 2023-08-28 Omnidirectional antenna capable of randomly adjusting feed position

Country Status (1)

Country Link
CN (1) CN117080729A (en)

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