CN107689478A - A kind of rotating controllable AIS base stations Yagi-Uda antenna battle array - Google Patents

A kind of rotating controllable AIS base stations Yagi-Uda antenna battle array Download PDF

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Publication number
CN107689478A
CN107689478A CN201710731176.8A CN201710731176A CN107689478A CN 107689478 A CN107689478 A CN 107689478A CN 201710731176 A CN201710731176 A CN 201710731176A CN 107689478 A CN107689478 A CN 107689478A
Authority
CN
China
Prior art keywords
yagi
antenna
girder
base stations
battle array
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
CN201710731176.8A
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Chinese (zh)
Inventor
孙振
徐铁
赵建森
王胜正
陆瑛
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Shanghai Maritime University
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Shanghai Maritime University
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 Shanghai Maritime University filed Critical Shanghai Maritime University
Priority to CN201710731176.8A priority Critical patent/CN107689478A/en
Publication of CN107689478A publication Critical patent/CN107689478A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/1235Collapsible supports; Means for erecting a rigid antenna
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/28Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
    • H01Q19/30Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/28Combinations of substantially independent non-interacting antenna units or systems

Abstract

The invention discloses a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array, comprising:The fixing axle being vertically arranged;Being horizontally set on both ends in fixing axle has the girder of waist-shaped hole;Active connection;A pair of yagi aerials, it is symmetrically nested with girder both sides, and is connected by active connection with girder;Each yagi aerial includes:One antenna crossbeam, it offers rectangular through-hole with girder junction so that girder realizes that distance and rotation are adjusted through rectangular through-hole.The present invention disclosure satisfy that routing scheme waters AIS base station communication demands, so as to improve the security in routing scheme waters.

Description

A kind of rotating controllable AIS base stations Yagi-Uda antenna battle array
Technical field
The present invention relates to watercraft AIS antenna for base station field, more particularly to a kind of rotating controllable AIS base stations binary Yagi spark gap day Linear array.
Background technology
AIS is the abbreviation of automatic recognition system, and the system is made up of bank base equipment and ship-borne equipment.AIS basic operation It is that " ship-to-ship " and " ship to shore " information exchanges.In order to monitor the real-time navigation situation in important navigable waters in real time, ensure marine Traffic safety, a large amount of AIS base stations are mounted with world heavy traffic waters and major port area.AIS base stations receive its area under one's jurisdiction The relevant informations such as operational configuration that Shipborne terminal is sent, ship information, at the same maritime administration department is issued meteorology, the hydrology etc. Navigation safety information is broadcasted to local ship, so as to realize the management supervision and service to local ship.
Frequency is AIS 1 (161.975MHz) and AIS 2 (162.025MHz) used by AIS communicates, and belongs to very high frequency(VHF) (VHF) frequency range, the whiplike metal antenna of generally use, directionality is omni-directional, although can realize that large range of VHF leads to Letter, but still suffer from many problems:
1) in watercraft AIS system, because part waters offshore stop spacing is from more than 20 nautical miles, or even some waters offshore stop spacings From more than 50 nautical miles.Omni-directional ship station antenna gain is relatively low, is provided according to International Telecommunication Union (ITU), and transmission power is limited, because This is difficult to remote VHF communication, causes AIS bank stations to cover these waters;
2) in onboard AIS communication system, omni-directional transmitting antenna transmission power is in more than 20W, to shore facilities around And user produces very strong electromagnetic interference;
3) because traffic current density in waters increases, communication channel is often occupied, time slot collision be present, considerably increases VTS The burden of person on duty.
Conventional VHF directional aerials use yagi aerial more, and the antenna has the advantages that radiation efficiency height, high gain, can be real Existing AIS base stations VHF telecommunications.But once common yagi aerial is pointed to fixed, and directionality is just fixed therewith, it is difficult to by fast Speed changes directional diagram to realize the beam communication to different waters., it is necessary to lobe when ship in zonule sends information Figure is sharp, and during to ship sending bulk message in a wide range of marine site, required lobe pattern is wider.Even if so common yagi aerial rotation Relay antenna direction, it is also difficult to quick control lobe pattern size, it is difficult to control AIS base station communication coverages.
The content of the invention
It is an object of the invention to provide a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array, meet routing scheme waters AIS base station communication demands, so as to improve the security in routing scheme waters.
In order to realize the above object the present invention is achieved by the following technical solutions:
A kind of rotating controllable AIS base stations Yagi-Uda antenna battle array, is characterized in, comprising:
The fixing axle being vertically arranged;
Being horizontally set on both ends in fixing axle has the girder of waist-shaped hole;
Active connection;
A pair of yagi aerials, it is symmetrically nested with girder both sides, and is connected by active connection with girder;
Each described yagi aerial includes:
One antenna crossbeam, it offers rectangular through-hole with the girder junction so that described girder leads to through rectangle Realize that distance and rotation are adjusted in hole.
Each described yagi aerial is correspondingly arranged in the waist-shaped hole opening position of girder.
Described active connection includes:
Shelf bracket, it is arranged at the lower section of described antenna crossbeam rectangular through-hole;
Cylindrical thread pin, one section are arranged on described shelf bracket, and the other end is arranged in the waist-shaped hole of girder.
Described antenna crossbeam is rotated using cylindrical thread pin as axle to be adjusted so that antenna crossbeam changes with girder angle angle Become.
Described cylindrical thread pin moves along waist-shaped hole so that the relative distance between a pair of yagi aerials changes.
Described yagi aerial also includes:
Reflector, active dipole and some directors being arranged on antenna crossbeam.
Described active dipole is half-wave folding oscillator.
The present invention compared with prior art, has advantages below:
Antenna array has two array elements, and each element represents a yagi aerial.The settable rotation of single yagi aerial, rotation Mode can be two antenna synchronous rotaries or asynchronous rotation, and when synchronous rotary, antenna remains parastate, When asynchronous rotation, antenna oscillator can be rotated in all directions, and the distance between two yagi aerials can be adjusted, and be increased with realizing The adjustability of benefit and pattern.
Active dipole is half-wave folding oscillator, can improve impedance.In order to keep the electric current of coaxial line and impedance matching to put down Weighing apparatus, employs two impedance transformers and two antenna baluns.It is connected between two yagi aerials by power divider to realize Power even distribution.The main shaft of antenna array is also rotatable simultaneously, to aim at area of interest and ship.
Brief description of the drawings
Fig. 1 is a kind of structural representation of rotating controllable AIS base stations Yagi-Uda antenna battle array of the present invention;
Fig. 2 is a kind of active connection explosive view of rotating controllable AIS base stations Yagi-Uda antenna battle array of the present invention;
Fig. 3 is a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array impedance operator figure of the present invention;
Fig. 4 is a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array H faces of the present invention and E faces directional diagram;
Fig. 5 is a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array normalized radiation pattern of the present invention;
Fig. 6 normalizes direction for a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array different antennae angle of the present invention Figure;
Fig. 7 is a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array difference spacing horizontal plane normalization side of the present invention Xiang Tu.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferable specific embodiment in detail, the present invention is further elaborated.
As shown in figure 1, a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array, comprising:The fixing axle 3 being vertically arranged; Being horizontally set on both ends in fixing axle 3 has the girder 4 of waist-shaped hole;Active connection;A pair of yagi aerials, it is symmetrically nested with The both sides of girder 4, and be connected by active connection with girder 4.
Each described yagi aerial includes:One antenna crossbeam, it offers rectangular through-hole 71 with the girder junction, So that described girder realizes that distance and rotation are adjusted through rectangular through-hole 71.
The described both sides of girder 4 are respectively equipped with waist-shaped hole 41 and waist-shaped hole 42;
Each described yagi aerial is correspondingly arranged in the waist-shaped hole opening position of girder.
Yagi aerial is also comprising reflector, active dipole and some directors being arranged on antenna crossbeam.
Fig. 1 shows the specific annexation of rotating controllable AIS base stations Yagi-Uda antenna battle array, and a pair of yagi aerials are Yagi aerial 1 and yagi aerial 2;Wherein yagi aerial 1 include antenna crossbeam 110, director (11~17), active dipole 18, Reflector 19;Yagi aerial 2 includes antenna crossbeam 210, director (21~27), active dipole 28, reflector 29.
Above-mentioned active connection includes:Shelf bracket 51, it is arranged under described antenna crossbeam rectangular through-hole 71 Side;Cylindrical thread pin 61, its one end are arranged on shelf bracket 51, and the other end is arranged in the waist-shaped hole 41 of girder;Antenna is horizontal Beam 110 is axle rotation regulation with cylindrical thread pin 51 so that antenna crossbeam and girder angle angulation change, cylindrical thread pin along Waist-shaped hole moves so that the relative distance between a pair of yagi aerials changes, and is threaded above the cylindrical thread pin, when eight Wooden antenna 1 and the angle of yagi aerial 2 by nut with that after the regulation, can fix its angle and distance;In girder 4 Between pass through bearing block below position rolling bearing 32 be installed, the top of fixing axle 3 and square shaft under the girder below two-element antenna array Hold 32 cooperations and realize that what antenna shook rotates freely.
Above-mentioned active dipole is half-wave folding oscillator.
As shown in figure 1, described antenna array, yagi aerial 1, the passive reflective oscillator 11~17 and 21~27 of yagi aerial 2 Length is l2=0.5 λ, the length of active dipole 18 and 28 are l1=0.482 λ, the passive length of director dipole 19 and 29 is l3= 0.464λ.Center of antenna frequency is 162MHz, and active dipole is 0.23 λ with the distance between reflection oscillator, and active dipole uses Half-wave folded dipole, to realize coaxial line internal and external conductor current balance type, apply balance-non-equilibrium conversion in antenna array system Device (balun).
Fig. 3 gives the emulation and experiment of rotating controllable AIS base stations Yagi-Uda antenna battle array, and experiment and emulation frequency range are equal For 155~165MHz.It can be seen that experimental result and simulation result are very close, and the frequency range between 160~162MHz, resistance Close to 50 Ω, reactance is close to 0, it is seen that aerial array can realize good impedance matching.Wherein on 162MHz frequencies, antenna Standing-wave ratio is less than 1.2.
Fig. 4 gives the H- faces of rotating controllable AIS base stations Yagi-Uda antenna battle array and E- faces directional diagram, experimental place are Spacious playground, experimental measurements are very close with simulation result.On the radiation results of all directions, experimental result is slightly less than imitative True result, in the directional diagram of antenna H faces, the main lobe gain of experiment is smaller compared to emulating, and side lobe gain is bigger.It is primarily due to There is certain coupling between two driven antenna oscillators.In addition, active dipole and other parasitic elements also produce coupling, cause Antenna sidelobe is bigger.
Fig. 5 gives rotating controllable AIS base stations Yagi-Uda antenna battle array and unitary yagi aerial normalized radiation pattern pair Than.Radiation pattern dB data are converted into power data, then power and two antenna greatest irradiation work(with all directions Rate is contrasted, and draws normalization data.Yagi-Uda antenna system is when two yagi elements are parallel as shown in Figure 4, antenna Gain highest, radiant power exceed 2 times of unitary yagi aerial.And main lobe half-power beam width is narrower, unitary yagi aerial HPBW be about 60 °, Yagi-Uda antenna array HPBW is less than 33 °.Radiant power more than 40 ° is less than unitary Yagi spark gap day Line, with the increase of angle, dyadic array side-lobes power is small compared with unitary yagi aerial one times.On co-channel interference is suppressed, have very big Advantage.
Fig. 6 gives rotating controllable AIS base stations Yagi-Uda antenna battle array under different antennae angle, the water of aerial array Plane normalized radiation pattern.Two bays, which can separate, to be rotated, and when changing different angles, antenna radiation pattern occurs very big Change.When angle is 0 ° between same day linear array antenna member, that is to say, that two antenna elements are parallel.Antenna gain is maximum, radiate away from From farthest.When angle increases to 45 °, the greatest irradiation value of antenna is 50-60% when bay is parallel.And side-lobes power Rise, as the angle between two antenna elements in aerial array increases, there is polytropism in antenna, as two antenna angles are in Fig. 5 At 70 °, aerial array greatest irradiation direction has three.When two bay angles are 90 degree, amphicheirality's speciality is presented in antenna, Dual area can be covered as needed.In conjunction with main axis, it can control the region of information can be caused to cover very more.When two antenna angles During into 135 °, similar 8 fonts are presented in antenna array pattern.Therefore, can be by changing the relative angle of each array element of aerial array Degree, antenna radiation pattern can be dynamically adjusted, and then control the covering to different waters.
Fig. 7 gives rotating controllable AIS base stations Yagi-Uda antenna battle array difference spacing horizontal plane normalized radiation pattern.Two When bay is parallel, as bay 0.5 λ of spacing, the main lobe beamwidth of antenna is very wide, and maximum gain direction is 90 °, 0.8 when maximum radiated power is about bay 1.0 λ of spacing.With the increase of spacing, antenna radiation pattern main lobe HPBW subtracts It is small, about 29 °, and gain increases, but directional diagram side-lobes power increases.When antenna element spacing is 0.75 λ, HPBW is about 34°.Therefore, ais signal overlay area and propagation distance can be adjusted by adjusting antenna spacing.
In summary, a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array of the present invention, meets routing scheme waters AIS Base station communication demand, so as to improve the security in routing scheme waters.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (7)

1. a kind of rotating controllable AIS base stations Yagi-Uda antenna battle array, it is characterised in that include:
The fixing axle being vertically arranged;
Being horizontally set on both ends in fixing axle has the girder of waist-shaped hole;
Active connection;
A pair of yagi aerials, it is symmetrically nested with girder both sides, and is connected by active connection with girder;
Each described yagi aerial includes:
One antenna crossbeam, it offers rectangular through-hole with the girder junction so that described girder is real through rectangular through-hole Now distance and rotation are adjusted.
2. rotating controllable AIS base stations Yagi-Uda antenna battle array as claimed in claim 1, it is characterised in that
Each described yagi aerial is correspondingly arranged in the waist-shaped hole opening position of girder.
3. rotating controllable AIS base stations Yagi-Uda antenna battle array as claimed in claim 2, it is characterised in that described activity Connector includes:
Shelf bracket, it is arranged at the lower section of described antenna crossbeam rectangular through-hole;
Cylindrical thread pin, one section are arranged on described shelf bracket, and the other end is arranged in the waist-shaped hole of girder.
4. rotating controllable AIS base stations Yagi-Uda antenna battle array as claimed in claim 3, it is characterised in that
Described antenna crossbeam is rotated using cylindrical thread pin as axle to be adjusted so that antenna crossbeam and girder angle angulation change.
5. the rotating controllable AIS base stations Yagi-Uda antenna battle array as described in claim 3 or 4, it is characterised in that described circle Male screw pin moves along waist-shaped hole so that the relative distance between a pair of yagi aerials changes.
6. rotating controllable AIS base stations Yagi-Uda antenna battle array as claimed in claim 1, it is characterised in that described Yagi spark gap Antenna also includes:
Reflector, active dipole and some directors being arranged on antenna crossbeam.
7. rotating controllable AIS base stations Yagi-Uda antenna battle array as claimed in claim 6, it is characterised in that described is active Oscillator is half-wave folding oscillator.
CN201710731176.8A 2017-08-23 2017-08-23 A kind of rotating controllable AIS base stations Yagi-Uda antenna battle array Pending CN107689478A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539419A (en) * 2018-05-31 2018-09-14 杭州前茂保健食品有限公司 Unitary adjustable section antenna in embedded wallboard
CN108598709A (en) * 2018-05-31 2018-09-28 杭州前茂保健食品有限公司 Wall-mounted adjustable antenna
CN108598708A (en) * 2018-05-31 2018-09-28 杭州前茂保健食品有限公司 Mobile module in adjustable exterior aerial
CN108711666A (en) * 2018-05-31 2018-10-26 杭州前茂保健食品有限公司 It is a kind of can multi-angle regulation exterior aerial
CN108767420A (en) * 2018-06-23 2018-11-06 杭州前茂保健食品有限公司 Wall-mounted exterior aerial with protective device
CN109786978A (en) * 2019-01-17 2019-05-21 南京理工大学 A kind of earth station realizing satellite and ground communication
CN110556633A (en) * 2019-07-26 2019-12-10 西安电子科技大学 Broadband vertical polarization omnidirectional array antenna with adjustable unit number
WO2020156322A1 (en) * 2019-01-30 2020-08-06 新华三技术有限公司 Antenna system and network device
WO2021119936A1 (en) * 2019-12-16 2021-06-24 瑞声声学科技(深圳)有限公司 Antenna and antenna array

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CN2502470Y (en) * 2001-09-09 2002-07-24 赵玉成 Small all channel steering aerial device
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CN204905414U (en) * 2015-09-10 2015-12-23 西安星通通信科技有限公司 Dismantlement formula yagi aerial
CN205646107U (en) * 2016-04-12 2016-10-12 深圳北斗航天导航科技有限公司 VHF antenna mounting structure based on AIS

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JPH04162803A (en) * 1990-10-26 1992-06-08 Nec Corp Antenna array system
WO1995030256A1 (en) * 1994-04-29 1995-11-09 Pacific Monolithics, Inc. Dual-array yagi antenna
CN2274380Y (en) * 1996-12-06 1998-02-11 马洪亮 Television receiving antenna
US20020196185A1 (en) * 2000-11-01 2002-12-26 Bloy Graham P. Active high density multi-element directional antenna system
CN2502470Y (en) * 2001-09-09 2002-07-24 赵玉成 Small all channel steering aerial device
CN204905414U (en) * 2015-09-10 2015-12-23 西安星通通信科技有限公司 Dismantlement formula yagi aerial
CN205646107U (en) * 2016-04-12 2016-10-12 深圳北斗航天导航科技有限公司 VHF antenna mounting structure based on AIS

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539419A (en) * 2018-05-31 2018-09-14 杭州前茂保健食品有限公司 Unitary adjustable section antenna in embedded wallboard
CN108598709A (en) * 2018-05-31 2018-09-28 杭州前茂保健食品有限公司 Wall-mounted adjustable antenna
CN108598708A (en) * 2018-05-31 2018-09-28 杭州前茂保健食品有限公司 Mobile module in adjustable exterior aerial
CN108711666A (en) * 2018-05-31 2018-10-26 杭州前茂保健食品有限公司 It is a kind of can multi-angle regulation exterior aerial
CN108539419B (en) * 2018-05-31 2020-07-10 常州机电职业技术学院 Integrated adjustable antenna embedded in wall board
CN108711666B (en) * 2018-05-31 2020-06-05 北京星英联微波科技有限责任公司 Outdoor antenna that can multi-angle was adjusted
CN108598709B (en) * 2018-05-31 2020-06-23 扬州华工电气有限公司 Wall-mounted adjustable antenna
CN108598708B (en) * 2018-05-31 2020-06-30 常州机电职业技术学院 Mobile module in adjustable outdoor antenna
CN108767420A (en) * 2018-06-23 2018-11-06 杭州前茂保健食品有限公司 Wall-mounted exterior aerial with protective device
CN109786978A (en) * 2019-01-17 2019-05-21 南京理工大学 A kind of earth station realizing satellite and ground communication
WO2020156322A1 (en) * 2019-01-30 2020-08-06 新华三技术有限公司 Antenna system and network device
CN110556633A (en) * 2019-07-26 2019-12-10 西安电子科技大学 Broadband vertical polarization omnidirectional array antenna with adjustable unit number
WO2021119936A1 (en) * 2019-12-16 2021-06-24 瑞声声学科技(深圳)有限公司 Antenna and antenna array

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Application publication date: 20180213